RESONANT CAVITY MODE ENABLED WIRELESS POWER TRANSFER

• US 20160164301A1
• Filed: 04/28/2015
• Published: 06/09/2016
• Est. Priority Date: 12/08/2014
• Status: Active Grant

• Current Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Original Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Inventors: Sample, Alanson P., Chabalko, Matthew J.
• Granted Patent: US 10,707,685 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/27 characterised by the type of receiving antennas, e.g. rectennas
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

An embodiment provides a method of wireless power transmission, including: powering a transmitter that produces electromagnetic waves in a three dimensional structure; selecting a transmission frequency that is a resonance frequency for the three dimensional structure; and transmitting, using the transmitter, electromagnetic waves within the three dimensional structure on the transmission frequency selected. Other systems, methods, apparatuses and products are described and claimed.

Claims

1. A method of wireless power transmission, comprising:

powering a transmitter that produces electromagnetic waves in a three dimensional structure;

selecting a transmission frequency that is a resonance frequency for the three dimensional structure; and

transmitting, using the transmitter, electromagnetic waves within the three dimensional structure on the transmission frequency selected.

2. The method of claim 1, wherein the selecting comprises selecting two or more transmission frequencies that are resonance frequencies for the three dimensional structure.

4. The method of claim 1, wherein the three dimensional structure is substantially enclosed.

5. The method of claim 1, wherein the three dimensional structure is a metallic structure.

6. The method of claim 5, wherein the metallic structure is a substantially complete enclosure.

7. The method of claim 1, wherein:

the powering comprises powering two or more transmitters;

the transmitting comprises transmitting with the two or more transmitters; and

the two or more transmitters are placed at different locations within the three dimensional structure.

8. The method of claim 7, wherein the two or more transmitters each transmit on a unique resonance frequency.

9. The method of claim 1, wherein the transmission frequency selected is less than 200 Mz.

3. The method of claim 3, wherein the two or more frequencies are transmitted at different times.

10. An apparatus for wireless power transmission, comprising:

a power source; and

a transmitter operatively coupled to the power source, the transmitter being placed in a three dimensional structure and producing electromagnetic waves;

wherein the transmitter transmits at a transmission frequency that is a resonance frequency for the three dimensional structure.

11. The apparatus of claim 10, wherein the transmission frequency comprises two or more transmission frequencies that are resonance frequencies for the three dimensional structure.

12. The apparatus of claim 11, wherein the two or more frequencies are transmitted at different times.

13. The apparatus of claim 10, wherein:

the transmitter comprises two or more transmitters placed at different locations within the three dimensional structure.

14. The apparatus of claim 13, wherein the two or more transmitters each transmit on a unique resonance frequency.

15. A system for wireless power transmission, comprising:

a three dimensional structure;

a transmitter placed in the three dimensional structure;

a power source that powers the transmitter to produce electromagnetic waves in the three dimensional structure;

wherein the transmitter transmits at a transmission frequency that is a resonance frequency for the three dimensional structure.

16. The system of claim 15, wherein the transmission frequency comprises two or more transmission frequencies that are resonance frequencies for the three dimensional structure.

17. The system of claim 16, wherein the two or more frequencies are transmitted at different times.

18. The system of claim 15, wherein:

the transmitter comprises two or more transmitters placed at different locations within the three dimensional structure.

19. The system of claim 18, wherein the two or more transmitters each transmit on a unique resonance frequency.

20. An apparatus receiving wireless power, comprising:

a processor;

a memory storing instructions that are executable by the processor; and

a receiver that is coupled to the processor;

the receiver being tuned to receive wireless power transmitted at a resonance frequency for a three dimensional structure.

21. The apparatus of claim 20, wherein the receiver is tunable to more than one resonance frequency for the three dimensional structure.

22. The apparatus of claim 21, wherein the processor executes instructions to tune the receiver to a particular resonance frequency.

23. The apparatus of claim 21, further comprising:

a rechargeable battery coupled to the receiver; and

a wirelesses communication mechanism;

wherein the apparatus communicates with a transmission system providing the wireless power to the three dimensional structure using a resonant frequency.

24. The apparatus of claim 23, wherein the apparatus communicates at least a charging state to the transmission system.

25. The apparatus of claim 20, wherein the receiver is selected from the group consisting of a coil and a dipole.