Simultaneously Coupled Mechanical-Electrochemical-Thermal Simulation of Lithium-Ion Cells: Preprint

Shriram Santhanagopalan, Michael Sprague, Ahmad Pesaran, Chao Zhang

Research output: Contribution to conferencePaper


Understanding the combined electrochemical-thermal and mechanical response of a system has a variety of applications, for example, structural failure from electrochemical fatigue and the potential induced changes of material properties. For lithium-ion batteries, there is an added concern over the safety of the system in the event of mechanical failure of the cell components. In this work, we present a generic multi-scale simultaneously coupled mechanical-electrochemical-thermal model to examine the interaction between mechanical failure and electrochemical-thermal responses. We treat the battery cell as a homogeneous material while locally we explicitly solve for the mechanical response of individual components using a homogenization model and the electrochemical-thermal responses using an electrochemical model for the battery. A benchmark problem is established to demonstrate the proposed modeling framework. The model shows the capability to capture the gradual evolution of cell electrochemical-thermal responses, and predicts the variation of those responses under different short-circuit conditions.
Original languageAmerican English
Number of pages13
StatePublished - 2016
Event229th Meeting of the Electrochemical Society (ECS 229) - San Diego, California
Duration: 29 May 20162 Jun 2016


Conference229th Meeting of the Electrochemical Society (ECS 229)
CitySan Diego, California

NREL Publication Number

  • NREL/CP-5400-66962


  • electrochemical-thermal mechanical response
  • energy storage
  • lithium-ion battery
  • MECT


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