Coupling of Mechanical Behavior of Lithium Ion Cells to Electrochemical-Thermal (ECT) Models for Battery Crush

Chao Zhang, Shriram Santhanagopalan, Ahmad Pesaran, Elham Sahraie, Tom Wierzbicki

Research output: NRELPresentation

Abstract

Vehicle crashes can lead to crushing of the battery, damaging lithium ion battery cells and causing local shorts, heat generation, and thermal runaway. Simulating all the physics and geometries at the same time is challenging and takes a lot of effort; thus, simplifications are needed. We developed a material model for simultaneously modeling the mechanical-electrochemical-thermal behavior, which predicted the electrical short, voltage drop, and thermal runaway behaviors followed by a mechanical abuse-induced short. The effect of short resistance on the battery cell performance was studied.
Original languageAmerican English
Number of pages16
StatePublished - 2016

Publication series

NamePresented at the 16th Annual Advanced Automotive Battery Conference (AABC), 14-17 June 2016, Detroit, Michigan

NREL Publication Number

  • NREL/PR-2C00-66961

Keywords

  • battery cells
  • battery crush
  • electrochemical-thermal
  • lithium ion
  • thermal runaway

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