WIRELESS POWER SUPPLYING RACK

• US 20110175456A1
• Filed: 01/07/2011
• Published: 07/21/2011
• Est. Priority Date: 01/15/2010
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kozakai, Osamu
• Granted Patent: US 8,704,407 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Disclosed herein is a wireless power supplying rack, including: a power transmission device adapted to transmit power to be supplied; a repeater device adapted to repeat the transmission power of the power transmission device; a power reception device adapted to receive the power repeated by the repeater device; and a main body in which a load to which the power received at least by the power reception device from between the power reception device and the repeater device is supplied is disposed; at least the repeater device and the power reception device from among the power transmission device, repeater device and power reception device being incorporated in the main body; wherein the power transmission device, the repeater device and the reception device have a first resonance element, a second resonance element and a third resonance element, respectively.

Claims

1. A wireless power supplying rack, comprising:

a power transmission device adapted to transmit power to be supplied;

a repeater device adapted to repeat the transmission power of said power transmission device;

a power reception device adapted to receive the power repeated by said repeater device; and

a main body in which a load to which the power received at least by said power reception device from between said power reception device and said repeater device is supplied is disposed;

at least said repeater device and said power reception device from among said power transmission device, repeater device and power reception device being incorporated in said main body;

said power transmission device including

a first resonance element for receiving the power supplied thereto and transmitting the received power;

said repeater device including

a second resonance element for receiving the power transmitted thereto from said first resonance element through a magnetic field resonance relationship and transmitting the received power;

said reception device including

a third resonance element for receiving the power transmitted thereto from said repeater device through a magnetic field resonance relationship.

2. The wireless power supplying rack according to claim 1, wherein said main body includes

a plurality of frames disposed in a predetermined spaced relationship from each other to form a skeleton such that said power reception device is incorporated in one of said frames while said repeater device is incorporated in another one of said frames.

3. The wireless power supplying rack according to claim 2, wherein each of said first, second and third resonance elements is formed from a coil, and each of the frames is formed from a framework of a non-conductive material of a loop shape in such a manner as to form a space at a central portion thereof and said coil which forms each of the resonance elements forms a loop in said framework.

4. The wireless power supplying rack according to claim 3, wherein said power transmission device includes a power supplying element to which the power from a power supply is supplied and which is coupled to the resonance element by electromagnetic induction and said power reception device includes a power supplying element which is coupled to said third resonance element by electromagnetic induction such that the power received by said third resonance element is supplied to said power reception device, and each of the power supplying elements is formed from a coil and is incorporated in the frame together with the coil which forms the resonance element.

5. The wireless power supplying rack according to claim 1, wherein said main body includes

a plurality of frames disposed in a predetermined spaced relationship from each other to form a skeleton such that said power reception device is incorporated in one of said frames which is disposed on one side portion of said main body while said power transmission device is incorporated in another one of said frame which is disposed on the other side portion of said main body in an opposing relationship to the one side portion and said repeater device is incorporated in at least one of said frames which is disposed between the one side portion and the other side portion of said main body.

6. The wireless power supplying rack according to claim 5, wherein each of said first, second and third resonance elements is formed from a coil, and each of the frames is formed from a framework of a non-conductive material of a loop shape in such a manner as to form a space at a central portion thereof and said coil which forms each of the resonance elements forms a loop in said framework.

7. The wireless power supplying rack according to claim 6, wherein said power transmission device includes a power supplying element to which the power from a power supply is supplied and which is coupled to the resonance element by electromagnetic induction and said power reception device includes a power supplying element which is coupled to said third resonance element by electromagnetic induction such that the power received by said third resonance element is supplied to said power reception device, and each of the power supplying elements is formed from a coil and is incorporated in the frame together with the coil which forms the resonance element.

8. The wireless power supplying rack according to claim 1, wherein said main body includes

a plurality of frames disposed in a predetermined spaced relationship from each other to form a skeleton such that said power reception device is incorporated in one of said frames which is disposed on one side portion of said main body and said repeater device is incorporated in plural ones of said frames disposed in a predetermined spaced relationship from the one end portion of said main body to the other end portion of said main body which is opposed to the one end portion while said power transmission device is incorporated in a non-skeleton frame disposed outside said main body such that said power transmission device is opposed to the frame of the other end portion.

9. The wireless power supplying rack according to claim 8, wherein each of said first, second and third resonance elements is formed from a coil, and each of the frames is formed from a framework of a non-conductive material of a loop shape in such a manner as to form a space at a central portion thereof and said coil which forms each of the resonance elements forms a loop in said framework.

10. The wireless power supplying rack according to claim 9, wherein said power transmission device includes a power supplying element to which the power from a power supply is supplied and which is coupled to the resonance element by electromagnetic induction and said power reception device includes a power supplying element which is coupled to said third resonance element by electromagnetic induction such that the power received by said third resonance element is supplied to said power reception device, and each of the power supplying elements is formed from a coil and is incorporated in the frame together with the coil which forms the resonance element.

11. The wireless power supplying rack according to claim 8, wherein said non-skeleton frame is disposed on one of a wall, a floor and a ceiling of a room, and said main body is disposed such that the frame in which said repeater device is incorporated is disposed in an opposing relationship to said non-skeleton frame.

12. The wireless power supplying rack according to claim 1, wherein said power supplying device includes

a power supplying element to which the power from a power supply is supplied and which is coupled to said resonance element by electromagnetic induction.

13. The wireless power supplying rack according to claim 1, wherein said power reception device includes a power supplying element which is coupled to said third resonance element by electromagnetic induction such that the power received by said third resonance element is supplied to said power reception device.

14. The wireless power supplying rack according to claim 1, wherein said power transmission device includes a matching section having an impedance matching function at a power supplying point of said first resonance element.

15. The wireless power supplying rack according to claim 1, wherein said power reception device includes a matching section having an impedance matching function at a connecting portion between said third resonance element and a load.