公开(公告)号：US20250055161A1

公开(公告)日：2025-02-13

申请号：US18447405

申请日：2023-08-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Masoud MOHAMMADPOUR ,  Teresa Jean RINKER ,  Junjie MA ,  Chih-chang CHEN ,  Andrew HROMADKA ,  Blair E. CARLSON ,  Jennifer Therese BRACEY

IPC: H01M50/566 ,  B23K26/0622 ,  B23K26/22 ,  B23K26/244 ,  B23K26/354 ,  H01M50/342

Abstract: A method for joining external tabs of a battery cell to a terminal includes providing a battery cell stack; arranging a stack of external tabs of one of C cathode electrodes and A anode electrodes on a terminal; laser melting ends of the stack of external tabs; and after the laser melting, laser welding the stack of external tabs of the one of the C cathode electrodes and the A anode electrodes to the terminal.

公开(公告)号：US20180277807A1

公开(公告)日：2018-09-27

申请号：US15466363

申请日：2017-03-22

Applicant: GM Global Technology Operations LLC

Inventor： Steven Daniel LORENTZ ,  Chih-chang CHEN ,  Wayne W. CAI ,  Nikolay KONDRATYEV ,  Roger M. BRISBANE

IPC: H01M2/10 ,  H01M2/20 ,  B23K26/242

CPC classification number: H01M2/1077 ,  B23K26/21 ,  B23K2101/006 ,  H01M2/206 ,  H01M2220/20

Abstract: A battery assembly includes a plurality of battery cells each including a cell tab and a bus bar connected to the cell tabs of adjacent battery cells. The bus bar including a pair of 180 degree bend regions that each define a channel for receiving a respective cell tab and a cut-out region defining an opening having opposing edge portions that allows direct access to the cell tab within the cut-out region. A weld line connects the cell tab to at least one of the opposing edge portions within the cut-out region.