KR20110135540A - Method and apparatus for receiving wireless power - Google Patents

Method and apparatus for receiving wireless power Download PDF

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KR20110135540A
KR20110135540A KR1020100055320A KR20100055320A KR20110135540A KR 20110135540 A KR20110135540 A KR 20110135540A KR 1020100055320 A KR1020100055320 A KR 1020100055320A KR 20100055320 A KR20100055320 A KR 20100055320A KR 20110135540 A KR20110135540 A KR 20110135540A
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South Korea
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wireless power
receiver
transmitter
receiving
plurality
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KR1020100055320A
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Korean (ko)
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이인선
황찬수
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삼성전자주식회사
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Publication of KR20110135540A publication Critical patent/KR20110135540A/en

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/02Control of position or course in two dimensions
    • G05D1/021Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0276Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle
    • G05D1/0278Control of position or course in two dimensions specially adapted to land vehicles using signals provided by a source external to the vehicle using satellite positioning signals, e.g. GPS
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J5/00Circuit arrangements for transfer of electric power between ac networks and dc networks
    • H02J5/005Circuit arrangements for transfer of electric power between ac networks and dc networks with inductive power transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • H02J7/025Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter using non-contact coupling, e.g. inductive, capacitive
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • H04B5/0025Near field system adaptations
    • H04B5/0037Near field system adaptations for power transfer
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWN ENERGY USE
    • Y02D70/00Techniques for reducing energy consumption in wireless communication networks

Abstract

PURPOSE: A method and apparatus for receiving a wireless power is provided to increase transmitting and receiving efficiency in wireless power by receiving wireless power from a plurality of transmitters. CONSTITUTION: In a method and apparatus for receiving a wireless power, a plurality of transmitters transmitting wireless power are detected. The efficiency of receiving signal transmitted from the plural transmitter. A plurality of connection request messages are transmitted to the plural transmitters. The wireless power is received to perform a test and the transmission efficiency of the wireless power. More than two transmits transmitting wireless power are selected. The wireless power is received from the selected more than two transmitter.

Description

무선 전력 수신을 위한 수신기 및 그의 무선 전력 수신 방법{Method and Apparatus for receiving wireless power} The receiver and its wireless power receiving method for a wireless power receiving {Method and Apparatus for receiving wireless power}

기술분야는 무선 전력 수신을 위한 수신기 및 그의 무선 전력 수신 방법에 관한 것으로서, 복수 개의 송신기로부터 무선 전력을 동시에 수신할 수 있는 무선 전력 수신을 위한 수신기 및 그의 무선 전력 수신 방법에 관한 것이다. Art is related to a receiver, and its wireless power receiving method for a wireless power receiver, to a receiver and its wireless power receiving method for a wireless power received from the plurality of transmitters that can receive a wireless power at the same time.

휴대용 전자제품의 특성 상, 배터리 성능이 중요한 문제로 대두되고 있다. The characteristics of portable electronic products, battery performance is emerging as an important issue. 일반적으로, 휴대용 전자제품은 전력선(Power Line)을 이용하여 전력(power)을 제공받는다. In general, portable electronic devices are provided with a power (power) using a power line (Power Line). 반면, 무선 전력 전송 기술(Wireless Power Transmission)이 휴대용 전자제품에 적용되면, 휴대용 전자제품은 이동 중에도 전력선 없이 전력을 제공받을 수 있다. On the other hand, when the wireless power transmission technology (Wireless Power Transmission) is applied to portable electronic devices, portable electronics can be supplied power without a power line while on the move. 그러나, 휴대용 전자제품 주변에 무선 전력을 송신하는 송신기가 복수 개 있는 경우, 복수 개의 송신기와 휴대용 전자제품 간의 동기화가 이루어지지 않아, 무선 전력의 전송 효율은 저하된다. However, if a plurality of the transmitter for transmitting the wireless power around the portable electronic devices, the synchronization between a plurality of transmitters and a portable electronic products do not occur, the transmission efficiency of the wireless power is lowered.

일 측면에 있어서, 무선 전력을 전송하는 복수 개의 송신기들을 인지하는 단계; In one aspect, the method for recognizing a plurality of transmitters for transmitting the wireless power; 상기 복수 개의 송신기들 중 상기 수신기에게 상기 무선 전력을 전송할 두 개 이상의 송신기를 선택하는 단계; Selecting more than one transmitter to the receiver of the plurality of transmitters transmitting the wireless power; 및 상기 선택된 두 개 이상의 송신기로부터 상기 무선 전력을 수신하는 단계를 포함하는 수신기의 무선 전력 수신 방법이 제공된다. And the wireless power receiving method of a receiver comprising the step of receiving the wireless power from the selected more than one transmitter is provided.

상기 인지하는 단계는, 시분할 또는 주파수 분할에 의한 인 밴드 시그널링(In-band signaling) 방식을 이용한다. The method comprising that the above is used for in-band signaling (In-band signaling) scheme by a time division or frequency division.

상기 선택하는 단계는, 상기 복수 개의 송신기들로부터 전송되는 신호들 각각의 수신 효율을 측정하는 단계; Wherein said selection comprises the steps of: measuring each received efficiency signals transmitted from the plurality of transmitters; 상기 측정된 수신 효율을 포함하는 접속(Association) 요청 메시지를 상기 복수 개의 송신기들에게 전송하는 단계; Sending a connection (Association) request message including the measured reception efficiency for the plurality of transmitters; 상기 복수 개의 송신기들로부터 테스트를 위한 무선 전력을 수신하여 상기 무선 전력의 전송 효율을 측정하는 단계; The step of receiving the wireless power for testing from the plurality of transmitter measures the transmission efficiency of the wireless power; 및 상기 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는 단계를 포함한다. And using the transmission efficiency of the measured wireless power comprises the step of selecting the more than one transmitter to transmit the wireless power.

상기 접속 요청 메시지는 상기 복수 개의 송신기들과 상기 수신기와의 매칭을 위한 메시지이며, 상기 수신기가 상기 무선 전력을 수신하는 주기 정보 및 상기 수신기가 수신할 무선 전력의 용량 정보를 더 포함한다. The access request message is a message for matching with the plurality of transmitters and the receiver further comprises period information and capability information of the wireless power receiver to the receiver that the receiver receiving the wireless power.

상기 인지하는 단계는, 상기 수신기와 상기 복수 개의 송신기들 간의 거리를 기반으로 상기 복수 개의 송신기들을 인지한다. The method comprising that the above will be recognized as the receiver and the distance between the base of the plurality of transmitters of said plurality of transmitters.

상기 선택하는 단계는, 상기 거리가 측정된 복수 개의 송신기들에게 접속(Association) 요청 메시지를 전송하는 단계; Wherein said selection comprises: transmitting a connection (Association) request message to a plurality of transmitters of the distance is measured; 상기 복수 개의 송신기들로부터 테스트를 위한 무선 전력을 수신하여 상기 테스트를 위한 무선 전력의 전송 효율을 측정하는 단계; The step of receiving the wireless power for testing from the plurality of transmitter measures the transmission efficiency of the wireless power for the test; 및 상기 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는 단계를 포함한다. And using the transmission efficiency of the measured wireless power comprises the step of selecting the more than one transmitter to transmit the wireless power.

상기 수신기는 GPS(Global Positioning System) 및 WiFi(Wireless Fidelity)의 네트워크 중 적어도 하나를 이용하여 상기 거리를 측정한다. The receiver measures the distance using at least one of a network of GPS (Global Positioning System) and WiFi (Wireless Fidelity).

상기 인지하는 단계는, 상기 복수 개의 송신기들로부터 전송되는 신호들을 수신하는 단계; The method comprising that the above, the method comprising: receiving signals transmitted from the plurality of transmitters; 및 상기 수신된 신호들의 개수로 상기 송신기들을 인지하는 단계를 포함한다. And a step for recognizing the transmitter to the number of the received signals.

다른 측면에 있어서, 상기 무선 전력을 전송하는 복수 개의 송신기들을 인지하고, 상기 인지된 복수 개의 송신기들 중 상기 수신기에게 상기 무선 전력을 전송할 두 개 이상의 송신기를 선택하는 제어부; In another aspect, the control unit for recognizing a plurality of transmitters for transmitting the wireless power and transmitting the power to the radio receiver of a plurality of said transmitter or optional two or more transmitters; 및 상기 선택된 두 개 이상의 송신기로부터 상기 무선 전력을 수신하는 수신부를 포함하는 무선 전력 수신을 위한 수신기가 제공된다. And a receiver for the wireless power receiving comprising a receiver configured to receive the wireless power is provided from the selected more than one transmitter.

상기 제어부는, 시분할 또는 주파수 분할에 의한 인 밴드 시그널링(In-band signaling) 방식을 이용하여 상기 복수 개의 송신기들을 인지한다. Wherein, using the in-band signaling (In-band signaling) scheme by a time division or frequency division to recognize the plurality of transmitters.

상기 복수 개의 송신기들로부터 전송되는 신호들의 수신 효율을 각각 측정하는 제1측정부; A first measurement unit for respectively measuring a reception efficiency of the signals transmitted from the plurality of transmitters; 상기 측정된 수신 효율을 포함하는 접속(Association) 요청 메시지를 상기 복수 개의 송신기들에게 전송하는 통신부; A connection (Association) request message including the measured reception efficiency of the communication unit to transmit to the plurality of transmitters; 및 상기 복수 개의 송신기들로부터 전송되는 테스트를 위한 무선 전력의 전송 효율을 측정하는 제2측정부를 더 포함하며, 상기 제어부는, 상기 제2측정부에서 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택한다. And further comprising: a second measurement for measuring a transmission efficiency of the wireless power for testing transmitted from the plurality of transmitters, wherein, the radio using the transmission efficiency of the wireless power measured by the second measurement unit select more than one transmitter to transmit the power.

상기 접속 요청 메시지는 상기 복수 개의 송신기들과 상기 수신기와의 매칭을 위한 메시지이며, 상기 제어부는, 상기 수신기가 상기 무선 전력을 수신하는 주기 정보 및 상기 수신기가 수신할 무선 전력의 용량 정보를 더 포함하는 상기 접속 요청 메시지를 생성한다. The access request message is a message for matching with the plurality of transmitters and the receiver, wherein the control unit further comprising: a period information and capability information of the wireless power to the reception of the receiver to the receiver receiving the wireless power that generates the access request message.

상기 제어부는, 상기 수신기와 상기 복수 개의 송신기들 간의 거리를 기반으로 상기 복수 개의 송신기들을 인지한다. The control unit may, based on the distance between the receiver and the transmitter to recognize the plurality of the plurality of transmitters.

상기 거리를 측정하는 제1측정부; A first measuring section for measuring said distance; 접속(Association) 요청 메시지를 상기 거리가 측정된 복수 개의 송신기들에게 전송하는 통신부; Connection (Association) communication unit for transmitting a request message to a plurality of transmitters of the distance is measured; 및 상기 복수 개의 송신기들로부터 전송되는 테스트를 위한 무선 전력의 전송 효율을 측정하는 제2측정부를 더 포함하며, 상기 제어부는, 상기 제2측정부에서 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택한다. And further comprising: a second measurement for measuring a transmission efficiency of the wireless power for testing transmitted from the plurality of transmitters, wherein, the radio using the transmission efficiency of the wireless power measured by the second measurement unit select more than one transmitter to transmit the power.

상기 거리는, GPS(Global Positioning System) 및 WiFi(Wireless Fidelity)의 네트워크 중 적어도 하나를 이용하여 측정된다. The distance is measured using at least one of a network of GPS (Global Positioning System) and WiFi (Wireless Fidelity).

무선 전력 수신을 위한 수신기 및 그의 무선 전력 수신 방법이 제공된다. The receiver and its wireless power receiving method is provided for the wireless power receiving. 무선 전력 수신을 위한 수신기는 무선 파워를 복수 개의 송신기로부터 동시에 수신할 수 있다. A receiver for the wireless power receiving may receive at the same time, the wireless power from the plurality of transmitters. 따라서, 무선 전력의 송수신 효율은 높아진다. Thus, the transmission and reception efficiency of the wireless power is high.

또한, 무선 전력 수신을 위한 수신기는 무선 전력에 필요한 송신기의 개수 및 전송량을 직접 결정할 수 있으므로, 보다 효율적으로 무선 전력을 수신 및 충전할 수 있다. In addition, a receiver for receiving wireless power, so to determine the number and the transfer amount of a transmitter for wireless power directly, may receive and charge the wireless power more efficiently.

도 1은 예시적인 실시 예에 따른 무선 전력 전송 시스템을 나타낸다. 1 illustrates a wireless power transmission system according to an example embodiment.
도 2는 무선 전력 송수신을 위한 시스템의 일 예를 도시한 도면이다. 2 is a view showing an example of a system for wireless power transmission.
도 3은 도 2에 도시된 제1WP 수신기의 일 예를 도시한 블록도이다. Figure 3 is a block diagram illustrating an example of the first 1WP receiver shown in Fig.
도 4는 무선 전력 송수신을 위한 시스템의 다른 예를 도시한 도면이다. 4 is a view showing another example of a system for wireless power transmission.
도 5는 도 4에 도시된 제2WP 수신기의 일 예를 도시한 블록도이다. 5 is a block diagram illustrating an example of the first 2WP receiver shown in Fig.
도 6은 제1WP 수신기의 무선 전력 수신 방법의 일 예를 설명하기 위한 흐름도이다. 6 is a flow chart for explaining an example of a method of a wireless power receiving 1WP receiver.
도 7은 제2WP 수신기의 무선 전력 수신 방법의 다른 예를 설명하기 위한 흐름도이다. 7 is a flow chart for explaining another example of the wireless power receiving method of claim 2WP receiver.
도 8은 본 발명의 일 실시예에 따른 meta-structured 공진기를 나타낸 도면이다. Figure 8 is a view of the meta-structured resonator according to one embodiment of the present invention.
도 9는 도 8에 도시된 공진기의 등가 회로를 나타낸 도면이다. 9 is a view showing the equivalent circuit of the resonator shown in Fig.
도 10은 본 발명의 다른 일 실시예에 따른 meta-structured 공진기를 나타낸 도면이다. Figure 10 is a view showing the meta-structured resonator according to another embodiment of the present invention.
도 11은 도 10의 커패시터의 삽입 위치를 상세하게 나타내는 도면이다. 11 is a view showing the detail of the inserting position of the capacitor of Fig.

이하, 본 발명의 실시 예를 첨부된 도면을 참조하여 상세하게 설명한다. With reference to the accompanying drawings, an embodiment of the present invention will be described in detail.

먼저, 무선 전력전송 시스템에 이용되는 무선 전력전송 기술을 설명한다. First, a wireless power transmission technique used in the wireless power transmission system. 무선전력전송 기술은 크게 전자기 유도 방식, 전파 수신 방식, 전장 혹은 자장의 공진방식 등 3가지 방식으로 구분할 수 있다. Wireless power transmission techniques can greatly be classified into three methods such as an electromagnetic induction method, radio reception method, the resonant mode of full-length or a magnetic field.

첫째, 전자기 유도 방식은 서로 다른 두 개의 코일을 가까이 접근 시킨 후 한쪽 코일에 교류 전류를 흐르게 하면 자속이 발생하게 되고 이를 통해 다른 코일 한쪽에도 기전력이 발생하는 현상을 이용한다. First, the electromagnetic induction type is to flow together when the AC current in the coil after the one that is closer to the other two coils to generate a magnetic flux through which utilizes the phenomenon that the electromotive force is generated in the other coil side. 전자기 유도방식은 전력 이용 효율이 대략 60~98%에 이르는 등 고효율 및 실용화가 가장 많이 진행되어 있다. Electromagnetic induction type has a high efficiency and power use efficiency is practically used, such as up to about 60-98% proceeds most.

둘째, 전파 수신 방식은 전파 에너지를 안테나로 수신하여 이용하는 것으로 교류 전파 파형을 정류회로를 통해 직류로 변환하여 전력을 얻는다. Second, the radio reception system converts an alternating-current electric wave waveform used to receive radio frequency energy to an antenna into a direct current via a rectifier circuit to give a power. 전파수신방식은 가장 긴 거리간(수 m 이상) 무선전력전송이 가능하다. Radio reception system are possible, the longest distance between (the number more than m) wireless power transmission.

셋째, 공진방식은 전장 혹은 자장의 공진을 이용한 것으로 기기간에 동일 주파수로 공진하여 에너지를 전달한다. Third, the resonance method is the same as the resonant frequency on the resonance of the electrical component or between devices by using magnetic transfer energy. 자장의 공진을 이용하는 경우 LC공진기 구조를 활용한 자계공진(magnetic resonance coupling)을 이용하여 전력을 발생시킨다. The case of using the resonance of the magnetic field using a magnetic field resonance (resonance magnetic coupling) utilizing LC resonator structure to generate electrical power. 자계공진방식은 사용 주파수의 파장에 비해 짧은 거리의 근접장(near field)효과를 이용하는 기술로써, 전파 수신 방식과는 달리 비방사형(non-radiative) 에너지 전송이며, 송수신부간의 공진주파수를 일치시켜 전력을 전송한다. The magnetic field resonance method is a technology of using a near-field (near field) effect of the short distance compared with the wavelength of the used frequency, the radio reception system and the non-scanning (non-radiative) and energy transmission unlike the power by matching the resonance frequency between the transmission and reception unit to be transmitted. 자계공진방식을 통해 전력 전송효율은 약 50~60% 정도로 높아지며, 이 정도의 효율은 전파 방사를 통한 전파 수신형 보다 상당히 높은 것이다. Power transmission efficiency through magnetic field resonance system is high, at about 50-60%, the efficiency of this degree is significantly higher than the new radio wave through the radio wave radiation. 송수신기간 거리는 약 수 m로써, 비록 전파 수신 방식보다는 근거리에서 사용되는 기술이나, 수 mm 이내의 전자 유도형 방식보다는 매우 먼 거리에서도 전력 전송이 가능하게 된다. Distance transmission period by about several m, it is possible, although the radio reception system so far in power transmission distance than the electromagnetic induction type of system within technical or several mm used in the local area instead.

도 1은 예시적인 실시 예에 따른 무선 전력 전송 시스템을 나타낸다. 1 illustrates a wireless power transmission system according to an example embodiment.

도 1의 예에서, 무선 전력 전송 시스템을 통해 전송되는 무선 전력은 공진 전력(resonance power)이라 가정한다. In the example of Figure 1, the wireless power transmission via a wireless power transmission system is assumed to be the resonant power (resonance power).

도 1을 참조하면, 무선 전력 전송 시스템은 소스와 타겟으로 구성되는 소스-타겟 구조이다. 1, the wireless power transmission system includes a source constituted by the source and target - the target structure. 즉, 무선 전력 전송 시스템은 소스에 해당하는 공진 전력 전송 장치(110)와 타겟에 해당하는 공진 전력 수신 장치(120)를 포함한다. That is, the wireless power transmission system comprises a resonant power receiving apparatus 120 corresponding to the resonant power transmission unit 110 and the target for the source.

공진 전력 전송 장치(110)는 외부의 전압 공급기로부터 에너지를 수신하여 공진 전력을 발생시키는 소스부(111) 및 소스 공진기(115)를 포함한다. Resonant power transmission unit 110 is configured to receive energy from an external voltage supply and a source region 111 and the source resonator 115 to generate a resonant power. 또한, 공진 전력 전송 장치(110)는 공진주파수 또는 임피던스 매칭을 수행하는 매칭 제어부(Matching control)(113)를 더 포함하여 구성될 수 있다. In addition, the resonant power transmission unit 110 may be configured to further include a matching controller (Matching control) (113) for performing impedance matching or resonant frequency.

소스부(111)는 외부의 전압 공급기로부터 에너지를 수신하여 공진 전력을 발생시킨다. Source unit 111 receives energy from an external supply voltage to generate a resonant power. 소스부(111)는 외부 장치로부터 입력되는 교류 신호의 신호 레벨을 원하는 레벨로 조정하기 위한 AC-AC Converter, AC-AC Converter로부터 출력되는 교류 신호를 정류함으로써 일정 레벨의 DC 전압을 출력하는 AC-DC Converter, AC-DC Converter에서 출력되는 DC 전압을 고속 스위칭함으로써 수 MHz ~ 수십MHz 대역의 AC 신호를 생성하는 DC-AC Inverter를 포함할 수 있다. Source unit 111 AC- outputting a DC voltage of a predetermined level by rectifying the AC signal output from the AC-AC Converter, AC-AC Converter for adjusting a signal level of an AC signal input from the external device to the desired level a DC voltage outputted from the DC Converter, AC-DC Converter may comprise a DC-AC Inverter for generating the AC signal of the number MHz ~ several tens MHz band by high-speed switching.

매칭 제어부(Matching control)(113)는 소스 공진기(115)의 공진 대역폭(Resonance Bandwidth) 또는 소스 공진기(115)의 임피던스 매칭 주파수를 설정한다. Matched control (Matching control) (113) sets the impedance matching of the resonant frequency bandwidth (Bandwidth Resonance) or the source resonator 115 of the source resonator 115. The 매칭 제어부(Matching control)(113)는 소스 공진 대역폭 설정부(도시 되지 않음) 또는 소스 매칭 주파수 설정부(도시 되지 않음) 중 적어도 하나를 포함한다. Matched control (Matching control) (113) includes at least one of a source resonance bandwidth setting unit (not shown) or the source matching frequency setting unit (not shown). 소스 공진 대역폭 설정부는 소스 공진기(115)의 공진 대역폭(Resonance Bandwidth)을 설정한다. Source resonance bandwidth setting section sets the resonant bandwidth (Bandwidth Resonance) of the source resonator 115. 소스 매칭 주파수 설정부는 소스 공진기(115)의 임피던스 매칭 주파수를 설정한다. Source matching the frequency setting section sets the impedance matching frequency of the source resonator 115. 이때, 소스 공진기의 공진 대역폭(Resonance Bandwidth) 또는 소스 공진기의 임피던스 매칭 주파수 설정에 따라서 소스 공진기(115)의 Q-factor가 결정될 수 있다. At this time, the Q-factor of the resonator can be determined bandwidth (Bandwidth Resonance) or the impedance matching frequency setting of the source resonator of the source cavity resonator according sources 115. The

소스 공진기(115)는 전자기(electromagnetic) 에너지를 타겟 공진기로 전달(transferring)한다. Source resonator 115 is passed (transferring) an electromagnetic (electromagnetic) energy to the target cavity. 즉, 소스 공진기(115)는 타겟 공진기(121)와의 마그네틱 커플링(101)을 통해 공진 전력을 타겟 장치(120)로 전달한다. That is, the source resonator 115 sends a resonant power to the target device 120 via the magnetic coupling 101 with the target resonator 121. The 이때, 소스 공진기(115)는 설정된 공진 대역폭 내에서 공진한다. At this time, the source resonator 115 resonates within the established resonant bandwidth.

공진 전력 수신 장치(120)는 타겟 공진기(121), 공진주파수 또는 임피던스 매칭을 수행하는 Matching control부(123) 및 수신된 공진 전력을 부하로 전달하기 위한 타겟부(125)를 포함한다. Resonant power receiving device 120 includes a target portion 125 for transmitting the Matching control unit 123 and the received power resonant cavity to perform a target 121, the resonant frequency or impedance matching to the load.

타겟 공진기(121)는 소스 공진기(115)로부터 전자기(electromagnetic) 에너지를 수신한다. Target resonator 121 receives the electromagnetic (electromagnetic) energy from the source to the resonator (115). 이때, 타겟 공진기(121)는 설정된 공진 대역폭 내에서 공진한다. At this time, the target resonator 121 resonates within the established resonant bandwidth.

Matching control부(123)는 타겟 공진기(121)의 공진 대역폭(Resonance Bandwidth) 또는 타겟 공진기(121)의 임피던스 매칭 주파수 중 적어도 하나를 설정한다. Matching control unit 123 sets at least one of the impedance matching of the resonant frequency bandwidth (Bandwidth Resonance) or target the resonator 121 of the target cavity (121). Matching control부(123)는 타겟 공진 대역폭 설정부(도시 되지 않음) 또는 타겟 매칭 주파수 설정부(도시 되지 않음) 중 적어도 하나를 포함한다. Matching The control unit 123 comprises at least one of the target resonance bandwidth setting unit (not shown) or the matching target frequency setting unit (not shown). 타겟 공진 대역폭 설정부는 타겟 공진기(121)의 공진 대역폭(Resonance Bandwidth)을 설정한다. Target resonance bandwidth setting section sets the resonant bandwidth (Bandwidth Resonance) of the target cavity (121). 타겟 매칭 주파수 설정부는 타겟 공진기(121)의 임피던스 매칭 주파수를 설정한다. Target matching the frequency setting section sets the impedance matching frequency of the target cavity (121). 이때, 타겟 공진기(121)의 공진 대역폭(Resonance Bandwidth) 또는 타겟 공진기(121)의 임피던스 매칭 주파수 설정에 따라서 타겟 공진기(121)의 Q-factor가 결정될 수 있다. At this time, the Q-factor of the target resonator 121 may be determined in accordance with the resonant bandwidth (Bandwidth Resonance) or the impedance matching frequency setting of the target cavity 121 of the target cavity (121).

타겟부(125)는 수신된 공진 전력을 부하로 전달한다. Target section 125 transmits the received power to a resonant load. 이때, 타겟부(125)는 소스 공진기(115)로부터 타겟 공진기(121)로 수신되는 AC 신호를 정류하여 DC 신호를 생성하는 AC-DC Converter와, DC 신호의 신호 레벨을 조정함으로써 정격 전압을 디바이스(device) 또는 부하(load)로 공급하는 DC-DC Converter를 포함할 수 있다. In this case, the target portion 125 is a device for the rated voltage by adjusting the signal level of the AC-DC Converter with, DC signal to generate a DC signal by rectifying the AC signal received by the target resonator 121 from the source to the resonator 115 It may include a DC-DC Converter for supplying with (device) or a load (load).

소스 공진기(115) 및 타겟 공진기(121)는 헬릭스(helix) 코일 구조의 공진기 또는 스파이럴(spiral) 코일 구조의 공진기, 또는 meta-structured 공진기로 구성될 수 있다. Source resonator 115 and the target resonator 121 may be of a helix (helix) of the cavity resonator or the spiral (spiral), the coil structure of the coil structure, or meta-structured resonator.

도 1을 참조하면, 큐-펙터의 제어 과정은, 소스 공진기(115)의 공진 대역폭(Resonance Bandwidth) 및 타겟 공진기(121)의 공진 대역폭을 설정하고, 소스 공진기(115)와 타겟 공진기(121) 사이의 마그네틱 커플링을 통해 전자기(electromagnetic) 에너지를 상기 소스 공진기(115)로부터 상기 타겟 공진기(121)로 전달(transferring)하는 것을 포함한다. 1, the queue-control process of the factor is, the resonance bandwidth (Resonance Bandwidth) and set the resonance bandwidth of the target resonator 121, and the source resonator 115 and the target resonator 121 of the source resonator 115 through a magnetic coupling between an electromagnetic (electromagnetic) energy from the source cavity 115 involves the transmission (transferring) to the target cavity 121. the 이때, 소스 공진기(115)의 공진 대역폭은 타겟 공진기(121)의 공진 대역폭 보다 넓거나 좁게 설정될 수 있다. At this time, the resonance bandwidth of the source resonator 115 may be set narrower or wider than the bandwidth of the target resonance cavity 121. The 즉, 소스 공진기(115)의 공진 대역폭이 타겟 공진기(121)의 공진 대역폭 보다 넓거나 좁게 설정됨으로써, 소스 공진기의 BW-factor와 상기 타겟 공진기의 BW-factor는 서로 불평형(unbalance) 관계가 유지된다. That is, by being resonant bandwidth wider or narrower set than the resonance bandwidth of the source resonator 115, the target cavity (121), BW-factor of the target cavity and BW-factor of the source resonator is another unbalanced (unbalance) between the holding .

공진 방식의 무선 전력 전송에서, 공진 대역폭은 중요한 factor이다. In the wireless power transmission of the resonance system, the resonance bandwidth is an important factor. 소스 공진기(115)와 타겟 공진기(121) 사이의 거리 변화, 공진 임피던스의 변화, 임피던스 미스 매칭, 반사 신호 등을 모두 고려한 Q-factor를 Qt라 할 때, Qt는 수학식 1과 같이 공진 대역폭과 반비례 관계를 갖는다. When referred to the source resonator 115 and the target resonator 121, the distance variation between the change of the resonance impedance, the impedance mismatching, taking into account all of the reflected signals, such as Q-factor Qt, Qt is the resonant bandwidth, as shown in equation (1) It has an inverse relationship.

Figure pat00001

수학식 1에서, f0는 중심주파수, In Equation 1, f0 is the center frequency,

Figure pat00002
는 대역폭, Bandwidth,
Figure pat00003
는 공진기 사이의 반사 손실, BW S 는 소스 공진기(115)의 공진 대역폭, BW D 는 타겟 공진기(121)의 공진 대역폭을 나타낸다. Is the resonant bandwidth, BW D of the return loss between the resonator, the resonator has a source S BW (115) represents the resonance bandwidth of the target cavity (121). 본 명세서에서 BW-factor는 1/ BW S 또는 1/BW D 를 의미한다. BW-factor in the present specification refers to a 1 / BW, or S 1 / BW D.

한편, 소스 공진기(115)와 타겟 공진기(121) 간의 거리가 달라지거나, 둘 중 하나의 위치가 변하는 등의 외부 영향에 의하여, 소스 공진기(115)와 타겟 공진기(121) 간의 임피던스 미스 매칭이 발생할 수 있다. On the other hand, result in impedance mismatching between the source resonator 115 and the target resonator 121 or the distance between the different, by external influence, such as the one of the position change of the two source resonator 115 and the target resonator 121 can. 임피던스 미스 매칭은 전력 전달의 효율을 감소시키는 직접적인 원인이 될 수 있다. Impedance mismatching can be a direct cause of reducing the efficiency of power transfer. 매칭 제어부(Matching control)(113)는 전송신호의 일부가 반사되어 돌아오는 반사파를 감지함으로써, 임피던스 미스 매칭이 발생한 것으로 판단하고, 임피던스 매칭을 수행할 수 있다. Matched control (Matching control) (113) may be detected by the reflected wave to return a part of the transmission signal reflected, it is determined that the impedance mismatch occurred, performing impedance matching. 또한, 매칭 제어부(Matching control)(113)는 반사파의 파형 분석을 통해 공진 포인트를 검출함으로써, 공진 주파수를 변경할 수 있다. Further, by detecting the resonance point matching controller (Matching control) (113) through the waveform analysis of the reflected wave, it is possible to change the resonance frequency. 여기서, 매칭 제어부(Matching control)(113)는 반사파의 파형에서 진폭(amplitude)이 최소인 주파수를 공진 주파수로 결정할 수 있다. Here, the matching controller (Matching control) (113) may determine the amplitude (amplitude) of the minimum frequency to the resonance frequency in the waveform of the reflected wave.

도 2는 무선 전력 송수신을 위한 시스템의 일 예를 도시한 도면이다. 2 is a view showing an example of a system for wireless power transmission.

도 2를 참조하면, 무선 전력 송수신을 위한 시스템은 제1WP 수신기(200), 제1무선 전력(WP: Wireless Power) 송신기(300) 및 제2WP 송신기(400)를 포함한다. 2, a system for wireless power transmission and reception is the 1WP receiver 200, a first wireless power: include (WP Wireless Power) transmitter 300 and a transmitter 2WP 400.

제1WP 수신기(200), 제1WP 송신기(300) 및 제2WP 송신기(400)는 도 1을 참조하여 설명한 무선 전력 전송 시스템에서 사용될 수 있다. The 1WP receiver 200, a 1WP transmitter 300 and the 2WP transmitter 400 may be used in the wireless power transmission system described with reference to FIG. 제1WP 수신기(200)는 무선 전력 충전이 가능한 모든 장치일 수 있다. The 1WP receiver 200 may be any device capable of wireless power charging.

제1WP 송신기(300)는 도 1의 무선 전력 송신 기술을 이용하여 제1공진 주파수를 통해 제1무선 전력을 발생시킨다. The 1WP transmitter 300 generates a first wireless power through a first resonance frequency by using a wireless power transmission techniques of FIG. 제1커버리지(C1)는 제1WP 수신기(200)가 제1무선 전력을 수신할 수 있는 영역이다. A first coverage (C1) is a region in which the first 1WP receiver 200 can receive a first wireless power.

제2WP 송신기(400)는 도 1의 무선 전력 송신 기술을 이용하여 제2공진 주파수를 통해 제2무선 전력을 발생시킨다. The 2WP transmitter 400 generates a second wireless power through the second resonance frequency by using a wireless power transmission techniques of FIG. 제2커버리지(C2)는 제1WP 수신기(200)가 제2무선 전력을 수신할 수 있는 영역이다. Second coverage (C2) is a region in which the first 1WP receiver 200 can receive a second wireless power.

제1WP 송신기(300) 및 제2WP 송신기(400)는 시분할 또는 주파수 분할에 의한 인 밴드 시그널링(In-band signaling) 방식을 이용하여 통신한다. The 1WP transmitter 300 and the 2WP transmitter 400 is in communication with the in-band signaling (In-band signaling) scheme by a time division or frequency division. 즉, 제1WP 송신기(300) 및 제2WP 송신기(400)는 무선 전력의 송수신에 필요한 정보를 기설정된 신호에 실어 제1WP 수신기(200)에게 전송한다. That is, the transmission to the 1WP transmitter 300 and the transmitter 2WP 400 1WP the receiver 200 put on the predetermined signal information required for transmission and reception of wireless power.

한편, 도 2에 도시된 바와 같이, 제1WP 수신기(200)는 제1커버리지(C1)와 제2커버리지(C2)의 중첩 영역에 위치할 수 있다. On the other hand, as shown in Figure 2, the 1WP receiver 200 may be located in the overlapping coverage area of ​​the first (C1) and the second coverage (C2). 이러한 경우, 제1WP 수신기(200)는 제1WP 송신기(300) 및 제2WP 송신기(400)로부터 제1무선 전력과 제2무선 전력을 수신할 수 있다. In this case, the 1WP receiver 200 may receive a first wireless power and power from the second radio 1WP transmitter 300 and the transmitter 2WP 400. 이로써, 제1WP 수신기(200)는 무선 전력의 수신 효율을 높일 수 있다. Thus, the 1WP receiver 200 can improve the receiving efficiency of the wireless power. 이러한 무선 전력의 동시 송수신이 가능하기 위해서, 제1WP 송신기(300) 및 제2WP 송신기(400)는 동일한 주파수로 무선 전력을 전송할 수 있다. In order to enable the simultaneous transmission and reception of wireless power, the 1WP transmitter 300 and the 2WP transmitter 400 may transmit a wireless power at the same frequency. 또한, 제1WP 수신기(200)는 동시에 3개 이상의 WP 송신기로부터 무선 전력을 제공받아 충전할 수 있다. Further, the 1WP receiver 200 receives at the same time provide a wireless electrical power from at least three transmitter WP can be charged. 이하에서는 제1WP 송신기(300) 및 제2WP 송신기(400)를 예로 들어 설명한다. Hereinafter will be described, for the 1WP transmitter 300 and the 2WP transmitter 400 as an example.

도 3은 도 2에 도시된 제1WP 수신기의 일 예를 도시한 블록도이다. Figure 3 is a block diagram illustrating an example of the first 1WP receiver shown in Fig.

도 3에 도시된 제1WP 수신기(200)는 현재 제1WP 송신기(300)에서만 제1무선 전력을 수신하거나, 또는 제1WP 송신기(300) 및 제2WP 송신기(400)로부터 제1무선 전력과 제2무선 전력을 동시에 수신하거나, 제2무선 전력만을 수신하거나 또는 무선 전력을 전혀 수신하고 있지 않을 수 있다. The first 1WP receiver 200 shown in Figure 3 are the 1WP transmitter 300 only on the first receiving wireless power, or the 1WP transmitter 300 and the 2WP transmitter first wireless power and the second from 400 receiving wireless power, or at the same time, it is possible not at all, and only receives the reception power or wireless second wireless power.

도 3을 참조하면, 제1WP 수신기(200)는 제1기능 블록(210), 제1통신부(220), 제1측정부(230), 제1제어부(240), 제1수신부(250), 제2측정부(260) 및 제1충전부(270)를 포함할 수 있다. 3, the first 1WP receiver 200 includes a first function block 210, the first communication unit 220, a first measuring unit 230, a first controller 240, a first receiver 250, 2 may include a measurement unit 260 and the first charging section 270.

제1기능 블록(210)은 제1WP 수신기(200)의 고유 기능을 수행할 수 있다. The first functional block 210 may perform a unique function of the 1WP receiver 200. 예를 들어, 제1WP 수신기(200)가 DMB(Digital Multimedia Broadcasting) 기능을 가지는 모바일 폰인 경우, 제1기능 블록(210)은 DMB 시청을 위한 동작을 수행하는 모듈을 포함할 수 있다. For example, the 1WP when the receiver 200 in a mobile phone, having a DMB (Digital Multimedia Broadcasting) function, the first function block 210 may include a module for performing the operations for watching DMB.

제1WP 송신기(300) 및 제2WP 송신기(400)는 In-band signaling 방식을 이용하여 각각 제1비컨(beacon)과 제2비컨을 전송한다. The 1WP transmitter 300 and the transmitter 2WP 400 respectively transmits the first beacon (beacon) and a second beacon by using the In-band signaling scheme. 제1비컨과 제2비컨에는 제1WP 송신기(300) 및 제2WP 송신기(400)의 식별정보(identity)가 포함되어 있다. The first beacon and a second beacon includes an identification (identity) of the 1WP transmitter 300 and the transmitter 2WP 400. 시간 분할에 의한 In-band signaling 방식이 이용되는 경우, 제1통신부(220)는 제1WP 송신기(300)로부터 제1비컨을 수신한 후, 제2WP 송신기(400)로부터 제2비컨을 수신할 수 있다. If the In-band signaling scheme according to the time division is used, the first communication unit 220 to receive the second beacon from, the 2WP transmitter 400, after receiving the first beacon from the 1WP transmitter 300 have. 다른 예로, 주파수 분할에 의한 In-band signaling 방식이 이용되는 경우, 서로 다른 주파수로 제1비컨과 제2비컨을 수신할 수 있다. As another example, if the In-band signaling scheme used by the frequency division, and to each other to receive the first beacon to the second beacon to a different frequency.

제1측정부(230)는 제1비컨의 수신 효율을 측정하며, 제2비컨의 수신 효율을 측정한다. The first measuring unit 230 measures the reception efficiency of the first beacon and measures the reception efficiency of the second beacon. 이하에서는, '제1비컨의 수신 효율'을 '제1수신 효율'이라 하며, '제2비컨의 수신 효율'을 '제2수신 효율'이라 한다. In the following, referred to as the "receiving a first beacon efficiency" "The first receiving efficiency", and is referred to as the "reception of the second beacon efficiency" "The second receiving efficiency.

제1제어부(240)는 무선 전력을 전송하는 복수 개의 WP 송신기들을 인지하고, 인지된 복수 개의 WP 송신기들 중 제1WP 수신기(200)에게 무선 전력을 전송할 WP 송신기를 하나 이상 선택할 수 있다. The first control unit 240 may select a plurality of WP and that the transmitter for transmitting wireless power, from among the plurality of transmitters that the WP transmit wireless power to claim 1WP receiver 200 at least one transmitter WP. 그리고, 제1제어부(240)는 WP 송신기를 두 개 이상 선택하고, 선택된 두 개 이상의 WP 송신기로부터 무선 전력을 수신하도록 제1수신부(250)를 제어할 수 있다. Then, the first controller 240 may control the first receiving section 250 select the transmitter WP is more than one, and to receive wireless power from the WP more than one transmitter is selected.

자세히 설명하면, 제1제어부(240)는 제1측정부(230)에서 측정되는 제1수신 효율과 제2수신 효율을 주기적으로 확인할 수 있다. In more detail, the first controller 240 may determine the first and second receiving efficiency receiving efficiency as measured in the first measuring section 230 periodically.

그리고, 제1제어부(240)는 제1접속 요청 메시지(ARM: Association Request Message)을 생성한다. The first controller 240 includes a first connection request message generates (ARM Association Request Message). 제1ARM은 제1WP 송신기(300)와 제1WP 수신기(200) 간의 매칭(matching)을 위한 메시지로서, 측정된 제1수신 효율, 제1WP 수신기(200)가 제1무선 전력을 수신하기 위한 주기 정보 및 무선 전력의 용량 정보 중 적어도 하나를 포함할 수 있다. The 1ARM is the 1WP transmitter 300 and the second as a message for matching (matching) between 1WP receiver 200, the measured first receiving efficiency, the 1WP receiver 200 period for receiving a first wireless power information and it may include at least one of capability information of the wireless power. 무선 전력의 용량 정보는 제1WP 수신기(200)가 필요로 하는 전체 무선 전력의 용량 중 제1WP 송신기(300)가 제공할 용량을 나타낼 수 있다. Capability information of the wireless power may indicate the amount to be provided with a 1WP transmitter 300 of the radio capacity of the entire power required by the 1WP receiver 200. 또는, 무선 전력의 용량 정보는 제1WP 수신기(200)가 필요로 하는 무선 전력의 전체 용량을 나타낼 수 있다. Alternatively, the capability information of the wireless power may indicate the total capacity of the wireless power required by the 1WP receiver 200.

또한, 제1제어부(240)는 제2ARM을 생성한다. In addition, the first controller 240 generates a first 2ARM. 제2ARM은 제2WP 송신기(400)와 제1WP 수신기(200) 간의 매칭을 위한 메시지로서, 측정된 제2수신 효율, 제1WP 수신기(200)가 제2무선 전력을 수신하기 위한 주기 정보 및 무선 전력의 용량 정보 중 적어도 하나를 포함할 수 있다. The 2ARM is the 2WP transmitter 400 and a message for the matching between the 1WP receiver 200, the measured second receiving efficiency, the cycle information and the wireless power for receiving a second wireless power 1WP receiver 200 of the capability information may include at least one. 또한, 제1ARM 및 제2ARM은 테스트 송전을 위한 무선 전력의 전송을 요청할 수 있다. Further, the 1ARM and the 2ARM may request the transmission of the wireless power transmission for the test.

제1제어부(240)는 제1ARM을 제1WP 송신기(300)에게 전송하고, 제2ARM을 제2WP 송신기(400)에게 전송하도록 제1통신부(220)를 제어할 수 있다. The first controller 240 may control the first communication unit 220 to transmit the transmission, and the 2ARM to claim 1ARM to claim 1WP transmitter 300 to the transmitter 2WP 400.

제1WP 송신기(300)는 수신되는 제1ARM에 포함된 정보를 이용하여 제1WP 수신기(200)와의 매칭을 수행하고, 테스트를 위한 제1무선 전력을 제1WP 수신기(200)에게 전송한다. The 1WP transmitter 300 using the information contained in the received 1ARM perform matching with the 1WP receiver 200, and transmitting a first wireless power for a test to claim 1WP receiver 200. 매칭 과정은 예를 들어, 주기 정보에 맞춰 무선 전력을 전송하기 위하여 무선 전력의 전송 주기를 조정하는 과정을 포함할 수 있다. Matching process, for example, may include the step of adjusting the transmission period of the wireless power transmission to the wireless power according to the period information.

제2WP 송신기(400)는 수신되는 제2ARM에 포함된 정보를 이용하여 제1WP 수신기(200)와의 매칭을 수행하고, 테스트를 위한 제2무선 전력을 제1WP 수신기(200)에게 전송한다. The 2WP transmitter 400 using the information contained in the received 2ARM perform matching with the 1WP receiver 200, and transmitting a second wireless power for a test to claim 1WP receiver 200.

제1수신부(250)는 제1WP 송신기(300)로부터 테스트를 위한 제1무선 전력을 수신하고, 제2WP 송신기(400)로부터 테스트를 위한 제2무선 전력을 수신할 수 있다. A first receiving unit 250 may receive a second wireless power for a test from the first transmitter 1WP receiving wireless power, the 2WP transmitter 400 for the test from 300. 제1무선 전력 및 제2무선 전력의 수신을 위하여, 제1수신부(250)는 제1공진 주파수와 제2공진 주파수를 기형성해 둘 수 있다. The first to the wireless power and the reception power of the second radio, a first receiving unit 250 may be left group to form a first resonant frequency and the second resonant frequency. 제1공진 주파수 및 제2공진 주파수는 각각 제1무선 전력과 제2무선 전력을 수신하는데 필요한 주파수이다. The first resonant frequency and the second resonant frequency is the frequency required for receiving a first wireless power and the second wireless power respectively. 제1수신부(250)는 하나 이상의 공진기로 구현될 수 있다. A first receiving unit 250 may be implemented in one or more resonator.

제2측정부(260)는 수신되는 테스트를 위한 제1무선 전력의 전송 효율과 테스트를 위한 제2무선 전력의 전송 효율을 측정할 수 있다. A second measurement unit 260 may measure the transmission efficiency of the second wireless power transmission efficiency for the test of the first wireless power for a test to be received. 전송 효율은 수신 효율을 의미할 수 있다. Transmission efficiency can mean the receiving efficiency.

제1제어부(240)는 테스트 결과를 기반으로 무선 전력을 수신할 WP 송신기를 선택할 수 있다. The first control unit 240 may select a WP transmitter to receive wireless power based on the test results. 예를 들어, 제1제어부(240)는 제2측정부(260)에서 측정된 테스트를 위한 제1무선 전력의 전송 효율이 기준값보다 작으면, 제1WP 송신기(300)를 배제할 수 있다. For example, the first controller 240 includes a second if the first transmission efficiency of the wireless power for a test measurement at the measuring unit 260 is less than the reference value, it is possible to exclude the first 1WP transmitter 300. 반면, 제1무선 전력의 전송 효율이 기준값보다 크면, 제1제어부(240)는 제1WP 송신기(300)는 무선 전력 송신에 적합한 것으로 판단하고 제1WP 송신기(300)를 선택할 수 있다. On the other hand, the transmission efficiency of the first wireless power is greater than the reference value, the first controller 240 1WP the transmitter 300 may be determined and to be suitable for the wireless power transmission to select the 1WP transmitter 300.

이는 제2WP 송신기(400)에 대해서도 동일하다. This also applies to a transmitter 2WP 400. 즉, 테스트를 위한 제2무선 전력의 전송 효율이 기준값보다 크면, 제1제어부(240)는 제2WP 송신기(400)는 무선 전력 송신에 적합한 것으로 판단하고 제2WP 송신기(400)를 선택할 수 있다. That is, the second transmission efficiency of the wireless power for the test is greater than the reference value, the first controller 240 is the 2WP transmitter 400 may be is determined to be suitable for the wireless power transmission to select the 2WP transmitter 400. 제1제어부(240)는 제1WP 수신기(200)가 원하는 무선 전력을 수신하는데 충분한 개수의 WP 송신기를 선택할 수 있다. The first control unit 240 may select a sufficient number of WP transmitter for receiving wireless power of claim 1WP the receiver 200 wants.

테스트 결과, 제1WP 송신기(300) 및 제2WP 송신기(400) 모두 무선 전력의 송신에 적합한 것으로 판단되면, 제1제어부(240)는 테스트 결과, 측정된 전송 효율, 상술한 주기 정보 및 필요한 무선 전력의 용량을 보고하는 보고서를 작성한다. Test results, when the 1WP transmitter 300 and the expected 2WP transmitter 400 both suitable for transmission of wireless power, the first controller 240 includes a test result, the measured transmission efficiency, the above-mentioned period information and required radio power the capacity to create reports that report. 그리고, 제1제어부(240)는 제1WP 송신기(300) 및 제2WP 송신기(400)에게 보고서를 전송하도록 제1통신부(220)를 제어한다. The first controller 240 controls the first communication unit 220 to transmit the report to the 1WP transmitter 300 and the transmitter 2WP 400.

제1WP 송신기(300) 및 제2WP 송신기(400)는 보고서를 기반으로 제1WP 수신기(200)와의 매칭을 수행한다. The 1WP transmitter 300 and the 2WP transmitter 400 based on the report, performing matching with the 1WP receiver 200. 그리고, 제1WP 송신기(300) 및 제2WP 송신기(400)는 각각 제1무선 전력 및 제2무선 전력을 전송 주기에 맞춰 제1수신부(250)에게 전송한다. And, the 1WP transmitter 300 and the 2WP transmitter 400 transmits a first receiver 250 according to the transmission period of the first wireless power and a second wireless power respectively.

제1충전부(270)는 제1수신부(250)에 의해 수신되는 제1무선 전력과 제2무선 전력을 정류한다. First charging section 270 rectifies the second wireless power and the first radio power received by the first receiving unit 250. The 제1충전부(270)는 정류된 제1무선 전력 및 제2무선 전력을 이용하여 충전을 시작한다. First charging section 270 to start charging by the rectified first wireless power and a second wireless power. 제1충전부(270)는 주지된 배터리일 수 있다. First charging section 270 may not be a battery.

도 4는 무선 전력 송수신을 위한 시스템의 다른 예를 도시한 도면이다. 4 is a view showing another example of a system for wireless power transmission.

도 4를 참조하면, 무선 전력 송수신을 위한 시스템은 제2WP 수신기(500), 제3WP 송신기(600), 제4WP 송신기(700) 및 네트워크(800)를 포함한다. 4, a system for wireless power transmission includes a first 2WP receiver 500, the 3WP transmitter 600, the 4WP transmitter 700 and a network 800. The

제2WP 수신기(500), 제3WP 송신기(600) 및 제4WP 송신기(700)는 도 1을 참조하여 설명한 무선 전력 전송 시스템에서 사용될 수 있다. The 2WP receiver 500, the 3WP transmitter 600 and the 4WP transmitter 700 may be used in the wireless power transmission system described with reference to FIG. 제2WP 수신기(500)는 무선 전력 충전이 가능한 통신 장치일 수 있다. The 2WP receiver 500 may be a communications device capable of wireless power charging. 따라서, 제2WP 수신기(500)는 유무선 통신에 필요한 모듈을 포함할 수 있다. Thus, the 2WP receiver 500 may include a module necessary for wired and wireless communications.

제3WP 송신기(600)는 도 1의 무선 전력 송신 기술을 이용하여 제3공진 주파수를 통해 제3무선 전력을 발생시킨다. The 3WP transmitter 600 generates a third wireless power through a third resonant frequency by using the wireless power transmission techniques of FIG. 제3커버리지(C3)는 제2WP 수신기(500)가 제3무선 전력을 수신할 수 있는 영역이다. Third coverage (C3) is a region in which the first 2WP receiver 500 can receive a third wireless power.

제4WP 송신기(700)는 도 1의 무선 전력 송신 기술을 이용하여 제4공진 주파수를 통해 제4무선 전력을 발생시킨다. The 4WP transmitter 700 to generate a fourth radio power through a fourth resonance frequency by using a wireless power transmission techniques of FIG. 제4커버리지(C4)는 제2WP 수신기(500)가 제4무선 전력을 수신할 수 있는 영역이다. A fourth coverage (C4) is a region in which the first 2WP receiver 500 may receive a fourth wireless power.

네트워크(800)는 제2WP 수신기(500)가 통신시 사용하는 통신망이다. Network 800 is a communications network for use during the first 2WP receiver 500 communicate. 제2WP 수신기(500)는 네트워크(800)를 이용하여 복수 개의 WP 송신기들과 제2WP 수신기(500) 간의 거리를 측정할 수 있다. The 2WP receiver 500 may measure a distance between a plurality of transmitters and the WP 2WP receiver 500 using the network 800. The 제2WP 수신기(500)는 측정된 각 거리를 기반으로, 제2WP 수신기(500)에게 무선 전력을 전송할 WP 송신기를 하나 이상 선택할 수 있다. The 2WP receiver 500 may select one or more of the WP transmitter to send based on the distances measured, to the wireless power 2WP receiver 500.

한편, 도 4에 도시된 바와 같이, 제2WP 수신기(500)는 제3커버리지(C3)와 제4커버리지(C4)의 중첩 영역에 위치할 수 있다. On the other hand, as described, the 2WP receiver 500 shown in Figure 4 may be located in the overlapping area of ​​coverage of the third (C3) and the fourth coverage (C4). 이러한 경우, 제2WP 수신기(500)는 제3WP 송신기(600) 및 제4WP 송신기(700)로부터 제1무선 전력과 제2무선 전력을 동시에 수신할 수 있다. In this case, the 2WP receiver 500 may receive the first and second wireless power from the wireless power 3WP transmitter 600 and the 4WP transmitter 700 at the same time. 제2WP 수신기(500)는 동시에 3개 이상의 WP 송신기로부터 무선 전력을 제공받을 수 있으나, 이하에서는 제3WP 송신기(600) 및 제4WP 송신기(700)를 예로 들어 설명한다. The 2WP receiver 500, but may be at the same time providing wireless power from the WP three or more transmitters, the following description, for the 3WP transmitter 600 and the 4WP transmitter 700 as an example.

도 5는 도 4에 도시된 제2WP 수신기의 일 예를 도시한 블록도이다. 5 is a block diagram illustrating an example of the first 2WP receiver shown in Fig.

도 5를 참조하면, 제2WP 수신기(500)는 제2기능 블록(510), 제2통신부(520), 제3측정부(530), 제2제어부(540), 제2수신부(550), 제4측정부(560) 및 제2충전부(570)를 포함할 수 있다. 5, the first 2WP receiver 500 is a second functional block 510, the second communication unit 520, a third measurement unit 530, a second controller 540, a second receiver 550, 4 may include a measurement unit 560 and the second charging section 570.

제2기능 블록(510)은 제2WP 수신기(500)의 고유 기능을 수행할 수 있다. A second functional block 510 may perform a unique function of the 2WP receiver 500.

제2WP 수신기(500)가 전용 통신기기(Dedicated Communication Device)인 경우, 제2통신부(520)는 제2WP 수신기(500)에서 지원하는 통신 방식을 이용하여 통신할 수 있다. If the 2WP receiver 500 which is a dedicated communication device (Dedicated Communication Device), the second communication unit 520 may communicate using a communication method supported by the 2WP receiver 500. 예를 들어, 제2통신부(520)가 WiFi(Wireless Fidelity)를 지원하는 경우, 제2통신부(520)는 WiFi 방식에 따라 네트워크(800)와 통신할 수 있다. For example, If the second communication unit 520 supports a WiFi (Wireless Fidelity), the second communication unit 520 may communicate with network 800, in accordance with the WiFi system.

또한, 제3WP 송신기(600), 제4WP 송신기(700) 및 제2WP 수신기(500)에 WiFi 또는 블루투스(Bluetooth)를 지원하는 모듈이 구비된 경우, 제2WP 수신기(500)는 WiFi의 비컨 또는 블루투스의 비컨을 제3WP 송신기(600) 및 제4WP 송신기(700)로부터 수신할 수 있다. Further, the 3WP transmitter 600, the 4WP transmitter 700 and the 2WP If the receiver 500 is equipped with a WiFi or modules supporting Bluetooth (Bluetooth), the 2WP receiver 500 a beacon or Bluetooth WiFi the beacon can be received from the 3WP transmitter 600 and the transmitter 4WP 700.

제3측정부(530)는 GPS(Global Positioning System) 또는 WiFi(Wireless Fidelity) 측위 기법 중 적어도 하나를 이용하여, 제2WP 수신기(500)의 주변에 위치하는 WP 송신기들과의 거리를 측정할 수 있다. A third measuring section (530) using at least one of the positioning method (Global Positioning System), or WiFi (Wireless Fidelity) GPS, the 2WP to measure the distance to the WP transmitter which is located in the vicinity of the receiver 500 have. 예를 들어, 제3측정부(530)는 제3WP 송신기(600) 및 제4WP 송신기(700)로부터 각각 수신되는 제3비컨 및 제4비컨을 기반으로, 제2WP 수신기(500)와 제3WP 송신기(600)의 거리, 제2WP 수신기(500)와 제4WP 송신기(700)의 거리를 측정할 수 있다. For example, the third measurement unit 530 comprises a 3WP transmitter 600 and the 4WP based on the third beacon and fourth beacons respectively received from the transmitter 700, the 2WP receiver 500 and the 3WP transmitter it is possible to measure the distance, the distance of the 2WP receiver 500 and the transmitter 4WP 700 of 600.

제2제어부(540)는 무선 전력을 전송하는 복수 개의 WP 송신기들을 인지하고, 인지된 복수 개의 WP 송신기들 중 제2WP 수신기(500)에게 무선 전력을 전송할 WP 송신기를 하나 이상 선택할 수 있다. The second control unit 540 may select a plurality of WP and that the transmitter for transmitting wireless power, from among the plurality of transmitters that the WP transmit wireless power to claim 2WP receiver 500 at least one transmitter WP. 그리고, 제2제어부(540)는 WP 송신기를 두 개 이상 선택하고, 선택된 두 개 이상의 WP 송신기로부터 무선 전력을 수신하도록 제2수신부(550)를 제어할 수 있다. The second control unit 540 may control the second receiver 550, the transmitter select WP is more than one, and to receive wireless power from the WP more than one transmitter is selected.

제2제어부(540)는 측정된 거리를 기반으로 제3ARM 및 제4ARM을 생성한다. The second control unit 540 produces a first and a 3ARM 4ARM based on the measured distance. 제3ARM은 제3WP 송신기(600)와 제2WP 수신기(500) 간의 매칭을 위한 메시지로서, 측정된 거리를 고려하여 생성된다. The 3ARM is generated, taking into account the measured distance as a message for the matching between the 3WP transmitter 600 and the receiver 2WP 500. 제3ARM은 측정된 거리, 제2WP 수신기(500)가 제3무선 전력을 수신하기 위한 주기 정보 및 무선 전력의 용량 정보 중 적어도 하나를 포함할 수 있다. The 3ARM is to include at least one of capability information of the wireless power cycle information and for receiving a third wireless power, the measured distance, the 2WP receiver 500.

또한, 제4ARM은 제4WP 송신기(700)와 제2WP 수신기(500) 간의 매칭을 위한 메시지로서, 제2WP 수신기(500)가 측정된 거리, 제4무선 전력을 수신하기 위한 주기 정보 및 무선 전력의 용량 정보 중 적어도 하나를 포함할 수 있다. Further, the 4ARM is the 4WP transmitter 700 and the second as a message for matching between 2WP receiver 500, the 2WP receiver 500 measures the distance, the period information and the wireless power for receiving a fourth wireless power of the capability information may include at least one. 또한, 제3ARM 및 제4ARM은 테스트 송전을 위한 제3무선 전력 및 제4무선 전력의 전송을 요청할 수 있다. Further, the 3ARM and the 4ARM may request the third and fourth wireless power transmission of the wireless power transmission for the test.

제2제어부(540)는 제3ARM을 제3WP 송신기(600)에게 전송하고, 제4ARM을 제4WP 송신기(700)에게 전송하도록 제2통신부(520)를 제어할 수 있다. The second control unit 540 may control the second communication unit 520 to transmit the transmission, and the 4ARM to claim 3ARM to claim 3WP transmitter 600 to the transmitter 4WP 700.

제3WP 송신기(600)는 수신되는 제3ARM에 포함된 정보를 이용하여 제2WP 수신기(500)와의 매칭을 수행하고, 테스트를 위한 제3무선 전력을 제2WP 수신기(500)에게 전송한다. The 3WP transmitter 600 using the information contained in the received 3ARM perform matching with the 2WP receiver 500, and transmitting a third wireless power for a test to claim 2WP receiver 500.

제4WP 송신기(700)는 수신되는 제4ARM에 포함된 정보를 이용하여 제2WP 수신기(500)와의 매칭을 수행하고, 테스트를 위한 제4무선 전력을 제2WP 수신기(500)에게 전송한다. The 4WP transmitter 700 using the information contained in the received 4ARM perform matching with the 2WP receiver 500 and transmits a fourth radio power for the test to claim 2WP receiver 500.

제2수신부(550)는 제3WP 송신기(600)로부터 테스트를 위한 제3무선 전력을 수신하고, 제4WP 송신기(700)로부터 테스트를 위한 제4무선 전력을 수신할 수 있다. A second receiving unit 550 may receive a fourth wireless power for a third receiving wireless power, test 4WP from the transmitter 700 for a test from the 3WP transmitter 600. 제2수신부(250)는 예를 들어, 하나 이상의 공진기로 구현될 수 있으며, 제1수신부(250)와 거의 동일하므로 상세한 설명은 생략한다. A second receiving unit 250 is, for example, be implemented in at least one resonator, and since the first substantially the same as the receiving unit 250, a detailed description thereof will be omitted.

제2측정부(260)는 테스트를 위한 제3무선 전력의 전송 효율과 테스트를 위한 제4무선 전력의 전송 효율을 측정할 수 있다. A second measurement unit 260 may measure the fourth transmission efficiency of the wireless power for a third transmission efficiency of the wireless power and test for testing.

제2제어부(540)는 테스트 결과를 기반으로 무선 전력을 수신할 WP 송신기를 선택할 수 있다. The second control unit 540 may select a WP transmitter to receive wireless power based on the test results. 제2제어부(540)는 제2WP 수신기(500)가 원하는 무선 전력을 수신하는데 충분한 개수의 WP 송신기를 선택할 수 있다. The second control unit 540 may select a sufficient number of WP transmitter for receiving wireless power of claim 2WP the receiver 500 wants.

테스트 결과, 제3WP 송신기(600) 및 제4WP 송신기(700) 모두 무선 전력의 송신에 적합한 것으로 판단되면, 제2제어부(540)는 테스트 결과, 측정된 전송 효율, 상술한 주기 정보 및 필요한 무선 전력의 용량을 보고하는 보고서를 작성한다. Test results, when the 3WP transmitter 600 and the 4WP transmitter 700, all determined to be suitable for transmission of wireless power, the second control unit 540 are the test results, the measured transmission efficiency, the above-mentioned period information and required radio power the capacity to create reports that report. 그리고, 제2제어부(540)는 제3WP 송신기(600) 및 제4WP 송신기(700)에게 보고서를 전송하도록 제2통신부(520)를 제어한다. The second control unit 540 controls the second communication unit 520 to transmit the report to the 3WP transmitter 600 and the transmitter 4WP 700.

제3WP 송신기(600) 및 제4WP 송신기(700)는 보고서를 기반으로 제2WP 수신기(500)와의 매칭을 수행한다. The 3WP transmitter 600 and the 4WP transmitter 700 based on the report, performing matching with the 2WP receiver 500. 그리고, 제3WP 송신기(600) 및 제4WP 송신기(700)는 각각 제3무선 전력 및 제4무선 전력을 전송 주기에 맞춰 제2수신부(550)에게 전송한다. And, the 3WP transmitter 600 and the 4WP transmitter 700 transmits to the second receiving unit 550 according to the transmission period of the third wireless power and a fourth wireless power respectively.

제2충전부(570)는 제2수신부(550)에 의해 수신되는 제3무선 전력과 제4무선 전력을 정류하고, 정류된 제3무선 전력 및 제4무선 전력을 이용하여 충전을 시작한다. Second charging section 570 to start charging by the third wireless power and the fourth rectifying the wireless power and wireless power rectifier third and fourth radio power received by the second receiver 550. The

도 6은 제1WP 수신기의 무선 전력 수신 방법의 일 예를 설명하기 위한 흐름도이다. 6 is a flow chart for explaining an example of a method of a wireless power receiving 1WP receiver.

도 6의 제1WP 수신기, 제1WP 송신기 및 제2WP 송신기는 도 2의 제1WP 수신기(200), 제1WP 송신기(300) 및 제2WP 송신기(400)일 수 있다. The 1WP receiver, a transmitter and a 1WP 2WP transmitter of Figure 6 may be the 1WP receiver 200, a 1WP transmitter 300 and the 2WP transmitter 400 of FIG.

605단계에서, 제1WP 수신기는 제1WP 송신기로부터 제1비컨을 수신한다. In step 605, the 1WP receiver receives the first beacon from the 1WP transmitter.

610단계에서, 제1WP 수신기는 수신된 제1비컨의 수신 효율을 측정한다. In step 610, the 1WP receiver measures the receiving efficiency of the received first beacons.

615단계에서, 제1WP 수신기는 제2WP 송신기로부터 제2비컨을 수신한다. In step 615, the 1WP receiver receives the second beacon from the 2WP transmitter.

620단계에서, 제1WP 수신기는 수신된 제2비컨의 수신 효율을 측정한다. In step 620, the 1WP receiver measures the receiving efficiency of the received second beacons.

625단계에서, 제1WP 수신기는 제1ARM 및 제2ARM을 생성한다. In step 625, the receiver generates a first 1WP 1ARM and the 2ARM. 제1ARM은 제1WP 송신기와 제1WP 수신기 간의 매칭을 위한 메시지이며, 제2ARM은 제2WP 송신기와 제1WP 수신기 간의 매칭을 위한 메시지이다. The 1ARM is a message for a match between the transmitter and the 1WP 1WP receiver, the 2ARM is a message for the matching between the transmitter and the 2WP 1WP receiver. 제1ARM 및 제2ARM은 테스트 송전을 요청하는 내용을 포함한다. The 1ARM and the 2ARM include the information for requesting a test transmission.

630단계에서, 제1WP 수신기는 제1ARM을 제1WP 송신기에게 전송한다. In step 630, the receiver sends a 1WP claim 1ARM to claim 1WP transmitter.

635단계에서, 제1WP 수신기는 제2ARM을 제2WP 송신기에게 전송한다. In step 635, the receiver sends a 1WP claim 2ARM to claim 2WP transmitter.

이에 의해, 제1WP 송신기는 제1ARM에 포함된 정보를 이용하여 제1WP 수신기와의 매칭을 수행하고, 테스트를 위한 제1무선 전력을 제1WP 수신기에게 전송한다. As a result, the 1WP transmitter performs the matching with the 1WP receiver using the information contained in the 1ARM, and transmitting a first wireless power for a test to claim 1WP receiver. 제2WP 송신기는 제2ARM에 포함된 정보를 이용하여 제1WP 수신기와의 매칭을 수행하고, 테스트를 위한 제2무선 전력을 제1WP 수신기에게 전송한다. The 2WP transmitter performs the matching with the 1WP receiver using the information contained in the 2ARM, and transmitting a second wireless power for a test to claim 1WP receiver.

640단계에서, 제1WP 수신기는 제1WP 송신기로부터 테스트를 위한 제1무선 전력을 수신한다. In step 640, the 1WP receiver receives a first wireless power for a test from the transmitter 1WP.

645단계에서, 제1WP 수신기는 제2WP 송신기로부터 테스트를 위한 제2무선 전력을 수신한다. In step 645, the 1WP receiver receives the second radio power for the test from the transmitter 2WP.

650단계에서, 제1WP 수신기는 테스트를 위한 제1무선 전력의 전송 효율을 측정한다. In step 650, the 1WP receiver measures the transmission efficiency of the first wireless power for a test.

655단계에서, 제1WP 수신기는 테스트를 위한 제2무선 전력의 전송 효율을 측정한다. In step 655, the 1WP receiver measures the transmission efficiency of the second wireless power for a test.

660단계에서, 제1WP 수신기는 650단계 및 655단계의 테스트 결과를 기반으로 무선 전력을 수신할 WP 송신기를 두 개 이상 선택할 수 있다. In step 660, the 1WP receiver is able to select more than one WP transmitter to receive wireless power based on the test result of step 650 and step 655. 예를 들어, 제1WP 수신기는 제1WP 수신기는 제1WP 송신기 및 제2WP 송신기를 모두 선택할 수 있다. For example, the receiver may claim 1WP 1WP receiver is able to select both the first and second transmitter 1WP 2WP transmitter.

665단계에서, 제1WP 수신기는 테스트 결과, 측정된 전송 효율, 상술한 주기 정보 및 필요한 무선 전력의 용량을 보고하는 보고서를 작성한다. In step 665, the 1WP receiver reports for reporting test results, and the measured transfer efficiency, the above-mentioned period information and the capacity of the wireless power required.

670단계 및 675단계에서, 제1WP 수신기는 작성된 보고서를 제1WP 송신기 및 제2WP 송신기에게 전송한다. In step 670 and step 675, the 1WP receiver transmits the generated report to the transmitter and the 1WP 2WP transmitter. 제1WP 송신기 및 제2WP 송신기는 보고서를 기반으로 제1WP 수신기와의 매칭을 수행한다. The transmitter and the 1WP 2WP transmitter is based on a report to perform the matching with the 1WP receiver.

680단계에서, 제1WP 수신기는 제1WP 송신기로부터 제1무선 전력을 수신한다. In step 680, the 1WP receiver receives the first radio power from the transmitter 1WP.

685단계에서, 제1WP 수신기는 제2WP 송신기로부터 제2무선 전력을 수신한다. In step 685, the 1WP receiver receives the second radio power from the transmitter 2WP.

690단계에서, 제1WP 수신기는 수신된 제1무선 전력 및 제2무선 전력을 이용하여 충전을 시작한다. In step 690, the receiver 1WP begin charging using the received first radio power and the second wireless power.

도 7은 제2WP 수신기의 무선 전력 수신 방법의 다른 예를 설명하기 위한 흐름도이다. 7 is a flow chart for explaining another example of the wireless power receiving method of claim 2WP receiver.

도 7의 제2WP 수신기, 제3WP 송신기 및 제4WP 송신기는 도 4의 제2WP 수신기(500), 제3WP 송신기(600) 및 제4WP 송신기(700)일 수 있다. The 2WP receiver, a transmitter and a 3WP 4WP transmitter of Figure 7 may be 2WP the receiver 500, the 3WP transmitter 600 and the 4WP transmitter 700 of FIG.

705단계에서, 제2WP 수신기는 제2WP 수신기와 제3WP 송신기의 거리, 제2WP 수신기와 제4WP 송신기의 거리를 측정한다. In step 705, the 2WP receiver measures the distance of the distance, the 2WP receiver and the transmitter of the 4WP 2WP receiver and the transmitter 3WP. 제2WP 수신기는 제3WP 송신기 및 제4WP 송신기로부터 전송되는 제3비컨 및 제4비컨을 기반으로 거리를 측정할 수 있다. The 2WP receiver may measure the distance based on the third and fourth beacon beacon transmitted from the transmitter and the 3WP 4WP transmitter. 제3비컨 및 제4비컨은 WiFi 네트워크를 통해 또는 블루투스와 같은 통신 방식을 통해 수신될 수 있다. Third and fourth beacon beacon can be received over a communication system, such as via a WiFi network or Bluetooth.

710단계에서, 제2WP 수신기는 측정된 거리를 기반으로, 무선 전력을 제공할 수 있는 WP 송신기들을 파악한다. In step 710, the receiver must identify 2WP WP transmitter capable of providing, based on the measured distance, the wireless power.

715단계에서, 제2WP 수신기는 제3ARM 및 제4ARM을 생성한다. In step 715, the receiver generates a first 2WP 3ARM and the 4ARM. 제3ARM은 제2WP 송신기와 제2WP 수신기 간의 매칭을 위한 메시지이며, 제4ARM은 제4WP 송신기와 제2WP 수신기 간의 매칭을 위한 메시지이다. The 3ARM is a message for a match between the transmitter and the 2WP 2WP receiver, the 4ARM is a message for the matching between the transmitter and the 4WP 2WP receiver. 제3ARM 및 제4ARM은 테스트 송전을 요청하는 내용을 포함한다. The 3ARM and the 4ARM include the information for requesting a test transmission.

720단계에서, 제2WP 수신기는 제3ARM을 제3WP 송신기에게 전송한다. In step 720, the receiver sends a 2WP claim 3ARM to claim 3WP transmitter.

725단계에서, 제2WP 수신기는 제4ARM을 제4WP 송신기에게 전송한다. In step 725, the receiver sends a 2WP claim 4ARM to claim 4WP transmitter.

제3WP 송신기는 제3ARM에 포함된 정보를 이용하여 제2WP 수신기와의 매칭을 수행하고, 테스트를 위한 제3무선 전력을 제2WP 수신기에게 전송한다. The 3WP transmitter performs the matching with the 2WP receiver using the information contained in the 3ARM, and transmitting a third wireless power for a test to claim 2WP receiver. 제4WP 송신기는 제4ARM에 포함된 정보를 이용하여 제2WP 수신기와의 매칭을 수행하고, 테스트를 위한 제4무선 전력을 제2WP 수신기에게 전송한다. The 4WP transmitter performs the matching with the 2WP receiver using the information contained in the 4ARM, and transmitting a fourth radio power for the test to claim 2WP receiver.

730단계에서, 제2WP 수신기는 제3WP 송신기로부터 테스트를 위한 제3무선 전력을 수신한다. In step 730, the 2WP receiver receives the third wireless power for a test from the transmitter 3WP.

735단계에서, 제2WP 수신기는 제4WP 송신기로부터 테스트를 위한 제4무선 전력을 수신한다. In step 735, the receiver receives the 2WP fourth wireless power for a test from the transmitter 4WP.

740단계에서, 제2WP 수신기는 테스트를 위한 제3무선 전력의 전송 효율을 측정하고, 테스트를 위한 제4무선 전력의 전송 효율을 측정한다. In step 740, the 2WP receiver measures the transmission efficiency of the wireless power of claim 3 for testing and measuring the transmission efficiency of the wireless power of claim 4 for testing.

745단계에서, 제2WP 수신기는 740단계 및 745단계의 테스트 결과를 기반으로 무선 전력을 수신할 WP 송신기를 하나 이상 선택할 수 있다. In step 745, the 2WP receiver may select one or more of the WP transmitter to receive wireless power based on the test result in step 740, and step 745. 예를 들어, 제2WP 수신기는 제3WP 송신기 및 제4WP 송신기를 모두 선택할 수 있다. For example, the 2WP receiver is able to select both the first and second transmitter 3WP 4WP transmitter.

750단계에서, 제2WP 수신기는 테스트 결과, 측정된 전송 효율, 상술한 주기 정보 및 필요한 무선 전력의 용량을 보고하는 보고서를 작성한다. In step 750, the 2WP receiver reports for reporting test results, and the measured transfer efficiency, the above-mentioned period information and the capacity of the wireless power required.

755단계 및 760단계에서, 제2WP 수신기는 작성된 보고서를 제3WP 송신기 및 제4WP 송신기에게 전송한다. In step 755 and step 760, the 2WP receiver transmits the generated report to the transmitter and the 3WP 4WP transmitter. 제3WP 송신기 및 제4WP 송신기는 보고서를 기반으로 제2WP 수신기와의 매칭을 수행한다. The transmitter and the 3WP 4WP transmitter is based on a report to perform the matching with the 2WP receiver.

765단계에서, 제2WP 수신기는 제3WP 송신기로부터 제3무선 전력을 수신한다. In step 765, the 2WP receiver receives a third power from the first wireless transmitter 3WP.

775단계에서, 제2WP 수신기는 제4WP 송신기로부터 제4무선 전력을 수신한다. In step 775, the receiver receives the 2WP fourth radio power from the transmitter 4WP.

780단계에서, 제2WP 수신기는 수신된 제3무선 전력 및 제4무선 전력을 이용하여 충전을 시작한다. In step 780, the receiver 2WP begin charging using the received third wireless power and a fourth wireless power.

한편, 본 발명의 실시 예에 따른 공진기는 헬릭스(helix) 코일 구조의 공진기, 또는 스파이럴(spiral) 코일 구조의 공진기, 또는 meta-structured 공진기로 구성될 수 있다. On the other hand, a resonator according to an embodiment of the present invention may be of a helix (helix) of the resonator coil structure or a spiral (spiral) of the resonator coil structure, or meta-structured resonator. 공진기는 무선 전력의 송신 및 수신에 사용될 수 있다. Resonator may be used for transmission and reception of wireless power.

도 8은 본 발명의 일 실시예에 따른 meta-structured 공진기를 나타낸 도면이다. Figure 8 is a view of the meta-structured resonator according to one embodiment of the present invention.

도 8을 참조하면, meta-structured 공진기는 전송 선로(810) 및 커패시터(820)를 포함한다. Referring to Figure 8, the meta-structured resonator comprises transmission line 810 and capacitor 820. 여기서 커패시터(820)는 전송 선로(810)의 특정 위치에 직렬로 삽입되고, 전계(electric field)는 커패시터에 갇히게 된다. The capacitor 820 is inserted in series with the specific position of the transmission line 810, the electric field (electric field) is trapped in a capacitor.

또한, 도 8에 도시된 바와 같이 meta-structured 공진기는 3차원 구조의 형태를 갖는다. In addition, the meta-structured resonator as shown in Figure 8 has the form of a three-dimensional structure. 도 8에 도시된 것과 달리 공진기는 전송 선로가 x, z평면에 배치된 2차원 구조로의 구현될 수 있다. In contrast to that shown in Figure 8 the resonator is a transmission line may be implemented in a two-dimensional structure disposed in the x, z plane.

커패시터(820)는 집중 소자(lumped element 및 분산 소자(distributed element), 예를 들어 interdigital 커패시터나 높은 유전율을 갖는 기판을 가운데다 둔 gap 커패시터 등의 형태로 전송 선로(810)에 삽입된다. 커패시터(820)가 전송 선로(810)에 삽입됨에 따라 상기 공진기는 메타물질(metamaterial)의 특성을 가질 수 있다. Capacitor 820 is inserted into the focusing element (lumped element and the distributed element (distributed element), for example, interdigital capacitors, or the transmission line 810 in the form of a gap capacitor put the center of the substrate having a high dielectric constant capacitor ( as 820) is inserted in the transmission line 810, the resonator may have the characteristics of a meta-material (metamaterial).

여기서, 메타물질이란 자연에서 발견될 수 없는 특별한 전기적 성질을 갖는 물질로서, 인공적으로 설계된 구조를 갖는다. Here, the meta-material is a substance having a specific electrical properties which can not be found in nature, has a structure designed artificially. 자연계에 존재하는 모든 물질들의 전자기 특성은 고유의 유전율 또는 투자율을 가지며, 대부분의 물질들은 양의 유전율 및 양의 투자율을 갖는다. Electromagnetic properties of all materials present in the natural world has a specific dielectric constant or permeability of most of the materials have a positive dielectric and the amount of permeability. 대부분의 물질들에서 전계, 자계 및 포인팅 벡터에는 오른손 법칙이 적용되므로, 이러한 물질들을 RHM(Right Handed Material)이라고 한다. The electric field in most of the material, and the magnetic field vector is pointing Since the right-hand rule applies, referred to these materials RHM (Right Handed Material). 그러나, 메타물질은 1보다 작은 유전율 또는 투자율을 가진 물질로서, 유전율 또는 투자율의 부호에 따라 ENG(epsilon negative) 물질, MNG(mu negative) 물질, DNG(double negative) 물질, NRI(negative refractive index) 물질, LH(left-handed) 물질 등으로 분류된다. However, the meta-material is a material having a small dielectric constant or a magnetic permeability greater than 1, the dielectric constant or depending on the sign of the magnetic permeability ENG (epsilon negative) material, MNG (mu negative) material, DNG (double negative) material, (negative refractive index) NRI materials, are classified into such as LH (left-handed) material.

이 때, 집중 소자로서 삽입된 커패시터의 커패시턴스가 적절히 정해지는 경우, 상기 공진기는 메타물질의 특성을 가질 수 있다. At this time, if the capacitance of the capacitor element to be inserted as a concentrated appropriately determined, the resonator may have the characteristics of the metamaterial. 특히, 커패시터의 커패시턴스를 적절히 조절함으로써, 공진기는 음의 투자율을 가질 수 있으므로, 본 발명의 일실시예에 따른 공진기는 MNG 공진기로 불려질 수 있다. In particular, by appropriately adjusting the capacitance of the capacitor, the resonator can have a magnetic permeability of the sound, the resonator in accordance with one embodiment of the present invention may be referred to as a MNG resonator.

상기 MNG 공진기는 전파 상수(propagation constant)가 0일 때의 주파수를 공진 주파수로 갖는 영번째 공진(Zeroth-Order Resonance) 특성을 가질 수 있다. The MNG resonator may have a zero-th resonator (Zeroth Order-Resonance) characteristic having a frequency of when the propagation constant (propagation constant) 0 to the resonant frequency. MNG 공진기는 영번째 공진 특성을 가질 수 있으므로, 공진 주파수는 MNG 공진기의 물리적인 사이즈에 대해 독립적일 수 있다. MNG resonator can have a zero-th resonance characteristic, the resonant frequency may be independent of the physical size of the MNG resonator. 즉, 아래에서 다시 설명하겠지만, MNG 공진기에서 공진 주파수를 변경하기 위해서는 커패시터를 적절히 설계하는 것으로 충분하므로, MNG 공진기의 물리적인 사이즈를 변경하지 않을 수 있다. That is, as will be described again below, in order to change the resonance frequency in the MNG resonator, so it is sufficient to appropriately design the capacitor, it may not change the physical size of the MNG resonator.

또한, 근접 필드(near field)에서 전계는 전송 선로(810)에 삽입된 직렬 커패시터(820)에 집중되므로, 직렬 커패시터(820)로 인하여 근접 필드에서는 자계(magnetic field)가 도미넌트(dominant)해진다. In addition, the electric field in the near field (near field) is therefore concentrated in a series capacitor (820) inserted in the transmission line 810, in due to the series capacitor 820, the near field becomes dominant (dominant), a magnetic field (magnetic field).

또한, MNG 공진기는 집중 소자로의 커패시터(820)을 이용하여 높은 큐-팩터(Q-Factor)를 가질 수 있으므로, 전력 전송의 효율을 향상시킬 수 있다. Also, MNG resonator is high queue using the capacitor 820 to the focusing device - can may have a Factor (Q-Factor), improving the efficiency of power transfer.

또한, MNG 공진기는 임피던스 매칭을 위한 매칭기(830)를 포함할 수 있다. Also, MNG resonator may comprise a matching unit 830 for impedance matching. 이 때, 매칭기(830)는 MNG 공진기와의 결합을 위해 자계의 강도를 적절히 조절 가능(tunable)하고, 매칭기(830)에 의해 MNG 공진기의 임피던스는 조절된다. At this time, the matching unit 830 is impedance of the MNG resonator by adjusting the intensity of the magnetic field can be properly (tunable), the matching unit 830 for coupling with the MNG resonator is adjusted. 그리고, 전류는 커넥터(840)를 통하여 MNG 공진기로 유입되거나 MNG 공진기로부터 유출된다. Then, the current is flowing into or flowing out of the MNG MNG resonator cavity through the connector 840.

또한, 도 8에 명시적으로 도시되지 아니하였으나, MNG 공진기를 관통하는 마그네틱 코어가 더 포함될 수 있다. Further, although not shown in FIG explicitly to 8, a magnetic core penetrating through the MNG resonator may further be included. 이러한 마그네틱 코어는 전력 전송 거리를 증가시키는 기능을 수행할 수 있다. The magnetic core may perform the function of increasing the power transmission distance.

본 발명의 MNG 공진기가 갖는 특성들에 대해서는 아래에서 자세히 설명한다. For the characteristics of the MNG resonator according to the present invention will be described in detail below.

도 9은 도 8에 도시된 공진기의 등가 회로를 나타낸 도면이다. Figure 9 is a view showing the equivalent circuit of the resonator shown in Fig.

도 8에 도시된 공진기는 도 9에 도시된 등가 회로로 모델링될 수 있다. The resonator shown in Figure 8 can be modeled by the equivalent circuit shown in Fig. 도 9의 등가 회로에서 C L 은 도 8의 전송 선로의 중단부에 집중 소자의 형태로 삽입된 커패시터를 나타낸다. In the equivalent circuit shown in Fig. 9 C L denotes a capacitor inserted in the form of a lumped element in the interrupted portion of the transmission line of FIG.

이 때, 도 8에 도시된 무선 전력 전송을 위한 공진기는 영번째 공진 특성을 갖는다. At this time, the cavity for the wireless power transmission shown in Figure 8 has a zero-th resonance characteristics. 즉, 전파 상수가 0인 경우, 무선 전력 전송을 위한 공진기는 That is, when the propagation constant is zero, the cavity for wireless power transmission,

Figure pat00004
를 공진 주파수로 갖는다고 가정한다. It is assumed that a has a resonance frequency. 이 때, 공진 주파수 At this time, the resonant frequency
Figure pat00005
는 하기 수학식 2와 같이 표현될 수 있다. Can be expressed by Equation (2). 여기서, MZR은 Mu Zero Resonator를 의미한다. Here, MZR means a Mu Zero Resonator.

Figure pat00006

상기 수학식 2를 참조하면, 공진기의 공진 주파수 Referring to Equation (2), the resonance frequency of the resonator

Figure pat00007
It is
Figure pat00008
에 의해 결정될 수 있고, 공진 주파수 To be determined by and, the resonant frequency
Figure pat00009
와 공진기의 물리적인 사이즈는 서로 독립적일 수 있음을 알 수 있다. The physical size of the resonator can be understood be independent of one another. 따라서, 공진 주파수 Thus, the resonant frequency
Figure pat00010
와 공진기의 물리적인 사이즈가 서로 독립적이므로, 공진기의 물리적인 사이즈는 충분히 작아질 수 있다. Since the physical size of the resonator is independently of each other, the physical size of the resonator can be sufficiently small.

도 10은 본 발명의 다른 일 실시예에 따른 meta-structured 공진기를 나타낸 도면이다. Figure 10 is a view showing the meta-structured resonator according to another embodiment of the present invention.

도 10을 참조하면, meta-structured 공진기는 전송선로부(1010) 및 커패시터(1020)를 포함한다. 10, and meta-structured resonator comprises part 1010 and the capacitor 1020, the transmission line. 또한, 본 발명의 일 실시 예에 따른 공진기는, 피딩부(1030)를 더 포함하여 구성될 수 있다. In addition, the resonator in accordance with one embodiment of the present invention can be configured by further comprising a feeding section 1030.

전송선로부(1010)는 복수의 전송 선로 쉬트(Sheet)가 병렬로 배치된다. A transmission line unit 1010 has a plurality of transmission lines sheet (Sheet) are arranged in parallel. 복수의 전송 선로 쉬트가 병렬로 배치되는 구성은, 도 11을 통하여 보다 상세하기 설명하기로 한다. Configured of a plurality of transmission lines sheets disposed in parallel, to be described in more detail through FIG.

커패시터(1020)는, 전송선로부(1010)의 특정 위치에 삽입된다. Capacitor 1020 is inserted at a specific location in the portion 1010, the transmission line. 이때, 커패시터(1020)는 전송선로부(1010)의 중단에 직렬로 삽입될 수 있다. At this time, the capacitor 1020 may be inserted in series with the interrupting portion 1010, the transmission line. 이때, 공진기에 생성되는 전계(electric field)는 커패시터(1020)에 갇히게 된다. At this time, the electric field (electric field) that is generated in the resonator are confined to the capacitor 1020. The

커패시터(1020)는 집중 소자(lumped element 및 분산 소자(distributed element), 예를 들어 interdigital 커패시터나 높은 유전율을 갖는 기판을 가운데다 둔 gap 커패시터 등의 형태로 전송 선로부(1010)에 삽입될 수 있다. 커패시터(1020)가 전송 선로부(1010)에 삽입됨에 따라, 공진기는 메타물질(metamaterial)의 특성을 가질 수 있다. Capacitor 1020 may be inserted into the focusing element (lumped element and the distributed element (distributed element), for example, interdigital capacitors, or the transmission line unit 1010 in the form of a gap capacitor put the center of the substrate having a high dielectric constant . as the capacitor 1020 is inserted in the transmission line unit 1010, the cavity can have the characteristics of the meta-material (metamaterial).

피딩부(1030)는 MNG 공진기에 전류를 공급(feeding)하는 기능을 수행할 수 있다. Feeding section 1030 may perform the function of supplying (feeding) a current to the MNG resonator. 이때, 피딩부(1030)는, 공진기로 공급되는 전류를 복수의 전송 선로 쉬트로 균등하게 분배되도록 설계될 수 있다. At this time, the feeding section 1030 is, may be designed to evenly distribute the current supplied to the transmission line resonator into a plurality of sheets.

도 11은 도 10의 커패시터(1020)의 삽입 위치를 상세하게 나타내는 도면이다. 11 is a view specifically showing an inserting position of the capacitor 1020 in Fig. 10.

도 11을 참조하면, 커패시터(1020)는 전송선로부(1010)의 중단부에 삽입된다. 11, the capacitor 1020 is inserted into the stop portion of the section 1010 to the transmission line. 이때, 전송선로부(1010)의 중단부는 커패시터(1020)가 삽입될 수 있도록 오픈(open)된 형태일 수 있으며, 각각의 전송 선로 쉬트들(1010-1, 1010-2, 1010-n)은 중단부에서 서로 병렬 연결된 형태로 구성될 수 있다. In this case, the stop portion capacitor 1020 may be open (open) so that it can be inserted configuration, each of the transmission lines sheets (1010-1, 1010-2, 1010-n) of the unit 1010 to the transmission line It may be configured in the form of interrupted portions connected in parallel with each other.

본 발명의 실시 예에 따른 방법들은 다양한 컴퓨터 수단을 통하여 수행될 수 있는 프로그램 명령 형태로 구현되어 컴퓨터 판독 가능 매체에 기록될 수 있다. Method according to an embodiment of the present invention is implemented in program instruction form that can be executed by various computer means may be recorded in computer-readable media. 상기 컴퓨터 판독 가능 매체는 프로그램 명령, 데이터 파일, 데이터 구조 등을 단독으로 또는 조합하여 포함할 수 있다. The media may also include, alone or in combination with the program instructions, data files, data structures, and the like. 상기 매체에 기록되는 프로그램 명령은 본 발명을 위하여 특별히 설계되고 구성된 것들이거나 컴퓨터 소프트웨어 당업자에게 공지되어 사용 가능한 것일 수도 있다. The media and program instructions may be ones, or they may be of well-known and available to those skilled in the art computer software specifically designed and constructed for the purposes of the present invention.

이상과 같이 본 발명은 비록 한정된 실시예와 도면에 의해 설명되었으나, 본 발명은 상기의 실시예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다. The present invention as described above, although been described and specific examples, the invention is not limited to the embodiments described above, those skilled in the art to which the invention pertains many modifications and variations to the described this is possible.

그러므로, 본 발명의 범위는 설명된 실시예에 국한되어 정해져서는 아니 되며, 후술하는 특허청구범위뿐 아니라 이 특허청구범위와 균등한 것들에 의해 정해져야 한다. Therefore, the scope of the invention limited to the described embodiments will not be jeonghaejyeoseo, it should be below the claims of which is defined by the claims and their equivalents.

200: 제1WP 수신기 210: 제1기능 블록 200: The receiver 210 1WP: a first functional block
220: 제1통신부 230: 제1측정부 220: a first communication section 230: a first measurement unit
240: 제1제어부 250: 제1수신부 240: first control 250: first receiving
260: 제2측정부 270: 제1충전부 260: a second measurement unit 270: first charging section

Claims (16)

  1. 수신기의 무선 전력 수신 방법에 있어서, In the wireless power receiving method of a receiver,
    무선 전력을 전송하는 복수 개의 송신기들을 인지하는 단계; Further comprising: if a plurality of transmitters for transmitting the wireless power;
    상기 복수 개의 송신기들 중 상기 수신기에게 상기 무선 전력을 전송할 두 개 이상의 송신기를 선택하는 단계; Selecting more than one transmitter to the receiver of the plurality of transmitters transmitting the wireless power; And
    상기 선택된 두 개 이상의 송신기로부터 상기 무선 전력을 수신하는 단계 Receiving the wireless power from the selected more than one transmitter
    를 포함하는 수신기의 무선 전력 수신 방법. Wireless power receiving method of a receiver including a.
  2. 제1항에 있어서, According to claim 1,
    상기 인지하는 단계는, Further comprising: if the is,
    시분할 또는 주파수 분할에 의한 인 밴드 시그널링(In-band signaling) 방식을 이용하는, 수신기의 무선 전력 수신 방법. Using in-band signaling (In-band signaling) scheme by a time division or frequency division, the wireless power receiving method of a receiver.
  3. 제2항에 있어서, 3. The method of claim 2,
    상기 선택하는 단계는, Wherein the selection is
    상기 복수 개의 송신기들로부터 전송되는 신호들 각각의 수신 효율을 측정하는 단계; The method comprising the measurement of each of the receiving efficiency of the signal transmitted from the plurality of transmitters;
    상기 측정된 수신 효율을 포함하는 접속(Association) 요청 메시지를 상기 복수 개의 송신기들에게 전송하는 단계; Sending a connection (Association) request message including the measured reception efficiency for the plurality of transmitters;
    상기 복수 개의 송신기들로부터 테스트를 위한 무선 전력을 수신하여 상기 무선 전력의 전송 효율을 측정하는 단계; The step of receiving the wireless power for testing from the plurality of transmitter measures the transmission efficiency of the wireless power; And
    상기 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는 단계 The method comprising using a transmission efficiency of the measured wireless power transfer to the wireless power transmitter select more than one
    를 포함하는 수신기의 무선 전력 수신 방법. Wireless power receiving method of a receiver including a.
  4. 제3항에 있어서, 4. The method of claim 3,
    상기 접속 요청 메시지는 상기 복수 개의 송신기들과 상기 수신기와의 매칭을 위한 메시지이며, 상기 수신기가 상기 무선 전력을 수신하는 주기 정보 및 상기 수신기가 수신할 무선 전력의 용량 정보를 더 포함하는 수신기의 무선 전력 수신 방법. The access request message is a message for matching with the receiver and the plurality of transmitters, the radio receiver further comprising: a period information and capability information of the wireless power to the reception of the receiver to the receiver receiving the wireless power power receiving method.
  5. 제1항에 있어서, According to claim 1,
    상기 인지하는 단계는, Further comprising: if the is,
    상기 수신기와 상기 복수 개의 송신기들 간의 거리를 기반으로 상기 복수 개의 송신기들을 인지하는, 수신기의 무선 전력 수신 방법. Wireless power receiving method based on the distance between the receiver and the plurality of transmitters for recognizing the plurality of transmitters, receivers.
  6. 제5항에 있어서, 6. The method of claim 5,
    상기 선택하는 단계는, Wherein the selection is
    상기 거리가 측정된 복수 개의 송신기들에게 접속(Association) 요청 메시지를 전송하는 단계; Sending a connection (Association) request message to a plurality of transmitters of the distance is measured;
    상기 복수 개의 송신기들로부터 테스트를 위한 무선 전력을 수신하여 상기 테스트를 위한 무선 전력의 전송 효율을 측정하는 단계; The step of receiving the wireless power for testing from the plurality of transmitter measures the transmission efficiency of the wireless power for the test; And
    상기 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는 단계 The method comprising using a transmission efficiency of the measured wireless power transfer to the wireless power transmitter select more than one
    를 포함하는 수신기의 무선 전력 수신 방법. Wireless power receiving method of a receiver including a.
  7. 제5항에 있어서, 6. The method of claim 5,
    상기 수신기는 GPS(Global Positioning System) 및 WiFi(Wireless Fidelity)의 네트워크 중 적어도 하나를 이용하여 상기 거리를 측정하는, 수신기의 무선 전력 수신 방법. The receiver GPS wireless power receiving method of measuring the distance using at least one of the network (Global Positioning System) and WiFi (Wireless Fidelity), receiver.
  8. 제1항에 있어서, According to claim 1,
    상기 인지하는 단계는, Further comprising: if the is,
    상기 복수 개의 송신기들로부터 전송되는 신호들을 수신하는 단계; Receiving signals transmitted from the plurality of transmitters; And
    상기 수신된 신호들의 개수로 상기 송신기들을 인지하는 단계 As the number of the received signal phase for recognizing the transmitter
    를 포함하는 수신기의 무선 전력 수신 방법. Wireless power receiving method of a receiver including a.
  9. 제1항 내지 제8항 중 어느 한 항의 방법을 컴퓨터에서 실행하기 위한 프로그램을 기록하는 컴퓨터 판독 가능한 기록 매체. Claim 1 to claim 8 on a computer-readable recording medium for recording a program for executing the method of any one of the computer section.
  10. 무선 전력 수신을 위한 수신기에 있어서, The receiver for receiving wireless power,
    상기 무선 전력을 전송하는 복수 개의 송신기들을 인지하고, 상기 인지된 복수 개의 송신기들 중 상기 수신기에게 상기 무선 전력을 전송할 두 개 이상의 송신기를 선택하는 제어부; Control unit for recognizing a plurality of transmitters for transmitting the wireless power and transmitting the power to the radio receiver of a plurality of said transmitter or optional two or more transmitters; And
    상기 선택된 두 개 이상의 송신기로부터 상기 무선 전력을 수신하는 수신부 Receiving unit for receiving the wireless power from the selected more than one transmitter
    를 포함하는 무선 전력 수신을 위한 수신기. A receiver for the wireless power receiving comprising a.
  11. 제10항에 있어서, 11. The method of claim 10,
    상기 제어부는, Wherein,
    시분할 또는 주파수 분할에 의한 인 밴드 시그널링(In-band signaling) 방식을 이용하여 상기 복수 개의 송신기들을 인지하는, 무선 전력 수신을 위한 수신기. Time division or frequency division in-band signaling (In-band signaling), a receiver for the wireless power receiving using a method for recognizing the plurality of transmitters by.
  12. 제11항에 있어서, 12. The method of claim 11,
    상기 복수 개의 송신기들로부터 전송되는 신호들의 수신 효율을 각각 측정하는 제1측정부; A first measurement unit for respectively measuring a reception efficiency of the signals transmitted from the plurality of transmitters;
    상기 측정된 수신 효율을 포함하는 접속(Association) 요청 메시지를 상기 복수 개의 송신기들에게 전송하는 통신부; A connection (Association) request message including the measured reception efficiency of the communication unit to transmit to the plurality of transmitters; And
    상기 복수 개의 송신기들로부터 전송되는 테스트를 위한 무선 전력의 전송 효율을 측정하는 제2측정부 A second measuring unit for measuring the transmission efficiency of the wireless power for testing transmitted from the plurality of transmitters
    를 더 포함하며, Including more and
    상기 제어부는, 상기 제2측정부에서 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는, 무선 전력 수신을 위한 수신기. Wherein the control unit, the second measuring unit of the wireless power transmission efficiency and a receiver for receiving wireless power, for selecting more than one transmitter to transmit the wireless power using the measured at.
  13. 제12항에 있어서, 13. The method of claim 12,
    상기 접속 요청 메시지는 상기 복수 개의 송신기들과 상기 수신기와의 매칭을 위한 메시지이며, The access request message is a message for matching with the receiver and the plurality of transmitters,
    상기 제어부는, 상기 수신기가 상기 무선 전력을 수신하는 주기 정보 및 상기 수신기가 수신할 무선 전력의 용량 정보를 더 포함하는 상기 접속 요청 메시지를 생성하는 무선 전력 수신을 위한 수신기. Wherein, the period information and a receiver for the wireless power receiving and generating the connection request message further comprises the capability information of the wireless power receiver to the receiver that the receiver receiving the wireless power.
  14. 제10항에 있어서, 11. The method of claim 10,
    상기 제어부는, 상기 수신기와 상기 복수 개의 송신기들 간의 거리를 기반으로 상기 복수 개의 송신기들을 인지하는, 무선 전력 수신을 위한 수신기. The control unit may, based on the distance between the receiver and the plurality of transmitters for recognizing the plurality of transmitters, a receiver for the wireless power receiving.
  15. 제14항에 있어서, 15. The method of claim 14,
    상기 거리를 측정하는 제1측정부; A first measuring section for measuring said distance;
    접속(Association) 요청 메시지를 상기 거리가 측정된 복수 개의 송신기들에게 전송하는 통신부; Connection (Association) communication unit for transmitting a request message to a plurality of transmitters of the distance is measured; And
    상기 복수 개의 송신기들로부터 전송되는 테스트를 위한 무선 전력의 전송 효율을 측정하는 제2측정부 A second measuring unit for measuring the transmission efficiency of the wireless power for testing transmitted from the plurality of transmitters
    를 더 포함하며, Including more and
    상기 제어부는, 상기 제2측정부에서 측정된 무선 전력의 전송 효율을 이용하여 상기 무선 전력을 전송할 송신기를 두 개 이상 선택하는, 무선 전력 수신을 위한 수신기. Wherein the control unit, the second measuring unit of the wireless power transmission efficiency and a receiver for receiving wireless power, for selecting more than one transmitter to transmit the wireless power using the measured at.
  16. 제14항에 있어서, 15. The method of claim 14,
    상기 거리는, GPS(Global Positioning System) 및 WiFi(Wireless Fidelity)의 네트워크 중 적어도 하나를 이용하여 측정되는, 무선 전력 수신을 위한 수신기. It said distance, GPS (Global Positioning System) and WiFi (Wireless Fidelity) receiver for, receiving wireless power is measured using at least one of the network.
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