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Title:
WIRELESS POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2022127467
Kind Code:
A
Abstract:
To provide a wireless power supply device that supplies power to an electric mobile body including a power receiver with high efficiency regardless of a relative position between the electric mobile body and a power transmitter installed on a road surface or the like.SOLUTION: A wireless power supply device according to the present invention is to transmit power without contact to an electric mobile body moving on a power transmission electrode along the electrode, and includes a power source that supplies high-frequency power, a gyrator, at least four power reception electrodes, and at least four power transmission electrodes using a power transmission line. A physical length of the power transmission electrode is a positive integer multiple of a half of a wavelength of an undulation of transmission power. As for the power transmission electrode, there are two kinds of power transmission electrodes whose terminals are opened or short-circuited as appropriate. The gyrator is loaded between the high-frequency power source and the power transmission electrode with the short-circuited terminal. An input impedance of the power transmission electrode is changed from the short-circuited state to the open state.SELECTED DRAWING: Figure 1

Inventors:
OHIRA TAKASHI
ABE SHINJI
NAKA YASUMASA
Application Number:
JP2021025634A
Publication Date:
August 31, 2022
Filing Date:
February 19, 2021
Export Citation:
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Assignee:
UNIV TOYOHASHI TECHNOLOGY
International Classes:
H02J50/05; H02J50/40