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.

公开(公告)号：US20230140727A1

公开(公告)日：2023-05-04

申请号：US17968348

申请日：2022-10-18

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Subramanian Brahmadathan Swernath ,  Krishnan Seethalakshmy Hariharan ,  Samarth Agarwal ,  Seongho Han

IPC: G01R31/392 ,  G01R31/367 ,  G01R31/385 ,  G01R31/396

Abstract: An electronic device, including a memory; a processor; and a remaining useful life (RUL) prediction controller configured to: identify at least one parameter corresponding to at least one of a physical composition and a chemical composition of a plurality of used batteries during at least one of a charging and a discharging of the plurality of used batteries; determine a pattern of variations in at least one of a voltage, a current, a temperature, and a resistance during every cycle of the charging and the discharging of the plurality of used batteries until a failure; generate an artificial intelligence (AI) model which is trained based on a correlation between the determined pattern of variations and the at least one of the physical composition and the chemical composition; and evaluate a RUL of the plurality of used batteries using the AI model.

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：US11927640B2

公开(公告)日：2024-03-12

申请号：US16973117

申请日：2019-06-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seongho Han ,  Bookeun Oh ,  Gilho Kim ,  Junyoung Oh ,  Sungun Wi ,  Jaeyeon Lee

IPC: G01R31/367 ,  G01R31/371 ,  G01R31/382 ,  G06N20/00

CPC classification number: G01R31/367 ,  G01R31/371 ,  G01R31/382 ,  G06N20/00

Abstract: An electronic device according to various embodiments of the present invention includes: a memory which stores one or more mapping parameters that indicate the correlation between a voltage change amount and the state of health (SOH) of the battery; and a processor, wherein the processor can be set to: detect that an external device for charging the battery is connected to the electronic device; charge the battery by using a charging current supplied from the external device; decide on at least one mapping parameter among the one or more mapping parameters on the basis of at least the charging current; check the voltage change amount of the battery while the battery is being charged; and acquire the SOH of the battery at least partially on the basis of the at least one mapping parameter and the voltage change amount.

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.