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    BATTERY UNIT
    2.
    发明申请
    BATTERY UNIT 有权

    公开(公告)号：US20230090747A1

    公开(公告)日：2023-03-23

    申请号：US17818719

    申请日：2022-08-10

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Kazuki CHIBA ,  Masahiro OHTA

    IPC: G01R31/36 ,  G01R31/396 ,  G01R31/388 ,  G01R31/392

    Abstract: The battery unit includes: a battery module including a battery cell; a battery heat flow detector configured to detect a heat flow of the battery cell; a storage configured to store heat flow HF vs. state of charge SOC initial characteristics of the battery cell; and a battery state estimator configured to estimate a state of health SOH of the battery cell. The battery state estimator measures, during charge of the battery cell, HF vs. SOC present characteristics of the battery cell, based on the detected heat flow of the battery cell, and estimates a state of health SOH of the battery cell, from a ratio between a length mAh of a line segment between peaks of differential characteristics of the measured HF vs. SOC present characteristics and a length mAh of a line segment between peaks of differential characteristics of the stored HF vs. SOC initial characteristics.

    BATTERY UNIT
    3.
    发明申请
    BATTERY UNIT 有权

    公开(公告)号：US20220320615A1

    公开(公告)日：2022-10-06

    申请号：US17669369

    申请日：2022-02-11

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Masahiro OHTA ,  Kazuki CHIBA

    IPC: H01M10/48 ,  H01M10/6554 ,  H01M50/505 ,  G01R31/392

    Abstract: A battery unit includes at least one battery module that includes at least one battery cell, at least one battery heat flow detector that detects a heat flow of the at least one battery cell and the battery unit, at least one reference heat flow detector that detects a heat flow of the battery unit as a reference heat flow, and a battery state estimator that estimates a state of the at least one battery cell, based on a heat flow of the at least one battery cell given by subtracting the reference heat flow detected by the at least one reference heat flow detector from the heat flow detected by the at least one battery heat flow detector. The at least one reference heat flow detector is disposed in the battery unit at a location where temperature fluctuation is small and heat capacity is large.

    BATTERY UNIT
    5.
    发明公开
    BATTERY UNIT 审中-公开

    公开(公告)号：US20230266394A1

    公开(公告)日：2023-08-24

    申请号：US18065631

    申请日：2022-12-14

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Kazuki CHIBA ,  Toshiyuki ARIGA

    IPC: G01R31/374 ,  G01R31/3835 ,  G01R31/367 ,  G01R31/396 ,  H01M10/48 ,  H01M10/44

    CPC classification number: G01R31/374 ,  G01R31/3835 ,  G01R31/367 ,  G01R31/396 ,  H01M10/482 ,  H01M10/441 ,  H01M10/486 ,  H02J7/0048

    Abstract: A battery unit includes: a module including m cell groups that are connected in series and each include n cells connected in parallel; m voltage detectors; (m×(n−1)) heat flow detectors; a storage; and a state estimator. The storage stores a table map of OCV vs. SOC characteristics (A1) and a table map of HF vs. SOC characteristics (A2). For each of the m cell groups, the state estimator is configured to: determine, based on the (A2), a true SOC of (n−1) cells that corresponds to a heat flow detected; determine, based on the (A1), an OCV of the (n−1) cells that corresponds to the determined true SOC; calculates an OCV of a remaining cell from the determined OCV and a detected composite voltage; and determine, based on the (A1), a true SOC of the remaining cell that corresponds to the calculated OCV.

    BATTERY UNIT
    7.
    发明申请
    BATTERY UNIT 有权

    公开(公告)号：US20230091279A1

    公开(公告)日：2023-03-23

    申请号：US17818002

    申请日：2022-08-08

    Applicant: HONDA MOTOR CO., LTD.

    Inventor： Kazuki CHIBA ,  Masahiro OHTA

    IPC: G01R31/374 ,  H01M10/48 ,  H01M10/42 ,  H01M10/44 ,  G01R31/396 ,  G01R31/392 ,  G01R31/3842 ,  G01R31/367 ,  H02J7/00

    Abstract: The battery unit includes a storage configured to store (A1) and (A2) below, and a battery state estimator. (A1) : a table map OCV vs. SOC characteristics.
    (A2) : HF vs. SOC initial characteristics. The battery state estimator estimates, based on (A1), a start SOC corresponding to a detected OCV at a start of charge; measures HF vs. SOC present characteristics and detects a peak of differential characteristics of the measured HF vs. SOC present characteristics during the charge; determines a SOC at the detected peak as a SOC(HF) based on (A2); calculates a charge capacity from the start of the charge to detection of SOC the peak; calculates a SOC(OCV) based on the calculated charge capacity and the start SOC; and in a case where the SOC(OCV) deviates with respect to the SOC(HF) by an amount of deviation equal to or greater than a predetermined value, corrects (A1).

    SOLID ELECTROLYTE LAMINATED SHEET AND SOLID STATE BATTERY
    8.
    发明申请
    SOLID ELECTROLYTE LAMINATED SHEET AND SOLID STATE BATTERY 审中-公开

    公开(公告)号：US20200212500A1

    公开(公告)日：2020-07-02

    申请号：US16727887

    申请日：2019-12-26

    Applicant: Honda Motor Co.,Ltd.

    Inventor： Atsushi OGAWA ,  Ushio HARADA ,  Hiroto MAEYAMA ,  Toru SUKIGARA ,  Kazuki CHIBA

    IPC: H01M10/0585 ,  H01M2/16 ,  H01M10/0562

    Abstract: Provided is a solid electrolyte laminated sheet having a self-supporting property and capable of realizing a solid state battery having high output characteristics. A plurality of supports are used, a solid electrolyte is filled in each support to form a self-supporting sheet, and the self-supporting sheets are superimposed to form a solid electrolyte laminated sheet. Specifically, the solid electrolyte laminated sheet is configured by setting a layer of the solid electrolyte laminated sheet in contact with a positive electrode layer being the outermost layer as a self-supporting sheet in which a solid electrolyte resistant to oxidation is filled, and a layer in contact with a negative electrode layer being the opposite outermost layer as a self-supporting sheet in which a solid electrolyte resistant to reduction is filled.

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