WO2015068994A1 - Wireless power transmitting device using variable resonance frequency and method for same - Google Patents

Wireless power transmitting device using variable resonance frequency and method for same Download PDF

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Publication number
WO2015068994A1
WO2015068994A1 PCT/KR2014/010453 KR2014010453W WO2015068994A1 WO 2015068994 A1 WO2015068994 A1 WO 2015068994A1 KR 2014010453 W KR2014010453 W KR 2014010453W WO 2015068994 A1 WO2015068994 A1 WO 2015068994A1
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WO
WIPO (PCT)
Prior art keywords
power
signal
receiving device
power receiving
resonance frequency
Prior art date
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PCT/KR2014/010453
Other languages
French (fr)
Korean (ko)
Inventor
박진표
유수엽
나원산
Original Assignee
주식회사 아모센스
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Publication of WO2015068994A1 publication Critical patent/WO2015068994A1/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
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, 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
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/0072—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks of microelectro-mechanical resonators or networks
    • H03H3/0076—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks of microelectro-mechanical resonators or networks for obtaining desired frequency or temperature coefficients
    • H03H3/0077—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks of microelectro-mechanical resonators or networks for obtaining desired frequency or temperature coefficients by tuning of resonance frequency
    • H04B5/24—
    • H04B5/79—
    • 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
    • H03H2003/0414—Resonance frequency

Definitions

  • the present invention relates to a resonant frequency variable type wireless power transmitter and method for adjusting the resonant frequency of a wireless power transmitter for wirelessly transmitting power according to the resonant frequency of the power receiver.
  • various portable terminals such as smart phones and PDAs (Personal Digital Assistants) are equipped with power receivers for supplying operating power.
  • PDAs Personal Digital Assistants
  • the power receiving device is to charge the power supplied from an external charging device, and to operate by supplying the charged power to the portable terminal as operating power.
  • Such a power receiver includes a battery for charging power and a power supplied from an external power supply device to charge the battery, discharge the power charged in the battery, and supply the battery to the portable terminal as operating power. It may include.
  • the connector connection method has a problem in that the connector is separated by carelessness of the user, or if the connector is repeatedly used many times, the connector is easily disconnected even in the light impact as the durability of the connector decreases.
  • the wireless power transmitter transmits power wirelessly using, for example, an electromagnetic induction method.
  • the power receiving device receives power transmitted by the wireless power transmitter wirelessly and charges the received power into a battery.
  • the wireless power transmitter is wirelessly stable and transmits power with high efficiency.
  • the power receiving device makes a lot of efforts to receive the maximum power transmitted by the wireless power transmitter and charge the battery. I'm leaning.
  • the wireless power transmission apparatus may be classified into a magnetic induction (MI) method (that is, a standard standard) and a magnetic resonance (MR) method (that is, a standard standard), and are representative of the two magnetic induction methods.
  • the scheme may include a wireless power consortium (WPC) scheme (ie, a standard specification) and a power matters alliance (PMA) scheme (ie, a standard specification).
  • WPC wireless power consortium
  • PMA power matters alliance
  • the WPC method uses 100 to 205 GHz, the Type1 method uses 232 to 278 GHz, and the Type3 method uses 205 to 300 GHz as an alternating frequency of used power for transmitting power wirelessly. Doing.
  • a user who wants to purchase a magnetic induction wireless power transmission device should check whether the power receiving device is equipped with a WPC method or a PMA method, and purchase a type 1 method even when the power receiving device is a PMA method. Or, it was necessary to confirm whether or not it was a Type 3 method before purchasing.
  • Republic of Korea Patent Publication No. 10-2012-0052517 relates to a wireless power transmission method for transmitting power wirelessly, the step of recognizing an external device; Requesting charging related information from the external device when the external device is recognized; Receiving a charge response signal including the charge related information corresponding to the charge related information from the external device; Generating resonance power based on the charge response signal including the charge related information; Disclosed is a wireless power transmission method comprising wirelessly outputting the resonance power to the external device.
  • Patent Publication No. 10-2012-0052517 supports only the wireless charging standard standard of the magnetic induction method or the magnetic resonance method does not provide a function to support both the magnetic induction method and the magnetic resonance method.
  • the present invention has been proposed to solve the above problems of the prior art, the purpose of which is to adjust the resonant frequency of the wireless power transmission device for transmitting power wirelessly according to the resonant frequency of the power receiving device wireless power transmission method An apparatus and a method thereof are provided.
  • Another object of the present invention is to provide a resonant frequency variable wireless power transmission apparatus and method for adjusting the resonant frequency of a wireless power transmission device for transmitting power wirelessly according to the type of power receiving device.
  • Another object of the present invention is to determine whether the wireless power transmission device communicates with the power receiving device whether the power receiving device is a WPC method or a PMA method, and if the PMA method is a Type1 method or a Type3 method.
  • the present invention provides a resonant frequency variable type wireless power transmitter and a method for controlling a resonant frequency of a wirelessly transmitted power signal.
  • the wireless power transmission apparatus the resonance frequency variable for varying the resonant frequency of the power signal to be transmitted;
  • a power signal transmitter for generating a power signal according to a variable resonant frequency and wirelessly transmitting the power signal to a power receiver; And communicating with the power receiver through the power signal transmitter to acquire the information signal of the power receiver, and adjust the resonance frequency of the resonance frequency variable part according to the obtained information signal, and wherein the power signal transmitter is the resonance frequency variable part.
  • It may include a control unit for generating a power signal according to the resonant frequency to control the transmission to the power receiving device.
  • the information signal may include an information signal indicating whether the power receiving device is a WPC method or a PMA method.
  • the information signal is an information signal indicating that the PMA method, it may include a signal indicating whether it is a Type1 method or a Type3 method.
  • the information signal may include a resonance frequency of the power receiving device.
  • the resonance frequency variable unit the first inductor; First and second capacitors connected in parallel with each other and in series with the first inductor; And a first switch inserted between any one of the first and second capacitors and the first inductor, the first switch maintaining or releasing a connection state under the control of the controller.
  • First and second inductors connected in parallel with each other and in series with the first capacitor; And a first switch inserted between any one of the first and second inductors and the first capacitor to maintain or release a connection state under the control of the controller.
  • the resonant frequency variable portion the first inductor; First and second capacitors connected in series with each other and in series with the first inductor; And a first switch configured to select one of the connection point of the first and second capacitors and the second capacitor according to the control of the controller.
  • First and second inductors connected in series with each other and in series with the first capacitor; And a first switch for selecting one of the connection points of the first and second inductors and the second inductor under the control of the controller.
  • the control unit performs a communication with the power receiving device through a power signal transmission unit to determine the type of the power receiving device, the power receiving unit determined by the control unit Adjusting the resonant frequency of the resonant frequency variable part according to the type of the device; and controlling the power signal transmitter by the controller to generate the power signal according to the resonant frequency of the resonant frequency variable part. And transmitting to the power receiving device.
  • the power transmission command may include a power transmission command when a power transmission command is generated through a key signal input unit or when a power receiving device is placed on the power signal transmission unit.
  • the determining of the type of the power receiving device by performing communication with the power receiving device through the power signal transmitting unit may include: generating, by the control unit, an information request signal and transmitting the information request signal to the power receiving device through the power signal transmitting unit;
  • the power receiving device may include generating an information signal indicating its type according to the information request signal and transmitting the generated information signal to the controller through the power signal transmitter.
  • the information signal may include a signal indicating whether the power receiving device is a WPC type or a PMA type, and whether the power receiving device is a Type1 type or a Type3 type in the PMA type.
  • the step of the control unit determines the completion of charging of the power receiving device, when the control unit determines the completion of charging of the power receiving device the power signal transmission unit
  • the method may further include ending the operation of wirelessly transmitting power by controlling.
  • control unit may receive an information signal indicating the power charging state of the power receiving device through the power signal transmission unit.
  • the resonant frequency variable wireless power transmitter of the present invention checks whether the wireless power transmitter communicates with the power receiving device to determine whether the power receiving device is a WPC method or a PMA method. Check whether it is Type1 type or Type3 type and adjust the resonant frequency to transmit power signal wirelessly.
  • a single wireless power transmitter can be used to transmit a wireless power signal to various types of power receivers with optimum efficiency.
  • FIG. 1 is a block diagram showing the configuration of a resonant frequency variable wireless power transmission apparatus according to an embodiment of the present invention
  • FIGS. 2A to 2D are detailed circuit diagrams illustrating various embodiments of a resonant frequency variable part in a resonant frequency variable wireless power transmitter of the present invention
  • FIG. 3 is a flowchart illustrating a wireless power transmission method of a resonant frequency variable wireless power transmission apparatus according to the present invention.
  • FIG. 1 is a block diagram showing the configuration of a resonant frequency variable wireless power transmission apparatus according to an embodiment of the present invention.
  • a resonant frequency variable wireless power transmission apparatus includes a resonant frequency variable unit 100, a power signal transmitter 102, and a controller 104. Wirelessly transmits power to 200.
  • the resonance frequency variable unit 100 varies the resonance frequency of the power signal to be transmitted according to the control signal of the controller 104.
  • the power signal transmitter 102 includes, for example, a plurality of power transmission coils (not shown), and communicates with the power receiver 200 through the plurality of power transmission coils.
  • the power receiver 200 receives an information signal indicating whether it is a WPC method or a PMA method, and whether the power receiver 200 is a Type1 method or a Type3 method when the PMA method is used.
  • the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the power signal to the power receiver 200.
  • the control unit 104 communicates with the power receiving device 200 through the power transmission control unit 102 to obtain the information signal of the power receiving device 200.
  • the controller 104 adjusts the resonant frequency of the resonant frequency variable part 100 according to the acquired information signal, and the power signal transmitter 100 transmits power according to the resonant frequency of the resonant frequency variable part 100. It generates a signal to control the transmission to the power receiving device 200.
  • the controller 104 determines whether or not a power transmission command has occurred.
  • a power transmission command may be generated through a key signal input unit (not shown).
  • the controller 104 detects a change in impedance of the power signal transmitter 102. It may be determined that a power transmission command has occurred.
  • controller 104 may be configured to determine whether a power transmission command has occurred in various ways.
  • the controller 104 When the power transmission command is generated, the controller 104 generates an information request signal, outputs the generated information request signal to the power signal transmitter 102, and receives the power receiver 200 through the plurality of power transmission coils. To send).
  • the power receiving apparatus 200 for receiving the information request signal generates and transmits its own information signal, and the power signal transmitter 102 receives the power signal through the plurality of power transmission coils.
  • the control unit 104 To the control unit 104.
  • the information signal transmitted by the power receiving device 200 in accordance with the information request signal the signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method when the PMA method is used. It may include.
  • the information signal transmitted by the power receiving device 200 according to the information request signal a standard mode signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method when the PMA method is used.
  • an information signal of a resonance frequency an information signal of a resonance frequency.
  • the controller 104 determines a standard method signal or a resonant frequency of the power receiver 200 included in the information signal, and controls the resonant frequency of the resonant frequency variable part 100 correspondingly.
  • the power signal transmitter 102 can generate a power signal according to the controlled resonant frequency.
  • the control unit 104 controls the power signal transmitter 102 to generate a power signal and wirelessly transmit the generated power signal to the power receiver 200.
  • the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the generated power signal to the power receiver 200.
  • FIGS. 2A to 2D are detailed circuit diagrams illustrating various embodiments of a resonant frequency variable part in a resonant frequency variable wireless power transmitter of the present invention.
  • the resonant frequency variable part of the present invention connects the first inductor L11 and the first capacitor C11 in series, and connects the first switch SW11 and the first switch serially connected to the first capacitor C11.
  • the control unit 104 switches the first switch SW11 according to the WPC method or the PMA method so that the resonance frequency of the power signal transmitter 102 can be changed. Can be.
  • the resonant frequency variable part of the present invention connects a second inductor L21 and two third and fourth capacitors C21 and C22 in series, and includes a second switch SW21 to provide the first switch.
  • the connection point of the third and fourth capacitors C21 and C22 or the fourth capacitor C22 is selected, and the control unit 104 switches the second switch SW21 according to the WPC method or the PMA method to power the signal.
  • the resonant frequency of the transmitter 102 may be configured to be variable.
  • control unit 104 may be configured to change the resonant frequency of the power signal transmission unit 102 by switching the third switch SW31 according to the WPC method or the PMA method.
  • a sixth capacitor C41 and two fifth and sixth inductors L41 and L42 are connected in series, and a fourth switch SW41 is provided to provide the fifth and sixth inductors ( The connection point of the L41 and L42 or the sixth inductor L42 is selected, and the control unit 104 switches the fourth switch SW41 according to the WPC method or the PMA method so that the power signal transmitter 102 It can be configured to vary the resonant frequency.
  • the resonant frequency variable unit 100 is configured by various circuits, and the control unit 104 controls the resonant frequency variable unit 100 according to the WPC method or the PMA method so that the power signal transmitter 102 is used.
  • the control unit 104 controls the resonant frequency variable unit 100 according to the WPC method or the PMA method so that the power signal transmitter 102 is used.
  • the embodiment shown in Figures 2a to 2d as an example showing a configuration that allows the control unit 104 to vary the resonant frequency of the power signal transmission unit 102 according to the WPC method or PMA method as an example
  • the resonant frequency of the power signal transmission unit 102 may be varied by simply changing the configuration of the resonant frequency variable unit 100 according to the Type 1 or Type 3 method. have.
  • FIG. 3 is a signal flow diagram showing the operation of the control unit according to the resonant frequency variable wireless power transmission apparatus of the present invention.
  • the controller 104 determines whether a power transmission command has occurred (S300).
  • a power transmission command may be generated through a key signal input unit (not shown).
  • the controller 104 detects an impedance change of the power signal transmitter 102 and then powers the power. It can be determined that a transmission command has occurred.
  • controller 104 may be configured to determine whether a power transmission command has occurred in various ways.
  • the control unit 104 communicates with the power receiving device 200 to determine whether the power receiving device is a WPC method or a PMA method, and a Type1 method or Type3 method when the PMA method is used. An information signal indicating whether or not the reception is received is received (S302).
  • the controller 104 generates an information request signal, outputs the generated information request signal to the power signal transmitter 102, and transmits the information request signal to the power receiver 200 through the plurality of power transmission coils.
  • the power receiving device 200 According to the information request signal, the power receiving device 200 generates and transmits an information signal indicating whether it is a WPC method or a PMA method and whether it is a Type1 method or a Type3 method when the PMA method is used.
  • the control unit 104 receives the information signal through the power signal transmission unit 102.
  • the information signal transmitted by the power receiver 200 includes information on the resonance frequency in addition to a signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method in the PMA method. can do.
  • the control unit 104 determines the type of the power receiving device 200 by using the information signal obtained by performing the communication (S304), and controls the resonant frequency of the resonant frequency variable unit 100 according to the determined type, the power
  • the signal transmitter 102 may generate a power signal according to the resonant frequency controlled (S306).
  • the control unit 104 controls the power signal transmitter 102 to generate a power signal and wirelessly transmit the generated power signal to the power receiver 200 (S308).
  • the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the generated power signal to the power receiver 200.
  • the controller 104 determines whether charging of the power receiving device 200 is completed (S310).
  • the power receiving device 200 generates and transmits an information signal according to a power charging state while charging power in a battery (not shown in the drawing), and the control unit 104 transmits the power signal transmission unit 102. By receiving the information signal according to the power charging state through to determine whether the charging of the power receiving device 200 is complete.
  • the control unit 104 returns to step S308 and the power signal transmission unit 102 is set in the resonance frequency variable unit 100.
  • the power signal is continuously transmitted to the power receiving device 200 wirelessly at the resonant frequency, and the operation of determining whether the charging of the power receiving device 200 is completed is repeatedly performed.
  • the controller 104 controls the power signal transmitter 102 to stop transmission of the power signal (S312) and ends.
  • the resonant frequency is changed by taking a magnetic induction wireless power transmission device as an example.
  • the present invention can be simply applied to a wireless power transmission apparatus of a magnetic resonance method.
  • the frequency control device of the present invention may be configured to transmit power at a resonance frequency corresponding to the standard method of the magnetic resonance receiver device.
  • the resonance frequency of the transmitted power signal is set to satisfy one of the two standard standards.
  • the standardization proceeds later to satisfy all the standard standards that are commercialized. It is also possible to vary the resonant frequency of the signal in multiple modes.
  • the present invention can be applied to a resonant frequency variable wireless power transmitter and method for adjusting the resonant frequency of the wireless power transmitter for transmitting power wirelessly according to the resonant frequency of the power receiver.

Abstract

The present invention relates to a wireless power transmitting device using variable resonance frequency and a method for same, capable of controlling the resonance frequency of the wireless power transmitting device, which transmits power wirelessly, according to the resonance frequency of a power receiving device. The wireless power transmitting device, according to the present invention, comprises: a resonance frequency varying unit for varying the resonance frequency of a power signal to be transmitted; a power signal transmitting unit for generating a power signal according to the resonance frequency varied by the resonance frequency varying unit, and wirelessly transmitting same to a power receiving device; and a control unit for obtaining, by communicating with the power receiving device through the power signal transmitting unit, an information signal of the power receiving device, controlling the resonance frequency of the resonance frequency varying unit according to the obtained information signal, generating a power signal from the power signal transmitting unit according to the resonance frequency of the resonance frequency varying unit, and for controlling so that the power signal is transmitted to the power receiving device.

Description

공진주파수 가변방식 무선전력전송장치 및 그 방법Resonant frequency variable wireless power transmitter and method
본 발명은 무선으로 전력을 전송하는 무선 전력전송장치의 공진주파수를 수전장치의 공진주파수에 따라 조절하는 공진주파수 가변방식 무선전력전송장치 및 그 방법에 관한 것이다. The present invention relates to a resonant frequency variable type wireless power transmitter and method for adjusting the resonant frequency of a wireless power transmitter for wirelessly transmitting power according to the resonant frequency of the power receiver.
일반적으로 스마트 폰 및 PDA(Personal Digital Assistant) 등과 같은 각종 휴대용 단말기에는 동작전력을 공급하기 위한 수전장치가 장착되어 있다.In general, various portable terminals such as smart phones and PDAs (Personal Digital Assistants) are equipped with power receivers for supplying operating power.
상기 수전장치는 외부의 충전장치로부터 공급되는 전력을 충전하고, 충전한 전력을 상기 휴대용 단말기에 동작전력으로 공급하여 동작시킬 수 있도록 하는 것이다.The power receiving device is to charge the power supplied from an external charging device, and to operate by supplying the charged power to the portable terminal as operating power.
이러한 수전장치는 전력을 충전하는 배터리와, 외부의 전력공급장치가 공급되는 전력을 입력하여 상기 배터리에 충전시키고 상기 배터리에 충전된 전력을 방전시켜 상기 휴대용 단말기에 동작전력으로 공급하는 충방전 회로 등을 포함할 수 있다.Such a power receiver includes a battery for charging power and a power supplied from an external power supply device to charge the battery, discharge the power charged in the battery, and supply the battery to the portable terminal as operating power. It may include.
상기 충전장치와 상기 수전장치를 전기적으로 연결하는 방식으로는 상기 전력공급장치에서 전력이 출력되는 단자와, 상기 수전장치에서 전력이 입력되는 단자를 케이블 및 커넥터 등을 통해 직접 상호간에 연결하는 단자 연결방식이 알려져 있다.As a method of electrically connecting the charging device and the power receiving device, a terminal connection for directly connecting the terminal from which the power is output from the power supply device and the terminal from which the power is input from the power receiving device directly through a cable and a connector, etc. The method is known.
상기 커넥터 연결방식은 사용자의 부주의에 의해 결합된 커넥터가 분리되거나, 다수회 반복하여 사용하면 커넥터의 내구성이 떨어짐에 따라 가벼운 충격에도 쉽게 커넥터가 분리되는 문제가 있다.The connector connection method has a problem in that the connector is separated by carelessness of the user, or if the connector is repeatedly used many times, the connector is easily disconnected even in the light impact as the durability of the connector decreases.
최근에는 상기와 같은 단자 연결방식의 여러 가지 문제점을 해결하기 위하여, 수전장치에 무선으로 전력을 전송하는 무선전력전송장치가 제시되고 있다.Recently, in order to solve various problems of the terminal connection method as described above, a wireless power transmission apparatus for transmitting power to the power receiving device wirelessly has been proposed.
상기 무선전력전송장치는 예를 들면, 전자기 유도방식을 이용하여 무선으로 전력을 전송한다. 그리고 상기 수전장치는 상기 무선전력전송장치가 무선으로 전송하는 전력을 수신하고, 수신한 전력을 배터리에 충전시키고 있다.The wireless power transmitter transmits power wirelessly using, for example, an electromagnetic induction method. The power receiving device receives power transmitted by the wireless power transmitter wirelessly and charges the received power into a battery.
상기한 무선전력전송장치는 무선으로 안정하고, 높은 효율로 전력을 전송하고, 이와 더불어 상기 수전장치는 상기 무선 전력전송장치가 전송하는 전력을 최대로 수신하여 배터리에 충전시킬 수 있도록 하는데 많은 노력을 기울이고 있다.The wireless power transmitter is wirelessly stable and transmits power with high efficiency. In addition, the power receiving device makes a lot of efforts to receive the maximum power transmitted by the wireless power transmitter and charge the battery. I'm leaning.
상기 무선전력전송장치는 자기유도(Magnetic Induction, MI) 방식(즉, 표준 규격)과, 자기공명(Magnetic Resonance, MR) 방식(즉, 표준 규격)으로 구분할 수 있고, 상기 자기유도방식의 대표적인 두 방식으로는 WPC(Wireless Power Consortium) 방식(즉, 표준 규격) 및 PMA(Power Matters Alliance) 방식(즉, 표준 규격)을 들 수 있다.The wireless power transmission apparatus may be classified into a magnetic induction (MI) method (that is, a standard standard) and a magnetic resonance (MR) method (that is, a standard standard), and are representative of the two magnetic induction methods. The scheme may include a wireless power consortium (WPC) scheme (ie, a standard specification) and a power matters alliance (PMA) scheme (ie, a standard specification).
그리고 전력을 무선으로 전송하는 사용 전력의 교류 주파수로, 상기 WPC 방식은 100∼205㎑를 사용하고, 상기 PMA 방식은 Type1 방식이 232∼278㎑를 사용하며, Type3 방식이 205∼300㎑를 사용하고 있다.The WPC method uses 100 to 205 GHz, the Type1 method uses 232 to 278 GHz, and the Type3 method uses 205 to 300 GHz as an alternating frequency of used power for transmitting power wirelessly. Doing.
상기 무선전력전송장치로 수전장치에 전력을 전송할 경우에 표준 규격의 차이에 따라 무선전력 주파수가 서로 상이하면 전력 전송효율이 저하된다.In the case of transmitting power to the power receiving device through the wireless power transmission device, if the wireless power frequencies are different from each other according to the difference of the standard, the power transmission efficiency is reduced.
따라서, 자기유도방식의 무선전력전송장치를 구입하고자 하는 사용자는 자신이 구비하고 있는 수전장치가 WPC 방식 또는 PMA 방식인지의 여부를 확인하여 구입해야 되고, 또한 수전장치가 PMA 방식일 경우에도 Type1 방식 또는 Type3 방식인지의 여부를 정확하게 확인한 후 구입해야 되었다.Therefore, a user who wants to purchase a magnetic induction wireless power transmission device should check whether the power receiving device is equipped with a WPC method or a PMA method, and purchase a type 1 method even when the power receiving device is a PMA method. Or, it was necessary to confirm whether or not it was a Type 3 method before purchasing.
대한민국 공개특허공보 제10-2012-0052517호에는 무선으로 전력을 전송하는 무선전력전송방법에 관한 것으로서, 외부장치를 인식하는 단계와; 상기 외부장치가 인식되는 경우 상기 외부장치에 충전관련정보를 요청하는 단계와; 상기 외부장치로부터 상기 충전관련정보에 대응하는 상기 충전관련정보를 포함하는 충전응답신호를 수신하는 단계와; 상기 충전관련정보를 포함하는 상기 충전응답신호에 기초하여 공진전력을 생성하는 단계와; 상기 외부장치에 무선으로 상기 공진전력을 출력하는 단계를 포함하는 무선전력전송방법이 개시되어 있다.Republic of Korea Patent Publication No. 10-2012-0052517 relates to a wireless power transmission method for transmitting power wirelessly, the step of recognizing an external device; Requesting charging related information from the external device when the external device is recognized; Receiving a charge response signal including the charge related information corresponding to the charge related information from the external device; Generating resonance power based on the charge response signal including the charge related information; Disclosed is a wireless power transmission method comprising wirelessly outputting the resonance power to the external device.
상기 공개특허공보 제10-2012-0052517호에는 자기유도방식 또는 자기공명방식 중 어느 하나의 무선충전 표준 규격을 지원할 뿐 자기유도방식과 자기공명방식 모두를 지원하는 기능은 제시하지 않고 있다.The Patent Publication No. 10-2012-0052517 supports only the wireless charging standard standard of the magnetic induction method or the magnetic resonance method does not provide a function to support both the magnetic induction method and the magnetic resonance method.
또한, 수전장치가 WPC 방식 및 PMA 방식을 모두 지원하는 듀얼 모드 수전장치는 제안되어 있으나, WPC 방식 및 PMA 방식을 모두 지원하는 듀얼 모드 또는 멀티 모드 무선전력전송장치는 제안되지 않고 있다.In addition, a dual mode power receiving device in which the power receiving device supports both the WPC method and the PMA method has been proposed, but a dual mode or multi-mode wireless power transmission device supporting both the WPC method and the PMA method has not been proposed.
본 발명은 상기한 종래기술의 문제점을 해결하고자 제안된 것으로, 그 목적은 무선으로 전력을 전송하는 무선 전력전송장치의 공진주파수를 수전장치의 공진주파수에 따라 조절할 수 있는 공진주파수 가변방식 무선전력전송장치 및 그 방법을 제공하는 데 있다.The present invention has been proposed to solve the above problems of the prior art, the purpose of which is to adjust the resonant frequency of the wireless power transmission device for transmitting power wirelessly according to the resonant frequency of the power receiving device wireless power transmission method An apparatus and a method thereof are provided.
본 발명의 다른 목적은 무선으로 전력을 전송하는 무선 전력전송장치의 공진주파수를 수전장치의 종류에 따라 조절할 수 있는 공진주파수 가변방식 무선전력전송장치 및 그 방법을 제공하는 데 있다.Another object of the present invention is to provide a resonant frequency variable wireless power transmission apparatus and method for adjusting the resonant frequency of a wireless power transmission device for transmitting power wirelessly according to the type of power receiving device.
본 발명의 또 다른 목적은 무선전력전송장치가 수전장치와 통신을 수행하여 수전장치가 WPC 방식 또는 PMA 방식인지의 여부를 확인하고, 또한 PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 확인하여 무선 전송되는 전력신호의 공진주파수를 조절할 수 있는 공진주파수 가변방식 무선전력전송장치 및 그 방법을 제공하는 데 있다.Another object of the present invention is to determine whether the wireless power transmission device communicates with the power receiving device whether the power receiving device is a WPC method or a PMA method, and if the PMA method is a Type1 method or a Type3 method. The present invention provides a resonant frequency variable type wireless power transmitter and a method for controlling a resonant frequency of a wirelessly transmitted power signal.
본 발명의 일 특징에 따르면, 무선전력전송장치는, 전송하고자 하는 전력신호의 공진주파수를 가변하는 공진주파수 가변부; 상기 공진주파수 가변부가 가변한 공진주파수에 따라 전력신호를 발생하여 수전장치에 무선으로 전송하는 전력신호 전송부; 및 상기 전력신호 전송부를 통해 상기 수전장치와 통신을 수행하여 상기 수전장치의 정보신호를 취득하고 상기 취득한 정보신호에 따라 상기 공진주파수 가변부의 공진주파수를 조절하고 상기 전력신호 전송부가 상기 공진주파수 가변부의 공진주파수에 따라 전력신호를 발생하여 상기 수전장치로 전송하게 제어하는 제어부;를 포함할 수 있다.According to one aspect of the invention, the wireless power transmission apparatus, the resonance frequency variable for varying the resonant frequency of the power signal to be transmitted; A power signal transmitter for generating a power signal according to a variable resonant frequency and wirelessly transmitting the power signal to a power receiver; And communicating with the power receiver through the power signal transmitter to acquire the information signal of the power receiver, and adjust the resonance frequency of the resonance frequency variable part according to the obtained information signal, and wherein the power signal transmitter is the resonance frequency variable part. It may include a control unit for generating a power signal according to the resonant frequency to control the transmission to the power receiving device.
상기 정보신호에는, 상기 수전장치가 WPC 방식 또는 PMA 방식인지의 여부를 알리는 정보신호가 포함될 수 있다.The information signal may include an information signal indicating whether the power receiving device is a WPC method or a PMA method.
상기 정보신호가 PMA 방식임을 알리는 정보신호일 경우에, Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호를 포함할 수 있다.When the information signal is an information signal indicating that the PMA method, it may include a signal indicating whether it is a Type1 method or a Type3 method.
상기 정보신호는, 상기 수전장치의 공진주파수가 포함될 수 있다.The information signal may include a resonance frequency of the power receiving device.
상기 공진주파수 가변부는, 제1인덕터; 서로 병렬접속되고 상기 제1인덕터에 직렬연결된 제1 및 제2 커패시터; 및 상기 제1 및 제2 커패시터 중 어느 하나와 상기 제1인덕터 사이에 삽입되며 상기 제어부의 제어에 따라 연결 상태를 유지 또는 해제하는 제1스위치를 포함하거나, 또는 제1커패시터; 서로 병렬접속되고 상기 제1커패시터에 직렬연결된 제1 및 제2 인덕터; 및 상기 제1 및 제2 인덕터 중 어느 하나와 상기 제1커패시터 사이에 삽입되며 상기 제어부의 제어에 따라 연결 상태를 유지 또는 해제하는 제1스위치를 포함할 수 있다.The resonance frequency variable unit, the first inductor; First and second capacitors connected in parallel with each other and in series with the first inductor; And a first switch inserted between any one of the first and second capacitors and the first inductor, the first switch maintaining or releasing a connection state under the control of the controller. First and second inductors connected in parallel with each other and in series with the first capacitor; And a first switch inserted between any one of the first and second inductors and the first capacitor to maintain or release a connection state under the control of the controller.
또한, 상기 공진주파수 가변부는, 제1인덕터; 서로 직렬접속되고 상기 제1인덕터에 직렬연결된 제1 및 제2 커패시터; 및 상기 제어부의 제어에 따라 상기 제1 및 제2 커패시터의 접속점과 상기 제2커패시터 중 하나를 선택하는 제1스위치를 포함하거나, 또는 제1커패시터; 서로 직렬접속되고 상기 제1커패시터에 직렬연결된 제1 및 제2 인덕터; 및 상기 제어부의 제어에 따라 상기 제1 및 제2 인덕터의 접속점과 상기 제2인덕터 중 하나를 선택하는 제1스위치를 포함할 수 있다.In addition, the resonant frequency variable portion, the first inductor; First and second capacitors connected in series with each other and in series with the first inductor; And a first switch configured to select one of the connection point of the first and second capacitors and the second capacitor according to the control of the controller. First and second inductors connected in series with each other and in series with the first capacitor; And a first switch for selecting one of the connection points of the first and second inductors and the second inductor under the control of the controller.
본 발명의 다른 특징에 따르면, 무선전력전송장치의 무선전력전송방법은, 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 종류를 판단하는 단계와, 상기 제어부가 판단한 상기 수전장치의 종류에 따라 공진주파수 가변부의 공진주파수를 조절하는 단계와, 상기 제어부가 전력신호 전송부를 제어하여 상기 전력신호 전송부가 상기 공진주파수 가변부의 공진주파수에 따른 전력신호를 발생하고 발생한 전력신호를 상기 수전장치로 전송하는 단계를 포함할 수 있다.According to another aspect of the present invention, in the wireless power transmission method of the wireless power transmission device, the control unit performs a communication with the power receiving device through a power signal transmission unit to determine the type of the power receiving device, the power receiving unit determined by the control unit Adjusting the resonant frequency of the resonant frequency variable part according to the type of the device; and controlling the power signal transmitter by the controller to generate the power signal according to the resonant frequency of the resonant frequency variable part. And transmitting to the power receiving device.
상기 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 정보신호를 수신하고 상기 수신한 정보신호로 상기 수전장치의 종류를 판단하는 단계는, 전력전송명령이 발생되었을 경우에 수행할 수 있다.Receiving the information signal of the power receiving device by the communication unit with the power receiving device through the power signal transmission unit and determining the type of the power receiving device by the received information signal, if the power transmission command is generated can do.
상기 전력전송명령은, 키신호 입력부를 통해 전력전송명령이 발생되거나 또는 상기 전력신호 전송부에 상부에 수전장치가 놓일 경우에 전력전송명령이 발생할 수 있다.The power transmission command may include a power transmission command when a power transmission command is generated through a key signal input unit or when a power receiving device is placed on the power signal transmission unit.
상기 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 종류를 판단하는 단계는, 상기 제어부가 정보요청신호를 발생하여 상기 전력신호 전송부를 통해 상기 수전장치로 전송하는 단계와, 상기 수전장치가 상기 정보요청신호에 따라 자신의 종류를 알리는 정보신호를 발생하여 상기 전력신호 전송부를 통해 상기 제어부로 전송하는 단계를 포함할 수 있다.The determining of the type of the power receiving device by performing communication with the power receiving device through the power signal transmitting unit may include: generating, by the control unit, an information request signal and transmitting the information request signal to the power receiving device through the power signal transmitting unit; The power receiving device may include generating an information signal indicating its type according to the information request signal and transmitting the generated information signal to the controller through the power signal transmitter.
상기 정보신호에는, 상기 수전장치가 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호를 포함할 수 있다.The information signal may include a signal indicating whether the power receiving device is a WPC type or a PMA type, and whether the power receiving device is a Type1 type or a Type3 type in the PMA type.
또한, 본 발명의 무선전력전송장치의 무선전력전송방법은, 상기 제어부가 상기 수전장치의 충전완료를 판단하는 단계와, 상기 제어부가 상기 수전장치의 충전완료를 판단하였을 경우에 상기 전력신호 전송부를 제어하여 무선으로 전력을 전송하는 동작을 종료하는 단계를 더 포함할 수 있다.In addition, the wireless power transmission method of the wireless power transmission apparatus of the present invention, the step of the control unit determines the completion of charging of the power receiving device, when the control unit determines the completion of charging of the power receiving device the power signal transmission unit The method may further include ending the operation of wirelessly transmitting power by controlling.
상기 제어부가 상기 수전장치의 충전완료를 판단하는 단계는, 상기 수전장치가 전력충전상태를 알리는 정보신호를 상기 전력신호 전송부를 통해 수신할 수 있다.In the determining of the completion of charging of the power receiving device, the control unit may receive an information signal indicating the power charging state of the power receiving device through the power signal transmission unit.
상기한 바와 같이, 본 발명의 공진주파수 가변방식 무선전력전송장치는 무선전력전송장치가 수전장치와 통신을 수행하여 수전장치가 WPC 방식 또는 PMA 방식인지의 여부를 확인하고, 또한 PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 확인하여 전력신호를 무선으로 전송하는 공진주파수를 조절한다.As described above, the resonant frequency variable wireless power transmitter of the present invention checks whether the wireless power transmitter communicates with the power receiving device to determine whether the power receiving device is a WPC method or a PMA method. Check whether it is Type1 type or Type3 type and adjust the resonant frequency to transmit power signal wirelessly.
따라서, 무선전력전송장치를 구입하고자 하는 사용자는 자신이 사용하고 있는 수전장치의 종류를 일일이 확인하지 않아도 된다.Therefore, a user who wants to purchase a wireless power transmission device does not have to check the type of the power receiving device he is using.
또한, 하나의 무선전력전송장치를 사용하여 여러 종류의 수전장치에 최적의 효율로 무선 전력신호를 전송할 수 있다.In addition, a single wireless power transmitter can be used to transmit a wireless power signal to various types of power receivers with optimum efficiency.
이하에서는 첨부된 도면들을 참조하여 본 발명을 한정하지 않는 실시예를 통해 본 발명을 보다 상세히 설명하며, 일부 도면에서 동일한 요소에 대해서는 동일한 부호를 부여한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings, which do not limit the present invention, and like reference numerals designate like elements in some of the drawings.
도 1은 본 발명의 바람직한 일 실시예에 따른 공진주파수 가변방식 무선전력전송장치의 구성을 보인 블록도,1 is a block diagram showing the configuration of a resonant frequency variable wireless power transmission apparatus according to an embodiment of the present invention;
도 2a 내지 도 2d는 본 발명의 공진주파수 가변방식 무선전력전송장치에서 공진주파수 가변부의 여러 가지 실시예를 보인 상세 회로도, 2A to 2D are detailed circuit diagrams illustrating various embodiments of a resonant frequency variable part in a resonant frequency variable wireless power transmitter of the present invention;
도 3은 본 발명에 따른 공진주파수 가변방식 무선전력전송장치의 무선전력전송방법을 나타낸 흐름도이다.3 is a flowchart illustrating a wireless power transmission method of a resonant frequency variable wireless power transmission apparatus according to the present invention.
이하의 상세한 설명은 예시에 지나지 않으며, 본 발명의 실시예를 도시한 것에 불과하다. 또한 본 발명의 원리와 개념은 가장 유용하고, 쉽게 설명할 목적으로 제공된다.The following detailed description is only illustrative, and merely illustrates embodiments of the present invention. In addition, the principles and concepts of the present invention are provided for the purpose of explanation and most useful.
따라서, 본 발명의 기본 이해를 위한 필요 이상의 자세한 구조를 제공하고자 하지 않았음은 물론 통상의 지식을 가진 자가 본 발명의 실체에서 실시될 수 있는 여러 가지의 형태들을 도면을 통해 예시한다.Accordingly, various forms that can be implemented by those of ordinary skill in the art, as well as not intended to provide a detailed structure beyond the basic understanding of the present invention through the drawings.
도 1은 본 발명의 바람직한 일 실시예에 따른 공진주파수 가변방식 무선전력전송장치의 구성을 보인 블록도이다. 1 is a block diagram showing the configuration of a resonant frequency variable wireless power transmission apparatus according to an embodiment of the present invention.
도 1을 참고하면, 본 발명의 바람직한 일 실시예에 따른 공진주파수 가변방식 무선전력전송장치는 공진주파수 가변부(100), 전력신호 전송부(102) 및 제어부(104)를 포함하며, 수전장치(200)에 무선으로 전력을 전송한다.Referring to FIG. 1, a resonant frequency variable wireless power transmission apparatus according to an exemplary embodiment of the present invention includes a resonant frequency variable unit 100, a power signal transmitter 102, and a controller 104. Wirelessly transmits power to 200.
상기 공진주파수 가변부(100)는 제어부(104)의 제어신호에 따라, 전송하고자 하는 전력신호의 공진주파수를 가변한다.The resonance frequency variable unit 100 varies the resonance frequency of the power signal to be transmitted according to the control signal of the controller 104.
상기 전력신호 전송부(102)는 예를 들면, 복수 개의 전력전송코일(도면에 도시되지 않았음)을 구비하고 있는 것으로서, 상기 복수 개의 전력전송코일을 통해 수전장치(200)와 통신을 수행하여, 상기 수전장치(200)가 WPC 방식 또는 PMA 방식인지의 여부와, 또한 PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 정보신호를 수신한다. 또한, 상기 전력신호 전송부(102)는 상기 공진주파수 가변부(100)의 공진주파수로 전력신호를 발생하여 무선으로 수전장치(200)에 전송한다.The power signal transmitter 102 includes, for example, a plurality of power transmission coils (not shown), and communicates with the power receiver 200 through the plurality of power transmission coils. In addition, the power receiver 200 receives an information signal indicating whether it is a WPC method or a PMA method, and whether the power receiver 200 is a Type1 method or a Type3 method when the PMA method is used. In addition, the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the power signal to the power receiver 200.
상기 제어부(104)는 상기 전력전송 제어부(102)를 통해 상기 수전장치(200)와 통신을 수행하여 상기 수전장치(200)의 정보신호를 취득한다. 또한 상기 제어부(104)는 상기 취득한 정보신호에 따라 상기 공진주파수 가변부(100)의 공진주파수를 조절하고 상기 전력신호 전송부(100)가 상기 공진주파수 가변부(100)의 공진주파수에 따라 전력신호를 발생하여 상기 수전장치(200)로 전송하는 것을 제어한다.The control unit 104 communicates with the power receiving device 200 through the power transmission control unit 102 to obtain the information signal of the power receiving device 200. In addition, the controller 104 adjusts the resonant frequency of the resonant frequency variable part 100 according to the acquired information signal, and the power signal transmitter 100 transmits power according to the resonant frequency of the resonant frequency variable part 100. It generates a signal to control the transmission to the power receiving device 200.
이러한 구성을 가지는 본 발명의 공진주파수 가변방식 무선전력전송장치는, 제어부(104)가 전력전송명령이 발생하였는지의 여부를 판단한다.In the resonant frequency variable wireless power transmission apparatus of the present invention having such a configuration, the controller 104 determines whether or not a power transmission command has occurred.
여기서, 전력전송명령의 발생은 여러 가지의 방법이 있다. 예를 들면, 키신호 입력부(도면에 도시되지 않았음)을 통해 전력전송명령이 발생될 수 있다. 또한, 전력신호 전송부(102)에 구비되어 있는 복수 개의 전력전송코일의 상부에 수전장치(200)가 놓일 경우에 상기 제어부(104)가 상기 전력신호 전송부(102)의 임피던스 변화를 검출하여 전력전송명령이 발생한 것으로 판단할 수 있다.Here, the generation of the power transfer command can be made in various ways. For example, a power transmission command may be generated through a key signal input unit (not shown). In addition, when the power receiver 200 is placed on the plurality of power transmission coils provided in the power signal transmitter 102, the controller 104 detects a change in impedance of the power signal transmitter 102. It may be determined that a power transmission command has occurred.
또한, 상기한 방법 이외에도 여러 가지의 방법으로 상기 제어부(104)는 전력전송명령이 발생하였는지의 여부를 판단하게 구성할 수도 있다.In addition to the above-described method, the controller 104 may be configured to determine whether a power transmission command has occurred in various ways.
상기 전력전송명령이 발생하였을 경우에 상기 제어부(104)는 정보요청신호를 발생하고, 발생한 정보요청신호를 상기 전력신호 전송부(102)로 출력하여 상기 복수 개의 전력전송코일을 통해 수전장치(200)로 전송한다.When the power transmission command is generated, the controller 104 generates an information request signal, outputs the generated information request signal to the power signal transmitter 102, and receives the power receiver 200 through the plurality of power transmission coils. To send).
이와 같은 상태에서 상기 정보요청신호를 수신하는 수전장치(200)는, 자신의 정보신호를 발생하여 전송하고, 상기 정보신호를 상기 전력신호 전송부(102)가 상기 복수 개의 전력전송코일을 통해 수신하여 상기 제어부(104)에 제공한다.In such a state, the power receiving apparatus 200 for receiving the information request signal generates and transmits its own information signal, and the power signal transmitter 102 receives the power signal through the plurality of power transmission coils. To the control unit 104.
여기서, 상기 정보요청신호에 따라 상기 수전장치(200)가 전송하는 정보신호에는, 자신이 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호를 포함할 수 있다. 또한 상기 정보요청신호에 따라 상기 수전장치(200)가 전송하는 정보신호에는, 자신이 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 표준방식신호와 함께 공진주파수의 정보신호를 포함할 수 있다.Here, the information signal transmitted by the power receiving device 200 in accordance with the information request signal, the signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method when the PMA method is used. It may include. In addition, the information signal transmitted by the power receiving device 200 according to the information request signal, a standard mode signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method when the PMA method is used. And an information signal of a resonance frequency.
상기 제어부(104)는 상기 정보신호가 수신될 경우에 정보신호에 포함된 수전장치(200)의 표준방식신호나 공진주파수를 판단하고, 이에 대응하여 공진주파수 가변부(100)의 공진주파수를 제어하여, 상기 전력신호 전송부(102)가 상기 제어하는 공진주파수에 따른 전력신호를 발생할 수 있도록 한다.When the information signal is received, the controller 104 determines a standard method signal or a resonant frequency of the power receiver 200 included in the information signal, and controls the resonant frequency of the resonant frequency variable part 100 correspondingly. Thus, the power signal transmitter 102 can generate a power signal according to the controlled resonant frequency.
그리고 상기 제어부(104)는 상기 전력신호 전송부(102)가, 전력신호를 발생하고, 발생한 전력신호를 상기 수전장치(200)에 무선으로 전송하게 제어한다.The control unit 104 controls the power signal transmitter 102 to generate a power signal and wirelessly transmit the generated power signal to the power receiver 200.
그러면, 상기 전력신호 전송부(102)는 상기 공진주파수 가변부(100)의 공진주파수로 전력신호를 발생하고, 발생한 전력신호를 상기 수전장치(200)에 무선으로 전송하게 된다.Then, the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the generated power signal to the power receiver 200.
도 2a 내지 도 2d는 본 발명의 공진주파수 가변방식 무선전력전송장치에서 공진주파수 가변부의 여러 가지 실시예들을 보인 상세 회로도이다. 2A to 2D are detailed circuit diagrams illustrating various embodiments of a resonant frequency variable part in a resonant frequency variable wireless power transmitter of the present invention.
도 2a를 참조하면, 본 발명의 공진주파수 가변부는 제1인덕터(L11) 및 제1커패시터(C11)을 직렬연결하고, 상기 제1커패시터(C11)에, 직렬 연결된 제1스위치(SW11) 및 제2커패시터(C12)를 병렬 연결한 것으로서, WPC 방식 또는 PMA 방식에 따라 제어부(104)가 상기 제1스위치(SW11)를 스위칭시켜 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다. Referring to FIG. 2A, the resonant frequency variable part of the present invention connects the first inductor L11 and the first capacitor C11 in series, and connects the first switch SW11 and the first switch serially connected to the first capacitor C11. As the two capacitors C12 are connected in parallel, the control unit 104 switches the first switch SW11 according to the WPC method or the PMA method so that the resonance frequency of the power signal transmitter 102 can be changed. Can be.
그리고 도 2b를 참조하면, 본 발명의 공진주파수 가변부는 제2인덕터(L21) 및 2개의 제3 및 제4 커패시터(C21, C22)를 직렬 연결하고, 제2스위치(SW21)를 구비하여 상기 제3 및 제4 커패시터(C21, C22)의 접속점 또는 상기 제4커패시터(C22)를 선택하게 한 것으로서, WPC 방식 또는 PMA 방식에 따라 제어부(104)가 상기 제2스위치(SW21)를 스위칭시켜 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다.2B, the resonant frequency variable part of the present invention connects a second inductor L21 and two third and fourth capacitors C21 and C22 in series, and includes a second switch SW21 to provide the first switch. The connection point of the third and fourth capacitors C21 and C22 or the fourth capacitor C22 is selected, and the control unit 104 switches the second switch SW21 according to the WPC method or the PMA method to power the signal. The resonant frequency of the transmitter 102 may be configured to be variable.
또한, 도 2c를 참조하면, 제3인덕터(L31) 및 제5커패시터(C31)를 직렬 연결하고, 상기 제3인덕터(L31)에, 직렬 연결된 제4인덕터(L32) 및 제3스위치(SW31)를 병렬 연결한 것으로서 WPC 방식 또는 PMA 방식에 따라 제어부(104)가 상기 제3스위치(SW31)를 스위칭시켜 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다.In addition, referring to FIG. 2C, a fourth inductor L32 and a third switch SW31 connected in series with the third inductor L31 and the fifth capacitor C31 and connected in series with the third inductor L31. In parallel, the control unit 104 may be configured to change the resonant frequency of the power signal transmission unit 102 by switching the third switch SW31 according to the WPC method or the PMA method.
또한, 도 2d를 참조하면, 제6커패시터(C41) 및 2개의 제5 및 제6 인덕터(L41, L42)를 직렬 연결하고, 제4스위치(SW41)를 구비하여 상기 제5 및 제6 인덕터(L41, L42)의 접속점 또는 상기 제6인덕터(L42)를 선택하게 한 것으로서, WPC 방식 또는 PMA 방식에 따라 제어부(104)가 상기 제4스위치(SW41)를 스위칭시켜 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다.Also, referring to FIG. 2D, a sixth capacitor C41 and two fifth and sixth inductors L41 and L42 are connected in series, and a fourth switch SW41 is provided to provide the fifth and sixth inductors ( The connection point of the L41 and L42 or the sixth inductor L42 is selected, and the control unit 104 switches the fourth switch SW41 according to the WPC method or the PMA method so that the power signal transmitter 102 It can be configured to vary the resonant frequency.
또한 상기한 구성 이외에도 여러 가지의 회로로 공진주파수 가변부(100)를 구성하고, WPC 방식 또는 PMA 방식에 따라 상기 제어부(104)가 공진주파수 가변부(100)를 제어하여 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다.In addition to the above-described configuration, the resonant frequency variable unit 100 is configured by various circuits, and the control unit 104 controls the resonant frequency variable unit 100 according to the WPC method or the PMA method so that the power signal transmitter 102 is used. Can be configured to vary the resonance frequency of
한편, 상기 도 2a 내지 도 2d에 도시된 실시예는 WPC 방식 또는 PMA 방식에 따라 상기 제어부(104)가 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있도록 하는 구성을 예로 들어 도시한 것으로서, 본 발명을 실시함에 있어서는 PMA 방식일 경우에 Type1 방식 또는 Type3 방식에 따라 간단히 공진주파수 가변부(100)의 구성을 변경하여 전력신호 전송부(102)의 공진주파수를 가변시킬 수 있게 구성할 수 있다.On the other hand, the embodiment shown in Figures 2a to 2d as an example showing a configuration that allows the control unit 104 to vary the resonant frequency of the power signal transmission unit 102 according to the WPC method or PMA method as an example In the present invention, in the case of the PMA method, the resonant frequency of the power signal transmission unit 102 may be varied by simply changing the configuration of the resonant frequency variable unit 100 according to the Type 1 or Type 3 method. have.
도 3은 본 발명의 공진주파수 가변방식 무선전력전송장치에 따른 제어부의 동작을 보인 신호흐름도이다. 3 is a signal flow diagram showing the operation of the control unit according to the resonant frequency variable wireless power transmission apparatus of the present invention.
도 3을 참조하면, 제어부(104)가 전력전송명령이 발생하였는지의 여부를 판단한다(S300).Referring to FIG. 3, the controller 104 determines whether a power transmission command has occurred (S300).
여기서, 전력전송명령의 발생은 여러 가지의 방법이 있다. 예를 들면, 키신호 입력부(도면에 도시되지 않았음)을 통해 전력전송명령이 발생될 수 있다. 또한 전력신호 전송부(102)에 구비되어 있는 복수 개의 전력전송코일의 상부에 수전장치(200)가 놓일 경우에 상기 제어부(104)가 상기 전력신호 전송부(102)의 임피던스 변화를 검출하여 전력전송명령이 발생한 것으로 판단할 수 있다.Here, the generation of the power transfer command can be made in various ways. For example, a power transmission command may be generated through a key signal input unit (not shown). In addition, when the power receiver 200 is placed on the plurality of power transmission coils provided in the power signal transmitter 102, the controller 104 detects an impedance change of the power signal transmitter 102 and then powers the power. It can be determined that a transmission command has occurred.
또한, 상기한 방법 이외에도 여러 가지의 방법으로 상기 제어부(104)는 전력전송명령이 발생하였는지의 여부를 판단하게 구성할 수도 있다.In addition to the above-described method, the controller 104 may be configured to determine whether a power transmission command has occurred in various ways.
상기 전력전송명령이 발생하였을 경우에 상기 제어부(104)는 상기 수전장치(200)와 통신을 수행하여 상기 수전장치가 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 정보신호를 수신한다(S302).When the power transmission command is generated, the control unit 104 communicates with the power receiving device 200 to determine whether the power receiving device is a WPC method or a PMA method, and a Type1 method or Type3 method when the PMA method is used. An information signal indicating whether or not the reception is received is received (S302).
즉, 상기 제어부(104)는 정보요청신호를 발생하고, 발생한 정보요청신호를 상기 전력신호 전송부(102)로 출력하여 상기 복수 개의 전력전송코일을 통해 수전장치(200)로 전송한다.That is, the controller 104 generates an information request signal, outputs the generated information request signal to the power signal transmitter 102, and transmits the information request signal to the power receiver 200 through the plurality of power transmission coils.
상기 수전장치(200)는, 상기 정보요청신호에 따라, 자신이 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 정보신호를 발생하여 전송하는 것으로서 상기 제어부(104)는 상기 전력신호 전송부(102)를 통해 상기 정보신호를 수신한다.According to the information request signal, the power receiving device 200 generates and transmits an information signal indicating whether it is a WPC method or a PMA method and whether it is a Type1 method or a Type3 method when the PMA method is used. The control unit 104 receives the information signal through the power signal transmission unit 102.
여기서, 상기 수전장치(200)가 전송하는 정보신호에는, 자신이 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호 이외에 공진주파수의 정보를 포함할 수 있다.Here, the information signal transmitted by the power receiver 200 includes information on the resonance frequency in addition to a signal indicating whether it is a WPC method or a PMA method, and whether it is a Type1 method or a Type3 method in the PMA method. can do.
상기 제어부(104)는 상기 통신을 수행하여 취득한 정보신호로 상기 수전장치(200)의 종류를 판단하고(S304), 판단한 종류에 따라 공진주파수 가변부(100)의 공진주파수를 제어하여, 상기 전력신호 전송부(102)가 상기 제어하는 공진주파수에 따른 전력신호를 발생할 수 있도록 한다(S306).The control unit 104 determines the type of the power receiving device 200 by using the information signal obtained by performing the communication (S304), and controls the resonant frequency of the resonant frequency variable unit 100 according to the determined type, the power The signal transmitter 102 may generate a power signal according to the resonant frequency controlled (S306).
그리고 상기 제어부(104)는 상기 전력신호 전송부(102)가, 전력신호를 발생하고, 발생한 전력신호를 상기 수전장치(200)에 무선으로 전송하게 제어한다(S308).The control unit 104 controls the power signal transmitter 102 to generate a power signal and wirelessly transmit the generated power signal to the power receiver 200 (S308).
그러면, 상기 전력신호 전송부(102)는 상기 공진주파수 가변부(100)의 공진주파수로 전력신호를 발생하고, 발생한 전력신호를 상기 수전장치(200)에 무선으로 전송하게 된다.Then, the power signal transmitter 102 generates a power signal at the resonance frequency of the resonance frequency variable unit 100 and wirelessly transmits the generated power signal to the power receiver 200.
이와 같은 상태에서 상기 제어부(104)는 상기 수전장치(200)의 충전이 완료되었는지의 여부를 판단한다(S310).In this state, the controller 104 determines whether charging of the power receiving device 200 is completed (S310).
즉, 상기 수전장치(200)는 배터리(도면에 도시되지 않았음)에 전력을 충전하면서 전력충전상태에 따른 정보신호를 발생하여 전송하는 것으로서 상기 제어부(104)는 상기 전력신호 전송부(102)를 통해 상기 전력충전상태에 따른 정보신호를 수신하여 상기 수전장치(200)의 충전이 완료되었는지의 여부를 판단한다.That is, the power receiving device 200 generates and transmits an information signal according to a power charging state while charging power in a battery (not shown in the drawing), and the control unit 104 transmits the power signal transmission unit 102. By receiving the information signal according to the power charging state through to determine whether the charging of the power receiving device 200 is complete.
상기 판단 결과 상기 수전장치(200)의 충전이 완료되지 않았을 경우에 상기 제어부(104)는 상기 단계(S308)로 복귀하여 상기 전력신호 전송부(102)가 상기 공진주파수 가변부(100)에 설정된 공진주파수로 계속 전력신호를 상기 수전장치(200)에 무선으로 전송하게 하면서 상기 수전장치(200)의 충전이 완료되었는지의 여부를 판단하는 동작을 반복 수행한다.When the charging of the power receiving device 200 is not completed as a result of the determination, the control unit 104 returns to step S308 and the power signal transmission unit 102 is set in the resonance frequency variable unit 100. The power signal is continuously transmitted to the power receiving device 200 wirelessly at the resonant frequency, and the operation of determining whether the charging of the power receiving device 200 is completed is repeatedly performed.
그리고 상기 판단 결과 상기 수전장치(200)의 충전이 완료되었을 경우에 상기 제어부(104)는 상기 전력신호 전송부(102)를 제어하여 전력신호의 전송을 정지하고(S312), 종료한다.When the charging of the power receiving device 200 is completed as a result of the determination, the controller 104 controls the power signal transmitter 102 to stop transmission of the power signal (S312) and ends.
한편 상기에서는 자기유도방식의 무선전력전송장치를 예로 들어 공진주파수를 가변시키는 것을 설명하였다. 본 발명을 실시함에 있어서는 자기공명방식의 무선전력전송장치에 간단히 적용하여 실시할 수 있다.On the other hand, it has been described that the resonant frequency is changed by taking a magnetic induction wireless power transmission device as an example. In the present invention, the present invention can be simply applied to a wireless power transmission apparatus of a magnetic resonance method.
즉, 자기공명방식의 무선전력전송장치에 본 발명의 주파수 조절장치를 적용하여 자기공명방식 수전장치의 표준 방식에 대응하는 공진주파수로 전력을 전송하게 구성할 수도 있다.That is, by applying the frequency control device of the present invention to a wireless power transmission device of the magnetic resonance method, it may be configured to transmit power at a resonance frequency corresponding to the standard method of the magnetic resonance receiver device.
또한, 상기 실시예 설명에서는 두 가지의 표준 규격 중 하나를 만족하도록 전송되는 전력신호의 공진주파수를 설정하는 것을 예시하였으나, 두 가지 표준 규격 이외에 차후에 표준화가 진행되어 상용화되는 모든 표준 규격을 만족하도록 전력신호의 공진주파수를 멀티 모드로 가변하는 것도 가능하다.In addition, in the above-described embodiment, the resonance frequency of the transmitted power signal is set to satisfy one of the two standard standards. However, in addition to the two standard standards, the standardization proceeds later to satisfy all the standard standards that are commercialized. It is also possible to vary the resonant frequency of the signal in multiple modes.
이상에서는 대표적인 실시 예를 통하여 본 발명에 대하여 상세하게 설명하였으나, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자는 상술한 실시 예에 대하여 본 발명의 범주에서 벗어나지 않는 한도 내에서 다양한 변형이 가능함을 이해할 것이다.The present invention has been described in detail with reference to exemplary embodiments, but those skilled in the art to which the present invention pertains can make various modifications without departing from the scope of the present invention. Will understand.
그러므로 본 발명의 권리범위는 설명된 실시 예에 국한되어 정해져서는 안 되며, 후술하는 특허청구범위 뿐만 아니라 이 특허청구범위와 균등한 것들에 의해 정해져야 한다.Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.
본 발명은 무선으로 전력을 전송하는 무선 전력전송장치의 공진주파수를 수전장치의 공진주파수에 따라 조절하는 공진주파수 가변방식 무선전력전송장치 및 방법에 적용될 수 있다.The present invention can be applied to a resonant frequency variable wireless power transmitter and method for adjusting the resonant frequency of the wireless power transmitter for transmitting power wirelessly according to the resonant frequency of the power receiver.

Claims (15)

  1. 전송하고자 하는 전력신호의 공진주파수를 가변하는 공진주파수 가변부;A resonant frequency variable for varying a resonant frequency of a power signal to be transmitted;
    상기 공진주파수 가변부가 가변한 공진주파수에 따라 전력신호를 발생하여 수전장치에 무선으로 전송하는 전력신호 전송부; 및A power signal transmitter for generating a power signal according to a variable resonant frequency and wirelessly transmitting the power signal to a power receiver; And
    상기 전력신호 전송부를 통해 상기 수전장치와 통신을 수행하여 상기 수전장치의 정보신호를 취득하고 상기 취득한 정보신호에 따라 상기 공진주파수 가변부의 공진주파수를 조절하고 상기 전력신호 전송부가 상기 공진주파수 가변부의 공진주파수에 따라 전력신호를 발생하여 상기 수전장치로 전송하게 제어하는 제어부;를 포함하는 무선전력전송장치.Communicate with the power receiving device through the power signal transmission unit to obtain an information signal of the power receiving device, and adjust the resonance frequency of the resonance frequency variable unit according to the obtained information signal, and the power signal transmission unit resonates the resonance frequency variable unit. And a control unit which generates a power signal according to a frequency and transmits the power signal to the power receiving device.
  2. 제 1 항에 있어서, 상기 정보신호에는,The method of claim 1, wherein the information signal,
    상기 수전장치가 WPC 방식 또는 PMA 방식인지의 여부를 알리는 정보신호가 포함된 무선전력전송장치.Wireless power transmission apparatus including an information signal indicating whether the power receiving device is a WPC method or a PMA method.
  3. 제 2 항에 있어서, 상기 정보신호가 PMA 방식임을 알리는 정보신호일 경우에,The method of claim 2, wherein the information signal indicates that the information signal is a PMA scheme.
    Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호를 포함하는 무선전력전송장치.Wireless power transmission apparatus including a signal indicating whether the type1 or type3 method.
  4. 제 2 항 또는 제 3 항에 있어서, 상기 정보신호는,The method of claim 2 or 3, wherein the information signal,
    상기 수전장치의 공진주파수가 포함된 무선전력전송장치.Wireless power transmission device including a resonance frequency of the power receiving device.
  5. 제 1 항에 있어서, 상기 공진주파수 가변부는,The method of claim 1, wherein the resonant frequency variable,
    제1인덕터;A first inductor;
    서로 병렬접속되고 상기 제1인덕터에 직렬연결된 제1 및 제2 커패시터; 및  First and second capacitors connected in parallel with each other and in series with the first inductor; And
    상기 제1 및 제2 커패시터 중 어느 하나와 상기 제1인덕터 사이에 삽입되며 상기 제어부의 제어에 따라 연결 상태를 유지 또는 해제하는 제1스위치를 포함하는 무선전력전송장치.And a first switch inserted between any one of the first and second capacitors and the first inductor to maintain or release a connection state under the control of the controller.
  6. 제 1 항에 있어서, 상기 공진주파수 가변부는,The method of claim 1, wherein the resonant frequency variable,
    제1커패시터;A first capacitor;
    서로 병렬접속되고 상기 제1커패시터에 직렬연결된 제1 및 제2 인덕터; 및  First and second inductors connected in parallel with each other and in series with the first capacitor; And
    상기 제1 및 제2 인덕터 중 어느 하나와 상기 제1커패시터 사이에 삽입되며 상기 제어부의 제어에 따라 연결 상태를 유지 또는 해제하는 제1스위치를 포함하는 무선전력전송장치.And a first switch inserted between one of the first and second inductors and the first capacitor to maintain or release a connection state under the control of the controller.
  7. 제 1 항에 있어서, 상기 공진주파수 가변부는,The method of claim 1, wherein the resonant frequency variable,
    제1인덕터;A first inductor;
    서로 직렬접속되고 상기 제1인덕터에 직렬연결된 제1 및 제2 커패시터; 및  First and second capacitors connected in series with each other and in series with the first inductor; And
    상기 제어부의 제어에 따라 상기 제1 및 제2 커패시터의 접속점과 상기 제2커패시터 중 하나를 선택하는 제1스위치를 포함하는 무선전력전송장치.And a first switch configured to select one of the connection point of the first and second capacitors and the second capacitor according to the control of the controller.
  8. 제 1 항에 있어서, 상기 공진주파수 가변부는,The method of claim 1, wherein the resonant frequency variable,
    제1커패시터;A first capacitor;
    서로 직렬접속되고 상기 제1커패시터에 직렬연결된 제1 및 제2 인덕터; 및  First and second inductors connected in series with each other and in series with the first capacitor; And
    상기 제어부의 제어에 따라 상기 제1 및 제2 인덕터의 접속점과 상기 제2인덕터 중 하나를 선택하는 제1스위치를 포함하는 무선전력전송장치.And a first switch for selecting one of the connection points of the first and second inductors and the second inductor under control of the controller.
  9. 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 종류를 판단하는 단계;Determining, by the controller, a type of the power receiving device by performing communication with the power receiving device through a power signal transmitter;
    상기 제어부가 판단한 상기 수전장치의 종류에 따라 공진주파수 가변부의 공진주파수를 조절하는 단계; 및Adjusting the resonance frequency of the resonance frequency variable part according to the type of the power receiving device determined by the controller; And
    상기 제어부가 전력신호 전송부를 제어하여 상기 전력신호 전송부가 상기 공진주파수 가변부의 공진주파수에 따른 전력신호를 발생하고 발생한 전력신호를 상기 수전장치로 전송하는 단계;를 포함하는 무선전력전송장치의 무선전력전송방법.And controlling, by the control unit, a power signal transmitter to generate a power signal according to a resonance frequency of the resonance frequency variable unit, and to transmit the generated power signal to the power receiving device. Transmission method.
  10. 제 9 항에 있어서, 상기 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 정보신호를 수신하고 상기 수신한 정보신호로 상기 수전장치의 종류를 판단하는 단계는;The method of claim 9, wherein the control unit communicates with the power receiving device through a power signal transmitter to receive the information signal of the power receiving device and determines the type of the power receiving device based on the received information signal;
    전력전송명령이 발생되었을 경우에 수행하는 무선전력전송장치의 무선전력전송방법.A wireless power transmission method of a wireless power transmission device performed when a power transmission command is generated.
  11. 제 10 항에 있어서, 상기 전력전송명령은11. The method of claim 10, wherein the power transfer command
    키신호 입력부를 통해 전력전송명령이 발생되거나 또는 상기 전력신호 전송부에 상부에 수전장치가 놓일 경우에 전력전송명령을 발생하는 무선전력전송장치의 무선전력전송방법.A wireless power transmission method for generating a power transmission command when a power transmission command is generated through a key signal input unit or when a power receiving device is placed on the power signal transmission unit.
  12. 제 9 항에 있어서, 상기 제어부가 전력신호 전송부를 통해 수전장치와 통신을 수행하여 상기 수전장치의 종류를 판단하는 단계는,The method of claim 9, wherein the control unit communicates with the power receiving device through a power signal transmitter to determine the type of the power receiving device.
    상기 제어부가 정보요청신호를 발생하여 상기 전력신호 전송부를 통해 상기 수전장치로 전송하는 단계; 및Generating, by the controller, an information request signal and transmitting the information request signal to the power receiving device through the power signal transmitter; And
    상기 수전장치가 상기 정보요청신호에 따라 자신의 종류를 알리는 정보신호를 발생하여 상기 전력신호 전송부를 통해 상기 제어부로 전송하는 단계;를 포함하는 무선전력전송장치의 무선전력전송방법.And generating, by the power receiving device, an information signal informing its type according to the information request signal, and transmitting the generated information signal to the control unit through the power signal transmission unit.
  13. 제 10 항 또는 제 12 항에 있어서, 상기 정보신호에는,The information signal according to claim 10 or 12,
    상기 수전장치가 WPC 방식 또는 PMA 방식인지의 여부와, PMA 방식일 경우에 Type1 방식 또는 Type3 방식인지의 여부를 알리는 신호를 포함하는 무선전력전송장치의 무선전력전송방법.And a signal indicating whether the power receiving device is a WPC method or a PMA method, and whether the power receiver device is a Type 1 method or a Type 3 method in the PMA method.
  14. 제 9 항에 있어서,The method of claim 9,
    상기 제어부가 상기 수전장치의 충전완료를 판단하는 단계; 및Determining, by the controller, completion of charging of the power receiving device; And
    상기 제어부가 상기 수전장치의 충전완료를 판단하였을 경우에 상기 전력신호 전송부를 제어하여 무선으로 전력을 전송하는 동작을 종료하는 단계;를 더 포함하는 무선전력전송장치의 무선전력전송방법.And terminating an operation of wirelessly transmitting power by controlling the power signal transmitter when the controller determines completion of charging of the power receiver.
  15. 제 14 항에 있어서, 상기 제어부가 상기 수전장치의 충전완료를 판단하는 단계는,The method of claim 14, wherein the control unit determines the completion of charging of the power receiving device,
    상기 수전장치가 전력충전상태를 알리는 정보신호를 상기 전력신호 전송부를 통해 수신하여 판단하는 무선전력전송장치의 무선전력전송방법.The wireless power transmission method of the wireless power transmission apparatus for receiving and determining the information signal indicating the power charging state of the power receiving device through the power signal transmitter.
PCT/KR2014/010453 2013-11-08 2014-11-03 Wireless power transmitting device using variable resonance frequency and method for same WO2015068994A1 (en)

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