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Predict the Remaining Useful Life of Lithium Batteries Based on EWT-Elman

  • Ze Ping Wang
  • Jian Feng QuEmail author
  • Xiao Yu Fang
  • Hao Li
Conference paper
  • 34 Downloads
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1060)

Abstract

The performance degradation process of a lithium battery is a nonlinear and non-stationary process. In order to accurately predict its remaining useful life (RUL), this paper combines empirical wavelet transform (EWT) and Elman neural network (ENN). First, the degraded signal of the lithium battery is decomposed by EWT, and the decomposed frequency sublayer signals are obtained. Secondly, the decomposition signal is predicted by ENN, and then, the predicted value of the decomposition signal is reconstructed to obtain the predicted lithium battery performance degradation signal. Finally, the RUL of the lithium battery is obtained by analyzing the failure threshold. It has been verified that the method proposed in this paper can effectively predict the RUL of lithium batteries.

Keywords

Lithium battery Empirical wavelet transform Elman neural network Remaining useful life 

Notes

Acknowledgements

This work was supported by the Fundamental Research Funds for the Central Universities (Project NO. 2018CDYJSY0055), was supported by the Open Research Fund of The Academy of Satellite Application under grant NO. JSKFJ201900011, was supported by the Natural Science Foundation of Chongqing City, China (cstc2016jcyjA0504).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Ze Ping Wang
    • 1
  • Jian Feng Qu
    • 1
    Email author
  • Xiao Yu Fang
    • 1
  • Hao Li
    • 1
  1. 1.College of AutomationChongqing UniversityChongqingChina

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