公开(公告)号：US11442110B2

公开(公告)日：2022-09-13

申请号：US17165100

申请日：2021-02-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Atanu Talukdar ,  Anshul Kaushik ,  Arunava Naha ,  Shashishekara Parampalli Adiga

IPC: G01R31/392 ,  G01R31/389 ,  G01R31/371 ,  H02J7/00 ,  G01R31/367

Abstract: The present disclosure relates to a method and apparatus for accurately detecting an operating status of a battery in a battery system, where the method includes determining a charging profile of a battery in a battery system, identifying a constant voltage and a corresponding constant current in a charging cycle of the charging profile, estimating at least one of a decay constant or an internal resistance associated with the battery, using at least one of the constant voltage or the constant current, comparing the decay constant with a first threshold value or comparing the internal resistance with a second threshold value, and detecting an operating status of the battery to be faulty or healthy, based on the comparison.

公开(公告)号：US20210063490A1

公开(公告)日：2021-03-04

申请号：US17004407

申请日：2020-08-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Arunava Naha ,  Ashish Khandelwal ,  Krishnan S. Hariharan ,  Seongho Han

IPC: G01R31/367 ,  G01R31/392 ,  G01R31/389 ,  G01R31/374 ,  G01R31/382

Abstract: Provided are a method and system for determining State of Health (SOH) of a battery. The method includes: detecting a charging state of the battery that is being charged by a Constant Current (CC) or a Constant Voltage (CV); adding a low frequency current signal to the CC that is charging the battery to obtain a low frequency charging current, or adding a low frequency voltage signal to the CV, that is charging the battery to obtain a low frequency charging voltage; determining one or more parameters relating to the battery during the charging state of the battery; calculating an internal impedance and Open Circuit Voltage (OCV) values based on the one or more parameters; and determining SOH of the battery based on the calculated internal impedance and the OCV values.