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    SYSTEMS AND METHODS FOR DIAGNOSING HEALTH OF A BATTERY USING IN-VEHICLE IMPEDANCE ANALYSIS
    1.
    发明公开
    SYSTEMS AND METHODS FOR DIAGNOSING HEALTH OF A BATTERY USING IN-VEHICLE IMPEDANCE ANALYSIS 审中-公开

    公开(公告)号：US20230221375A1

    公开(公告)日：2023-07-13

    申请号：US17647962

    申请日：2022-01-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yue-Yun Wang ,  Steven Earl Muldoon ,  Lei Hao ,  Michael P. Barker

    IPC: G01R31/392 ,  H01M10/48

    CPC classification number: G01R31/392 ,  H01M10/48 ,  H01M2220/20

    Abstract: Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis. The method includes receiving a sensed current measurement for a cell of the battery; generating a current profile as a function of the sensed current measurement, including pulses to a peak current, the pulses having a pulse frequency (w); applying a current with the current profile to the cell; for each pulse in the current profile, receiving a voltage measurement for the cell that is responsive to the pulse, calculating an impedance for the cell responsive thereto, the impedance comprising a real component at the pulse frequency (RZw), and an imaginary component at the pulse frequency (IZw), identifying a battery health problem when either RZw exceeds a preprogrammed first threshold for the pulse frequency, or when IZw exceeds a preprogrammed second threshold for the pulse frequency, and storing the RZw and the IZw for the cell.

    CHARGING STATION IMPEDANCE MEASUREMENT AND CONTROL OF CHARGING PROCESSES
    2.
    发明申请
    CHARGING STATION IMPEDANCE MEASUREMENT AND CONTROL OF CHARGING PROCESSES 有权

    公开(公告)号：US20250074238A1

    公开(公告)日：2025-03-06

    申请号：US18460947

    申请日：2023-09-05

    Applicant: GM Global Technology Operations LLC

    Inventor： Steven Earl Muldoon ,  Akshay Sarin ,  Alan B. Martin ,  Yue-Yun Wang ,  Joseph Berg

    IPC: B60L53/62 ,  G01R31/389

    Abstract: A system includes a conversion device of a charging station, the conversion device connected to a first energy source of the charging station, and a controller configured to perform an impedance measurement applied to an energy storage system, the energy storage system selected from at least one of a second energy source of the charging station and a battery system of a vehicle. The controller is configured to cause the first energy source to generate a first excitation signal for measuring a first energy source impedance, control the conversion device to adjust a parameter of the first excitation signal to convert the first excitation signal to a converted excitation signal, apply the converted excitation signal to the energy storage system, detect a current response of the energy storage system, and estimate the impedance of the energy storage system based on the current response.

    Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis
    3.
    发明授权
    Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis 有权

    公开(公告)号：US12282069B2

    公开(公告)日：2025-04-22

    申请号：US17647962

    申请日：2022-01-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Yue-Yun Wang ,  Steven Earl Muldoon ,  Lei Hao ,  Michael P Barker

    IPC: G01R31/392 ,  H01M10/48

    Abstract: Systems and methods for diagnosing health of a battery using in-vehicle impedance analysis. The method includes receiving a sensed current measurement for a cell of the battery; generating a current profile as a function of the sensed current measurement, including pulses to a peak current, the pulses having a pulse frequency (w); applying a current with the current profile to the cell; for each pulse in the current profile, receiving a voltage measurement for the cell that is responsive to the pulse, calculating an impedance for the cell responsive thereto, the impedance comprising a real component at the pulse frequency (RZw), and an imaginary component at the pulse frequency (IZw), identifying a battery health problem when either RZw exceeds a preprogrammed first threshold for the pulse frequency, or when IZw exceeds a preprogrammed second threshold for the pulse frequency, and storing the RZw and the IZw for the cell.

    DISTRIBUTED BATTERY MANAGEMENT FOR A VEHICLE
    6.
    发明公开
    DISTRIBUTED BATTERY MANAGEMENT FOR A VEHICLE 审中-公开

    公开(公告)号：US20240079662A1

    公开(公告)日：2024-03-07

    申请号：US17939529

    申请日：2022-09-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Lei Hao ,  Yue-Yun Wang ,  Steven Earl Muldoon ,  Michael P. Barker ,  Yongjie Zhu

    IPC: H01M10/42 ,  H01M10/48 ,  H01M50/267

    CPC classification number: H01M10/4257 ,  H01M10/482 ,  H01M50/267 ,  H01M2010/4271 ,  H01M2010/4278 ,  H01M50/249 ,  H01M2220/20

    Abstract: An example method includes receiving, at a module management unit (MMU) associated with a battery cell, a battery cell parameter measurement associated with the battery cell. The MMU in is communication with a battery radio frequency module via a first link. The method further includes performing, by the MMU, a first function based at least in part on the battery cell parameter measurement to generate a first signal, and transmitting, from the MMU, the first signal to the battery radio frequency module via the first link. The method further includes performing, by the battery radio frequency module, a second function based at least in part on the first signal to generate a second signal. The method further includes transmitting, from the battery radio frequency module, the second signal to a controller, and performing, by the controller, a third function based at least in part on the second signal.

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