The manufacturing process of lithium-ion battery pouch cells:
Soft-pack lithium-ion cells use heat sealing, while metal-cased cells generally use welding (laser welding). The reason soft-pack cells can use heat sealing is because they use an aluminum-plastic packaging film.
Step 1 -- Electrode paste preparation
The key is to mix the electrode active material, binder, solvent, etc. together, and then thoroughly stir and disperse them to form a slurry;
Step 2 - Coating
The slurry prepared in the first step is uniformly coated onto the current collector (aluminum foil or copper foil, etc.) to a specified thickness, and the solvent is then dried.
Step 3 - Electrode punching
The electrode sheets produced in the previous step are punched and cut into the specified size and shape;
Step 4 - Stacking
The positive and negative electrode plates and the separator are assembled together, and after adhesive bonding is completed, the electrode core is formed;
Step 5 - Assemble the pouch battery
