KR20170124652A - Multiple Coil Magnetic Resonant Wireless Power Transfer System For Improving Wireless Power Transfer Distance - Google Patents

Multiple Coil Magnetic Resonant Wireless Power Transfer System For Improving Wireless Power Transfer Distance Download PDF

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Publication number
KR20170124652A
KR20170124652A KR1020160053744A KR20160053744A KR20170124652A KR 20170124652 A KR20170124652 A KR 20170124652A KR 1020160053744 A KR1020160053744 A KR 1020160053744A KR 20160053744 A KR20160053744 A KR 20160053744A KR 20170124652 A KR20170124652 A KR 20170124652A
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South Korea
Prior art keywords
power
coil
wireless power
power transfer
relay coil
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KR1020160053744A
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Korean (ko)
Inventor
고영훈
류다운
김영현
구경헌
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주식회사 비앤알테크널러지
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Priority to KR1020160053744A priority Critical patent/KR20170124652A/en
Publication of KR20170124652A publication Critical patent/KR20170124652A/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/50—Circuit arrangements or systems for wireless supply or distribution of electric power using additional energy repeaters between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H02J7/025—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

The present invention relates to a wireless power transmission system of a magnetic resonance method using a multi-coil for improving a wireless power transmission distance. The present invention provides the system which wirelessly transmits a power even from a certain distance. According to the present invention, the wireless power transmission system comprises: a power supply device receiving the power from a power supply, and transmitting a signal; a transmission coil resonating the signal transmitted by the power supply device, and transmitting a power signal to a relay coil; the relay coil transmitting the power signal transmitted by the transmission coil from a primary relay coil to an N^th relay coil through an LC resonance; a reception coil receiving the power signal transmitted by the relay coil at last; and a load checking the power signal transmitted by the reception coil.

Description

무선 전력 전송 거리 향상을 위한 다중 코일 자기공진 무선 전력 전송 시스템{Multiple Coil Magnetic Resonant Wireless Power Transfer System For Improving Wireless Power Transfer Distance}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-coil self-resonant wireless power transmission system for improving a wireless power transmission distance,

본 발명은 무선 전력 전송중에 공진 방식을 이용하여 전력을 전달하는 방법에 관한 것으로서, 전력 전달 거리증가를 위한 시스템에 관한 것이다.The present invention relates to a method of transmitting power using a resonance method during wireless power transmission, and more particularly, to a system for increasing the power transmission distance.

최근 신호뿐만 아니라 전력을 무선으로 전송하기 위한 연구들이 활발히 진행 되고 있다. Recently, researches are being actively carried out to transmit not only signals but also electric power by radio.

실생활에서도 많이 볼 수 있는 전동 칫솔, 스마트 폰 충전기는 모두 전자기 유도 방식을 이용한 것이다. 따라서 송신부와 수신부가 거의 접촉되어야 전력이 전송된다는 치명적인 단점을 가지고 있다. Electric toothbrushes and smartphone chargers, which are widely used in real life, all use electromagnetic induction. Therefore, there is a fatal disadvantage that the power is transmitted only when the transmitter and the receiver are in close contact with each other.

따라서 전력 전송 거리를 늘릴 수 있는 자기공진 방식에 대한 연구들이 활발히 진행 되고 있다. Therefore, studies on the self resonance method that can increase the power transmission distance are being actively carried out.

본 발명은 상기한 종래의 문제점을 해결하기 위하여 창안된 것으로서, 어느정도 거리가 떨어진 지점에서도 무선으로 전력이 전달 되는 시스템을 제공 하는 것을 목적으로 한다.SUMMARY OF THE INVENTION It is an object of the present invention to provide a system for wirelessly transmitting electric power even at a distance of a certain distance.

전술한 목적을 달성하기 위한 본 발명의 무선 전력 전송 시스템은 전원을 공급하는 전력공급장치, 전력공급장치로 부터 전력을 받아 전력을 공급해 주는 송신코일, 송신코일로 부터 일정 거리 이상 떨어진 저점에서 전력을 받아 운반에 해주는 중계코일, 중계코일로 부터 전력을 받는 수인코일, 수신한 전력을 소모하는 부하 를 포함하는 것을 특징으로 한다. According to an aspect of the present invention, there is provided a wireless power transmission system including: a power supply for supplying power; a transmission coil for receiving power from the power supply device to supply power; A relay coil for receiving and conveying, a coil for receiving power from the relay coil, and a load for consuming the received power.

전력공급장치는 직류인 신호를 교류 신호로 바꿔서 송신코일에 전달을 한다. The power supply converts the direct current signal into an alternating current signal and transmits it to the transmission coil.

송신코일은 소정 길이의 직경으로 설정된 루프 형태의 안테나 코일모양을 한다. The transmission coil has the shape of a loop antenna coil set to a predetermined diameter.

중계코일은 안테나코일의 직경과 같은 직경으로 설정하고 나선형 형태로 제작한다. 적어도 2개 이상을 갖추고, 공진 주파수가 같게 인덕턴스를 설정한다. 이때,공진주파수 설정을 위해 커패시터를 포함 할 수 있다. The relay coil is set to a diameter equal to the diameter of the antenna coil and is formed in a spiral shape. At least two or more inductances are set with the same resonance frequency. At this time, a capacitor may be included for setting the resonance frequency.

수신코일은 송신코일과 같게 하고 끝단에 부하를 연결한다. The receiving coil should be the same as the transmitting coil and the load connected to the end.

전력공급 장치로 부터 나온 전력이 송신코일을 거쳐 중계코일로 전달된다. 이때 중계코일들의 공진주파수와 전력공급 장치에서 나온 전력의 주파수가 일치하면 신호가 강해져서 다른쪽으로 방사되지않고 중계코일쪽으로 전력신호가 전달된다. 복수개의 중계코일들을 거쳐 최종단에 수신 코일로 전력이 전달되고 마지막 끝단에 부하단에서 전력공급의 유무를 확인 할 수 있다. Power from the power supply is transferred to the relay coil via the transmit coil. At this time, if the resonance frequency of the relay coils coincides with the frequency of the power from the power supply, the signal becomes stronger and the power signal is transmitted to the relay coil without being radiated to the other side. The power is transmitted to the receiving coil at the final stage via a plurality of relay coils and the presence or absence of power supply at the bottom stage can be checked at the last end.

본 발명에 따르면, 사용자가 어느 정도 멀어진 지점에서도 전력을 공급받아서 사용할 수 있게 된다. According to the present invention, power can be supplied to a user at a certain remote location.

. .

이하, 첨부된 도면을 참조하여 본 발명인 다중 코일 자기공진 무선 전력 전송 시스템을 상세하게 설명한다. Hereinafter, a multi-coil self-resonant wireless power transmission system according to the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 구성을 도시한 도면이다. Fig. 1 is a diagram showing a configuration of the present invention.

도 1을 참조하면 본 발명의 시스템은 전원을 공급해 주는 전력공급장치(001)는 전원으로부터 전력을 받아 사인파와 같은 교류 전력을 중계코일(003)들의 공진 주파수와 같은 주파수로 전력을 보낸다. Referring to FIG. 1, a power supply apparatus (001) for supplying power supplies power from a power source and transmits AC power such as a sine wave to a frequency equal to the resonance frequency of relay coils (003).

송신코일(002)은 전력공급장치(001)로부터 교류 전력을 전달받아 송신코일(003)으로 전력을 전달하는데 1차 중계코일(006)과 송신코일(002)이 전자기 유도 방식으로 전력 전달을 한다. The transmission coil 002 receives the AC power from the power supply unit 001 and transfers the power to the transmission coil 003. The primary relay coil 006 and the transmission coil 002 transmit the power in an electromagnetic induction manner .

1차 중계코일(006)으로 전달된 교류 전력은 계속해서 2차 중계코일(007)과 공진을 하여 2차 중계코일(007)에 전력을 전달하고, 2차 중계코일(007)은 3차 중계코일(008)과 공진하여 3차 중계코일(008)에 전력을 전달하고, 3차 중계코일과(008)과 4차 중계코일(009)이 공진하여 4차 중계코일(009)에 전력을 전달한다. 이러한 방식으로 N차 중계코일(010)까지 전력을 전달한후 마지막 수신코일(004)에 전자기 유도 방식으로 전력을 전달후 수신코일(004)에 연결된 부하(005)로 전력 전달을 확인한다. The AC power delivered to the primary relay coil (006) continues to resonate with the secondary relay coil (007) to transmit power to the secondary relay coil (007), and the secondary relay coil (007) Resonates with the coil 008 to transmit electric power to the third relay coil 008. The third relay coil 008 and the fourth relay coil 009 resonate to transmit electric power to the fourth relay coil 009 do. In this manner, the power is transmitted to the N-th relay coil 010, and then the electromagnetic power is transmitted to the last receiving coil 004. Then, the power is transmitted to the load 005 connected to the receiving coil 004. [

도 2는 본 발명의 시스템을 간단하게 나타낸 도면이다. Figure 2 is a simplified representation of the system of the present invention.

도 2를 참조 하면 송신코일(002)와 수신코일(004)는 루프 형태의 모양으로 전력을 주고 받음에 있어서 안테나 역활을 한다. Referring to FIG. 2, the transmitting coil 002 and the receiving coil 004 serve as antennas in exchanging power in a loop shape.

중계코일(003)들은 나선형모양으로 제작하고 공진 주파수는 사용자가 최적의 효율을 낼 수 있는 주파수로 전력이 전송 될 수 있게 제작한다. The relay coils (003) are formed in a spiral shape and the resonance frequency is manufactured such that the power can be transmitted at a frequency at which the user can obtain optimum efficiency.

도 3은 본 발명의 시스템을 간단하게 나타낸 회로도이다. 3 is a circuit diagram briefly showing the system of the present invention.

도 3을 참조 하면 전력공급장치(001)에서 신호가 발생하면 송신코일(002)에서 부터 전력이 전달되는데 코일을 감으면 L(인덕턴스)와 C(커패시턴스)가 생성된다. 각 각의 중계코일(003)들도 역시 L과 C가 생성된다. 이 생성된 L과 C들은 LC 공진에의해 공진 주파수가 정해지고 이 정해진 주파수를 이용해서 전력공급장치(001)에서 해당 주파수로 전력을 공급하면 LC 공진을 통해 전력이 전달된다. Referring to FIG. 3, when a signal is generated in the power supply unit 001, power is transmitted from the transmission coil 002. When a coil is wound, L (inductance) and C (capacitance) are generated. L and C are also generated in each of the relay coils (003). The generated L and C resonance frequencies are determined by the LC resonance, and power is supplied through the LC resonance when power is supplied from the power supply device 001 using the determined frequency.

Claims (1)

전력공급장치(001)에서 송신코일(002)를 통해 전력을 전달해주는 중계코일(003) 및 그 중계코일(003)을 구성하는 1차 중계코일(006)부터 N차 중계코일(010)을 포함하는 공진 방식 무선 전력 전송 시스템.A relay coil 003 for transmitting electric power through the transmission coil 002 in the power supply apparatus 001 and a primary relay coil 006 constituting the relay coil 003 include an Nth relay coil 010 Resonant mode wireless power transmission system.
KR1020160053744A 2016-05-02 2016-05-02 Multiple Coil Magnetic Resonant Wireless Power Transfer System For Improving Wireless Power Transfer Distance KR20170124652A (en)

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