Electrostatic coupling type non-contact electric supply device

Japanese Patent JP6049742

B2

An electrostatic-coupling contactless power supply device of the invention includes a power supply electrode and a high-frequency power source circuit that are provided on a fixing portion, and a power receiving electrode and a power receiving circuit that are provided on a movable portion. The power supply electrode is formed of a plurality of segment electrodes which are arranged in a line in a moving direction of the movable portion and to which power is individually supplied from the high-frequency power source circuit. The electrostatic-coupling contactless power supply device further includes: a plurality of switches that are connected between the high-frequency power source circuit and the segment electrodes, respectively, and are opened and closed independently of one another; a current detecting circuit that individually detects segment currents flowing in the respective segment electrodes; and a switch controller that controls the switches on the basis of at least one of a magnitude and an increase/decrease state of each of the segment currents changing with the movement of the movable portion so that only a part of the plurality of switches are closed. Accordingly, it is possible to improve power supply efficiency in comparison with the related art in the contactless power supply using electrodes.

Shinji Takigawa
Takahiro Kondo
Ishiura Naomichi

JP2014537926A

December 21, 2016

September 26, 2012

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Fuji Machine Manufacturing Co., Ltd.

H02J50/05

JP2012143131A
JP2011176949A
JP2011167031A
JP2003143712A

WO2010070914A1

Kobayashi Osamu
Kiichi Yamamoto
Kimura Gunji

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