Data-driven state of health estimation in retired battery based on low and medium-frequency electrochemical impedance spectroscopy

Wencan Zhang, Taotao Li,Weixiong Wu,Nan Ouyang,Guangshan Huang

Measurement（2023）

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摘要

•The physical effects of battery correlated equivalent circuit model parameters.•Low and medium-frequency EIS sensitive to battery aging.•Combined circuit parameters and gated recurrent unit to estimate battery SoH.•Considering the effect of ambient temperature and SoC on EIS.

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关键词

Retired lithium-ion battery,Electrochemical impedance spectroscopy,Equivalent circuit model,GRU,State of health

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