MINIATURE WIRELESS POWER RECEIVER MODULE

• US 20140070762A1
• Filed: 09/10/2012
• Published: 03/13/2014
• Est. Priority Date: 09/10/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Jatupum Jenwatanavet, Nikhil Jain, Zhen Ning Low
• Inventors: JENWATANAVET, Jatupum, LOW, Zhen Ning, JAIN, Nikhil
• Granted Patent: US 9,509,167 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/0037 for power transfer
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An apparatus for wirelessly receiving power comprises a battery at least partially covered by magnetic material and a radio frequency (RF) charge energy receiving antenna surrounding the magnetic material and electrically coupled to the battery through a circuit card assembly (CCA).

Claims

1. An apparatus for wirelessly receiving power, comprising:

a battery at least partially covered by magnetic material; and

a radio frequency (RF) charge energy receiving antenna surrounding the magnetic material and electrically coupled to the battery through a circuit card assembly (CCA).

2. The apparatus of claim 1, wherein the RF charge energy receiving antenna is a cylindrical coil surrounding the battery and the magnetic material.

3. The apparatus of claim 2, further comprising a radio frequency identification (RFID) antenna and RFID circuitry coupled to the CCA, the RFID antenna and RFID circuitry configured to identify the presence of the wireless power receiver to a charging device.

4. The apparatus of claim 3, wherein the CCA further comprises a charging circuit configured to provide battery charge state and battery temperature information to determine an amount of charging energy provided to the battery.

5. The apparatus of claim 4, wherein the RF charge energy receiving antenna, the battery surrounded by the magnetic material, the CCA, the RFID antenna and the RFID circuitry are integrated into a single module.

6. The apparatus of claim 5, wherein the RF charge energy receiving antenna is responsive to RF energy at a first frequency and the RFID antenna is responsive to RF energy at a second frequency.

7. The apparatus of claim 6, wherein the RF charge energy receiving antenna is responsive to RF energy at a frequency of approximately 6.78 MHz and the RFID antenna is responsive to RF energy at a frequency of approximately 13.56 MHz.

8. The apparatus of any of claims 1 to 7, wherein the magnetic material completely covers the battery.

9. The apparatus of any of claims 1 to 7, further comprising metal material located between the battery and the magnetic material.

10. The apparatus of any of claims 1 to 7, further comprising metal material located between the battery and the magnetic material, wherein the metal material and the magnetic material completely cover the battery.

11. An apparatus for wirelessly receiving power, comprising:

a battery; and

a radio frequency (RF) charge energy receiving antenna surrounding and electrically coupled to the battery through a circuit card assembly (CCA), the RF charge energy receiving antenna being a cylindrical coil surrounding the battery.

12. The apparatus of claim 11, further comprising magnetic material at least partially covering the battery, wherein the RF charge energy receiving antenna surrounds the magnetic material and the battery.

13. The apparatus of claim 12, further comprising a radio frequency identification (RFID) antenna and RFID circuitry coupled to the CCA, the RFID antenna and RFID circuitry configured to identify the presence of the wireless power receiver to a charging device.

14. The apparatus of claim 13, wherein the CCA further comprises a charging circuit configured to provide battery charge state and battery temperature information to determine an amount of charging energy provided to the battery.

15. The apparatus of claim 14, wherein the RF charge energy receiving antenna, the battery at least partially covered by the magnetic material, the CCA, the RFID antenna and the RFID circuitry are integrated into a single module.

16. The apparatus of claim 15, wherein the RF charge energy receiving antenna is responsive to RF energy at a first frequency and the RFID antenna is responsive to RF energy at a second frequency.

17. The apparatus of claim 16, wherein the RF charge energy receiving antenna is responsive to RF energy at a frequency of approximately 6.78 MHz and the RFID antenna is responsive to RF energy at a frequency of approximately 13.56 MHz.

18. The apparatus of any of claims 12 to 17, wherein the magnetic material completely covers the battery.

19. The apparatus of any of claims 12 to 17, further comprising metal material located between the battery and the magnetic material.

20. The apparatus of any of claims 12 to 17, wherein the metal material and the magnetic material completely cover the battery.