WIRELESS POWER TRANSMITTER

• US 20130241305A1
• Filed: 03/15/2013
• Published: 09/19/2013
• Est. Priority Date: 03/19/2012
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: JUNG, Woo Kil, BAE, Su Ho, KIM, Hyoung Rae
• Granted Patent: US 9,634,731 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Disclosed is a wireless power transmitter. The wireless power transmitter for transmitting power to a wireless power receiver in a wireless scheme, includes a transmission circuit unit converting power supplied from a power supply unit into power having a frequency for resonance; a transmission induction coil coupling the converted power; and a transmission resonance coil disposed adjacent to the transmission induction coil to transfer the coupled power from the transmission induction coil to the wireless power receiver using the resonance, wherein the transmission circuit unit is vertically spaced apart from the transmission resonance coil.

Claims

1. A wireless power transmitter for transmitting power to a wireless power receiver in a wireless scheme, the wireless power transmitter comprising:

a transmission circuit unit converting power supplied from a power supply unit into power having a frequency for resonance;

a transmission induction coil coupling the converted power; and

a transmission resonance coil disposed adjacent to the transmission induction coil to transfer the coupled power from the transmission induction coil to the wireless power receiver using the resonance,

wherein the transmission circuit unit is vertically spaced apart from the transmission resonance coil.

2. The wireless power transmitter of claim 1, further comprising:

a first substrate on which the transmission induction coil is disposed; and

a second substrate vertically spaced apart from the first substrate and on which the transmission circuit unit is disposed.

3. The wireless power transmitter of claim 2, further comprising a shielding unit protecting the transmission circuit unit by changing a direction of a magnetic field formed in the transmission resonance coil.

4. The wireless power transmitter of claim 3, wherein the shielding unit is disposed along an outer contour line of the second substrate and has a cylindrical structure.

5. The wireless power transmitter of claim 4, further comprising a receiving unit having the cylindrical structure to mount the shielding unit,

wherein the receiving unit is connected to the first substrate by at least one support member.

6. The wireless power transmitter of claim 1, further comprising a power connecting unit receiving the power supplied from the power supply unit and transferring the power to the transmission circuit unit.

7. The wireless power transmitter of claim 6, wherein the power connecting unit is disposed on the first substrate.

8. The wireless power transmitter of claim 1, wherein the transmission resonance coil is inclined at a predetermined angle with respect to a horizontal plane.

9. The wireless power transmitter of claim 8, wherein one lateral side of the transmission resonance coil is inclined at a preset angle toward a charging region to be used.

10. The wireless power transmitter of claim 9, wherein the preset angle is in a range of 3°

to 30°

.

11. The wireless power transmitter of claim 1, wherein a vertical distance between the transmission circuit unit and the transmission resonance coil is in a range of 5 mm to 25 mm.