公开(公告)号：US10302704B2

公开(公告)日：2019-05-28

申请号：US15235663

申请日：2016-08-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Krishnan S Hariharan ,  Priya Gambhire ,  Tae Won Song

IPC: G01R31/36 ,  H01M10/48 ,  H01M10/42

Abstract: A method and apparatus for predicting a state of charge (SoC) of a battery includes estimating an open circuit voltage of the battery based on an open current voltage model, where the open current voltage model is defined by internal parameters that are derived from a battery voltage of the battery, a load current of the battery for a load, or a first SoC of the battery, or any combination thereof; and predicting a second SoC based on the estimated open current voltage.

公开(公告)号：US10459034B2

公开(公告)日：2019-10-29

申请号：US14757540

申请日：2015-12-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suman Basu ,  Krishnan S Hariharan ,  Taejun Yeo

IPC: G01R31/392 ,  G01R31/367

Abstract: A method and apparatus for estimating a state of health (SOH) of a battery are provided. The method includes measuring a voltage and a partial discharge time of the battery, acquiring a normalized partial discharge time using a battery model of a reference battery normalized with respect to a time, calculating a full discharge time of the battery based on the partial discharge time and the normalized partial discharge time, and estimating the SOH based on a ratio between a stored full discharge time of the reference battery and the full discharge time of the battery.

公开(公告)号：US10256515B2

公开(公告)日：2019-04-09

申请号：US15204227

申请日：2016-07-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Suman Basu ,  Krishnan S Hariharan ,  Nandhini Ganesan ,  Tae jung Yeo

IPC: H01M10/617 ,  H01M10/633 ,  H01M10/48 ,  F28D15/00 ,  B60L11/18

Abstract: A method and battery system for thermal management of a battery system includes predicting a total heat generation by a battery based on determined internal conditions of the battery, and controlling a selective adjusting of a heat transfer coefficient for the battery based on the predicted total heat generation to maintain an operating temperature of the battery at a target temperature or within a target temperature range.

公开(公告)号：US12184099B2

公开(公告)日：2024-12-31

申请号：US17402875

申请日：2021-08-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Shashishekara Parampalli Adiga ,  Mohan Kumar Singh Verma ,  Ashish Khandelwal ,  Krishnan S Hariharan ,  Rajkumar Subhash Patil ,  Subramanya Mayya Kolake

IPC: H02J7/00

Abstract: Disclosed are methods and apparatuses for charging a hybrid battery pack, the method including determining, by a battery management system (BMS), a current split ratio for allocating charging current to an energy cell and a power cell in a hybrid battery pack, based on any one or any combination of a state of charge (SoC) level of the energy cell at an instance of initiation of charging, a SoC level of the power cell at the instance of the initiation of the charging, a wattage of an adapter for charging the hybrid battery pack, a capacity of the hybrid battery pack, and a charging time period, and charging, by the BMS, the hybrid battery pack by allocating the charging current to the energy cell and the power cell based on the current split ratio.

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.

公开(公告)号：US10006967B2

公开(公告)日：2018-06-26

申请号：US15295056

申请日：2016-10-17

Applicant: Samsung Electronics Co., Ltd.

Inventor： Nandhini Ganesan ,  Suman Basu ,  Krishnan S Hariharan ,  Tae Won Song

IPC: G08B21/00 ,  G01R31/36 ,  H02J7/00 ,  G08B21/18 ,  G08B31/00

CPC classification number: G01R31/392 ,  G01R31/3646 ,  G01R31/367 ,  G01R31/396 ,  G08B21/182 ,  G08B31/00 ,  H02J7/0021

Abstract: A method for predicting life of a reconfigurable battery pack, includes receiving a usage parameter of a reconfigurable battery pack, the battery pack comprising interconnected battery cells; identifying a State of Health (SOH) of degraded battery cells and a capacity of the reconfigurable battery pack; and determine a number of fresh battery cells to replace the degraded cells for the usage parameter based on the SOH and the capacity of the reconfigurable battery pack.