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：US20250007125A1

公开(公告)日：2025-01-02

申请号：US18343482

申请日：2023-06-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Junjie MA ,  Masoud MOHAMMADPOUR ,  Teresa Jean RINKER ,  Blair E. CARLSON ,  Jennifer Therese BRACEY

IPC: H01M50/566 ,  H01M50/553

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; and laser welding W weld segments in each of L weld locations on the stack of external tabs of one of the C cathode electrodes and the A anode electrodes to join the external tabs of the one of the C cathode electrodes and the A anode electrodes to the terminal, where W and L are integers greater than one.

公开(公告)号：US20250149758A1

公开(公告)日：2025-05-08

申请号：US18386849

申请日：2023-11-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Masoud MOHAMMADPOUR ,  Junjie MA ,  Hui-ping WANG ,  Teresa Jean RINKER ,  Vincent Edward HERRMAN

IPC: H01M50/566 ,  H01M10/04 ,  H01M50/533

Abstract: A battery cell including a stack and a first internal terminal. The stack includes: C cathode electrodes each including a cathode current collector, a cathode active layer arranged on the cathode current collector, and an external connector extending from the cathode current collector; A anode electrodes each including an anode current collector, an anode active layer arranged on the anode current collector, and an external connector extending from the anode current collector; and S separators, where C, A, and S are integers greater than one. Each one of the external connectors, of one of the C cathode electrodes and the A anode electrodes, includes a first tab and a second tab extending farther than the first tab, the second tabs are folded onto the first tabs, and the first internal terminal is laser welded onto the second tabs.

公开(公告)号：US20250007119A1

公开(公告)日：2025-01-02

申请号：US18342095

申请日：2023-06-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Teresa Jean RINKER ,  Masoud MOHAMMADPOUR ,  Junjie MA ,  Blair E. CARLSON ,  Jennifer Therese BRACEY

IPC: H01M50/536 ,  H01M50/533 ,  H01M50/54

Abstract: A battery cell includes a stack including C cathode electrodes, A anode electrodes, and S separators, where C, A and S are integers greater than one. A first internal terminal includes a first slot. The external tabs of one of the C cathode electrodes and the A anode electrodes are inserted into the first slot. One of edges of the external tabs of one of the C cathode electrodes and the A anode electrodes are laser welded in the first slot, and portions of the external tabs of the one of the C cathode electrodes and the A anode electrodes extend through the first slot, are folded and laser welded to a surface of the first internal terminal.

公开(公告)号：US20240429553A1

公开(公告)日：2024-12-26

申请号：US18337916

申请日：2023-06-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Masoud MOHAMMADPOUR ,  Junjie MA ,  Teresa Jean RINKER ,  Blair E. CARLSON ,  Jennifer Therese BRACEY

IPC: H01M50/30 ,  B23K26/26 ,  H01M50/46 ,  H01M50/536

Abstract: A method for manufacturing a battery cell includes providing a stack including C cathode electrodes each including a cathode current collector, a cathode active layer, and an external tab extending from the cathode current collector, A anode electrodes including an anode current collector, an anode active layer, and an external tab extending from the anode current collector, and S separators. The method includes providing a terminal including a first portion connected to a second portion at a predetermined angle less than or equal to 100°; positioning external tabs of one of the A anode electrodes and the C cathode electrodes in contact with one of an inner surface and an outer surface of the first portion of the terminal; and laser welding ends of the external tabs to the one of an inner surface and an outer surface of the first portion of the terminal.