Multiscale modeling and calibration framework for predicting the mechanical response of Li-ion battery cell components
Journal article, 2025
The mechanical response of battery cells plays a vital role in design of electric vehicles e.g., when evaluating their crashworthiness or studying the effects of cell swelling during operation. In this paper, we present a multiscale modeling framework for predicting the mechanical response of battery cell components at different length scales. Two design optimization loops for calibrating material model parameters are established. First, the effective mechanical response of the binder-conductive additive-electrolyte material phase inside the electrodes is estimated by performing homogenization of microscale Representative Volume Elements (RVEs), while utilizing experimental data for the effective electrode layer and data for the electrode particles from literature. Secondly, the effective response of the jellyroll is estimated by creating an RVE of the electrodes-separator stack and perform homogenization, while utilizing experimental data for the individual layers.
Finite element analysis
Model calibration
Homogenization
Li-ion batteries
Electric vehicles
Author
David Carlstedt
Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Volvo Cars
Amit Chetry
Volvo Cars
Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Carl Larsson
Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Ankeet Mohan Purantagi
Volvo Cars
Student at Chalmers
Peter Gustavsson
Volvo Cars
Fredrik Larsson
Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Leif Asp
Chalmers, Industrial and Materials Science, Material and Computational Mechanics
Journal of Power Sources
0378-7753 (ISSN)
Vol. 659 238237Subject Categories (SSIF 2025)
Energy Engineering
Composite Science and Engineering
Applied Mechanics
DOI
10.1016/j.jpowsour.2025.238237