ELECTRONIC DEVICE AND METHOD FOR TRANSMITTING AND RECEIVING WIRELESS POWER

• US 20120299390A1
• Filed: 05/11/2012
• Published: 11/29/2012
• Est. Priority Date: 05/27/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Nam Yun, HONG, Young Tack, KWON, Sang Wook, PARK, Yun Kwon, KIM, Ki Young, RYU, Young Ho, KIM, Dong Zo, YOON, Chang Wook, CHOL, Jin Sung
• Granted Patent: US 9,272,630 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• 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 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• 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 50/502 the energy repeater being integrated together with the emitter or the receiver
• 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 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An electronic device and method for transmitting and receiving a wireless power are provided. An electronic device for transmitting and receiving wireless power may include a resonator configured to operate, based on a plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode, wherein: (i) in the power reception mode, the resonator is configured to receive power from a wireless power transmitter, (ii) in the relay mode, the resonator is configured to relay power received from the wireless power transmitter to a wireless power receiver, and (iii) in the power transmission mode, the resonator is configured to transmit power to the wireless power receiver; and a path controller configured to control at least one electrical pathway of electronic device based on the operating mode.

Claims

1. An electronic device for transmitting and receiving wireless power, the electronic device comprising:

a resonator configured to operate, based on a plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode, wherein;

(i) in the power reception mode, the resonator is configured to receive power from a wireless power transmitter,

(ii) in the relay mode, the resonator is configured to relay power received from the wireless power transmitter to a wireless power receiver, and

(iii) in the power transmission mode, the resonator is configured to transmit power to the wireless power receiver; and

a path controller configured to control at least one electrical pathway of electronic device based on the operating mode.

2. The electronic device of claim 1, further comprising:

a power converter configured to convert direct current (DC) voltage to alternating current (AC) voltage using a resonance frequency, and to transfer the AC current to the resonator, when the electronic device is operated in the power transmission mode.

3. The electronic device of claim 2, further comprising a power amplifier configured to amplify the DC voltage.

4. The electronic device of claim 1, further comprising:

a rectification unit configured to generate a DC signal by rectifying an AC signal of a power received via the resonator, when the electronic device is operated in the power reception mode.

5. The electronic device of claim 1, further comprising:

a DC-to-DC (DC/DC) converter configured to supply voltage of a predetermined level to a load by adjusting a level of the DC signal.

6. The electronic device of claim 1, further comprising:

a control/communication unit configured to perform a communication with the wireless power transmitter or the wireless power receiver, to determine the operating mode by the communication, to control the path controller based on the determined operating mode, or any combination thereof.

7. The electronic device of claim 1, wherein the resonator is configured to receive the power from the wireless power transmitter by passing through one or more electronic devices.

8. The electronic device of claim 1, wherein the resonator is configured to transmit the power to the wireless power receiver by passing through one or more electronic devices.

9. The electronic device of claim 1, wherein the resonator is configured to simultaneously transmit the power to a plurality of electronic devices.

10. The electronic device of claim 1 further comprising:

a control/communication unit configured to control a magnetic field to be uniformly distributed, based on a direction of an induced current flowing in the resonator, and on a direction of an input current flowing in a feeding unit,

wherein the magnetic field is formed in the resonator.

11. A method for transmitting and receiving wireless power in an electronic device, the method comprising:

determining one of a plurality of operating modes of the electronic device, the plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode; and

(i) in the power reception mode, receiving power from a wireless power transmitter,

(ii) in the relay mode, relaying power received from the wireless power transmitter to a wireless power receiver, and

(iii) in the power transmission mode, transmitting power to the wireless power receiver.

12. The method of claim 11, further comprising:

performing a communication with another electronic device to determine the operating mode of the electronic device.

13. The method of claim 11, further comprising:

supplying voltage of a predetermined level to a load by adjusting a level of a DC signal.

14. The method of claim 11, further comprising:

generating power using a resonance frequency; and

transferring the generated power to a resonator.

15. The method of claim 11, further comprising generating a DC signal by rectifying an AC signal of power received via a resonator.

16. The method of claim 11, further comprising:

receiving the power from the wireless power transmitter by passing through one or more electronic devices.

17. The method of claim 11, further comprising:

transmitting the power to the wireless power receiver by passing through one or more electronic devices.

18. The method of claim 11, further comprising:

simultaneously transmitting the power to a plurality of electronic devices.

19. A resonator device comprising:

a feeder configured to receive an input current and to form a magnetic field; and

a resonator configured to form another magnetic field based on an induced current generated by the magnetic field of the feeder,

wherein, when the magnetic field formed by the feeder and the another magnetic field formed by the source resonator are combined, the strength of the combined magnetic field changes within the feeder and outside the feeder.

20. The resonator device of claim 19, wherein:

(i) the strength of the combined magnetic field decreases within the feeder and increases outside the feeder;

or

(ii) the strength of the combined magnetic field increases within the feeder and decreases outside the feeder.

21. The resonator device of claim 19, wherein the resonator and the feeder have a common ground.

22. The resonator device of claim 19, wherein the resonator comprises a capacitor.

23. The resonator of claim 22, wherein the feeder is electrically connected to the capacitor.

24. The resonator of claim 19, wherein the feeder is positioned at least partially within the resonator.

25. The resonator of claim 19, wherein the resonator has a closed loop structure.

26. The resonator of claim 19, wherein the resonator comprises:

a first transmission line comprising a first signal conducting portion, a second signal conducting portion, and a first ground conducting portion, the first ground conducting portion corresponding to the first signal conducting portion and the second signal conducting portion;

a first conductor electrically connecting the first signal conducting portion to the first ground conducting portion;

a second conductor electrically connecting the second signal conducting portion to the first ground conducting portion; and

at least one first capacitor inserted between the first signal conducting portion and the second signal conducting portion, in series with respect to a current flowing through the first signal conducting portion and the second signal conducting portion.

27. The resonator of claim 19, wherein the feeder comprises:

a second transmission line comprising a third signal conducting portion, a fourth signal conducting portion, and a second ground conducting portion, the second ground conducting portion corresponding to the third signal conducting portion and the fourth signal conducting portion;

a third conductor electrically connecting the third signal conducting portion to the second ground conducting portion;

a fourth conductor electrically connecting the fourth signal conducting portion to the second ground conducting portion;

a fifth conductor electrically connecting the first signal conducting portion to the third signal conducting portion; and

a sixth conductor electrically connecting the second signal conducting portion to the fourth signal conducting portion.

28. The resonator of claim 19, further comprising:

a control/communication unit configured to control the magnetic field to be uniformly distributed, based on a direction of an induced current flowing in the resonator, and on a direction of an input current flowing in the feeder.

29. The resonator of claim 28, wherein the controller is configured to adjust the size of the feeder.

30. The resonator of claim 19, further comprising:

a matching device configured to match the input impedance to an output impedance.