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Building 6, Jingneng science and technology environmental protection industrial park, No. 3, Baolong Second Road, Longgang District
Experimental analysis and summary of laser welding process of power battery tabs
Purpose:
Stack four pieces of 0.2mm tabs (nickel-plated aluminum or copper tabs) together and weld them to the aluminum or copper poles to achieve a smooth weld.
Experimental system used:
Laser | YLS-4000 (100um optical fiber) |
model | CW Continuous |
Laser head (nozzle) | D50 (output power up to 50kW) |
Focal length | FC=200，F(xiàn)F=250mm |
CNC platform or robot | Four-axis motion platform |
Battery tab laser welding joint
Experimental materials used:
Material grade | Aluminum sheets, nickel-plated copper sheets, aluminum poles |
Form (board, block, wire) | V |
Size | 0.2mm Tab，1mm pole |
Experimental results:
4 pieces of nickel-plated copper tabs are welded to the copper poles | |
Power | 2400W |
thickness | 1mm，4 layers |
Speed | 100 mm/s |
4 aluminum pole lugs are welded to the aluminum pole | |
Power | 1600W |
thickness | 1mm，4 layers |
Speed | 100 mm/s |
Summary:
After using the clamp, the welding effect is relatively good.
This welding is performed separately, one weld seam at a time.
Through testing, it can be found that the biggest factor affecting the welding effect is whether the tabs are pressed tightly.
The welding effect after compression is significantly better than that without compression.
At the same time, it also explains that when laser welding any material, it is necessary to ensure that the distance between the materials needs to be within a suitable range. Too large or too small will affect the welding effect, especially for deep penetration welding. Too small a gap will cause cracks during welding. The gas cannot be discharged in time, resulting in pores. If the size is too large, the welding penetration will affect the quality of the process.
Tel：+86 0755-89302056
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Address：Building 6, Jingneng science and technology environmental protection industrial park, No.3, Baolong Second Road, Longgang District. Shenzhen.China
