A reliability-based design concept for lithium-ion battery pack in electric vehicles

Zhitao Liu, Cherming Tan*, Feng Leng

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

76 Scopus citations

Abstract

Battery technology is an enabling technology for electric vehicles (EVs), and improving its safety and reliability while reducing its cost will benefit its application to EVs. In this paper, a method on the design and analysis of lithium-ion (Li-ion) battery pack from the reliability perspective is presented. The analysis is based on the degradation of the battery pack, which is related to the cells configuration in the battery pack and the state of health (SoH) of all the Li-ion cells in the pack. Universal Generating Function (UGF) technique is used for reliability analysis. As adding new battery cells to the battery pack in the production process can improve its reliability but it also increases cost, tradeoff between the number of the redundant battery cells, the configuration of the redundant cells and their reliability is investigated in this work.

Original languageEnglish
Pages (from-to)169-177
Number of pages9
JournalReliability Engineering and System Safety
Volume134
DOIs
StatePublished - 02 2015

Bibliographical note

Publisher Copyright:
© 2014 Elsevier Ltd. All rights reserved.

Keywords

  • Battery pack
  • Electric vehicle
  • Multi-state systems
  • Reliability
  • State of health
  • Universal generating function

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