China's automotive body industry
2026-03-16 19:29:02
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The integration of China's automotive body industry and energy storage industry
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The integration of China's automotive body industry and energy storage industry is moving from 'battery installation' to 'structural symbiosis', with the core path of CTB/CTC integrated design and lightweight energy density co evolution. BYD CTB technology directly uses blade batteries as body structural components, eliminates independent battery packs, increases the torsional stiffness of the entire vehicle by 70%, extends the range by more than 10%, and achieves structural safety of batteries as energy absorbers during collisions; Tesla and Zero Run's CTC solution further integrates battery cells into the chassis, increasing space utilization by 15% and reducing vehicle weight by 10% -16%. By 2025, the weight proportion of mainstream pure electric vehicle batteries has reached 30% -35%, with medium and large vehicles breaking through 40%, promoting the accelerated upgrading of body materials to high-strength steel, aluminum alloy, and carbon fiber composite materials. The mandatory national standard GB 38031-2025, which will be implemented in July 2026, specifies the safety thresholds for batteries under extreme working conditions such as compression, thermal diffusion, and immersion, forcing the integrated safety design of the vehicle body energy storage system. Solid state battery technology is accelerating the reconstruction and integration of logic, and its inherent safety and energy density of over 400Wh/kg will promote the elimination of traditional protective layers in vehicle bodies and achieve 'shell free' integration. The industry is shifting from 'battery loading' to 'vehicle body as battery', with China leading the global development of technical standards, achieving a leap from following to defining.
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shanghai caite international trade co.,ltd
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