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Category

Batteries
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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The Alkaline battery gets its name because it has an alkaline electrolyte of potassium hydroxide, instead of the acidic ammonium chloride or zinc chloride electrolyte of zinc-carbon batteries. Above, you see pictures of two types of cells that Panasonic makes. The ones on the top are AA type Alkaline cells. The ones on the bottom are AA type Zinc Carbon cells. Alkaline...
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A cell is an Electro-chemical reaction which is housed in a mechanical structure. Usually, the commonly available cells you find, like alkaline cells are called by their mechanical structure – AA, AAA, D size batteries are found in most stores today. Sometimes, they are referred to by their nominal voltage, for example you go to the store and say...
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If you’ve taken the Battery Masterclass, you know that the electrode material which includes the binder and the active material are mixed into a slurry before they are applied evenly on the current collector to form an electrode.  Courtesy of LG Chem The process of manufacturing electrodes needs energy, water and a lot of floor...
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With the recent news of Audi E-tron recalls due to battery pack leakages, the following information on isolation is important to understand and consider. The article talks about moisture leak into the battery pack, so the first question to ask is why does increased moisture in the pack lead to issues? Here are a few...
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It is definitely the right time to be deeply involved in battery technology, as it moves to the forefront of many industries including automobiles, stationary storage, aerospace, telecom, and consumer electronics. As battery technology advances, it is also causing an increase in the competition in the market and you’ll need a plan to set yourself apart.  In this video, Akshay talks about how battery technology...
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Decoupling capacitors are commonly found in circuits and can cause unintended issues if the design is not thought through fully. Let’s first understand what decoupling capacitors are. There are usually 0.1uF, and sometimes 2.2nF capacitors that are placed between the supply rails and ground to help prevent the transmission of noise through the power lines in...
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I teach an online course on battery management and was looking for an inexpensive off-the-shelf product to see what could be learned from it. Here’s one that I found on Ebay that claims to be a BMS for up to four series cells. Why should you spend the next 5 minutes reading this article? You’ll takeaway two...
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The concept of Kelvin sensing is explained below and why it is useful in battery voltage sensing. A current carrying conductor drops voltage across it, and in battery packs this current can be really high at times, which means that the voltage dropped will also be higher. The voltage sensing circuitry is usually far away...
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