Modeling and Simulation of a Series and Parallel Battery Pack Model in MATLAB/Simulink

Abstract

Lithium-ion batteries have recently become the focus of research in vehicle applications due to their numerous advantages. Lithium-ion batteries have higher specific energy, better energy density, and a lower self-discharge rate than other secondary batteries, making them appropriate for electric vehicles and hybrid electric vehicles. Nonetheless, worries about safety, cost, charging time, and recycling have hampered the commercial usage of lithium-ion batteries for automotive applications. An accurate battery model on a simulation platform is required for the development of an effective battery system. In this study, a battery model is built in MATLAB/Simulink. Two variations are available: one with a series–parallel battery arrangement and a single model without configuration. The structure of the proposed model is provided and explained in detail. Based on the test results, the developed battery model was validated. A comparison shows that the model created can accurately predict current, voltage, and power performance. This model is designed for Eaton Electromechanical Battery Li-ion 18650 batteries but is also said to work with other types of batteries. The simulation takes into account the battery’s state of charge, current, voltage, and power requirements.