US 12,456,740 B2
Methods and systems for estimating parameters of a cell at various charge-discharge profiles
Anshul Kaushik, Bengaluru (IN); Atanu Talukdar, Bengaluru (IN); Rajkumar Subhash Patil, Bengaluru (IN); Shashishekara Parampalli Adiga, Bengaluru (IN); and Daebong Jung, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 12, 2021, as Appl. No. 17/318,169.
Claims priority of application No. 202041020057 (IN), filed on May 12, 2020; application No. 202041020057 (IN), filed on May 11, 2021; and application No. 10-2021-0061357 (KR), filed on May 12, 2021.
Prior Publication US 2021/0359317 A1, Nov. 18, 2021
Int. Cl. H01M 10/48 (2006.01); H01M 8/04537 (2016.01); H01M 8/0662 (2016.01)
CPC H01M 8/04641 (2013.01) [H01M 8/0687 (2013.01); H01M 2250/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for estimating a plurality of parameters pertaining to an electrochemical model of a cell of a battery comprising lithium-ion, the method comprising:
obtaining, by a device, a combination of an Electrochemical Impedance Spectroscopy (EIS) spectrum and a Constant Current-Constant Voltage (CC-CV) charge-Constant Current (CC) discharge response of the cell;
extracting, by the device, a plurality of features from the EIS spectrum and a plurality of features from the CC-CV charge-CC discharge response of the cell; and
estimating, by the device, the plurality of parameters of the electrochemical model based on at least one of the plurality of features of the EIS spectrum and at least one of the plurality of features of the CC-CV charge-CC discharge response of the cell.