Title:
NON-CONTACT POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2018050365
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To position between a power transmission coil and a power reception coil with a simple structure, in a non-contact power supply device.SOLUTION: A detection value which is output from an AC voltmeter 44 becomes larger as a distance between a power transmission coil 16 and a power reception coil 26 is smaller, and becomes maximal when the position of the power transmission coil 16 is fit to the position of the power reception coil 26. When the detection value is a predetermined threshold or lower, a control unit 25 switches a switch 30 on from off. The impedance of a choke coil 32 to a DC current is zero, whereas the impedance of a DC cutoff capacitor 42 is infinitive. This causes the application of a DC voltage from a DC power supply 28 to the power transmission coil 16, and a DC current flow in the power transmission coil 16 in superposition with an AC current. The DC current generates a DC magnetic flux occurs from the power transmission coil 16, so that the power transmission coil 16 is attracted to a positioning magnet arranged inside the power reception coil 26, to thereby position the power transmission coil 16 with the power reception coil 26.SELECTED DRAWING: Figure 2
Inventors:
KAWABATA HIROMI
Application Number:
JP2016183038A
Publication Date:
March 29, 2018
Filing Date:
September 20, 2016
Export Citation:
Assignee:
OI ELECTRIC CO LTD
International Classes:
H02J50/10; H02J50/90
Domestic Patent References:
| JP2010273453A | 2010-12-02 | |||
| JP2012095456A | 2012-05-17 | |||
| JP2010098893A | 2010-04-30 | |||
| JP2014204540A | 2014-10-27 | |||
| JP2011514796A | 2011-05-06 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office
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