Title:
NON-CONTACT POWER SUPPLY DEVICE AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2017/104450
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a non-contact power supply device capable of suppressing reduction of an energy transmission power quantity, even if the distance between a power transmission-side coil and a power reception-side coil changes. A non-contact power supply device of the present invention has a power transmission device, and a power reception device that has a reception coil to which power is transmitted in a non-contact manner from the power transmission device. The power transmission device has a resonant circuit and a power supply circuit. The resonant circuit has a transmission coil capable of transmitting power to the reception coil. Furthermore, the power supply circuit supplies alternating current power to the resonant circuit, said alternating current power having an adjustable operation frequency. The power transmission device also has a voltage detection circuit that detects an alternating current voltage to be applied to the transmission coil, and a control circuit that adjusts the operation frequency of the alternating current power. The control circuit changes the operation frequency so that the operation frequency is reduced from an initial frequency positioned in an inductance region, and ends the changing processing of the operation frequency when it is determined that the alternating current voltage reached a specified value.
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Inventors:
NAKAO GORO (JP)
Application Number:
PCT/JP2016/085942
Publication Date:
June 22, 2017
Filing Date:
December 02, 2016
Export Citation:
Assignee:
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
H02J50/12
Foreign References:
| JP2015035868A | 2015-02-19 | |||
| JP2013153627A | 2013-08-08 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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