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Introduction to the Battery Design Module

The COMSOL Multiphysics^® software and the Battery Design Module, an add-on product, provide capabilities for describing batteries and electrochemical cells. Here, we will discuss the features and functionality of the Battery Design Module, followed by a quick demonstration of how to couple the Lumped Battery interface with the Heat Transfer in Solids interface to build an electrothermal model.

Features and Functionality

The Battery Design Module expands the functionality and features available for battery modeling, design, and analysis in COMSOL Multiphysics^®. The following archived presentation gives an introduction to the module and its various important features and capabilities and presents several tutorial models that demonstrate its use.

Watch the video to learn more about the software's capabilities for modeling batteries across different scales, from individual cells to entire packs. You'll get an overview of the key features and modeling workflow and learn how to use them in a model. Specifically, we will highlight the multiphysics capabilities for coupling electrochemistry with heat transfer to investigate thermal management of battery cells and packs.

Demo: Thermal Modeling of a Lithium-Ion Battery

Thermal management is critical for safety and ensuring long battery lifetimes. With the Thermal Modeling of a Cylindrical Lithium-Ion Battery in 2D tutorial model, we will simulate an air-cooled cylindrical 18650 lithium-ion battery during a charge–discharge cycle, followed by a relaxing period. The Lumped Battery interface is used to model the battery cell chemistry, and the Heat Transfer in Solids interface is used to model the temperature in the battery in a 2D axisymmetric geometry. The two models are coupled by the generated heat source and the average temperature using the Electrochemical Heating multiphysics coupling.

Further Learning

You can download the example model files discussed here from the following links:

• Electrode Utilization in a Large-Format Lithium-Ion Battery Pouch Cell
• Liquid-Cooled Battery Energy Storage System
• Thermal Modeling of a Cylindrical Lithium-Ion Battery in 2D

If you are interested in learning more about the various approaches to defining a load cycle with COMSOL Multiphysics^®, see our blog post How to Define Load Cycles in Battery Models. You can learn more about the Battery Design Module here.