Non-contact power supply system and non-contact power supply method

Patent metadata

Field	Value
Publication number	US-9571162-B2
Application number	US-201114342761-A
Country	US
Kind code	B2
Filing date	Sep 9, 2011
Priority date	Sep 9, 2011
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A wireless power transfer system includes a transmission device that performs power supply by wireless power transfer to a power receiving device, a position acquiring section that acquires a current position of the power receiving device, and a control section that performs control to authorize the power supply in a case where the power receiving device is in a preset area and to not authorize the power supply in a case where the power receiving device is outside the preset area.

First claim

The invention claimed is:

1. A wireless power transfer system comprising:
a transmission device that supplies power by wireless power transfer to a power receiving device;
a position acquiring section that acquires a current position of the power receiving device;
an authentication section that performs authentication of the power receiving device based on authentication information that is transmitted from the power receiving device; and
a control section that:
authorizes the power supply in a case where the power receiving device is within a predetermined three-dimensional area without performing the authentication,
authorizes the power supply in a case where the power receiving device is outside the three-dimensional area and the authentication has succeeded, and
prohibits the power supply in a case where the power receiving device is outside the three-dimensional area and the authentication has not succeeded.

2. The wireless power transfer system according to claim 1 , wherein
the position acquiring section comprises a plurality of antennas arranged adjacent to each other, and
the position acquiring section:
receives a positioning signal from the power receiving device with the antennas,
determines a direction α of the power receiving device from the position acquiring section based on a phase difference Δθ of the positioning signal received with each of the plurality of antennas, and
acquires a current position of the power receiving device based on the determined direction α.

3. The wireless power transfer system according to claim 1 , wherein
the power receiving device comprises a GPS, and
the position acquiring section obtains a current position of the power receiving device that the power receiving device has acquired with the GPS and transmitted to the position acquiring section.

4. The wireless power transfer system according to claim 1 , wherein
the control section authorizes the power supply in a case where the transmission device corresponds to specifications relating to receiving power of the power receiving device.

5. A wireless power transfer method for supplying power by wireless power transfer to a power receiving device, the method comprising:
acquiring a current position of the power receiving device,
performing authentication of the power receiving device based on authentication information that is transmitted from the power receiving device,
authorizing the power supply in a case where the power receiving device is within a predetermined three-dimensional area without performing the authentication,
authorizing the power supply in a case where the power receiving device is outside the three-dimensional area and the authentication has succeeded, and
prohibiting the power supply in a case where the power receiving device is outside the three-dimensional area and the authentication has not succeeded.

Assignees

• Masaoka Shinya
• Chugoku Electric Power

Inventors

• Masaoka Shinya

Classifications

• H02J50/12

  of the resonant type · CPC title

• H02J50/90 Primary

  involving detection or optimisation of position, e.g. alignment · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02J17/00

  Electricity · mapped topic

• H04B5/0037 Primary

  Electricity · mapped topic