公开(公告)号：US20250141063A1

公开(公告)日：2025-05-01

申请号：US18499539

申请日：2023-11-01

Applicant: GM Global Technology Operations LLC

Inventor： Matthew Arthur Celentano ,  Hwanchul Kim ,  Vincent Edward Herrman ,  Subrahmanyam Goriparti ,  John Christian Kalil

IPC: H01M50/54 ,  H01M4/04 ,  H01M50/536

Abstract: A battery cell includes a housing enclosing an anode and a cathode, and an electrode assembly disposed in the housing, the electrode assembly including a plurality of electrode layers, each of the plurality of electrode layers having a respective tab configured to electrically connect the plurality of electrode layers to one another. A first electrode layer includes a first tab, the first tab being offset from another tab of another electrode layer.

公开(公告)号：US20250087736A1

公开(公告)日：2025-03-13

申请号：US18462599

申请日：2023-09-07

Applicant: GM Global Technology Operations LLC

Inventor： Hwanchul Kim ,  Mahboob Murshed

IPC: H01M10/04 ,  B23K26/38 ,  H01M50/533

Abstract: A system for forming tabs in a battery cell foil includes a web roller including a surface and a guide element support member shiftably connected to the web roller. The guide element support member includes a guide element support surface. A plurality of guide elements is supported on the guide element support member. Each of the plurality of guide elements being associated with a different tab dimension. The plurality of guide elements being selectively shiftable relative to the surface of the web roller. A tab cutting mechanism directed at one of the plurality of guide elements. A control system is operatively connected to the guide element support member. The control system is operable to selectively shift select ones of the plurality of guide elements into alignment with the tab cutting mechanism in order to selectively control dimensional attributes of tabs being formed in a moving sheet of battery cell foil.

公开(公告)号：US20250141037A1

公开(公告)日：2025-05-01

申请号：US18499622

申请日：2023-11-01

Applicant: GM Global Technology Operations LLC

Inventor： Hwanchul Kim ,  Raghavendra Keerthi Manda ,  Subrahmanyam Goriparti ,  Vincent Edward Herrman ,  Fengkun Wang

IPC: H01M50/367 ,  B60L50/50 ,  H01M50/209 ,  H01M50/249 ,  H01M50/289

Abstract: A battery cell includes a gas flow vent system including a cell can having a plurality of walls that define a cell stack receiving zone. The plurality of walls include a vent surface including a vent opening and a gas flow guide surface. A cell stack is arranged in the cell stack receiving zone. A spacer is arranged in the cell stack receiving zone adjacent the gas flow guide surface. The spacer includes a first surface facing the cell stack and a second surface spaced from the gas flow guide surface so as to define a gas flow duct that channels gases from the cell stack to the vent opening.

公开(公告)号：US20250118880A1

公开(公告)日：2025-04-10

申请号：US18480793

申请日：2023-10-04

Applicant: GM Global Technology Operations LLC

Inventor： Hwanchul Kim ,  Subrahmanyam Goriparti ,  Vincent Edward Herrman ,  Youngmin Chung

IPC: H01M50/645 ,  H01M50/103 ,  H01M50/15 ,  H01M50/193

Abstract: A power cell includes a plurality of anode, cathode and separator sheets arranged as layers and disposed within a container. An anode terminal protrudes from the layers, and a cathode terminal protrudes from the layers. A cover plate seals the container and includes a first fill port. A reusable fill port plug is disposed within the first fill port. The reusable fill port plug has a threaded shaft extending axially from a head along an axis defined by the threaded shaft and a compressible seal disposed about the threaded shaft and contacting the head.

公开(公告)号：US20250132469A1

公开(公告)日：2025-04-24

申请号：US18490176

申请日：2023-10-19

Applicant: GM Global Technology Operations LLC

Inventor： Vincent Edward Herrman ,  Hwanchul Kim ,  Subrahmanyam Goriparti ,  Masoud MohammadPour

IPC: H01M50/54 ,  B23K26/21 ,  B23K101/36 ,  H01M50/528 ,  H01M50/533 ,  H01M50/536

Abstract: A battery cell has a plurality of first electrode tabs and a plurality of second electrode tabs welded to a current collector. The current collector has a first side surface and a second side surface. Each of the electrode tabs of the plurality of first electrodes are coupled to the first side surface. Additionally, each of the electrode tabs of the plurality of second electrodes are coupled to the second side surface.

公开(公告)号：US20250096435A1

公开(公告)日：2025-03-20

申请号：US18469778

申请日：2023-09-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Youngmin Chung ,  Hwanchul Kim ,  Vincent Edward Herrman ,  Won-cheol Chang ,  Jacob Trogan

IPC: H01M50/538 ,  H01M50/534 ,  H01M50/536 ,  H01M50/548

Abstract: Some embodiments disclosed herein are directed to battery cells with battery stacks having different tab lengths. Some embodiments may include a first battery stack that includes a first plurality of tabs extending from the first battery stack, and a second battery stack adjacent to the first battery stack that includes a second plurality of tabs extending from the second battery stack, where the second plurality of tabs are shorter than the first plurality of tabs. A weld plate may be welded to the first plurality of tabs and the second plurality of tabs without trimming the first plurality of tabs. Other embodiments may be disclosed or claimed.

公开(公告)号：US20240283015A1

公开(公告)日：2024-08-22

申请号：US18166823

申请日：2023-02-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Seung-Woo Chu ,  Mansu Park ,  Hwanchul Kim

IPC: H01M10/0565 ,  H01M10/058 ,  H01M50/59

CPC classification number: H01M10/0565 ,  H01M10/058 ,  H01M50/59 ,  H01M2300/0085

Abstract: An electrochemical battery cell may include an electrode assembly, a liquid electrolyte, a metallic battery enclosure or “can,” and a liquid solution. The electrode assembly and the electrolyte solution may be disposed within the battery can. The liquid solution may be disposed between the electrode assembly and the battery can. The liquid solution may include an organic solvent, a cross-linkable polymer and a cross-linking agent which may be converted into a conductive layer by reacting the cross-linkable polymer and the cross-linking agent of the liquid solution to form a reaction product. The liquid solution may include an ion conducting salt. The reaction product may be a polymer matrix and the organic solvent and/or the ion conducting salt may be contained within the polymer matrix. Reacting the cross-linkable polymer and the cross-linking agent may include applying heat to the liquid solution to convert the liquid solution into the reaction product.