公开(公告)号：US20210247460A1

公开(公告)日：2021-08-12

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 ,  G01R31/3842 ,  G01R31/374

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：US20210288353A1

公开(公告)日：2021-09-16

申请号：US17196094

申请日：2021-03-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Manohar GOTTAPU ,  Arijit GUHA ,  Shashishekara Parampalli ADIGA ,  Daehyun KIM ,  Taedong GOH ,  Youngho RYU

IPC: H01M10/42 ,  H01M10/48 ,  G01R31/3842 ,  G01R31/367 ,  H01M10/44

Abstract: Methods and electronic devices for estimating state of charge (SOC) of a battery pack. Various embodiments provide a model comprising an (electrical) equivalent circuit model, an electrochemical (thermal) model, and a (convective) thermal model. The model estimates parameters pertaining to each cell of the battery pack individually, and determines the variations in the values of the parameters among each of the cells of the battery pack. The parameters include capacity, temperature current, voltage, and SOC. The parameters are computed based on at current drawn by the battery pack, electrochemical parameters, thermal parameters, and cell internal and connection resistances of the individual cells. Various embodiments compute battery pack uptime, chargeable capacity of the battery pack and SOC of the battery pack, based on the values of the parameters.