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    Switch duration setting for battery string state of charge balancing
    41.
    发明授权
    Switch duration setting for battery string state of charge balancing 有权

    公开(公告)号：US12255472B2

    公开(公告)日：2025-03-18

    申请号：US17575846

    申请日：2022-01-14

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jun-mo Kang ,  Charles W. Wampler, II ,  Dave G. Rich

    IPC: H01M10/44 ,  G01R31/382 ,  H01M10/46 ,  H01M10/48 ,  H02J7/00

    Abstract: A battery system includes: two battery modules, each including three strings of battery cells that are configured to, at different times be: connected in series and to a first positive terminal via first ones of switches; connected in parallel and to a second positive terminal via second ones of the switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: determine state of charges (SOCs) of the strings, respectively; determine periods of phases, respectively, based on the SOCs; determine first periods for connecting ones of the strings in parallel; divide one of the phases into N equal length periods; selectively decrease N; when a number of the first periods that end closest to one of N period endings is at least a predetermined value, adjust the first periods to the respective closest ones of the N period endings.

    Graphite foil as an active heating and passive cooling material in a battery pack
    43.
    发明授权
    Graphite foil as an active heating and passive cooling material in a battery pack 有权

    公开(公告)号：US11843088B2

    公开(公告)日：2023-12-12

    申请号：US17394224

    申请日：2021-08-04

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dave G. Rich ,  Saad Hasan ,  Lyall K Winger ,  Dewen Kong ,  Haijing Liu

    IPC: H01M10/615 ,  C09K5/14 ,  H01M10/0525 ,  H01M10/613

    CPC classification number: H01M10/615 ,  C09K5/14 ,  H01M10/0525 ,  H01M10/613

    Abstract: The present disclosure relates a temperature regulating system including an anisotropic material for use as a heating material or element (e.g., an active heater) and a cooling material or element (e.g., passive cooling) in a battery pack including one or more electrochemical cells. The temperature regulating system includes one or more temperature control elements. Each temperature control element is configured to be in a heat transfer relationship with one or more electrochemical cells so as to heat and/or cool the one or more electrochemical cells of the battery pack. Each temperature control element includes two or more structural elements and one or more anisotropic elements disposed between the two or more structural elements. The temperature control elements may be disposed between the electrochemical cells of the stack, disposed around the electrochemical cells of the stack, or both.

    ELECTRODE SEPARATOR WITH PIEZOELECTRIC LAYER FOR IN-STACK PRESSURE SENSING AND DENDRITE CLEANING
    44.
    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.

    BATTERY STRING STATE OF CHARGE BALANCING SYSTEMS AND METHODS
    46.
    发明公开
    BATTERY STRING STATE OF CHARGE BALANCING SYSTEMS AND METHODS 审中-公开

    公开(公告)号：US20230170710A1

    公开(公告)日：2023-06-01

    申请号：US17540116

    申请日：2021-12-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jun-mo KANG ,  Charles W. Wampler, II ,  Dave G. Rich

    IPC: H02J7/00

    CPC classification number: H02J7/0014 ,  H02J7/0024 ,  H02J7/0048

    Abstract: A battery system includes: switches; two battery modules, each of the two battery modules including three strings of battery cells configured to, at different times be: connected in series and to a first positive terminal via first ones of the switches; connected in parallel and to a second positive terminal via second ones of the switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: determine state of charges (SOCs) of the strings of battery cells, respectively; determine, using model predictive control, periods of phases, respectively, to balance SOCs of the battery modules; determine, using model predictive control, periods for the strings, respectively, to be connected during the phases to balance the SOCs of the strings of battery cells; and selectively actuate the switches based on the periods of the phases and the periods for the strings of battery cells.

    Capacitor-assisted solid-state battery with quasi-solid-state electrolyte
    48.
    发明授权
    Capacitor-assisted solid-state battery with quasi-solid-state electrolyte 有权

    公开(公告)号：US11171365B2

    公开(公告)日：2021-11-09

    申请号：US16390782

    申请日：2019-04-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhe Li ,  Dave G. Rich ,  Haijing Liu ,  Dewen Kong ,  Sherman H. Zeng

    IPC: H01M10/42 ,  H01M10/0565 ,  H01M10/0525 ,  H01M10/0562

    Abstract: A capacitor-assisted, solid-state lithium-ion battery is formed by replacing at least one of the electrodes of the battery with a capacitor electrode of suitable particulate composition for the replaced battery particulate anode or cathode material. The solid-state electrodes typically contain quasi-solid-state electrode material and are separated with a layer of quasi-solid-state electrolyte material. In another embodiment the capacitor anode or cathode particles may be mixed with lithium-ion battery anode or cathode particles respectively. Preferably, the battery comprises at least two positively-charged electrodes and two negatively-charged electrodes, and the location, number and compositions of the capacitor material electrode(s) may be selected to provide a desired combination of energy and power.

    Modular vehicle battery
    49.
    发明授权
    Modular vehicle battery 有权

    公开(公告)号：US10998595B2

    公开(公告)日：2021-05-04

    申请号：US16184126

    申请日：2018-11-08

    Applicant: GM Global Technology Operations LLC

    Inventor： Lyall K. Winger ,  Dave G. Rich ,  Saad Hasan

    IPC: H01M50/20 ,  B60L58/19 ,  B60L58/26 ,  H01M50/40 ,  H01M50/528 ,  H01M10/613 ,  H01M10/48

    Abstract: A battery of a vehicle includes a housing including: a lower portion that includes a plurality of separators extending vertically upward from a floor of the lower portion; and an upper portion that covers an opening of the lower portion and that is removable from the lower portion. The battery also includes: first and second terminals on the housing; third and fourth terminals on the housing; a plurality of individually housed batteries separated by the plurality of separators; a plurality of switches configured to selectively connect ones of the plurality of batteries to ones of the first, second, third, and fourth terminals; and a battery management module configured to control the plurality of switches.

    Battery switch testing system and method
    50.
    发明授权
    Battery switch testing system and method 有权

    公开(公告)号：US10996278B2

    公开(公告)日：2021-05-04

    申请号：US17002204

    申请日：2020-08-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jonathan O. Conell ,  Robert A. De Stefano ,  Dave G. Rich ,  Benjamin G. Wroblewski ,  Saad Hasan

    IPC: G01R31/36 ,  B60R16/033 ,  G01R31/364 ,  G01R31/385 ,  G05D1/02

    Abstract: A battery switch testing system that includes a memory configured to may include one or more executable instructions and a controller configured to execute the executable instructions, where the executable instructions enable the controller to: (a) monitor current discharge from a first battery; after (a), (b) when the current discharge from the first battery falls below a threshold value, open an internally integrated first battery switch of the first battery; after (b), (c) close the first battery switch; after (c), (d) monitor current discharge from a second battery; after (d), (e) when the current discharge from the second battery falls below a threshold value, open an internally integrated second battery switch of the second battery; and after (e), (f) close the second battery switch.

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