Design optimization of electromagnetic shielding and charging efficiency for electric vehicle wireless charging system

Abstract

Electric vehicle (EV) technology is rapidly advancing, yet the wireless charging system for EVs still faces challenges in terms of insufficient charging efficiency and electromagnetic safety. To overcome these obstacles, this study proposes a novel approach by integrating the double-ended charge-level capacitance charging model with a composite electromagnetic shielding scheme, resulting in the charge-level capacitance composite shielding charging model. Experimental verification confirms the effectiveness of the proposed composite electromagnetic shielding model, demonstrating superior shielding performance compared to conventional models. Furthermore, performance analysis of the suggested charge-level capacitance composite shielding charging model reveals a disk loss of 0.087 W, a transmission efficiency of 98.25%, and a magnetic induction strength of 9.09 T. Collectively, these comprehensive findings indicate that the proposed charging model offers enhanced charging performance and electromagnetic shielding capabilities, surpassing those of traditional models, and holds practical value for real-world implementation.