公开(公告)号：US20230194620A1

公开(公告)日：2023-06-22

申请号：US17924282

申请日：2021-04-27

申请人： LG Energy Solution, Ltd.

发明人： Hyun-Jun Choi ,  Dae-Soo Kim ,  Young-Deok Kim ,  Bo-Mi Lim

IPC分类号： G01R31/392 ,  G01R31/367 ,  G01R31/388

CPC分类号： G01R31/392 ,  G01R31/367 ,  G01R31/388

摘要： An apparatus for diagnosing a state of a battery includes a profile obtaining unit configured to obtain a voltage profile of a battery for voltage and capacity of the battery, and a control unit configured to obtain a differential profile for the voltage and the capacity from the voltage profile, select a plurality of peaks included in a predetermined voltage section of the obtained differential profile, determine a first peak associated with a negative electrode and a second peak associated with a positive electrode among the plurality of selected peaks, compare the first peak and the second peak with a first reference peak and a second reference peak of a preset reference profile, respectively, and diagnose a state of the battery based on at least one of a efdifference between the first peak and the first reference peak or a efdifference between the second peak and the second reference peak.

公开(公告)号：US20240012058A1

公开(公告)日：2024-01-11

申请号：US18027835

申请日：2022-02-15

申请人： LG Energy Solution, Ltd.

发明人： Bo-Mi Lim

IPC分类号： G01R31/3835 ,  G01R31/392

CPC分类号： G01R31/3835 ,  G01R31/392

摘要： An apparatus for diagnosing a state of a battery includes a processor and memory having programmed thereon instructions that, when executed, are configured to cause the processor to obtain a plurality of differential profiles representing a corresponding relationship between a differential capacity representing a change rate of a capacity of a battery with respect to a voltage of the battery and the voltage; determine a target peak located in a predetermined voltage section in each of the plurality of differential profiles; compare a plurality of voltages of a plurality of target peaks with a plurality of voltages of a reference peaks preset to correspond to each of the plurality of target peaks, and diagnose a state of the battery based on the voltage comparison result.

公开(公告)号：US20230191942A1

公开(公告)日：2023-06-22

申请号：US17921397

申请日：2021-08-13

申请人： LG Energy Solution, Ltd.

发明人： A-Ming Cha ,  Yoon-Jung Bae ,  Dae-Soo Kim ,  Bo-Mi Lim ,  Hyun-Jun Choi

IPC分类号： B60L58/12 ,  H01M50/204 ,  G01R31/3842 ,  H01M10/42

CPC分类号： B60L58/12 ,  H01M50/204 ,  G01R31/3842 ,  H01M10/425 ,  H01M2010/4271 ,  B60L2240/547 ,  B60L2240/549

摘要： A battery management system includes a sensor to sense voltage and current of a battery, memory to store over-potential management information including reference peak and reference peak voltage values, and a controller to command constant-current charging using a maximum allowable C-rate to a charging circuit when the reference peak value is equal to or larger than a threshold peak value, in response to a charge request, determine a differential capacity curve indicating a correlation between the voltage and differential capacity of the battery within a range based on the sensed voltage and current during the charging, determine main peak and main peak voltage values indicating differential capacity and voltage of a peak of the differential capacity curve, respectively. and update the reference peak and reference peak voltage values to equal the main peak and main peak voltage values, when the main peak value is less than the threshold peak value.

公开(公告)号：US20220271361A1

公开(公告)日：2022-08-25

申请号：US17631215

申请日：2020-07-10

申请人： LG Energy Solution, Ltd.

发明人： Bo-Mi Lim

IPC分类号： H01M10/63 ,  H01M10/613 ,  H01M10/6563

摘要： Provided are a battery temperature control apparatus, a battery temperature control method and a battery system. The battery temperature control apparatus includes first to nth cooling fans provided in a one-to-one relationship to first to nth battery modules connected in series, first to nth slave management units provided to the first to nth battery modules in a one-to-one relationship, and a master management unit. n is a natural number of 2 or greater. The master management unit determines battery temperature information including first to nth temperature values and a first reference value. The first to nth temperature values indicate temperatures of the first to nth battery modules. The first reference value is an average or a median of the first to nth temperature values. The master management unit controls a rotation speed of each cooling fan based on the battery temperature information.