Title:
POWER RECEPTION DEVICE AND POWER TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/037758
Kind Code:
A1
Abstract:
The present invention is provided with: a power reception coil (21A) to be coupled with a power transmission coil (11A) of a power transmission device (101); a rectifying circuit (221) having a diode (D1) and a transistor element (Q2), which are electrically connected to the power reception coil (21A), said rectifying circuit rectifying a high frequency alternating current flowing in the power reception coil (21A); output sections (Out1, Out2) that output, to a load (26), the current rectified by the rectifying circuit (221); a voltage detection circuit (24) that detects an output voltage Va; and a control circuit (25) that controls operations of the transistor element (Q2) on the basis of the output voltage Va. In the cases where the output voltage Va is equal to or smaller than a threshold value Va1, the control circuit (25) turns off the transistor element (Q2), and makes the rectifying circuit (221) perform rated rectifying operations, and in the cases where the voltage Va is equal to or larger than the threshold value Va2, the control circuit turns on the transistor element (Q2), and stops the rated rectifying operations.
Inventors:
HOSOTANI TATSUYA (JP)
Application Number:
PCT/JP2017/025704
Publication Date:
March 01, 2018
Filing Date:
July 14, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02J50/10
Domestic Patent References:
| WO2014132773A1 | 2014-09-04 | |||
| WO2007138690A1 | 2007-12-06 |
Foreign References:
| JP2015012761A | 2015-01-19 | |||
| JP2008035405A | 2008-02-14 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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