Title:
POWER RECEIVING DEVICE, MOBILE OBJECT, AND WIRELESS POWER TRANSMISSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/203690
Kind Code:
A1
Abstract:
This power receiving device comprises: a power receiving antenna which wirelessly receives AC power from a power transmitting antenna in a power transmitting device; a power receiving circuit which converts the AC power received by the power receiving antenna into DC power and outputs the DC power; an impedance adjustment circuit which is disposed in a transmission line between a load that uses the DC power and the power receiving antenna and that can change the input impedance; and a power reception control circuit which controls the impedance adjustment circuit. The power reception control circuit sequentially changes the value of the input impedance of the impedance adjustment circuit to a value selected from a plurality of values, determines, from the plurality of values, the value at which the power supplied to the load is maximum, and sets and maintains the input impedance at the operating impedance value based on the determined value.
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Inventors:
HOSOI HIROYUKI
YAMAMOTO HIROSHI
KIKUCHI SATORU
MATSUGI TORU
AKINAKA MASANORI
NISHIKAWA AKIRA
YAMAMOTO HIROSHI
KIKUCHI SATORU
MATSUGI TORU
AKINAKA MASANORI
NISHIKAWA AKIRA
Application Number:
PCT/JP2020/013808
Publication Date:
October 08, 2020
Filing Date:
March 26, 2020
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J50/05; H02J7/00
Domestic Patent References:
| WO2017115624A1 | 2017-07-06 |
Foreign References:
| JP2019009981A | 2019-01-17 | |||
| JP2011120443A | 2011-06-16 | |||
| JP2013153640A | 2013-08-08 |
Attorney, Agent or Firm:
OKUDA Seiji (JP)
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