Optimizing EV Charging Infrastructure: A Comparative Study of CC and CC-CV Methods

Abstract: The development of Electric Vehicles (EV) has seen lithium batteries emerge as the primary energy source in recent years, owing to their peak energy density, enhanced power density, and extended lifespan. Rapid and efficient battery charging is essential for electric vehicles. While it takes only a few minutes to refuel petrol-powered vehicles, an EV requires 4-6 hours for a full charge, depending on the C-rate. This paper discusses the modeling and simulation of a multi-current charging method designed for a two-wheeled electric vehicle. The proposed approach employs a closed- loop control system to regulate the charging current via a buck converter power conditioning circuit. To assess the effectiveness of the proposed charging method, the circuit is simulated within the MATLAB/Simulink environment, and the results are compared to those obtained from the constant current charging (CC) method and the Constant Current- Constant Voltage (CC-CV) charging method.