ELECTRONIC DEVICE AND WIRELESS POWER RECEIVER EQUIPPED IN THE SAME

• US 20130093258A1
• Filed: 10/17/2012
• Published: 04/18/2013
• Est. Priority Date: 10/18/2011
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: LEE, Jung Oh
• Granted Patent: US 9,281,694 B2
• 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: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A wireless power receiver for receiving power from a wireless power transmitter using resonance according to the embodiment includes a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power, a reception induction coil coupled with the reception resonant coil for receiving the power, and a connecting unit, and the reception resonant coil includes at least one conductive line having one end and an opposite end being open with each other, and the connecting unit couples the one end and the opposite end of each conductive line with each other so that the reception resonant coil forms a closed loop.

Claims

1. A wireless power receiver for receiving power from a wireless power transmitter using resonance, the wireless power receiver comprising:

a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power;

a reception induction coil coupled with the reception resonant coil for receiving the power; and

a connecting unit,

wherein the reception resonant coil includes at least one conductive line having one end and an opposite end being open with each other, and

the connecting unit couples the one end and the opposite end of each conductive line with each other so that the reception resonant coil forms a closed loop.

2. The wireless power receiver of claim 1, further comprising an auxiliary connecting unit assisting coupling of the conductive lines which are open with each other.

3. The wireless power receiver of claim 2, wherein the auxiliary connecting unit is configured in a form of a jack or a pad.

4. The wireless power receiver of claim 1, wherein the connecting unit comprises a permanent magnet.

5. The wireless power receiver of claim 1, wherein the connecting unit comprises an elastic member.

6. The wireless power receiver of claim 5, wherein the elastic member comprises a polymer resin or a resin composite.

7. The wireless power receiver of claim 1, wherein the reception resonant coil comprises an inductor and a capacitor.

8. The wireless power receiver of claim 7, wherein the capacitor includes a variable capacitor for matching resonant frequency with the transmission resonant coil.

9. The wireless power receiver of claim 1, wherein the reception induction coil comprises an inductor and a capacitor.

10. The wireless power receiver of claim 1, further comprising a rectifier circuit converting AC power received from the reception induction coil into DC power and transferring the DC power to a load.

11. The wireless power receiver of claim 1, wherein a radius of the reception resonant coil is greater than a radius of the transmission resonant coil.

12. An electronic device equipped in the wireless power receiver of claim 1.

13. The electronic device of claim 12, wherein the electronic device comprises one of a headset, an earphone, and 3-D glasses.