WIRELESS POWERING AND CHARGING STATION

• US 20130038138A1
• Filed: 10/12/2012
• Published: 02/14/2013
• Est. Priority Date: 01/14/2008
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Widmer, Hanspeter, Sieber, Lukas, Cook, Nigel P.
• Application Number:
  US13/651,324
• Publication Number:
  US 20130038138A1
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/248 provided with an AC/DC converting device, e.g. rectennas
• 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 50/10 using inductive coupling
• 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 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

A base including a magnetically resonant antenna therein for relaying energy to a portable device.

Claims

1. An apparatus for wireles sly charging an electronic device, the apparatus comprising:

a holder having at least one surface that is shaped to contact at least one outer surface of the electronic device, the portable electronic device including a wireless power receive element coupled to a load; and

an antenna located within the holder, the antenna having an inductive-capacitive value that is tuned to a frequency and configured to receive power from a transmitter via a wireless field, and further configured to focus wireles sly received power to a power level sufficient to charge or power the load.

2. The apparatus of claim 1, wherein the wireless field comprises a magnetically coupled resonance field.

3. The apparatus of claim 2, wherein focusing the wirelessly received power improves an efficiency of the magnetically couple resonance field.

4. The apparatus of claim 2, wherein focusing the wireless received power increases a field density of the magnetically coupled resonance field.

5. The apparatus of claim 1, wherein the antenna further comprises an inductive loop coil and a capacitor, the inductive loop in series with the capacitor.

6. The apparatus of claim 5, wherein a Q value of the coil and the capacitor is substantially between 500 and 1000.

7. The apparatus of claim 5, wherein the coil and the capacitor are tuned to be substantially resonant with the wireless field.

8. The apparatus of claim 1, wherein the antenna is integrated into a base of the holder.

9. The apparatus of claim 8, wherein the perimeter of the holder is substantially circular.

10. The apparatus of claim 8, wherein inner surfaces of the holder are sized to mount a phone in the holder'"'"'s base.

11. A method of wirelessly charging an electronic device, the method comprising:

receiving power from a transmitter via a wireless field by an antenna located within a holder, the holder having at least one surface that is shaped to contact at least one outer surface of the electronic device, the portable electronic device including a wireless power receive element coupled to a load; and

focusing wirelessly received power to a power level sufficient to charge or power the load.

12. The method of claim 11, wherein receiving the power comprises receiving power from the transmitter via a magnetically coupled resonance field.

13. The method of claim 12, wherein focusing the wirelessly received power comprises focusing the wirelessly received power to improve an efficiency of the magnetically couple resonance field.

14. The method of claim 12, wherein focusing the wirelessly received power comprises focusing the wirelessly received power to increase a field density of the magnetically coupled resonance field.

15. The method of claim 11, wherein receiving the power comprises receiving the power by the antenna further comprising an inductive loop coil and a capacitor, the inductive loop in series with the capacitor, and the coil and the capacitor tuned to be substantially resonant with the wireless field.

16. An apparatus for wirelessly charging an electronic device, the apparatus comprising:

means for receiving power from a transmitter via a wireless field by an antenna located within a holder, the holder having at least one surface that is shaped to contact at least one outer surface of the electronic device, the portable electronic device including a wireless power receive element coupled to a load; and

means for focusing wirelessly received power to a power level sufficient to charge or power the load.

17. The apparatus of claim 16, wherein the wireless field comprises a magnetically coupled resonance field.

18. The apparatus of claim 16, wherein the antenna further comprises an inductive loop coil and a capacitor, the inductive loop in series with the capacitor.

19. The apparatus of claim 18, wherein the coil and the capacitor are tuned to be substantially resonant with the wireless field.

20. The apparatus of claim 16, wherein the antenna is integrated into a base of the holder.