Introduction to the specific production method of lithium ion battery

The specific manufacturing method of the lithium ion battery Method 1. The special solvent and binder for pulping are mixed with the powdery positive and negative active materials respectively, and the positive and negative materials are made into slurry after high-speed stirring. Method 2: Coating The prepared slurry is uniformly coated on the surface of the metal foil and dried to form positive and negative pole pieces respectively. Method 3. Assemble according to the order of positive electrode sheet-diaphragm-negative electrode sheet-diaphragm from top to bottom. The battery pole core is formed by winding, and then through the process of injecting electrolyte and sealing to complete the battery. Assembling process to make finished battery. Method 4, Chemicals uses special battery charging and discharging equipment to charge and discharge the finished batteries, test each battery, screen out qualified finished batteries, and then complete the production. OK. The positive electrode generally includes lithium cobaltate, lithium iron phosphate, lithium manganate, lithium nickelate, and ternary materials. Graphite is generally used for the negative electrode. When preparing the positive electrode, grind the positive electrode material, PVDF, and conductive carbon black in a certain ratio, such as 90:5:5. The grinding must be uniform, and then add NMP to make a slurry, and use a spatula to scrape the aluminum foil. Put it in an oven to dry and let the NMP volatilize. Then put it into a vacuum oven to dry. The negative electrode is prepared in the same way, except that the material is graphite, graphite, conductive carbon black, and the mass ratio of PVDF is 93:2:5. The squeegee coating process is a technical activity, and it may be useless to make N multiple electrode materials. It must be even. Install batteries, button batteries, negative case, steel sheet, negative electrode, a few drops of electrolyte, diaphragm, positive electrode, steel sheet, a few drops of electrolyte, steel ring, positive case. Then pressurize and compact. It can be charged and discharged after standing for more than 8 hours. 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: What is a lithium manganate battery? Introduction of Lithium Manganate Battery