The battery has energy densities of 240Wh/kg and 350Wh/kg, achieving a maximum driving range exceeding 1,000 km.
Dongfeng Motor announced on October 20 that it has established an independent and fully controlled solid-state battery supply chain, achieving breakthroughs in key technologies such as electrolytes, separators, and in-situ solidification.
The company has developed two solid-state battery products with energy densities of 240Wh/kg and 350Wh/kg, achieving a maximum driving range exceeding 1,000 km.
The new batteries deliver both high energy density and exceptional safety performance. They have passed the mandatory GB38031-2020 safety tests and withstood extreme conditions such as puncture, 50% compression deformation, and exposure to 150°C heat chambers.
Dongfeng began its solid-state battery R&D in 2018, forming a dedicated project team to study cell and system technologies. By July 2019, the company had completed development of its first-generation solid-state battery system, followed by its first prototype vehicle in June 2020.
In January 2022, Dongfeng partnered with a leading battery manufacturer to co-develop a high-energy-density solid-state battery, which was successfully installed in the Dongfeng E70 sedan. The first batch of 50 demonstration vehicles has since been operating across six provinces and ten cities, accumulating over 1.5 million km.
At the 2024 World Power Battery Conference, Dongfeng unveiled its new-generation solid-state battery system with a 285Wh/kg energy density.
The system adopts a cell-to-pack (CTP) structure to optimize space utilization and reduce costs, while incorporating immersive liquid cooling and a wireless BMS for enhanced efficiency and reliability.
Solid-state batteries are widely regarded as a key competitive frontier for next-generation electric vehicles. According to ChinaEV Home‘s recent report, Chinese research teams recently overcame a critical technical bottleneck in all-solid-state lithium-metal battery development, doubling driving range from around 500 km to over 1,000 km.
Meanwhile, Chery has also made major strides in this field in recent days, unveiling its “Rhino S” all-solid-state battery module featuring 240Wh/kg cell density and a range of 1,200–1,300 km. The company plans to complete on-vehicle validation by 2027.
Besides Dongfeng and Chery, automakers including SAIC, Changan, GAC, BMW, and Mercedes-Benz have announced solid-state battery deployment schedules, mostly within the next three years.
As technology paths mature and industrial supply chains accelerate, the mass production and commercialization of solid-state batteries are becoming the next key battleground in the EV industry.
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