Analysis of the composition and classification of lithium batteries

Lithium batteries are composed of four main materials: positive electrode material, negative electrode material, separator and electrolyte, which also account for 80% of the cost of lithium batteries, of which the positive electrode material accounts for about 30%-40%, and the negative electrode and electrolyte each account for 10%- 15%, the diaphragm accounts for 10%-20%. In addition to the four main materials, there are also current collector copper foil, aluminum foil, tabs, shells, etc., which together form a lithium battery. The positive electrode material is a key factor related to the size of the battery. The electrolyte is equivalent to the blood of the entire battery, which is crucial to the overall performance of the battery. The separator is a medium that effectively separates the positive and negative electrodes to ensure that lithium ions can shuttle freely between the positive and negative electrodes. At the same time, it will not short-circuit the positive and negative electrodes, and at the same time, it plays an important role in the safety and stability of the lithium battery itself. According to the different shells, lithium batteries are divided into aluminum shell batteries, steel shell batteries, flexible packaging batteries, and plastic shell batteries; according to the different battery shapes, they are divided into square batteries, cylindrical batteries and other irregular rectangular shaped batteries. At present, the critical batteries on the market are cylindrical batteries, flexible packaging batteries and hard-shell batteries (aluminum or steel). They each have their own advantages. Different products have different customer groups, and there is no clear market boundary. Which type? Batteries can eventually become the master of the market. This has to be verified and finalized by the market, because at present, they have their own advantages and disadvantages, and it is difficult to compete. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete it. Previous article: Why do we need to use the charger that matches the lithium battery?