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    ELECTROCHEMICAL DEVICES WITH MULTIFUNCTIONAL ELECTRODE SEPARATOR ASSEMBLIES HAVING BUILT-IN REFERENCE ELECTRODES
    22.
    发明申请
    ELECTROCHEMICAL DEVICES WITH MULTIFUNCTIONAL ELECTRODE SEPARATOR ASSEMBLIES HAVING BUILT-IN REFERENCE ELECTRODES 有权

    公开(公告)号：US20250030134A1

    公开(公告)日：2025-01-23

    申请号：US18355713

    申请日：2023-07-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

    IPC: H01M50/54 ,  B60L50/64 ,  H01M50/249 ,  H01M50/46 ,  H01M50/533 ,  H01M50/534 ,  H01M50/536

    Abstract: Presented are electrochemical devices with in-stack reference electrodes, methods for making/using such devices, and battery cells with stacked electrodes segregated by electrode separator assemblies having built-in reference electrodes. An electrochemical device includes a protective outer housing that contains an ion-conducting electrolyte. A stack of working electrodes is packaged inside the device housing in electrochemical contact with the electrolyte. At least one electrode separator assembly is located inside the housing, interposed between a neighboring pair of these working electrodes. The electrode separator assembly includes an electrically insulating separator sheet with a reference electrode. A tab pocket, which projects from an end of the separator sheet, includes a tab chamber with a chamber opening. An electrode tab is formed with an electrically conductive material and attached to the tab pocket. One end of the electrode tab is disposed in the tab chamber and the other end projects out from the chamber opening.

    MULTIFUNCTIONAL ELECTRODE SEPARATOR ASSEMBLIES WITH BUILT-IN REFERENCE ELECTRODES AND THERMAL ENHANCEMENTS
    25.
    发明公开
    MULTIFUNCTIONAL ELECTRODE SEPARATOR ASSEMBLIES WITH BUILT-IN REFERENCE ELECTRODES AND THERMAL ENHANCEMENTS 审中-公开

    公开(公告)号：US20230291077A1

    公开(公告)日：2023-09-14

    申请号：US17689220

    申请日：2022-03-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Xingcheng Xiao ,  Mark W. Verbrugge

    IPC: H01M50/46 ,  H01M50/449 ,  H01M50/491 ,  H01M10/48 ,  B60K1/04

    CPC classification number: H01M50/46 ,  H01M50/449 ,  H01M50/491 ,  H01M10/48 ,  B60K1/04 ,  H01M2220/20

    Abstract: Presented are electrochemical devices with in-stack reference electrodes, methods for making/using such devices, and battery cells with stacked electrodes segregated by electrode separator assemblies including thermal barriers and built-in reference electrodes. An electrochemical device, such as a lithium-class secondary battery cell, includes an insulated and sealed housing with an ion-conducting electrolyte located inside the 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 (anode and cathode) working electrodes. The electrode separator assembly includes a separator layer fabricated with an electrically insulating material that is sufficiently porous to transmit therethrough the ions of the electrolyte. An electrically conductive current collector (CC) layer, a thermally insulating thermal barrier (TB) layer, and an active electrode reference electrode (RE) layer are attached to the separator layer.

    ELECTROCHEMICAL SYSTEMS, METHODS, AND DEVICES USING STACKED ELECTRODE ASSEMBLIES WITH IN-STACK SENSOR ARRAYS
    27.
    发明申请
    ELECTROCHEMICAL SYSTEMS, METHODS, AND DEVICES USING STACKED ELECTRODE ASSEMBLIES WITH IN-STACK SENSOR ARRAYS 有权

    公开(公告)号：US20230091154A1

    公开(公告)日：2023-03-23

    申请号：US17479558

    申请日：2021-09-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Taylor R. Garrick

    IPC: B60L50/64 ,  H01M10/48 ,  H01M50/569 ,  H01M10/052 ,  H01M10/0585 ,  H01M50/46 ,  G01R31/396

    Abstract: Presented are electrochemical devices with in-stack sensor arrays, methods for making/using such electrochemical devices, and lithium-class battery cells with stacked electrode assemblies having in-stack sensor arrays. An electrochemical device includes a device housing that stores an electrolyte composition for conducting ions. An electrode stack, which is located inside the device housing in electrochemical contact with the electrolyte, includes at least two working electrodes. An electrically insulating and ionically transmissive separator is interposed between each neighboring pair of working electrodes. A reference electrode is attached to one side of the separator and connected to multiple electrical sensing devices. Multiple electrical sensing leads are attached to another side of the separator, opposite the reference electrode, with each abutting a discrete region of a working electrode and each connecting to one of the sensing devices to transmit thereto electrical signals indicative of an electrical characteristic (e.g., voltage) of the discrete region it contacts.

    METHOD AND APPARATUS FOR FABRICATING AN ELECTRODE FOR A BATTERY
    28.
    发明申请
    METHOD AND APPARATUS FOR FABRICATING AN ELECTRODE FOR A BATTERY 有权

    公开(公告)号：US20220352507A1

    公开(公告)日：2022-11-03

    申请号：US17244196

    申请日：2021-04-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Brian J. Koch ,  Jing Gao ,  Zhe Li ,  Yucong Wang

    IPC: H01M4/38 ,  H01M4/583 ,  H01M4/62 ,  H01M4/46 ,  H01M4/66 ,  H01M4/70

    Abstract: A reference electrode for a lithium-ion battery cell in the form of a porous ultrathin film that is fabricated from aluminum or an aluminum alloy is described. The aluminum layer is conductive and functions as a current collector for the reference electrode. The alloying elements may include but not limited to one or more of copper, zinc, silver, gold, titanium, chrome, rare earth metals, etc., to achieve target values for electrical, mechanical and chemical properties. Also disclosed is an electrochemical battery cell having an anode, a cathode, and a reference electrode, wherein the reference electrode is interposed between the anode and the cathode, wherein the reference electrode is an electrode layer that is arranged on a current collector, and wherein the current collector is fabricated from an aluminum alloy.

    ELECTRODE ASSEMBLY AND METHOD OF MAKING THE SAME
    29.
    发明申请
    ELECTRODE ASSEMBLY AND METHOD OF MAKING THE SAME 有权

    公开(公告)号：US20210218006A1

    公开(公告)日：2021-07-15

    申请号：US16740018

    申请日：2020-01-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jing Gao ,  Brian J. Koch ,  Zhe Li ,  Yucong Wang

    IPC: H01M2/26

    Abstract: Disclosed is an electrode assembly, comprising: an electrode; and an electrode tab, wherein the electrode tab is attached to the electrode, wherein the electrode tab comprises: a center portion, wherein the center portion comprises an attachment mechanism, wherein the electrode tab is attached to the electrode via the attachment mechanism; a protrusion portion, wherein the protrusion portion extends from the center portion and protrudes beyond a perimeter of the electrode; and a rounded portion, wherein the rounded portion extends from the center portion in a direction opposite the protrusion portion.

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