An experimental analysis of entropic coefficient of a lithium titanate oxide battery

Seyed Saeed Madani*, Erik Schaltz, Søren Knudsen Kær

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

10 Citations (Scopus)
61 Downloads (Pure)

Abstract

In order to understand the thermal behaviour of a lithium-ion battery, the heat generation within the cell should be determined. The entropic heat coefficient is necessary to determine for the heat generation calculation. The entropic heat coefficient is one of the most important factors, which affects the magnitude of the reversible heat. The purpose of this research is to analyze and investigate the effect of different parameters on the entropic coefficient of lithium titanate oxide batteries. In this research, a lithium ion pouch cell was examined in both charging and discharging situations. The state of charge levels range was considered from 10% to 90%, and vice versa, in 10% increments. The temperature levels vary from 5 °C to 55 °C and the voltage levels vary from 1.5 V to 2.8 V. The effect of different parameters such as initial temperature, state of charge, thermal cycle, time duration for thermal cycles, and procedure prior to the thermal cycle on the entropic coefficient of lithium titanate oxide batteries were investigated. It was concluded that there is a strong influence of the battery cell state of charge on the entropic heat coefficient compared with other parameters.
Original languageEnglish
Article number2685
JournalEnergies
Volume12
Issue number14
Pages (from-to)1-10
Number of pages10
ISSN1996-1073
DOIs
Publication statusPublished - Jul 2019

Keywords

  • Entropic heat coefficient
  • Lithium titanate oxide batteries

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