Next-generation solid-state battery pack by BASF and Welion unveiled
At Guangzhou International Automobile Exhibition, a next-generation solid-state battery pack co-developed by Welion New Energy Technology and BASF, which contribute to vehicle weight reduction, thermal management, and enhanced safety performance in electric vehicles (EVs), was unveiled.
The next-generation solid-state battery pack co-developed by Welion New Energy Technology and BASF.
The battery pack incorporates innovative material solutions from BASF, including engineering plastics Ultramid and Ultradur and polyurethanes Elastolit, Elastoflex, Elastan, and Eastocoat.
BASF’s advanced materials elevate battery safety and performance. The flame-retardant cell holder delivers exceptional electrical insulation and meets stringent standards. Fire-resistant compounds in extruded high-voltage busbars ensure superior metal adhesion and flow versus polyamide 12 (PA12). Elastolit foaming potting adhesive and Elastocoat fire-protection coatings further reinforce thermal runaway resistance.
When combined, BASF’s material solutions safeguard against thermal runaway, mechanical impact, overcharging, and short-circuit risks, engineered under China national GB 38031 standard, and aligning with global battery standards.
“By eliminating the hazards of flammable liquid electrolytes, the solid-state design delivers exceptional thermal stability. It also tackles key challenges in charging speed and driving range - accelerating the mainstream adoption of solid-state batteries and bringing consumers safer, smarter, and more reliable electric vehicles,” explained Huigen Yu, Chairman, Welion.
Additionally, BASF’s solutions contribute to vehicle weight reduction, which is critical for maximizing EV efficiency.
BASF's Ultramid PA side cooling manifold and Elastoflex PU Stray Transfer Molding (STM) battery cover cut weight by about 50% compared to metal alternatives. Elastan low-density structural adhesive optimizes structural integrity, meeting the dual demands of safety and lightweighting. Additional polyurethane structural filling and polyurea coatings further increase battery impact strength.
“We constantly advance our portfolio with our material innovation expertise to meet dynamic regulatory demands and support our customers and automotive OEMs in their green transformation,” said Andy Postlethwaite, Senior Vice President, Performance Materials Asia Pacific at BASF.
