Shulou(Shulou.com)11/24 Report--

CTOnews.com, April 2 (Xinhua) according to the Shanghai Securities News, Sun Shigang, academician of the Chinese Academy of Sciences, said at the sub-forum of the China Electric vehicle Association Forum: "our country should make efforts in strengthening basic research, so that we can solve the problem of scientific and technological self-reliance from the source, and hope to lead the development of a new generation of batteries."

Sun Shigang said that the existing lithium-ion batteries are facing four major challenges: first, lithium and other resources seriously limit their large-scale energy storage applications. At present, 70% of lithium in China depends on imports, and there is an urgent need to develop a new material system; second, the energy density is close to the theoretical limit, and lithium-ion batteries are far from meeting the major needs of development, which limits the application of multiple scenarios; third, safety accidents occur frequently. In 2021, there were about 3000 fires in new energy vehicles in China, and the fire accident rate of new energy vehicles was 0.90-1.2 per 10,000 vehicles. Fourth, the adaptability of extreme environment is insufficient, especially in the extreme environment such as underwater deep-sea exploration and lift-off exploration, better adaptability is needed.

Zhu Gongshan, founder and chairman of Tuyuan Pexels Xiexin Group, said that the energy storage properties of electric vehicles have not yet been excavated and realized. Through V2G technology and orderly charging technology, electric vehicles can completely become controllable distributed energy storage, charge in the low cost of electricity, non-peak hours of power consumption, and sell the power back to the power grid in the peak period to achieve the most inclusive economic value.

By 2030, China's production of electric vehicles will exceed 15 million, the number of new cars will exceed 100 million, and the degree of self-driving of new cars at different levels will reach 70%. "once a large number of electric vehicles become mobile energy storage, it will play a huge balancing role in peak regulation of the power grid," he pointed out. "

According to the latest data from SNE Research, in the first two months of this year, the number of newly installed electric vehicle batteries in the world was about 75.2 GWh, an increase of 39% compared with the same period last year. Ningde Times is the largest manufacturer of electric vehicle batteries, with 25.5 GWh newly installed in two months, up 34% from the same period last year, accounting for 33.9%.

It is worth mentioning that Fan Wenguang, vice president of Shenzhen Bic Power Battery, said at the China Electric vehicle Association that Bick Power will begin mass production next year, with an energy density above 280Wh/kg and supporting 4C fast charging. In addition, Bick Power Battery plans to launch quasi-solid-state products with higher energy density than 330Wh/kg within three years.

According to previous reports from CTOnews.com, Bick Power Battery was the first to release 4680 cylindrical batteries, which was even faster than Tesla. According to the message, 4680 of the Bick battery is currently rated as 25Ah, far exceeding the 3Ah of the 18650 battery. On this basis, in the past, the battery pack composed of 8000 batteries now needs only 1000 batteries, which reduces the requirement for BMS to some extent.

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