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

Shriram Santhanagopalan

Research output: NRELPoster


This poster covered simultaneous coupling of electrochemical-thermal models with mechanical deformation in lithium ion batteries. Efficiency and stability of mechanical models was significantly enhanced by implementing electrochemical models into LS-DYNA using User-Defined Elements. Six case studies were built and licensed out to participants from Industry for initial testing and their feedback is being incorporated into these tools. Dynamic response of the cells was incorporated by measuring mechanical response of components at strain rates as high as 250 /s. Temperature range for property measurements was expanded (as high as 200 degrees C) to account for property changes at high temperatures experienced by cell components under battery abuse. Multi-cell validation has been expanded to include four different sets of experimental data, with support from various partners. Complex failure modes and fracture response are currently being investigated. These are still very challenging, given the limited amount of prior work available in the literature.
Original languageAmerican English
StatePublished - 2019

Publication series

NamePresented at the 2019 Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting, 10-13 June 2019, Arlington, Virginia

NREL Publication Number

  • NREL/PO-5400-73608


  • abuse response modeling
  • battery safety
  • explicit finite element simulations
  • high strain-rate deformation
  • lithium-ion batteries
  • mechanical failure


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