Addressing the surge in summer NEV fire incidents, CATL, in collaboration with materials firms, has developed a high-temperature resistant liquid silicone rubber (LSR) sealing system. This material maintains elasticity at 200°C (392°F), effectively sealing battery modules against moisture ingress and preventing thermal runaway. Tests show battery packs with the new seals exhibited leakage rates as low as 0.01% after 50°C (122°F) high-temperature cycling. The technology is now deployed in vehicles from BYD, NIO, and other brands, helping electric vehicles weather the summer safely.
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