WIRELESS POWER-TRANSFER DEVICE

Title:

WIRELESS POWER-TRANSFER DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/080647

Kind Code:

A1

Abstract:

The coil plane of a power-feeding resonator (22) in a power-feeding module (202) and the coil plane of a power-receiving resonator (32) in a power-receiving module (203) are aligned so as to face each other, cylindrical magnetic members (23 and 33) that cover the entire inner coil surfaces of the power-feeding resonator (22) and the power-receiving resonator (32) are disposed inside the coils thereof, and magnetic fields between the power-feeding resonator (22) and the power-receiving resonator (32) are changed so as to transfer power. Magnetic fields that arise around the power-feeding resonator (22) and the power-receiving resonator (32) are thus blocked by the aforementioned magnetic members (23 and 33), making the energy transmission efficiency when power is transferred from the power-feeding module (202) to the power-receiving module (203) higher than said energy transmission efficiency would be if the magnetic members (23 and 33) were not used.

Inventors:

HATANAKA TAKEZO (JP)
TSUDA HISASHI (JP)

Application Number:

PCT/JP2013/062697

Publication Date:

May 30, 2014

Filing Date:

May 01, 2013

Export Citation:

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Assignee:

NITTO DENKO CORP (JP)

International Classes:

H02J17/00

Foreign References:

JP2010239848A	2010-10-21
JPH1094180A	1998-04-10
JP4624768B2	2011-02-02
JP2010239769A	2010-10-21
JP2010239777A	2010-10-21
JP2010124522A	2010-06-03

Other References: