Nowadays, wireless power transmission has many related applications in life, such as wireless charging of mobile phones and wireless charging of electric toothbrushes. Some electronic devices have achieved wireless charging. This paper focuses on wireless power transmission. Firstly, the basic knowledge of wireless power transmission is briefly introduced, including the classification of wireless power transmission, the most basic principle of wireless power transmission and its practical application. After that, this paper gives two examples of the two challenges facing the development of wireless power transmission: the distance limit of power transmission and the harm of electromagnetic fields to the human body. It also includes what would happen if these two problems were solved, and the need to solve them. At the end of this paper, the solutions that can be used to solve the above two problems are also listed, and the expectations and predictions for future wireless power transmission are also mentioned.
Xing Chen (Mon,) studied this question.