公开(公告)号：US20200333377A1

公开(公告)日：2020-10-22

申请号：US16764020

申请日：2019-06-28

申请人： LG Chem, Ltd.

发明人： Young-Ho Kim ,  Min-Soo Choi

IPC分类号： G01R1/20 ,  G01R31/28 ,  G01R31/3842 ,  H01M10/48 ,  G01R19/165 ,  H02J7/00 ,  H03K17/0812

摘要： A battery management system, a battery pack including same and a method for determining a failure in a current detecting circuit. The system includes the current detecting circuit configured to detect a reference current representing a current flowing through a high current path of the battery pack, a bidirectional switch including a charging FET and a discharging FET installed on the high current path, and a control unit. The control unit detects a first voltage across the charging FET and a second voltage across the discharging FET while a first high level voltage is applied to a gate of the charging FET and a second high level voltage is applied to a gate of the discharging FET. The control unit determines a failure in the current detecting circuit based on at least one of the first voltage and the second voltage and the reference current.

公开(公告)号：US11415953B2

公开(公告)日：2022-08-16

申请号：US16313973

申请日：2018-01-24

申请人： LG Chem, Ltd.

发明人： Jang-Soo Ock ,  Young-Ho Kim

IPC分类号： G05B19/042 ,  H01M10/42 ,  H05K1/02 ,  H05K3/00 ,  G01R27/20 ,  B60L58/10 ,  B60L50/60 ,  B60K6/28 ,  B60R16/033

摘要： An apparatus and method for selecting a ground capacitor that is connected between a ground of a circuit board included in a battery pack and a vehicle chassis. The apparatus includes a checking module configured to check a ground location on the circuit board; a selecting module configured to select a reference location on the circuit board, based on the ground location checked by the checking module; a calculating module configured to calculate a distance from the reference location selected by the selecting module to a nearest ground location as a reference distance; a computing module configured to compute a reference frequency by using the reference distance calculated by the calculating module; and a choosing module configured to choose a recommended capacitor, based on the reference frequency computed by the computing module.

公开(公告)号：US11313882B2

公开(公告)日：2022-04-26

申请号：US16764020

申请日：2019-06-28

申请人： LG Chem, Ltd.

发明人： Young-Ho Kim ,  Min-Soo Choi

IPC分类号： G01R1/20 ,  G01R31/3842 ,  G01R31/28 ,  H01M10/48 ,  H03K17/0812 ,  H01M10/42 ,  H02J7/00 ,  G01R19/165

摘要： A battery management system, a battery pack including same and a method for determining a failure in a current detecting circuit. The system includes the current detecting circuit configured to detect a reference current representing a current flowing through a high current path of the battery pack, a bidirectional switch including a charging FET and a discharging FET installed on the high current path, and a control unit. The control unit detects a first voltage across the charging FET and a second voltage across the discharging FET while a first high level voltage is applied to a gate of the charging FET and a second high level voltage is applied to a gate of the discharging FET. The control unit determines a failure in the current detecting circuit based on at least one of the first voltage and the second voltage and the reference current.