BYD announced plans to commence demonstration use of all-solid-state batteries by 2027, according to Sun Huajun, the company’s Chief Technology Officer for its battery business, during a recent forum. While BYD anticipates starting these demonstrations in 2027, the widespread adoption of all-solid-state batteries is expected to occur after 2030.
Sun highlighted that the battery industry is experiencing similar advancements across different companies. In 2024, BYD achieved a power battery installed capacity of 153.7 GWh, representing a 17.2 percent share of the global market. This places BYD behind Contemporary Amperex Technology Co., Limited (CATL), which holds a 37.9 percent market share.
CATL has also expressed intentions to produce all-solid-state batteries in small volumes by 2027. However, the company acknowledged that scaling up production to high volumes remains challenging, particularly due to cost concerns. Liquid lithium batteries currently achieve an energy density of approximately 350 Wh/kg, whereas all-solid-state batteries are projected to reach up to 500 Wh/kg, offering significant efficiency improvements.
BYD began its research and development efforts on all-solid-state batteries in 2013, initially focusing on exploring various technology routes and materials. By 2016, the company advanced to verifying the technical feasibility of the technology, leading to the development of prototypes. In 2023, BYD started validating the industrial feasibility of these batteries. The company expects to produce trial products with capacities of 20 Ah and 60 Ah in 2024, marking a significant step towards commercialization.
Sun emphasized that cost considerations for all-solid-state batteries are expected to become less of an issue over time. Although the cost of sulfide electrolytes remains high due to limited production volumes, Sun noted that achieving larger-scale production will theoretically reduce costs, making solid-state ternary batteries comparable in price to their liquid counterparts.
BYD’s commitment to advancing all-solid-state battery technology reflects the broader industry trend towards higher energy density and improved performance in battery systems. The company’s ongoing efforts aim to overcome current challenges and pave the way for the future of energy storage in electric vehicles and other applications.
Source: CnevPost
