Fig. 7From: State-of-health estimation of lithium-ion batteries based on electrochemical impedance spectroscopy: a reviewCopyright 2020, Elsevier LtdFlow chart of SOH estimation based on FIM. a Simplified equivalent circuit based on the lithium-ion battery EIS and HPPC test. b Flow chart for parameter identification. c Internal parameter identification for batteries with different SOH. d SOH estimation based on BPNN. Reprinted with permission from [96].Back to article page