In collaboration with Osaka Electric Power Co., a manufacturer of power equipment and industrial robots, the research office of Professor Okadashi, a professor of information science at the University of Science and Technology in Nara Prefecture, Japan, developed the use of wireless charging for mobile devices and pure electric vehicles. Parallel two-wire wireless power transmission method." This is a line type wireless charging technique based on the magnetic resonance method, but instead of arranging a plurality of power supply coils, the power supply applies high frequency voltages of about 13 MHz to two parallelly arranged wires. The far end of the line can be connected or separated. The receiving device is a common structure using a coil. The intended use is for charging a moving body such as a pure electric vehicle while driving. For example, parallel double lines are installed on the factory's industrial robot walkways or sidewalks next to the lanes to charge robots, electric vehicles, electric buses, bicycles, and pedestrian smart phones equipped with power receivers. According to Okada et al., the new technology has the following two advantages compared to the conventional technology in which multiple coils are arranged as a power supply: 1. The power supply is easy to install; 2. The power supply efficiency is not easily affected by the position between the power supply and the power receiver. The impact of the relationship. The power supply efficiency of the parallel two-wire technology also depends on the location. This is because there is a standing wave of current density in the parallel two lines, and the "wave amplitude" is very different from the power that can be transmitted at the node. Okada et al. believe that this problem can be solved by measures such as bending the section of the wave section. Hubei ruiyate Automobile Co.,Ltd , https://www.ruiyateworkingtruck.com