Lithium-ion Battery Manufacturing Process

The positive electrode materials of lithium batteries include lithium cobaltate LiCoO2, ternary material Ni+Mn+Co, lithium manganate LiMn2O4 plus conductive agent and binder, which are coated on aluminum foil to form a positive electrode, and the negative electrode is layered graphite plus conductive agent and adhesive The agent is coated on the copper foil base tape, and the more advanced negative electrode layered graphite particles have adopted nano-carbon.
1. Slurry: Use special solvents and binders to mix with powdery positive and negative active materials respectively, and after stirring evenly, make slurry positive and negative materials.
2. Coating film: The positive and negative electrode slurries are evenly coated on the surface of the metal foil by an automatic coating machine, and the positive and negative electrode sheets are automatically cut after automatic drying.
3. Assembly: According to the order of positive electrode sheet-diaphragm-negative electrode sheet-diaphragm from top to bottom, the process of winding and injecting electrolyte, sealing, positive and negative tab welding and other processes is completed to complete the battery assembly process and make a finished battery.
4. Formation: Put the finished battery in the test cabinet for charge and discharge test, and select the qualified finished battery before leaving the factory.