Title:
NON-CONTACT POWER TRANSMISSION/RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/168873
Kind Code:
A1
Abstract:
To provide a non-contact power transmission/reception device having excellent power transmission/reception efficiency, while preventing a current from flowing backward to the transmission power supply side, said current having been generated due to a power reception voltage (power) when receiving power.
The present invention is configured by being provided with: a power transmission/reception coil for transmitting or receiving power; a resonant capacitor constituting a resonant circuit with the power transmission/reception coil; a power transmission/reception circuit, which outputs transmission power to the power transmission/reception coil, and to which reception power is inputted from the power transmission/reception coil; a power supply unit that supplies transmission power to the power transmission/reception coil via the power transmission/reception circuit; a switch circuit that performs switching between, via the power transmission/reception circuit, the transmission power supply and the reception power output; and a control circuit that controls the switch circuit. The switch circuit prevents the reception power from being inputted to the power supply unit.
Inventors:
ICHIKAWA KATSUHIDE (JP)
Application Number:
PCT/JP2016/087579
Publication Date:
October 05, 2017
Filing Date:
December 16, 2016
Export Citation:
Assignee:
HITACHI MAXELL (JP)
International Classes:
H02J50/10; H01F38/14; H02J7/00; H02J50/80
Domestic Patent References:
| WO2012133446A1 | 2012-10-04 | |||
| WO2014203346A1 | 2014-12-24 | |||
| WO2014073161A1 | 2014-05-15 |
Foreign References:
| JP2012170243A | 2012-09-06 | |||
| JP2013013318A | 2013-01-17 | |||
| JP2015144538A | 2015-08-06 | |||
| JP2011061893A | 2011-03-24 |
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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