About:2D Thermal
2D Discretised Thermal Model for Cylindrical Cells - assess and design against cell hotspots and thermal gradients
Overview
About:2D Thermal is a discretised thermal model of a cylindrical cell, designed to accurately capture the temperature field within the main domains. The models are parameterised against test data and provide the cell temperature evolution over time as a function of heat generation rate, the boundary conditions applied to each cell face, and the external (sink) temperature.
Technical Description
About:2D Thermal solves a two-dimensional heat equation for the temperature field of a cell, assuming axisymmetric heat transfer, internal heat generation, and cooling. Cooling is expressed using a user-defined lumped heat transfer coefficient on the different external faces of the cell. Local thermal heterogeneity of the cell is included, allowing the user to investigate the impact on heat transfer due to different axial and radial thermal conductivities.
Key features
- Compatible with any cylindrical battery model
Key applications
- Cell comparison and selection
- Determination of cooling system requirements
- Estimation of cell hotspots
- Estimation of cell thermal thermal gradients in high-rate applications such as fast charge