Energy Storage Science and Technology ›› 2023, Vol. 12 ›› Issue (4): 1244-1256.doi: 10.19799/j.cnki.2095-4239.2022.0708

• Energy Storage Test: Methods and Evaluation • Previous Articles     Next Articles

Lithium-ion battery state prediction based on CEEMDAN and ISOA-ELM

Feng LIU(), Haizhong CHEN()   

  1. Jiangsu University of Technology, Changzhou 213000, Jiangsu, China
  • Received:2022-11-29 Revised:2022-12-26 Online:2023-04-05 Published:2023-05-08
  • Contact: Haizhong CHEN E-mail:1036980618@qq.com;11715452@qq.com

Abstract:

Lithium batteries have high energy density, high output voltage, and no memory effect, but their overcharge and over-discharge can cause accidents. In this regard, accurate prediction of the state of charge (SOC) of lithium batteries serves as the best condition. In this paper, a method based on an adaptive noise integrated Empirical Mode decomposition (CEEMDAN) and data-driven model is proposed to predict the state of charge of lithium-ion batteries. The original voltage data of lithium-ion batteries were modally decomposed to obtain the modal components of multiple sub-sequences. An improved Seagull algorithm (ISOA) based on the inertia weight and the Levy flight mechanism was proposed. The parameters of the extreme learning machine prediction model were optimized, and ISOA-ELM lithium battery prediction model was built. The SOC prediction results of the lithium batteries were obtained by training the model. The experimental results show that the model can better fit the actual SOC in practice and is more conducive to the lithium battery working in the best state.

Key words: lithium-ion batteries, state of charge, complete ensemble empirical mode decomposition with adaptive noise, extreme learning machine, seagull optimization algorithm

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