Unit cells for multiphysics modelling of structural battery composites
Paper in proceedings, 2019

To predict the multifunctional performance of structural battery composites, multiple physical phenomena need to be studied simultaneously. Hence, multiphysics models are needed to evaluate the complete performance of this composite material. In this study the coupled analysis for multiphysics modelling of structural battery composites is presented and modelling strategies and unit cell designs are discussed with respect to the different physical models. Furthermore, FE-models are setup in the commercial Finite Element (FE) software COMSOL to study if existing physics-based modelling techniques and homogenization schemes for conventional lithium ion batteries can be used to describe the electrochemical behaviour of structural battery composites. To predict the microscopic behaviour, the local variation of the mass and charge concentrations need to be accounted for. Hence, refined models with appropriate boundary conditions are needed to capture the microscopic conditions inside the material. The numerical results demonstrate that conventional physics-based 1D battery models and homogenization schemes based on porous media theory can be used to predict the macroscopic electrical behaviour of the fibrous structural battery. For future work electrochemical experiments on battery cell level are planned to validate the numerical results.

Multifunctional composites

Carbon fibre reinforced plastics

Finite Element Analysis (FEA)

Energy storage

Multiphysics modelling

Author

David Carlstedt

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Johanna Xu

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Kenneth Runesson

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Fredrik Larsson

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

Leif Asp

Chalmers, Industrial and Materials Science, Material and Computational Mechanics

22nd International Conference on Composite Materials
Melbourne, Australia,

Damage Tolerance and Durability of Structural Power Composites

US Air Force Office of Strategic Research (AFOSR), 2017-09-30 -- 2020-09-29.

Structural pOweR CompositEs foR futurE civil aiRcraft (SORCERER)

European Commission (Horizon 2020), 2017-02-01 -- 2020-02-28.

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Transport

Energy

Materials Science

Subject Categories

Aerospace Engineering

Applied Mechanics

Composite Science and Engineering

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

More information

Latest update

9/13/2019