APPARATUS AND METHOD FOR TRANSCEIVING WIRELESS POWER

• US 20140152116A1
• Filed: 12/02/2013
• Published: 06/05/2014
• Est. Priority Date: 12/05/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Ki Young, CHERNOKALOV, Alexander G., SONG, Keum Su, OLYUNIN, Nikolay, MAKURIN, Mikhail, ARKHIPENKOV, Vladimir Y.
• Granted Patent: US 9,934,902 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• 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 50/12 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 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

An apparatus configured to transceive wireless power, includes a magnetostrictive resonator configured to be excited by a magnetic field, and a soft magnetic material disposed in a vicinity of the magnetostrictive resonator. The apparatus further includes a transducing coil disposed in a vicinity of the magnetostrictive resonator or the soft magnetic material, and configured to convert mechanical energy generated by the excitation of the magnetostrictive resonator to electric energy.

Claims

1. An apparatus configured to transceive wireless power, the apparatus comprising:

a magnetostrictive resonator configured to be excited by a magnetic field;

a soft magnetic material disposed in a vicinity of the magnetostrictive resonator; and

a transducing coil disposed in a vicinity of the magnetostrictive resonator or the soft magnetic material, and configured to convert mechanical energy generated by the excitation of the magnetostrictive resonator to electric energy.

2. The apparatus of claim 1, wherein the magnetostrictive resonator and the soft magnetic material are in a form of a rod.

3. The apparatus of claim 1, wherein the magnetostrictive resonator and the soft magnetic material are disposed with a distance less than a length of the magnetostrictive resonator therebetween.

4. The apparatus of claim 1, wherein:

the transducing coil and the magnetostrictive resonator are disposed with a distance less than a length of the magnetostrictive resonator therebetween; and

the transducing coil and the soft magnetic material are disposed with a distance less than a length of the soft magnetic material therebetween.

5. The apparatus of claim 1, wherein the soft magnetic material is a high-permeability ferrite rod.

6. The apparatus of claim 1, wherein the magnetostrictive resonator and the soft magnetic material are aligned.

7. The apparatus of claim 1, wherein the magnetostrictive resonator is in a form of a tubular rod, and comprises a magnetostrictive ferrite material.

8. The apparatus of claim 1, wherein the magnetostrictive resonator is configured to have circular remanent magnetization, and vibrate in a torsional vibration mode in response to the magnetostrictive resonator being excited by the magnetic field.

9. The apparatus of claim 1, wherein the magnetostrictive resonator and the soft magnetic material are configured to have cylindrical dimensions.

10. The apparatus of claim 1, wherein the magnetostrictive resonator and the soft magnetic material are disposed to be parallel to each other in a two-dimensional or three-dimensional array.

11. The apparatus of claim 1, wherein the magnetostrictive resonator comprises magnetostrictive resonators configured to have equal resonant frequencies.

12. An apparatus configured to transceive wireless power, the apparatus comprising:

magnetostrictive resonators configured to be excited by a magnetic field; and

a transducing coil disposed in a vicinity of the magnetostrictive resonators, and configured to convert mechanical energy generated by the excitation of the magnetostrictive resonators to electric energy.

13. The apparatus of claim 12, wherein the magnetostrictive resonators are in a form of a rod.

14. The apparatus of claim 12, wherein the transducing coil and the magnetostrictive resonators are disposed with a distance less than a length of the magnetostrictive resonators therebetween.

15. The apparatus of claim 12, wherein the magnetostrictive resonators are configured to have circular remanent magnetization, and vibrate in a torsional vibration mode in response to the magnetostrictive resonators being excited by the magnetic field.

16. The apparatus of claim 12, wherein the magnetostrictive resonators are aligned with a distance less than a length of the magnetostrictive resonators therebetween.

17. The apparatus of claim 12, wherein the magnetostrictive resonators are disposed to be parallel to each other with a distance less than a length of the magnetostrictive resonators therebetween.

18. The apparatus of claim 12, wherein the magnetostrictive resonators are disposed to be parallel to each other in a two-dimensional or three-dimensional array.

19. The apparatus of claim 12, wherein the magnetostrictive resonators are configured to have equal resonant frequencies.

20. A matching method of a wireless power transmitting apparatus comprising a magnetostrictive resonator and a transducing coil, the method comprising:

measuring an amount of power transmitted by the wireless power transmitting apparatus to a wireless power receiving apparatus; and

adjusting a number of turns of the transducing coil, and/or positions of the transducing coil and the magnetostrictive resonator, until the measured amount of power is maximized.

21. A matching method of a wireless power receiving apparatus comprising a magnetostrictive resonator and a transducing coil, the method comprising:

measuring an amount of power received by the wireless power receiving apparatus from a wireless power transmitting apparatus; and

adjusting a number of turns of the transducing coil, and/or positions of the transducing coil and the magnetostrictive resonator, until the measured amount of power is maximized.

22. An apparatus comprising:

a power transmitter comprising a magnetostrictive resonator and a transducing coil, and configured to wirelessly transmit power to another apparatus; and

a matching unit configured to

measure an amount of the transmitted power, and

adjust a number of turns of the transducing coil, and/or positions of the transducing coil and the magnetostrictive resonator, until the measured amount of the transmitted power is a predetermined maximum value.

23. The apparatus of claim 22, further comprising:

a power receiver comprising the magnetostrictive resonator and the transducing coil, and configured to wirelessly receive power from another apparatus; and

a matching unit configured to

measure an amount of the received power, and

adjust the number of turns of the transducing coil, and/or the positions of the transducing coil and the magnetostrictive resonator, until the measured amount of the received power is a predetermined maximum value.