公开(公告)号：US20230073869A1

公开(公告)日：2023-03-09

申请号：US17826620

申请日：2022-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JINHO KIM ,  TAE WON SONG ,  YOUNG HUN SUNG

IPC: G01R31/367 ,  G01R31/3842 ,  H01M10/48 ,  H01M10/42

Abstract: An electronic device for estimating a battery state and an operating method thereof are disclosed. The electronic device including a temperature sensor configured to measure a temperature of the battery, a current sensor configured to measure a current of the battery, a voltage sensor configured to measure a voltage of the battery, and a processor configured to estimate a temperature profile of the battery based on the temperature and the current of the battery and a battery model, determine an overvoltage profile of the battery based on the temperature profile, revise the overvoltage profile based on a current state of charge (SOC) and the voltage of the battery, and estimate an unusable SOC of the battery based on the revised overvoltage profile and an open circuit voltage (OCV) profile of the battery.

公开(公告)号：US20230184845A1

公开(公告)日：2023-06-15

申请号：US17826958

申请日：2022-05-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： JU WAN LIM ,  JINHO KIM ,  Myeongjae Lee ,  YOUNG HUN SUNG ,  DUK JIN OH

IPC: G01R31/392 ,  G01R31/52 ,  G01R31/367 ,  B60L58/10

CPC classification number: G01R31/392 ,  G01R31/52 ,  G01R31/367 ,  B60L58/10

Abstract: A method and apparatus for detecting an internal short circuit in a battery are provided. The method includes acquiring values of one or more basic parameters of the battery, acquiring values of one or more degradation parameters used in a battery model indicating an internal state of the battery based on the values of the one or more basic parameters, determining whether the internal short circuit occurs in the battery based on a first value of a first degradation parameter and a second value of a second degradation parameter from among the one or more degradation parameters, and performing an operation in response to the internal short circuit occurring in the battery.

公开(公告)号：US20230160965A1

公开(公告)日：2023-05-25

申请号：US17720971

申请日：2022-04-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： JINHO KIM ,  TAE WON SONG ,  YOUNG HUN SUNG

IPC: G01R31/3835 ,  H01M10/48 ,  G01R31/392

CPC classification number: G01R31/3835 ,  H01M10/482 ,  G01R31/392

Abstract: Disclosed are an electronic device, including a memory configured to store parameters of an electrochemical model corresponding to a battery, a sensor configured to measure a voltage of the battery, and a processor configured to determine a first cumulative state of charge (SOC) correction amount at a partially discharged point in time at which a SOC of the battery is corrected by a corrector for reducing a voltage difference between an estimated voltage of the electrochemical model and the measured voltage of the battery, estimate a second cumulative SOC correction amount at a fully discharged point in time based on the first cumulative SOC correction amount and a SOC correction amount prediction curve, and update an aging parameter of the electrochemical model based on the second cumulative SOC correction amount.