WO2014088164A1 - Method and device for displaying transmitting and receiving alignment in wireless charging system - Google Patents

Method and device for displaying transmitting and receiving alignment in wireless charging system Download PDF

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Publication number
WO2014088164A1
WO2014088164A1 PCT/KR2013/003435 KR2013003435W WO2014088164A1 WO 2014088164 A1 WO2014088164 A1 WO 2014088164A1 KR 2013003435 W KR2013003435 W KR 2013003435W WO 2014088164 A1 WO2014088164 A1 WO 2014088164A1
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Prior art keywords
wireless charging
coil
alignment
primary coil
sensing
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PCT/KR2013/003435
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French (fr)
Korean (ko)
Inventor
신석주
이상곤
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주식회사 에스엔파워콤
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Publication of WO2014088164A1 publication Critical patent/WO2014088164A1/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
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a method and apparatus for displaying a transmission / reception alignment state of a wireless charging system. More particularly, a sensing coil is installed around a secondary coil, and a position of the primary coil is detected by the sensing coil to be displayed on a screen of a mobile terminal. Display method of receiving / receiving alignment status of the wireless charging system that displays the receiving area with the exact position of the secondary coil as a reference position and displays the position of the detected primary coil with a mark so that the alignment can be intuitively recognized through the screen And to an apparatus.
  • Mobile terminals generally use batteries for carrying.
  • the battery charging method may be classified into wired charging and wireless charging, among which wired charging is popular.
  • wired charging is popular.
  • interest in wireless charging technology has recently increased.
  • electromagnetic induction type applies power to a charging pad including a coil inside and charges a battery by using an induced current generated in a coil included in a mobile terminal due to an electromagnetic field generated by a coil inside the charging pad. do.
  • the position of the terminal on the charging pad is very important.
  • FIG. 1 is a diagram illustrating a general wireless charging system. As shown in the drawing, AC commercial power is input to the wireless charging pad 2 through the AC-DC adapter 1, and the smartphone (in the primary coil of the wireless charging transmitter 10 in the wireless charging pad 2) It is a system that generates an induced current to the secondary coil of the wireless charging receiver 20 of 3), and the wireless charging receiver 20 detects the induced current of the secondary coil to charge the battery of the smartphone.
  • the charging pad 2 is provided with a wireless charging transmitter 10, the wireless charging transmitter 10 receives the commercial power from the AC-DC adapter 1 to convert the DC power to the primary power A power supply input unit 11 input to the coil 13 and a transmission control unit 12 and a wireless charge receiving unit 20 for controlling wireless charging transmission by controlling the transmission frequency or amplitude / duty of the primary coil 13. And a transmission control processor 14 for controlling the transmission of the transmission control unit 12 in accordance with the reception state.
  • the wireless charging receiver 20 installed in the smart phone 3 has a voltage induced by the secondary coil 21 and the secondary coil 21 that receives the current induced by the primary coil 13.
  • the wireless charging transmitter 10 based on the voltage detector 22, the voltage detector 22 that stabilizes and outputs the voltage detected by the voltage detector 22, and the voltage detected by the voltage detector 22.
  • a reception control processor 24 for transmitting the reception state information to the battery, and the power output from the voltage stabilizer 23 of the wireless charge receiver 20 is charged to the battery 26 via the battery charger 25. do.
  • Patent Laid-Open No. 2010-206865 (2010.09.16.)
  • the present invention displays the alignment between the transmitting coil of the transmitting device and the receiving coil of the receiving device on the screen of the smart phone with a built-in wireless charging receiver so that the user can intuitively determine the alignment state, the user is aligned in the right position
  • An object of the present invention is to provide a method and apparatus for displaying an alignment state of a transceiver for a wireless charger.
  • a plurality of sensing coils are installed around the transmitting coil or the receiving coil, and the wireless charging terminal receives a magnetic field signal detected by the plurality of sensing coils, detects a relative position between the transmitting coil and the receiving coil, and detects the transmitting coil and The relative position of the receiving coils are displayed on the screen of the terminal to distinguish them from each other.
  • a primary coil is installed on the wireless charging pad, and a secondary coil is installed on the smartphone.
  • the wireless charging alignment status display program module
  • the position of the secondary coil according to a preset sensing coil position and the position of the primary coil are marked to display a transmission / reception alignment state.
  • the wireless charging alignment status display program module
  • the position of the center point of the preset secondary coil is set at the center of the screen, and the circle of the preset diameter is displayed as the reception area, and the position of the primary coil is set to 1 in advance. Characterized in that it is made to perform the alignment state display process to display the car coil mark.
  • the method may further include displaying an alignment error indicating an alignment error state when the strength of the power received from each of the sensing coils is less than a predetermined minimum value.
  • the position of the primary coil is outside the receiving area centered on the secondary coil, it indicates an alignment error, and if the position of the primary coil is within the receiving area, it indicates that the alignment is normal.
  • the displaying of the alignment state may further include a buzzer sound which distinguishes the alignment error from the alignment normal.
  • the transmission and reception alignment status display apparatus of the wireless charging system is installed on the charging pad installed on the charging pad wireless charging transmitter for transmitting power in a magnetic induction method through the primary coil wireless charging system
  • a plurality of sensing coils are installed around the secondary coils of the wireless charging receiver to detect the strength of the power transmitted from the primary coil of the wireless charging transmitter, and the received power strengths of the plurality of sensing coils are respectively detected.
  • a wireless charging alignment status display program module installed as an app application to display the wireless charging alignment state by outputting the position of the secondary coil and the position of the primary coil on the screen together.
  • the wireless charging transmitter detects and transmits a plurality of sensing coils for magnetic field detection around the primary coil and a relative position of the secondary coil with respect to the primary coil by magnetic field detection signals of the plurality of sensing coils.
  • Bluetooth communication module for communication and install the alignment status display program module as an app application on the smartphone,
  • Alignment with respect to the reference position based on the position of any one of the primary coil or the secondary coil on the screen of the smartphone based on the relative position information of the secondary coil with respect to the primary coil received from the Bluetooth communication module.
  • An area is displayed, and the position of the other one of the secondary coil or the primary coil is displayed on the screen as an alignment mark to display the alignment state of the primary coil and the secondary coil on the screen of the smartphone.
  • a sensing coil is installed around the secondary coil to detect the position of the primary coil by the received power intensity detected by the sensing coil, and the receiving area by the center point of the secondary coil and the detected primary coil position.
  • 1 is an explanatory diagram of a general wireless charging system.
  • FIG. 2 is a detailed configuration diagram of a general wireless charging system.
  • Figure 3 is a block diagram of a wireless charging system having a wireless charging alignment status display function according to the present invention.
  • FIG. 4 is a diagram illustrating an installation of a sensing coil of a wireless charging system according to the present invention.
  • FIG. 5 is a flowchart illustrating a method for displaying transmission and reception alignment in a wireless charging system according to the present invention.
  • 6 (a) and 6 (b) are explanatory diagrams of primary coil position detection according to the present invention.
  • FIG. 7 (a) and (b) is an illustration of the spirit state display screen of the wireless charging system according to the present invention.
  • Figure 8 is an exemplary view of the sensing coil voltage output unit of the transmission and reception alignment state display apparatus of the wireless charging system according to the present invention.
  • FIG. 9 is a sensing coil installation configuration of the transmission and reception alignment state display apparatus of the wireless charging system according to another embodiment of the present invention.
  • Figure 3 is a block diagram of a wireless charging system having a wireless charging alignment status display function according to the present invention
  • Figure 4 is a diagram illustrating a sensing coil installation of the wireless charging system according to the present invention.
  • the wireless charging terminal equipped with a wireless charging receiver is described by using a smartphone as an example, but not limited to a smart phone, any kind of wireless to put on the wireless charging pad wireless charging
  • the present invention can be applied as it is to a charging terminal.
  • the wireless charging receiver 20 is installed on the smart phone 2 which is placed on the charging pad 1 provided with the wireless charging transmitter 10 for transmitting power in a magnetically inductive manner through the primary coil 13, Installing a plurality of sensing coils 110 for detecting the strength of the power transmitted from the primary coil of the wireless charging transmitter 10 around the secondary coil 21 of the wireless charging receiver 20, A sensing coil voltage output unit 120 for detecting and outputting received power strengths of the plurality of sensing coils 110, respectively,
  • the sensing coil voltage output unit 120 receives the received power strength of each sensing coil and detects the position of the primary coil corresponding to the position of the preset sensing coil using an inverse relationship between the reception strength and the distance. It is configured to include a wireless charging alignment status display program module 130 installed as an app application to display the position of the secondary coil and the position of the primary coil set by the position of the coil on the screen to display the wireless charging alignment status. It features.
  • the present invention provides at least three sensing coils 101, 102, 103; 110 arranged to form a triangular shape around the secondary coil 21 of the wireless charging receiver 20, and the sensing coil 110.
  • the sensing coil voltage output unit 120 for outputting the detected voltage of
  • the main processor 120 of the smartphone body analyzes the reception voltage of each sensing coil 110 of the sensing coil voltage output unit 120 based on the positions of the three sensing coils 110 set in advance. And a program module 130 for detecting the position of the primary coil 13 by using the inversely proportional distance between the two and the secondary coil, and displaying the position of the receiving region and the detected primary coil on the screen together. It is composed.
  • FIG. 5 is a flowchart illustrating an alignment state display method of a wireless charging system according to the present invention.
  • the alignment state display program module 130 installed as an app application on the smartphone main processor of the present invention detects the position of the primary coil and displays it on the screen.
  • the primary coil 13 is installed on the wireless charging pad 2, and the secondary coil 21 is installed on the smartphone 3 so that the smartphone 3 is placed on the wireless charging pad 2 and placed in the battery.
  • the wireless charging alignment status display program module 130 The wireless charging alignment status display program module 130,
  • the positional information of the primary coil 13 is determined using the fact that the intensity and the distance of the received power are inversely proportional. Extracting and marking the position of the secondary coil 21 according to the preset position of the sensing coil 110 and the position of the primary coil 13 on the screen of the smartphone 3 to display the transmission / reception alignment state. It is characterized by.
  • Primary coil position detection process for detecting the position of the primary coil 13 by extracting the position of one point where the three circles meet by analyzing the original function of each sensing coil 110 generated in the distance detection process (S30) (S40);
  • the position of the center point of the secondary coil 21, which is set in advance, is set at the center of the screen, and a circle having a predetermined diameter is displayed as the reception area 105.
  • the alignment state display process (S50) for displaying the position of the primary coil 13 to the predetermined primary coil mark 104 is characterized in that it is made.
  • the method may further include an alignment error displaying process (S60) indicating an alignment error state when the power received from each sensing coil 110 is less than a preset minimum value.
  • S60 alignment error displaying process
  • the primary coil mark 104 according to the position of the primary coil 13 deviates from the receiving region 105 having the secondary coil 21 as a center point, it indicates an alignment error, and indicates that the primary coil 13 If the primary coil mark 104 according to the position is in the receiving region 105, it indicates that the alignment is normal.
  • the alignment state display process S50 may further output a buzzer sound in which an alignment error and an alignment normal are distinguished from each other.
  • the present invention has described the smart phone 3 as a wireless charging system as an example, the present invention is not limited thereto, and the present invention may be equally applied to all mobile terminals having a display screen.
  • the configuration of the wireless charging transmitter 10 and the wireless charging receiver 20 also shows a general outline, but is not necessarily limited thereto, and the present invention provides a primary by installing at least three sensing coils on a main surface of the secondary coil of the wireless charging receiver. Receiving the induced current transmitted from the coil to detect the received power strength, based on the received power strength to detect the position of the primary coil and to display it on the screen.
  • the sensing coil 110 may receive voltage by the induced current transmitted from the primary coil 13.
  • Receiving strength detection (S10) is performed to detect the respective receiving power strengths from the three sensing coils 110.
  • the wireless charge alignment status display control according to the present invention is started. That is, when the smart phone 3 is far from the charging pad 2, the alignment state display control is not operated.
  • the smart phone 3 is placed on the charging pad 2 to receive power from the sensing coil 110.
  • alignment display control starts.
  • the voltage detection is an example of a method of detecting the received power strength.
  • the reception strength is detected in a state in which at least three sensing coils 110 are installed, and if the reception power of each sensing coil is lower than a predetermined minimum value, an alignment error display process (S60) is performed. That is, when the primary coil is installed in the center of the charging pad 2, when the smart phone 3 is placed on the edge of the charging pad 2, the position of the primary coil cannot be detected.
  • S60 alignment error display process
  • a coordinate setting process S20 of setting coordinates according to the position systems of the three sensing coils and the secondary coil is performed. Coordinate setting is to set the coordinates on the screen to display the alignment state, depending on the model of the wireless charging system, the distance and position or arrangement of the sensing coil days may vary, and the relationship with the secondary coil may also vary. Therefore, three sensing coil center point position coordinates and the center point position coordinates of the secondary coil are set as default values in advance for each model of the wireless charging system. When the app application is downloaded and installed, the corresponding model is selected to automatically set the position of the sensing coil and the position coordinate of the secondary coil according to the type of the model.
  • FIG. 6 (a) and 6 (b) are explanatory views of the primary coil position detection according to the present invention.
  • FIG. 6 (a) shows the center alignment state
  • FIG. 6 (b) shows the state away from the center. Indicates.
  • each original function having a radius inversely proportional to the reception strength of each sensing coil detected in the reception strength detection process S10 is generated.
  • the original function is generated to have a radius of the circle inversely proportional to the reception strength.
  • the circle of the receiving coil A 101 is the smallest, which is the state where the distance between the primary coil 13 and the sensing coil A 101 is closest, and the receiving coil B 102 is closest.
  • the receiving coil C 103 represents a state farthest from the center (the center of the three sensing coils).
  • the display of the screen uses the coordinates of the secondary coil as the center point of the screen, and displays a circle having a predetermined diameter as the receiving area 105, and displays the detected position of the primary coil as the primary coil mark 104 on the screen. Mark together.
  • Figure 7 (a) and (b) is an exemplary view of the spirit state display screen of the wireless charging system according to the present invention
  • Figure 7 (a) shows a case aligned in the center
  • Figure 7 (b) is the center of the center Indicates a case away from
  • the setting position of the secondary coil 21 is matched to the center of the screen, a circle of a predetermined diameter is displayed as the receiving area 105, and the position of the detected primary coil is indicated by the primary coil mark 104. Display on the screen. Therefore, when the primary coil mark 104 enters the reception area 105, the alignment state is displayed as normal, and the primary coil mark 104 is displayed at the position outside the reception area 105 as shown in FIG. Indicates an alignment error. At this time, it can be divided into buzzer sound to inform the normal and error status.
  • the horizontal and vertical lines meeting at the center are displayed to easily recognize the center point, and the primary coil transmission area centering on the primary coil mark 104 also displays a circle as a virtual line. Intuitively and easily recognize the alignment.
  • the alignment state can be easily adjusted by shifting the position so as to be in a normal alignment state, and the alignment state can be easily adjusted to improve wireless charging efficiency. It is possible to align with the best efficiency and to prevent the increase of the charging time due to the alignment error.
  • FIG. 8 is an exemplary view illustrating a sensing coil voltage output unit of a transmission / reception alignment state display device of a wireless charging system according to the present invention.
  • Three resonant circuits 121, 122, 123 consisting of reactors L101, C101, L1, ((L102, C102, L2), (L103, C103, L3) for detecting the reception intensity at different resonant frequencies fa, fb, and fc.
  • a modulator 124 for receiving and modulating the respective outputs of the three resonant circuits 121, 122, and 123 through the resistors R1, R2, and R3, and outputting them to the A / D input port of the smartphone. It is characterized by consisting of).
  • the wireless charging receiver is installed in a terminal such as a smartphone, there are many restrictions on the size. Accordingly, in the present invention, the configuration of the sensing coil voltage output unit 120 for detecting the reception strength from the sensor coils 101, 102, and 103 is shown in FIG.
  • the modulation unit 124 is configured to input three sensing coil detection signals to one A / D input port of the smartphone, thereby minimizing the circuit installation size.
  • the resonant circuits 121, 122, and 123 connected to the respective sensor coils 101, 102, and 103 have different resonance frequencies fa and fb by designing L of the resonant coil and C value of the resonant capacitor differently.
  • fc is configured to be resonant, and is commonly input to the modulator 124 through the resistors R1, R2, and R3, and then modulated and mixed with signals having three different resonance frequencies to the A / D input port of the smartphone.
  • the received modulated signal is restored to three signals corresponding to the resonance frequency, and based on the strength of the received voltage of the three signals, that is, three sensing coils, The position of the coil, i.e., the transmission coil, can be detected.
  • both the FPCBs of the NFC antenna can be formed, and the size and connection complexity with the main body can be significantly reduced.
  • FIG. 9 is a sensing coil installation configuration diagram of a transmission / reception alignment state display apparatus of a wireless charging system according to another embodiment of the present invention.
  • the wireless charging receiver 20 is installed in the smart phone in the alignment state display device of the wireless charging system for wireless charging,
  • a plurality of magnetic field detecting coils 210 installed around the primary coil 13 of the wireless charging transmitter 10;
  • the magnetic field signal detector 220 detects each magnetic field signal from the plurality of sensing coils 210, and the detection signals of the sensing coils 210 are input from the magnetic field signal detector 220.
  • a microprocessor 230 for detecting relative position information of the car coil;
  • a Bluetooth communication module 240 for wirelessly transmitting state position information of the secondary coil according to the position of the primary coil under the control of the microprocessor 230,
  • a plurality of sensing coils 210 are installed in a transmission coil, that is, the primary coil 13, and the plurality of sensing coils 210 are secondary coils according to a wireless charging alignment state.
  • the intensity of the magnetic field to be detected differs depending on the distance from 21). Therefore, the microprocessor 230 detects the relative position of the secondary coil 21 by receiving the magnetic field detection signal of each of the sensing coils 210 through the magnetic field signal detector 220. Since the positions of the primary coil 13 and the plurality of sensing coils 210 are fixed, if a fixed position is set in the program and the strengths of the magnetic field signals detected at the positions of the sensing coils are compared and analyzed, The relative position can be detected.
  • the relative position information of the primary coil and the secondary coil detected by the microprocessor 230 is transmitted to the smartphone through the Bluetooth communication module 240, the smartphone via the built-in Bluetooth communication module the wireless charging transmitter 10 Receiving the relative position information (relative position information for knowing the distance and direction between two points by expressing it as a vector value) of the primary coil and the secondary coil from the Bluetooth communication module 240 installed in the Based on the relative position information of the secondary coil, one of the primary coil or the secondary coil is displayed on the screen as the fixed position in the center of the screen, and the receiving area is displayed for the fixed position and 1 is displayed on the fixed position. One of the secondary coil or the primary coil corresponding to the secondary coil or the secondary coil is displayed on the screen as a variable position. That is, it can be displayed on the screen in the same form as (a) and (b) of FIG.
  • the plurality of sensing coils 21, the magnetic field signal detection unit 220, the microprocessor 230, and the Bluetooth communication module 240 are connected to the transmission coil, that is, the wireless charging transmitter 10 in which the primary coil 13 is installed. Since it can be installed regardless of the size and complexity, the wireless charging receiver 20 is installed, that is, since the Bluetooth communication module is basically built in the terminal, the smartphone, the alignment status display program that can be downloaded and installed as an app application Only the module 130 'needs to be installed. That is, since only the app application is installed on the smartphone, it does not affect the size or mechanical complexity of the terminal.

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  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
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Abstract

The present invention relates to a method and a device for displaying a transmission and receiving alignment in a wireless charging system, and the present invention has a plurality of sensing coils in the periphery of a transmission coil or a reception coil in a magnetic induction-type wireless charging system having wireless charging efficiency that largely depends on the transmitting and receiving alignment, detects the relative positions between the transmission coil and the reception coil by receiving magnetic field signals detected from the plurality of sensing coils in a wireless charging terminal, and displays a wireless charging-type transmitting and receiving alignment by distinctively displaying the detected relative positions of the transmission coil and the reception coil on a screen of the terminal.

Description

무선충전 시스템의 송수신 정렬상태 표시방법 및 장치 Method and device for displaying transmission / reception alignment status of wireless charging system
본 발명은 무선충전 시스템의 송수신 정렬상태 표시방법 및 장치에 관한 것으로서, 더욱 상세하게는 2차코일 주변에 센싱코일을 설치하고, 센싱코일에 의해 1차코일의 위치를 검출하여 이동단말기의 화면에 2차코일의 정위치를 기준 위치로 수신영역을 표시함과 아울러 검출된 1차코일의 위치를 마크로 표시하여 화면을 통해 직관적으로 정렬상태를 인지할 수 있도록 한 무선충전 시스템의 송수신 정렬상태 표시방법 및 장치에 관한 것이다.The present invention relates to a method and apparatus for displaying a transmission / reception alignment state of a wireless charging system. More particularly, a sensing coil is installed around a secondary coil, and a position of the primary coil is detected by the sensing coil to be displayed on a screen of a mobile terminal. Display method of receiving / receiving alignment status of the wireless charging system that displays the receiving area with the exact position of the secondary coil as a reference position and displays the position of the detected primary coil with a mark so that the alignment can be intuitively recognized through the screen And to an apparatus.
이동단말기(스마트폰)는 휴대를 위해 일반적으로 배터리를 사용한다. 배터리 충전 방법에는 유선 충전과 무선 충전으로 구분될 수 있으며, 그 중 유선 충전이 보편화되어 있다. 그러나, 최근에는 무선 충전 기술에 대한 관심이 높아지고 있다.Mobile terminals (smartphones) generally use batteries for carrying. The battery charging method may be classified into wired charging and wireless charging, among which wired charging is popular. However, interest in wireless charging technology has recently increased.
무선 충전 방법에는 전자기 유도 현상을 이용한 전자기 유도식과 송수신단에 동일한 주파수로 전력을 보내는 자기 공명식이 있다. 무선 충전 방식 중 전자기 유도식은 내부에 코일을 포함하고 있는 충전 패드에 전원을 인가하고 충전 패드 내부에 있는 코일에서 발생되는 전자기장으로 인하여 이동단말기에 포함된 코일에 발생되는 유도전류를 이용하여 배터리를 충전한다. 상기 전자기 유도식 충전 방식에서는 충전 패드 위에 올려진 단말기의 위치가 매우 중요하다.In the wireless charging method, there is an electromagnetic induction using electromagnetic induction and a magnetic resonance equation for transmitting power at the same frequency to a transmitting and receiving end. Among wireless charging methods, electromagnetic induction type applies power to a charging pad including a coil inside and charges a battery by using an induced current generated in a coil included in a mobile terminal due to an electromagnetic field generated by a coil inside the charging pad. do. In the electromagnetic inductive charging method, the position of the terminal on the charging pad is very important.
도 1은 일반적인 무선 충전 시스템 설명도이다. 이에 도시된 바와 같이, AC 상용전원을 AC-DC 어뎁터(1)를 통해 무선충전패드(2)에 입력받고, 무선충전패드(2) 내의 무선충전 송신부(10)의 1차코일에서 스마트폰(3)의 무선충전 수신부(20)의 2차코일로 유도전류를 발생시키고, 2차코일의 유도전류를 무선충전 수신부(20)가 검출하여 스마트폰의 배터리에 충전하는 시스템이다.1 is a diagram illustrating a general wireless charging system. As shown in the drawing, AC commercial power is input to the wireless charging pad 2 through the AC-DC adapter 1, and the smartphone (in the primary coil of the wireless charging transmitter 10 in the wireless charging pad 2) It is a system that generates an induced current to the secondary coil of the wireless charging receiver 20 of 3), and the wireless charging receiver 20 detects the induced current of the secondary coil to charge the battery of the smartphone.
도 2는 일반적인 무선 충전 시스템의 상세 구성도이다. 이에 도시된 바와 같이, 충전패드(2)에는 무선충전 송신부(10)가 설치되며, 무선 충전 송신부(10)는, AC-DC 어뎁터(1)로부터 상용전원을 입력받아 직류전원으로 변환하여 1차코일(13)로 입력하는 전원 입력부(11)와, 1차코일(13)의 송신주파수 또는 진폭/듀티(Duty)를 제어하여 무선충전 송신을 제어하는 송신제어부(12) 및 무선충전 수신부(20)와 통신하여 수신상태에따라 상기 송신제어부(12)의 송신제어를 하는 송신제어 프로세서(14)를 포함하여 구성된다.2 is a detailed configuration diagram of a general wireless charging system. As shown in the figure, the charging pad 2 is provided with a wireless charging transmitter 10, the wireless charging transmitter 10 receives the commercial power from the AC-DC adapter 1 to convert the DC power to the primary power A power supply input unit 11 input to the coil 13 and a transmission control unit 12 and a wireless charge receiving unit 20 for controlling wireless charging transmission by controlling the transmission frequency or amplitude / duty of the primary coil 13. And a transmission control processor 14 for controlling the transmission of the transmission control unit 12 in accordance with the reception state.
상기 스마트폰(3)에 설치되는 무선충전 수신부(20)는, 상기 1차코일(13)에서 유도되는 전류를 수신받는 2차코일(21), 2차코일(21)에 유도된 전류를 전압으로 검출하는 전압 검출부(22), 전압 검출부(22)에서 검출된 전압을 안정화시켜 출력하는 전압안정화부(23) 및 상기 전압 검출부(22)에서 검출되는 전압에 의거하여 상기 무선충전 송신부(10)로 수신상태 정보를 송신하는 수신제어 프로세서(24)를 포함하여 구성되고, 무선충전수신부(20)의 전압안정화부(23)에서 출력된 전원은 배터리 충전부(25)를 거쳐 배터리(26)에 충전된다.The wireless charging receiver 20 installed in the smart phone 3 has a voltage induced by the secondary coil 21 and the secondary coil 21 that receives the current induced by the primary coil 13. The wireless charging transmitter 10 based on the voltage detector 22, the voltage detector 22 that stabilizes and outputs the voltage detected by the voltage detector 22, and the voltage detected by the voltage detector 22. And a reception control processor 24 for transmitting the reception state information to the battery, and the power output from the voltage stabilizer 23 of the wireless charge receiver 20 is charged to the battery 26 via the battery charger 25. do.
이와 같은 자기 유도방식의 무선충전 시스템은, 송수신장치 간의 거리가 정해진 범위 이상으로 떨어져 있으면 충전이 안되거나 충전 효율이 떨어져 충전시간이 오래 걸리고, 충전장치에서 열이 발생되는 문제가 생긴다.In such a magnetic induction wireless charging system, if the distance between the transmission and reception device is more than a predetermined range is not charged or the charging efficiency is low, it takes a long time to charge, there is a problem that heat is generated in the charging device.
따라서, 사용자로 하여금 송수신장치를 정렬이 되도록 올려 놓도록 권장하고 있는데 사용자가 정렬 여부를 직관적으로 확인하기 어려워 불편하였다.Therefore, it is recommended that the user put the transceiver to be aligned, but it is inconvenient because it is difficult for the user to intuitively check the alignment.
선행기술문헌 1 : 일본 공개특허공보 특개2010-206865호(2010.09.16.)Prior Art Document 1: Japanese Patent Laid-Open No. 2010-206865 (2010.09.16.)
선행기술문헌 2 : 등록특허공보 제10-1196552호(2012.11.01.)Prior Art Document 2: Korean Patent Publication No. 10-1196552 (2012.11.01.)
선행기술문헌 3 : 일본 공개특허공보 특개2009-089465호(2009.04.23.)Prior Art Document 3: Japanese Laid-Open Patent Publication No. 2009-089465 (2009.04.23.)
선행기술문헌 4 : 일본 공개특허공보 특개2010-130729호(2010.06.10.)Prior Art Document 4: Japanese Laid-Open Patent Publication No. 2010-130729 (2010.06.10.)
본 발명은 송신장치의 송신 코일과 수신장치의 수신코일 간의 정렬상태를 무선충전 수신장치가 내장된 스마트폰의 화면에 표시하여 사용자가 정렬상태를 직관적으로 판단할 수 있도록 함으로써 사용자가 정위치에 정렬시킬 수 있도록 한 무선충전기용 송수신장치의 정렬상태 표시방법 및 장치를 제공하기 위한 것이다. The present invention displays the alignment between the transmitting coil of the transmitting device and the receiving coil of the receiving device on the screen of the smart phone with a built-in wireless charging receiver so that the user can intuitively determine the alignment state, the user is aligned in the right position An object of the present invention is to provide a method and apparatus for displaying an alignment state of a transceiver for a wireless charger.
본 발명에 의한 무선충전 시스템의 송수신 정렬상태 표시방법은,Transmission and reception alignment status display method of the wireless charging system according to the present invention,
송신코일 또는 수신코일의 주변에 복수의 센싱코일을 설치하고, 무선충전 단말기에서 상기 복수의 센싱코일에서 검출되는 자기장신호를 입력받아 송신코일과 수신코일 간의 상대위치를 검출하고, 검출된 송신코일과 수신코일의 상대위치를 단말기의 화면상에 서로 구별되게 표시하여 무선충전 송수신 정렬상태를 표시하는 것을 특징으로 한다.A plurality of sensing coils are installed around the transmitting coil or the receiving coil, and the wireless charging terminal receives a magnetic field signal detected by the plurality of sensing coils, detects a relative position between the transmitting coil and the receiving coil, and detects the transmitting coil and The relative position of the receiving coils are displayed on the screen of the terminal to distinguish them from each other.
본 발명에 의한 일 실시예에 따른 무선충전 시스템의 송수신 정렬상태 표시방법은,Transmission and reception alignment status display method of the wireless charging system according to an embodiment of the present invention,
무선충전 패드에 1차코일이 설치되고, 스마트폰에 2차코일이 설치되어 상기 무선충전패드 위에 스마트폰을 올려놓아 배터리에 충전하는 무선충전 시스템의 송수신 정렬상태 표시방법으로서,A primary coil is installed on the wireless charging pad, and a secondary coil is installed on the smartphone. The method of displaying the transmission and reception alignment status of the wireless charging system for charging the battery by placing the smartphone on the wireless charging pad,
상기 2차코일에 복수의 센싱 코일을 설치하고, 상기 스마트폰에는 앱 어플리케이션으로 무선충전 정렬상태 표시 프로그램모듈을 설치하고,Install a plurality of sensing coils in the secondary coil, install a wireless charging alignment status display program module in the smart phone application app,
상기 무선충전 정렬상태 표시 프로그램모듈은,The wireless charging alignment status display program module,
상기 복수의 센싱코일을 통해서 1차코일에서 송신된 전력의 세기를 각기 검출하여 수신된 전력의 세기와 거리가 반비례한다는 점을 이용하여 1차코일의 위치 정보를 추출하며, 스마트폰의 화면상에 미리 설정된 센싱코일 위치에 따르는 2차코일의 위치와, 상기 1차코일의 위치를 마킹하여 송수신 정렬상태를 표시하는 것을 특징으로 한다.Detecting the intensity of the power transmitted from the primary coil through the plurality of sensing coils, extracting the location information of the primary coil by using the fact that the intensity and distance of the received power is inversely proportional, and on the screen of the smartphone The position of the secondary coil according to a preset sensing coil position and the position of the primary coil are marked to display a transmission / reception alignment state.
상기 무선충전 정렬상태 표시 프로그램모듈은,The wireless charging alignment status display program module,
3개의 센싱코일로부터 각각 수신전력의 세기를 검출하는 센싱 과정과;A sensing process of detecting the strength of the received power from each of the three sensing coils;
3개의 센싱코일과 그 가운데에 설치된 2차코일의 설치위치 관계에 의거하여 거리 및 위치에 따른 화면상의 좌표를 설정하는 좌표설정 과정과;A coordinate setting process of setting coordinates on the screen according to a distance and a position on the basis of an installation position relationship between three sensing coils and a secondary coil installed therein;
미리 설정된 좌표에 의한 상기 3개의 센싱 코일의 중심점을 원의 중심점으로 하고, 해당 센싱 코일에서 검출된 수신전력의 세기와 반비례되는 반지름을 갖는 원함수를 생성하는 거리 검출과정과;A distance detection step of generating a circle function having a center point of the three sensing coils based on preset coordinates as a center point of a circle and having a radius inversely proportional to the strength of the received power detected by the sensing coil;
상기 거리 검출과정에서 생성된 각 센싱코일의 원함수를 해석하여 3개의 원이 만나는 한점의 위치를 추출하여 1차코일의 위치로 검출하는 1차코일 위치 검출과정과;A primary coil position detection process of analyzing a circle function of each sensing coil generated in the distance detection process, extracting a position of one point where three circles meet and detecting the position of the primary coil;
상기 3개의 센싱코일의 위치정보에 의거하여 미리 설정된 2차코일의 중심점 위치를 화면상의 중앙에 설정하고, 미리 설정된 지름의 원을 수신영역으로 표시함과 아울러 상기 1차코일의 위치를 미리 설정된 1차코일 마크로 표시하는 정렬상태 표시과정을 수행하도록 이루어진 것을 특징으로 한다.Based on the position information of the three sensing coils, the position of the center point of the preset secondary coil is set at the center of the screen, and the circle of the preset diameter is displayed as the reception area, and the position of the primary coil is set to 1 in advance. Characterized in that it is made to perform the alignment state display process to display the car coil mark.
상기 각 센싱코일에서 수신된 전력의 세기가 미리 설정된 최소치 미만인 경우 정렬에러 상태를 표시하는 정렬에러 표시과정을 더 포함하는 것을 특징으로 한다.The method may further include displaying an alignment error indicating an alignment error state when the strength of the power received from each of the sensing coils is less than a predetermined minimum value.
상기 정렬상태 표시과정은,The alignment state display process,
상기 1차코일의 위치가 2차코일을 중심점으로 하는 수신영역을 벗어나는 경우 정렬 에러임을 표시하며, 1차코일의 위치가 상기 수신영역 내에 있으면 정렬 정상임을 표시하는 것을 특징으로 한다.If the position of the primary coil is outside the receiving area centered on the secondary coil, it indicates an alignment error, and if the position of the primary coil is within the receiving area, it indicates that the alignment is normal.
상기 정렬상태 표시과정은, 정렬 에러와 정렬 정상이 서로 구별되는 부저음을 더 출력하는 것을 특징으로 한다.The displaying of the alignment state may further include a buzzer sound which distinguishes the alignment error from the alignment normal.
본 발명에 의한 일실시예에 따른 무선충전 시스템의 송수신 정렬상태 표시장치는,Transmission and reception alignment status display apparatus of the wireless charging system according to an embodiment of the present invention,
1차코일을 통해 자기유도방식으로 전력을 송신하는 무선충전 송신부가 설치된 충전패드 위에 올려서 무선충전하는 스마트폰에 무선충전 수신부가 설치되는 무선충전 시스템의 송수신 정렬상태 표시장치에 있어서In the transmission and reception alignment status display apparatus of the wireless charging system is installed on the charging pad installed on the charging pad wireless charging transmitter for transmitting power in a magnetic induction method through the primary coil wireless charging system
상기 무선 충전수신부의 2차코일의 주변에 상기 무선충전 송신부의 1차코일에서 송신된 전력의 세기를 검출하기 위한 복수의 센싱코일을 설치하며, 상기 복수의 센싱코일의 수신전력세기를 각각 검출하여 출력하는 센싱코일 전압출력부를 설치하고,A plurality of sensing coils are installed around the secondary coils of the wireless charging receiver to detect the strength of the power transmitted from the primary coil of the wireless charging transmitter, and the received power strengths of the plurality of sensing coils are respectively detected. Install the sensing coil voltage output unit to output
상기 센싱코일 전압 출력부를 통해 각 센싱코일의 수신전력세기를 입력받아 수신세기와 거리의 반비례 관계를 이용하여 미리 설정된 센싱코일의 위치에 대응되는 1차코일의 위치를 검출하고, 센싱코일의 위치에 의해 설정된 2차코일의 위치와 상기 1차코일의 위치를 화면에 함께 출력하여 무선충전 정렬상태를 표시하도록 앱어플리케이션으로 설치된 무선충전 정렬상태 표시 프로그램모듈을 포함하여 구성된 것을 특징으로 한다.Receives the received power strength of each sensing coil through the sensing coil voltage output unit, and detects the position of the primary coil corresponding to the preset position of the sensing coil by using an inverse relationship between the received strength and the distance, and at the position of the sensing coil. And a wireless charging alignment status display program module installed as an app application to display the wireless charging alignment state by outputting the position of the secondary coil and the position of the primary coil on the screen together.
본 발명에 의한 다른 실시예에 따른 무선충전 시스템의 송수신 정렬상태 표시방법 및 장치는,Transmission and reception alignment state display method and apparatus of a wireless charging system according to another embodiment of the present invention,
상기 무선충전 송신부에, 1차코일 주변에 자기장 검출용 복수의 센싱코일, 상기 복수의 센싱코일의 자기장 검출신호에 의해 1차코일에 대한 2차코일의 상대위치를 검출하여 송신하는 마이크로프로세서 및 무선통신을 위한 블루투스 통신모듈)을 설치하고, 상기 스마트폰에 앱 어플리케이션으로 정렬상태표시 프로그램모듈을 설치하여, The wireless charging transmitter detects and transmits a plurality of sensing coils for magnetic field detection around the primary coil and a relative position of the secondary coil with respect to the primary coil by magnetic field detection signals of the plurality of sensing coils. Bluetooth communication module for communication) and install the alignment status display program module as an app application on the smartphone,
상기 정렬상태 표시 프로그램모듈이The alignment state display program module
상기 블루투스 통신모듈로부터 수신받은 1차코일에 대한 2차코일의 상대위치정보에 의거하여 스마트폰의 화면상에 1차코일 또는 2차코일중 어느 하나의 위치를 기준위치로 하여 기준위치에 대한 정렬영역을 표시하고, 상기 2차코일 또는 1차코일중 다른 하나의 위치를 정렬마크로 화면에 표시하여 1차코일과 2차코일의 정렬상태를 스마트폰의 화면상에 표시하는 것을 특징으로 한다.Alignment with respect to the reference position based on the position of any one of the primary coil or the secondary coil on the screen of the smartphone based on the relative position information of the secondary coil with respect to the primary coil received from the Bluetooth communication module. An area is displayed, and the position of the other one of the secondary coil or the primary coil is displayed on the screen as an alignment mark to display the alignment state of the primary coil and the secondary coil on the screen of the smartphone.
본 발명은 2차코일의 주변에 센싱코일을 설치하여 센싱코일에서 검출되는 수신전력 세기에 의해 1차코일의 위치를 검출하고, 2차코일의 중심점에 의한 수신영역과, 검출된 1차코일 위치를 화면에 함께 표시함으로써 직관적으로 무선충전 송수신 정렬상태를 인지할 수 있으며, 정렬상태가 정상이 되도록 충전 패드 위에서 스마트폰의 위치를 움직여 정상위치에 정렬시킬수 있는 효과가 있다. 무선충전 정렬상태를 쉽게 정상상태로 정렬할 수 있어서 정렬 에러로 인하여 발생될 수 있는 무선충전 에러 및 충전 시간 증가를 방지할 수 있게 된다.According to the present invention, a sensing coil is installed around the secondary coil to detect the position of the primary coil by the received power intensity detected by the sensing coil, and the receiving area by the center point of the secondary coil and the detected primary coil position. By displaying on the screen together can intuitively recognize the alignment status of the wireless charging and transmission, there is an effect that can be aligned to the normal position by moving the position of the smartphone on the charging pad so that the alignment state is normal. The wireless charging alignment can be easily aligned to a normal state, thereby preventing an increase in wireless charging error and charging time that may occur due to an alignment error.
도 1은 일반적인 무선 충전 시스템의 설명도.1 is an explanatory diagram of a general wireless charging system.
도 2는 일반적인 무선 충전 시스템의 상세 구성도.2 is a detailed configuration diagram of a general wireless charging system.
도 3은 본 발명에 의한 무선충전 정렬상태 표시기능을 갖는 무선충전 시스템의 구성도.Figure 3 is a block diagram of a wireless charging system having a wireless charging alignment status display function according to the present invention.
도 4는 본 발명에 의한 무선 충전 시스템의 센싱코일 설치 예시도이다.4 is a diagram illustrating an installation of a sensing coil of a wireless charging system according to the present invention.
도 5는 본 발명에 의한 무선 충전 시스템의 송수신 정렬 표시방법 흐름도.5 is a flowchart illustrating a method for displaying transmission and reception alignment in a wireless charging system according to the present invention.
도 6의 (가) 및 (나)는 본 발명에 의한 1차코일 위치 검출 설명도로서,6 (a) and 6 (b) are explanatory diagrams of primary coil position detection according to the present invention.
도 6의 (가)는 정중앙 정렬상태를 나타내고,6 (a) shows the center alignment state,
도 6의 (나)는 정중앙과 멀리 떨어진 상태를 나타낸다.6B shows a state far from the center.
도 7의 (가) 및 (나)는 본 발명에 의한 무선충전 시스템의 정령상태 표시화면 예시도로서,Figure 7 (a) and (b) is an illustration of the spirit state display screen of the wireless charging system according to the present invention,
도 7의 (가)는 정중앙에 정렬된 경우를 나타내고,(A) of Figure 7 shows a case aligned in the center,
도 7의 (나)는 정중앙과 멀리 떨어진 경우를 나타낸다.7B illustrates a case far from the center of gravity.
도 8은 본 발명에 의한 무선충전 시스템의 송수신 정렬상태 표시장치의 센싱코일 전압출력부의 예시도.Figure 8 is an exemplary view of the sensing coil voltage output unit of the transmission and reception alignment state display apparatus of the wireless charging system according to the present invention.
도 9는 본 발명의 다른 실시 예에 의한 무선충전 시스템의 송수신 정렬상태 표시장치의 센싱코일 설치 구성도.9 is a sensing coil installation configuration of the transmission and reception alignment state display apparatus of the wireless charging system according to another embodiment of the present invention.
이하 본 발명의 실시 예를 첨부된 도면을 참조해서 상세히 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명에 의한 무선충전 정렬상태 표시기능을 갖는 무선충전 시스템의 구성도이고, 도 4는 본 발명에 의한 무선 충전 시스템의 센싱코일 설치 예시도이다.Figure 3 is a block diagram of a wireless charging system having a wireless charging alignment status display function according to the present invention, Figure 4 is a diagram illustrating a sensing coil installation of the wireless charging system according to the present invention.
본 발명의 실시예를 설명함에 있어서, 무선충전 수신부가 설치된 무선충전 단말기는, 스마트폰을 예로하여 설명하나, 스마트폰으로 한정하는 것은 아니며, 무선충전패드 위에 올려놓아 무선충전시키기 위한 어떤 종류의 무선충전 단말기라도 본 발명을 그대로 적용할 수 있다. In describing the embodiment of the present invention, the wireless charging terminal equipped with a wireless charging receiver is described by using a smartphone as an example, but not limited to a smart phone, any kind of wireless to put on the wireless charging pad wireless charging The present invention can be applied as it is to a charging terminal.
도 3 및 도 4에 도시된 바와 같이,As shown in Figures 3 and 4,
1차코일(13)을 통해 자기유도방식으로 전력을 송신하는 무선충전 송신부(10)가 설치된 충전패드(1) 위에 올려서 무선충전하는 스마트폰(2)에 무선충전 수신부(20)가 설치되며, 상기 무선 충전수신부(20)의 2차코일(21)의 주변에 상기 무선충전 송신부(10)의 1차코일에서 송신된 전력의 세기를 검출하기 위한 복수의 센싱코일(110)을 설치하며, 상기 복수의 센싱코일(110)의 수신전력세기를 각각 검출하여 출력하는 센싱코일 전압출력부(120)를 설치하고,The wireless charging receiver 20 is installed on the smart phone 2 which is placed on the charging pad 1 provided with the wireless charging transmitter 10 for transmitting power in a magnetically inductive manner through the primary coil 13, Installing a plurality of sensing coils 110 for detecting the strength of the power transmitted from the primary coil of the wireless charging transmitter 10 around the secondary coil 21 of the wireless charging receiver 20, A sensing coil voltage output unit 120 for detecting and outputting received power strengths of the plurality of sensing coils 110, respectively,
상기 센싱코일 전압 출력부(120)를 통해 각 센싱코일의 수신전력세기를 입력받아 수신세기와 거리의 반비례 관계를 이용하여 미리 설정된 센싱코일의 위치에 대응되는 1차코일의 위치를 검출하고, 센싱코일의 위치에 의해 설정된 2차코일의 위치와 상기 1차코일의 위치를 화면에 함께 출력하여 무선충전 정렬상태를 표시하도록 앱어플리케이션으로 설치된 무선충전 정렬상태 표시 프로그램모듈(130)을 포함하여 구성됨을 특징으로 한다.The sensing coil voltage output unit 120 receives the received power strength of each sensing coil and detects the position of the primary coil corresponding to the position of the preset sensing coil using an inverse relationship between the reception strength and the distance. It is configured to include a wireless charging alignment status display program module 130 installed as an app application to display the position of the secondary coil and the position of the primary coil set by the position of the coil on the screen to display the wireless charging alignment status. It features.
이와 같이 본 발명은, 무선충전 수신부(20)의 2차코일(21)의 주변에 삼각 형태를 이루도록 배치된 적어도 3개의 센싱코일(101, 102, 103 ; 110)을 설치하며, 센싱코일(110)의 검출전압을 출력하는 센싱코일 전압출력부(120)를 설치하며,As described above, the present invention provides at least three sensing coils 101, 102, 103; 110 arranged to form a triangular shape around the secondary coil 21 of the wireless charging receiver 20, and the sensing coil 110. The sensing coil voltage output unit 120 for outputting the detected voltage of
스마트폰 본체의 메인 프로세서(120)에는, 센싱코일 전압출력부(120)의 각 센싱코일(110)의 수신전압을 분석하여 미리 설정해둔 상기 3개의 센싱코일(110)의 위치를 기준으로 수신세기와 거리가 반비례한다는 점을 이용하여 1차코일(13)의 위치를 검출하고, 2차코일에 의해 수신영역과 검출된 1차코일의 위치를 화면상에 함께 표시하는 프로그램모듈(130)을 설치하여 구성된 것이다.The main processor 120 of the smartphone body analyzes the reception voltage of each sensing coil 110 of the sensing coil voltage output unit 120 based on the positions of the three sensing coils 110 set in advance. And a program module 130 for detecting the position of the primary coil 13 by using the inversely proportional distance between the two and the secondary coil, and displaying the position of the receiving region and the detected primary coil on the screen together. It is composed.
도 5는 본 발명에 의한 무선충전 시스템의 정렬상태 표시방법 흐름도이다. 이에 도시된 바와 같이, 본 발명의 스마트폰 본체 메인 프로세서에 앱 어플리케이션으로 설치된 정렬상태 표시 프로그램 모듈(130)에 의해 1차코일의 위치를 검출하여 화면에 표시하는 것이다.5 is a flowchart illustrating an alignment state display method of a wireless charging system according to the present invention. As shown in the drawing, the alignment state display program module 130 installed as an app application on the smartphone main processor of the present invention detects the position of the primary coil and displays it on the screen.
무선 충전 패드(2)에 1차코일(13)이 설치되고, 스마트폰(3)에 2차코일(21)이 설치되어 상기 무선 충전 패드(2) 위에 스마트폰(3)을 올려놓아 배터리에 충전하는 무선충전 시스템의 송수신 정렬상태 표시방법으로서,The primary coil 13 is installed on the wireless charging pad 2, and the secondary coil 21 is installed on the smartphone 3 so that the smartphone 3 is placed on the wireless charging pad 2 and placed in the battery. As a method of displaying the transmission and reception alignment status of the wireless charging system to charge,
상기 2차코일(21)의 주변에 복수의 센싱 코일(110; 101, 102, 103))을 설치하고, 상기 스마트폰(3)에는 앱 어플리케이션으로 무선충전 정렬상태 표시 프로그램모듈(130)을 설치하며,Install a plurality of sensing coils (110; 101, 102, 103) in the vicinity of the secondary coil 21, and install the wireless charging alignment status display program module 130 as an app application on the smart phone (3) ,
상기 무선충전 정렬상태 표시 프로그램모듈(130)은,The wireless charging alignment status display program module 130,
상기 복수의 센싱코일(110)을 통해서 1차코일(13)에서 송신된 전력의 세기를 각기 검출하여 수신된 전력의 세기와 거리가 반비례한다는 점을 이용하여 1차코일(13)의 위치 정보를 추출하며, 스마트폰(3)의 화면상에 미리 설정된 센싱코일(110) 위치에 따르는 2차코일(21)의 위치와, 상기 1차코일(13)의 위치를 마킹하여 송수신 정렬상태를 표시하는 것을 특징으로 한다.By detecting the strength of the power transmitted from the primary coil 13 through the plurality of sensing coils 110, the positional information of the primary coil 13 is determined using the fact that the intensity and the distance of the received power are inversely proportional. Extracting and marking the position of the secondary coil 21 according to the preset position of the sensing coil 110 and the position of the primary coil 13 on the screen of the smartphone 3 to display the transmission / reception alignment state. It is characterized by.
상기 무선충전 정렬상태 표시 프로그램모듈에서 실행하는 본 발명에 의한 무선충전 시스템의 송수신 정렬상태 표시방법은, 도 4에 도시된 바와 같이, Transmitting and receiving alignment state display method of the wireless charging system according to the present invention executed in the wireless charge alignment state display program module, as shown in Figure 4,
3개의 센싱코일(101, 102, 103; 110)로부터 각각 수신전력의 세기를 검출하는 센싱 과정(S10)과;A sensing process (S10) of detecting the strength of the received power from the three sensing coils (101, 102, 103; 110), respectively;
3개의 센싱코일(110)과 그 가운데에 설치된 2차코일(21)의 설치 위치 관계에 의거하여 거리 및 위치에 따른 화면상의 좌표를 설정하는 좌표설정 과정(S20)과;A coordinate setting process (S20) of setting coordinates on the screen according to distances and positions based on the installation position relations of the three sensing coils 110 and the secondary coils 21 installed therein;
미리 설정된 좌표에 의한 상기 3개의 센싱 코일(110)의 각 중심점을 각 원의 중심점으로 하고, 해당 센싱 코일에서 검출된 수신전력의 세기와 반비례되는 반지름을 갖는 3개의 원함수를 생성하는 거리 검출과정(S30)과;A distance detection process of generating three circle functions having a radius inversely proportional to the strength of the received power detected by the sensing coil, with each center point of the three sensing coils 110 as preset centers according to preset coordinates. (S30);
상기 거리 검출과정(S30)에서 생성된 각 센싱코일(110)의 원함수를 해석하여 3개의 원이 만나는 한점의 위치를 추출하여 1차코일(13)의 위치로 검출하는 1차코일 위치 검출과정(S40)과;Primary coil position detection process for detecting the position of the primary coil 13 by extracting the position of one point where the three circles meet by analyzing the original function of each sensing coil 110 generated in the distance detection process (S30) (S40);
상기 3개의 센싱코일(110)의 위치정보에 의거하여 미리 설정된 2차코일(21)의 중심점 위치를 화면상의 중앙에 설정하고, 미리 설정된 지름의 원을 수신영역(105)으로 표시함과 아울러 상기 1차코일(13)의 위치를 미리 설정된 1차코일 마크(104)로 표시하는 정렬상태 표시과정(S50)을 수행하도록 이루어진 것을 특징으로 한다.Based on the position information of the three sensing coils 110, the position of the center point of the secondary coil 21, which is set in advance, is set at the center of the screen, and a circle having a predetermined diameter is displayed as the reception area 105. Characterized in that the alignment state display process (S50) for displaying the position of the primary coil 13 to the predetermined primary coil mark 104 is characterized in that it is made.
상기 각 센싱코일(110)에서 수신된 전력의 세기가 미리 설정된 최소치 미만인 경우 정렬에러 상태를 표시하는 정렬에러 표시과정(S60)을 더 포함하는 것을 특징으로 한다.The method may further include an alignment error displaying process (S60) indicating an alignment error state when the power received from each sensing coil 110 is less than a preset minimum value.
상기 정렬상태 표시과정(S50)은,The alignment state display process (S50),
상기 1차코일(13)의 위치에 따른 1차코일 마크(104)가 2차코일(21)을 중심점으로 하는 수신영역(105)을 벗어나는 경우 정렬 에러임을 표시하며, 1차코일(13)의 위치에따른 1차코일 마크(104)가 상기 수신영역(105) 내에 있으면 정렬 정상임을 표시하는 것을 특징으로 한다.If the primary coil mark 104 according to the position of the primary coil 13 deviates from the receiving region 105 having the secondary coil 21 as a center point, it indicates an alignment error, and indicates that the primary coil 13 If the primary coil mark 104 according to the position is in the receiving region 105, it indicates that the alignment is normal.
상기 정렬상태 표시과정(S50)은, 정렬 에러와 정렬 정상이 서로 구별되는 부저음을 더 출력하는 것을 특징으로 한다.The alignment state display process S50 may further output a buzzer sound in which an alignment error and an alignment normal are distinguished from each other.
본 발명은, 무선충전 시스템으로서 스마트 폰(3)을 예로 설명하였으나, 이에 한정되는 것은 아니며, 디스플레이 화면이 구비된 이동단말기에 모두 동일하게 적용될 수 있다. 무선충전 송신부(10)와 무선충전 수신부(20)의 구성도 일반적인 개요를 나타낸 것으로서 반드시 이에 한정하는 것은 아니며, 본 발명은 무선충전 수신부의 2차코일 주면에 적어도 3개의 센싱코일을 설치하여 1차코일로부터 송신된 유도전류를 수신받아 수신전력 세기를 검출하고, 이 수신전력 세기에 의거하여 1차코일의 위치를 검출하며, 이를 화면에 표시하도록 하는 것이다.Although the present invention has described the smart phone 3 as a wireless charging system as an example, the present invention is not limited thereto, and the present invention may be equally applied to all mobile terminals having a display screen. The configuration of the wireless charging transmitter 10 and the wireless charging receiver 20 also shows a general outline, but is not necessarily limited thereto, and the present invention provides a primary by installing at least three sensing coils on a main surface of the secondary coil of the wireless charging receiver. Receiving the induced current transmitted from the coil to detect the received power strength, based on the received power strength to detect the position of the primary coil and to display it on the screen.
스마트폰(3)을 충전 패드(2)의 위에 올려놓게 되면, 센싱코일(110)은 1차코일(13)에서 송신한 유도전류에 의해 전압수신이 가능해진다. 3개의 센싱코일(110)로부터 각각의 수신전력 세기를 검출하는 수신세기 검출과전(S10)을 수행한다. 수신세기 검출과정(S10)에서 1개 이상의 센싱코일로부터 전력을 검출하게 되면, 본 발명에 의한 무선충전 정렬상태 표시제어를 시작한다. 즉, 스마트폰(3)이 충전패드(2)와 멀리 떨어진 상태에서는 정렬상태 표시제어는 동작되지 아니하며, 스마트폰(3)을 충전패드(2)의 위에 올려놓아 센싱코일(110)로부터 수신전력세기가 검출되기 시작하면 정렬표시제어를 시작한다. 여기서 수신전력세기를 검출하는 방법으로는 전압검출을 예로 한다.When the smartphone 3 is placed on the charging pad 2, the sensing coil 110 may receive voltage by the induced current transmitted from the primary coil 13. Receiving strength detection (S10) is performed to detect the respective receiving power strengths from the three sensing coils 110. When the power is detected from the one or more sensing coils in the reception strength detection process S10, the wireless charge alignment status display control according to the present invention is started. That is, when the smart phone 3 is far from the charging pad 2, the alignment state display control is not operated. The smart phone 3 is placed on the charging pad 2 to receive power from the sensing coil 110. When the intensity starts to be detected, alignment display control starts. Here, the voltage detection is an example of a method of detecting the received power strength.
그리고, 적어도 3개의 센싱코일(110)이 설치된 상태에서 수신세기를 검출하고, 각 센싱코일의 수신전력이 미리 설정된 최소치보다 낮으면, 정렬에러 표시과정(S60)을 수행한다. 즉, 충전패드(2)의 중앙에 1차코일이 설치된 경우, 충전패드(2)의 가장자리에 걸치도록 스마트폰(3)을 올려놓게 되면, 1차코일의 위치를 검출할 수 없으므로 정렬에러 표시를 한다.Then, the reception strength is detected in a state in which at least three sensing coils 110 are installed, and if the reception power of each sensing coil is lower than a predetermined minimum value, an alignment error display process (S60) is performed. That is, when the primary coil is installed in the center of the charging pad 2, when the smart phone 3 is placed on the edge of the charging pad 2, the position of the primary coil cannot be detected. Do
각 센싱코일의 수신 전력세기가 미리 설정된 최소치 이상인 경우, 3개의 센싱코일과 2차코일의 위치 계에 따라 좌표를 설정하는 좌표 설정과정(S20)을 수행한다. 좌표설정은 정렬상태를 표시할 화면상의 좌표를 설정하는 것으로서 무선충전 시스템의 모델에 따라 센싱코일간의 거리 및 위치나 배치 상태가 달라질 수 있고, 2차코일과의 관계도 달라질 수 있다. 따라서, 무선 충전 시스템의 모델별로 미리 디폴트 값으로 3개의 센싱코일 중심점 위치좌표와, 2차코일의 중심점 위치 좌표를 각각 설정하여 둔다. 그리고 앱어플리케이션을 다운로드 받아 설치할때 해당 모델을 선택하게 함으로써, 자동으로 해당 모델의 타입에 따르는 센싱코일의 위치 및 2차코일의 위치 좌표를 설정한다.If the received power strength of each sensing coil is greater than or equal to a preset minimum value, a coordinate setting process S20 of setting coordinates according to the position systems of the three sensing coils and the secondary coil is performed. Coordinate setting is to set the coordinates on the screen to display the alignment state, depending on the model of the wireless charging system, the distance and position or arrangement of the sensing coil days may vary, and the relationship with the secondary coil may also vary. Therefore, three sensing coil center point position coordinates and the center point position coordinates of the secondary coil are set as default values in advance for each model of the wireless charging system. When the app application is downloaded and installed, the corresponding model is selected to automatically set the position of the sensing coil and the position coordinate of the secondary coil according to the type of the model.
도 6의 (가) 및 (나)는 본 발명에 의한 1차코일 위치 검출 설명도로서, 도 6의 (가)는 정중앙 정렬상태를 나타내고, 도 6의 (나)는 정중앙과 멀리 떨어진 상태를 나타낸다. 6 (a) and 6 (b) are explanatory views of the primary coil position detection according to the present invention. FIG. 6 (a) shows the center alignment state, and FIG. 6 (b) shows the state away from the center. Indicates.
3개의 센싱코일의 위치좌표를 설정한 후, 상기 수신세기 검출과정(S10)에서 검출된 각 센싱코일의 수신세기에 반비례하는 반지름을 갖는 원함수를 각각 생성한다. 이는 수학식에 의해 중심점과 반지름을 알고 있는 원 함수를 생성한다. 예를들어, 최대 수신세기가 5V인 경우, 원의 반지름을 1㎝로 설정하고, 수신세기가 3V이면, 원의 반지름은 3㎝가 되며, 수신세기가 1V이면 원의 반지름은 5㎝가 되게 한다. 이와 같은 설정에 의해 수신세기에 반비례하는 원의 반지름을 갖도록 원함수를 생성하는 것이다. After setting the position coordinates of the three sensing coils, each original function having a radius inversely proportional to the reception strength of each sensing coil detected in the reception strength detection process S10 is generated. This creates a circle function that knows the center point and radius by the equation. For example, if the maximum reception strength is 5V, set the radius of the circle to 1cm, if the reception strength is 3V, the radius of the circle is 3cm, and if the reception strength is 1V, the radius of the circle will be 5cm. do. By this setting, the original function is generated to have a radius of the circle inversely proportional to the reception strength.
따라서, 도 6의 (나)와 같은 경우, 수신코일 A(101)의 원이 가장 작은데 이는 1차코일(13)과 센싱코일 A(101)의 거리가 가장 가까운 상태이고, 수신코일 B(102)는 중간이고, 수신코일 C(103)는 정중앙(3개의 센싱코일의 정중앙)에서 가장 먼 거리로 떨어진 상태를 나타낸다.Therefore, as shown in (b) of FIG. 6, the circle of the receiving coil A 101 is the smallest, which is the state where the distance between the primary coil 13 and the sensing coil A 101 is closest, and the receiving coil B 102 is closest. ) Is in the middle, and the receiving coil C 103 represents a state farthest from the center (the center of the three sensing coils).
3개의 센싱코일(110)로부터 검출되는 수신세기에 의해 3개의 원 함수를 생성하게 되면, 3개의 원함수를 해석하여 3개의 원이 만나는 한 점을 1차코일 위치로 검출하는 1차코일 위치검출 과정(S40)을 수행한다. 이때 1차코일의 위치는 센싱코일들의 좌표에 대응되는 위치좌표로서 검출된다.When three circle functions are generated by the reception strengths detected from the three sensing coils 110, primary coil positions are detected by detecting three point functions as primary coil positions by analyzing three circle functions. Process S40 is performed. At this time, the position of the primary coil is detected as a position coordinate corresponding to the coordinates of the sensing coils.
화면의 표시는 2차코일의 좌표를 화면의 중앙 중심점으로 하고 미리 설정된 지름의 원을 수신영역(105)으로 표시하며, 상기 검출된 1차코일의 위치를 1차코일 마크(104)로서 화면에 함께 표시한다.The display of the screen uses the coordinates of the secondary coil as the center point of the screen, and displays a circle having a predetermined diameter as the receiving area 105, and displays the detected position of the primary coil as the primary coil mark 104 on the screen. Mark together.
도 7의 (가) 및 (나)는 본 발명에 의한 무선충전 시스템의 정령상태 표시화면 예시도로서, 도 7의 (가)는 정중앙에 정렬된 경우를 나타내고, 도 7의 (나)는 정중앙과 멀리 떨어진 경우를 나타낸다.Figure 7 (a) and (b) is an exemplary view of the spirit state display screen of the wireless charging system according to the present invention, Figure 7 (a) shows a case aligned in the center, Figure 7 (b) is the center of the center Indicates a case away from
본 발명에서는 화면의 정중앙에 2차코일(21)의 설정위치를 매칭시키고, 미리 설정된 지름의 원을 수신영역(105)으로 표시하며, 검출된 1차코일의 위치를 1차코일 마크(104)로서 화면에 표시한다. 따라서 수신영역(105) 속에 1차코일 마크(104)가 들어가게 되면 정렬상태 정상으로 표시하며, 도 6의 (나)와 같이 수신영역(105)을 벗어난 위치에 1차코일 마크(104)가 표시되면 정렬상태 에러임을 표시한다. 이때 부저음으로 구분하여 정상과 에러상태를 함께 알리도록 할 수 있다.In the present invention, the setting position of the secondary coil 21 is matched to the center of the screen, a circle of a predetermined diameter is displayed as the receiving area 105, and the position of the detected primary coil is indicated by the primary coil mark 104. Display on the screen. Therefore, when the primary coil mark 104 enters the reception area 105, the alignment state is displayed as normal, and the primary coil mark 104 is displayed at the position outside the reception area 105 as shown in FIG. Indicates an alignment error. At this time, it can be divided into buzzer sound to inform the normal and error status.
또한 도면에서 부호표시는 하지 않았으나, 정중앙 포인트를 쉽게 인지하도록 정중앙에서 만나는 수평 및 수직 선을 표시하고, 1차코일 마크(104)를 중심으로하는 1차코일 송신영역도 가상선으로 원을 표시하여 정렬상태를 직관적으로 쉽게 인지할 수 있도록 한다.In addition, although not shown in the drawings, the horizontal and vertical lines meeting at the center are displayed to easily recognize the center point, and the primary coil transmission area centering on the primary coil mark 104 also displays a circle as a virtual line. Intuitively and easily recognize the alignment.
따라서, 본 발명에 의하면, 스마트폰의 화면상에 무선충전 정렬상태가 표시되므로, 정상정렬상태가 되도록 쉽게 위치를 이동시켜 정렬상태를 맞출 수 있게 되고, 정렬상태를 쉽게 맞출 수 있어서 무선 충전 효율을 최상의 효율로 정렬시킬 수 있고, 정렬 에러로 인한 충전시간을 증가를 방지할 수 있게 된다.Therefore, according to the present invention, since the wireless charging alignment state is displayed on the screen of the smartphone, the alignment state can be easily adjusted by shifting the position so as to be in a normal alignment state, and the alignment state can be easily adjusted to improve wireless charging efficiency. It is possible to align with the best efficiency and to prevent the increase of the charging time due to the alignment error.
도 8은 본 발명에 의한 무선충전 시스템의 송수신 정렬상태 표시장치의 센싱코일 전압출력부의 예시도로서, 이에 도시된 바와 같이, 각 센싱코일(101, 102, 103)별로 각각 공진코일과 공진 콘덴서 및 리액터(L101, C101, L1),((L102, C102, L2),(L103, C103, L3)로 이루어져 서로 다른 공진주파수(fa, fb, fc)로 수신세기를 검출하는 3개의 공진회로(121,122,123)와, 상기 3개의 공진회로(121, 122, 123)의 각 출력을 저항(R1,R2,R3)를 통해 공통으로 입력받아 변조시켜 스마트폰의 A/D 입력포트로 출력하는 변조부(124)로 구성됨을 특징으로 한다.8 is an exemplary view illustrating a sensing coil voltage output unit of a transmission / reception alignment state display device of a wireless charging system according to the present invention. As shown in FIG. Three resonant circuits 121, 122, 123 consisting of reactors L101, C101, L1, ((L102, C102, L2), (L103, C103, L3) for detecting the reception intensity at different resonant frequencies fa, fb, and fc. ) And a modulator 124 for receiving and modulating the respective outputs of the three resonant circuits 121, 122, and 123 through the resistors R1, R2, and R3, and outputting them to the A / D input port of the smartphone. It is characterized by consisting of).
무선충전 수신부는, 스마트폰 등의 단말기에 설치되므로, 사이즈에 대한 제약이 많이 있다. 이에 따라 본 발명에서는 센서코일(101, 102, 103)로부터 수신세기를 검출하기 위한 센싱코일 전압출력부(120)의 구성을 도 8에 도시된 바와 같이 공진회로(121, 122, 123)와, 변조부(124)로 구성하여 3개의 센싱코일 감지신호를 스마트폰의 하나의 A/D입력포트로 입력하게 함으로써 회로설치 사이즈를 최소화한다.Since the wireless charging receiver is installed in a terminal such as a smartphone, there are many restrictions on the size. Accordingly, in the present invention, the configuration of the sensing coil voltage output unit 120 for detecting the reception strength from the sensor coils 101, 102, and 103 is shown in FIG. The modulation unit 124 is configured to input three sensing coil detection signals to one A / D input port of the smartphone, thereby minimizing the circuit installation size.
각 센서코일(101, 102, 103)에 연결되는 공진회로(121, 122, 123)는 각각의 공진 주파수가 다르게 공진코일의 L과 공진콘덴서의 C값을 다르게 설계하여 서로 다른 공진주파수 fa, fb, fc로 공진되게 구성하며, 저항 R1, R2, R3를 거쳐 공통으로 변조부(124)에 입력시켜 3가지의 다른 공진주파수를 갖는 신호를 혼합 변조시켜 스마트폰의 A/D 입력포트로 출력하며, 스마트폰의 정렬상태 표시프로그램모듈(130)에서는 수신된 변조신호를 상기 공진 주파수에 대응시켜 3개의 신호로 복원하고, 3개의 신호 즉, 3개의 센싱코일의 수신전압의 세기에 의거하여 1차코일 즉, 송신코일의 위치를 검출할 수 있다.The resonant circuits 121, 122, and 123 connected to the respective sensor coils 101, 102, and 103 have different resonance frequencies fa and fb by designing L of the resonant coil and C value of the resonant capacitor differently. , fc is configured to be resonant, and is commonly input to the modulator 124 through the resistors R1, R2, and R3, and then modulated and mixed with signals having three different resonance frequencies to the A / D input port of the smartphone. In the smart phone alignment state display program module 130, the received modulated signal is restored to three signals corresponding to the resonance frequency, and based on the strength of the received voltage of the three signals, that is, three sensing coils, The position of the coil, i.e., the transmission coil, can be detected.
따라서, 도 8과 같은 공진 및 변조기법으로 센싱회로를 구성하게 되면, NFC 안테나의 FPCB에 모두 형성할 수 있고, 사이즈 및 본체와의 연결 복잡도를 획기적으로 줄 일 수 있다. Therefore, when the sensing circuit is configured by the resonance and modulation method as shown in FIG. 8, both the FPCBs of the NFC antenna can be formed, and the size and connection complexity with the main body can be significantly reduced.
도 9는 본 발명의 다른 실시 예에 의한 무선충전 시스템의 송수신 정렬상태 표시장치의 센싱코일 설치 구성도로서, 이에 도시된 바와 같이,9 is a sensing coil installation configuration diagram of a transmission / reception alignment state display apparatus of a wireless charging system according to another embodiment of the present invention.
충전패드 내에 무선충전 송신부(10)가 설치되고, 스마트폰에 무선충전 수신부(20)가 설치되어 무선 충전하는 무선충전시스템의 정렬상태 표시장치에 있어서, In the wireless charging transmitter 10 is installed in the charging pad, the wireless charging receiver 20 is installed in the smart phone in the alignment state display device of the wireless charging system for wireless charging,
상기 무선충전 송신부(10)의 1차코일(13)의 주변 설치되는 복수의 자기장 검출용 센싱코일(210)과; 상기 복수의 센싱코일(210)로부터 각각의 자기장 신호를 검출하는 자기장신호 검출부(220)와, 상기 자기장신호 검출부(220)로부터 각 센싱코일(210)들의 검출신호를 입력받아 1차코일에 대한 2차코일의 상대 위치정보를 검출하는 마이크로프로세서(230)와; 상기 마이크로프로세서(230)의 제어에 의해 상기 1차코일의 위치에 따른 2차코일의 상태 위치정보를 무선송신하는 블루투스 통신모듈(240)을 포함하여 구성하고, A plurality of magnetic field detecting coils 210 installed around the primary coil 13 of the wireless charging transmitter 10; The magnetic field signal detector 220 detects each magnetic field signal from the plurality of sensing coils 210, and the detection signals of the sensing coils 210 are input from the magnetic field signal detector 220. A microprocessor 230 for detecting relative position information of the car coil; And a Bluetooth communication module 240 for wirelessly transmitting state position information of the secondary coil according to the position of the primary coil under the control of the microprocessor 230,
상기 블루투스모듈(240)로부터 송신되는 1차코일과 2차코일의 상대 위치정보를 수신받아 1차코일 또는 2차코일의 위치를 화면상의 정중앙 고정위치로, 2차코일 또는 1차코일의 위치를 상기 고정위치에 대한 상대 위치로 표시하여 무선 충전 정렬상태를 표시하는 정렬상태 표시 프로그램모듈(130')을 상기 무선충전 수신부(20)가 설치된 스마트폰에 설치하여 구성함에 특징이 있다.Receiving the relative position information of the primary coil and the secondary coil transmitted from the Bluetooth module 240, the position of the primary coil or the secondary coil to the fixed center position on the screen, the position of the secondary coil or primary coil Characterized in that the configuration state display program module 130 'for displaying the wireless charging alignment state by displaying the relative position relative to the fixed position installed on the smart phone installed the wireless charging receiver 20.
이와 같은 본 발명의 다른 실시예는, 송신코일 즉, 1차코일(13)에 복수의 센싱코일(210)을 설치하며, 복수의 센싱코일(210)들은 무선충전 정렬상태에 따른 2차코일(21)과의 거리에 의해 각기 검출되는 자기장의 세기가 달라진다. 그러므로 마이크로프로세서(230)는, 상기 자기장신호 검출부(220)를 통해서 각 센싱코일(210)들의 자기장 검출신호를 입력받아 2차코일(21)의 상대 위치를 검출한다. 1차코일(13)과 복수의 센싱코일(210)들의 위치는 고정되어 있으므로, 프로그램상에서 고정 위치를 설정하고, 각 센싱코일의 위치에서 검출된 자기장 신호의 세기를 비교분석하면, 2차코일의 상대적 위치를 검출할 수 있게 된다.According to another embodiment of the present invention, a plurality of sensing coils 210 are installed in a transmission coil, that is, the primary coil 13, and the plurality of sensing coils 210 are secondary coils according to a wireless charging alignment state. The intensity of the magnetic field to be detected differs depending on the distance from 21). Therefore, the microprocessor 230 detects the relative position of the secondary coil 21 by receiving the magnetic field detection signal of each of the sensing coils 210 through the magnetic field signal detector 220. Since the positions of the primary coil 13 and the plurality of sensing coils 210 are fixed, if a fixed position is set in the program and the strengths of the magnetic field signals detected at the positions of the sensing coils are compared and analyzed, The relative position can be detected.
마이크로프로세서(230)에서 검출된 1차코일과 2차코일의 상대적 위치정보는 불루투스 통신모듈(240)을 통해서 스마트폰으로 송신하고, 스마트폰은 내장된 블루투스 통신모듈을 통해서 상기 무선충전 송신부(10)에 설치된 블루투스 통신모듈(240)로부터 1차코일과 2차코일의 상대 위치정보(벡터값으로 표현하여 두점간의 거리 및 방향을 알 수 있는 상대위치정보)를 수신받고, 수신받은 1차코일과 2차코일의 상대 위치정보에 의거하여 화면상에 1차코일 또는 2차코일중 어느 하나의 위치를 화면 정중앙에 고정 위치로 표시하면서 고정위치에 대하여 수신영역을 표시하고, 고정위치에 표시한 1차코일 또는 2차코일에 대응된 2차코일 또는 1차코일중 하나를 가변위치로서 화면에 표시한다. 즉, 도 7의 (가) 및 (나)와 동일한 형태로 화면에 표시할 수 있다.The relative position information of the primary coil and the secondary coil detected by the microprocessor 230 is transmitted to the smartphone through the Bluetooth communication module 240, the smartphone via the built-in Bluetooth communication module the wireless charging transmitter 10 Receiving the relative position information (relative position information for knowing the distance and direction between two points by expressing it as a vector value) of the primary coil and the secondary coil from the Bluetooth communication module 240 installed in the Based on the relative position information of the secondary coil, one of the primary coil or the secondary coil is displayed on the screen as the fixed position in the center of the screen, and the receiving area is displayed for the fixed position and 1 is displayed on the fixed position. One of the secondary coil or the primary coil corresponding to the secondary coil or the secondary coil is displayed on the screen as a variable position. That is, it can be displayed on the screen in the same form as (a) and (b) of FIG.
따라서, 송신코일 즉, 1차코일(13)이 설치된 무선충전 송신부(10)에 복수의 센싱코일(21)과, 자기장신호 검출부(220), 마이크로프로세서(230) 및 블루투스 통신모듈(240)을 설치하는 것이므로 사이즈 및 복잡도와는 상관없이 설치할 수 있고, 무선충전 수신부(20)가 설치된 단말기 즉, 스마트폰에는 블루투스 통신모듈이 기본적으로 내장되어 있으므로, 앱 어플리케이션으로 다운받아 설치할 수 있는 정렬상태 표시 프로그램모듈(130')만을 설치하면 된다. 즉, 스마트폰에 앱 어플리케이션만 설치하면 되므로 단말기의 사이즈나 기구적 복잡도에는 영향을 미치지 않는다.Accordingly, the plurality of sensing coils 21, the magnetic field signal detection unit 220, the microprocessor 230, and the Bluetooth communication module 240 are connected to the transmission coil, that is, the wireless charging transmitter 10 in which the primary coil 13 is installed. Since it can be installed regardless of the size and complexity, the wireless charging receiver 20 is installed, that is, since the Bluetooth communication module is basically built in the terminal, the smartphone, the alignment status display program that can be downloaded and installed as an app application Only the module 130 'needs to be installed. That is, since only the app application is installed on the smartphone, it does not affect the size or mechanical complexity of the terminal.

Claims (12)

  1. 무선충전 시스템의 송수신 정렬상태 표시방법에 있어서,In the transmission and reception alignment status display method of the wireless charging system,
    송신코일 또는 수신코일의 주변에 복수의 센싱코일을 설치하고, 무선충전 단말기에서 상기 복수의 센싱코일에서 검출되는 자기장신호를 입력받아 송신코일과 수신코일 간의 상대위치를 검출하고, 검출된 송신코일과 수신코일의 상대위치를 단말기의 화면상에 서로 구별되게 표시하여 무선충전 송수신 정렬상태를 표시하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.A plurality of sensing coils are installed around the transmitting coil or the receiving coil, and the wireless charging terminal receives a magnetic field signal detected by the plurality of sensing coils, detects a relative position between the transmitting coil and the receiving coil, and detects the transmitting coil and Transmitting and receiving alignment status display method of a wireless charging system, characterized in that to display the relative position of the receiving coil to distinguish the mutually on the screen of the terminal to display the wireless charging transmission and reception alignment status.
  2. 무선 충전 패드(2)에 1차코일(13)이 설치되고, 스마트폰(3)에 2차코일(21)이 설치되어 상기 무선 충전 패드(2) 위에 스마트폰(3)을 올려놓아 배터리에 충전하는 무선충전 시스템의 송수신 정렬상태 표시방법으로서,The primary coil 13 is installed on the wireless charging pad 2, and the secondary coil 21 is installed on the smartphone 3 so that the smartphone 3 is placed on the wireless charging pad 2 and placed in the battery. As a method of displaying the transmission and reception alignment status of the wireless charging system to charge,
    상기 2차코일(21)의 주변에 복수의 센싱 코일(110; 101, 102, 103))을 설치하고, 상기 스마트폰(3)에는 앱 어플리케이션으로 무선충전 정렬상태 표시 프로그램모듈(130)을 설치하며,Install a plurality of sensing coils (110; 101, 102, 103) in the vicinity of the secondary coil 21, and install the wireless charging alignment status display program module 130 as an app application on the smart phone (3) ,
    상기 무선충전 정렬상태 표시 프로그램모듈(130)은,The wireless charging alignment status display program module 130,
    상기 복수의 센싱코일(110)을 통해서 1차코일(13)에서 송신된 전력의 세기를 각기 검출하여 수신된 전력의 세기와 거리가 반비례한다는 점을 이용하여 1차코일(13)의 위치 정보를, 미리 설정된 센싱코일의 위치에 대응된 1차코일의 위치정보로서 추출하며, 스마트폰(3)의 화면상에 미리 설정된 센싱코일(110) 위치에 따르는 2차코일(21)의 위치와, 상기 1차코일(13)의 위치를 마킹하여 송수신 정렬상태를 표시하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.By detecting the strength of the power transmitted from the primary coil 13 through the plurality of sensing coils 110, the positional information of the primary coil 13 is determined using the fact that the intensity and the distance of the received power are inversely proportional. Extracting the position information of the primary coil corresponding to the position of the preset sensing coil, the position of the secondary coil 21 according to the position of the preset sensing coil 110 on the screen of the smart phone 3, and Transmitting and receiving alignment status display method of the wireless charging system, characterized in that for indicating the position of the primary coil (13) to indicate the transmission and reception alignment.
  3. 제 2 항에 있어서,The method of claim 2,
    상기 무선충전 정렬상태 표시 프로그램모듈에서 실행하는 무선충전 시스템의 송수신 정렬상태 표시방법은,Transmitting and receiving alignment status display method of the wireless charging system executed by the wireless charging alignment status display program module,
    3개의 센싱코일(101, 102, 103; 110)로부터 각각 수신전력의 세기를 검출하는 센싱 과정(S10)과;A sensing process (S10) of detecting the strength of the received power from the three sensing coils (101, 102, 103; 110), respectively;
    3개의 센싱코일(110)과 그 가운데에 설치된 2차코일(21)의 설치 위치 관계에 의거하여 거리 및 위치에 따른 화면상의 좌표를 설정하는 좌표설정 과정(S20)과;A coordinate setting process (S20) of setting coordinates on the screen according to distances and positions based on the installation position relations of the three sensing coils 110 and the secondary coils 21 installed therein;
    미리 설정된 좌표에 의한 상기 3개의 센싱 코일(110)의 각 중심점을 각 원의 중심점으로 하고, 해당 센싱 코일에서 검출된 수신전력의 세기와 반비례되는 반지름을 갖는 3개의 원함수를 생성하는 거리 검출과정(S30)과;A distance detection process of generating three circle functions having a radius inversely proportional to the strength of the received power detected by the sensing coil, with each center point of the three sensing coils 110 as preset centers according to preset coordinates. (S30);
    상기 거리 검출과정(S30)에서 생성된 각 센싱코일(110)의 원함수를 해석하여 3개의 원이 만나는 한점의 위치를 추출하여 1차코일(13)의 위치로 검출하는 1차코일 위치 검출과정(S40)과;Primary coil position detection process for detecting the position of the primary coil 13 by extracting the position of one point where the three circles meet by analyzing the original function of each sensing coil 110 generated in the distance detection process (S30) (S40);
    상기 3개의 센싱코일(110)의 위치정보에 의거하여 미리 설정된 2차코일(21)의 중심점 위치를 화면상의 중앙에 설정하고, 미리 설정된 지름의 원을 수신영역(105)으로 표시함과 아울러 상기 1차코일(13)의 위치를 미리 설정된 1차코일 마크(104)로 표시하는 정렬상태 표시과정(S50)을 수행하도록 이루어진 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.Based on the position information of the three sensing coils 110, the position of the center point of the secondary coil 21, which is set in advance, is set at the center of the screen, and a circle having a predetermined diameter is displayed as the reception area 105. Transmitting and receiving alignment state display method of the wireless charging system, characterized in that the configuration to perform the alignment state display process (S50) for displaying the position of the primary coil 13 to the predetermined primary coil mark (104).
  4. 제 3 항에 있어서,The method of claim 3, wherein
    상기 각 센싱코일(110)에서 수신된 전력의 세기가 미리 설정된 최소치 미만인 경우 정렬에러 상태를 표시하는 정렬에러 표시과정(S60)을 더 포함하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.Transmitting and receiving alignment status display method of the wireless charging system, characterized in that it further comprises an alignment error display step (S60) for displaying the alignment error status when the strength of the power received from each of the sensing coils 110 is less than a predetermined minimum value.
  5. 제 3 항에 있어서, 상기 정렬상태 표시과정(S50)은,The method of claim 3, wherein the alignment state display process (S50),
    상기 1차코일(13)의 위치에 따른 1차코일 마크(104)가 2차코일(21)을 중심점으로 하는 수신영역(105)을 벗어나는 경우 정렬 에러임을 표시하며, 1차코일(13)의 위치에따른 1차코일 마크(104)가 상기 수신영역(105) 내에 있으면 정렬 정상임을 표시하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.If the primary coil mark 104 according to the position of the primary coil 13 deviates from the receiving region 105 having the secondary coil 21 as a center point, it indicates an alignment error, and indicates that the primary coil 13 Transmitting and receiving alignment status display method of the wireless charging system, characterized in that the primary coil mark (104) according to the position indicating that the alignment is normal when in the receiving area (105).
  6. 제 3 항에 있어서, 상기 정렬상태 표시과정(S50)은,The method of claim 3, wherein the alignment state display process (S50),
    정렬 에러와 정렬 정상이 서로 구별되는 부저음을 더 출력하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.Transmitting and receiving alignment status display method of a wireless charging system, characterized in that for further outputting a buzzer sound is different from the alignment error and the normal alignment.
  7. 제 3 항에 있어서, 무선 충전 시스템의 모델별로 미리 디폴트 값으로 3개의 센싱코일 중심점 위치좌표와, 2차코일의 중심점 위치 좌표를 각각 설정하여 두고, 앱어플리케이션을 다운로드 받아 설치할 때 해당 스마트폰 무선충전 시스템의 모델을 선택하여 자동으로 해당 모델의 타입에 따르는 센싱코일의 위치 및 2차코일의 위치 좌표를 설정하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.The wireless charging system according to claim 3, wherein the three sensing coil center point coordinates and the center point position coordinates of the secondary coils are set as default values in advance for each model of the wireless charging system. Transmitting and receiving alignment status display method of a wireless charging system, characterized in that for selecting the model of the system automatically set the position of the sensing coil and the position of the secondary coil according to the type of the model.
  8. 1차코일(13)을 통해 자기유도방식으로 전력을 송신하는 무선충전 송신부(10)가 설치된 충전패드(1) 위에 올려서 무선충전하는 스마트폰(2)에 무선충전 수신부(20)가 설치되는 무선충전 시스템의 송수신 정렬상태 표시장치는,The wireless charging receiver 20 is installed on the smartphone 2 that is wirelessly charged on the charging pad 1 provided with the wireless charging transmitter 10 that transmits power in a magnetically inductive manner through the primary coil 13. Sending and receiving alignment status display device of the charging system,
    상기 무선 충전수신부(20)의 2차코일(21)의 주변에 상기 무선충전 송신부(10)의 1차코일에서 송신된 전력의 세기를 검출하기 위한 복수의 센싱코일(110)을 설치하며,Installing a plurality of sensing coils 110 for detecting the intensity of the power transmitted from the primary coil of the wireless charging transmitter 10 around the secondary coil 21 of the wireless charging receiver 20,
    상기 복수의 센싱코일(110)의 수신전력세기를 각각 검출하여 출력하는 센싱코일 전압출력부(120)를 설치하고,A sensing coil voltage output unit 120 for detecting and outputting the received power strengths of the plurality of sensing coils 110, respectively,
    상기 센싱코일 전압 출력부(120)를 통해 각 센싱코일의 수신전력세기를 입력받아 수신세기와 거리의 반비례 관계를 이용하여 미리 설정된 센싱코일의 위치에 대응되는 1차코일의 위치를 검출하고, 센싱코일의 위치에 의해 설정된 2차코일의 위치와 상기 1차코일의 위치를 화면에 함께 출력하여 무선충전 정렬상태를 표시하도록 앱어플리케이션으로 설치된 무선충전 정렬상태 표시 프로그램모듈(130)을 포함하여 구성된 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시장치.The sensing coil voltage output unit 120 receives the received power strength of each sensing coil and detects the position of the primary coil corresponding to the position of the preset sensing coil using an inverse relationship between the reception strength and the distance. It is configured to include a wireless charging alignment status display program module 130 installed as an app application to display the position of the secondary coil and the position of the primary coil set by the position of the coil on the screen to display the wireless charging alignment status. Transmitting and receiving alignment status display device of a wireless charging system.
  9. 제 8 항에 있어서, 상기 센싱코일은,The method of claim 8, wherein the sensing coil,
    무선충전 수신부(20)의 2차코일(21)의 주변에 삼각 형태를 이루도록 배치된 적어도 3개의 센싱코일(101, 102, 103 ; 110)을 설치하여 구성된 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시장치.Transceiving alignment of the wireless charging system, characterized in that at least three sensing coils (101, 102, 103; 110) arranged to form a triangular shape around the secondary coil 21 of the wireless charging receiving unit 20 Status display.
  10. 제 8 항에 있어서, 상기 센싱코일 전압 출력부(120)는,The method of claim 8, wherein the sensing coil voltage output unit 120,
    각 센싱코일(101, 102, 103)별로 각각 공진코일과 공진 콘덴서 및 리액터(L101, C101, L1),((L102, C102, L2),(L103, C103, L3)로 이루어져 서로 다른 공진주파수(fa, fb, fc)로 수신세기를 검출하는 3개의 공진회로(121,122,123)와;Resonant coils, resonant capacitors, and reactors (L101, C101, L1), ((L102, C102, L2), (L103, C103, L3) for each sensing coil (101, 102, 103), respectively. three resonant circuits (121, 122, 123) for detecting reception strength with fa, fb, and fc;
    상기 3개의 공진회로(121, 122, 123)의 각 출력을 저항(R1,R2,R3)를 통해 공통으로 입력받아 변조시켜 스마트폰의 A/D 입력포트로 출력하는 변조부(124)로 구성된 무선충전 시스템의 송수신 정렬상태 표시장치.The modulator 124 is configured to receive and modulate the outputs of the three resonant circuits 121, 122, and 123 through the resistors R1, R2, and R3 in common and output them to the A / D input port of the smartphone. Transmission and reception alignment status display device of the wireless charging system.
  11. 무선 충전 패드(2)에 1차코일(13)을 포함하는 무선충전 송신부(10)가 설치되고, 블루투스 통신모듈이 내장된 스마트폰(3)에 2차코일(21)을 포함하는 무선충전 수신부(20)가 설치된 무선충전 시스템의 송수신 정렬상태 표시방법으로서,A wireless charging transmitter 10 including a primary coil 13 is installed in the wireless charging pad 2, and a wireless charging receiver including a secondary coil 21 in a smartphone 3 in which a Bluetooth communication module is embedded. As the transmission and reception alignment status display method of the wireless charging system 20 is installed,
    상기 무선충전 송신부(10)에, 1차코일 주변에 자기장 검출용 복수의 센싱코일(210), 상기 복수의 센싱코일(210)의 자기장 검출신호에 의해 1차코일(13)에 대한 2차코일(21)의 상대위치를 검출하여 송신하는 마이크로프로세서(230) 및 무선통신을 위한 블루투스 통신모듈(240)을 설치하고, 상기 스마트폰에 앱 어플리케이션으로 정렬상태표시 프로그램모듈(130')을 설치하여, In the wireless charging transmitter 10, a plurality of sensing coils 210 for magnetic field detection around the primary coil and a secondary coil for the primary coil 13 by magnetic field detection signals of the plurality of sensing coils 210. The microprocessor 230 for detecting and transmitting the relative position of the 21 and the Bluetooth communication module 240 for wireless communication are installed, and the alignment status display program module 130 'is installed as an app application on the smartphone. ,
    상기 정렬상태 표시 프로그램모듈(130')이 상기 블루투스 통신모듈(240)로부터 수신받은 1차코일(13)에 대한 2차코일(21)의 상태위치정보에 의거하여 스마트폰의 화면상에 1차코일 또는 2차코일중 어느 하나의 위치를 기준위치로 하여 기준위치에 대한 정렬영역을 표시하고, 상기 2차코일 또는 1차코일중 다른 하나의 위치를 정렬마크로 화면에 표시하여 1차코일과 2차코일의 정렬상태를 스마트폰의 화면상에 표시하는 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시방법.The alignment status display program module 130 ′ is displayed on the screen of the smartphone based on the status position information of the secondary coil 21 for the primary coil 13 received from the Bluetooth communication module 240. An alignment area with respect to the reference position is indicated by using the position of either the coil or the secondary coil as the reference position, and the other one of the secondary coil or the primary coil is displayed on the screen as an alignment mark to display the primary coil and the second coil. Transmitting and receiving alignment status display method of the wireless charging system, characterized in that for displaying the alignment state of the car coil on the screen of the smartphone.
  12. 충전패드 내에 무선충전 송신부(10)가 설치되고, 스마트폰에 무선충전 수신부(20)가 설치되어 무선 충전하는 무선충전시스템의 정렬상태 표시장치에 있어서, In the wireless charging transmitter 10 is installed in the charging pad, the wireless charging receiver 20 is installed in the smart phone in the alignment state display device of the wireless charging system for wireless charging,
    상기 무선충전 송신부(10)의 1차코일(13)의 주변 설치되는 복수의 자기장 검출용 센싱코일(210)과; 상기 복수의 센싱코일(210)로부터 각각의 자기장 신호를 검출하는 자기장신호 검출부(220)와, 상기 자기장신호 검출부(220)로부터 각 센싱코일(210)들의 검출신호를 입력받아 1차코일에 대한 2차코일의 상대 위치정보를 검출하는 마이크로프로세서(230)와; 상기 마이크로프로세서(230)의 제어에 의해 상기 1차코일의 위치에 따른 2차코일의 상태 위치정보를 무선송신하는 블루투스 통신모듈(240)을 포함하여 구성하고, A plurality of magnetic field detecting coils 210 installed around the primary coil 13 of the wireless charging transmitter 10; The magnetic field signal detector 220 detects each magnetic field signal from the plurality of sensing coils 210, and the detection signals of the sensing coils 210 are input from the magnetic field signal detector 220. A microprocessor 230 for detecting relative position information of the car coil; And a Bluetooth communication module 240 for wirelessly transmitting state position information of the secondary coil according to the position of the primary coil under the control of the microprocessor 230,
    상기 무선충전 수신부(20)가 설치된 스마트폰에 앱어플리케이션으로 설치되고, 상기 블루투스모듈(240)로부터 송신되는 1차코일과 2차코일의 상대 위치정보를 수신받아 1차코일 또는 2차코일의 위치를 화면상의 정중앙 고정위치로, 2차코일 또는 1차코일의 위치를 상기 고정위치에 대한 상대 위치를 표시하여 무선 충전 정렬상태를 표시하는 정렬상태 표시 프로그램모듈(130')을 포함하여 구성된 것을 특징으로 하는 무선충전 시스템의 송수신 정렬상태 표시장치.The wireless charging receiver 20 is installed as an app application on the smart phone installed, and receives the relative position information of the primary coil and the secondary coil transmitted from the Bluetooth module 240, the position of the primary coil or secondary coil To a fixed center position on the screen, the position of the secondary coil or the primary coil relative to the fixed position to display the alignment status display program module 130 'for displaying the wireless charging alignment status Transmitting and receiving alignment status display device of the wireless charging system.
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US10061372B2 (en) 2015-01-06 2018-08-28 Toshiba Tec Kabushiki Kaisha Information processing apparatus and peripheral device used by the same
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WO2021110491A1 (en) * 2019-12-06 2021-06-10 Gn Hearing A/S Method for charging a battery of a hearing device
CN118100476A (en) * 2024-04-28 2024-05-28 深圳市九洲卓能电气有限公司 Coil moving method of wireless charging equipment and wireless charging equipment

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