Reuse of EV lithium-ion battery, although the capacity is still reduced for fixed use value - News - Global IC Trade Starts Here Free

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Automakers are not satisfied with the current performance of lithium-ion batteries. Toshiba Electric Power Distribution Systems, the chief engineer of the rechargeable battery system, said this. The performance of HEVs and EVs that are expected to become popular in the future depends to a large extent on battery performance, so the development competition for lithium batteries for automobiles is becoming increasingly fierce. In this competition, it is Toshiba's new rechargeable battery SCiB. The author interviewed Bento on Toshiba's lithium-ion battery development strategy. (Interviewer: Bai Shi Taiji = TechnoAssociates)

(Continued: "As a battery for HEV and EV, SCiB will become a powerful choice for auto manufacturers" (Part 1)

Q: It is said that SCiB can withstand low temperatures. Please tell us about this.

A: I would like to introduce the low temperature performance of SCiB from the aspects of output and input. First, in terms of output, the discharge capacity of SCiB at low temperatures is less deteriorated. When the ambient temperature drops to around -10 °C, the discharge capacity of an ordinary lithium-ion battery will drop significantly, while the SCiB can remain above 95%.

Secondly, the input side, the ordinary lithium-ion battery will damage the battery when it is quickly charged at low temperature. Even if the SCiB is repeatedly charged at a low temperature, it will not damage the battery and will not lose the performance of the battery.

The low temperature characteristics of SCiB batteries are important for HEVs and EVs. Since the HEV or EV equipped with a normal lithium ion battery is driven in a cold area, the discharge capacity is drastically reduced, and in order to protect the battery from damage, the regeneration function is restricted.

The fast charging system for recycling lithium-ion rechargeable batteries for vehicles consists of solar cells, power conditioners and fast chargers. Recycled lithium-ion rechargeable batteries are equipped on the power conditioner.