Title:
POWER TRANSMISSION DEVICE AND NON-CONTACT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/021655
Kind Code:
A1
Abstract:
This power transmission device wirelessly transmits power to a power reception device provided with a power receiving coil. The power transmission device is provided with an inverter circuit; a power transmitting coil connected to the inverter circuit; and a control circuit for controlling the output voltage of the inverter circuit. The control circuit calculates a mutual inductance Lm at a prescribed positional relationship between the power transmitting coil and the power receiving coil on the basis of: an AC resistance value of the power receiving coil estimated or calculated from the distance between the power transmitting coil and the power receiving coil; an input impedance of the power transmitting coil; and an AC resistance value of the power transmitting coil. The output voltage of the impedance circuit is determined thereby.
Inventors:
FUJIYOSHI KAZUYUKI (JP)
Application Number:
PCT/JP2018/022311
Publication Date:
January 31, 2019
Filing Date:
June 12, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
H02J50/90; B60L5/00; B60M7/00; G01R27/08; H02J50/10; H02J50/80
Domestic Patent References:
| WO2017115625A1 | 2017-07-06 |
Foreign References:
| JP2010533472A | 2010-10-21 | |||
| JP2012191022A | 2012-10-04 | |||
| JP2013214614A | 2013-10-17 |
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