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

CTOnews.com December 8 news, according to Dongfeng Automobile release, Dongfeng Company has successively mastered solid-state battery battery, system and vehicle carrying applications and other development technology, and won the first solid-state battery model announcement (Ministry of Industry and Information Technology 351 batch of "Road Motor vehicle production Enterprise and Product announcement"). At present, Dongfeng Company is focusing on the second and third generation solid state batteries, as well as the development of independent ceramic core, laying out the whole value chain technology ecology of solid state batteries.

Since 2018, Dongfeng Company has set up a solid-state battery project team to carry out solid-state battery, solid-state battery system technology research. In July 2019, the first generation of solid-state battery system was developed. In June 2020, the vehicle of the first generation solid-state battery system was successfully developed. In January 2022, the high specific energy solid state battery was developed by Dongfeng Company and Ganfeng Lithium Industry, which was successfully carried in Dongfeng E70.

At present, Dongfeng Company has completed the development, trial production and operation of small batches of solid state battery vehicles. 50 Dongfeng Fengshen E70 equipped with solid-state batteries have been demonstrated in Zhejiang, Hebei, Jiangsu, Guangdong, Hunan and Jiangxi provinces with an operating mileage of more than 500000 km.

What is solid-state battery and what are the advantages of solid-state battery in terms of safety, mileage and cost compared with traditional lithium battery?

Traditional lithium-ion battery is generally composed of positive electrode, negative electrode, electrolyte and diaphragm. Solid-state battery uses solid-state electrolyte to replace the electrolyte and diaphragm of traditional lithium battery. And it has obvious advantages in high specific energy, high safety, long life and so on.

▲ high specific energy solid state battery system in terms of safety, Dongfeng first generation solid state battery vehicle uses high specific energy solid state battery, grasps the key of solid state battery safety design through special development technology, and successfully passes 167stringent tests, including single puncture, extrusion deformation, high temperature and so on.

At the same time, the solid-state battery manufacturing process is compatible with more than 80% of the liquid battery process, so although the performance is improved, it is comparable to the liquid battery of the same system in terms of industrial chain structure and cost. The application of solid-state battery in the whole vehicle can provide more cost-effective products, at the same time, greatly alleviate the mileage anxiety and safety anxiety of new energy vehicle owners.

CTOnews.com learned that the second-generation solid-state battery being developed by Dongfeng Company has the characteristics of higher energy density on the basis of high safety. "it is expected to be carried in mass production in the first half of 2024, when the vehicle mileage can reach more than 1000 kilometers."

At present, Dongfeng is building the original technology source of Dongfeng solid-state battery through the research and development of key core materials of solid-state battery, the formulation and process design of solid-state battery, the product development of high specific energy solid-state battery, and the construction of solid-state battery intelligent chemical plant.

▲ 350 solid state battery cell

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