Wireless power repeater

• US 9,866,278 B2
• Filed: 08/10/2012
• Issued: 01/09/2018
• Est. Priority Date: 09/09/2011
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Lee, Jung Oh, Jung, Woo Kil
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Dominique, Emmanuel R
• Application Number:
  US14/344,023
• Publication Number:
  US 20140292100A1
• Time in Patent Office: 1,978 Days
• 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 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Disclosed is a wireless power repeater. The wireless power repeater repeats power between a wireless power transmitter and an electronic device. The wireless power repeater includes a charging container having at least one side, wherein the charging container has a form for receiving the electronic device, a repeating coil placed at one of the at least one side of the charging container to repeat the power between the wireless power transmitter and the electronic device using resonance.

Claims

1. A wireless power transmission system, comprising:

a power supply apparatus;

a wireless power transmitter; and

a wireless power repeater comprising a charging container and a repeating part,

wherein the charging container has a hexahedral box shape,

wherein the wireless power repeater repeats power between the wireless power transmitter and an electronic device,

wherein the repeating part comprises first to third repeating coils that are coupled with the wireless power transmitter by resonance,

wherein each of the first to third repeating coils comprises a conduction line wound repeatedly to have a spiral form,

wherein the charging container has a bottom and at least three sides and is configured to receive the electronic device,

wherein the first to third repeating coils are respectively disposed at the at least three sides of the charging container to repeat the power between the wireless power transmitter and the electronic device,

wherein the at least three sides of the charging container are arranged at an angle of 90 degrees to each other,

wherein the wireless power transmitter is disposed at the bottom of the charging container to transmit power to the electronic device positioned on the wireless power transmitter,

wherein the wireless power repeater is configured to transmit power to the electronic device positioned at a place to which the wireless power transmitter cannot transmit power, and

wherein the wireless power repeater operates alternately sequentially the first to third repeating coils at a predetermined time interval.

2. The wireless power transmission system of claim 1, wherein the charging container comprises a printed circuit board (PCB).

3. The wireless power transmission system of claim 1, wherein the first repeating coil transmits the power, which has been received therein from the wireless power transmitter, to the electronic device resonance-coupled with the first repeating coil.

4. The wireless power transmission system of claim 1, wherein the wireless power repeater alternately operates the first and second repeating coils at the predetermined time interval using a switch.

5. A wireless power repeater comprising:

a charging container having a hexahedral box shape, wherein the charging container is configured to receive an electronic device;

a first coil disposed at a first side of the charging container, comprising a first conduction line wound repeatedly, and coupled with a wireless power transmitter by resonance;

a second coil disposed at a second side of the charging container, comprising a second conduction line wound repeatedly, and coupled with the wireless power transmitter by resonance;

a third coil disposed at a third side of the charging container, comprising a third conduction line wound repeatedly, and coupled with the wireless power transmitter by resonance; and

a controller configured to enable current to flow through the first to third coils at a predetermined time interval,

wherein the three sides of the charging container are arranged at an angle of 90 degrees to each other,

wherein each coil has a spiral shape, and

wherein the controller generates a magnetic field by alternately sequentially applying current to the first, second, and third coils at a predetermined time interval.

6. The wireless power repeater of claim 5, wherein the charging container comprises a printed circuit board (PCB).

7. The wireless power repeater of claim 5, wherein each coil repeats the power between the wireless power transmitter and the electronic device by using resonance.

8. The wireless power repeater of claim 5, wherein the first coil is physically separated from the second coil, the second coil is physically separated from the third coil, and the first coil is physically separated from the third coil.