BYD plans to commence batch demonstration and vehicle application of all-solid-state batteries in 2027, with large-scale application expected before 2030.
Recently, at the 2025 Japan Mobility Show, Li Yunfei, General Manager of BYD Group’s Brand and Public Relations Department, for the first time commented on BYD’s layout in the field of solid-state batteries during a media interview.
Li Yunfei stated: “Regarding various battery technology routes, as a global company that both manufactures complete vehicles and produces batteries on such a large scale, we at BYD certainly conduct research and design for all of them. If others have it, we will have it too; if others are good, we might even be better. We hope everyone will have confidence in BYD and in China’s entire battery industry.”
Regarding this technical route, Sun Huajun, CTO of BYD Lithium Battery, previously revealed that sulfide-based solid-state batteries are considered one of BYD’s key development directions. He pointed out that sulfide-based solid-state batteries will achieve breakthroughs in areas such as battery lifespan and fast charging.
Meanwhile, Lian Yubo, BYD’s Chief Scientist, Chief Automotive Engineer, and Dean of the Automotive Engineering Research Institute, has also disclosed that BYD has conducted in-depth research in the field of solid-state batteries.
Regarding the widespread application of solid-state batteries, Lian Yubo estimates that “three years is quite difficult, five years is more realistic.” This judgment provides a clear technical development expectation for the industry.
The roadmap for the future commercialization of BYD’s solid-state batteries is gradually becoming clearer.
Sun Huajun publicly stated that BYD plans to start the batch demonstration and vehicle application of all-solid-state batteries in 2027 and achieve large-scale application before 2030.
Specifically regarding the phased technical development plan, Sun Huajun further elaborated that the period from 2027 to 2029 will be the demonstration phase for sulfide-based solid-state batteries, mainly targeting mid-to-high-end electric vehicles.
From 2030 to 2032, sulfide-based solid-state batteries will enter an expansion phase, gradually being applied to the mainstream electric vehicle market.
In terms of industrialization progress, BYD has achieved substantial breakthroughs.
In 2024, BYD completed the pilot-scale production of 60Ah all-solid-state batteries, marking the company’s capability to transition all-solid-state battery technology from the laboratory to mass production. This also lays the technical foundation for achieving demonstration vehicle application in 2027.
As 2025 approaches its end, competition in the field of solid-state batteries is intensifying. BYD’s statement this time also indicates that the technical competition in the new energy vehicle sector will enter a new stage.
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