公开(公告)号：US20230145693A1

公开(公告)日：2023-05-11

申请号：US17555223

申请日：2021-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Changyong JU ,  Sungeun BANG

IPC: G01R31/392 ,  H01M10/44 ,  G01R31/3842 ,  H01M10/42

CPC classification number: G01R31/392 ,  H01M10/443 ,  G01R31/3842 ,  H01M10/425 ,  H01M2010/4271

Abstract: The energy storage system of the present disclosure includes: a battery configured to store a received electrical energy in a form of direct current or to output the stored electrical energy; and a battery management system configured to control the battery, wherein the battery management system includes: a sensing unit comprising a plurality of sensors for measuring voltage, current, and temperature of the battery; a memory configured to store a charge/discharge cycle count that is increased according to execution of charge/discharge cycle and a under voltage protection level which is a reference value of a under voltage protection that protects from discharging at a certain voltage or lower; and a microcomputer unit that increases the under voltage protection level, when the charge/discharge cycle count reaches a reference number of times.

公开(公告)号：US20230113916A1

公开(公告)日：2023-04-13

申请号：US17645271

申请日：2021-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Eunchul PARK ,  Sungeun BANG

IPC: H02J7/00 ,  H02J3/38 ,  H01M10/42 ,  H01M50/213 ,  H01M10/48 ,  H01M50/251 ,  G01R31/3842

Abstract: An energy storage system includes: a battery configured to at least store received electrical energy in a form of direct current, or output the stored electrical energy; a power conditioning system configured to convert an electrical characteristic to charge or discharge the battery; and a battery management system configured to monitor state information of the battery, wherein the battery includes a plurality of battery packs each including a respective plurality of battery cells, wherein the battery management system includes: battery pack circuit boards which are disposed in each of the plurality of battery packs, and configured to obtain state information of the plurality of battery cells included in each battery pack; and a main circuit board coupled to the battery pack circuit boards by a communication line, and configured to receive state information obtained by the battery pack circuit boards from each battery pack.

公开(公告)号：US20230116874A1

公开(公告)日：2023-04-13

申请号：US17546748

申请日：2021-12-09

Applicant: LG ELECTRONICS INC.

Inventor： Seongwoo CHOI ,  Sungeun BANG ,  Changhyeon SHIN

IPC: H01M50/517 ,  H01M50/507 ,  H01M50/242 ,  H01M50/213

Abstract: An energy storage system of the present disclosure includes: a first battery module in which a plurality of battery cells are disposed; a second battery module in which a plurality of battery cells are disposed, and which is disposed to face the first battery module; a module screw which extends in a front-rear direction in which the first battery module and the second battery module are disposed, and fastens the first battery module and the second battery module; an upper fixing bracket which is disposed in an upper side of the first battery module and the second battery module, and fixes the first battery module and the second battery module; and a lower fixing bracket which is disposed in a lower side of the first battery module and the second battery module, and fixes the first battery module and the second battery module.

公开(公告)号：US20230138447A1

公开(公告)日：2023-05-04

申请号：US17555239

申请日：2021-12-17

Applicant: LG ELECTRONICS INC.

Inventor： Seungtae KO ,  Sungeun BANG

IPC: H02J7/00 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/367 ,  G01R31/374 ,  G01K7/22

Abstract: An energy storage system of the present disclosure includes: a battery configured to store a received electrical energy in a form of direct current, or to output the stored electrical energy; and a battery management system configured to control the battery, wherein the battery management system includes: a sensing unit comprising a plurality of sensors for measuring voltage, current, and temperature of the battery; a memory configured to store an open circuit voltage table and an internal resistance table; and a microcomputer unit configured to determine an internal resistance of the battery from the internal resistance table by using data detected by the sensing unit, to calculate a battery real voltage reflecting a voltage drop due to the internal resistance of the battery, and to determine a state of charge (SOC) by using the battery real voltage.

公开(公告)号：US20230114398A1

公开(公告)日：2023-04-13

申请号：US17645268

申请日：2021-12-20

Applicant: LG ELECTRONICS INC.

Inventor： Injung JEON ,  Sungeun BANG

IPC: H02J7/00

Abstract: An energy storage system according to an embodiment of the present disclosure includes: a battery configured to at least store a received electrical energy in a form of direct current, or output the stored electrical energy; a power conditioning system configured to convert an electrical characteristic to charge or discharge the battery; and a battery management system configured to monitor state information of the battery, wherein based on a plurality of preset inputs being input to the battery management system, power is supplied to the power conditioning system, and based on a single preset input being input to the battery management system, power supply to the power conditioning system is blocked.