POWER RECEIVER AND POWER TRANSMISSION SYSTEM

Title:

POWER RECEIVER AND POWER TRANSMISSION SYSTEM

Document Type and Number:

WIPO Patent Application WO/2016/067447

Kind Code:

A1

Abstract:

Provided are a power receiver capable of improving power supply balance, and a power transmission system. This power receiver includes: a first secondary-side resonance coil that receives power from a primary-side resonance coil by means of magnetic field resonance generated between the primary-side resonance coil and the first secondary-side resonance coil; a capacitor that is inserted in series into a resonance coil unit of the first secondary-side resonance coil; a rectifying circuit; a smoothing circuit; a pair of output terminals; a switch, which is connected in parallel to the capacitor, or is connected in series between a first terminal or a second terminal of the first secondary-side resonance coil, and the rectifying circuit; and a drive control unit that drives the switch in a first PWM drive pattern that is determined by means of a first frequency equal to or lower than the frequency of the magnetic field resonance, and a first duty ratio that is set on the basis of a first power receiving efficiency of the first secondary-side resonance coil, a first rated output of a first load connected to the pair of output terminals, a second power receiving efficiency of a second secondary-side resonance coil of another power receiver, and a second rated output of a second load supplied with power from the another power receiver.

Inventors:

SHIMOKAWA SATOSHI (JP)

Application Number:

PCT/JP2014/079049

Publication Date:

May 06, 2016

Filing Date:

October 31, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

FUJITSU LTD (JP)

International Classes:

H02J17/00

Domestic Patent References:

WO2013035873A1

2013-03-14

Foreign References:

JP2011019291A	2011-01-27
JP2013530662A	2013-07-25
JP2013126326A	2013-06-24

Other References: