Battery Cell Modeling and Simulation using Simscape

High-fidelity battery cell modeling and dynamic simulation using Simscape in MATLAB/Simulink for EV and energy storage system analysis

Lithium Battery Cell Model with Thermal Effects for Cell-Level Analysis

1. Introduction

This project presents a high-fidelity lithium-ion battery cell model with integrated thermal effects developed using Simscape Electrical and Simulink. The model is designed for cell-level analysis, enabling both electrical and thermal behavior evaluation under dynamic operating conditions.

Battery thermal dynamics play a critical role in electric vehicle safety, performance optimization, and battery lifetime prediction. This work integrates electro-thermal coupling to provide realistic system-level insights.2. Modeling Environment

The model is implemented using:

• MATLAB R2024a

• Simulink

• Simscape Electrical

Simscape physical modeling blocks are used to represent the battery’s electrical characteristics and thermal domain interactions.

3. Model Architecture

The lithium battery model includes:

• Electrical equivalent circuit representation

• State of Charge (SOC) estimation

• Internal resistance modeling

• Heat generation due to internal losses

• Thermal mass and heat transfer modeling

• Temperature-dependent performance behavior

The electro-thermal coupling enables analysis of how temperature affects voltage response, efficiency, and internal losses.

4. Simulation Capabilities

The model allows:

• Dynamic load testing

• Temperature rise analysis

• SOC tracking under variable current profiles

• Evaluation of thermal stability

• Performance assessment for EV and energy storage systems

This framework can be extended to battery pack modeling and battery management system (BMS) algorithm validation.

5. Applications

• Electric Vehicle battery development

• Thermal management studies

• Energy storage system analysis

• Battery Management System (BMS) design

• Research and academic simulations

6. Tutorial and Demonstration

A full tutorial and simulation walkthrough is available on YouTube:

https://www.youtube.com/channel/UCoYZYmQ6lC16Z8G6mEGm2Ow

The video demonstrates model setup, parameter configuration, and interpretation of electrical and thermal results.

7. Conclusion

This lithium battery electro-thermal model provides a scalable and research-oriented framework for analyzing battery behavior at the cell level. It bridges electrical performance modeling with thermal dynamics, supporting advanced EV and renewable energy system studies.