What are the characteristics of cylindrical batteries, square batteries and soft-pack batteries?

Cylindrical storage battery has the longest development time, and the technology is also the most mature, with a high degree of standardization. Moreover, because the cylindrical battery has a large space between the cells during packaging, this type of battery has great advantages in terms of heat dissipation. Many models equipped with cylindrical batteries have adopted lower-cost air-cooling technology. However, the excessive number of batteries is a tricky problem. Even in models with high-energy-density batteries, thousands of cylindrical batteries must be put together. This also puts forward higher requirements for the vehicle battery management system. In addition, because the cylindrical battery needs to use a steel shell when assembled into a battery pack, its weight is relatively high. Theoretically, the energy density of the cylindrical battery is lower than the other two batteries. Square batteries: simple structure and light weight. Square batteries have a high penetration rate in the country. Because the structure of square batteries is relatively simple, the processing technology is not complicated, and because square batteries do not use high-strength stainless steel as the shell like cylindrical batteries, Therefore, the energy density of a square battery is theoretically higher than that of a cylindrical battery. However, because square batteries are generally designed for customization, the processing technology of square batteries is difficult to be unified, and the degree of standardization is low. At present, Weilai's ES6, ES8, Emgrand EV and other models all use square batteries. Soft-pack battery: high energy density, better flexibility in battery layout The soft-pack battery uses a superimposed manufacturing method, and is thinner than the other two types of batteries in volume, so its energy density is theoretically three The highest in the battery. And because of the small size of the soft-pack battery, it is better than the other two types of batteries in terms of flexibility in battery layout. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the advantages of aqueous lithium batteries?