Feasibility of EIS on Module Level Li-ion Batteries for Echelon Utilization

Alexandru Savca, Seyedreza Azizighalehsari*, Prasanth Venugopal, Gert Rietveld, Thiago Batista Soeiro

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
82 Downloads (Pure)


The exponential growth in electric vehicles causes similar growth in retired batteries, resulting in a need to evaluate these batteries for possible use in other applications. Methods for fast health characterization are still challenging for batteries. So far, electro-chemical impedance spectroscopy as a frequency domain measurement technique has been mainly used for this purpose at the battery cell level. This paper aims to evaluate the feasibility of EIS on the module level, to see whether it allows obtaining the module’s practical electrical equivalent circuit model (ECM) beyond cell-level modeling. To this end, ECM parameters derived from EIS measurements on cells are compared with those from modules made from these cells. The results show a clear correlation between measuring the EIS on the cell level and the module created by connecting the same cells. This provides a first evidence for the usefulness of conducting EIS measurements at module level with an acceptable range of accuracy and consistency with the results obtained from the individual cells.
Original languageEnglish
Title of host publication2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)
Subtitle of host publicationGreen World with Power Electronics
Place of PublicationPiscataway, NJ
Number of pages6
ISBN (Electronic)978-89-5708-350-5
ISBN (Print)979-8-3503-3620-7
Publication statusPublished - 22 Aug 2023


  • Lithium-ion battery (LIB)
  • Equivalent Circuit Model (ECM)
  • Electrochemical Impedance Spectroscopy (EIS)
  • Second Life Batteries (SLB)
  • Battery module
  • 2023 OA procedure


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