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Methodology for Developing a Macro Finite Element Model of Lithium-Ion Pouch Cells for Predicting Mechanical Behaviour under Multiple Loading Conditions
| Content Provider | MDPI |
|---|---|
| Author | Beaumont, Richard Masters, Iain Das, Abhishek Lucas, Steve Thanikachalam, Arunn Williams, David |
| Copyright Year | 2021 |
| Description | To assist in light weighting of electric vehicles by improving the volumetric and gravimetric energy density and the structural performance of the battery pack, a modelling methodology based on a macro finite element model of a pouch cell has been developed. This model treats the core cell structure as a homogeneous orthotropic honeycomb block with the pouch material being defined as an orthotropic fabric with compressive stress elimination. The model considers five compression and bending load cases simultaneously and allows a level of element discretisation that is computationally efficient and appropriate for inclusion in full vehicle and sub-system simulations. The methodology is scalable in that it can be applied to a range of chemistries, external geometries and internal cell constructions. When considering stacks of cells, the model is predictive for both lateral compression and three-point bend, but further work is required to improve the confined compression response. |
| Starting Page | 1921 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14071921 |
| Journal | Energies |
| Issue Number | 7 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-03-30 |
| Access Restriction | Open |
| Subject Keyword | Energies Mechanical Engineering Pouch Cell Quasi-static Testing Finite Element Analysis |
| Content Type | Text |
| Resource Type | Article |
