Wireless power transmission apparatus

• US 9,178,388 B2
• Filed: 12/14/2010
• Issued: 11/03/2015
• Est. Priority Date: 12/14/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Ryu, Young Ho, Park, Eun Seok, Kwon, Sang Wook, Hong, Young Tack, Kim, Nam Yun
• Primary Examiner(s): CAVALLARI, DANIEL J
• Application Number:
  US12/967,682
• Publication Number:
  US 20110140543A1
• Time in Patent Office: 1,785 Days
• US Class Current: 1/1
• 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 power resonator disposed between a substrate and a target apparatus and configured to transmit wireless power to the target apparatus; and

a material, configured to control a direction of a magnetic field of the power resonator,

wherein a portion of the material has a High Impedance Surface (HIS) such that a magnetic field of the power resonator is in-phase with the material.

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

3. The wireless power transmission apparatus of claim 1, wherein the material is designed so that a magnetic field of the power resonator is in-phase with respect to the material.

4. The wireless power transmission apparatus of claim 1, wherein the material comprises a U-shaped element comprising:

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

a rear surface portion configured to control a direction of a rear surface magnetic field of the power resonator.

5. The wireless power transmission apparatus of claim 4, wherein the material further comprises a direction adjusting portion configured to adjust a direction of the side portion and a direction of the rear surface portion.

6. The wireless power transmission apparatus of claim 5, wherein the material controls the direction adjusting portion based on a location of a target resonator in the target apparatus.

7. The wireless power transmission apparatus of claim 1, wherein the material moves relative to the power resonator.

8. The wireless power transmission apparatus of claim 7, wherein the material moves according to a location of a target resonator in the target apparatus.

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

transmitting the wireless power from a power resonator to a target apparatus; and

controlling a direction of a magnetic field of the power resonator with a material based on an in-phase characteristic of the magnetic field of the power resonator derived from a High Impedance Surface (HIS) of a portion of the material.

10. The method of claim 9, wherein the controlling of the direction of the magnetic field comprises moving the material relative to the power resonator.

11. The method of claim 10, wherein the material is moved according to a location of a target resonator in the target apparatus.

12. The method of claim 9, wherein the controlling comprises controlling the direction of the magnetic field of the power resonator with the material based on a location of the target apparatus.