As the carrier of the battery module, the battery pack shell plays a key role in the safe operation and protection of the battery module. The structural strength and heat dissipation of the shell are important indicators to measure the working capacity of the battery. At present, the mainstream material of the battery shell is mica sheet. With the goal of 3060 carbon neutralization, the market has put forward higher requirements for the energy density, safety and cycle life of the battery. Reducing the weight of the battery shell structure and improving its strength and high temperature resistance is one of the important directions to improve the performance of the battery.
01 Good chemical stability
The alumina fiber composite has good acid and alkali resistance and other characteristics, which can adapt to different service environments and ensure the service life of the battery.
02 Good impact resistance
In case of vehicle collision, the high strength of alumina fiber composite can resist the strong impact of the outside world and avoid mechanical damage, deformation and loosening of fastening parts.
03 Good sealing performance
The physical and chemical properties of the alumina fiber composite are stable, and the designability is strong. When making the composite battery shell, the fireproof layer is added into the integrated molding, and the sealing performance is good. The thickness of the fireproof layer is<0.5mm, the mass of the fireproof layer is <0.5kg/m2, and the temperature resistance is ≤ 1800 ℃.
04 Lightweight
Under the premise of the same strength, the alumina fibre composite is lighter, which meets the development requirements of automobile lightweight and can greatly improve the endurance mileage of electric vehicles.
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