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Category

Batteries
Tabless architecture cells The new cell will be 46mm in diameter and 80mm in heightLaser padded the existing foils to enable dozens of connections into the active materialElectron has to travel less distanceBetter power to weight ratioTabs slow down rate of production5x energy, 16% range increase, 6x power [AG comments]-> A problem with larger diameter...
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Range estimation is an important parameter for putting an Electric Vehicle on the road. Certification tests require disclosure of estimated range at different conditions, and more importantly users of the vehicle make daily decisions about their driving based on the amount of range left as calculated by the vehicle itself.A lot of parameters can be...
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Although batteries have chemical energy enclosed in a mechanical housing, we monitor them electrically while they are in use. The discharge characteristics are an important parameter to be monitored while energy is being taken from the battery. Image credit – LG Chem Above is a graph of what discharging profiles for a Lithium-ion cells looks...
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Hanwha Corp, based out of South Korea said in a press release today stating that it would be supplying formation equipment to the Tesla Gigafactories in Fremont, California, and at later stages in the Gigafactories located in Germany and China as well. We’ve talked in detail about the Formation process in the Battery Masterclass course...
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During the initial design stage, we were looking at multiple options for sensing current that would flow in and out of the battery pack. As many of you know, there are mainly two approaches to sense current, these are can be classified as: Invasive – Sensing currents using shunt resistors or similarNon-Invasive – Sensing using...
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When you hear about Lithium-ion battery safety, Thermal runaway is a very commonly talked about term. The purpose of this article and the attached video is to explain Thermal runaway in an intuitive way, so that the fear around it is a little less and the understanding a little more. As the name suggests, thermal...
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In 2013, a Lithium-ion battery fire was discovered on a parked JAL airlines plane. After this, at-least 2 more planes which had similar failures which led to the grounding of the Boeing 787 Dreamliner until this issue was resolved. Boeing 787 Dreamliner Battery Failure Reports – Image credit – CNN Boeing had contracted out the...
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We were looking for a 3V to 7-8V DCDC Boost converter module recently and had a particularly hard time finding a suitable candidate. The current requirements were 0.6A continuous and 2.5A peak. Here are few of the options we considered. Option 1 – XL6009 Module Option 2 – LM2577 Module Option 3 – LM2587 Module...
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These were the rendition of Opportunity’s last words, the NASA rover that was decommissioned in June of 2018. With it’s mission planned for 90 Earth days, it lasted for 15 Earth years largely due to the success of the Battery Technology on-board. Before the Mars Exploration Rovers (MER) Spirit and Opportunity in 2003, the Sojourner...
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It has long been known that Nickel-Cadmium and older versions of Nickel–Metal Hydride rechargeable cells show the memory effect, but there is uncertainty of its existence in Lithium based cells. Memory Effect or Voltage Depression was first observed in a Nickel-Cadmium battery which was being used in a satellite. Some of these were the Explorer...
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