APPARATUS AND METHOD OF RECEIVING POWER WIRELESSLY, AND SYSTEM FOR SUPPLYING POWER WIRELESSLY USING THE SAME

• US 20160118807A1
• Filed: 03/12/2015
• Published: 04/28/2016
• Est. Priority Date: 10/27/2014
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: CHO, Sang Ho, CHO, Hyung Wook, PARK, Sung Heum, HAN, Chang Mok, SUNG, Jae Suk, HAN, Jeong Man, CHANG, Ki Won
• Application Number:
  US14/656,077
• Publication Number:
  US 20160118807A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

There are provided an apparatus and a method of receiving power wirelessly, and a system for supplying power wirelessly using the same. The apparatus for receiving power wirelessly may include a power receiving unit receiving power wirelessly in a non-contact manner, a switching unit operating the power receiving unit, and a controlling unit controlling an output voltage by adjusting an OFF switching operation of the switching unit.

Claims

1. An apparatus for receiving power wirelessly, the apparatus comprising:

a power receiving unit receiving power wirelessly in a non-contact manner;

a switching unit operating the power receiving unit; and

a controlling unit controlling an output voltage by adjusting an OFF switching operation of the switching unit.

2. The apparatus of claim 1, wherein the controlling unit controls an ON switching operation of the switching unit to be synchronized with an ON switching operation of an apparatus for transmitting power wirelessly.

3. The apparatus of claim 1, wherein the controlling unit controls a timing of the OFF switching operation to be retarded as the output voltage is increased.

4. The apparatus of claim 1, wherein the controlling unit includes:

a reservoir maintaining synchronization information with an apparatus for transmitting power wirelessly; and

a controller adjusting a switching timing using the synchronization information.

5. The apparatus of claim 1, wherein the power receiving unit includes:

a receiving coil receiving power wirelessly in the non-contact manner; and

a capacitor blocking a direct current component of the power wirelessly received by the receiving coil.

6. The apparatus of claim 1, further comprising a rectifying unit rectifying the power wirelessly received by the power receiving unit.

7. The apparatus of claim 6, wherein the switching unit is configured of a single switch connected to the rectifying unit in series.

8. A system for supplying power wirelessly, comprising:

an apparatus for transmitting power wirelessly, transmitting power wirelessly in a non-contact manner; and

an apparatus for receiving power wirelessly, receiving power wirelessly in the non-contact manner, and adjusting an output voltage by adjusting a resonance end timing using the apparatus for transmitting power wirelessly.

9. The system for supplying power wirelessly of claim 8, wherein the apparatus for transmitting power wirelessly is operated at a fixed frequency regardless of the output voltage of the apparatus for transmitting power wirelessly.

10. The system for supplying power wirelessly of claim 9, wherein the apparatus for receiving power wirelessly adjusts a level of the output voltage by adjusting a resonance end timing of a resonance circuit.

11. The system for supplying power wirelessly of claim 9, wherein the apparatus for receiving power wirelessly includes:

a power receiving unit receiving power wirelessly in the non-contact manner;

a switching unit operating the power receiving unit; and

a controlling unit controlling the output voltage by adjusting an OFF switching operation of the switching unit.

12. The system for supplying power wirelessly of claim 11, wherein the controlling unit controls an ON switching operation of the switching unit to be synchronized with an ON switching operation of an apparatus for transmitting power wirelessly.

13. The system for supplying power wirelessly of claim 11, wherein the controlling unit controls a timing of the OFF switching operation to be retarded as the output voltage is increased.

14. The system for supplying power wirelessly of claim 11, wherein the controlling unit includes:

a reservoir maintaining synchronization information with an apparatus for transmitting power wirelessly; and

a controller adjusting a switching timing using the synchronization information.

15. A method of receiving power wirelessly in an apparatus for receiving power wirelessly, the method comprising:

performing an ON switching operation to be synchronized with an apparatus for transmitting power wirelessly;

determining an operation end timing of a resonance circuit included in the apparatus for receiving power wirelessly, depending on a level of an output voltage; and

controlling the resonance circuit to be switched to an OFF state at the operation end timing of the resonance circuit.

16. The method of claim 15, wherein the determining of the operation end timing of the resonance circuit includes:

checking the level of the output voltage;

determining a resonance time with the apparatus for transmitting power wirelessly, depending on the level of the output voltage; and

determining the operation end timing by applying the resonance time.