A Review of the Current Development Status of Electromagnetic Induction and Magnetic Coupled Resonance Technologies in Wireless Charging for Electric Vehicles

Abstract

With the rapid development of electric vehicles (EVs), wireless charging technology has become a research hotspot because of its convenience and safety. This paper reviews the current situation of electromagnetic induction and magnetic resonance coupling technology for wireless charging of electric vehicles, and analyzes their technical principles, characteristics and application scenarios. Electromagnetic induction technology is based on Faraday's law of electromagnetic induction, which realizes efficient short-distance energy transmission through magnetic coupling between primary and secondary coils, and is suitable for static charging scenarios. Magnetic resonance coupling technology optimizes transmission distance and efficiency through resonant network, which is suitable for dynamic charging and complex environment. These two technologies have their own advantages and disadvantages in charging efficiency, transmission distance and electromagnetic radiation safety, and can complement each other. By optimizing the coil design, compensation network and control strategy, the performance of these technologies is constantly improving, which provides important support for the intelligent and sustainable development of EV. Future research should solve the problems of efficiency loss, cost reduction and electromagnetic compatibility, so as to promote the wide application of wireless charging technology.