Heat Generation Concerns Associated with Extreme Fast Charging

Matthew Keyser, Andrew Colclasure, Josh Major, Kae Fink, Weijie Mai, Shriram Santhanagopalan, Eric Dufek, Sean Lubner, Ravi Prasher, Eric McShane, Steve Harris, Jiayu Wan, Wenxiao Huang, Yi Cui, Mike Toney

Research output: NRELPresentation


Present-day thermal management systems for battery electric vehicles are inadequate in limiting the maximum temperature rise of the battery during extreme fast charging. Incorrect thermal management designs for extreme fast charging conditions could result in cells reaching abuse temperatures and potentially sending the cells into thermal runaway. Furthermore, the cell and module design needs to be improved to meet the lifetime expectations of the consumer. Each of these aspects is explored and addressed as well as outlining where the heat is generated in a cell, the efficiencies of power and energy cells, and how to potentially measure the internal temperatures of a battery. Thermal management is not a limiting condition with regards to extreme fast charging, but many factors need to be addressed especially for future high specific energy density cells to meet U.S. Department of Energy cost and volume goals.
Original languageAmerican English
Number of pages26
StatePublished - 2020

Publication series

NamePresented at the 2020 Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting, 1-4 June 2020

NREL Publication Number

  • NREL/PR-5400-76738


  • extreme fast charging
  • heat generation
  • lithium ion battery
  • temperature monitoring


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