BYD announced the development and introduction of all-solid-state batteries

B BYD announced its plans to develop and introduce solid-state batteries. The chief technology officer of BYD’s battery business unit, Sun Huajun, said at a recent forum that the company expects to begin “demonstration use” of solid-state batteries around 2027.

Sun Huajun said that the company expects to begin “demonstration use” of solid-state batteries around 2027.

Solid-state batteries for electric vehicles: the future after 2030

.

This milestone will be an important step towards widespread adoption of this advanced technology in electric vehicles. Although demonstration use is expected in a few years, Sun noted that real mass use of solid-state batteries may not begin until after 2030.

Sun noted that the real mass use of solid-state batteries may not begin until after 2030.

Industry Trends and Competition

BYD’s progress is in line with general industry trends. Other major players such as CATL are also actively developing solid-state battery technologies, with similar timelines for limited production and wider adoption.

History of BYD’s research into solid-state batteries

Solid-state battery research began at BYD back in 2013. At first, the company focused on exploring different technologies and materials. By 2016, BYD began to test the technical feasibility of these batteries by producing small prototypes with limited capacity. Over the past few years, the company has continued to make progress, and in 2024, trial products of solid-state batteries with capacities of 20 Ah and 60 Ah have been developed.

Solid-state batteries with capacities of 20 Ah and 60 Ah have been developed.

Benefits and challenges of solid state batteries

Solid state batteries have tremendous potential to increase energy density. Liquid lithium batteries are already approaching the theoretical limit of 350Wh/kg, but solid state batteries promise to reach an impressive 500Wh/kg.

Solid state batteries have the potential to increase energy density.

Materials and costs of solid-state batteries

.

BYD chose sulfide electrolytes for its solid-state batteries primarily based on cost and manufacturing process stability considerations. Other companies are exploring different chemistries, such as oxides and polymers, for their own developments.

BYD is also exploring different chemistries, such as oxides and polymers, for their own designs.

Cost remains an important factor for widespread adoption of solid-state batteries. At the moment, sulfide electrolytes are expensive due to low production volume. BYD is confident that as production scale increases, the cost of solid state ternary batteries will eventually become comparable to that of liquid ternary batteries.

The story BYD announces development and introduction of all-solid-state batteries was first published on ITZine.ru.