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    APPARATUS AND METHOD FOR ESTIMATING SOC OF SECONDARY BATTERY INCLUDING BLENDED CATHODE MATERIAL
    1.
    发明公开
    APPARATUS AND METHOD FOR ESTIMATING SOC OF SECONDARY BATTERY INCLUDING BLENDED CATHODE MATERIAL 审中-公开

    公开(公告)号：EP3901642A1

    公开(公告)日：2021-10-27

    申请号：EP21177664.6

    申请日：2013-03-15

    申请人： LG Chem, Ltd.

    发明人： JOE, Won-Tae ,  CHA, Sun-Young

    IPC分类号： G01R31/36 ,  H01M10/48 ,  H01M4/02 ,  H01M4/36 ,  G01R31/367 ,  G01R31/3835

    摘要： Disclosed is an apparatus for estimating a state of charge (SOC) of a secondary battery which includes (i) a cathode comprising a blended cathode material having a first cathode material and a second cathode material, wherein the first and second cathode materials have different operating voltage ranges; (ii) an anode comprising an anode material; and (iii) a separator for separating the cathode from the anode. The apparatus includes a sensor configured to measure a dynamic voltage of the secondary battery during charging of the secondary battery, and a control unit configured to identify a dynamic voltage profile of the secondary battery as a transition region voltage pattern, calculate a parameter of the transition region voltage pattern, and estimate a SOC of the secondary battery from the calculated parameter by using a predetermined relationship between the parameter and the SOC.

    METHOD, APPARATUS, AND RECORDING MEDIUM FOR ESTIMATING PARAMETER OF BATTERY EQUIVALENT CIRCUIT MODEL
    2.
    发明公开
    METHOD, APPARATUS, AND RECORDING MEDIUM FOR ESTIMATING PARAMETER OF BATTERY EQUIVALENT CIRCUIT MODEL 审中-公开

    公开(公告)号：EP3627167A1

    公开(公告)日：2020-03-25

    申请号：EP18872015.5

    申请日：2018-10-11

    申请人： LG Chem, Ltd.

    发明人： KIM, Young-Jin ,  CHA, Sun-Young

    IPC分类号： G01R31/36

    摘要： Disclosed is a method and apparatus for estimating parameters of a battery equivalent circuit model. The battery equivalent circuit model includes a first resistor, a second resistor and a capacitor. The method according to an embodiment of the present disclosure includes reading a pulse discharge profile corresponding to a parameter estimation condition from a plurality of pre-stored pulse discharge profiles, wherein the pulse discharge profile includes a first number of terminal voltages sequentially measured from a battery having a specific SOC in a predetermined cycle while the battery is discharged with a specific constant current from an OCV corresponding to the specific SOC to a lower limit of discharge voltage at a specific temperature, extracting a second number of terminal voltages between the OCV and a threshold voltage from the first number of terminal voltages, and estimating a resistance value of the first resistor and a resistance value of the second resistor based on the OCV, the constant current and the second number of terminal voltages.

    APPARATUS AND METHOD FOR ESTIMATING OUTPUT OF SECONDARY BATTERY INCLUDING BLENDED ANODE MATERIAL
    3.
    发明授权
    APPARATUS AND METHOD FOR ESTIMATING OUTPUT OF SECONDARY BATTERY INCLUDING BLENDED ANODE MATERIAL 有权
    用于估计包括混合阳极材料的二次电池输出的装置和方法

    公开(公告)号：EP2899795B1

    公开(公告)日：2018-01-03

    申请号：EP14760616.4

    申请日：2014-02-17

    申请人： LG Chem, Ltd.

    发明人： JOE, Won-Tae ,  CHA, Sun-Young

    IPC分类号： H01M4/36 ,  H01M10/48 ,  G01R31/36

    CPC分类号： G01R31/3624 ,  G01R31/3648 ,  G01R31/3662 ,  G01R31/3682 ,  H01M4/362 ,  H01M4/364 ,  H01M10/44 ,  H01M10/48

    摘要： Disclosed are an apparatus and method for estimating the power of a secondary battery including a blended cathode material. The apparatus according to the present disclosure includes a sensor configured to measure a discharge current of a secondary battery comprising a cathode including a blended cathode material, an anode, and a separator, the blended cathode material including at least a first cathode material and a second cathode material and an operating voltage range of the first cathode material being higher than an operating voltage range of the second cathode material, and a control unit configured to estimate a state of charge of the secondary battery, determine a discharge voltage of the secondary battery using a first resistance predefined corresponding to the state of charge under a first condition in which a magnitude of the discharge current is smaller than a magnitude of a critical current and a second resistance predefined corresponding to the state of charge under a second condition in which the magnitude of the discharge current is larger than the magnitude of the critical current, and determine the power of the secondary battery from the determined discharge voltage and the measured discharge current.

    BATTERY MANAGEMENT SYSTEM AND METHOD FOR OPTIMIZING INTERNAL RESISTANCE OF BATTERY
    5.
    发明公开
    BATTERY MANAGEMENT SYSTEM AND METHOD FOR OPTIMIZING INTERNAL RESISTANCE OF BATTERY 审中-公开

    公开(公告)号：EP3633782A1

    公开(公告)日：2020-04-08

    申请号：EP18898336.5

    申请日：2018-11-15

    申请人： LG CHEM, LTD.

    发明人： CHA, Sun-Young

    IPC分类号： H01M10/42 ,  H01M10/44 ,  G01R31/36 ,  G01R19/165

    摘要： A battery management system for optimizing the internal resistance of a battery includes a current measuring unit that measures a charge current of the battery, a memory that stores a plurality of voltage-current characteristic profiles, and a control unit that determines a reference profile from the plurality of voltage-current characteristic profiles based on a state of charge and temperature of the battery. The reference profile includes a start point, an end point, and a plurality of intermediate points disposed between the start point and the end point. The control unit determines an internal resistance of the battery, sets one of the plurality of intermediate points as a reference point, determines a reference resistance based on the reference point and the end point, and determines an optimal resistance based on the charge current, the internal resistance, the reference resistance and a predetermined upper limit of charge current.

    APPARATUS FOR ESTIMATING STATE-OF-CHARGE OF SECONDARY BATTERY AND METHOD THEREOF
    8.
    发明公开
    APPARATUS FOR ESTIMATING STATE-OF-CHARGE OF SECONDARY BATTERY AND METHOD THEREOF 审中-公开

    公开(公告)号：EP3623829A1

    公开(公告)日：2020-03-18

    申请号：EP18865431.3

    申请日：2018-09-19

    申请人： LG Chem, Ltd.

    发明人： KIM, Young-Jin ,  CHA, Sun-Young

    IPC分类号： G01R31/36

    摘要： Provided is an apparatus and method for estimating a state of charge of a secondary battery. The apparatus includes a sensor unit configured to measure a voltage and a current of the secondary battery in a predetermined cycle, and a control unit operably coupled to the sensor unit. The control unit is configured to estimate the state of charge of the secondary battery in the predetermined cycle based on the voltage and the current measured by the sensor unit. The control unit is further configured to determine an operating state of the secondary battery as any one of a linear operating state and a non-linear operating state based on a threshold voltage and the measured voltage, and then determine first process noise indicating inaccuracy of a current integration model and second process noise indicating inaccuracy of an equivalent circuit model according to the determined operating state.