The battery electrode ear is usually divided into three kinds of materials. The positive electrode of the battery uses aluminum (Al) material, and the negative electrode uses nickel (Ni) material or nickel (Ni-Cu) material. In the manufacturing process of power battery, one of the steps is to weld the battery pole ear and pole column together. The secondary battery is fabricated by welding it to another aluminium safety valve. Welding should not only ensure the reliable connection between the pole ear and pole column, but also require a smooth and beautiful weld. The following introduces the application of laser welding machine in electrode ear welding of lithium battery.

Lithium battery welding is mainly in the electrode and cap welding and battery sealing welding, in order to respond to the needs of the battery industry customers, to provide automation solutions, through the production line and laser battery welding platform, so that the original need for a lot of process steps of the welding become simpler and more efficient.

laser welding machine

For now popular rectangular section of the mobile phone battery, the sealing method is generally in the top of the battery has a rectangular cover plate, the plate with a positive electrode into the end, the cover plate into the shell and the mouth flush, and then the rectangular gap between the cover plate and the shell can be welded and sealed. Laser high brightness, good direction, good monochrome, use it to weld the seal of lithium battery shell, not only the thermal deformation is minimal, direct and simple, neat and beautiful welding seam, and easy to cooperate with the computer numerical control system or manipulator, automatic welding, high production efficiency.

Compared with the traditional welding method, the laser welding machine uses the high-speed scanning lens to replace the two-dimensional workbench, which greatly improves the welding speed and reduces the influence of the laser on the material properties. With the professional software with powerful graphics processing function, the program control instantaneous multi-point welding is realized. Stable complete machine system, providing the necessary conditions for industrial application. Make customers in use, get higher efficiency and flexibility, lower cost, more perfect system integration, bring the product is a stronger market competitiveness.