The battery pack shell, as the carrier of the battery module, mainly serves to carry the power battery system components such as the battery module, electrical module, and cooling module, while protecting the battery and electrical system from being damaged by external collisions and compressions. It plays an important role in the stable operation and safety protection of the battery module. Several requirements for battery pack casing: (1) The molding process of the power battery casing is complex, the mold design is precise, and all performance must be stable within strict limits. (2) In order to effectively protect the internal battery structure, while ensuring necessary plasticity, the power battery case must also have sufficient strength and hardness. (3) In order to adapt to different usage environments and ensure the service life of the battery, the material of the power battery casing must have good corrosion resistance and chemical stability. A battery rack is a frame made of metal such as iron or aluminum with standardized models according to the size of the battery. Widely used in industry, it also plays an important role in telecommunications rooms and medical equipment. Battery racks are mainly divided into: 2V series battery racks, 12V battery series battery racks, and FT series battery racks. This type of battery holder is the most commonly used and widely used application.