Apparatus and method for transmitting/receiving wireless energy in energy transmission system

• US 9,543,789 B2
• Filed: 11/20/2012
• Issued: 01/10/2017
• Est. Priority Date: 06/01/2012
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Kim, Seong-Min, Cho, In-Kui, Moon, Jung-Ick, Yun, Je-Hoon, Cheon, Sang-Hoon, Kim, Yong-Hae, Lee, Myung-Lae, Kang, Seung-Youl, Byun, Woo-Jin
• Primary Examiner(s): Kitov, Zeev V
• Application Number:
  US13/681,636
• Publication Number:
  US 20130320760A1
• Time in Patent Office: 1,512 Days
• 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 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

Disclosed are an apparatus and a method for transmitting/receiving wireless energy in an energy transmission system. The apparatus includes: a transmitting controller configured to generate a wireless energy signal; a transmitting resonance body port configured to transmit the wireless energy signal; and a transmitting resonance body configured to transmit the wireless energy signal transmitted through the transmitting resonance body port to receiving apparatuses, wherein the transmitting controller transmits impedance control signals for controlling impedance of each of the receiving resonance body ports of the plurality of receiving apparatuses.

Claims

1. An apparatus for transmitting wireless energy in an energy transmission system, comprising:

a transmitting controller configured to generate a wireless energy signal;

a transmitting resonance body port configured to transmit the wireless energy signal;

and a transmitting resonance body configured to simultaneously transmit the wireless energy signal transmitted through the transmitting resonance body port to a plurality of receiving apparatuses, wherein the transmitting controller transmits impedance control signals for controlling impedance of each of the receiving resonance body ports of the plurality of receiving apparatuses based on a required energy amount, a received energy amount, and impedance information from each of the plurality of receiving apparatuses.

2. The apparatus of claim 1, wherein the transmitting controller includes:

a signal processing unit configured to confirm transmission characteristic based on the reception of the received energy amount and the required energy amount from each of the plurality of receiving apparatuses; and

an energy signal generation unit configured to control an energy amount of the generated wireless energy signal according to a control of the signal processing unit.

3. The apparatus of claim 2, wherein the signal processing unit receives the impedance information of the receiving resonance body port from each of the plurality of receiving apparatuses and generates the impedance control signals according to the impedance information of the received receiving resonance body port.

4. The apparatus of claim 3, wherein the signal processing unit transmits the impedance control signals performing a control to increase the impedance of the receiving resonance body port to the receiving apparatus requiring the reduction in energy amount for the wireless energy signal among the plurality of receiving apparatuses.

5. The apparatus of claim 3, wherein the signal processing unit transmits the impedance control signals performing a control to reduce the impedance of the receiving resonance body port to the receiving apparatus requiring the increase in energy amount for the wireless energy signal among the plurality of receiving apparatuses.

6. The apparatus of claim 2, wherein the transmitting controller further include a transmitted energy measuring unit measuring the energy amount of the wireless energy signal output through the energy signal generation unit.

7. The apparatus of claim 6, wherein the signal processing unit calculates the energy amount to be transmitted based on the transmission characteristic and the energy amount of the measured wireless energy signal and controls the energy amount of the wireless energy signal based on the calculated energy amount.

18. The apparatus of claim 1, wherein the impedance control signals for controlling the impedance of each of the plurality of receiving resonance body ports is controlled based on the transmission state information of each of the receivers.

19. The apparatus of claim 2, wherein the signal processing unit receives the transmission characteristic from each of the plurality of receiving apparatuses at a predetermined interval to generate the impedance control signals until a required energy amount of each of the plurality of receiving apparatuses is received.

8. An apparatus for receiving wireless energy in an energy transmission system among a plurality of apparatuses for receiving wireless energy in an energy transmission system, wherein the apparatus for receiving wireless energy comprises:

a receiving resonance body configured to receive a wireless energy signal;

a receiving resonance body port configured to receive the wireless energy signal from the receiving resonance body; and

a receiving controller configured to transmit the wireless energy signal to a load and control impedance of the receiving resonance body port according to impedance control signals generated in consideration of transmission characteristics of each of the plurality of apparatuses for receiving wireless energy,

wherein the transmission characteristics includes a required, energy amount, a received amount, and impedance information of each of the plurality of apparatuses for receiving wireless energy.

9. The apparatus of claim 8, wherein the receiving controller includes:

a receiving energy measuring unit configured to measure a received energy amount of the received wireless energy signal;

a signal processing unit configured to transmit the received energy amount and the required energy amount required according to energy consumption of the load to a transmitting apparatus; and

an impedance control unit configured to control the impedance of the receiving resonance body port according to the impedance control signals.

10. The apparatus of claim 9, wherein the signal processing unit transmits impedance information of the receiving resonance body port to the transmitting apparatus.

11. The apparatus of claim 9, wherein the signal processing unit performs a control to increase the impedance of the receiving resonance body port so as to reduce the energy amount of the wireless energy signal.

12. The apparatus of claim 9, wherein the signal processing unit receives impedance control signals performing a control to reduce the impedance of the receiving resonance body port so as to increase the energy amount of the wireless energy signal.

13. A method for transmitting/receiving wireless energy in an energy transmission system, comprising:

simultaneously transmitting, by each of the plurality of receivers, transmission state information for receiving wireless energy to a transmitter;

simultaneously controlling, by the transmitter, impedance of each of the plurality of receivers based on the transmission state information until the energy amount required in the plurality of receivers is transmitted, wherein the impedance of each of the plurality of receivers is controlled based on the transmission state information of each of the receivers;

and simultaneously setting impedance of the receiving resonance body port according to the impedance control and simultaneously receiving a wireless energy signal according to the set impedance, by each of the plurality of receivers, wherein the transmission state information includes a received energy amount a required energy amount and impedance information of each of the plurality of receivers.

14. The method of claim 13, further comprising:

controlling, by the transmitter, a transmitted energy amount of the wireless energy signal based on the transmitted transmission state information.

15. The method of claim 14, wherein in the transmitting of the impedance control signals, the impedance control signals performing a control to increase the impedance of the receiving resonance body port to the receiver requiring the reduction in energy amount for the wireless energy signal among the plurality of receiving apparatuses are transmitted.

16. The method of claim 14, wherein in the transmitting of the impedance control signals, the impedance control signals performing a control to reduce the impedance of the receiving resonance body port to the receiver requiring the increase in energy amount for the wireless energy signal among the plurality of receiving apparatuses are transmitted.

17. The method of claim 13, wherein the transmission state information includes at least one of identifier information of each of the plurality of receivers and the impedance information of the receiving resonance body port.

20. The method of claim 13, wherein the transmission state information is received from each of the plurality of receivers at a predetermined interval to generate impedance control signals until a required energy amount of each of the plurality of receivers is received.