WIRELESS ENERGY TRANSFER SYSTEMS

• US 20130175875A1
• Filed: 02/21/2013
• Published: 07/11/2013
• Est. Priority Date: 09/27/2008
• Status: Active Grant

• Current Assignee: WiTricity Corporation
• Original Assignee: WiTricity Corporation
• Inventors: Kurs, Andre B., Karalis, Aristeidis, Kesler, Morris P., Campanella, Andrew J., Hall, Katherine L., Kulikowski, Konrad J., Li, Qiang, Soljacic, Marin
• Granted Patent: US 8,629,578 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• 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: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00304 Overcurrent protection
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A wireless power transfer system for computer peripherals, includes a source magnetic resonator, integrated into a source station and connected to a power source and power and control circuitry, and a device magnetic resonator, integrated into a computer peripheral wherein power is transferred non-radiatively from the source magnetic resonator to the device magnetic resonator, and wherein the source magnetic resonator is configured to transfer power during predefined intervals.

Claims

1. A wireless power transfer system for computer peripherals, comprising:

a source magnetic resonator, integrated into a source station and connected to a power source and power and control circuitry, and

a device magnetic resonator, integrated into a computer peripheral;

wherein power is transferred non-radiatively from the source magnetic resonator to the device magnetic resonator, and wherein the source magnetic resonator is configured to transfer power during predefined intervals.

2. The system of claim 1, wherein the source magnetic resonator is configured to transfer power when the computer peripheral is not in use.

3. The system of claim 1, wherein the source magnetic resonator is configured to transfer power during predefined times of a day.

4. The system of claim 1, wherein the source magnetic resonator is configured to transfer power when the computer peripheral is within an energy transfer range of the source.

5. The system of claim 1, wherein the device magnetic resonator comprises shielding to reduce a magnetic field interaction with lossy materials forming a part of the peripheral.

6. The system of claim 1, wherein the computer peripheral is powered directly by the energy transferred to the device magnetic resonator.

7. A wirelessly powered computer peripheral, comprising:

a device magnetic resonator, and

a repeater resonator,

wherein the repeater resonator is positioned to enable the coupling to a second computer peripheral.

8. The peripheral of claim 7, wherein the peripheral is a computer keyboard.

9. The peripheral of claim 8, wherein the second peripheral is a computer mouse and the repeater resonator is positioned to enable the transfer of power to the computer mouse positioned on one side of the keyboard.

10. The peripheral of claim 7, wherein the peripheral is a touch surface.

11. The peripheral of claim 7, wherein the computer peripheral includes at least one rechargeable battery that is charged by a wireless power transfer system.

12. The peripheral of claim 7, wherein the computer peripheral includes at least one energy storage unit that is energized by a wireless power transfer system.

13. The peripheral of claim 7, wherein the computer peripheral includes at least one super capacitor that is charged by a wireless power transfer system.

14. A wirelessly powered computer peripheral, comprising:

a magnetic resonator,

wherein the magnetic resonator is configurable to operate as a device resonator for capturing energy and delivering power to the computer peripheral and as a repeater resonator for enabling energy transfer to another computer peripheral from an external wireless energy source.

15. The computer peripheral of claim 14, wherein the magnetic resonator is configurable to operate simultaneously as a device resonator and a repeater resonator.

16. The computer peripheral of claim 14, wherein the magnetic resonator may be periodically switched from a repeater function to an energy capture function.

17. The computer peripheral of claim 14, wherein the peripheral is a computer keyboard.

18. The computer peripheral of claim 14, wherein the peripheral is a monitor.

19. The computer peripheral of claim 14, wherein the peripheral comprises a touch surface.

20. The computer peripheral of claim 14, wherein the peripheral comprises a light.

21. The computer peripheral of claim 14, wherein the peripheral is at least one of a smart phone, a tablet computer, a game console and a controller.

22. The computer peripheral of claim 14, wherein the peripheral is powered directly by the energy transferred to the device magnetic resonator.

23. The computer peripheral of claim 14, wherein the peripheral comprises at least one rechargeable battery that is charged by a wireless energy source.

24. The computer peripheral of claim 14, wherein the peripheral comprises at least one energy storage unit that is energized by the wireless energy source.

25. The computer peripheral of claim 14, wherein the peripheral includes at least one super capacitor that is charged by the wireless energy source.