China Lithium-ion Cell Manufacturing

Lithium battery production process: The first step - electrode slurry preparation. It is mainly to mix the electrode active material, binder, solvent, etc. together, and after fully stirring and dispersing, the slurry is formed. Step 2 - Coating. The slurry prepared in the first step is uniformly coated to the collector (aluminum foil or copper foil, etc.) at a specified thickness and the solvent is dried. The third step - pole slice punching. The pole pieces made in the previous step are punched into the specified size shape. Step 4 - Lamination. The positive and negative pole pieces and diaphragms are assembled together, and after the glue is completed, the core is formed. Step 5 - Assemble the soft pack battery. The core produced in the previous step is loaded into the aluminum-plastic film that has been punched into the pit, and the top seal, side seal, etc. are completed (and a mouth is left to be injected) to form an unfilled soft pack battery. Step 6 - Injection. Inject the specified amount of electrolyte into the soft pack battery cell. Of course, the battery cell must be baked, and the liquid injection operation is carried out in a low humidity environment, and the moisture content is too much. Step 7 - Battery sealing. The gas inside the battery cell is extracted and sealed in a vacuum environment.