Analysis of packaging types of lithium batteries

Lithium battery customization is not only the customization of its specifications, sizes, etc., but also the packaging form that requires everyone to pay special attention. The packaging form refers to the material and state of the outer packaging of the lithium battery. The major packaging forms of the lithium battery on the market are square, cylindrical and soft. The industry has never stopped disputes over the three packaging routes of lithium batteries: square, soft and cylindrical. The square and cylindrical shapes are both encapsulated by a hard metal material steel shell material, and the outer material of the soft package is mainly aluminum-plastic film. Regarding the customized packaging forms of lithium batteries, different packaging forms have different advantages and disadvantages. The outer packaging of the soft pack is aluminum-plastic film. In fact, the soft pack is also a square shape. In the market, it is customary to call the aluminum-plastic film package as a soft pack, and some people call the soft pack battery a polymer battery. Different package structures mean different characteristics, and they have their own advantages and disadvantages. Regarding the prismatic lithium battery, the shell is mostly made of aluminum alloy, stainless steel and other materials, and the inside is wound or laminated. The protection of the battery cell is better than that of the aluminum-plastic film battery (ie soft pack battery). The performance has also been greatly improved compared to cylindrical batteries. At present, the mainstream companies that process square hard-shell batteries include Guoxuan Hi-Tech, Samsung SDI, Lishen, and Ningde Times. Cylindrical batteries are mainly steel-shell cylindrical lithium iron phosphate batteries, which are characterized by high capacity, high output voltage, good charge and discharge cycle performance, stable output voltage, large current discharge, stable electrochemical performance, and safe use. , Wide operating temperature range, environmentally friendly. 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 extend the service life of UPS lithium battery pack?