Investigation of Battery Heat Generation and Key Performance Indicator Efficiency Using Isothermal Calorimeter

Mohammad Rezwan Khan, Søren Knudsen Kær

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)
568 Downloads (Pure)

Abstract

In this experiment-based research, the performance and behaviour of a pouch type Li-ion battery cell are reported. The commercial test cell has a Lithium Titanate Oxide (LTO) based anode with 13Ah capacity. It is accomplished by measuring the evolution of surface temperature distribution, and the heat flux of the battery cell at the same time. Temperatures on the surface of the cell are measured using contact thermocouples, whereas, the heat flux is measured simultaneously by the isothermal calorimeter. This heat flux measurement is used for determining the heat generation inside the cell. Consequently, using the heat generation result the important performance constituent of the battery cell efficiency is calculated. Those are accomplished at different temperature levels (-5°C, 10°C, 25°C and 40°C) of continuous charge and discharge constant current rate (1C,2C,4C,8C,10C (maximum)). There is a significant change in heat generation in both charge and discharge events on different temperature and C-rate. The heat flux change level is non-linear. This nonlinear heat flux is responsible for the nonlinear change of efficiency in different C-rate in a particular temperature. The presented experimental technique is a very precise determination to profile the battery cell. The result of the research can be incorporated in constructing a precise datasheet for a battery cell which can assist the researchers, engineers, and different stakeholders to enhance different aspects of battery research.
Original languageEnglish
Title of host publicationProceedings of 2016 IEEE Vehicle Power and Propulsion Conference (VPPC)
Number of pages6
PublisherIEEE Press
Publication dateOct 2016
ISBN (Electronic)978-1-5090-3528-1
DOIs
Publication statusPublished - Oct 2016
Event2016 IEEE Vehicle Power and Propulsion Conference (VPPC) - , China
Duration: 17 Oct 201620 Oct 2016
http://www.vppc2016.org/

Conference

Conference2016 IEEE Vehicle Power and Propulsion Conference (VPPC)
Country/TerritoryChina
Period17/10/201620/10/2016
Internet address

Keywords

  • Surface temperature
  • Spatial distribution
  • Isothermal Calorimeter
  • Lithium Titanate Oxide (LTO)
  • Battery thermal management
  • Battery efficiency
  • Heat generation
  • Key performance indicator (KPI)
  • Battery behaviour

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