3003-H14 state aluminum plate lithium battery shell customization_0.5-6mm precision stamping aluminum material
Lithium-ion battery shells are mainly divided into hard shells (steel shells, aluminum shells, nickel-plated iron shells, etc.) and soft packages (aluminum-plastic film), among which aluminum alloy shells are currently the most popular. The power battery aluminum shell mainly uses 3003 aluminum plate, H14 state. The aluminum alloy has a low density and high plasticity. It can be stretched and formed at one time, eliminating the welding process, with good sealing and high safety.
As we all know, the power battery shell is formed through multiple punching. Because the hardness of the 5 series, 6 series, 2 series and 7 series is strong, it is not suitable for deep drawing. The hardness of the 1 series and 8 series is low, and it is not suitable for large-capacity batteries. And 3003 aluminum alloy has been tested many times from performance to composition, and it is very suitable for making new materials for power battery shells.
The use of 3003 aluminum plate for power battery shell has the following advantages:
1. Low density. The density of aluminum alloy is much smaller than that of traditional stainless steel shell. New energy electric vehicles require a large number of lithium battery combination modules. The weight of the shell has a great influence on the weight of the entire battery module. The use of aluminum alloy materials can reduce the weight of the battery and achieve lightweight development.
2. Good stretchability. The 3003 aluminum alloy material is soft and has the advantages of easy overall stretching of the power battery aluminum shell. It can be stretched and formed at one time. Compared with the stainless steel shell, the box bottom welding process can be omitted.
3. Corrosion resistance. The main alloying element of 3003 aluminum plate is manganese, which has high temperature corrosion resistance. It has high corrosion resistance even in humid environments and has a long service life.
4. High safety. The aluminum shell of lithium battery is also weaker than the steel shell. Once an accident occurs, the harm caused by the aluminum shell power battery is relatively lower.
As the carrier of the battery module, the power battery shell plays a key role in the stable operation and safety protection of the battery module. The strength, rigidity and processability of the raw material 3003 aluminum plate must meet the requirements. At present, there are many aluminum plate manufacturers on the market, with different process levels and product quality. Be cautious when choosing.
Mingtai Aluminum is a large domestic aluminum plate manufacturer and a listed company. It has long been supplying 1-8 series aluminum plates, strips and foils, and customized production on demand. The requirements for 3003 aluminum plates for battery shell materials are relatively high. When purchasing ingots, there are special requirements for the chemical composition of 3003 aluminum alloys with other uses, and there are also some differences in the process. The company strictly controls the process flow and produces 3003 aluminum plates with excellent performance, which meets the processing requirements of battery shell materials. At present, it has established cooperative relations with many large companies.
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