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    SECONDARY CELL STATE DIAGNOSIS METHOD, AND STATE DIAGNOSIS DEVICE
    1.
    发明公开
    SECONDARY CELL STATE DIAGNOSIS METHOD, AND STATE DIAGNOSIS DEVICE 审中-公开

    公开(公告)号：EP4439102A1

    公开(公告)日：2024-10-02

    申请号：EP22898284.9

    申请日：2022-10-20

    Applicant: Hitachi, Ltd.

    Inventor： HONKURA, Kohei ,  NISHIJIMA, Shun

    IPC: G01R31/392 ,  G01R31/378 ,  G01R31/389 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00

    CPC classification number: Y02E60/10 ,  G01R31/367 ,  G01R31/378 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00

    Abstract: The present invention provides a secondary cell state diagnosis method and a secondary cell state diagnosis device that, even in a case where an active material having a potential that hardly changes in response to a change in a state of charge is used for the electrodes of a secondary cell, enable diagnosis of the deterioration of a secondary cell or each electrode. The secondary cell state diagnosis method includes evaluating, for one electrode of a positive electrode and a negative electrode, a deterioration state of the electrode on the basis of the relationship between a state of charge and an open-circuit potential of the positive electrode and the negative electrode and the relationship between a state of charge and an open-circuit voltage of the secondary cell; and evaluating, for the other electrode of the positive electrode and the negative electrode, the deterioration state of the electrode on the basis of the relationship between the state of charge and an internal resistance of the positive electrode and the negative electrode and the relationship between the state of charge and an internal resistance of the secondary cell. The secondary cell state diagnosis device includes an arithmetic unit that reads data indicating the relationship between a state of charge and an open-circuit voltage of the secondary cell and data indicating the relationship between the state of charge and an internal resistance of the secondary cell, and that evaluates a deterioration state of an electrode; and a storage unit that stores data indicating the relationship between a state of charge and an open-circuit voltage of a positive electrode and a negative electrode, and data indicating the relationship between the state of charge and an internal resistance of the positive electrode and the negative electrode.

    METHOD AND SYSTEM FOR DETERMINING STATE OF CHARGE, AND BATTERY SYSTEM
    5.
    发明公开
    METHOD AND SYSTEM FOR DETERMINING STATE OF CHARGE, AND BATTERY SYSTEM 审中-实审

    公开(公告)号：EP4375686A1

    公开(公告)日：2024-05-29

    申请号：EP23211402.5

    申请日：2023-11-22

    Applicant: Samsung SDI Co., Ltd.

    Inventor： Ha, Sangmin

    IPC: G01R31/382 ,  G01R31/3842 ,  G01R31/396

    CPC classification number: G01R31/382 ,  G01R31/3842 ,  G01R31/396

    Abstract: A method for determining a state of charge of a battery system (10) may include calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point, for each of a plurality of cells included in a battery module (11), selecting a cell having a maximum voltage difference among the plurality of cells as a representative cell, and estimating a state of charge, SOC, of the battery module (11) by using a cell voltage of the representative cell.

    VERFAHREN ZUR BESTIMMUNG DER ALTERUNG EINES ELEKTROCHEMISCHEN SPEICHERS
    8.
    发明公开
    VERFAHREN ZUR BESTIMMUNG DER ALTERUNG EINES ELEKTROCHEMISCHEN SPEICHERS 有权

    公开(公告)号：EP3391067A1

    公开(公告)日：2018-10-24

    申请号：EP16815754.3

    申请日：2016-12-06

    Applicant: Siemens Aktiengesellschaft

    Inventor： BETZIN, Christopher ,  WOLFSCHMIDT, Holger

    IPC: G01R31/36

    CPC classification number: G01R31/392 ,  G01R31/3842 ,  G01R31/389 ,  H01M10/48

    Abstract: The invention relates to a method for determining the ageing S0H of an electrochemical storage means, comprising the following steps: determining a first voltammogram (11, 12) by means of a cyclic voltammetry at a first time; determining a second voltammogram (21, 22) by means of a further cyclic voltammetry at a second time that is later in relation to the first time; determining a first extreme value (41) in the first voltammogram (11, 12) and a second extreme value (42) in the second voltammogram (21, 22), wherein at least one voltage U
    1 , U
    2 and a current strength I
    1 , I
    2 belongs to each extreme value (41, 42); and determining the ageing S0H of the electrochemical storage means in accordance with a different between the first and second extreme value (41, 42).

    APPARATUS AND METHOD FOR SENSING OPENING OF CURRENT INTERRUPT DEVICE OF BATTERY UNIT
    10.
    发明公开
    APPARATUS AND METHOD FOR SENSING OPENING OF CURRENT INTERRUPT DEVICE OF BATTERY UNIT 有权
    用于感测电池单元的电流中断装置的开路的装置和方法

    公开(公告)号：EP3252914A1

    公开(公告)日：2017-12-06

    申请号：EP16743717.7

    申请日：2016-01-28

    Applicant: LG Chem, Ltd.

    Inventor： PARK, Mi So ,  PARK, Jongmin ,  LEE, Hyunchul

    IPC: H02J7/00 ,  G01R31/36

    CPC classification number: G01R19/16542 ,  G01R31/026 ,  G01R31/2827 ,  G01R31/36 ,  G01R31/3835 ,  G01R31/3842 ,  H01M10/482 ,  H02H3/04 ,  H02J7/00 ,  H02J7/0026

    Abstract: Disclosed are an apparatus and a method for sensing opening of a current interrupt device (CID) of a battery unit. An apparatus for sensing opening of a current interrupt device of a battery unit according to the present invention is configured to include: a setting unit setting a predetermined voltage section when discharge of one or more battery units starts; a measuring unit measuring a voltage section pass time which is the time when the one or more battery units pass through the predetermined voltage section for each battery unit; and a detecting unit detecting a battery unit in which the current interrupt device (CID) is opened among the one or more battery units and detecting the number of battery cells in which the CID is opened among one or more battery cells included in the battery unit in which the CID is opened based on the voltage section pass time for each battery unit.

    Abstract translation: 公开了一种用于感测电池单元的电流中断装置（CID）的打开的设备和方法。 根据本发明的用于感测电池单元的电流中断装置的断开的装置被配置为包括：设置单元，其在一个或多个电池单元的放电开始时设置预定的电压部分; 测量单元，测量电压部分通过时间，该时间是一个或多个电池单元通过每个电池单元的预定电压部分的时间; 以及检测单元，检测其中打开了所述一个或多个电池单元中的电流中断装置（CID）的电池单元，并且检测电池单元中包括的一个或多个电池单元中的其中打开CID的电池单元的数量 其中基于每个电池单元的电压部分通过时间打开CID。

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