公开(公告)号：US11543460B2

公开(公告)日：2023-01-03

申请号：US17018329

申请日：2020-09-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Samarth Agarwal ,  Subramanian Swernath Brahmadathan ,  Krishnan S Hariharan ,  Seongho Han ,  Anshul Kaushik ,  Rajkumar Subhash Patil

IPC: G01R31/392 ,  G01R31/36 ,  B60L3/00 ,  B60L58/16 ,  G01R31/371

Abstract: Provided are a battery state measuring method and battery management system, which predict a time point when charging capacity of a battery is to be relatively abruptly reduced. The battery state measuring method includes: monitoring a change of at least one precursor related to the charging capacity of the battery with respect to a number of charging cycles undergone by the battery; and predicting that an abrupt reduction in the charging capacity of the battery is imminent when the change of the at least one precursor follows at least one pre-configured pattern of the battery that has undergone a critical number of charging cycles.

公开(公告)号：US12044745B2

公开(公告)日：2024-07-23

申请号：US17846805

申请日：2022-06-22

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Deekshith Pathayappilly Krishnan ,  Krishnan S Hariharan ,  Samarth Agarwal ,  Subramanian Swernath Brahmadathan ,  Seongho Han

IPC: G01R31/392 ,  H02J7/00

CPC classification number: G01R31/392 ,  H02J7/0048 ,  H02J7/005

Abstract: A method for managing a battery includes obtaining a first plurality of battery parameters with respect to a first charging or discharging cycle of the battery; obtaining a second plurality of battery parameters with respect to a second charging or discharging cycle of the battery; determining a relative entropy by comparing the first plurality of battery parameters measured during the first charging or discharging cycle and the second plurality of battery parameters measured during the second charging or discharging cycle; and estimating a relative entropy value to predict a number of cycles after which a battery capacity is predicted to drop.

公开(公告)号：US11782096B2

公开(公告)日：2023-10-10

申请号：US17169402

申请日：2021-02-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Arijit Guha ,  Subramanian Swernath Brahmadathan ,  Krishnan S Hariharan ,  Piyush Tagade ,  Rajkumar Subhash Patil ,  Jeonghoon Jo

IPC: G01R31/392 ,  H01M10/42 ,  G01R31/374 ,  G01R31/3842

CPC classification number: G01R31/392 ,  G01R31/374 ,  G01R31/3842 ,  H01M10/425 ,  H01M2010/4271

Abstract: The present disclosure provides a method and a system for improving the state of health (SoH) of rechargeable batteries. The method comprises receiving a plurality of battery parameters during charging of a battery and estimating model parameters of the battery using a mathematical model. The method also comprises comparing the estimated model parameters of the battery and the received battery parameters to determine degradation parameters of the battery in real-time, determining new charging current profile of the battery based on the degradation parameters of the battery, and applying the determined new charging current profile to the battery for improving the SoH of the battery.