Wireless power transmission apparatus and system for wireless power transmission thereof

• US 9,306,633 B2
• Filed: 01/03/2012
• Issued: 04/05/2016
• Est. Priority Date: 01/03/2011
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Sung-jin, Cho, Eun-il, Yi, Kang-hyun
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Zhou, Zixuan
• Application Number:
  US13/342,362
• Publication Number:
  US 20120169278A1
• Time in Patent Office: 1,554 Days
• Field of Search: 320107-108, 320/137
• US Class Current: 1/1
• 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 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power transmission apparatus and a wireless power transmission system are provided. The wireless power transmission apparatus includes a main body; and a support which is disposed on a side surface of the main body, wherein the main body includes a transmission resonator unit which generates a first magnetic field of a horizontal direction with respect a ground surface and a second magnetic field of a vertical direction with respect to the ground surface.

Claims

1. A wireless power transmission apparatus comprising:

a main body which has a cylindrical shape of a predetermined height; and

a support which is disposed on a side surface of the main body,

wherein the main body comprises a transmission resonator unit which generates a horizontal magnetic field with respect a ground surface and a vertical magnetic field with respect to the ground surface using a transmission conductive wire loop which has a cylindrical shape,

wherein the support is configured to support a first power reception apparatus so that the first power reception apparatus is charged by the horizontal magnetic field when the first power reception apparatus is placed on the support and the main body has a top surface configured to support a second power reception apparatus so the second power reception apparatus is provided with the vertical magnetic field when the second power reception apparatus is placed on the top surface,

wherein the first power reception apparatus is charged by placing a loop surface of a reception conductive wire loop of the first power reception apparatus perpendicular to the horizontal magnetic field, and the second power reception apparatus is charged by placing a loop surface of a reception conductive wire loop of the second power reception apparatus perpendicular to the vertical magnetic field,

wherein the reception conductive wire loop is formed on an edge of the first power reception apparatus, and

wherein the transmission conductive wire loop is formed in the cylindrical shape by being bent circularly.

2. The wireless power transmission apparatus as claimed in claim 1, wherein the main body has a cylindrical shape.

3. The wireless power transmission apparatus as claimed in claim 1, wherein the support has a disk shape.

4. The wireless power transmission apparatus as claimed in claim 1, wherein the transmission resonator unit further comprises a resonance capacitor and a feeder conductive wire loop which induces electric current to the transmission conductive wire loop.

5. The wireless power transmission apparatus as claimed in claim 1, wherein the wireless power transmission apparatus has a transmission efficiency which is proportional to Root(Qs*Qd), where Qs is a Q value of the power transmission apparatus and Qd is a Q value of a power reception apparatus.

6. The wireless power transmission apparatus as claimed in claim 1, wherein the transmission resonator unit has a resonant frequency ranging from 1 MHz to 30 MHz.

7. The wireless power transmission apparatus as claimed in claim 1, wherein the transmission resonator unit has a variable resonant frequency.

8. The wireless power transmission apparatus as claimed in claim 1, wherein the transmission conductive wire loop is in contact with an inner edge of the main body.

9. The wireless power transmission apparatus as claimed in claim 1, wherein the transmission conductive wire loop generates the horizontal and vertical magnetic fields simultaneously.

10. The wireless power transmission apparatus as claimed in claim 1, further comprising a radio frequency (RF) amplifier unit which generates an alternating current (AC) waveform,

wherein the transmission resonator unit receives the AC waveform generated by the RF amplifier unit and generates the horizontal and vertical magnetic field in response to the AC waveform.

11. The wireless power transmission apparatus as claimed in claim 10, wherein the RF amplifier unit has a variable operating frequency.

12. The wireless power transmission apparatus as claimed in claim 10, further comprising a shielding member interposed between the RF amplifier unit and the transmission resonator unit.

13. The wireless power transmission apparatus as claimed in claim 12, wherein the shielding member is a ferrite sheet.

14. The wireless power transmission apparatus as claimed in claim 10, further comprising a shield case which encloses the RF amplifier unit.

15. The wireless power transmission apparatus as claimed in claim 14, wherein the shield case is formed by tinning.

16. The wireless power transmission apparatus as claimed in claim 10, wherein the RF amplifier unit and the transmission resonator unit are separated by a predetermined gap.

17. A wireless power transmission system comprising:

a power transmission apparatus which generates a vertical magnetic field and a horizontal magnetic field with respect to a ground surface;

a first power reception apparatus which comprises a first reception conductive wire loop that is activated by the horizontal magnetic field to charge the first power reception apparatus; and

a second power reception apparatus which comprises a second reception conductive wire loop that is activated by the vertical magnetic field to charge the second power reception apparatus,

wherein the power transmission apparatus comprises a cylindrical transmission conductive wire loop which generates the vertical magnetic field and the horizontal magnetic field,

wherein the first reception conductive wire loop of the first power reception apparatus is activated by the horizontal magnetic field to charge the first power reception apparatus when the first power reception apparatus is placed on the power transmission apparatus so that a loop surface of the first power reception conductive wire loop is perpendicular to the horizontal magnetic field, and the second reception conductive wire loop of the second power reception apparatus is activated by the vertical magnetic field to charge the second power reception apparatus when second power reception apparatus is placed on the power transmission apparatus so that a loop surface of the second power reception conductive wire loop is perpendicular to the vertical magnetic field, and

wherein the first reception conductive wire loop is formed on an edge of the first power reception apparatus, and

wherein the power transmission apparatus comprises the transmission conductive wire loop which is formed in a cylindrical shape by being bent circularly.

18. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus comprises:

a main body which comprises a transmission resonator which generates the vertical magnetic field and the horizontal magnetic field; and

a support which is disposed on a side surface of the main body, and is configured to support the first power reception apparatus so that first power reception apparatus is provided with the horizontal magnetic field when the first power reception apparatus is placed on the support.

19. The wireless power transmission system as claimed in claim 18, wherein the main body has a top surface configured to support the second power reception apparatus so the second power reception apparatus is provided with the vertical magnetic field of the vertical direction when the second power reception apparatus is placed on the top surface.

20. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus further comprises a resonance capacitor and a feeder conductive wire loop which induces electric current to the transmission conductive wire loop.

21. The wireless power transmission system as claimed in claim 17, wherein the wireless power transmission apparatus has a transmission efficiency which is proportional to Root (Qs*Qd), where Qs is a Q value of the power transmission apparatus and Qd is a Q value of the first or second power reception apparatus.

22. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus has a resonant frequency ranging from 1 MHz to 30 MHz.

23. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus has a variable resonant frequency.

24. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus comprises a radio frequency (RF) amplifier unit having a variable operating frequency.

25. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus comprises:

a radio frequency (RF) amplifier unit which generates an alternating current (AC) waveform;

a transmission resonator unit comprising a transmission conductive wire loop which receives the AC waveform generated by the RF amplifier unit and generates the horizontal and vertical magnetic fields; and

a shielding member which is disposed between the RF amplifier unit and the transmission conductive wire loop.

26. The wireless power transmission system as claimed in claim 25, wherein the shielding member is a ferrite sheet.

27. The wireless power transmission system as claimed in claim 25, wherein the RF amplifier unit is enclosed by a shield case.

28. The wireless power transmission system as claimed in claim 27, wherein the shield case is formed by tinning.

29. The wireless power transmission system as claimed in claim 25, wherein the RF amplifier unit and the transmission resonator unit are separated by a predetermined gap.

30. The wireless power transmission system as claimed in claim 17, wherein the first power reception apparatus is one of three-dimensional (3D) glasses, a mobile phone, and a remote controller.

31. The wireless power transmission system as claimed in claim 17, wherein the second power reception apparatus is one of three-dimensional (3D) glasses, a mobile phone, and a remote controller.

32. The wireless power transmission system as claimed in claim 17, wherein the support has a disk shape.

33. The wireless power transmission system as claimed in claim 17, wherein the power transmission apparatus generates the horizontal and vertical magnetic fields simultaneously.

34. A wireless power transmission system comprising:

a power transmission apparatus which generates a first magnetic field parallel to a ground surface and a second magnetic field perpendicular to the ground surface;

a first power reception apparatus which is charged by the first magnetic field when placed at a first position on the power transmission apparatus; and

a second power reception apparatus which is charged by the second magnetic field when placed at a second position on the power transmission apparatus,

wherein the power transmission apparatus comprises a cylindrical transmission conductive wire loop which generates the first magnetic field and the second magnetic field,

wherein the first power reception apparatus comprises a first reception conductive wire loop that is activated by the first magnetic field to charge the first power reception apparatus when the first power reception apparatus is placed on the power transmission apparatus so that a loop surface of the first power reception conductive wire loop is perpendicular to the first magnetic field, and the second power reception apparatus comprises a second reception conductive wire loop that is activated by the second magnetic field to charge the second power reception apparatus when the second power reception apparatus is placed on the power transmission apparatus so that a loop surface of the second power reception conductive wire loop is perpendicular to the second magnetic field,

wherein the first reception conductive wire loop is formed on an edge of the first power reception apparatus, and

wherein the power transmission apparatus comprises the transmission conductive wire loop which is formed in a cylindrical shape by being bent circularly.

35. The wireless power transmission system as claimed in claim 34, wherein the power transmission apparatus comprises:

a main body; and

a support which is disposed on a side surface of the main body,

wherein the main body comprises a transmission resonator unit which generates the first magnetic field and the second magnetic field.

36. The wireless power transmission system as claimed in claim 34, wherein the support is configured to support the first power reception apparatus so that first power reception apparatus is provided with the first magnetic field when the first power reception apparatus is placed on the support, and

the main body has a top surface configured to support the second power reception apparatus so the second power reception apparatus is provided with the second magnetic field when the second power reception apparatus is placed on the top surface.

37. The wireless power transmission system as claimed in claim 34, wherein the loop surface of the first power reception conductive wire loop is a single closed loop.