US 12,136,841 B2
Method and apparatus with battery short circuit detection
Myeongjae Lee, Seoul (KR); Ju Wan Lim, Suwon-si (KR); Duk Jin Oh, Seoul (KR); Jinho Kim, Yongin-si (KR); Young Hun Sung, Hwaseong-si (KR); and Daeryong Jung, Seoul (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd, Suwon-si (KR)
Filed on Jun. 8, 2021, as Appl. No. 17/341,561.
Claims priority of application No. 10-2020-0180676 (KR), filed on Dec. 22, 2020.
Prior Publication US 2022/0200293 A1, Jun. 23, 2022
Int. Cl. H02J 7/00 (2006.01); G01R 31/367 (2019.01); G01R 31/3835 (2019.01); G01R 31/392 (2019.01)
CPC H02J 7/005 (2020.01) [G01R 31/367 (2019.01); G01R 31/3835 (2019.01); G01R 31/392 (2019.01)] 18 Claims
OG exemplary drawing
 
1. A processor-implemented short circuit detection method, comprising:
obtaining, from a battery, battery data comprising a measured state of a charging cycle of the battery;
generating error information by applying of an estimation model to the battery data, wherein the error information corresponds to a difference between the battery data corresponding to a measured value and an estimated value of the estimation model;
performing an aging correction based on a first determined correlation between a state indicator corresponding to the generated error information and an aging threshold, and updating either one or both of the estimation model and the state indicator based on an aging state of the battery; and
detecting a short circuit of the battery based on a second determined correlation between a short circuit threshold and the state indicator,
wherein a sign of the short circuit threshold and a sign of the aging threshold are opposite signs, and
wherein the detecting of the short circuit improves micro-short-circuit (MSC) detection.