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    SCALABLE MANUFACTURING PROCESS FOR BATTERY CELLS WITH STACKED ELECTRODES
    1.
    发明申请
    SCALABLE MANUFACTURING PROCESS FOR BATTERY CELLS WITH STACKED ELECTRODES 有权

    公开(公告)号：US20250132393A1

    公开(公告)日：2025-04-24

    申请号：US18490412

    申请日：2023-10-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Binsong Li ,  Liang Xi ,  SriLakshmi Katar

    IPC: H01M10/058 ,  H01M10/04 ,  H01M10/0525

    Abstract: A method of manufacturing a battery cell includes providing a battery cell container. The method also includes generating a first battery monocell having a respective anode, cathode, first separator arranged therebetween, and a second separator arranged adjacent to the corresponding anode. The method additionally includes generating a second battery monocell having a respective anode, cathode, first separator arranged therebetween, and a second separator arranged adjacent to the corresponding anode. The method also includes stacking the first battery monocell and the second battery monocell such that the second separator of the first battery monocell is adjacent to the cathode of the second battery monocell. The method further includes arranging the stacked first and second battery monocells in the battery cell container.

    CELL STACK SUPPORT FOR A VEHICLE BATTERY CELL
    2.
    发明申请
    CELL STACK SUPPORT FOR A VEHICLE BATTERY CELL 有权

    公开(公告)号：US20240421407A1

    公开(公告)日：2024-12-19

    申请号：US18335289

    申请日：2023-06-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Lei Wang ,  Fengkun Wang ,  Liang Xi ,  Linan Zheng ,  SriLakshmi Katar ,  Arturo Sanchez Perez

    IPC: H01M50/249 ,  B60L50/64 ,  H01M50/233 ,  H01M50/264 ,  H01M50/30

    Abstract: A battery cell for a vehicle includes a cell can having a first wall, a second wall, a first side wall and a second side wall. The first wall, the second wall, the first side wall, and the second side wall defining an electrode stack receiving zone. A vent is formed in the second wall. The vent is spaced from the first side wall and the second side wall. The vent fluidically connects the electrode stack receiving zone with an exterior of the cell can. An electrode stack is positioned in the electrode stack receiving zone. The electrode stack is spaced from of the first side wall by a channel. A cell stack support is arranged in the electrode stack receiving zone and supporting the electrode stack above the second wall. The cell stack support includes at least one passage that transports gases from the channel to the vent.

    HIGH ENERGY DENSITY CYLINDRICAL BATTERY CELL DESIGN WITH STACKED ELECTRODES
    3.
    发明申请
    HIGH ENERGY DENSITY CYLINDRICAL BATTERY CELL DESIGN WITH STACKED ELECTRODES 有权

    公开(公告)号：US20240421449A1

    公开(公告)日：2024-12-19

    申请号：US18335403

    申请日：2023-06-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Binsong Li ,  Liang Xi ,  SriLakshmi Katar

    IPC: H01M50/559 ,  H01M4/134 ,  H01M50/107 ,  H01M50/367 ,  H01M50/538

    Abstract: A battery cell includes a case and an electrode stack disposed within the case. The battery cell includes an anode including a first conductive tab, a cathode including a second conductive tab, and a separator. The battery cell further includes two electrical connections, each attached to one of the first conductive tab or the second conductive tab and to one of a negative terminal and a positive terminal, respectively. The anode, the cathode, and the separator each include a common perimeter including a first portion matching a shape of an interior surface of the case and a second portion including a cut-out configured to recede from the interior surface. The second portion of the anode, the cathode, and the separator are aligned and create a region between the stack and the interior surface. The tabs and electrical connections are disposed within the region.

    CELL STACK SUPPORT FOR A VEHICLE BATTERY CELL
    7.
    发明申请
    CELL STACK SUPPORT FOR A VEHICLE BATTERY CELL 有权

    公开(公告)号：US20240421436A1

    公开(公告)日：2024-12-19

    申请号：US18335521

    申请日：2023-06-15

    Applicant: GM Global Technology Operations LLC

    Inventor： Liang Xi ,  Fengkun Wang ,  Lei Wang ,  SriLakshmi Katar

    IPC: H01M50/477 ,  B60K1/04 ,  B60L50/64 ,  H01M50/103 ,  H01M50/367 ,  H01M50/474 ,  H01M50/486

    Abstract: A battery cell for a vehicle includes a cell can having a first wall, a second wall, a first side wall and a second side wall. The first wall, the second wall, the first side wall, and the second side wall defining an electrode stack receiving zone. A vent formed in the second wall. The vent fluidically connects the electrode stack receiving zone with an exterior of the cell can. An electrode stack is positioned in the electrode stack receiving zone. The electrode stack is spaced from of the first side wall by a channel. The cell can includes a plurality of raised ribs formed in the second wall. Each of the plurality of raised ribs includes a support surface. The electrode stack rests on the support surface in the electrode stack receiving zone.

    METHOD AND SYSTEM FOR A PRISMATIC BATTERY CELL ASSEMBLY
    9.
    发明公开
    METHOD AND SYSTEM FOR A PRISMATIC BATTERY CELL ASSEMBLY 审中-公开

    公开(公告)号：US20240356176A1

    公开(公告)日：2024-10-24

    申请号：US18303821

    申请日：2023-04-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Andrew P. Oury ,  Liang Xi ,  Binsong Li ,  SriLakshmi Katar

    IPC: H01M50/54 ,  H01M10/0585 ,  H01M50/103 ,  H01M50/533 ,  H01M50/536

    CPC classification number: H01M50/54 ,  H01M10/0585 ,  H01M50/103 ,  H01M50/533 ,  H01M50/536

    Abstract: A prismatic battery cell assembly has a prismatic container that includes a body portion composed of opposed first and second side portions, opposed first and second end portions, a bottom portion, and a top portion. An electrode stack is composed as anodes interleaved with cathodes. Each of the anodes includes a first current collector having an uncoated anode current collector portion that extends in a first direction away from the electrode stack, and each of the cathodes includes a second current collector having an uncoated cathode current collector portion that extends in a second direction away from the electrode stack. A first terminal is joined to the uncoated anode current collector portions of the first current collectors of the anodes, and a terminal is joined to the uncoated cathode current collector portions of the second current collectors of the cathodes.

    EXPANDABLE CONDUCTIVE TAB FOR STACKED ELECTRODE BATTERY CELL
    10.
    发明申请
    EXPANDABLE CONDUCTIVE TAB FOR STACKED ELECTRODE BATTERY CELL 有权

    公开(公告)号：US20250118837A1

    公开(公告)日：2025-04-10

    申请号：US18482659

    申请日：2023-10-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Binsong Li ,  Liang Xi ,  SriLakshmi Katar

    IPC: H01M50/489 ,  H01M10/0525 ,  H01M50/536

    Abstract: A battery cell includes a first electrode stack and a second electrode stack, each having at least one pair of anode and cathode elements. The cell also includes a container defining an internal chamber housing the first and second electrode stacks and having external first and second battery terminals. The cell additionally includes a first electrically conductive tab connected to the first battery terminal and to each anode element in the first and second electrode stacks and having a first expandable portion arranged between the first and second electrode stacks. The cell also includes a second electrically conductive tab connected to the second battery terminal and to each cathode element in the first and second electrode stacks and having a second expandable portion arranged between the first and second electrode stacks. The expandable portions absorb alternating expansion and contraction of the subject electrode stacks during cell charging and discharging.

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