US 12,345,773 B2
System for estimating the state of health (SOH) of battery, system and method for deriving parameters therefor
Eunseok Lee, Daegu (KR)
Assigned to HEI, Busan (KR)
Filed by HEI, Busan (KR)
Filed on Apr. 26, 2023, as Appl. No. 18/307,621.
Application 18/307,621 is a continuation in part of application No. PCT/KR2022/017998, filed on Nov. 15, 2022.
Claims priority of application No. 10-2021-0156405 (KR), filed on Nov. 15, 2021.
Prior Publication US 2023/0258734 A1, Aug. 17, 2023
Int. Cl. G01R 31/392 (2019.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01)
CPC G01R 31/392 (2019.01) [G01R 31/367 (2019.01); G01R 31/3842 (2019.01)] 14 Claims
OG exemplary drawing
 
1. A system for measuring a state of health (SOH) of batteries, comprising:
a database that receives and stores current data or voltage data, wherein at least a portion of the current data and the voltage data has been measured at a predetermined sampling rate in a non-equilibrium steady state during battery charging;
a parameter processing module that obtains a frequency-domain response function based on Generalized Fluctuation-Dissipation Theorem (GFDT) using current fluctuation data or voltage fluctuation data for the non-equilibrium steady state and obtains at least one parameter associated with the SOH of a battery based on the obtained response function;
an SOH calculation module that obtains the SOH of the battery based on said at least one parameter.