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Share with friends and circle of friends with wechat scan QR code < / P > < p > < p > surging journalist Chen lingyao < / P > < p > < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E8%94%9A%E6%9D%A5 "> Weilai < / a > auto (NiO) released < a target ="_ blank" href=" https://news.163.com/news/search?keyword=%E7%94%B5%E6%B1%A0 "> after the battery < / a > solution attracted the attention of the industry, there was market news that Ningde Times New Energy Technology Co., Ltd. (hereinafter referred to as" Ningde times ", 300750), the leader of domestic power battery, might be its solid-state battery supplier. < p > < p > on January 11, the news was surging（ www.thepaper.cn ）The reporter asked Ningde times for confirmation, but the other party did not directly confirm the news, saying that "the company's high-intensity R & D investment and technical reserves, as well as mass production and manufacturing capacity, can support the continuous leading of product competitiveness.". < / P > < p > according to the introduction, the solid-liquid electrolyte of in-situ curing process is used in the solid-state battery pack to ensure the cell safety, and the silicon carbon of inorganic pre lithium process is used_ blank" href=" https://news.163.com/news/search?keyword=%E8%B4%9F%E6%9E%81 "> negative electrode < / a >, combined with nano coating process of ultra-high nickel positive electrode, can achieve 50% energy density increase, reaching 360wh / kg energy density. < / P > < p > it is worth noting that with 150kwh solid-state battery pack products, the NEDC endurance of the whole series of Weilai vehicles will be greatly improved. Compared with the 100kwh high-capacity battery pack launched by Weilai in November last year, the endurance of Weilai 2018 es8 will be increased from 500km to 730km, the endurance of new es8 will be increased from 580km to 850km, and the endurance of ES6 will be increased from 600km to 900km. < / P > < p > solid state battery is a kind of battery using solid electrode and solid electrolyte. It is considered to be the main technology route of the next generation power battery, and also the key research direction of many battery manufacturers and automobile enterprises. < / P > < p > compared with traditional lithium-ion batteries, solid-state batteries have many advantages, such as higher energy density, better safety, smaller size and so on. However, in order to achieve mass production of all solid-state batteries, some technical obstacles need to be overcome, such as cell fire caused by lithium dendrite growth on the surface of lithium metal. It is generally believed that the full industrialization of solid-state batteries will take 5-10 years. < / P > < p > however, Weilai is not releasing all solid state batteries this time. According to China Securities News, Zeng Shizhe, assistant vice president of Weilai automotive battery system, said that although it is described as a solid-state battery, the battery is actually a semi-solid battery and still needs to use < a target = "_ blank" href=" https://news.163.com/news/search?keyword=%E7%94%B5%E8%A7%A3%E6%B6%B2 "> electrolyte < / a >, diaphragm. Li Bin, founder and CEO of Weilai, also said that mass production of all solid state batteries is still a long way off, because the current market demand for solid state batteries is very low. < / P > < p > for solid-state battery suppliers, Li Bin said in an interview that it was not convenient to disclose. However, it mentioned that Weilai automobile has a very close cooperation relationship with solid-state battery suppliers and is definitely the leading company in the industry. < / P > < p > in China, Ningde times, GuoXuan high tech, honeycomb power, Ganfeng lithium, Tianqi lithium and other lithium enterprises, as well as BYD, Weilai, BAIC group, Great Wall Motors and other automobile enterprises have participated in the solid-state battery research. < / P > < p > < p > Ningde times was founded in 2011, and its business covers R & D, production and sales of new energy vehicle power battery system and energy storage system. In terms of research and development progress of solid-state batteries, the company recently said on the interactive platform that it will continue to invest in cutting-edge research and product research and development of solid-state batteries and other cutting-edge technologies, pay close attention to market demand and development of cutting-edge technologies, continue to break through technical barriers with R & D, drive innovation to lead, and realize commercialization of new technologies with multi echelon and multi-path, so as to improve the comprehensive competitiveness of products power. < p > < p > The Research Report of Everbright Securities shows that the mass production of all solid-state battery still needs time, and semi-solid battery has become the intermediate product of the transition from liquid battery to all solid battery. During the iteration process of solid-state battery, the content of liquid electrolyte will decrease from 20wt% to 0wt%, and the lithium content of negative electrode will gradually increase until it is replaced by metal lithium. The semi-solid battery will still use separator and liquid electrolyte. Compared with liquid battery, the battery material system has little change, and the mass production time is earlier than all solid battery. The agency believes that the impact of semi-solid batteries on the industry is limited.

2023-03-22 10:04:25