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    COMPUTING SYSTEM, BATTERY DETERIORATION PREDICTING METHOD, AND BATTERY DETERIORATION PREDICTING PROGRAM
    2.
    发明公开
    COMPUTING SYSTEM, BATTERY DETERIORATION PREDICTING METHOD, AND BATTERY DETERIORATION PREDICTING PROGRAM 审中-公开

    公开(公告)号：US20230286415A1

    公开(公告)日：2023-09-14

    申请号：US18006363

    申请日：2021-07-19

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： YOHEI ISHII

    IPC: B60L58/16 ,  G01R31/392 ,  G01R31/367

    CPC classification number: B60L58/16 ,  G01R31/367 ,  G01R31/392

    Abstract: Deterioration regression curve generation unit generates a deterioration regression curve of each battery by performing curve regression on a plurality of SOHs specified in time series for each battery Coefficient regression function generation unit generates a regression function of a deterioration coefficient using an average travel distance or an average discharge amount per unit period of a plurality of electrically-driven mobile units as an independent variable and using a deterioration coefficient of the deterioration regression curve of each of the plurality of the batteries as a dependent variable. Deterioration prediction unit specifies the average travel distance or the average discharge amount per unit period in accordance with the received change in the travel conditions, applies the average travel distance or the average discharge amount per unit period to the regression function of the deterioration coefficient to specify a deterioration coefficient after the change in the travel conditions, and uses the deterioration coefficient to change the deterioration regression curve of battery mounted in electrically-driven mobile unit.

    DETERIORATION DETERMINATION SYSTEM, DETERIORATION DETERMINATION METHOD, AND DETERIORATION DETERMINATION PROGRAM
    3.
    发明申请
    DETERIORATION DETERMINATION SYSTEM, DETERIORATION DETERMINATION METHOD, AND DETERIORATION DETERMINATION PROGRAM 有权

    公开(公告)号：US20240369643A1

    公开(公告)日：2024-11-07

    申请号：US18681056

    申请日：2022-07-26

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： YOHEI ISHII

    IPC: G01R31/392 ,  B60L58/16 ,  G01R31/367 ,  G01R31/396

    Abstract: In a deterioration determination system, a data obtainment unit obtains battery data. A SOH identification unit identifies a state of health (SOH) of a secondary battery on the basis of the battery data. A regression curve generation unit generates a deterioration regression curve of the secondary battery by performing curve regression on a plurality of SOHs of the secondary battery that have been identified in time series. A reference point setting unit sets a reference point on the deterioration regression curve. By performing linear regression on the plurality of SOHs obtained after the reference point, a regression line generation unit generates a deterioration regression line of the secondary battery that follows the reference point. A slope ratio calculation unit calculates a slope ratio between a slope of a tangent line to the deterioration regression curve at the reference point and a slope of the deterioration regression line following the reference point. A sudden deterioration determination unit determines sudden deterioration of the secondary battery on the basis of the slope ratio.

    MANAGEMENT DEVICE AND POWER SUPPLY SYSTEM
    5.
    发明申请
    MANAGEMENT DEVICE AND POWER SUPPLY SYSTEM 有权

    公开(公告)号：US20220355700A1

    公开(公告)日：2022-11-10

    申请号：US17623523

    申请日：2020-06-24

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： YOHEI ISHII

    IPC: B60L58/13 ,  B60L53/62 ,  H02J7/00

    Abstract: In a management device that manages a parallel system for power storage where a plurality of series-connected cell groups are connected in parallel, controller (16) derives deviations of currents flowing through the plurality of series-connected cell groups, and calculates an upper limit value of a charging current or charging power of the whole parallel system or an upper limit value of a discharging current or discharging power of the whole parallel system based on the derived current deviations. Controller (16) adjusts the upper limit value by multiplying the upper limit value by a coefficient α (0≤α≤1) in accordance with a condition at a time of deriving the current deviations.

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