Title:
BATTERY MANAGEMENT SYSTEM, BATTERY PACK, ELECTRIC VEHICLE, AND BATTERY MANAGEMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2023/008883
Kind Code:
A1
Abstract:
A battery management system, according to the present invention, comprises: a battery monitor; a balancer; and a control circuit for controlling the balancer. The control circuit: determines first voltage values representing the respective no-load voltages of batteries; compensates for the first voltage values of the batteries by using the respective balancing capacities of the batteries which are based on a balancing treatment carried out during a recent reference time; determines voltage deviations which are the respective differences between the compensated first voltage values of the batteries and a reference voltage value; and may detect an internal short circuit fault in each of the batteries by comparing variations in the respective voltage deviations of the batteries during the reference time with a threshold value.
Inventors:
PARK HEE-JU (KR)
KIM CHEOL-TAEK (KR)
SUNG YONG-CHUL (KR)
KIM CHEOL-TAEK (KR)
SUNG YONG-CHUL (KR)
Application Number:
PCT/KR2022/010982
Publication Date:
February 02, 2023
Filing Date:
July 26, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01R31/392; G01R19/00; G01R19/10; G01R19/165; G01R31/36; G01R31/382; G01R31/52; H02J7/00
Foreign References:
| KR20140113401A | 2014-09-24 | |||
| KR20210031172A | 2021-03-19 | |||
| US20190277923A1 | 2019-09-12 | |||
| KR101946288B1 | 2019-05-02 | |||
| KR101629648B1 | 2016-06-13 | |||
| KR20210098141A | 2021-08-10 |
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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