Model-Based Design and Simulation of Electric Vehicles with Matlab and Li-ion Batteries

Abstract

The rapid growth of electric vehicles (EVs) is driving demand for advanced design and simulation tools to optimize EV powertrain components, especially the critical battery pack. Accurate models are needed to predict real-world EV performance, range, and battery life under various usage conditions. This paper presents a model-based design approach for EVs using Matlab and Simulink, with a focus on lithium-ion battery modeling and simulation. High-fidelity battery cell and pack models are developed based on equivalent circuit methods. The models are parameterized and validated using test data, then integrated into a complete EV powertrain model. Drive cycle simulations are conducted to predict EV range and battery state of charge. The effects of battery capacity fade and regenerative braking on long-term performance are also investigated. The proposed methodology enables rapid evaluation of EV designs to help meet stringent performance, cost and regulatory targets. Results demonstrate the capability of model-based design to accelerate EV development.