公开(公告)号：US20250004064A1

公开(公告)日：2025-01-02

申请号：US18743850

申请日：2024-06-14

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/389 ,  G01R31/367 ,  G01R31/371 ,  G01R31/52 ,  H02J7/00

Abstract: A processor-implemented method includes monitoring a plurality of direct current (DC) resistance values of a battery for a predefined time period during one of a constant power charging or discharging window of the battery, determining the plurality of DC resistance values of the battery at a plurality of timestamps corresponding to the predefined time period, determining a deviation of the determined plurality of DC resistance values by comparing the determined plurality of DC resistance values with a plurality of predefined DC resistance values associated with a reference battery, detecting a persistent short circuit in the battery in response to the determined deviation of the determined plurality of DC resistance values being greater than a threshold value, and estimating, in response to detecting the persistent short circuit in the battery, a short resistance of the battery based on a value of power supply in the constant power charging or discharging window and a magnitude of the determined deviation of the determined plurality of DC resistance values with respect to the plurality of predefined DC resistance values.

公开(公告)号：US20230152383A1

公开(公告)日：2023-05-18

申请号：US17950426

申请日：2022-09-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sagar BHARATHRAJ ,  Myeongjae LEE ,  Shashishekara Parampalli ADIGA ,  Tae Won SONG ,  Young Hun SUNG

IPC: G01R31/389 ,  H02J7/00 ,  G01R31/396 ,  G01R31/3842

CPC classification number: G01R31/389 ,  H02J7/0047 ,  G01R31/396 ,  G01R31/3842

Abstract: A processor-implemented method of a battery management system includes: determining one or more pieces of sampling data from a plurality of pieces of battery usage data of a battery; determining a first short fatigue metric (SFM) score based on the determined one or more pieces of sampling data; and storing the first SFM score, wherein the one or more pieces of sampling data comprises any one or any combination of any two or more of: a high charging profile associated with the battery; a high discharging profile associated with the battery; a partial charging profile associated with the battery; and a partial discharging profile associated with the battery.

公开(公告)号：US20240044991A1

公开(公告)日：2024-02-08

申请号：US18344222

申请日：2023-06-29

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/389 ,  G01R31/392 ,  G01R31/367 ,  G01R31/36

CPC classification number: G01R31/389 ,  G01R31/392 ,  G01R31/367 ,  G01R31/3648

Abstract: A method and electronic device with battery state detection are provided. The method includes generating relative cumulative cell resistance (RCCR) curve information of a target battery based on constant voltage (CV) phase data of the target battery recorded during a charging operation of the target battery; and generating at least one of aging or shorting condition information of the target battery based on the generated RCCR curve information.

公开(公告)号：US20230384382A1

公开(公告)日：2023-11-30

申请号：US18319116

申请日：2023-05-17

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/367 ,  G01R31/392 ,  G01R31/388

CPC classification number: G01R31/367 ,  G01R31/392 ,  G01R31/388

Abstract: Methods and an electronic devices for estimating battery parameters, where the method of estimating battery parameters performed by a processor includes determining whether a diffusion length of an intercalation material in an electrode of a battery is lesser than a threshold, calculating a concentration of the intercalation material in the electrode based on a result of the determination, and estimating at least one battery parameter of the battery parameters based on the concentration of the intercalation material.

公开(公告)号：US20220074995A1

公开(公告)日：2022-03-10

申请号：US17463841

申请日：2021-09-01

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sagar BHARATHRAJ ,  Anshul KAUSHIK ,  Rajkumar Subhash PATIL ,  Shashishekara Parampalli ADIGA ,  Tae Won SONG

IPC: G01R31/367 ,  B60L58/16 ,  B60L58/12 ,  G01R31/371 ,  G01R31/382 ,  G01R31/392

Abstract: A battery management method and system are provided. The method includes acquiring one or more parameters associated with the battery. The one or more parameters includes a current level, a voltage level, a State of Charge (SOC), and a temperature. The method includes determining a load and energy estimation model based on the one or more acquired parameters. The method includes identifying a power limit of the battery based on the load and energy estimation model. The method includes determining a power margin of the battery at a first usage time interval based on the identified power limit. The method includes performing one or more actions, based on a determination that the power margin of the battery exceeds a predefined threshold level.

公开(公告)号：US20250067815A1

公开(公告)日：2025-02-27

申请号：US18797418

申请日：2024-08-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/52 ,  G01R31/378 ,  G01R31/3835 ,  H01M10/42

Abstract: Provided is a method of estimating a short resistance of a target battery associated with a battery-driven device. The method includes: determining voltage values of the target battery within a time period during a charging or discharging state of the target battery, wherein the time period is associated with a constant resistance value within the target battery; comparing the voltage values with reference voltage values associated with a reference battery; based on the comparing, determining, for the pre-defined time period, a magnitude of a voltage deviation of the target battery with respect to the reference battery; detecting a short circuit in the target battery based on the determined magnitude of the voltage deviation; and estimating the short resistance associated with the short circuit of the target battery based on the constant resistance value and the magnitude of the voltage deviation.

公开(公告)号：US20250020725A1

公开(公告)日：2025-01-16

申请号：US18766999

申请日：2024-07-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/3842 ,  G01R31/367

Abstract: A processor-implemented method including generating a voltage slope based on monitored cell voltage and current data of a battery, the cell voltage and current data being taken during a charging window or discharging window of the battery, determining a change in a sign of the voltage slope by comparing the voltage slope with a reference voltage slope of a reference battery, determining, based on the change in the sign of the voltage slope, a deviation in a magnitude of the voltage slope by comparing the magnitude of the voltage slope with a preset magnitude of the reference voltage slope, and detecting an intermittent short in the battery based on a determination that a deviation in the magnitude of the voltage slope is greater than a preset threshold value.

公开(公告)号：US20230400525A1

公开(公告)日：2023-12-14

申请号：US18308541

申请日：2023-04-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/388 ,  G01R31/367 ,  G01R31/389 ,  G01R31/392 ,  G01R31/36

CPC classification number: G01R31/388 ,  G01R31/367 ,  G01R31/389 ,  G01R31/392 ,  G01R31/3648

Abstract: The following description relates to a method and system with battery parameter estimation for a rest period. A method of estimating a battery parameter of a battery for a rest period of the battery includes: based on determining that an intercalation flux of the battery satisfies a predetermined condition, calculating an open circuit voltage (OCV) of the battery, wherein the OCV is calculated based on an initial voltage, a first time constant corresponding to a positive electrode of the battery, a second time constant corresponding to a negative electrode of the battery, a first constant, a second constant, and a value of a time variable for the rest period; and estimating the battery parameter based on the calculated OCV of the battery.

公开(公告)号：US20230384389A1

公开(公告)日：2023-11-30

申请号：US18074969

申请日：2022-12-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/389 ,  G01R31/3842 ,  H01M10/48

CPC classification number: G01R31/389 ,  G01R31/3842 ,  H01M10/48

Abstract: Provided are a method and device with battery short circuit detection. A method of detecting a short circuit in a battery includes: triggering a rest phase of the battery, determining a first time constant related to a rest voltage of the battery when the battery may be in the rest phase, estimating a first short-resistance value by comparing the first time constant with a second time constant related to a voltage of the battery, and making a short circuit determination for the battery based on a result of comparing the first short-resistance value and a second short-resistance value, wherein the first time constant and the second time constant may be determined with reference to either a temperature range or a charging range of the electronic device.

公开(公告)号：US20220342002A1

公开(公告)日：2022-10-27

申请号：US17723917

申请日：2022-04-19

Applicant: Samsung Electronics Co., Ltd.

Inventor： Sagar BHARATHRAJ ,  Shashishekara Parampalli ADIGA

IPC: G01R31/392 ,  G01R31/388 ,  H02J7/00 ,  H01M10/44

Abstract: A method and apparatus for determining safety of a battery are disclosed, where the method includes identifying a charge state or a discharge state of the battery, activating pulse probe currents at different depths of charge or discharge (charge/discharge) of the battery, in response to identifying the charge or discharge state of the battery, and detecting and differentiating between a state of short (SOS) and a state of health (SOH) of the battery based on variations of the pulse probe currents as a function of the depths of charge/discharge.