2. Cylindrical battery parts-21700 battery cap

  213-2.jpg Difficulties in welding: The material is thin, easy to burn through, and the strength is not reached.

Solution: Control the consistency of incoming materials; design clamps with excellent performance and control the clamping gap; select small-core fiber lasers and use galvanometers for high-speed (above 300mm/s) welding.

3. Power battery module

   213-3.jpg Difficulties in welding: high penetration requirements and poor weld formation.

Solution: Choose a laser fiber core of 50μm~100μm, and use higher power for high-speed (above 80mm/s) welding.

4. Square battery components

  Difficulties in welding: there are many pores and explosion points are prone to occur, resulting in insufficient sealing.

Solution: Improve the cleanliness of the parts to be welded; use a fiber laser with a 50μm core, and the welding speed can be increased appropriately.

5. Shell sealing

Difficulty in welding 1: There are many pores and explosion points are prone to occur, resulting in insufficient sealing.

Solution: Improve the cleanliness of the parts to be welded; use a 50μm core fiber laser, and the welding speed can be increased appropriately; use a small core fiber laser + semiconductor laser for composite welding.

Welding difficulty 2: The four corners of the square weld are easy to burn through, resulting in insufficient sealing.

Solution: Choose a welding platform with better acceleration performance; use a higher welding speed to shorten the laser irradiation time at the corner.

Welding difficulty 3: The weld is unevenly formed and the processing efficiency is not high enough.

Solution: Use small core fiber laser + semiconductor laser for hybrid welding.

6. Bus bar

  213-6.jpg Difficulties in welding:

The material is thin and multiple pieces are easily welded together, resulting in insufficient strength and poor electrical conductivity.

Solution: Control the flatness of incoming materials; design clamps with excellent performance and control the clamping gap.

Difficulties in welding: Insufficient width of weld connection leads to insufficient strength.

Solution: Choose a small core fiber laser and use swing welding.

7. Side panels

  213-7.jpg Difficulties in welding: There are many welding parts and high efficiency requirements.

Solution: Choose high-power fiber laser for remote scanning welding.

8. Soft connection

Difficulties in welding: The material is thin, and multiple pieces are easily welded together, resulting in insufficient strength and poor conductivity.

Solution: Check the flatness of incoming materials; design clamps with excellent performance and control the clamping gap.

Difficulties in welding: Insufficient width of weld connection leads to insufficient strength.

Solution: Choose a small core fiber laser and use swing welding.

Solution: Check the flatness of incoming materials; design clamps with excellent performance and control the clamping gap.

Difficulties in welding: Insufficient width of weld connection leads to insufficient strength.

Solution: Choose a small core fiber laser and use swing welding.