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    BATTERY CELL ENCLOSURE WITH ANTI-GRAVITY ELECTROLYTE DISTRIBUTION
    3.
    发明公开
    BATTERY CELL ENCLOSURE WITH ANTI-GRAVITY ELECTROLYTE DISTRIBUTION 审中-公开

    公开(公告)号：US20230402687A1

    公开(公告)日：2023-12-14

    申请号：US17835344

    申请日：2022-06-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Yanyan Zhang ,  Zhe Li ,  Daniel J. Wilson ,  Xingcheng Xiao

    IPC: H01M50/131 ,  H01M50/116

    CPC classification number: H01M50/131 ,  H01M50/116

    Abstract: A battery cell includes an anode, a cathode, a liquid electrolyte, and a battery cell case. The battery cell case is configured to house the anode, the cathode, and the liquid electrolyte and includes a case interior wall arranged proximate one of the anode and the cathode, a battery case ceiling, and a battery case floor catching and collecting the liquid electrolyte due to force of gravity. The case interior wall defines a pattern of surface tension varying between hydrophobic and hydrophilic along the case interior wall between the battery case floor and the battery cell ceiling. The pattern of surface tension thereby facilitates self-propulsion of the liquid electrolyte in opposition to the force of gravity and a predetermined distribution of the liquid electrolyte along the battery cell wall.

    ELECTRODE SEPARATOR WITH PIEZOELECTRIC LAYER FOR IN-STACK PRESSURE SENSING AND DENDRITE CLEANING
    5.
    发明公开
    ELECTRODE SEPARATOR WITH PIEZOELECTRIC LAYER FOR IN-STACK PRESSURE SENSING AND DENDRITE CLEANING 审中-公开

    公开(公告)号：US20230253637A1

    公开(公告)日：2023-08-10

    申请号：US17592630

    申请日：2022-02-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Zhe Li ,  Xingcheng Xiao ,  Brian J. Koch ,  Michael A Lelli ,  Dave G. Rich

    IPC: H01M10/48 ,  H01L41/113 ,  H01M50/293 ,  H01L41/047

    CPC classification number: H01M10/48 ,  H01L41/0475 ,  H01L41/1132 ,  H01M50/293

    Abstract: Presented are electrochemical devices with in-stack pressure sensors, methods for making/using such devices, and battery cells with electrode stacks having an electrode separator assembly with a piezoelectric layer for in-stack pressure sensing and dendrite cleaning. An electric machine, such as a lithium-class secondary battery cell for example, includes a device housing with an ion-conducting electrolyte located inside the device housing. A stack of working electrodes is also located inside the device housing, in electrochemical contact with the electrolyte. At least one electrode separator assembly is located inside the device housing, interposed between a neighboring pair of the working electrodes. The electrode separator assembly includes a pair of separator layers that transmit therethrough the ions of the electrolyte, and a piezoelectric layer that is interposed between the two separator layers. The piezoelectric layer outputs an electrical signal in response to deformation of one or both of the neighboring working electrodes.

    STACKED ELECTRODE ARCHITECTURES FOR ELECTROCHEMICAL DEVICES AND METHODS FOR MAKING ELECTROCHEMICAL DEVICES
    7.
    发明申请
    STACKED ELECTRODE ARCHITECTURES FOR ELECTROCHEMICAL DEVICES AND METHODS FOR MAKING ELECTROCHEMICAL DEVICES 有权

    公开(公告)号：US20230054685A1

    公开(公告)日：2023-02-23

    申请号：US17407487

    申请日：2021-08-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Michael A. Lelli ,  Jing Gao

    IPC: H01M10/0583 ,  H01M50/538 ,  H01M50/533

    Abstract: Presented are stacked electrode designs for electrochemical devices, methods for making/using such electrochemical devices, and lithium-class cylindrical and prismatic battery cells with stacked electrode architectures. An electrochemical device employs multiple first (e.g., anode) electrodes and multiple second (e.g., cathode) electrodes, each of which includes an active (anode/cathode) electrode material borne by an electrode body and a flexible tab projecting from the electrode body. Multiple electrically insulating separators are interleaved between and stacked along a central stack axis with the electrodes to define an electrode stack. A first electrically conductive current collector fully or partially surrounds the electrode stack and interference fits with the electrode tabs of the first electrodes to electrically connect thereto. A second electrically conductive current collector is disposed inside the first current collector, aligned substantially parallel with the central stack axis, and interference fit with the electrode tabs of the second electrodes to electrically connect thereto.

    TEMPERATURE SENSOR
    8.
    发明申请
    TEMPERATURE SENSOR 有权

    公开(公告)号：US20210247242A1

    公开(公告)日：2021-08-12

    申请号：US16788848

    申请日：2020-02-12

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Alfred Zhang ,  Gayatri V. Dadheech ,  Jing Gao ,  Brian J. Koch

    IPC: G01K7/22 ,  G01K13/00 ,  H01M10/48 ,  H01M4/66

    Abstract: A temperature sensor for a battery cell of a rechargeable battery is described, and includes a resistive sensing element, a first electrode, and a second electrode. The resistive sensing element, the first electrode, and the second electrode are affixed to a porous separator. The porous separator is interposed between an anode and a cathode of the battery cell. The resistive sensing element is electrically connected in series between the first electrode and the second electrode, and the resistive sensing element, the first electrode and the second electrode are affixed onto the separator as film layers, and are porous.

    CONNECTORS FOR THIN-FILM FUNCTIONAL SEPARATORS IN BATTERY CELLS
    9.
    发明申请
    CONNECTORS FOR THIN-FILM FUNCTIONAL SEPARATORS IN BATTERY CELLS 有权

    公开(公告)号：US20250096438A1

    公开(公告)日：2025-03-20

    申请号：US18469786

    申请日：2023-09-19

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Anne Zhang ,  Jing Gao ,  Christine Labaza ,  Yifan Zhao ,  Brian J. Koch ,  Raneen Taha

    IPC: H01M50/569 ,  B60L50/60 ,  H01M50/449 ,  H01M50/463 ,  H01M50/528

    Abstract: Some embodiments disclosed herein are directed to connectors for thin-film functional separators in battery cells. In accordance with an exemplary embodiment, a thin-film functional separator for a battery cell is provided. The thin-film functional separator may be disposed within the battery cell, such as between a cathode and anode of the battery cell. The thin-film functional separator includes a porous composite membrane that includes a microporous substrate and a coating layer, and includes a lead extending from the porous composite membrane. The lead extending from the porous composite membrane is coupled to an external conductive tab using a mechanical connector that electrically couples the external conductive tab to the lead extending from the porous composite membrane. Other embodiments may be disclosed or claimed.

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