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US 2026/0284780 A1Published application
Battery module, method of manufacturing battery module, and method of inspecting laser welding
AssigneeAESC Japan Ltd.
InventorsYoshinari SASAKI, Sohei FUJITA, Yu MUTO
Life of this patent
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Abstract
A battery module (10) includes a laser welding portion (200) formed on a positive electrode tab (120), and a left laser etching mark (210) and a right laser etching mark (220) formed on both sides of the laser welding portion (200) on the positive electrode tab (120).
Claims7
A battery module comprising:
- a laser welding portion formed on a workpiece;
- and
- a laser etching mark formed on at least one of both sides of the laser welding portion on the workpiece.
A method of manufacturing a battery module comprising:
- a step of forming a laser welding portion on a workpiece;
- and
- a step of forming a laser etching mark on at least one of both sides of the laser welding portion on the workpiece.
A method of inspecting laser welding comprising:
- a step of inspecting similarities or differences between a laser etching mark formed on a workpiece on which a laser welding portion is formed and a pre-designed laser etching mark.
Dependencies are inferred from the claim text.