Wireless power transceiver and display apparatus with the same

• US 10,581,278 B2
• Filed: 03/30/2018
• Issued: 03/03/2020
• Est. Priority Date: 08/22/2017
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Young-ho, Kim, Young-joon, Jegadeesan, Rangarajan, Lim, Sang-min, Kim, Moon-young, Park, Yun-kwon
• Primary Examiner(s): Deberadinis, Robert L
• Application Number:
  US15/942,055
• Publication Number:
  US 20190067996A1
• Time in Patent Office: 704 Days
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/28 Coils; Windings; Conductive connections
• CPC Class Codes: H01F 27/306 Fastening or mounting coils or windings on core, casing or other support
• CPC Class Codes: H01F 27/38 Auxiliary core members; Auxiliary coils or windings
• CPC Class Codes: H01F 3/10 Composite arrangements of magnetic circuits
• 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 50/005 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 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/502 the energy repeater being integrated together with the emitter or the receiver
• CPC Class Codes: H04R 1/025 Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones

Abstract

Provided is a wireless power transceiver including a magnetic body formed in a rod shape with a groove in a middle portion thereof, a solenoid coil wound around the middle portion of the magnetic body in which the groove is formed, and a dual coil disposed substantially perpendicular to the solenoid coil and wound around portions of both sides of the groove of the magnetic body, the dual coil being wound in directions opposite to each other.

Claims

1. A wireless power transceiver comprising:

a magnetic body formed in a rod shape and comprising a groove in a middle portion of the magnetic body and two portions on opposite sides of the groove;

a solenoid coil wound around the middle portion of the magnetic body in which the groove is provided; and

a dual coil disposed substantially perpendicular to the solenoid coil and wound with respect to each of the two portions of the magnetic body, the dual coil being wound in directions opposite to each other.

2. The wireless power transceiver of claim 1, wherein the solenoid coil and the dual coil are physically connected in series.

3. The wireless power transceiver of claim 1, wherein the solenoid coil and the dual coil are physically separated, and coupled to each other by a magnetic field.

4. The wireless power transceiver of claim 3, further comprising a power source connected to both ends of the solenoid coil,

wherein the dual coil is configured to operate as a repeater.

5. The wireless power transceiver of claim 3, further comprising a power source connected to both ends of the dual coil,

wherein the solenoid coil is configured to operate as a repeater.

6. The wireless power transceiver of claim 1, wherein the magnetic body comprises two legs on opposite sides of the groove, and the dual coil is wound around the two legs of the magnetic body, respectively, in a helical shape.

7. The wireless power transceiver of claim 1, wherein the magnetic body comprises two legs on opposite sides of the groove, and the dual coil is wound around the two legs of the magnetic body, respectively, in a spiral shape.

8. The wireless power transceiver of claim 7, wherein the dual coil comprises:

a plurality of spiral coil layers;

a plurality of insulators interposed between the plurality of spiral coil layers; and

a plurality of capacitors connected in series to the plurality of spiral coil layers.

9. The wireless power transceiver of claim 1, wherein the magnetic body comprises:

a first magnetic body in which the solenoid coil is wound around a middle portion of the first magnetic body;

a second magnetic body disposed on the first magnetic body at one side of the solenoid coil, wherein one portion of the dual coil is wound around the second magnetic body; and

a third magnetic body disposed on the first magnetic body at another side of the solenoid coil and spaced apart from the second magnetic body, wherein another portion of the dual coil is wound around the third magnetic body.

10. The wireless power transceiver of claim 1, wherein

a length of the magnetic body is at least five times greater than a width or a thickness of the magnetic body.

11. A wireless power transceiver comprising:

a magnetic body;

a main coil disposed on a upper side of the magnetic body, the main coil comprising a first main coil portion which is disposed at one side with respect to a middle portion of the magnetic body and wound in one direction, and a second main coil portion which is disposed at another side, adjacent to the one side, with respect to the magnetic body and wound in a direction opposite to the first main coil portion; and

an auxiliary coil disposed between the magnetic body and the main coil, the auxiliary coil comprising a first auxiliary coil part disposed below the first main coil portion and a second auxiliary coil part disposed below the second main coil portion.

12. The wireless power transceiver of claim 11, wherein

each of the first auxiliary coil part and the second auxiliary coil part comprises at least two sub auxiliary coil parts.

13. The wireless power transceiver of claim 11, wherein

the main coil and the auxiliary coil are physically connected in series, and

wherein a capacitor is physically connected in series with each of the main coil and the auxiliary coil.

14. The wireless power transceiver of claim 11, wherein

the main coil and the auxiliary coil are physically separated, and coupled to each other by a magnetic field.

15. The wireless power transceiver of claim 11, wherein coil receiving grooves configured to receive the main coil and the auxiliary coil are formed on an upper surface of the magnetic body in contact with the main coil and the auxiliary coil.

16. A display system comprising:

a display apparatus;

a wireless power receiver configured to supply power to the display apparatus; and

a wireless power transmitter configured to generate a magnetic field to pass through the wireless power receiver,

wherein the wireless power receiver comprises

a solenoid coil in which a current is induced by a magnetic field component of the magnetic field passing through the wireless power receiver in a horizontal direction, and

a dual coil disposed substantially perpendicular to the solenoid coil and wound on both sides of the solenoid coil below the solenoid coil in directions opposite to each other, the dual coil in which a current is induced by a magnetic field component of the magnetic field passing through the wireless power receiver in a vertical direction.

17. The display system of claim 16, wherein

the display apparatus comprises a display panel,

wherein the dual coil of the wireless power receiver is wound in a spiral shape, and

wherein the wireless power receiver is disposed on a rear surface of the display panel, and a side surface of the dual coil is exposed to a front side of the display apparatus below a lower end of the display apparatus.

18. The display system of claim 16, wherein

the display apparatus comprises a display panel and a metal plate provided on a rear surface of the display panel,

wherein the dual coil of the wireless power receiver is wound in a helical shape, and

wherein the metal plate of the display apparatus comprises an opening corresponding to the wireless power receiver, and the wireless power receiver is disposed in the opening of the metal plate.

19. The display system of claim 16, further comprising:

speakers disposed at both ends of the wireless power receiver, and

wherein sound passage holes configured to emit sound from the speakers are disposed at both ends of a magnetic body of the wireless power receiver.

20. The display system of claim 16 further comprising:

a sound bar disposed below the display apparatus,

wherein the solenoid coil and the dual coil are physically separated, and

wherein the solenoid coil is disposed at a lower end of a rear surface of the display apparatus, and the dual coil is disposed in the sound bar.