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    SYSTEM OF ESTIMATING RESIDUAL CAPACITY OF ENERGY STORAGE SYSTEM (ESS) AND METHOD THEREOF
    36.
    发明公开
    SYSTEM OF ESTIMATING RESIDUAL CAPACITY OF ENERGY STORAGE SYSTEM (ESS) AND METHOD THEREOF 审中-公开

    公开(公告)号：EP4283757A1

    公开(公告)日：2023-11-29

    申请号：EP22878898.0

    申请日：2022-10-05

    申请人： LG Energy Solution, Ltd.

    发明人： LEE, Chung-Yong

    IPC分类号： H01M10/48 ,  H01M10/44 ,  H01M10/42 ,  G01R31/382 ,  G01R31/392 ,  G01R31/36 ,  G01R31/396

    摘要： Disclosed is a system and method for estimating a residual capacity of an Energy Storage System (ESS). The system according to the present disclosure includes an ESS controller operably coupled to the ESS including a plurality of battery racks and rack controllers. The ESS controller is configured to acquire a state of charge (SOC) of the battery rack from the rack controller, determine an actual usage pattern of the ESS indicating a change in SOC of the ESS for each reference time period, determine a first ESS residual capacity at End of Life (EOL) by applying an average of the actual usage patterns over a whole period of an EOL lifespan, and record a first deviation between the first ESS residual capacity and a reference residual capacity.

    METHOD FOR ESTIMATING STATE OF HEALTH OF LITHIUM-SULFUR BATTERY
    39.
    发明公开
    METHOD FOR ESTIMATING STATE OF HEALTH OF LITHIUM-SULFUR BATTERY 审中-公开

    公开(公告)号：EP4266069A1

    公开(公告)日：2023-10-25

    申请号：EP22896163.7

    申请日：2022-11-21

    申请人： LG Energy Solution, Ltd.

    发明人： AHN, Jihoon ,  KIM, Bong Soo ,  HAN, Dong Hyeop

    IPC分类号： G01R31/392 ,  G01R31/382 ,  G01R31/367 ,  H02J7/00 ,  H01M10/052

    摘要： The present invention provides a method of estimating a state of health (SoH) of a lithium-sulfur battery, including the steps of: a) maintaining a state of health confirmation target battery in a rest state for 0.01 seconds or more in a state in which the state of health confirmation target battery is fully charged; b) measuring OCV (det) in a state in which a voltage drop is made during the rest state; c) calculating ΔOCV by subtracting OCV (det) from OCV (ini) previously measured in the same manner as in steps a) and b) at an initial stage of use of the state of health confirmation target battery; and d) estimating a state of health (%) of the battery from a magnitude of the ΔOCV.