公开(公告)号：US20250001522A1

公开(公告)日：2025-01-02

申请号：US18343456

申请日：2023-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Teresa Jean RINKER ,  Masoud Mohammadpour ,  Junjie Ma ,  Chih-Chang Chen

IPC: B23K26/21 ,  H01M50/566

Abstract: A method for joining external tabs of a battery cell to a terminal includes providing a battery cell stack including C cathode electrodes, A anode electrodes, and S separators, where C, S and A are integers greater than one. The method includes arranging a stack of external tabs of one of the C cathode electrodes and the A anode electrodes on a terminal; creating a trench in the stack of external tabs of the one of the C cathode electrodes and the A anode electrodes at a weld location during a first laser processing step; and welding the stack of external tabs of the one of the C cathode electrodes and the A anode electrodes at the weld location during a second laser processing step.