With the development of laser welding technology, great breakthroughs have been made in the process and defect treatment. When laser welding is used for PACK module, virtual welding often occurs, which will not only affect the use of the entire battery, but also greatly affect the image of the enterprise.

Factors affecting the welding effect of laser welding PACK module:

1. Contamination of material surface

In general, when the laser welding machine is used for welding, attention should be paid to whether there is dirt on the surface of the material. Materials containing impurities placed in the weld area will lead to normal crystallization or crystallization at the weld, which is the main reason affecting the stability of laser welding machine;

In the process of using laser welding machine, people tend to think that the faster the welding speed, the faster the production, the better the product quality, in practical application, laser welding machine for material processing, laser and workpiece processing time is longer, the better the welding.

The power of laser welding machine is not suitable for the materials used. The energy required for welding of different materials is not the same. If the power used is too low, the materials after welding will not be strong. For some highly reflective materials, we can increase the welding power, deceleration and other process parameters to improve.

Worktables and clamps

The workbench and fixture are used to fix the material. If the material is not strong enough, it is likely to cause welding failure. For example, the nanosecond level laser welding equipment requires two solder joints to be completely butt together, otherwise it is easy to cause virtual welding. At the same time, due to the difficulty of welding, we also need to customize the mold and fixture according to the customer's requirements.

In a word, PACK module will have a great impact on the welding results during the welding process.