According to CnEVPost, BYD has officially confirmed its plan to roll out the first all-solid-state battery-powered electric vehicles (EVs) in 2027. Despite having made significant breakthroughs in this field, large-scale commercial adoption is still a few years away. At the 2nd China All-Solid-State Battery Development Summit, Sun Huajun, CTO of BYD’s battery division, shared the company’s latest timeline.
Timeline for Mass Production of All-Solid-State Batteries
According to Sun Huajun, BYD projects:
- 2027-2029: The demonstration phase, with limited production of EVs using all-solid-state batteries.
- 2030: Large-scale adoption and mass production of all-solid-state batteries.
- Initial Use: High-end models, such as Denza and Yangwang, will be the first to feature sulfide-based all-solid-state batteries.
Sulfide electrolytes offer superior stability, longevity, and faster charging compared to traditional liquid electrolytes. In 2023, BYD successfully verified the feasibility of mass production and tested 20Ah and 60Ah solid-state battery cells.
Global Competition: A Race for All-Solid-State Battery Dominance
BYD is not alone in this race. Several key industry players are also advancing their all-solid-state battery technology:
- CATL aims to begin small-scale production in 2027, having already entered the 20Ah sample production phase.
- Honda unveiled its new solid-state battery demonstration line in November 2024.
- Mercedes-Benz, Toyota, Nissan, and Stellantis are also heavily investing in this next-generation battery technology.
Advantages and Challenges of All-Solid-State Batteries
All-solid-state batteries are considered the ultimate breakthrough in battery technology, offering numerous advantages:
- Higher energy density: Targeted at 500 Wh/kg, compared to 350 Wh/kg for liquid lithium-ion batteries.
- Faster charging speeds: Improving overall EV efficiency.
- Enhanced safety: Lower risk of thermal runaway.
Despite these benefits, several challenges remain before mass adoption can occur:
- High production costs: Limited production capacity keeps costs elevated.
- Complex manufacturing processes: Solid-state electrolytes require advanced fabrication techniques.
- Supply chain limitations: The reliance on nickel and cobalt continues to impact pricing and availability.
BYD’s Research and Development Milestones
BYD began its research on all-solid-state batteries in 2013:
- 2016: Verified technical feasibility, developing small-capacity soft-pack battery prototypes (<1Ah).
- 2023: Validated industrial-scale production feasibility for solid-state batteries.
- 2024: Successfully produced 20Ah and 60Ah solid-state battery prototypes.
Sun Huajun emphasized that cost will not be a long-term obstacle. As production scales up, the cost of sulfide electrolytes is expected to decrease, making all-solid-state batteries price-competitive with liquid lithium-ion batteries.
Future Outlook
With its leading position in the EV market, BYD is set to play a crucial role in the future of all-solid-state battery technology. As the 2027 demonstration phase and 2030 mass production plans unfold, these batteries could revolutionize the EV industry. However, major challenges such as cost, production scalability, and supply chain constraints must be addressed before mass-market adoption becomes a reality. Over the next few years, BYD, CATL, Hyundai, Honda, Toyota, and other key players will determine the speed at which all-solid-state batteries become mainstream.
Want to stay updated on the battery industry? Check out the latest news on BatteriesDaily!
