Real-time displacement and strain mappings of lithium-ion batteries using three-dimensional digital image correlation

P.K. Leung, C. Moreno, I. Masters, S. Hazra, B. Conde, M.R. Mohamed, R.J. Dashwood, Rohit Bhagat

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This work presents the first application of three-dimensional digital image correlation for real-time displacement and strain analysis of a pouch type lithium-ion battery. During the electrochemical charge–discharge processes, displacements in the x-, y- and z-directions vary at different states-of-charge (SOCs) attributed to the expansion and the contraction of the interior structure. The z-displacement is observed to develop and concentrate at the vicinity of the openings of the jelly-roll structure. By resolving the displacement components, the progression and distribution of the surface strains, including principal and von-Mises strains, are computed in the charge–discharge processes. It is shown that the dominant strains are up to 0.12% in the rolling direction of the jelly-roll structure and distribute uniformly on the x–y plane over the surface.
Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalJournal of Power Sources
Volume271
Early online date7 Aug 2014
DOIs
Publication statusPublished - 20 Dec 2014

Keywords

  • Digital image correlation
  • Lithium-ion battery
  • Principal strain
  • stress
  • von-Mises strain

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