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Title: A Simulation Framework for Battery Cell Impact Safety Modeling Using LS-DYNA

Journal Article · · Journal of the Electrochemical Society
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  1. Ford Motor Company, Dearborn, MI (United States)
  2. Livermore Software Technology Corporation, Livermore, CA (United States)

The development process of electrified vehicles can benefit significantly from computer-aided engineering tools that predict the multiphysics response of batteries during abusive events. A coupled structural, electrical, electrochemical, and thermal model framework has been developed within the commercially available LS-DYNA software. The finite element model leverages a three-dimensional mesh structure that fully resolves the unit cell components. The mechanical solver predicts the distributed stress and strain response with failure thresholds leading to the onset of an internal short circuit. In this implementation, an arbitrary compressive strain criterion is applied locally to each unit cell. A spatially distributed equivalent circuit model provides an empirical representation of the electrochemical response with minimal computational complexity. The thermal model provides state information to index the electrical model parameters, while simultaneously accepting irreversible and reversible sources of heat generation. The spatially distributed models of the electrical and thermal dynamics allow for the localization of current density and corresponding temperature response. The ability to predict the distributed thermal response of the cell as its stored energy is completely discharged through the short circuit enables an engineering safety assessment. A parametric analysis of an exemplary model is used to demonstrate the simulation capabilities.

Research Organization:
Ford Motor Company, Detroit, MI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0007288
OSTI ID:
1425410
Alternate ID(s):
OSTI ID: 1430829
Journal Information:
Journal of the Electrochemical Society, Vol. 164, Issue 1; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (6)

Safety modelling and testing of lithium-ion batteries in electrified vehicles journal April 2018
Testing and Modeling the Mechanical Properties of the Granular Materials of Graphite Anode journal January 2018
Communication—Multi-Physics battery Safety Simulations across Length Scales journal January 2019
Accelerate Battery Safety Simulations Using Composite Tshell Elements journal January 2018
A Multiphysics Computational Framework for Cylindrical Battery Behavior upon Mechanical Loading Based on LS-DYNA journal January 2019
Internal short circuit detection in Li-ion batteries using supervised machine learning journal January 2020