WIRELESS POWER TRANSMISSION APPARATUS

• US 20110140543A1
• Filed: 12/14/2010
• Published: 06/16/2011
• Est. Priority Date: 12/14/2009
• Status: Active Grant

• Current Assignee: Pantech Wireless, LLC (Ideahub, Inc.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Nam Yun, Park, Eun Seok, Kwon, Sang Wook, Hong, Young Tack, RYU, Young Ho
• Granted Patent: US 9,178,388 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

Provided is a wireless power transmission apparatus, including a source unit including a power resonator to transmit a wireless power to a target apparatus, and a near field controller to control a direction of a magnetic field of the power resonator.

Claims

1. A wireless power transmission apparatus, comprising:

a source unit including a power resonator to transmit wireless power to a target apparatus; and

a near field controller to control a direction of a magnetic field of the power resonator.

2. The wireless power transmission apparatus of claim 1, wherein at least a portion of the near field controller has a High Impedance Surface (HIS) characteristic.

3. The wireless power transmission apparatus of claim 1, wherein the near field controller controls a direction of a magnetic field of the source unit based on a location of the target apparatus.

4. The wireless power transmission apparatus of claim 1, wherein the near field controller is designed so that a magnetic field of the source unit has an in-phase characteristic with respect to the near field controller.

5. The wireless power transmission apparatus of claim 1, wherein the near field controller comprises:

a side focusing unit to control a direction of a side magnetic field of the source unit; and

a rear surface focusing unit to control a direction of a rear surface magnetic field of the source unit.

6. The wireless power transmission apparatus of claim 5, wherein the near field controller further comprises a direction adjusting unit to adjust a direction of the side focusing unit and a direction of the rear surface focusing unit.

7. The wireless power transmission apparatus of claim 6, wherein the near field controller controls the direction adjusting unit based on a location of a target resonator in the target apparatus.

8. The wireless power transmission apparatus of claim 1, wherein the near field controller moves relative to the source unit.

9. The wireless power transmission apparatus of claim 8, wherein the near field controller moves according to a location of a target resonator in the target apparatus.

10. A method of transmitting wireless power, the method comprising:

transmitting the wireless power from a source unit to a target apparatus; and

controlling a direction of a magnetic field of the source unit with a near field controller.

11. The method of claim 10, wherein the controlling of the direction of the magnetic field comprises moving the near field controller relative to the source unit.

12. The method of claim 11, wherein the near field controller is moved according to a location of a target resonator in the target apparatus.

13. The method of claim 10, wherein at least a portion of the near field controller has a High Impedance Surface (HIS) characteristic.

14. The method of claim 10, wherein the near field controller controls a direction of the magnetic field based on a location of the target apparatus.