Title:
WIRELESS-POWER-TRANSFER COIL SYSTEM USING MAGNETOELECTRIC COUPLING TO OFFSET SUPPRESSION OF FREQUENCY SPLITTING
Document Type and Number:
WIPO Patent Application WO/2017/084142
Kind Code:
A1
Abstract:
Disclosed is a wireless-power-transfer coil system using magnetoelectric coupling to offset suppression of frequency splitting, comprising an energy-transmitting coil, an energy-receiving coil, and four loading ring-shaped metal plates; between the transmitting coil and the receiving coil, the first ring-shaped metal plate is loaded with the second ring-shaped metal plate, and the third ring-shaped metal plate is loaded with the fourth ring-shaped metal plate, so as to extend the range of variable distance of power transmission. In the receiving and transmitting coil system of the present invention, the coils are in a state of magnetic coupling-electrical coupling; during the process of motion from long-distance to close-distance, the coupling coefficient of the coils changes gradually; it is possible to maintain a low level of coupling and thus not result in frequency splitting, and high-efficiency energy transfer is maintained between systems. On the basis of the magnetic-coupling operating mode of conventional wireless-power-transfer coil systems, the present invention introduces electrical coupling, such that a conventional power transfer system sensitive to distance is turned into a high-efficiency power transfer system in which distance may vary.
Inventors:
ZHANG XIUYIN (CN)
XUE CHENGDAI (CN)
LI BIN (CN)
XUE CHENGDAI (CN)
LI BIN (CN)
Application Number:
PCT/CN2015/097979
Publication Date:
May 26, 2017
Filing Date:
December 19, 2015
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H02J17/00
Foreign References:
| CN103986245A | 2014-08-13 | |||
| CN101414855A | 2009-04-22 | |||
| CN104135088A | 2014-11-05 | |||
| CN204290505U | 2015-04-22 | |||
| CN103414261A | 2013-11-27 |
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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