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    Temperature sensor
    13.
    发明授权
    Temperature sensor 有权

    公开(公告)号：US11525742B2

    公开(公告)日：2022-12-13

    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: H01M4/66 ,  H01M10/48 ,  G01K7/22 ,  G01K13/00 ,  H01M4/02

    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.

    ELECTROCHEMICAL CELL MONITORING ASSEMBLY
    14.
    发明申请
    ELECTROCHEMICAL CELL MONITORING ASSEMBLY 有权

    公开(公告)号：US20220238932A1

    公开(公告)日：2022-07-28

    申请号：US17160553

    申请日：2021-01-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Gayatri V. Dadheech ,  Mark W. Verbrugge ,  Alok Warey ,  James R. Salvador ,  Robert D. Schmidt

    IPC: H01M10/48 ,  H01M10/0525 ,  H01M10/42

    Abstract: A monitoring assembly for an electrochemical cell of a secondary lithium battery includes a porous sensory structure and a transducer. The porous sensory structure includes a sensory layer disposed on a major surface of a porous separator and a buffer layer disposed between the sensory layer and a facing surface of a negative electrode layer. The buffer layer electrically isolates the sensory layer from the facing surface of the negative electrode layer. The sensory layer includes an electrically conductive material and is configured to produce a response to an input signal or to a physical stimulus received within the electrochemical cell. The transducer is configured to process the response produced by the sensory layer to generate an output signal indicative of a diagnostic condition within the electrochemical cell.

    BATTERY INCLUDING INTEGRATED TEMPERATURE PROBE
    15.
    发明申请
    BATTERY INCLUDING INTEGRATED TEMPERATURE PROBE 有权

    公开(公告)号：US20250079660A1

    公开(公告)日：2025-03-06

    申请号：US18461792

    申请日：2023-09-06

    Applicant: GM Global Technology Operations LLC

    Inventor： Jing Gao ,  Anne Zhang ,  Brian J. Koch ,  Xingcheng Xiao ,  Zhe Li

    IPC: H01M50/569 ,  B60L50/64 ,  G01K1/02 ,  G01K3/02 ,  H01M10/48

    Abstract: A battery includes multiple stacked cells. Each cell includes an anode layer and a cathode layer separated by a permeable separator. At least one temperature probe structure is disposed on the permeable separator between the anode layer and the cathode layer of a first cell of the stacked cells. The temperature probe structure includes at least a first material partially coating the permeable separator and a second material partially coating the permeable separator. The first material overlaps with the second material at an overlap region. A first sensor output terminal is connected to the first material and a second sensor terminal is connected to the second material. A voltage differential between the first sensor output terminal and the second sensor output terminal corresponds to an average temperature of the overlap region.

    Battery component inspection based on optical and thermal imaging
    16.
    发明授权
    Battery component inspection based on optical and thermal imaging 有权

    公开(公告)号：US12182990B2

    公开(公告)日：2024-12-31

    申请号：US17743862

    申请日：2022-05-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Wei Zeng ,  Scott E. Parrish ,  Jing Gao ,  Brian J. Koch ,  Xingcheng Xiao

    IPC: G06T7/00 ,  G06T7/32 ,  G06T7/33 ,  G06V10/58 ,  H01M10/42

    Abstract: A system for inspecting a battery component includes a heating device configured to heat a surface of the battery component to a selected temperature, an optical-visible imaging device configured to take an optical image of the surface, a thermal imaging device configured to take a thermal image of the surface, and a processor configured to acquire the optical image and the thermal image. The processor is configured to correlate the thermal image with the optical image, identify a feature of interest in at least one of the optical image and the thermal image, determine a geometric characteristic and a temperature characteristic associated with the feature of interest, and determine whether the feature of interest is a defect based on the geometric characteristic and the temperature characteristic.

    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes
    19.
    发明授权
    Thin-film reference electrodes, electrochemical devices including thin-film reference electrodes, and methods of making thin-film reference electrodes 有权

    公开(公告)号：US11374268B2

    公开(公告)日：2022-06-28

    申请号：US16577934

    申请日：2019-09-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M10/48 ,  B05D1/00

    Abstract: A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.

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