Title:
LASER WELDING METHOD FOR MULTI-LAYER ALUMINUM FOIL, BATTERY, WELDING SYSTEM, AND CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/056053
Kind Code:
A1
Abstract:
The present disclosure provides a method for welding a multi-layer aluminum foil (10) of a current collector of a battery onto a corresponding structure (20), the method at least comprising: a laser welding operation, at least comprising: a spot welding operation of welding the multi-layer aluminum foil (10) and the corresponding structure (20), which is located under the multi-layer aluminum foil (10) in a stacking direction of the multi-layer aluminum foil (10), to each other by means of spot welding with laser pulses. In addition, further disclosed are a corresponding battery, a corresponding laser welding system (40), a corresponding control device (430) for a laser welding system (40), and a corresponding computer program product. According to some exemplary embodiments of the disclosure, cracks, in particular continuous cracks, can be reduced, providing high tolerance to the ultrasonic pre-welding process of multi-layer aluminum foils and improving the welding strength, etc.
Inventors:
LIU YUAN (CN)
WANG WEIYU (CN)
ZHOU CHUNYANG (CN)
LEHLEUTER FRANZ (CN)
WANG WEIYU (CN)
ZHOU CHUNYANG (CN)
LEHLEUTER FRANZ (CN)
Application Number:
PCT/CN2023/119016
Publication Date:
March 21, 2024
Filing Date:
September 15, 2023
Export Citation:
Assignee:
TRUMPF CHINA CO LTD (CN)
International Classes:
B23K26/22; B23K26/06; B23K26/073; B23K26/244; B23K26/32; H01M50/536; B23K101/36; B23K103/10
Foreign References:
| US20210299785A1 | 2021-09-30 | |||
| DE102021110804A1 | 2022-05-05 | |||
| US20210362271A1 | 2021-11-25 |
Attorney, Agent or Firm:
NTD PATENT & TRADEMARK AGENCY LTD. (CN)
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