Energy charging apparatus and method

• US 10,122,202 B2
• Filed: 08/03/2015
• Issued: 11/06/2018
• Est. Priority Date: 08/26/2014
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Cho, In Kui, Kim, Seong Min, Moon, Jung Ick, Yun, Je Hoon, Byun, Woo Jin, Choi, Hyung Do
• Primary Examiner(s): Tran, Thienvu
• Assistant Examiner(s): Sun, Pinping
• Application Number:
  US14/816,898
• Publication Number:
  US 20160064946A1
• Time in Patent Office: 1,191 Days
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034
• CPC Class Codes: H04B 5/45 Transponders
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

Provided is an energy charging apparatus including a transponder configured to transmit and receive radio energy, and a resonator configured to transmit the radio energy transmitted from the transponder to at least one external device and transmit the radio energy received from the at least one external device to the transponder, wherein each of the transponder and the resonator is provided in a form of a single module.

Claims

1. An energy charging apparatus comprising:

a transponder configured to transmit and receive energy; and

a resonator configured to transmit the energy transmitted from the transponder to at least one external device and transmit the energy received from the at least one external device to the transponder,

wherein the transponder comprises;

a transmitter configured to transmit the energy to the resonator;

a receiver configured to receive the energy from the resonator; and

a transponder switch configured to selectively connect the resonator with one of the transmitter and the receiver;

wherein the transmitter comprises;

a first transmitter configured to transmit the energy with a first frequency to the resonator;

the resonator configured to transmit the energy with the first frequency to the at least one external device based on a magnetic resonance scheme;

a second transmitter configured to transmit the energy with a second frequency lower than the first frequency to the resonator;

the resonator configured to transmit the energy with the second frequency to the at least one external device based on a magnetic induction scheme; and

a mode changing switch configured to selectively connect the transponder with one of the first transmitter and the second transmitter.

2. The apparatus of claim 1, wherein the high frequency transmitter comprises:

a signal generator configured to generate a signal for the energy with the first frequency;

a power amplifier configured to amplify the signal; and

an impedance matcher configured to match an output impedance of the power amplifier with an input impedance of the resonator.

3. The apparatus of claim 1, wherein the low frequency transmitter comprises:

a signal generator configured to generate a signal for the energy with the second frequency;

a power amplifier configured to amplify the signal; and

an impedance matcher configured to match an output impedance of the power amplifier with an input impedance of the resonator.

4. The apparatus of claim 1, wherein the receiver comprises:

a controller configured to control a control signal and a communication signal of the receiver;

a first receiver configured to receive the energy with the first frequency from the resonator, wherein the resonator receives the energy with the first frequency from the at least one external device based on a magnetic resonance scheme;

a second receiver configured to receive the energy with the second frequency from the resonator, wherein the resonator receives the energy with the second frequency from the at least one external device based on a magnetic induction scheme; and

a mode changing switch configured to selectively connect the transponder with one of the first receiver and the second receiver, thereby performing a switching to one of a first frequency reception mode and a second frequency reception mode.

5. The apparatus of claim 4, wherein the first receiver comprises:

an impedance matcher configured to match an output impedance of the power amplifier with an input impedance of the resonator; and

a rectifier configured to rectify the signal controlled.

6. The apparatus of claim 4, wherein the second receiver comprises:

an impedance matcher configured to match an output impedance of the power amplifier with an input impedance of the resonator; and

a rectifier configured to rectify the signal controlled.

7. The apparatus of claim 1, further comprising:

a battery configured to store the energy.

8. An energy charging method comprising:

transmitting energy received from a transponder to at least one external device using a resonator; and

transmitting the energy received from the at least one external device to the transponder using the resonator,

wherein the transponder comprises;

a transmitter configured to transmit the energy to the resonator;

a receiver configured to receive the energy from the resonator; and

a transponder switch configured to selectively connect the resonator with one of the transmitter and the receiver,

wherein the transmitting of the energy to the at least one external device comprises;

performing a switching to one of a first transmission mode and a second transmission mode by using a mode changing switch included in the transmitter;

transmitting the energy with a first frequency to the at least one external device using the resonator based on a magnetic resonance scheme when a result of the switching corresponds to the first transmission mode; and

transmitting the energy with a second frequency lower than the first frequency to the at least one external device using the resonator based on a magnetic induction scheme when a result of the switching corresponds to the second transmission mode.

9. The method of claim 8, wherein the transmitting of the energy with the first frequency comprises:

generating a signal for the energy with the first frequency;

amplifying the signal; and

controlling the amplified signal to match an output of the resonator.

10. The method of claim 8, wherein the transmitting of the energy with the second frequency comprises:

generating a signal for the energy with the second frequency;

amplifying the signal; and

controlling the amplified signal to match an output of the resonator.

11. The method of claim 8, wherein the transmitting of the energy to the transponder comprises:

changing a mode to one of the first transmission mode and the second transmission mode by using a mode changing switch included in the receiver;

transmitting the energy with the first frequency to the transponder using the resonator, wherein the resonator receives the energy with the first frequency from the at least one external device based on the magnetic resonance scheme when the mode is changed to the first transmission mode; and

transmitting the energy with the second frequency to the transponder using the resonator, wherein the resonator receives the energy with the second frequency from the at least one external device based on the magnetic induction scheme when the mode is changed to the second transmission mode.

12. The method of claim 11, wherein the transmitting of the energy with the first frequency comprises:

controlling a signal for the energy with the first frequency received from the resonator to match an output of the transponder; and

rectifying the signal controlled.

13. The method of claim 11, wherein the transmitting of the energy with the second frequency comprises:

controlling a signal for the energy with the second frequency received from the resonator to match an output of the transponder; and

rectifying the signal controlled.

14. The method of claim 8, further comprising:

storing the energy in a battery; and

transmitting the energy stored from the battery through the transponder and the resonator to at least one external device.

15. A non-transitory computer-readable storage medium comprising a program comprising instructions to cause a computer to perform the method of claim 8.