公开(公告)号：US20240133971A1

公开(公告)日：2024-04-25

申请号：US18487624

申请日：2023-10-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sivagaminathan BALASUBRAMANIAN ,  Jinho KIM ,  Myeongjae LEE

IPC: G01R31/392 ,  G01R31/36 ,  G01R31/367 ,  G01R31/3835

CPC classification number: G01R31/392 ,  G01R31/3648 ,  G01R31/367 ,  G01R31/3835

Abstract: A method of estimating a short circuit resistance in a battery using open cell voltage (OCV) includes: determining a rest period OCV for a rest period of the battery; determining a no-short OCV of a no-short condition based on a predetermined parameter, a first state-of-health (SoH) parameter, and a first temperature of the battery; determining that an internal short is present in the battery based on the no-short OCV and the rest period OCV, and based thereon extending the rest period of the battery; determining an extended OCV of the battery for the extended rest period based on the predetermined parameter, a second SoH parameter, and a second temperature of the battery; and estimating the short circuit resistance based on the no-short OCV, the predetermined parameter, and the extended OCV.