WIRELESS ENERGY TRANSFER SYSTEMS

• US 20130154389A1
• Filed: 02/21/2013
• Published: 06/20/2013
• 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 8,618,696 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 2200/18 Buses
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/20 AC to AC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2270/32 of electricity
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• 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 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H01F 38/14 : Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• 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 7/35 : with light sensitive cells
• CPC Class Codes: H03H 7/40 : Automatic matching of load impedance to source impedance
• CPC Class Codes: H04B 5/79 : for data transfer in combination with power transfer
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A wireless power supply includes a source magnetic resonator, connected to a power source and configured to exchange power wirelessly via a wireless power transfer signal with at least one device magnetic resonator integrated into at least one peripheral component of a computer and a processor configured to adjust the operating point of the wireless power supply wherein power is transferred non-radiatively from the wireless power supply to the at least one device magnetic resonator and wherein the power supply forms a part of the computer.

Claims

1. A wireless power supply comprising;

a source magnetic resonator, connected to a power source and configured to exchange power wirelessly via a wireless power transfer signal with at least one device magnetic resonator integrated into at least one peripheral component of a computer; and

a processor configured to adjust the operating point of the wireless power supply wherein power is transferred non-radiatively from the wireless power supply to the at least one device magnetic resonator and wherein the power supply forms a part of the computer.

2. The wireless power supply of claim 1, wherein the processor is configured to adjust a frequency of the wireless power transfer signal.

3. The wireless power supply of claim 1, wherein the processor is configured to adjust an impedance matching network of the wireless power source supply.

4. The wireless power supply of claim 1, wherein the processor is configured to adjust a power converter of the wireless power source supply.

5. The wireless power supply of claim 1, wherein the processor is configured to adjust an amplifier of the wireless power source supply.

6. The wireless power supply of claim 1, wherein the wireless power supply is configured to send wireless control signals to the at least one device resonator.

7. The wireless power supply of claim 1, wherein the wireless power source supply is configured to receive wireless signals from the at least one device resonator.

8. The wireless power supply of claim 1, further comprising the at least one device magnetic resonator integrated into at least one computer peripheral.

9. The wireless power supply of claim 8, wherein integrated device magnetic resonator comprises power and control circuitry.

10. The wireless power supply of claim 8, wherein the device magnetic resonator power and control circuitry comprises a processor.

11. The wireless power supply of claim 8, wherein the device magnetic resonator processor is configured to provide information to the wireless power supply.

12. The wireless power supply of claim 1, wherein the at least one computer peripheral comprises at least one energy storage unit.

13. The wireless power supply of claim 12, wherein the at least one energy storage unit is a battery.

14. The wireless power supply of claim 13, wherein the at least one energy storage unit is a supercapacitor.

15. The wireless power supply of claim 1, wherein the processor controls a battery charging circuit of at least one computer peripheral.

16. The wireless power supply of claim 1, further comprising at least one repeater resonator.

17. The wireless power supply of claim 16, wherein the at least one device magnetic resonator is configured to operate as a wireless source to at least one other magnetic resonator in an active area.

18. A wirelessly powered computer peripheral, comprising:

a tunable device magnetic resonator;

a means for transferring information wirelessly;

and a means for adjusting a parameter of the tunable device resonator.

19. The peripheral of claim 18, wherein the peripheral comprises a keyboard.

20. The peripheral of claim 18, wherein the peripheral comprises a mouse.

21. The peripheral of claim 18, wherein the peripheral comprises a touch surface.

22. 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 in a first active area and as a repeater resonator for improving energy transfer to another computer peripheral in a second active area.

23. The computer peripheral from claim 22, wherein the magnetic resonator is configurable to operate simultaneously as a device resonator and a repeater resonator.

24. The computer peripheral from claim 22, wherein the magnetic resonator is periodically switched from a repeater function to an energy capture function.

25. The computer peripheral from claim 22, wherein the peripheral comprises a keyboard.

26. The computer peripheral from claim 22, wherein the peripheral comprises a monitor.

27. The computer peripheral from claim 22, wherein the peripheral comprises a touch screen.