How does the chassis of a new energy vehicle support the battery’s weight?

 　　How does the chassis of a new energy vehicle support the weight of the battery? The design of the chassis to support the weight of the battery in new energy vehicles is the result of structural innovation, material upgrades, and intelligent protection working together. Weight poses a significant challenge to the chassis, but modern technology has achieved efficient support through multi-dimensional optimisation.

　　The current mainstream solution includes an integrated design of the battery and chassis, embedding the battery pack directly into the chassis frame to form a ‘battery as chassis’ structure. The chassis layout adopts a central low-position design, placing the battery pack between the front and rear axles and close to the ground. This lowers the centre of gravity to enhance handling stability while distributing the load to prevent local stress concentration.

　　The synergistic application of lightweight and high-strength materials is key to the chassis’ ability to support battery weight. Aluminium alloy, with its low density and strong corrosion resistance, is widely used in critical chassis components such as crossbeams and longitudinal beams, reducing weight while maintaining structural strength. Carbon fibre composite materials further push performance limits, enabling their use in battery casings or chassis reinforcement plates to effectively absorb energy and protect the battery during collisions.

　　The precise application of high-strength steel is also critical, such as using hot-forming in areas of concentrated stress on the chassis. The construction of an intelligent protection system provides safety redundancy for the chassis to bear the battery’s weight. Chassis guards serve as the first line of defence, made of high-strength metal or composite materials, covering the bottom of the battery pack to withstand physical damage such as stone impacts and scratches.

　　The internal structure of the battery pack is also meticulously designed, with multiple battery cells fixed by a frame and filled with cushioning materials. Even if the chassis is subjected to impact, the force is dispersed across the entire structure, preventing damage to individual cells. The intelligent monitoring system continuously tracks the battery’s status. Upon detecting any abnormalities, it immediately triggers an alert and limits power output to prevent battery thermal runaway risks caused by chassis deformation.

　　How does the chassis of a new energy vehicle support the battery’s weight? The synergistic evolution between the chassis and battery continues. As battery energy density further increases, the battery’s weight is expected to decrease under the same range requirements, thereby reducing the chassis load.


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