Title:
POWER TRANSMISSION DEVICE AND WIRELESS POWER FEED SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/176433
Kind Code:
A1
Abstract:
In order to minimize negative impacts to the surrounding caused by alternating-current magnetic fields emitted from a plurality of primary coils, power transmission devices 100a, 100b are respectively provided with: a primary coil L1a and a power transmission control unit 110a which performs control on an alternating current flowing to the primary coil L1a so as to cause an alternating-current magnetic field to be emitted from the primary coil L1a; and a primary coil L1b and a power transmission control unit 110b which performs control on an alternating current flowing to the primary coil L1b so as to cause an alternating-current magnetic field to be emitted from the primary coil L1b. The power transmission control units 110a, 110b cause, under the control of an overall control unit 10, the frequency of the alternating current flowing to the primary coil L1a and the frequency of the alternating current flowing to the primary coil L1b to match with each other.
Inventors:
MIYAZAKI HIDEKI (JP)
TANAKA SHINTARO (JP)
TANAKA SHINTARO (JP)
Application Number:
PCT/JP2019/005213
Publication Date:
September 19, 2019
Filing Date:
February 14, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
H02J7/00; H02J50/40; H02J50/12; H02J50/70; H02J50/80
Domestic Patent References:
| WO2012169584A1 | 2012-12-13 | |||
| WO2011077488A1 | 2011-06-30 |
Foreign References:
| JP2017200339A | 2017-11-02 | |||
| JP2010268610A | 2010-11-25 | |||
| JP2015213392A | 2015-11-26 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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