WIRELESS POWER RECEIVING APPARATUS INCLUDING A SHIELDING FILM

• US 20110241613A1
• Filed: 03/22/2011
• Published: 10/06/2011
• Est. Priority Date: 03/31/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Jin Sung, Kim, Dong Zo, Kim, Nam Yun, Park, Eun Seok, Ryu, Young Ho, Kwon, Sang Wook, Hong, Young Tack, Park, Yun Kwon
• Application Number:
  US13/053,592
• Publication Number:
  US 20110241613A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01F 27/36 Electric or magnetic shields or screens movable for varying inductance H01F21/10
• CPC Class Codes: H01F 27/366 made of ferromagnetic material
• 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 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

Provided is a battery pack that includes a resonator to receive power wirelessly. A film, for shielding from a magnetic field that may be generated due to an eddy current, may be inserted between a battery and the resonator of the battery pack.

Claims

1. A wireless power receiving apparatus comprising:

a resonator to receive wireless power;

a battery to charge a power source using the wireless power received by the resonator; and

a film to shield against a magnetic field caused by an eddy current that occurs while the power source is charged.

2. The wireless power receiving apparatus of claim 1, wherein the film is disposed between the resonator and the battery, and a size of the film is greater than a size of the battery.

3. The wireless power receiving apparatus of claim 1, wherein the film is disposed between the resonator and the battery to contact with a rear cover of a device, and a size of the film is greater than a size of the battery.

4. The wireless power receiving apparatus of claim 1, wherein the film is disposed between the resonator and the battery to cover an entire area except for an area receiving the magnetic field of the resonator, and a size of the film is greater than a size of the battery.

5. The wireless power receiving apparatus of claim 1, wherein, when a resonance frequency of the resonator is changed by the film, the changed resonance frequency is corrected by adjusting at least one of a capacitance of a capacitor and an inductance of an inductor, of the resonator.

6. The wireless power receiving apparatus of claim 1, wherein the resonator is a three-dimensional (3D) type resonator that has thin film resonators disposed in parallel.

7. The wireless power receiving apparatus of claim 1, further comprising a plurality of circuit boards that are configured to perform operations of a device,

wherein the film is disposed between the resonator and the plurality of circuit boards.

8. A device comprising:

a resonator configured to receive power wirelessly from a source;

a battery configured to charge a power source using the wireless power received by the resonator;

a plurality of circuits boards configured to perform operations of the device; and

a film configured to reduce the impact of an eddy current of the resonator on the battery and the plurality of circuit boards,

wherein the film is disposed on a top surface of the resonator, and the battery and the plurality of circuit boards are disposed on a top surface of the film.

9. The device of claim 8, further comprising a housing that houses the plurality of circuit boards and the battery.

10. The device of claim 8, wherein the film has a size that is greater than the size of battery and the plurality of circuit boards

11. The device of claim 8, wherein, when the resonance frequency of the resonator is changed due to the film, the resonator is configured to be adjusted to correct the changed resonance frequency by adjusting at least one of a capacitance of a capacitor and an inductance of an inductor, of the resonator.

12. The device of claim 8, wherein the resonator comprises a plurality of thin film resonators disposed in parallel to each other, and each is configured to receive power wirelessly from the source.

13. The device of claim 8, wherein the film is configured to reduce the impact of the eddy current which occurs when the battery is charging the power source, the plurality of circuit boards are in operation, and the resonator is receiving power wirelessly.