INTEGRATED WIRELESS RESONANT POWER CHARGING AND COMMUNICATION CHANNEL

• US 20160134155A1
• Filed: 12/29/2015
• Published: 05/12/2016
• Est. Priority Date: 08/05/2008
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Bennett, James D.
• Granted Patent: US 10,483,801 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06Q 20/3674 involving authentication
• CPC Class Codes: G06Q 50/06 Energy or water supply
• 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 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y04S 50/12 Billing, invoicing, buying or selling transactions or other related activities, e.g. cost or usage evaluation

Abstract

A power delivery system wirelessly delivers electric power and a communication signal to a target device. The power delivery system includes a power transmitting unit having a power source operable to source alternating current power and a sending resonant coupling component operable to couple the alternating current power to a coil for wireless power transmission by a non-radiated magnetic field at a target resonant frequency. The power transmitting unit is capable of dynamically tuning the wireless power transmission to the target resonant frequency wherein the target resonant frequency is specified dynamically. A communication module couples to the power transmitting unit and is operable to couple the communication signal to the non-radiated magnetic field. Operations may include target device authentication, target resonant frequency information communication, billing, and device management.

Claims

1. A wireless powering device for providing wireless power to a target device, the wireless powering device comprising:

a power source;

a communication circuit configured to receive a wireless power communication from the target device and, based upon the wireless power communication, to determine a target resonant frequency to be used for transfer of wireless power to the target device; and

a resonant coupling component coupled to the power source and to the communication circuit, the resonant coupling component configured to receive information regarding the target resonant frequency, wherein the resonant coupling component is configured to be tuned to generate a wireless power transmission at the target resonant frequency to transfer wireless power to the target device.

2. The wireless powering device of claim 1, wherein the wireless power is transferred via a non-radiated magnetic field.

3. The wireless powering device of claim 1, wherein the wireless power is transferred via a radiated magnetic field.

4. The wireless powering device of claim 1, wherein:

the wireless power communication further comprises an indication of desired wireless power transmit level; and

the resonant coupling component is further configured to adjust transmit power of the wireless power transmission based upon the indication of desired wireless power transmit level.

5. The wireless powering device of claim 1, wherein the wireless power communication and the wireless power transmission are in a common frequency band.

6. The wireless powering device of claim 1, wherein the wireless power communication is a Near Field Communication (NFC).

7. The wireless powering device of claim 1, wherein the wireless power communication and the wireless power transmission are in differing frequency bands.

8. The wireless powering device of claim 6, wherein the wireless power communication is a Radio Frequency (RF) communication and the wireless power transmission is a non-radiated magnetic field.

9. The wireless powering device of claim 1, wherein the wireless power communication from the target device comprises simple power radiation.

10. The wireless powering device of claim 1, wherein:

the target resonant frequency is a dynamic tuning target; and

the resonant coupling component dynamically tunes to the target resonant frequency based upon closed loop wireless power communication with the target device.

11. The wireless powering device of claim 1, wherein the wireless power communication includes at least one of:

target device identity;

a requested target resonant frequency;

target device authentication information;

target device request for power delivery;

target device billing information;

target device power receipt level(s);

or

target device battery charge state.

12. The wireless powering device of claim 1, wherein the communication circuit is formed as an integrated circuit on a semi-conductive substrate.

13. The wireless powering device of claim 1, wherein the communication circuit is configured to communicate the target resonant frequency to the target device.

14. The wireless powering device of claim 1, wherein the resonant coupling component is configured to adjust the target resonant frequency based upon feedback received from the target device via the communication circuit.

15. The wireless powering device of claim 1, wherein the resonant coupling component is configured to select the target resonant frequency based upon target device authentication information.

16. A wireless powering device for providing wireless power to a target device, the wireless powering device comprising:

a power source;

a communication circuit configured to receive a wireless power communication from the target device and, based upon the wireless power communication, to determine a target operating parameter to be used for transfer of wireless power to the target device; and

a resonant coupling component coupled to the power source and to the communication circuit, the resonant coupling component configured to receive information regarding the target operating parameter, wherein the resonant coupling component is configured to be tuned to generate a wireless power transmission based upon the target operating parameter to transfer wireless power to the target device.

17. The wireless powering device of claim 16, wherein the target operating parameter relates to level of power delivery to the target device.

18. The wireless powering device of claim 17, wherein the resonant coupling component is configured to adjust its operating current based upon the target operating parameter.

19. The wireless powering device of claim 16, wherein the wireless power is transferred via a non-radiated magnetic field.

20. The wireless powering device of claim 16, wherein the wireless power is transferred via a radiated magnetic field.

21. The wireless powering device of claim 16, wherein:

the target operating parameter comprises an indication of desired wireless power transmit level; and

the resonant coupling component is further configured to adjust transmit power of the wireless power transmission based upon the indication of desired wireless power transmit level.

22. The wireless powering device of claim 16, wherein the wireless power communication and the wireless power transmission are in a common frequency band.

23. The wireless powering device of claim 16, wherein the wireless power communication is a Near Field Communication (NFC).

24. The wireless powering device of claim 16, wherein the wireless power communication and the wireless power transmission are in differing frequency bands.

25. The wireless powering device of claim 24, wherein the wireless power communication is a Radio Frequency (RF) communication and the wireless power transmission is a non-radiated magnetic field.

26. The wireless powering device of claim 16, wherein the wireless power communication from the target device comprises simple power radiation.

27. The wireless powering device of claim 16, wherein the wireless power communication includes at least one of:

target device identity;

a requested target resonant frequency;

target device authentication information;

target device request for power delivery;

target device billing information;

target device power receipt level(s);

or

target device battery charge state.

28. The wireless powering device of claim 16, wherein the communication circuit is formed as an integrated circuit on a semi-conductive substrate.

29. A wireless powering device for providing wireless power to a target device, the wireless powering device comprising:

an integrated circuit formed on a semi-conductive substrate including a communication circuit and a source power manager, the integrated circuit coupled to a sending resonant coupling component, wherein the communication circuit and/or the source power manager configured to;

receive a wireless power communication from the target device;

determine a target operating parameter to be used for transfer of wireless power to the target device based upon the wireless power communication; and

control the sending resonant coupling component to generate a wireless power transmission based upon the target operating parameter to transfer wireless power to the target device.

30. The wireless powering device of claim 29, wherein the sending resonant coupling component is further formed as part of the integrated circuit formed on the semi-conductive substrate.

31. The wireless powering device of claim 29, wherein the target operating parameter relates to level of power delivery to the target device.

32. The wireless powering device of claim 31, wherein communication circuit and/or the source power manager is configured to adjust operating current of the sending resonant coupling component based upon the target operating parameter.

33. The wireless powering device of claim 29, wherein the wireless power is transferred via a non-radiated magnetic field.

34. The wireless powering device of claim 29, wherein the wireless power is transferred via a radiated magnetic field.

35. The wireless powering device of claim 29, wherein:

the target operating parameter comprises an indication of desired wireless power transmit level; and

wherein the source power manager is further configured to control the sending resonant coupling component to adjust transmit power of the wireless power transmission based upon the indication of desired wireless power transmit level.

36. The wireless powering device of claim 29, wherein the wireless power communication and the wireless power transmission are in a common frequency band.

37. The wireless powering device of claim 29, wherein the wireless power communication is a Near Field Communication (NFC).

38. The wireless powering device of claim 29, wherein the wireless power communication and the wireless power transmission are in differing frequency bands.

39. The wireless powering device of claim 38, wherein the wireless power communication is a Radio Frequency (RF) communication and the wireless power transmission is a non-radiated magnetic field.

40. The wireless powering device of claim 29, wherein the wireless power communication from the target device comprises simple power radiation.

41. The wireless powering device of claim 29, wherein the wireless power communication includes at least one of:

target device identity;

a requested target resonant frequency;

target device authentication information;

target device request for power delivery;

target device billing information;

target device power receipt level(s);

or

target device battery charge state.