company news about Battery pole piece welding machine | battery pole welding machine

The technical scheme of the soft-packed lithium ion power battery tab welding structure is to directly weld the tab metal piece and the battery current collector through the ultrasonic welding machine during the welding of the positive and negative ear.

During the manufacturing process of the battery of the lithium ion battery, the battery core is formed by stacking a plurality of electrode core pieces, and each layer of the core foil protrudes from a layer of the electrode foil, and the electrode foil is aligned after the battery core piece is aligned. Also sticking and aligning together, it is necessary to weld the battery foil together to form a battery core, and to weld the tab foil together to form a tab. Since the tab foil is very thin, only about 0.01 mm, so the conventional By ultrasonic welding, the bottom mold is superimposed on the bottom of the superimposed tab foil as a support during welding, and the welding head of the ultrasonic welding device is pressed against the superimposed tab foil and a certain amount is applied to the tab foil through the welding head. Pressure, and then start the ultrasonic welding device, the welding head directly outputs ultrasonic waves, and the resonance of the atoms on the adjacent tab foils under high-frequency vibration, thereby bonding the tabs of the tabs together.