A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

Yang Hua, Sida Zhou, Haigang Cui, Xinhua Liu, Cheng Zhang, Xingwu Xu, Heping Ling, Shichun Yang

Research output: Contribution to journalReview article

Abstract

The rapid growth of transportation demand has been enlarged strongly which has promoted electric vehicles powered by lithium‐ion batteries. However, the inconsistencies within the battery pack will deteriorate over the lifecycle and affect the performance of electric vehicles. Therefore, various thermal management systems and equalization systems have been applied in battery management system to deal with the inconsistencies, extend battery service life, and improve safety performance. This review summarizes the origination of inconsistency within lithium‐ion batteries from production to usage process, and then introduces the classification methods and application scenarios of the balance management system in detail. Based on the circuit topology, equalization systems can be classified into passive and active topologies. Active topologies are widely researched due to the advantages of high equalization efficiency and high speed, and the state‐of‐art innovations are presented and compared from the prospective of circuit, energy flow, efficiency and system complexity. In addition, this review focuses on the mainstream equalization strategies based on the analysis of balancing variables and control algorithms in terms of efficiency, complexity and stability, especially in the areas of variables optimal selection and advanced control algorithms. It is expected that innovations such as cloud control methods and hybrid balancing systems equipped with thermal management will become the future direction of lithium‐ion equalization technologies.

Original languageEnglish
Pages (from-to)11059-11087
Number of pages29
JournalInternational Journal of Energy Research
Volume44
Issue number14
Early online date26 Jun 2020
DOIs
Publication statusE-pub ahead of print - 26 Jun 2020

Keywords

  • Li-ion battery
  • cell imbalance
  • electric vehicles
  • equalization control

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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