Efficient Simulation and Abuse Modeling of Mechanical-Electrochemical-Thermal Phenomena in Lithium-Ion Batteries

Shriram Santhanagopalan, Kandler Smith, Peter Graf, Ahmad Pesaran, Chao Zhang, Joshua Lamb, Daniel Abraham, Dennis Dees, Pierre Yao

Research output: NRELPresentation

Abstract

NREL's Energy Storage team is exploring the effect of mechanical crush of lithium ion cells on their thermal and electrical safety. PHEV cells, fresh as well as ones aged over 8 months under different temperatures, voltage windows, and charging rates, were subjected to destructive physical analysis. Constitutive relationship and failure criteria were developed for the electrodes, separator as well as packaging material. The mechanical models capture well, the various modes of failure across different cell components. Cell level validation is being conducted by Sandia National Laboratories.
Original languageAmerican English
Number of pages36
StatePublished - 2017

Publication series

NamePresented at the Vehicle Technologies Office (VTO) Annual Merit Review and Peer Evaluation, 5-9 June 2017, Washington, D.C.

NREL Publication Number

  • NREL/PR-5400-68280

Keywords

  • battery safety
  • computational efficiency
  • mechanical crush
  • parameter identification

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