Overview of wireless power transmission technologies and developments

With the vigorous development of science and technology, informationization and intelligence continue to popularize and accelerate, the traditional wired power transmission method gradually exposes many shortcomings, such as the inconvenience of carrying cables, plugging and unplugging operation process may produce electric sparks and other safety hazards. This makes the charging process of electric equipment still highly dependent on the stable power interface, which greatly affects the continuity and efficiency of its use. In order to avoid and solve these problems, wireless power transmission technology has gradually entered people's vision, which can realize non-contact energy transmission, with the advantages of convenience, good concealment, good environmental adaptability and so on. This paper reviews the development history, classification and research trends of wireless power transmission technology, and focuses on the basic principles of magnetic coupling resonant wireless power transmission technology. Through the analysis of existing research results, the main challenges and optimization directions of this technology are summarized.