There are a variety of uses for grid-level battery storage as it prevents fluctuations and stops the requirement of “peaker” plants, and also allows a small amount of backup power. There is also a constant 60 Hz frequency. Kokam is developing the largest lithium NMC battery.
A traditional generator pushes up output to counteract any dips in frequency. However, there are problems. Firstly, there is a slow response; sometimes there is overcompensation, and lastly, there is a waste of fuel. The answer seems to be energy storage systems, and here there will be a quicker response, savings on fuel use and frequency control.
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The South Korea Electric Power Corporation is involved and is convinced that savings will end up being three times the price paid, as well as less damage to the generator. Ike Hong of Kokam’s Power Solutions Division proclaims that as well as power density, there is also a strong performance provided. Improvements provided by using the ultra-high power NMC include treatment to the surface that lengthens the life of the battery, a design that cuts back on internal resistance meaning less energy is lost. Finally, there is not a prismatic structure but a pouch-type cell structure.
There is a unique cooling system that affects only the temperature of the rack instead of the whole container. Storage is usually the issue when it comes to things such as electric vehicles, and there should be a drop in price and performance improvement. As a result, industry and consumers win.
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