Aluminum shell is a kind of battery shell made of aluminum alloy material. It is generally made of 3003 aluminum plate, h14 state. It is mainly used in square lithium-ion batteries. The reason why lithium-ion batteries are packaged in aluminum shells is that it is lighter and lighter than steel. Shell is more secure. The aluminum shell alloy material structure has significant safety performance considerations, which can be expressed by material thickness and bulging coefficient. The reason why the lithium-ion battery of the same capacity is lighter than that of the steel case is that the aluminum case can be made thinner.

The use of aluminum as a material has the advantages of easy processing, high temperature corrosion resistance, good heat transfer and electrical conductivity. The aluminum power battery shell (except the shell cover) of aluminum alloy can be stretched and formed at one time. Compared with the stainless steel shell, The welding process of the bottom of the box can be omitted, and there will be no problems such as the deterioration of the quality of the welding seam due to the burning of metal elements during welding.

3003 aluminum sheet specifications

3003 aluminum sheet advantages

1.Good forming processing characteristics, high corrosion resistance, good weldability and electrical conductivity;

2.Smooth surface, good plasticity and pressure resistance;

3.It has impact resistance, is not easy to break and leak, and can meet the strength and rigidity requirements of power battery shells;

4.Lightweight aluminum material for automobiles, with low density and light weight, can reduce the weight of the whole vehicle and improve the battery life of the vehicle;