What materials are generally used for energy storage battery shells?

What materials are generally used for energy storage battery shells?

The material selection of energy storage battery housing is a decision-making process that comprehensively considers many factors such as performance, cost, manufacturability, safety and environmental protection. Different types and uses of energy storage batteries, their shell materials will also be different.

The following are 4 common energy storage battery shell materials and their characteristics:

(1) Aluminum alloy
It has good electromagnetic shielding performance, which can protect the battery from electromagnetic interference. At the same time, aluminum alloy enclosures are lightweight and easy to process, so they are widely used in some scenarios where weight and cost are required. However, the strength and corrosion resistance of aluminum alloys may not be as good as other materials, which limits their application scope to some extent.

(2) Stainless steel
Stainless steel has high strength, corrosion resistance and good aesthetics, so it is widely used in some scenes with high safety requirements. However, the higher cost and greater weight of stainless steel may not be suitable for applications with strict requirements on cost and weight.

(3) Engineering plastics
Engineering plastics have the advantages of light weight, good insulation, easy processing and low cost, so they are widely used in some scenarios where portability and cost are required. In the manufacturing of energy storage power supply shell, engineering plastics are often used to manufacture battery covers, battery brackets, cable connectors and other components.

(4) Composite materials
Composite materials are composed of two or more kinds of materials and have excellent comprehensive properties. In the manufacturing of energy storage power supply shell, composite materials can be used to manufacture large brackets, guides and other components, which can meet complex structural design and higher strength requirements.

In addition to the above common materials, there are some other materials are also used in the manufacture of energy storage battery shells, such as titanium alloys, high molecular weight polymers, and so on. These materials have their own characteristics and application scenarios, and can be selected according to specific needs.

In general, the material selection of energy storage battery housing needs to consider a variety of factors, and weigh according to specific application scenarios and needs. In practical applications, material selection and process optimization are often required according to the specific situation to achieve the best performance and cost effectiveness.