What are the differences between aluminum package lithium battery and soft package lithium battery?

The difference between aluminum shell-packed lithium battery and soft-packed lithium battery ●Shell: The aluminum shell-packed lithium battery has a strong shell and is not easy to deform; the soft-packed lithium battery shell is soft and easy to deform. ●Technology: The aluminum shell technology for packaging lithium batteries with aluminum shells is very mature, and the requirements for indicators such as inflation rate and expansion rate are not high, and there are no technical barriers in the industry. ; The soft-packed lithium battery is easy to expand during the battery cycle, and there are still many problems that have not been solved. ●Cost: The aluminum shell battery has a high degree of automation, low manufacturing cost, and simple production. Currently, it has been produced nationwide; the aluminum-plastic film material of the soft-packed lithium battery still needs to be imported. ●Market: Aluminum shell battery is easy to form scale effect, product qualification rate and cost are easy to control, and profit in the market field is considerable; soft-pack lithium battery is mainly used in the middle and high-end market, and the profit rate per unit product is relatively high. The profit is higher than that of the aluminum shell battery, and the capital return cycle is also short. ●Technology: The aluminum shell packaging lithium battery adopts laser sealing technology, which has good sealing performance and prevents the sealing place from aging and air leakage. At the same time, the air pressure is not easy to discharge in the sealed state, which increases the potential safety hazard. For example, a short-circuit violent reaction of a lithium battery pack generates a lot of heat, which causes the electrolyte to decompose and vaporize. The lithium battery pack will bulge up, the gas cannot be dissipated, and the lithium battery pack will explode to a certain extent. ●Compared with soft-packed lithium batteries, aluminum shell-packed lithium batteries have a harder shell, which is an advantage and disadvantage. After sealing, the impact of accidental explosions is relatively new. ●The soft-pack lithium battery adopts the hot-melt process, and the burst pressure is much lower than that of the aluminum shell battery. In the event of a safety accident such as an internal short circuit, the battery is easy to bulge and exhaust, reducing the risk of explosion. 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 article: How to distinguish between lithium battery and storage battery?