Analysis of factors affecting the quality of aluminum shell materials for power lithium batteries

Power lithium battery aluminum shell is a kind of shell products used in high-speed railways, bullet trains, lithium battery cars and other fields. Generally speaking, in the process of processing the aluminum case of power lithium battery, there will be more or less defects. Although these defects are very small, they will also affect the appearance and use of the product. The major defect is the small particles on the surface of the aluminum shell of the current power lithium-ion battery. The main reasons for this phenomenon are as follows: 1. The reason for the formation of small particle adsorption is that there are four types of fine-grained burrs on the surface of the power lithium battery aluminum shell. There will be some dust and aluminum and even some water and oil. These impurities will cause tiny particles on the surface. 2. Because the aluminum shell material of power lithium battery is cast at high temperature, the processing speed of the aluminum shell is too fast and the cooling strength is large, which causes some elements in the alloy to be unable to be transformed into the desired elements within the specified time. Because this material has a needle-like structure, it has high hardness and poor plasticity. However, the tensile strength of this manufacturing process is very low, and not only yellow rust, but also cracks will appear at high temperature. 3. Impurities in the aluminum shell material of the power lithium battery will affect the operation of the entire shell. During the melting process of the aluminum shell, due to insufficient refining, impurities such as soil, refining agent, paint, powder coating, oxide film, etc. are all mixed into the aluminum shell, resulting in a decrease in the quality of the aluminum shell of the power lithium ion battery. Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: The origin of lithium battery and analysis of its advantages and disadvantages