1, full welding is also called "full welding", which means that the contact places of two workpieces to be welded are all fused. Laser welding of top cover seal is a packaging process, in which the cover plate and aluminum case are laser welded in a fixture to seal the battery.

2. Cover plate welding is an encapsulation process in which the cover plate and aluminum case are laser welded together in a fixture to seal the battery.