Akiyoshi Uchida

TL;DR: In this article, a power transmission device includes a power supply unit configured to supply power by a resonance frequency for magnetic resonance; a temperature detector provided in the power transmission resonance coil; and a control unit that can determine whether a detected temperature detected by the temperature detector at an elapsed time is within the allowable temperature range at the elapsed time.

TL;DR: In this article, a distance detector was used to detect a distance between the power transmitting resonant coil and the power receiving resonant coils, and a power transmitting frequency controller was used for changing the first resonant frequency of a power receiving coil from the first resonance frequency to a second resonance frequency on the basis of the distance detected by the distance detector.

TL;DR: A wireless power supply system includes a wireless power transmitting device, a power transmission control unit, and a plurality of wireless power receiving devices configured to include respective unique resonant circuits having different resonant frequency characteristics which are different to each other as discussed by the authors.

TL;DR: A wireless electric power supply method includes: supplying electric power from a power supply section to a power-transmission resonance coil at a resonance frequency which causes magnetic field resonance as mentioned in this paper.

TL;DR: In this article, a wireless power supply system capable of preventing a decrease in transmission efficiency of power from a power transmission device to a power reception device is provided, where the distance detection unit 14 detects the distance between the power transmission resonance coil 12 and the power reception resonance coil 22.