Non-contact power supply apparatus

Patent metadata

Field	Value
Publication number	US-9906048-B2
Application number	US-201314654550-A
Country	US
Kind code	B2
Filing date	Dec 26, 2013
Priority date	Dec 28, 2012
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A non-contact power supply apparatus includes a first coil, a second coil opposed to the first coil, and a sensor. The sensor includes an insulator, transmitting main antenna parts, transmitting sub antenna parts, a transmitting circuit, receiving main antenna parts, receiving sub antenna parts, and a receiving circuit.

First claim

The invention claimed is:

1. A non-contact power supply apparatus comprising:
a first coil for receiving power from a power transmitting circuit;
a second coil opposed to the first coil for receiving the power from the first coil in a non-contact manner; and
a sensor including:
a plate-like insulator disposed between the first coil and the second coil;
a transmitting main antenna part formed, in a straight shape, on a first face of the insulator;
a transmitting sub antenna part formed on the first face of the insulator, intersecting the transmitting main antenna part, and electrically connected to the transmitting main antenna part;
a transmitting circuit electrically connected to the transmitting main antenna part, and transmitting a signal;
a receiving main antenna part formed, in a straight shape, on a second face, which is opposite the first face, of the insulator;
a receiving sub antenna part formed on the second face of the insulator, intersecting the receiving main antenna part, and electrically connected to the receiving main antenna part; and
a receiving circuit electrically connected to the receiving main antenna part,

wherein the receiving circuit receives the signal through the receiving main antenna part and the receiving sub antenna part, and senses an object, except the insulator, between the first coil and the second coil, based on a change in a reception intensity of the signal received.

2. The non-contact power supply apparatus of claim 1 , wherein the transmitting main antenna part is orthogonal to the receiving main antenna part.

3. The non-contact power supply apparatus of claim 1 , wherein
each of the transmitting sub antenna part and the receiving sub antenna part is in a straight shape,
the transmitting sub antenna part is orthogonal to the transmitting main antenna part, and
the receiving sub antenna part is orthogonal to the receiving main antenna part.

4. The non-contact power supply apparatus of claim 1 , wherein
the transmitting main antenna part is one of a plurality of transmitting main antenna parts, the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, the receiving main antenna part is one of a plurality of receiving main antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
each of the transmitting sub antenna parts does not overlap the transmitting main antenna parts adjacent to the transmitting sub antenna part, and
each of the receiving sub antenna parts does not overlap the receiving main antenna parts adjacent to the receiving sub antenna part.

5. The non-contact power supply apparatus of claim 4 , wherein
when the insulator is perspectively viewed from the first coil, each of the transmitting sub antenna parts does not overlap any of the receiving main antenna parts, and each of the receiving sub antenna parts does not overlap any of the transmitting main antenna parts.

6. The non-contact power supply apparatus of claim 1 , wherein the change in the reception intensity of the signal is a change in a reception intensity detected at a frequency higher than a resonance frequency of the transmitting sub antenna part and the receiving sub antenna part.

7. The non-contact power supply apparatus of claim 1 , wherein the change in the reception intensity of the signal is a change in a reception intensity detected at a frequency higher than a resonance frequency of the transmitting main antenna part and the receiving main antenna part.

8. The non-contact power supply apparatus of claim 1 , wherein
the transmitting main antenna part is one of a plurality of transmitting main antenna parts, the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, the receiving main antenna part is one of a plurality of receiving main antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
the transmitting circuit sequentially transmits a signal to the plurality of transmitting main antenna parts, and sequentially outputs the signal through the transmitting main antenna parts and the transmitting sub antenna parts connected to the transmitting main antenna parts, and
the receiving circuit sequentially receives the signal from the plurality of receiving main antenna parts through the receiving main antenna parts and the receiving sub antenna parts connected to the receiving main antenna parts.

9. The non-contact power supply apparatus of claim 1 , wherein each of the transmitting sub antenna part and the receiving sub antenna part is in an arc shape.

10. The non-contact power supply apparatus of claim 9 , wherein
the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
adjacent ones of the transmitting sub antenna parts are formed so that arc directions thereof are 180° different from each other, and
adjacent ones of the receiving sub antenna parts are formed so that arc directions thereof are 180° different from each other.

11. The non-contact power supply apparatus of claim 1 , wherein
the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
adjacent ones of the transmitting sub antenna parts are line symmetrical with each other, and
adjacent ones of the receiving sub antenna parts are line symmetrical with each other.

12. The non-contact power supply apparatus of claim 1 , wherein
the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
adjacent ones of the transmitting sub antenna parts are non-parallel to each other, and
adjacent ones of the receiving sub antenna parts are non-parallel to each other.

13. The non-contact power supply apparatus of claim 1 , wherein
the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts,
each of the transmitting sub antenna parts and the receiving sub antenna parts is in a straight shape,
each of the transmitting sub antenna parts extends in a direction at 45° with respect to the transmitting main antenna part, and
each of the receiving sub antenna parts extends in a direction at 45° with respect to the receiving main antenna part.

14. The non-contact power supply apparatus of claim 1 , wherein
the transmitting sub antenna part is one of a plurality of transmitting sub antenna parts, and the receiving sub antenna part is one of a plurality of receiving sub antenna parts, and
when the insulator is perspectively viewed from the first coil, part of each of the receiving sub antenna parts enters a region surrounded by adjacent ones of the transmitting sub antenna parts, and part of each of the transmitting sub antenna parts enters a region surrounded by adjacent ones of the receiving sub antenna parts.

15. A non-contact power supply apparatus comprising:
a first coil for receiving power from a power transmitting circuit;
a second coil opposed to the first coil for receiving the power from the first coil in a non-contact manner; and
a sensor including:
a plate-like insulator disposed between the first coil and the second coil;
a transmitting main antenna part formed, in a straight shape, on a first face of the insulator;
a transmitting sub antenna part formed on the

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Werner Steffen
• Iwamiya Hiroki
• Higashiyama Koji

Classifications

• H02J50/12 Primary

  of the resonant type · CPC title

• H01F38/14

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H02J50/60

  responsive to the presence of foreign objects, e.g. detection of living beings · CPC title

• H02J7/025

  Electricity · mapped topic