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    BATTERY MONITORING SYSTEM
    1.
    发明申请
    BATTERY MONITORING SYSTEM 审中-公开

    公开(公告)号：US20190265309A1

    公开(公告)日：2019-08-29

    申请号：US16284336

    申请日：2019-02-25

    Applicant: DENSO CORPORATION

    Inventor： Ichiro YAMADA ,  Nobuo YAMAMOTO ,  Shuhei YOSHIDA

    IPC: G01R31/396 ,  H01M10/48 ,  G01R31/382

    Abstract: A battery monitoring system monitors states of at least two secondary batteries. In the system, a data acquiring unit acquires a plurality of types of monitoring data to monitor the state of each of the secondary batteries. A failure determining unit determines whether the secondary battery has failed. The failure determining unit performs sparsity regularization using the acquired monitoring data of each of the secondary batteries as variables and calculates a partial correlation coefficient matrix of the monitoring data. The failure determining unit calculates, as an abnormality level, a difference in a partial correlation coefficient, which is a component of the partial correlation coefficient matrix, between two partial correlation coefficient matrices respectively calculated using the monitoring data of the two secondary batteries. The failure determining unit determines that either of the two secondary batteries has failed when the calculated abnormality level exceeds a predetermined threshold.

    SECONDARY BATTERY DETERIORATION DEGREE DETERMINATION DEVICE
    4.
    发明申请
    SECONDARY BATTERY DETERIORATION DEGREE DETERMINATION DEVICE 有权

    公开(公告)号：US20230118311A1

    公开(公告)日：2023-04-20

    申请号：US18068828

    申请日：2022-12-20

    Applicant: DENSO CORPORATION

    Inventor： Tomomi ASAI ,  Nobuo YAMAMOTO ,  Hiroyasu SUZUKI ,  Katsuki HAYASHI ,  Yuya MINABE

    IPC: G01R31/392 ,  G01R31/396 ,  G01R31/3835 ,  H02J7/00 ,  B60R16/033 ,  H01M10/48

    Abstract: A deterioration degree determination device includes a charging and discharging control unit, a battery characteristic acquisition unit, and a determination unit. The charging and discharging control unit, in a state where multiple secondary batteries are connected to each other to form a battery pack, performs a charging and discharging operation of the battery pack while voltages of the secondary batteries are individually measured. The battery characteristic acquisition unit acquires a battery characteristic related to transition in a battery state over a predetermined voltage section for at least some of the multiple secondary batteries. The determination unit determines a deterioration degree of at least some of the multiple secondary batteries based on the battery characteristic or a battery characteristic relationship value calculated based on the battery characteristic.

    DEVICE FOR ASSESSING DEGREE OF DEGRADATION OF SECONDARY BATTERY AND ASSEMBLED BATTERY
    6.
    发明申请
    DEVICE FOR ASSESSING DEGREE OF DEGRADATION OF SECONDARY BATTERY AND ASSEMBLED BATTERY 有权

    公开(公告)号：US20220146590A1

    公开(公告)日：2022-05-12

    申请号：US17585936

    申请日：2022-01-27

    Applicant: DENSO CORPORATION

    Inventor： Tomomi ASAI ,  Nobuo YAMAMOTO ,  Hiroyasu SUZUKI ,  Katsuki HAYASHI ,  Yuya MINABE

    IPC: G01R31/392 ,  G01R31/396 ,  H01M10/42

    Abstract: A degradation degree assessment device for a secondary battery is to assess a degree of degradation of a secondary battery and includes a battery characteristic acquisition unit, a capacity estimation unit, and an assessment unit. The battery characteristic acquisition unit acquires a battery characteristic relating to a voltage transition of the secondary battery in a predetermined voltage section. The assessment unit assesses the degree of degradation of the secondary battery based on the battery characteristic acquired by the battery characteristic acquisition unit or based on a battery characteristic-related value computed on the basis of the battery characteristic.

    VEHICLE BATTERY ASSESSMENT SYSTEM
    8.
    发明申请
    VEHICLE BATTERY ASSESSMENT SYSTEM 有权

    公开(公告)号：US20250067812A1

    公开(公告)日：2025-02-27

    申请号：US18941226

    申请日：2024-11-08

    Applicant: DENSO CORPORATION

    Inventor： Tomomi ASAI ,  Yoshikazu KUSANO ,  Nobuo YAMAMOTO ,  Shogo SUZUKI ,  Hiroyasu SUZUKI ,  Keisuke GOTO

    IPC: G01R31/392 ,  B60L58/16 ,  G01R31/367 ,  G01R31/382 ,  G01R31/396

    Abstract: A vehicle battery assessment system includes an information acquisition unit, a learned model acquisition unit, a remaining life assessment unit, and an assessment result output unit. The information acquisition unit acquires at least vehicle information of a vehicle installed with a battery and usage history information of the battery. The learned model acquisition unit acquires a learned model that is created in advance by setting at least the vehicle information of the vehicle and the usage history information of the battery as explanatory variables, and the remaining life of the battery as a target variable. The remaining life assessment unit assesses the remaining life of the battery based on the vehicle information and the usage history information acquired by the information acquisition unit and the learned model. The assessment result output unit outputs the assessment result of the remaining life assessment unit.

    SYSTEM FOR SETTING POWER SUPPLY OF REUSABLE SECONDARY CELL MODULE
    9.
    发明申请
    SYSTEM FOR SETTING POWER SUPPLY OF REUSABLE SECONDARY CELL MODULE 有权

    公开(公告)号：US20210339653A1

    公开(公告)日：2021-11-04

    申请号：US17377692

    申请日：2021-07-16

    Applicant: DENSO CORPORATION

    Inventor： Nobuo YAMAMOTO ,  Shuhei YOSHIDA ,  Katsuki HAYASHI ,  Takehiko YAMAKI ,  Hiroyasu SUZUKI ,  Yuya MINABE

    IPC: B60L58/22 ,  G01R31/392 ,  G01R31/396 ,  G01R31/367 ,  H01M10/48

    Abstract: In a system for setting power supply of reusable secondary cell modules, a degradation level estimation unit estimates a degradation level of a cell-module performance of each of a plurality of secondary cell modules, based on: the history information items about the respective the secondary cell modules acquired by a history information collection unit; and the cell-module performances of the respective secondary cell modules collected by a cell performance collection unit. A suppliable quantity prediction unit predicts a suppliable quantity of power of each of the plurality of secondary cell modules in accordance with the degradation level of the cell-module performance of a corresponding one of the plurality of secondary cell modules. A supply balance setting unit sets a power supply balance among the plurality of secondary cell modules based on the suppliable quantity of power of each of the plurality of secondary cell modules predicted by the prediction unit.

    DEGRADATION DEGREE ESTIMATION APPARATUS AND POWER SOURCE INCLUDING THE SAME
    10.
    发明申请
    DEGRADATION DEGREE ESTIMATION APPARATUS AND POWER SOURCE INCLUDING THE SAME 审中-公开

    公开(公告)号：US20200041576A1

    公开(公告)日：2020-02-06

    申请号：US16530640

    申请日：2019-08-02

    Applicant: DENSO CORPORATION

    Inventor： Yoshinori SATO ,  Shuhei YOSHIDA ,  Nobuo YAMAMOTO ,  Yuta SHIMONISHI

    IPC: G01R31/392 ,  G01R31/389 ,  G01R31/367

    Abstract: An apparatus for estimating a degradation degree of a secondary battery includes a pulse current applying unit that applies a pulse current; a voltage acquiring unit that acquires a charge voltage and a discharge voltage which are produced at the secondary battery by applying the pulse current; a relative value calculation unit that calculates a relative value between the charge voltage and the discharge voltage; a correlation storage unit that stores a correlation between a relative value between the charge voltage and the discharge voltage, and a degradation degree of the secondary battery; and a degradation degree estimation unit that obtains a degradation degree of the secondary battery from the correlation storage unit, based on the relative value calculated by the relative value calculation unit.

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