LIU Jiahao, ZHANG Hongwei, YUAN Yongjun. Health state estimation of lithium battery based on LSTM and EIS[J]. 2021, (12): 59-61+65. DOI: 10.13873/J.1000-9787(2021)12-0059-03.
Aiming at the problems of long test time and low prediction precision of the existing electrochemical impedance spectroscopy(EIS)theory in estimation of lithium battery state of health(SOH)
a method of lithium battery health state estimation based on imaginary part of EIS and long short-term memory(LSTM)neural network is proposed.This method only performs impedance measurement at a specific frequency
which can greatly shorten the testing time of electrochemical impedance.Meanwhile
LSTM neural network has the advantage of learning the long-term trend of lithium ion battery attenuation state