Title:
SHORT-CIRCUIT CURRENT PREDICTION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2023/054928
Kind Code:
A1
Abstract:
A short-circuit current prediction device and method according to an embodiment of the present invention derive an internal equivalent circuit for reflecting a short-circuit state in a DC circuit, derive a first equivalent circuit by considering the electrical characteristics of a battery, derive a second equivalent circuit by considering the electrical characteristics of a fuse, acquire, on the basis of the internal equivalent circuit, a short-circuit current prediction model by reflecting the first equivalent circuit and the second equivalent circuit, and predict a short-circuit current according to a battery voltage by using the short-circuit current prediction model, so as to reflect mechanical and chemical characteristics of a parallel-connected battery system, and enable prediction of a short-circuit current with high accuracy in units of battery module, rack, or system (bank) on the basis of previously acquired short-circuit occurrence experiment data, and thus are used in reducing the number of short-circuit occurrence experiments carried out during design of a battery protection device and in determining the maximum number of batteries connected in parallel during development of a battery system, so that a high-efficient and low-cost short-circuit current prediction device and method preventing delays of a development schedule can be provided.
Inventors:
MUN BYEONGHO (KR)
KONG SUNG SHIK (KR)
CHO HANGJIN (KR)
KONG SUNG SHIK (KR)
CHO HANGJIN (KR)
Application Number:
PCT/KR2022/013339
Publication Date:
April 06, 2023
Filing Date:
September 06, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01R31/367; G01R27/02; G01R27/26; G01R31/14; G01R31/382; G01R31/392; G01R31/396; G01R31/52; H02J7/00
Foreign References:
| KR101930647B1 | 2019-03-11 | |||
| CN111198327A | 2020-05-26 | |||
| KR20210054930A | 2021-05-14 | |||
| CN111257753A | 2020-06-09 | |||
| CN112147512A | 2020-12-29 | |||
| KR20210130860A | 2021-11-02 |
Attorney, Agent or Firm:
CHOI, Hee-Kyeong (KR)
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