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Questions and Answers => Foundation of EV Q&A => Topic started by: Akshay on December 10, 2019, 07:37:26 AM

Title: Assignment: Identify the sub-components of a real EV
Post by: Akshay on December 10, 2019, 07:37:26 AM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.

Does your selected EV have on-board charging?
What is the rated AC input voltage of the on-board charger?
What is the DC output voltage of the on-board charger?
What is the Battery pack nominal voltage?
What type of motor is connected?
Is there an inverter needed in the drive unit?
Is there a high voltage DC-DC converter on-board the vehicle?
What type of cooling methodology is used? - Passive air, active air, active liquid?
Any other interesting observations you'd like to share?


Report and post your findings on the forum on the following subtopic.
Title: Re: Identify the sub-components of a real EV
Post by: rmussa21 on December 15, 2019, 02:10:42 AM
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Title: Re: Identify the sub-components of a real EV
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Title: Re: Identify the sub-components of a real EV
Post by: chandrasekar197529 on December 15, 2019, 07:44:43 AM
1) Does your selected EV have on-board charging?
   Yes the Hyundai KONA has on board charging
2) What is the rated AC input voltage of the on-board charger?
     Has 2 options : 120V / 240V
3) What is the DC output voltage of the on-board charger?
    50kW rapid charging facility
4) What is the Battery pack nominal voltage?
    51.8V DC (3.7*14)
5) What type of motor is connected?
     The Kona Electric powertrain employs a high-efficiency 150 kW (201 horsepower)permanent-magnet synchronous electric motor[/b] supplied by a high voltage   


Title: Re: Identify the sub-components of a real EV
Post by: chandrasekar197529 on December 15, 2019, 07:50:52 AM
6) Is there an inverter needed in the drive unit?
    Yes for converting AC to DC
7) Is there a high voltage DC-DC converter on-board the vehicle?
    Yes
Title: Re: Identify the sub-components of a real EV
Post by: chandrasekar197529 on December 15, 2019, 08:00:41 AM
8) What type of cooling methodology is used? - Passive air, active air, active liquid?
    Active Liquid cooling
9) Any other interesting observations you'd like to share?
    The Hyundai Kona Electric is fitted with a 7.2 kW on-board charger for Type 2 AC charging, in addition to rapid 50 kW DC capability.
    This means that even when  connected to a fast charger with a rated output above 7.2 kW, the Kona Electric will only be able to charge at 7.2 kW.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on December 17, 2019, 12:09:09 AM
Page 4

Hello rmussa21,

Everything looks good.

One thing you may want to look at is if both the motors on the Model X are Induction or only one of them. Everything else seems accurate.

Thanks,
Jaideep
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on December 17, 2019, 12:17:14 AM
1) Does your selected EV have on-board charging?
   Yes the Hyundai KONA has on board charging
2) What is the rated AC input voltage of the on-board charger?
     Has 2 options : 120V / 240V
3) What is the DC output voltage of the on-board charger?
    50kW rapid charging facility
4) What is the Battery pack nominal voltage?
    51.8V DC (3.7*14)
5) What type of motor is connected?
     The Kona Electric powertrain employs a high-efficiency 150 kW (201 horsepower)permanent-magnet synchronous electric motor[/b] supplied by a high voltage

Hi Chandrasekar,

You might want to check on the DC output voltage rating once more. 50kW is the power rating which is calculated as Power = Voltage * Current

Also the battery pack nominal voltage seems a little low. A car will have a much higher pack voltage than 51.8V.

Please check these two values once again.

Thanks,
Jaideep
Title: Re: Identify the sub-components of a real EV
Post by: rmussa21 on December 17, 2019, 04:33:17 AM
Thank you Jaideep for the feedback.   i will look into that.  appreciate it.
Title: Re: Identify the sub-components of a real EV
Post by: rmussa21 on December 17, 2019, 12:11:58 PM
Hi Jaideep,

Thank you for your earlier feedback. 

The newer Model X has an induction motor in the back and a PMSRM in the front.

Combining an induction motor with a PMSRM makes sense because the two motor types have different performance characteristic, ideal for variable-speed single-gear transmission drive units.   One is optimised for power and one for range and performance. So dual-motor vehicles can send power to the induction motor when immediate, rapid acceleration is called for, then shift power to the PMSRM as the vehicle gets up to speed.  Very clever!

This technology was introduced on the Model 3 high-end dual motor version, but on the Model 3 an induction motor is in the front and a PMSRM in the back.

Thank you again.   

Riaz
Title: Re: Identify the sub-components of a real EV
Post by: chandrasekar197529 on December 21, 2019, 10:08:11 AM
Hi Jaideep,

Please find my corrected data

DC Output voltage of the on board charger is 77kW..
Fast charge Power (max)    77 kW DC
Fast charge Time (40->320 km) -> 44 min
Title: Re: Identify the sub-components of a real EV
Post by: chandrasekar197529 on December 22, 2019, 08:38:24 AM

  Hi,
 The nominal voltage is 356V
  To reach 356V, nominal voltage for each cell at 3.7V with a configuration of 96 cell. (3.7x96=356V)
Title: Re: Identify the sub-components of a real EV
Post by: senthilkumar.devarajan on January 01, 2020, 03:41:51 AM
Assignment -2
Title: Re: Identify the sub-components of a real EV
Post by: deepak on January 10, 2020, 06:11:51 AM
1.Does your selected EV have on-board charging?
Ans:Yes
2.What is the rated AC input voltage of the on-board charger?
Ans: 120/240 Volts dual options
3.What is the DC output voltage of the on-board charger?
Ans:400 Volts(Source: https://www.guideautoweb.com/en/makes/hyundai/kona/2019/specifications/electric-preferred/)
4.What is the Battery pack nominal voltage?
Ans:356 Volts((Source: https://www.guideautoweb.com/en/makes/hyundai/kona/2019/specifications/electric-preferred/)
5.What type of motor is connected?
6.Is there an inverter needed in the drive unit?
Ans:Yes in order to drive the AC PM Sync motors
7.Is there a high voltage DC-DC converter on-board the vehicle?
Ans: Yes
8.What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans: Active liquid  and   passive air through front Air vents
9.Any other interesting observations you'd like to share?
Ans:
•   Batteries are Li Polymer type
•   Portable single phase charger
•   Special switch provided to remove the Charger (Locking)
•   AC charger is only single phase.
Other source :You tube videos
Title: Re: Identify the sub-components of a real EV
Post by: cecil.pabbathi on January 16, 2020, 01:29:20 AM
Hi,

The vehicle I have chosen is an MG ZS EV. ;)

1.Does your selected EV have on-board charging?
Ans: Yes. It it fitted with a 7kW on board charger.
2.What is the rated AC input voltage of the on-board charger?
Ans: The rated input voltage is 230 V AC.
3. What is the DC output voltage of the on-board charger?
Ans: Could not find info.
4. What is the Battery pack nominal voltage?
Ans: The vehicle uses a 44.5 kWh Battery pack. Could not find further info on the same.
5.What type of motor is connected?
Ans: 3 phase permanent magnet synchronous motor which delivers close to 140hp@3500 rpm.
6. Is there an inverter needed in the drive unit?
Ans: Yes. To convert the DC from the battery pack to AC current to the motor controller.
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans: Yes
8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:  Active Liquid cooling
9.Any other interesting observations you'd like to share?
Ans: The MG ZS EV range uses the CCS charging standard, which consists of a combined AC and DC inlet port. The MG ZS EV is fitted with a 7 kW on-board charger for Type 2 AC charging as standard, in addition to rapid 50 kW DC capability. This means that even when connected to a fast charger with a rated output above 7 kW, the MG ZS EV will only be able to charge at 7 kW.
Title: Re: Identify the sub-components of a real EV
Post by: cbcaditya on January 21, 2020, 06:35:34 AM
1. Does your selected EV have on-board charging?
Yes, Selected EV: Hyundai Kona; has an on-board charger

2. What is the rated AC input voltage of the on-board charger?
The Hyundai Kona has two options for AC based charging a 120 V (approx: 2.5 days for full charge) and a 240 V (approx: 10hrs to full charge)

3. What is the DC output voltage of the on-board charger?
The on board charger limits the power from DC source to a max of 77KW and a max voltage output greater than 328 Volts (the nominal voltage of the battery)I.e.ouptut of 400 V considering 99KW PMSM motor.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage: for 150 KW PMSM motor with a back of 98 battery cells 352.8V and for 99KW PMSM motor with a pack of 90 cells it is 328 V.

5. What type of motor is connected?
The Kona runs on Permanent Magnet Synchronous Motors (PMSM), two versions are offered (99KW and 150KW) motors.

6. Is there an inverter needed in the drive unit?
Yes an inverter is required to convert DC output from battery to AC for the PMSM motor.

7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle. But we have a low power DC-DC converter to supply charge to the low power battery pack.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
The cooling methodology used is active liquid cooling.

9. Any other interesting observations you'd like to share?
As per the latest communication from Hyundai, the on-board charger can accept 11KW three phase supply, this has been done to significantly reduce charging times for AC chargers.
Title: Re: Identify the sub-components of a real EV
Post by: spnath on February 14, 2020, 01:05:02 AM
Does your selected EV have on-board charging?
   Yes, it has onboard charger for household AC as well as AC charging station.

What is the rated AC input voltage of the on-board charger?
   Household AC: 120V (1.2kW per hour)
   AC charging station: 240V, (6kW per hour)

What is the DC output voltage of the on-board charger?
   It depends on the following factors:
   a. Battery pack voltage: DC output voltage must be higher than Battery pack voltage
   b. Optimum charging current (Iopt) for a available charging power (kW) & Battery pack voltage.
   c. Household-AC or AC-charging-station defines the charging power: 1.2kW Vs 6kW. This may affect the optimal charging current & voltage.
   
What is the Battery pack nominal voltage?
   nominal voltage: 352.4V for Extended (328V for Economical)

What type of motor is connected?
   Permanent Magnet Synchronous Motor (PMSM), Max Power 136ps, Max Torque 40.27kgm

Is there an inverter needed in the drive unit?
   YES, inverter is required.
   DC->AC from battery to traction motor
   AC->DC Charging using regenerative braking

Is there a high voltage DC-DC converter on-board the vehicle?
   No, there is no High Voltage DC-DC Converter.
   Though it has a low power DC-DC converter to charge 12V Auxiliary battery.

What type of cooling methodology is used? - Passive air, active air, active liquid?
   Active air cooling using battery cooling fans
   BMS controls the cooling fan to ensure the operating temperature of the battery pack.

Any other interesting observations you'd like to share?
   1. Regenerative braking: During deceleration or braking, vehicles kinetic energy is converted into electrical energy that charged the battery pack.
   2. KONA high voltage electrical system is designed to be isolated from the vehicle chassis.
   3. Gear reduction unit is used to increase the torque to the wheels.
   4. Three level are charging supported: 120V AC, 240V AC and DC charger.
   5. Lithium-ion polymer is used for high voltage battery pack
        6. 98 (90) cells are connected in series that gives 352.8 (324) Volts. Values in () are Economical model.
   7. BMS and PRA (Power Relay Assembly) is mounted in front side of the HV battery pack.
   
   
Title: Re: Identify the sub-components of a real EV
Post by: Bubsy on February 17, 2020, 06:55:05 AM
Good afternoon,

Please find below answer to related to Hyundaï Kona EV.

1. Does your selected EV have on-board charging ?
Yes, it has an on-board charger.

2. What is the rated AC input voltage of the on-board charger?
Rated AC inputs are 120 V or 240 V.

3. What is the DC output voltage of the on-board charger?
DC output voltage is 400 V.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage is 352.8V.

5. What type of motor is connected?
Permanent Magnet Synchronous Motors (PMSM).

6. Is there an inverter needed in the drive unit?
Yes, there is an inverter in the drive unit.

7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Active liquid cooling methodology is used.

9. Any other interesting observations you'd like to share?
Charger plug :  Locking System
BMS & BJB assembled next to the HV battery pack.

Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 19, 2020, 02:58:46 AM
1.Does your selected EV have on-board charging?
Ans:Yes
2.What is the rated AC input voltage of the on-board charger?
Ans: 120/240 Volts dual options
3.What is the DC output voltage of the on-board charger?
Ans:400 Volts(Source: https://www.guideautoweb.com/en/makes/hyundai/kona/2019/specifications/electric-preferred/)
4.What is the Battery pack nominal voltage?
Ans:356 Volts((Source: https://www.guideautoweb.com/en/makes/hyundai/kona/2019/specifications/electric-preferred/)
5.What type of motor is connected?
6.Is there an inverter needed in the drive unit?
Ans:Yes in order to drive the AC PM Sync motors
7.Is there a high voltage DC-DC converter on-board the vehicle?
Ans: Yes
8.What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans: Active liquid  and   passive air through front Air vents
9.Any other interesting observations you'd like to share?
Ans:
•   Batteries are Li Polymer type
•   Portable single phase charger
•   Special switch provided to remove the Charger (Locking)
•   AC charger is only single phase.
Other source :You tube videos


Verified. Your answers here are correct.
Good Job
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 19, 2020, 03:04:10 AM
Hi,

The vehicle I have chosen is an MG ZS EV. ;)

1.Does your selected EV have on-board charging?
Ans: Yes. It it fitted with a 7kW on board charger.
2.What is the rated AC input voltage of the on-board charger?
Ans: The rated input voltage is 230 V AC.
3. What is the DC output voltage of the on-board charger?
Ans: Could not find info.
4. What is the Battery pack nominal voltage?
Ans: The vehicle uses a 44.5 kWh Battery pack. Could not find further info on the same.
5.What type of motor is connected?
Ans: 3 phase permanent magnet synchronous motor which delivers close to 140hp@3500 rpm.
6. Is there an inverter needed in the drive unit?
Ans: Yes. To convert the DC from the battery pack to AC current to the motor controller.
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans: Yes
8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:  Active Liquid cooling
9.Any other interesting observations you'd like to share?
Ans: The MG ZS EV range uses the CCS charging standard, which consists of a combined AC and DC inlet port. The MG ZS EV is fitted with a 7 kW on-board charger for Type 2 AC charging as standard, in addition to rapid 50 kW DC capability. This means that even when connected to a fast charger with a rated output above 7 kW, the MG ZS EV will only be able to charge at 7 kW.

Many manufacturers do not give out details like the pack voltage and charger voltage

You can later go on to 3rd party websites in a few months and see if someone has done a teardown of it and that will answer most questions. The car is new so not much data is available on it.

Everything else looks fine.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 19, 2020, 03:06:27 AM
1. Does your selected EV have on-board charging?
Yes, Selected EV: Hyundai Kona; has an on-board charger

2. What is the rated AC input voltage of the on-board charger?
The Hyundai Kona has two options for AC based charging a 120 V (approx: 2.5 days for full charge) and a 240 V (approx: 10hrs to full charge)

3. What is the DC output voltage of the on-board charger?
The on board charger limits the power from DC source to a max of 77KW and a max voltage output greater than 328 Volts (the nominal voltage of the battery)I.e.ouptut of 400 V considering 99KW PMSM motor.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage: for 150 KW PMSM motor with a back of 98 battery cells 352.8V and for 99KW PMSM motor with a pack of 90 cells it is 328 V.

5. What type of motor is connected?
The Kona runs on Permanent Magnet Synchronous Motors (PMSM), two versions are offered (99KW and 150KW) motors.

6. Is there an inverter needed in the drive unit?
Yes an inverter is required to convert DC output from battery to AC for the PMSM motor.

7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle. But we have a low power DC-DC converter to supply charge to the low power battery pack.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
The cooling methodology used is active liquid cooling.

9. Any other interesting observations you'd like to share?
As per the latest communication from Hyundai, the on-board charger can accept 11KW three phase supply, this has been done to significantly reduce charging times for AC chargers.

All answers are accurate.

This also puts into perspective how much reduced power output we get from a 120V source compared to 240.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 19, 2020, 03:10:42 AM
Does your selected EV have on-board charging?
   Yes, it has onboard charger for household AC as well as AC charging station.

What is the rated AC input voltage of the on-board charger?
   Household AC: 120V (1.2kW per hour)
   AC charging station: 240V, (6kW per hour)

What is the DC output voltage of the on-board charger?
   It depends on the following factors:
   a. Battery pack voltage: DC output voltage must be higher than Battery pack voltage
   b. Optimum charging current (Iopt) for a available charging power (kW) & Battery pack voltage.
   c. Household-AC or AC-charging-station defines the charging power: 1.2kW Vs 6kW. This may affect the optimal charging current & voltage.
   
What is the Battery pack nominal voltage?
   nominal voltage: 352.4V for Extended (328V for Economical)

What type of motor is connected?
   Permanent Magnet Synchronous Motor (PMSM), Max Power 136ps, Max Torque 40.27kgm

Is there an inverter needed in the drive unit?
   YES, inverter is required.
   DC->AC from battery to traction motor
   AC->DC Charging using regenerative braking

Is there a high voltage DC-DC converter on-board the vehicle?
   No, there is no High Voltage DC-DC Converter.
   Though it has a low power DC-DC converter to charge 12V Auxiliary battery.

What type of cooling methodology is used? - Passive air, active air, active liquid?
   Active air cooling using battery cooling fans
   BMS controls the cooling fan to ensure the operating temperature of the battery pack.

Any other interesting observations you'd like to share?
   1. Regenerative braking: During deceleration or braking, vehicles kinetic energy is converted into electrical energy that charged the battery pack.
   2. KONA high voltage electrical system is designed to be isolated from the vehicle chassis.
   3. Gear reduction unit is used to increase the torque to the wheels.
   4. Three level are charging supported: 120V AC, 240V AC and DC charger.
   5. Lithium-ion polymer is used for high voltage battery pack
        6. 98 (90) cells are connected in series that gives 352.8 (324) Volts. Values in () are Economical model.
   7. BMS and PRA (Power Relay Assembly) is mounted in front side of the HV battery pack.


Everything is accurate.

One thing I'd like to add is that the charger voltage can even be lower than the pack voltage and then an internal DC-DC converter could step it up inside the vehicle. Although this is rarely the case but is possible.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 19, 2020, 03:12:35 AM
Good afternoon,

Please find below answer to related to Hyundaï Kona EV.

1. Does your selected EV have on-board charging ?
Yes, it has an on-board charger.

2. What is the rated AC input voltage of the on-board charger?
Rated AC inputs are 120 V or 240 V.

3. What is the DC output voltage of the on-board charger?
DC output voltage is 400 V.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage is 352.8V.

5. What type of motor is connected?
Permanent Magnet Synchronous Motors (PMSM).

6. Is there an inverter needed in the drive unit?
Yes, there is an inverter in the drive unit.

7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Active liquid cooling methodology is used.

9. Any other interesting observations you'd like to share?
Charger plug :  Locking System
BMS & BJB assembled next to the HV battery pack.


Hyundai Kona once again,

All answers are accurate.


We can now start moving to a few other vehicles as well.
Title: Re: Identify the sub-components of a real EV
Post by: arunesh15 on February 20, 2020, 11:54:34 PM
1.Does your selected EV have on-board charging?
   Yes, selected EV(Hyundai Kona Electric) has on-board charging-located in the front-middle region.
2.What is the rated AC input voltage of the on-board charger?
   The rated AC Input Voltage is 120V and 240V
3.What is the DC output voltage of the on-board charger?
   The DC Output Voltage is 400V
4.What is the Battery pack nominal voltage?
   Battery pack nominal voltage has been specified as 352.8V
5.What type of motor is connected?
   Motor Type is Permanent Magnet Synchronous Motor(PMSM) that has been supplied by Siemens
6.Is there an inverter needed in the drive unit?
   Yes, it does and there is an inverter present in the drive unit
7.Is there a high voltage DC-DC converter on-board the vehicle?
   No,it does not have a HV DC-DC converter on-board
8.What type of cooling methodology is used? - Passive air, active air, active liquid?
   Active liquid cooling methodology has been used with a water-based coolant.
9.Any other interesting observations you'd like to share?
   It delivers a torque of 393 N-m
   The drivetrain is Front Wheel Drive(FWD)
   Battery is of Li-ion Polymer chemistry, having 5 modules and has been supplied by LG Chem
   2 variants of battery capacity 39.2kWh and 64kWh are available

Please correct me if any of the info is wrong.
Title: Re: Identify the sub-components of a real EV
Post by: darshan3.dg on February 21, 2020, 12:00:18 AM
Assignment #2 - Identify the sub-components of a real EV.

The Electric vehicle chosen for Assignment 2 is E-Z-GO RXV ELiTE 48V

1. Does your selected EV have on-board charging?
    Yes, the E-Z-GO RXV has an onboard Fast charger.

2. What is the rated AC input voltage of the on-board charger?
    AC Input voltage range of the on-board charger used in this car is 85-265 V AC power.

3. What is the DC output voltage of the on-board charger?
    DC Output voltage range of the on-board charger used in this car is 85-265 VAC power.

4. What is the Battery pack nominal voltage?
    Nominal Voltage of the Battery Pack is 56 V with two Lithium Ion Module.

5. What type of motor is connected?
    48 V AC Motor is used in powertrain of this car which delivers 4.4 hp (3.3 kW) Continuous.

6. Is there an inverter needed in the drive unit?
    Yes, an inverter is needed in the drive unit
    • to convert DC current from battery to AC current to be used in AC Motor to drive Vehicle's propulsion system.
    • to capture energy from regenerative braking and feeding it back to the battery.

7. Is there a high voltage DC-DC converter on-board the vehicle?
    Yes, there is a DC-DC Converter in the vehicles where 12 V Accessories are connected to it.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
    Cooling methodology used in this car is Passive air-cooling and Active Liquid cooling.

9. Any other interesting observations you'd like to share?
    • Efficient Zero Maintenance Lithium Batteries with advanced Battery Management System.
    • Cost of this car is comparatively less than its competitors in golf cars.
Title: Re: Identify the sub-components of a real EV
Post by: arunesh15 on February 21, 2020, 10:54:09 PM
1.Does your selected EV have on-board charging?
   Yes, selected EV(Hyundai Kona Electric) has on-board charging-located in the front-middle region.
2.What is the rated AC input voltage of the on-board charger?
   The rated AC Input Voltage is 120V and 240V
3.What is the DC output voltage of the on-board charger?
   The DC Output Voltage is 400V
4.What is the Battery pack nominal voltage?
   Battery pack nominal voltage has been specified as 352.8V
5.What type of motor is connected?
   Motor Type is Permanent Magnet Synchronous Motor(PMSM) that has been supplied by Siemens
6.Is there an inverter needed in the drive unit?
   Yes, it does and there is an inverter present in the drive unit
7.Is there a high voltage DC-DC converter on-board the vehicle?
   No,it does not have a HV DC-DC converter on-board
8.What type of cooling methodology is used? - Passive air, active air, active liquid?
   Active liquid cooling methodology has been used with a water-based coolant.
9.Any other interesting observations you'd like to share?
   It delivers a torque of 393 N-m
   The drivetrain is Front Wheel Drive(FWD)
   Battery is of Li-ion Polymer chemistry, having 5 modules and has been supplied by LG Chem
   2 variants of battery capacity 39.2kWh and 64kWh are available

Please correct me if any of the info is wrong.
Title: Re: Identify the sub-components of a real EV
Post by: Ajay Rajan on February 21, 2020, 11:25:00 PM
Hi Arunesh,
All the answers are correct. Your observations are also interesting and are accurate.

Here is an interesting fact about your 4th observation:

The 39.2kWh battery pack runs a motor that sends 136hp to the front wheels via a single-speed automatic gearbox. While the power figure may not be particularly exhilarating (the Hyundai Creta’s 1.6-litre diesel motor makes 128hp and 260Nm of torque), it is important to remember that the whopping 395Nm of torque that the electric motor produces is available from the get go. Hyundai claims a 0-100kph time of 9.7seconds!
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on February 22, 2020, 04:03:32 AM
Assignment #2 - Identify the sub-components of a real EV.

The Electric vehicle chosen for Assignment 2 is E-Z-GO RXV ELiTE 48V

1. Does your selected EV have on-board charging?
    Yes, the E-Z-GO RXV has an onboard Fast charger.

2. What is the rated AC input voltage of the on-board charger?
    AC Input voltage range of the on-board charger used in this car is 85-265 V AC power.

3. What is the DC output voltage of the on-board charger?
    DC Output voltage range of the on-board charger used in this car is 85-265 VAC power.

4. What is the Battery pack nominal voltage?
    Nominal Voltage of the Battery Pack is 56 V with two Lithium Ion Module.

5. What type of motor is connected?
    48 V AC Motor is used in powertrain of this car which delivers 4.4 hp (3.3 kW) Continuous.

6. Is there an inverter needed in the drive unit?
    Yes, an inverter is needed in the drive unit
    • to convert DC current from battery to AC current to be used in AC Motor to drive Vehicle's propulsion system.
    • to capture energy from regenerative braking and feeding it back to the battery.

7. Is there a high voltage DC-DC converter on-board the vehicle?
    Yes, there is a DC-DC Converter in the vehicles where 12 V Accessories are connected to it.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
    Cooling methodology used in this car is Passive air-cooling and Active Liquid cooling.

9. Any other interesting observations you'd like to share?
    • Efficient Zero Maintenance Lithium Batteries with advanced Battery Management System.
    • Cost of this car is comparatively less than its competitors in golf cars.


Verified.

An interesting fact is that the motor power is rather small at 3.3kw. this is usually a power rating that you would see in electric motorcycles.

Also golf carts tend to be quite pricy, this one was listed at about 10000$
Title: Re: Identify the sub-components of a real EV
Post by: arunesh15 on February 23, 2020, 11:17:17 PM
Thanks for verifying Mr.Rajan.

Thanks again for the additional info,will keep it in mind,gotta love EVs!
Title: Re: Identify the sub-components of a real EV
Post by: asarath.94 on February 24, 2020, 11:14:51 PM
Selected EV: Tata Nexon EV.

Does your selected EV have onboard charging?
Ans: yes it does. It accepts charging from any 15A plug point and charges over it from 10%-90% in 8.5 hrs.

What is the rated AC input voltage of the on-board charger?
It takes 120/240v AC input to charge via the onboard charger.

What is the DC output voltage of the on-board charger?
Couldnt find this as the vehicle is quite new.

What is the Battery pack nominal voltage?
320v

What type of motor is connected?
The car has a 3phase permanent magnet synchronous motor

Is there an inverter needed in the drive unit?
Yes, the vehicle has a 3phase permanent magnet synchronous motor that needs AC to run.
 
Is there a high voltage DC-DC converter on-board the vehicle?
Yes.

What type of cooling methodology is used? - Passive air, active air, active liquid?
Liquid cooling is used to cool the powertrain components.

Any other interesting observations you'd like to share?
With a rather small battery pack of 30.2kwh Tata claims a 312km range which is quite impressive. But the real-world stats might vary.
Title: Re: Identify the sub-components of a real EV
Post by: Soumic on March 25, 2020, 09:58:50 AM
Dear Sir/Madam,

Please find below reply to the answers as requested through the assignment.

1. Does your selected EV have on-board charging?

Yes!Hyundai KONA has on board charging.

2. What is the rated AC input voltage of the on-board charger?

The Hyundai Kona Electric is fitted with a 7.2 kW on-board charger for Type 2 AC charging, in addition to rapid 50 kW DC capability.

3. What is the DC output voltage of the on-board charger?

DC Output voltage of the on board charger is 77kW.

4. What is the Battery pack nominal voltage?

Nominal voltage for each cell at 3.7V with a configuration of 96 cell(3.7x96=356V).

5. What type of motor is connected?

Hyundai KONA Electric powertrain employs a high-efficiency 150-kW (201 hp) permanent-magnet synchronous electric motor supplied by a high-voltage 64-kWh lithium-ion battery. The motor develops 291 lb-ft of torque distributed to the front wheels.

6. Is there an inverter needed in the drive unit?

Yes for converting AC to DC.

7. Is there a high voltage DC-DC converter on-board the vehicle?

Yes there is a high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?

Hyundai KONA uses active liquid cooling methodology.

Any other interesting observations you'd like to share?

The Hyundai Kona Electric is fitted with a 7.2 kW on-board charger for Type 2 AC charging, in addition to rapid 50 kW DC capability.

Thanks & Regards

Soumic
Title: Re: Identify the sub-components of a real EV
Post by: aditya_shri on April 09, 2020, 11:08:11 AM
Aditya Shrivastava

Hyundai Kona EV

1. Does your selected EV have on-board charging?
A- Yes, it has on-board charging.

2. What is the rated AC input voltage of the on-board charger?
A-120V

3. What is the DC output voltage of the on-board charger?
A-

4.What is the Battery pack nominal voltage?
A- 356V

5. What type of motor is connected?
A- PMSM

6. Is there an inverter needed in the drive unit?
A- Yes, before motor for converting DC to AC.

7. Is there a high voltage DC-DC converter on-board the vehicle?
A- Yes, for fast charging it is present.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
A- Active liquid

9. Any other interesting observations you'd like to share?
A- Fast charging just takes 57 minutes for 0-80%
Title: Re: Identify the sub-components of a real EV
Post by: Nakkela Hari on April 18, 2020, 02:58:42 AM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.

Does your selected EV have on-board charging?
A) Tigor EV

What is the rated AC input voltage of the on-board charger?
A) BEVC-AC001 - 230V

What is the DC output voltage of the on-board charger?
A) BEVC-DC001 - 48/64/72 @ 15kW DC Power (Not known exact voltage).

What is the Battery pack nominal voltage?
A)  Voltage should be around 48/64/72V. (no information found).

What type of motor is connected?
A) 72 V 3-Phase AC Induction Motor

Is there an inverter needed in the drive unit?
A) Yes, to convert DC Power to 3-Phase AC Power to drive 72V, AC Induction Motor.

Is there a high voltage DC-DC converter on-board the vehicle?
A) Yes, there should be on DC-DC converter, to convert AC Power to DC Power when charging using - BEVC-AC001

What type of cooling methodology is used? - Passive air, active air, active liquid?
A) no information found.

Any other interesting observations you'd like to share?
A) 72V, 3-Phase Induction motor used,
Max. Power (kW @ r/min)30 kW @ 4500 r/min
Max. Torque (Nm @ r/min)105 Nm @ 2500 r/min
Battery Capacity (kWh) - 21.5
TransmissionSingle Speed, Automatic
Normal Charging Time (0%-100%)11.5 hrs
Fast Charging Time (0%-80% with 15 kW charger)2 hrs
Max Speed (km/h)80


Report and post your findings on the forum on the following subtopic.
Title: Re: Identify the sub-components of a real EV
Post by: Arjun Muralidharan on April 19, 2020, 07:07:24 AM
Selected EV : Hyundai Kona EV(MY20)

Does your selected EV have on-board charging?
Ans) Yes, it has Onboard charging

What is the rated AC input voltage of the on-board charger?
Ans) 240V is the Rated input voltage ( for 9.5 hours charging)

What is the DC output voltage of the on-board charger?
Ans) 480V DC fast charging: 80% in 75 minutes or less. Charging time based on 50kW DC charging

What is the Battery pack nominal voltage?
Ans) For the Electric 39kWh it is : 319V
For the Electric 64kWh it is : 356V

What type of motor is connected?
Ans) Permanent Magnet Synchronous Motor(PMSM)

Is there an inverter needed in the drive unit?
Ans) Yes, it is needed. Since Motor is Run by AC, to convert Battery voltage DC to motor run AC.
Invertor convert: DC Voltage to AC Voltage

Is there a high voltage DC-DC converter on-board the vehicle?
Ans) Yes, Since fast charging is Available for this model.

What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans) It uses Active Liquid Cooling Methodology

Any other interesting observations you'd like to share?
Ans)
Motor Spec (For 64Kwh):
Max Power: 150kW
Max torque: 395Nm
Top speed:  104mph
High Voltage Battery Spec:
Battery type:          Lithium Battery
Battery Power:     170kW
Battery Capacity: 64kWH/Ah
Voltage:                  356V
ON BOARD CHARGER: 10.5kW spec.





Report and post your findings on the forum on the following subtopic.
[/quote]
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on April 20, 2020, 02:13:11 PM
Selected EV: Tata Nexon EV.

Does your selected EV have onboard charging?
Ans: yes it does. It accepts charging from any 15A plug point and charges over it from 10%-90% in 8.5 hrs.

What is the rated AC input voltage of the on-board charger?
It takes 120/240v AC input to charge via the onboard charger.

What is the DC output voltage of the on-board charger?
Couldnt find this as the vehicle is quite new.

What is the Battery pack nominal voltage?
320v

What type of motor is connected?
The car has a 3phase permanent magnet synchronous motor

Is there an inverter needed in the drive unit?
Yes, the vehicle has a 3phase permanent magnet synchronous motor that needs AC to run.
 
Is there a high voltage DC-DC converter on-board the vehicle?
Yes.

What type of cooling methodology is used? - Passive air, active air, active liquid?
Liquid cooling is used to cool the powertrain components.

Any other interesting observations you'd like to share?
With a rather small battery pack of 30.2kwh Tata claims a 312km range which is quite impressive. But the real-world stats might vary.

Verified. Indeed 30.2kwh is a very small pack. 312km of range probably means that the motor power isn't very high.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on April 20, 2020, 02:15:52 PM
Dear Sir/Madam,

Please find below reply to the answers as requested through the assignment.

1. Does your selected EV have on-board charging?

Yes!Hyundai KONA has on board charging.

2. What is the rated AC input voltage of the on-board charger?

The Hyundai Kona Electric is fitted with a 7.2 kW on-board charger for Type 2 AC charging, in addition to rapid 50 kW DC capability.

3. What is the DC output voltage of the on-board charger?

DC Output voltage of the on board charger is 77kW.

4. What is the Battery pack nominal voltage?

Nominal voltage for each cell at 3.7V with a configuration of 96 cell(3.7x96=356V).

5. What type of motor is connected?

Hyundai KONA Electric powertrain employs a high-efficiency 150-kW (201 hp) permanent-magnet synchronous electric motor supplied by a high-voltage 64-kWh lithium-ion battery. The motor develops 291 lb-ft of torque distributed to the front wheels.

6. Is there an inverter needed in the drive unit?

Yes for converting AC to DC.

7. Is there a high voltage DC-DC converter on-board the vehicle?

Yes there is a high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?

Hyundai KONA uses active liquid cooling methodology.

Any other interesting observations you'd like to share?

The Hyundai Kona Electric is fitted with a 7.2 kW on-board charger for Type 2 AC charging, in addition to rapid 50 kW DC capability.

Thanks & Regards

Soumic

Verified. Everything is correct.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on April 20, 2020, 02:17:20 PM
Aditya Shrivastava

Hyundai Kona EV

1. Does your selected EV have on-board charging?
A- Yes, it has on-board charging.

2. What is the rated AC input voltage of the on-board charger?
A-120V

3. What is the DC output voltage of the on-board charger?
A-

4.What is the Battery pack nominal voltage?
A- 356V

5. What type of motor is connected?
A- PMSM

6. Is there an inverter needed in the drive unit?
A- Yes, before motor for converting DC to AC.

7. Is there a high voltage DC-DC converter on-board the vehicle?
A- Yes, for fast charging it is present.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
A- Active liquid

9. Any other interesting observations you'd like to share?
A- Fast charging just takes 57 minutes for 0-80%

Verified. Another important point is that fast charging generally reduces the long term life of battery pack.
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on April 20, 2020, 02:26:21 PM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.

Does your selected EV have on-board charging?
A) Tigor EV

What is the rated AC input voltage of the on-board charger?
A) BEVC-AC001 - 230V

What is the DC output voltage of the on-board charger?
A) BEVC-DC001 - 48/64/72 @ 15kW DC Power (Not known exact voltage).

What is the Battery pack nominal voltage?
A)  Voltage should be around 48/64/72V. (no information found).

What type of motor is connected?
A) 72 V 3-Phase AC Induction Motor

Is there an inverter needed in the drive unit?
A) Yes, to convert DC Power to 3-Phase AC Power to drive 72V, AC Induction Motor.

Is there a high voltage DC-DC converter on-board the vehicle?
A) Yes, there should be on DC-DC converter, to convert AC Power to DC Power when charging using - BEVC-AC001

What type of cooling methodology is used? - Passive air, active air, active liquid?
A) no information found.

Any other interesting observations you'd like to share?
A) 72V, 3-Phase Induction motor used,
Max. Power (kW @ r/min)30 kW @ 4500 r/min
Max. Torque (Nm @ r/min)105 Nm @ 2500 r/min
Battery Capacity (kWh) - 21.5
TransmissionSingle Speed, Automatic
Normal Charging Time (0%-100%)11.5 hrs
Fast Charging Time (0%-80% with 15 kW charger)2 hrs
Max Speed (km/h)80


Report and post your findings on the forum on the following subtopic.

Verified
Title: Re: Identify the sub-components of a real EV
Post by: Jaideep on April 20, 2020, 02:28:45 PM
Selected EV : Hyundai Kona EV(MY20)

Does your selected EV have on-board charging?
Ans) Yes, it has Onboard charging

What is the rated AC input voltage of the on-board charger?
Ans) 240V is the Rated input voltage ( for 9.5 hours charging)

What is the DC output voltage of the on-board charger?
Ans) 480V DC fast charging: 80% in 75 minutes or less. Charging time based on 50kW DC charging

What is the Battery pack nominal voltage?
Ans) For the Electric 39kWh it is : 319V
For the Electric 64kWh it is : 356V

What type of motor is connected?
Ans) Permanent Magnet Synchronous Motor(PMSM)

Is there an inverter needed in the drive unit?
Ans) Yes, it is needed. Since Motor is Run by AC, to convert Battery voltage DC to motor run AC.
Invertor convert: DC Voltage to AC Voltage

Is there a high voltage DC-DC converter on-board the vehicle?
Ans) Yes, Since fast charging is Available for this model.

What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans) It uses Active Liquid Cooling Methodology

Any other interesting observations you'd like to share?
Ans)
Motor Spec (For 64Kwh):
Max Power: 150kW
Max torque: 395Nm
Top speed:  104mph
High Voltage Battery Spec:
Battery type:          Lithium Battery
Battery Power:     170kW
Battery Capacity: 64kWH/Ah
Voltage:                  356V
ON BOARD CHARGER: 10.5kW spec.





Report and post your findings on the forum on the following subtopic.
[/quote]

Verified.

An important conclusion here is that any kind of EV over a certain power rating will always have liquid cooling. Air cooling is no longer viable. The same fact is also observed in IC engine cars.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: anand sing lollbeeharry on April 23, 2020, 02:00:49 AM
Q 1: Does your selected EV have on-board charging ?
Answer: Yes it has on-board charger.
Q 2: What is the input voltage of the on-board charger?
Answer: In Mauritus it is 240 V.
Q 3: What is the Dc output voltage of the on-board charger?
Answer: The on-board charger DC output voltage must be higher than the Battery pack voltage.
Q 4: What is the Battery pack nominal voltage?
Answer: The nominal voltage is 352.4 V.
Q 5: What type of motor is connected?
Answer: A Permanent Magnet Synchronous Motor (PMSM) is connected (Max. Power 136 ps & Torque 40.27 kgm).
Q 6: Is there an inverter needed in the drive unit?
Answer: yes DC to AC from battery to Traction Motor.
Q 7: Is there a high voltage DC-DC converter on-board the vehicle?
Answer: No there isn't high DC-DC converter. In fact we have a low voltage DC-DC converter to charge the 12v battery. 
Q 8: What type of cooling Methodology is used? - Passive air, active air, active liquid?
Answer: Active liquid cooling methodology is used.
Q 9: Any other interesting observations you'd like to share?
I will drop my observations in the future.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: ram keshav on April 25, 2020, 06:36:52 AM
1)Does your selected EV has on -board charging?
 answer:Yes !!!Hyundai kona has on -board charging.
2)what is the rated input voltage of On-board charger?
answer:It takes 240V AC input of ON -board charger.
3)what is the DC output voltage of ON-board charger?
answer:The Hyundai Kona is fitted with 7.2KW On-board charger for type-2 AC charging. in addition to rapid 50 kW DC capability.
4)What is the Battery pack nominal voltage?
answer:Battery pack nominal voltage for Hyundai kona is 327V.
5)What type of motor is connected?
answer:Permanent Magnet Synchronous Motor(PMSM) .SPEC:(MAX POWER:136PS,MAX TORQUE:40.27Kgm)
6)Is there an inverter needed in the drive unit?
answer:Yes,convert dc output voltage from battery to supply AC PMSM motor.
7)Is there a high voltage DC-DC converter on-board the vehicle?
answer:Yes
8)What type of cooling methodology is used?
answer:Active liquid cooling is employed here.
9)Any other interesting observations you'd like to share?
      i)   it has highest electric driving range(312km and 482km ).
      ii)  using a 50kW DC fast charger, the Kona’s lithium-ion battery pack can be charged up to 80% in 57 minutes for the long range. With a standard AC socket, it takes around 6 hours 10 minutes for the short range.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: taurai on April 28, 2020, 09:37:30 PM
1. Does your selected EV have on-board charging?
yes

2.What is the rated AC input voltage of the on-board charger?
120v/240v dual option

3.What is the DC output voltage of the on-board charger?
400v

4.What is the Battery pack nominal voltage?
356v

5.What type of motor is connected?
3 phase Ac permanent magnet synchronous motor.

6.Is there an inverter needed in the drive unit?
yes to invert high voltage Dc to 3 phase AC

7.Is there a high voltage DC-DC converter on-board the vehicle?
yes

8.What type of cooling methodology is used? - Passive air, active air, active liquid?
Active liquid cooling.

9.Any other interesting observations you'd like to share?
 Electric Power Control Unit (EPCU)
Electric Power Control Unit (EPCU) optimizes control of the vehicle performance and provides a pleasant driving experience with reliable control of the DC/AC inverter to drive the electric motor as well as the low voltage DC-DC converter to supply power to its electronic components.


Title: Re: Assignment: Identify the sub-components of a real EV
Post by: ks1697 on April 29, 2020, 10:08:56 AM
The car I've chosen for this study is a Porsche Taycan Turbo/Turbo S

1. Does your selected EV have on-board charging?
Ans:    Yes.
           Consists of Two charge ports:
           It has 50kW DC output and 150kW DC output (optional)
           AC Input is 11kW (will soon have 19.2kW AC input
           Source: https://www.caranddriver.com/news/a28903284/porsche-taycan-ev-800-volt-charging-performance/
                        https://newsroom.porsche.com/en/products/taycan/charging-18558.html

 2. What is the rated AC input voltage of the on-board charger?
 Ans:  11kW at 240/220 V 3-Phase
          Source: https://en.wikipedia.org/wiki/Porsche_Taycan

 3. What is the DC output voltage of the on-board charger?
 Ans:  270kW at 800V DC output
          Source: https://en.wikipedia.org/wiki/Porsche_Taycan

4. What is the Battery pack nominal voltage?
Ans:   723V (Nominal Voltage Rating)
          Source: https://arstechnica.com/cars/2019/09/everything-you-wanted-to-know-about-porsches-new-electric-car/
   
5. What type of motor is connected?
Ans:   2 AC synchronous electric motors with Hairpin Windings, front, and rear axle
         
6. Is there an inverter needed in the drive unit?
Ans:   Pulse Controlled Inverter: The pulse-controlled inverters convert the direct current supplied by the
          Performance Battery Plus into the alternating current required to drive the electric motors
 
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans:   Yes.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:   Active Liquid
          Cooling Distribution Systems also nicknamed as "Snake Pit".
          This is a series of tubes distributing cooling fluid to various parts of the car – the battery, chargers, motors, etc.
          The cooling system was placed in this part of the car because it’s next to the AC and DC chargers. 
          Source: https://electrek.co/2019/12/26/see-whats-underneath-and-inside-the-porsche-taycan/
 
Source for Questions 5 - 7:
           Source: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8 ved=2ahUKEwiW9vXaiY7pAhVqyzgGHcEYCCEQFjAAegQIAxAB&url=https%3A%2F%2Fnewsroom.porsche.com%2Fdam%2Fjcr%3A93483663-c12b-43ca-98f5-b1b8b845e321%2FPAG_Taycan_Technology_PM_EN.pdf.PDF&usg=AOvVaw2SMkG2-mQ6t1wNu_fjk9py

9. Any other interesting observations you'd like to share?
Ans:    Yes, The Porsche Turbo/Trubo S uses a transmission unit.
           (2 Speed Transmission/Gearbox)
           1-speed direct-drive (front 8.05:1)
           2-speed automatic (rear; 16:1 and 8.05:1)
           And an Integrated Limited Slip Differential (I-LSD)
           Source: https://en.wikipedia.org/wiki/Porsche_Taycan
                        https://pontoon-e.com/an-extremely-detailed-look-at-the-porsche-taycans-engineering-designed-to-take-on-tesla/
Title: Assignment: Identify the sub-components of a real EV
Post by: kiran_mnnit on May 01, 2020, 08:50:31 PM
Tesla Model S

1. Does your selected EV have on-board charging?
Ans:    Yes, The Tesla Model S is fitted with a 16.5 kW on-board charger
            Source: https://www.zap-map.com/charge-points/tesla-model-s-charging-guide/

 2. What is the rated AC input voltage of the on-board charger?
 Ans:  Split Phase – 208/240V and ~15 to 80A

 3. What is the DC output voltage of the on-board charger?
 Ans:  A Tesla Supercharger is a 480-volt DC fast-charging technology built by American vehicle manufacturer Tesla Inc.

4. What is the Battery pack nominal voltage?
Ans:   375V
   
5. What type of motor is connected?
Ans:   Tesla uses 3 phase 4 pole Induction Motor
         
6. Is there an inverter needed in the drive unit?
Ans:   Tesla manufactures their own Inverter: The inverters convert the DC supplied by the Battery Pack into the AC required to drive the electric motors
 
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans:   Yes. 375 V - 12 V

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:   Active Liquid
          The Tesla models S battery cooling system consists of a patented serpentine cooling pipe that winds through the battery pack and carries a flow of water-glycol coolant, thermal contact with the cells is through their sides by thermal transfer material.
 
9. Any other interesting observations you'd like to share?
Ans:    BATTERY & DRIVE
70 kWh All-Wheel Drive
85 kWh Rear Wheel Drive
85 kWh All-Wheel Drive
85 kWh Performance All-Wheel Drive
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: mihirpawar on May 02, 2020, 12:46:43 PM

Hyundia Kona


Does your selected EV have on-board charging?
Yes
What is the rated AC input voltage of the on-board charger?
120V/240V
What is the DC output voltage of the on-board charger?
50Kw
What is the Battery pack nominal voltage?
356V
What type of motor is connected?
PMC from Siemens
Is there an inverter needed in the drive unit?
Yes
Is there a high voltage DC-DC converter on-board the vehicle?
What type of cooling methodology is used? - Passive air, active air, active liquid?
Water Based Coolant
Any other interesting observations you'd like to share?
Lithium Polymer Chemistry Used
No Smart Connectivity Features
 
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: mihirpawar on May 02, 2020, 12:49:19 PM

Hyundia Kona


Does your selected EV have on-board charging?
Yes
What is the rated AC input voltage of the on-board charger?
120V/240V
What is the DC output voltage of the on-board charger?
50Kw
What is the Battery pack nominal voltage?
356V
What type of motor is connected?
PMC from Siemens
Is there an inverter needed in the drive unit?
Yes
Is there a high voltage DC-DC converter on-board the vehicle?
Yes
What type of cooling methodology is used? - Passive air, active air, active liquid?
Water Based Coolant
Any other interesting observations you'd like to share?
Lithium Polymer Chemistry Used
No Smart Connectivity Features
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: anandgang26 on May 03, 2020, 05:01:14 AM
1. Does your selected EV have on-board charging?
Yes, it has an on-board charger.

2. What is the rated AC input voltage of the on-board charger?
Rated AC inputs are 120 V or 240 V.

3. What is the DC output voltage of the on-board charger?
DC output voltage is 400 V.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage is 352 V


5. What type of motor is connected?
AC Permanent Magnet Synchronous Motors (PMSM).

6. Is there an inverter needed in the drive unit?
[/b]Yes, there is an inverter in the drive unit.
[/b]
7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Active --- liquid cooling methodology is used.

9. Any other interesting observations you'd like to share?
Charger plug :  Locking System
7.2kW onboard charge for type 2 ac charging
In addition 50kW DC capability ;this means that even when connected to a fast charger with a rated o/p above 7.2kW , the car will only be able to charge at7.2kW   
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: anandgang26 on May 03, 2020, 05:03:03 AM
does anybody know RIVIAN  R1T SPECIFICATIONS?
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Kulgiri on May 04, 2020, 10:34:16 PM
I have Selected the Nissan Leaf and following are the observations on this vehicle .

Does your selected EV have on-board charging?   
  It is fitted with 6.6 Kw on Board Charger for Type 2 AC charging in addition to rapid 50 Kw DC capability

What is the rated AC input voltage of the on-board charger? 
 120 V, 240 V

What is the DC output voltage of the on-board charger?     
6.0 Kw

What is the Battery pack nominal voltage?
Nominal voltage across one Module is 7.5 V and across the pack is 360 V

What type of motor is connected?
 Electric Synchronous motor with 80 Kw

Is there an inverter needed in the drive unit?
No, Nissan Leaf uses a DC-DC motor .

Is there a high voltage DC-DC converter on-board the vehicle?
Yes .there is a DC –DC converter which also charges the 12V battery .

What type of cooling methodology is used? - Passive air, active air, active liquid?
Passive Air Cooling .

Any other interesting observations you'd like to share?
Nissan gives a 8 year warranty on battery








Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 07:59:53 AM
1. Does your selected EV have on-board charging?
yes

2.What is the rated AC input voltage of the on-board charger?
120v/240v dual option

3.What is the DC output voltage of the on-board charger?
400v

4.What is the Battery pack nominal voltage?
356v

5.What type of motor is connected?
3 phase Ac permanent magnet synchronous motor.

6.Is there an inverter needed in the drive unit?
yes to invert high voltage Dc to 3 phase AC

7.Is there a high voltage DC-DC converter on-board the vehicle?
yes

8.What type of cooling methodology is used? - Passive air, active air, active liquid?
Active liquid cooling.

9.Any other interesting observations you'd like to share?
 Electric Power Control Unit (EPCU)
Electric Power Control Unit (EPCU) optimizes control of the vehicle performance and provides a pleasant driving experience with reliable control of the DC/AC inverter to drive the electric motor as well as the low voltage DC-DC converter to supply power to its electronic components.

Please mention the name of the EV as well so I can cross check.

Thanks
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:03:16 AM
The car I've chosen for this study is a Porsche Taycan Turbo/Turbo S

1. Does your selected EV have on-board charging?
Ans:    Yes.
           Consists of Two charge ports:
           It has 50kW DC output and 150kW DC output (optional)
           AC Input is 11kW (will soon have 19.2kW AC input
           Source: https://www.caranddriver.com/news/a28903284/porsche-taycan-ev-800-volt-charging-performance/
                        https://newsroom.porsche.com/en/products/taycan/charging-18558.html

 2. What is the rated AC input voltage of the on-board charger?
 Ans:  11kW at 240/220 V 3-Phase
          Source: https://en.wikipedia.org/wiki/Porsche_Taycan

 3. What is the DC output voltage of the on-board charger?
 Ans:  270kW at 800V DC output
          Source: https://en.wikipedia.org/wiki/Porsche_Taycan

4. What is the Battery pack nominal voltage?
Ans:   723V (Nominal Voltage Rating)
          Source: https://arstechnica.com/cars/2019/09/everything-you-wanted-to-know-about-porsches-new-electric-car/
   
5. What type of motor is connected?
Ans:   2 AC synchronous electric motors with Hairpin Windings, front, and rear axle
         
6. Is there an inverter needed in the drive unit?
Ans:   Pulse Controlled Inverter: The pulse-controlled inverters convert the direct current supplied by the
          Performance Battery Plus into the alternating current required to drive the electric motors
 
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans:   Yes.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:   Active Liquid
          Cooling Distribution Systems also nicknamed as "Snake Pit".
          This is a series of tubes distributing cooling fluid to various parts of the car – the battery, chargers, motors, etc.
          The cooling system was placed in this part of the car because it’s next to the AC and DC chargers. 
          Source: https://electrek.co/2019/12/26/see-whats-underneath-and-inside-the-porsche-taycan/
 
Source for Questions 5 - 7:
           Source: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8 ved=2ahUKEwiW9vXaiY7pAhVqyzgGHcEYCCEQFjAAegQIAxAB&url=https%3A%2F%2Fnewsroom.porsche.com%2Fdam%2Fjcr%3A93483663-c12b-43ca-98f5-b1b8b845e321%2FPAG_Taycan_Technology_PM_EN.pdf.PDF&usg=AOvVaw2SMkG2-mQ6t1wNu_fjk9py

9. Any other interesting observations you'd like to share?
Ans:    Yes, The Porsche Turbo/Trubo S uses a transmission unit.
           (2 Speed Transmission/Gearbox)
           1-speed direct-drive (front 8.05:1)
           2-speed automatic (rear; 16:1 and 8.05:1)
           And an Integrated Limited Slip Differential (I-LSD)
           Source: https://en.wikipedia.org/wiki/Porsche_Taycan
                        https://pontoon-e.com/an-extremely-detailed-look-at-the-porsche-taycans-engineering-designed-to-take-on-tesla/

Great Choice.

A very interesting thing we can see here is the car uses a very high voltage system. Almost 800V.

There are many reasons why this is done.
Since it's a performance sports car, one reason could be to reduce the weight of power cables they went with 800V as the current draw would then be less for the same power output.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:05:04 AM
Tesla Model S

1. Does your selected EV have on-board charging?
Ans:    Yes, The Tesla Model S is fitted with a 16.5 kW on-board charger
            Source: https://www.zap-map.com/charge-points/tesla-model-s-charging-guide/

 2. What is the rated AC input voltage of the on-board charger?
 Ans:  Split Phase – 208/240V and ~15 to 80A

 3. What is the DC output voltage of the on-board charger?
 Ans:  A Tesla Supercharger is a 480-volt DC fast-charging technology built by American vehicle manufacturer Tesla Inc.

4. What is the Battery pack nominal voltage?
Ans:   375V
   
5. What type of motor is connected?
Ans:   Tesla uses 3 phase 4 pole Induction Motor
         
6. Is there an inverter needed in the drive unit?
Ans:   Tesla manufactures their own Inverter: The inverters convert the DC supplied by the Battery Pack into the AC required to drive the electric motors
 
7. Is there a high voltage DC-DC converter on-board the vehicle?
Ans:   Yes. 375 V - 12 V

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Ans:   Active Liquid
          The Tesla models S battery cooling system consists of a patented serpentine cooling pipe that winds through the battery pack and carries a flow of water-glycol coolant, thermal contact with the cells is through their sides by thermal transfer material.
 
9. Any other interesting observations you'd like to share?
Ans:    BATTERY & DRIVE
70 kWh All-Wheel Drive
85 kWh Rear Wheel Drive
85 kWh All-Wheel Drive
85 kWh Performance All-Wheel Drive

Verified
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:05:46 AM

Hyundia Kona


Does your selected EV have on-board charging?
Yes
What is the rated AC input voltage of the on-board charger?
120V/240V
What is the DC output voltage of the on-board charger?
50Kw
What is the Battery pack nominal voltage?
356V
What type of motor is connected?
PMC from Siemens
Is there an inverter needed in the drive unit?
Yes
Is there a high voltage DC-DC converter on-board the vehicle?
What type of cooling methodology is used? - Passive air, active air, active liquid?
Water Based Coolant
Any other interesting observations you'd like to share?
Lithium Polymer Chemistry Used
No Smart Connectivity Features

Verified
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:07:05 AM
1. Does your selected EV have on-board charging?
Yes, it has an on-board charger.

2. What is the rated AC input voltage of the on-board charger?
Rated AC inputs are 120 V or 240 V.

3. What is the DC output voltage of the on-board charger?
DC output voltage is 400 V.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage is 352 V


5. What type of motor is connected?
AC Permanent Magnet Synchronous Motors (PMSM).

6. Is there an inverter needed in the drive unit?
[/b]Yes, there is an inverter in the drive unit.
[/b]
7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Active --- liquid cooling methodology is used.

9. Any other interesting observations you'd like to share?
Charger plug :  Locking System
7.2kW onboard charge for type 2 ac charging
In addition 50kW DC capability ;this means that even when connected to a fast charger with a rated o/p above 7.2kW , the car will only be able to charge at7.2kW   


Please mention the selected EV's name so I can cross check
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:08:06 AM
does anybody know RIVIAN  R1T SPECIFICATIONS?

Everything hasn't been made public yet but some of the specs are listed here: https://rivian.com/r1t/
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Jaideep on May 07, 2020, 08:11:50 AM
I have Selected the Nissan Leaf and following are the observations on this vehicle .

Does your selected EV have on-board charging?   
  It is fitted with 6.6 Kw on Board Charger for Type 2 AC charging in addition to rapid 50 Kw DC capability

What is the rated AC input voltage of the on-board charger? 
 120 V, 240 V

What is the DC output voltage of the on-board charger?     
6.0 Kw

What is the Battery pack nominal voltage?
Nominal voltage across one Module is 7.5 V and across the pack is 360 V

What type of motor is connected?
 Electric Synchronous motor with 80 Kw

Is there an inverter needed in the drive unit?
No, Nissan Leaf uses a DC-DC motor .

Is there a high voltage DC-DC converter on-board the vehicle?
Yes .there is a DC –DC converter which also charges the 12V battery .

What type of cooling methodology is used? - Passive air, active air, active liquid?
Passive Air Cooling .

Any other interesting observations you'd like to share?
Nissan gives a 8 year warranty on battery

 Good Car Choice.

Since the car is powered by a Synchronous Motor, it will need some kind of inverter to operate it. A synchronous motor requires sinusoidal AC to operate which is created by switching the DC voltage through a 3 phase inverter bridge.

They have a new model out as well which has a more powerful motor and larger battery pack.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: anandgang26 on May 07, 2020, 09:31:02 AM
1. Does your selected EV have on-board charging?
Yes, it has an on-board charger.

2. What is the rated AC input voltage of the on-board charger?
Rated AC inputs are 120 V or 240 V.

3. What is the DC output voltage of the on-board charger?
DC output voltage is 400 V.

4. What is the Battery pack nominal voltage?
The battery pack nominal voltage is 352 V


5. What type of motor is connected?
AC Permanent Magnet Synchronous Motors (PMSM).

6. Is there an inverter needed in the drive unit?
[/b]Yes, there is an inverter in the drive unit.
[/b]
7. Is there a high voltage DC-DC converter on-board the vehicle?
There is no high voltage DC-DC converter on-board the vehicle.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
Active --- liquid cooling methodology is used.

9. Any other interesting observations you'd like to share?
Charger plug :  Locking System
7.2kW onboard charge for type 2 ac charging
In addition 50kW DC capability ;this means that even when connected to a fast charger with a rated o/p above 7.2kW , the car will only be able to charge at7.2kW   


Please mention the selected EV's name so I can cross check

Hyundai Kona electric
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: anandgang26 on May 07, 2020, 09:38:34 AM
IN ATHER 450X MOTOR USED IS PMSM FOR 3KW POWER RATING
SINCE PMSM IS AC TYPE MOTOR , TO USE AS AC TYPE IN TWO WHEELER , AS POWER CONVERSION MIGHT ADD INVERTOR TO THE SYSTEM WHICH RESULTS IN BULKIER SYSTEM 
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: sharadyeola@yahoo.co.in on May 12, 2020, 08:55:22 PM
1.   Does your selected EV have on-board charge-
         - Yes, It has On-Board Charger
2.   What is the rated AC input voltage of the on-board charger?
        -  Level II – rated  AC input voltage is 240 V
3.   What is the DC output voltage of the on-board charger?
         - DC output voltage of the on-board charger is 404V
4.   What is the Battery pack nominal voltage?
        - Battery Pack Nominal Voltage is 356 Volts
5.   What type of motor is connected?
        - Permanent Magnet Synchronous Motor
6.   Is there an inverter needed in the drive unit?
       - Yes, the inverter unit is needed in the drive unit
7.   Is there a high voltage DC-DC converter on-board the vehicle?
       - Yes, there is high voltage converter on board the vehicle.
8.   What type of cooling methodology is used? - Passive air, active air, active liquid?
       - Based on the coolant Pump unit & tube lines it shown in picture, It is having active  liquid cooling system
9.   Any other interesting observations you'd like to share?
       - The interesting fact is like that Motor Controller Unit is Packaged below On Board Charger Unit as well as DC to DC converter is packaged vertically. So, overall packaging of
          On- board charger, DC to DC converter & Motor controller drive unit has been packaged in compact way.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Hrishikesh777 on May 22, 2020, 09:53:33 AM
Does your selected EV have on-board charging?
Jaguar I-pace have on board charger.
What is the rated AC input voltage of the on-board charger ?
230volt
What is the DC output voltage of the on-board charger?
12volt to 400 volt
What is the Battery pack nominal voltage?
390 volt
What type of motor is connected?
Permanent Magnet Synchronous Motor.
Is there an inverter needed in the drive unit?
yes.
Is there a high voltage DC-DC converter on-board the vehicle?
yes.
What type of cooling methodology is used? - Passive air, active air, active liquid?
liquid cooling.

Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Mohammed Arifuddin Mallick on May 31, 2020, 12:34:06 PM
Assignment -2
ELECTRIC CAR NAME :Hyundai Kona EV
1.Does your selected EV have on board charging? Answer:Yes,7.2kW
2. What is the rated AC input voltage of the on board charger?  Answer: 230Volt
3. What is the DC output voltage of  he on board charger? Answer: 600Volt
4. What is the battery pack peak nominal voltage? Answer: 400V
5.What type of motor is connected ? Answer:PMSM(Permanemnt magnet synchronous motor)
6.Is there an inverter needed in the drive circuit? Answer:Yes
7. Is there a high voltage DC-DC converter on board the vehicle? Answer :Yes
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: JLloyd on June 07, 2020, 11:15:31 AM
I used the Audi e-tron for this assignment.

1.   Does your selected EV have on-board charging?
Yes, the Audi e-tron does come with an on-board charger.
2.   What is the rated AC input voltage of the on-board charger?
The on-board charger has 2 acceptable input voltages. Level 1 is used for standard 120V circuits and Level 2 is used for 240V systems.
3.   What is the DC output voltage of the on-board charger?
The DC output voltage of the on-board charger is 400V
4.   What is the Battery pack nominal voltage?
Battery pack nominal voltage is 396V
5.   What type of motor is connected?
The Audi e-tron is equipped with 2 asynchronous AC motors, one for the front axle and one for the rear combining for 402hp.
6.   Is there an inverter needed in the drive unit?
Yes, an inverter is needed to convert the DC power from the battery to AC to power the motors. Each motor is equipped with its own power electronics module to convert the electricity. The inverter includes a microcontroller which is used for controlling the motor as well as monitoring the thermal management system of the electrical units.
7.   Is there a high voltage DC-DC converter on-board the vehicle?
Yes, the e-tron is equipped with a DC-DC converter.
8.   What type of cooling methodology is used? - Passive air, active air, active liquid?
The e-tron is cooled using active liquid. 22L of coolant circulate around 40m of cooling pipes throughout the vehicle.
9.   Any other interesting observations you'd like to share?
The Audi e-tron comes with a recuperation system which is responsible for up to 30% of the car's range. Its electric motors function as a generator and convert the kinetic energy of the Audi e-tron into electric energy. Recuperation can be achieved both when the driver releases the accelerator and when applying pressure to the brake.
Sources:
 https://www.audi-mediacenter.com/en/technology-lexicon-7180/drive-system-7227
https://en.wikipedia.org/wiki/Audi_e-tron_(2018)
https://www.guideautoweb.com/en/makes/audi/e-tron/2019/specifications/progressiv-quattro/
https://www.audi.ca/dam/nemo/ca/Models/e-tron/lifestyle/e-tron_Take_Charge.pdf

Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Vaishnavi Natarajan on June 16, 2020, 06:10:39 AM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.
I am using Hyundai Kona EV as a reference for this assignment
Does your selected EV have on-board charging?
yes, Hyundai Kona has an on-board charger.
What is the rated AC input voltage of the on-board charger?
Input Voltage is 70-205VAC 
What is the DC output voltage of the on-board charger?
DC output voltage is 225-421VDC
What is the Battery pack nominal voltage?
Battery voltage is 327V and not sure about the nominal battery voltage.
What type of motor is connected?
Permanent-magnet synchronous motor.
Is there an inverter needed in the drive unit?
Yes, the inverter is required to convert the DC voltage from the battery pack to AC voltage which is sent to the motor.
Is there a high voltage DC-DC converter on-board the vehicle?
Yes, a high voltage DC-DC convertor is available to step down the voltage from the high voltage battery pack and send it to the 12 V battery.
What type of cooling methodology is used? - Passive air, active air, active liquid?
The active liquid is used as a coolant.
Any other interesting observations you'd like to share?
There are three different types of charging available,
Level 1: 120 V AC input, charges at a rate of 1.2 KW per hour(59 hours from empty to 100%)
Level 2: 240 V AC input, 6KW per hour (9.5 hours from empty to 100%)
Level 3: DC fast charger available for public use. Two different charger types available are  50KW charger and 100 KW charger (requires Combo connector for charging)

Links for reference:
https://youtu.be/ORCHogjilxg
https://youtu.be/o8moc34I1-o
https://www.autocarindia.com/car-reviews/2019-hyundai-kona-electric-review-road-test-414183
Report and post your findings on the forum on the following subtopic.
[/quote]
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Avinash on June 17, 2020, 04:02:40 AM
Assignment #2 - Identify the sub-components of a real EV
1.   Does your selected EV have on-board charging?
Yes, Hyundai Kona electric vehicle have OBC (On- board charger)  output 7.2 kW
2.   What is the rated AC input voltage of the on-board charger?
Input voltage   --> 70-281 Vac
3.   What is the DC output voltage of the on-board charger?
Output voltage --> 225-421 Vdc
4.   What is the Battery pack nominal voltage?
Battery pack Nominal voltage--> 51.8 V
5.   What type of motor is connected?
Permanent synchronous motor (PMSM)
6.   Is there an inverter needed in the drive unit?
Yes, it is under EPCU (Electronic power control unit)
7.   Is there a high voltage DC-DC converter on-board the vehicle?
No, there is LDC converter which is under EPCU (Electronic power control unit)
8.   What type of cooling methodology is used? - Passive air, active air, active liquid?
Active liquid cooling methodology used in Hyundai Kona Electric
9.   Any other interesting observations you'd like to share?
Yes, Instead of separate power control unit,Hyundai Kona have a single EPCU which have three main parts; Inverter, LDC (Low voltage DC which steps down to 12 V), VCU (Vehicle control unit)
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: vikasp1999@gmail.com on June 18, 2020, 12:23:52 PM
1.      Does your selected EV have on-board charging?

Ans: Yes, there is an on-board charging.

2.      What is the rated AC input voltage of the on-board charger?

Ans: Rated AC input Voltage Level 1: 120V

Rated AC input Voltage Level 2: 240V

3.      What is the DC output voltage of the on-board charger?

Ans: DC output voltage of the on-board charger should be more than the battery pack nominal voltage. In this case it could be 400V as the battery pack nominal voltage is rated at 356V.

4.      What is the Battery pack nominal voltage?

Battery pack nominal voltage is 356V, reference:

5.      What type of motor is connected?

Motor here used is of Permanent Magnet Synchronous motor.

6.      Is there an inverter needed in the drive unit?

Yes.

7.      Is there a high voltage DC-DC converter on-board the vehicle?

Yes.

8.      What type of cooling methodology is used? - Passive air, active air, active liquid?

The cooling methodology used here is active liquid cooling.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Sivaram on July 03, 2020, 07:48:37 PM
Hyundai Kona is used for writing assignment.

1. Does your selected EV have on-board charging?
    Yes, Kona has an on-board charger

2. What is the rated AC input voltage of the on-board charger?
    Rated input voltage of the on-board charger is 70~205V AC

3. What is the DC output voltage of the on-board charger?
    DC output voltage of the on-board charger is 225~421V DC

4. What is the Battery pack nominal voltage?
    356 V

5. What type of motor is connected?
    Permanent Magnet Synchronous Motor

6. Is there an inverter needed in the drive unit?
    Yes

7. Is there a high voltage DC-DC converter on-board the vehicle?
    Yes

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
    active liquid

9. Any other interesting observations you'd like to share?
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: zaidtalab on July 19, 2020, 03:20:49 AM
Assignment #2
EV subcomponents
Study of TATA Nexon EV

Q. Does your selected EV have on-board charging?
A.  Yes, to convert the AC Supply from external wall charger into DC. Normal charger type I is used of 120V/15A plug point.

Q.  What is the rated AC input voltage of the on-board charger?
A.  The rated AC input voltage is 120V for level I charger.

Q.  What is the DC output voltage of the on-board charger?
A.  DC output voltage of OBC has to be greater than battery pack nominal voltage that is greater than 320V or less than 400V. OBC has rated power of 3.3Kw AC.

Q. What is the Battery pack nominal voltage?
A. Polymer Lithium ion battery pack used. It is rated at 320V. Power of 30.2 Kwhr.

Q. What type of motor is connected?
A. Liquid cooled commutator less AC Permanent Magnet Synchronous Motor is used. Power of 129 PS and torque of 245Nm.

Q. Is there an inverter needed in the drive unit?
A. Yes, since the DC supply has to be converted to AC for the PMSM to operate the electric motor and drive the wheels.

Q.  Is there a high voltage DC-DC converter on-board the vehicle?
A.  Yes,  to convert the HV DC from 320 Volts traction battery and to charge the auxiliary lead acid battery of 12 Volts. To power the peripherals electronics like power windows, head lamps, indicators, wipers, brake lights, etc.

Q.  What type of cooling methodology is used? - Passive air, active air, active liquid?
A.  Active liquid coolant is needed to cool and dissipate heat away from Motors, battery, other sub components etc. Coolant circulated through black tubes through the Li-Ion battery pack.

Q. Any other interesting observations you'd like to share?
A. It is a front wheel drive EV with Ziptron technology single speed transmission.
It has 300kms range on a single  charge.
It has two charge options CCS2 charger Level I regular charge in 8 hrs, and DC fast charging charges in 60 mins.
Battery used is IP67 Std water resistant upto 1 meter or 30 mins.
High voltage lines are orange color cables.
Weight of battery pack is 1400kgs located in middle bottom of chassis.

Best Regards,
Zayd R

Report and post your findings on the forum on the following subtopic.
[/quote]
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: hiten on July 19, 2020, 10:57:04 AM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.

I've referred to the pictures of Hyundai Kona EV for this assignment.
Does your selected EV have on-board charging? Yes
What is the rated AC input voltage of the on-board charger?
What is the DC output voltage of the on-board charger?
What is the Battery pack nominal voltage? 352.4V
What type of motor is connected? Permanent magnet synchronous motor
Is there an inverter needed in the drive unit? Yes, to convert DC voltage to AC voltage
Is there a high voltage DC-DC converter on-board the vehicle? No
What type of cooling methodology is used? - Passive air, active air, active liquid? Active liquid
Any other interesting observations you'd like to share?


Report and post your findings on the forum on the following subtopic.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: jameel on July 28, 2020, 10:42:47 PM
Following the lectures in which you learned about identifying sub-components of a real EV. It's your turn now - using pictures, videos or an actual electric vehicle identify the following sub-components and answer these questions.

If you don't have an example in mind, you can use the Hyundai Kona EV for this assignment. Some pictures are attached for your reference.

Does your selected EV have on-board charging?
What is the rated AC input voltage of the on-board charger?
What is the DC output voltage of the on-board charger?
What is the Battery pack nominal voltage?
What type of motor is connected?
Is there an inverter needed in the drive unit?
Is there a high voltage DC-DC converter on-board the vehicle?
What type of cooling methodology is used? - Passive air, active air, active liquid?
Any other interesting observations you'd like to share?


Report and post your findings on the forum on the following subtopic.

Hello Friends ,

This With referring to Assignment #2 Identify the Sub Component of a real EV.
Here I have attached work , I did.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Abhilash on August 18, 2020, 06:52:59 AM
Assignment #2 - Identify the sub-components of a real EV
Electric Car Chosen : Chevrolet Bolt
1.   Does your selected EV have on-board charging?
Ans : Yes it has a on board charger.
2.   What is the rated AC input voltage of the on-board charger?
Ans : 120 or 240 v AC. The 240 v for 25miles/hr.
3.   What is the DC output voltage of the on-board charger?
Ans : 480 v DC (90miles/30mins).
4.   What is the Battery pack nominal voltage?
Ans : 350.04V
5.   What type of motor is connected?
Ans : Permanent Magnetic Drive Motor
6.   Is there an inverter needed in the drive unit?
Ans : Yes it is needed in the power train unit.
7.   Is there a high voltage DC-DC converter on-board the vehicle?
Ans : Yes
8.   What type of cooling methodology is used? – Passive air, active air, active liquid?
Ans : Active liquid cooling is used (Dex-Cool)
9.   Any other interesting observations you'd like to share?
Ans : It has DC Fast charging; One Pedal Driving and regenerative breaking for recapturing the kinetic energy and transferring back it to the batteries, efficient and fuel economical.

Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Abhilash on August 24, 2020, 12:22:43 AM
Assignment #2 - Identify the sub-components of a real EV
Electric Car Chosen : Chevrolet Bolt
1.   Does your selected EV have on-board charging?
Ans : Yes it has a on board charger.
2.   What is the rated AC input voltage of the on-board charger?
Ans : 120 or 240 v AC. The 240 v for 25miles/hr.
3.   What is the DC output voltage of the on-board charger?
Ans : 480 v DC (90miles/30mins).
4.   What is the Battery pack nominal voltage?
Ans : 350.04V
5.   What type of motor is connected?
Ans : Permanent Magnetic Drive Motor
6.   Is there an inverter needed in the drive unit?
Ans : Yes it is needed in the power train unit.
7.   Is there a high voltage DC-DC converter on-board the vehicle?
Ans : Yes
8.   What type of cooling methodology is used? – Passive air, active air, active liquid?
Ans : Active liquid cooling is used (Dex-Cool)
9.   Any other interesting observations you'd like to share?
Ans : It has DC Fast charging; One Pedal Driving and regenerative breaking for recapturing the kinetic energy and transferring back it to the batteries, efficient and fuel economical.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: chinmay.dighe.08 on September 11, 2020, 08:31:15 PM
Assignment #2 - Identify the sub-components of a real EV - Hyundai Kona EV 2019

1. Does your selected EV have on-board charging?
- Yes, it has on-board charging.

2.What is the rated AC input voltage of the on-board charger?
-  The Rated AC input voltage range is 70-205Vac.

3.What is the DC output voltage of the on-board charger?
- The DC Output Voltage range of on-board charger is 225 - 421Vdc.

4. What is the Battery pack nominal voltage?
-   356Vdc

5. What type of motor is connected?
-  Permanent Magnet Synchronous Motor (150kW) -

6. Is there an inverter needed in the drive unit?
-  Yes.

7. Is there a high voltage DC-DC converter on-board the vehicle?
-  No.

8. What type of cooling methodology is used? - Passive air, active air, active liquid?
-  The Vehicle uses Active Liquid Cooling.

9. Any other interesting observations you'd like to share?
-  The car acceleration is 0-100km in 7.60secs
- Range on full charge is close to 415km/ 257miles
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Ricah on September 15, 2020, 09:27:45 AM
Assignment #2 - Identify the sub-components of a real EV
use the Hyundai Kona EV for this assignment
Does your selected EV have on-board charging?
   yes
What is the rated AC input voltage of the on-board charger?
   120v to 240v
What is the DC output voltage of the on-board charger?
   400v
What is the Battery pack nominal voltage?
   352.4v (98 cells)
What type of motor is connected?
   pmsm (permanent magnet)
Is there an inverter needed in the drive unit?
   Yes, The inverter converts DC to AC to supply electricity to the motor
Is there a high voltage DC-DC converter on-board the vehicle?
   Yes, The EPCU includes an Inverter, LDC (Low Power. DC-DC Converter) and VCU in one housing.
What type of cooling methodology is used? - Passive air, active air, active liquid?
   active liquid, .. in KONA Electric enables higher battery efficiency and higher lifetime. It is water cooled ....
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: ayanadhikary on September 15, 2020, 09:35:44 AM
[Vehicle Model: Hundai Kona 64 kWh Battery pack
1.   Does your selected EV have on-board charging? Yes
2.   What is the rated AC input voltage of the on-board charger? Two option available – 120V and 240 V
3.   What is the DC output voltage of the on-board charger? 400 V
4.   What is the Battery pack nominal voltage? 356 V (Source: https://evcompare.io/cars/hyundai/hyundai_kona_electric_long-range_2018/)
5.   What type of motor is connected?  Permanent Magnet Synchronous Motor (PMSM)
6.   Is there an inverter needed in the drive unit? Yes, to run the PMSM
7.   Is there a high voltage DC-DC converter on-board the vehicle? Yes (Electric power control unit consist of a) invertor (to regulates current flow from battery to the PMSM, b) LDC – Low voltage DC-DC convertor, for step down supply voltage of 12 V and c) VCU – vehicle control unit.)
8.   What type of cooling methodology is used? - Passive air, active air, active liquid? Active liquid cooling is used.
9.   Any other interesting observations you'd like to share?  lithium-ion polymer battery pack. This provides lower memory sensitivity and excellent charge and discharge efficiency, along with outstanding maximum output.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Akshay on September 16, 2020, 11:23:20 PM
Great work, lots of Kona examples available from students to compare with. I'd also recommend working on this exercise with other types of e-vehicles like trucks, buses or even skateboards to get a sense of how things change with scale.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: AYUSH on November 18, 2020, 04:44:11 AM
1) Does your selected EV have on-board charging?
   Yes
2) What is the rated AC input voltage of the on-board charger?
   120V/240V
3) What is the DC output voltage of the on-board charger?
   230V for on-board DC fast charging
4) What is the Battery pack nominal voltage?
    356V
5) What type of motor is connected?
    Parmanent Magnet Synchronous Motor(PMSM)
6) Is there an inverter needed in the drive unit?
    Yes
7) Is there a high voltage DC-DC converter on-board the vehicle?
    Yes
8) What type of cooling methodology is used? - Passive air, active air, active liquid?
    Active Liquid cooling
9) Any other interesting observations you'd like to share?
   The Hyundai Kona Electric uses the CCS charging standard, which consists of a combined AC and DC input port. The upper part of the inlet is for the Type 2 connector. This connector is used when charging at home or at fast AC points and fast points. The lower section below the Type 2 input carries high power during fast DC charging from a CCS connector.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: AYUSH on November 18, 2020, 04:46:59 AM
1) Does your selected EV have on-board charging?
   Yes
2) What is the rated AC input voltage of the on-board charger?
   120V/240V
3) What is the DC output voltage of the on-board charger?
   230V for on-board DC fast charging
4) What is the Battery pack nominal voltage?
    356V
5) What type of motor is connected?
    Parmanent Magnet Synchronous Motor(PMSM)
6) Is there an inverter needed in the drive unit?
    Yes
7) Is there a high voltage DC-DC converter on-board the vehicle?
    Yes
8) What type of cooling methodology is used? - Passive air, active air, active liquid?
    Active Liquid cooling
9) Any other interesting observations you'd like to share?
   The Hyundai Kona Electric uses the CCS charging standard, which consists of a combined AC and DC input port. The upper part of the inlet is for the Type 2 connector. This connector is used when charging at home or at fast AC points and fast points. The lower section below the Type 2 input carries high power during fast DC charging from a CCS connector.
Title: Re: Assignment: Identify the sub-components of a real EV
Post by: Bhaskar on November 22, 2020, 08:56:12 PM
1) Does your selected EV have on-board charging?
   Yes, it has on-board Charging.
2) What is the rated AC input voltage of the on-board charger?
   AC input voltage of the on-board charger is 120V/240V.
3) What is the DC output voltage of the on-board charger?
   DC O/P Voltage of on-board charger is 230V for on-board DC fast charging.
4) What is the Battery pack nominal voltage?
   Battery pack nominal voltage is 356V.
5) What type of motor is connected?
    Motor connected to the vehicle is Permanent Magnet Synchronous Motor(PMSM).
6) Is there an inverter needed in the drive unit?
    Yes, there is an inverter in the drive unit.
7) Is there a high voltage DC-DC converter on-board the vehicle?
    Yes, there is DC-DC converter on-board the vehicle.
8) What type of cooling methodology is used? - Passive air, active air, active liquid?
    Cooling methodology used is Active Liquid cooling.