What is a prismatic lithium ion battery? What are the advantages and disadvantages of square lithium-ion batteries

The prismatic lithium-ion battery usually refers to the aluminum shell or steel shell prismatic battery. The popularity of the prismatic battery is very high in China, because the structure of the prismatic battery is relatively simple, unlike the cylindrical battery that uses a higher strength stainless steel as the shell and has explosion-proof safety Valves and other accessories, so the overall accessory weight should be lighter, and the relative energy density is higher. Square batteries have two different processes: winding and lamination. A typical prismatic lithium-ion battery, the important components include: top cover, case, positive plate, negative plate, separator laminated or winding, insulating parts, safety components, etc. Among them, the two in the red circle are safety structures, NSD acupuncture safety device; OSD overcharge protection device. Advantages Square lithium-ion battery packaging has high reliability; high system energy efficiency; relatively light weight and high energy density; relatively simple structure and relatively convenient expansion. It is currently an important option for increasing energy density by increasing monomer capacity; monomer capacity Larger, the system configuration is relatively simple, which makes it possible to monitor the monomers one by one; another advantage brought by the simple system is that the stability is relatively good. Disadvantages Disadvantages, because the square lithium-ion battery can be customized according to the size of the product, there are thousands of models on the market, and because there are too many models, the process is difficult to unify; the level of processing automation is not high, and the monomers are different In large-scale applications, there is a problem that the life of the system is much lower than the life of the monomer. 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 post: Analysis of lithium-ion battery consistency issues