LR41 battery.Power lithium batteries: innovation capabilities and safety research are shortcomings

　　■Accelerating industrialization process

　　"In March 2017, the Ministry of Industry and Information Technology, the National Development and Reform Commission, the Ministry of Science and Technology, and the Ministry of Finance jointly announced the "Action Methods to Promote the Development of the Automotive Power Lithium-ion Battery Industry" to accelerate the development level of my country's automotive power lithium-ion battery industry." In 2018, my country's electric vehicles At the Forum of the 100-person Conference, Miao Wei, Minister of Industry and Information Technology, introduced that the new energy vehicle industry will give full play to the National Power Lithium-ion Battery Innovation Center and the Industrial Innovation Alliance to build a national cross-industry collaborative innovation platform for new energy vehicles and develop next-generation lithium-ion batteries. and collaborative research on new system batteries.

　　Charging temperature: -20~45℃ -Discharge temperature: -40~+55℃ -40℃ Support maximum discharge rate: 3C -40℃ 3C discharge capacity retention rate ≥70%

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　　Ouyang Minggao, an academician of the Chinese Academy of Sciences, particularly emphasized that with the expansion of the production and sales of new energy vehicles, lithium-ion power lithium-ion batteries are expected to achieve the goal of 300 Wh/kg by 2020. The current domestic and foreign technology research and development processes are basically at the same level.

　　■Innovation capabilities and safety research are shortcomings

　　Although the gap between my country's high-end power lithium-ion battery products and foreign countries is not big, the industry's overall innovation capability is not strong yet. Compared with multinational companies, there are still considerable gaps in advanced technology research and development, product consistency guarantee, and international development. difference. In addition, Ouyang Minggao specifically pointed out that safety research in my country's power lithium-ion battery industry needs to be strengthened.

　　It is understood that from the perspective of complete vehicles, most of the pure electric vehicles on sale in my country are modified based on the original fuel vehicle platform, and most of the true new generation pure electric drive platforms have not yet been included in the company's research and development plans. In addition, the gap between fuel-powered lithium battery vehicles and the international advanced level is still widening. The innovation system with the company as the main body and the combination of industry, academia, research and application still needs to be improved urgently.

　　Facing the future, improving the comprehensive performance of power lithium-ion batteries is an important challenge for technological innovation and is also the direction of future technological innovation. Wan Gang said: "Our requirements for power lithium-ion batteries will be higher density and safety, and the requirement for fuel-powered lithium batteries will be higher power density."

　　Low temperature and high energy density 18650 3350mAh-40℃ 0.5C discharge capacity ≥60%

　　Charging temperature: 0~45℃ Discharge temperature: -40~+55℃ Specific energy: 240Wh/kg -40℃ Discharge capacity retention rate: 0.5C Discharge capacity ≥ 60%