Electrical Equipment / Components & Telecoms

Hu Qichao, founder and CEO of SES, said a few days ago: "SES initially developed all-solid-state batteries, but has now abandoned the all-solid-state lithium metal technology route and chose the (solid-liquid) hybrid lithium metal route." , Weilan New Energy and other battery companies, another battery company has shifted its research and development focus from all-solid-state batteries to solid-liquid hybrid batteries that are better compatible with the existing liquid lithium-ion battery industry chain and manufacturing process.

It is understood that the current all-solid-state lithium battery has not completely solved the problems of solid-phase interface contact and volume expansion in the cycle. The material system, production process, and application technology are immature, and the supply chain has not yet been formed, and it has not been fully verified. Therefore, many battery companies that started with solid-state battery technology are second to none, positioning the previous generations of battery products as solid-liquid hybrid batteries.

"The conductivity of solid-state batteries has not reached the level of liquid batteries, so a compromise method is adopted, that is, solid-liquid mixed electrolytes, or semi-solid batteries. Most companies in the industry are developing solid-state batteries at this stage." Xu Xingwu, senior vice president of Guoxuan Hi-Tech, said.

u3000u3000 Xu Xiaoxiong, general manager of Zhejiang Fengli New Energy Technology Co., Ltd., believes that in the next few years, solid-liquid hybrid lithium batteries will be one of the main trends in vehicle power batteries. "(Mixed state) does not have a major subversion to the existing lithium-ion battery production line. The mixed solid-liquid is also suitable for the route of soft pack lamination, and the assembly has great compatibility with the current soft pack liquid, which may exceed 80 %, and the remaining 20% can be solved by transforming the production line. Large-scale, automated and efficient mass production can be achieved without major disruption. "The industry generally believes that all-solid-state batteries may be mass-produced after 2030.

u3000u3000 In addition, Cao Guangping, an independent researcher of new energy and intelligent connected vehicles, also believes that at present, relevant Japanese and American companies and institutions have not given up the research and development of all-solid-state batteries. Regardless of industrialization or forward-looking technological layout, completely abandoning any route may be risky. "Do not be too entangled in the industry inside and outside the'whether the battery is pure solid state.'