Wireless Power Receiver and Control Method Thereof

• US 20190074727A1
• Filed: 11/06/2018
• Published: 03/07/2019
• Est. Priority Date: 11/04/2011
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: LEE, Ki Min, LEE, Jung Oh
• Granted Patent: US 10,622,842 B2
• Time in Patent Office: Days
• CPC Class Codes: G06K 19/0708 the source being electromagnetic or magnetic
• CPC Class Codes: G06K 19/0715 the arrangement including means to regulate power transfer to the integrated circuit
• CPC Class Codes: G06K 19/07783 the coil being planar
• CPC Class Codes: H01Q 1/2225 used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
• CPC Class Codes: H01Q 1/526 Electromagnetic shields
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power receiver according to an embodiment wirelessly receives power from a wireless power transmitter. The wireless power receiver includes a printed circuit board having a reception space in a predetermined area, a receiving coil disposed in the reception space of the printed circuit board for receiving power from the wireless power transmitter, and a short-range communication antenna disposed on the printed circuit board while surrounding the receiving coil.

Claims

1. A wireless power receiver, comprising:

a shielding unit;

a first layer on the shielding unit;

a wireless receiving coil on the first layer;

a second layer on the wireless receiving coil;

a first region disposed between the first layer and the second layer and vertically overlapping the wireless receiving coil; and

a second region disposed between the first layer and the second layer and not vertically overlapping the wireless receiving coil,

wherein a first distance between the first layer and the second layer in the first region is greater than a second distance between the first layer and the second layer in the second region.

2. The wireless power receiver of claim 1, wherein the second distance is smaller than a thickness of the wireless receiving coil.

3. The wireless power receiver of claim 1, further comprising:

a short-range communication antenna on the first layer.

4. The wireless power receiver of claim 3, further comprising:

a third region disposed between the first layer and the second layer and vertically overlapping the short-range communication antenna; and

a fourth region disposed between the first layer and the second layer and not vertically overlapping the short-range communication antenna,

wherein a third distance between the first layer and the second layer in the third region is greater than a fourth distance between the first layer and the second layer in the fourth second region.

5. The wireless power receiver of claim 4, wherein the fourth distance is smaller than a thickness of the short-range communication antenna.

6. The wireless power receiver of claim 1, comprising:

a third layer under the shielding unit.

7. The wireless power receiver of claim 1, comprising:

an adhesive disposed between the shielding unit and the first layer.

8. The wireless power receiver of claim 1, wherein the shielding unit has a reception space in a predetermined area.

9. A wireless power receiver, comprising:

a shielding unit;

a first layer on the shielding unit;

a wireless receiving coil on the first layer;

a second layer on the wireless receiving coil;

a first region disposed between the first layer and in which the first layer and the second layer contact the wireless receiving coil; and

a second region disposed between the first layer and the second layer and having a first separated space in which the first layer and the second layer do not contact the wireless receiving coil.

10. The wireless power receiver of claim 9, wherein the first separated space is disposed on a side surface of the wireless receiving coil.

11. The wireless power receiver of claim 9, wherein a first distance between the first layer and the second layer in the first region is greater than a second distance between the first layer and the second layer in the second region.

12. The wireless power receiver of claim 11, wherein the second distance is smaller than a thickness of the wireless receiving coil.

13. The wireless power receiver of claim 9, further comprising:

a short-range communication antenna on the first layer.

14. The wireless power receiver of claim 13, further comprising:

a third region disposed between the first layer and the second layer and in which the first layer and the second layer contact the short-range communication antenna; and

a fourth region disposed between the first layer and the second layer and having a second separated space in which the first layer and the second layer do not contact the short-range communication antenna.

15. The wireless power receiver of claim 14, wherein the second separated space is disposed on a side surface of the wireless receiving coil.

16. The wireless power receiver of claim 14, wherein a third distance between the first layer and the second layer in the third region is greater than a fourth distance between the first layer and the second layer in the fourth second region.

17. The wireless power receiver of claim 16, wherein the fourth distance is smaller than a thickness of the wireless receiving coil.

18. The wireless power receiver of claim 9, comprising:

a third layer under the shielding unit.

19. The wireless power receiver of claim 9, comprising:

an adhesive disposed between the shielding unit and the first layer.

20. The wireless power receiver of claim 9, wherein the shielding unit has a reception space in a predetermined area.