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WO2014088164A1 - Procédé et dispositif d'affichage de l'alignement d'émission et de réception dans un système de charge sans fil - Google Patents

Procédé et dispositif d'affichage de l'alignement d'émission et de réception dans un système de charge sans fil 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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WO
WIPO (PCT)
Prior art keywords
wireless charging
coil
alignment
primary coil
sensing
Prior art date
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Ceased
Application number
PCT/KR2013/003435
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English (en)
Korean (ko)
Inventor
신석주
이상곤
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SNPOWERCOM CO Ltd
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SNPOWERCOM CO Ltd
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Filing date
Publication date
Application filed by SNPOWERCOM CO Ltd filed Critical SNPOWERCOM CO Ltd
Publication of WO2014088164A1 publication Critical patent/WO2014088164A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne un procédé et un dispositif pour afficher un alignement d'émission et de réception dans un système de charge sans fil, et la présente invention comprend une pluralité de bobines de détection dans la périphérie d'une bobine d'émission ou d'une bobine de réception dans un système de charge sans fil de type à induction magnétique qui présente un rendement de charge sans fil dépendant largement de l'alignement d'émission et de réception, détecte les positions relatives entre la bobine d'émission et la bobine de réception en recevant les signaux de champ magnétique détectés par la pluralité de bobines de détection dans un terminal de charge sans fil, et affiche un alignement d'émission et de réception de type charge sans fil en affichant séparément les positions relatives détectées de la bobine d'émission et de la bobine de réception sur un écran du terminal.
PCT/KR2013/003435 2012-12-07 2013-04-23 Procédé et dispositif d'affichage de l'alignement d'émission et de réception dans un système de charge sans fil Ceased WO2014088164A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2012-0141559 2012-12-07
KR1020120141559A KR101257676B1 (ko) 2012-12-07 2012-12-07 무선충전 시스템의 송수신 정렬상태 표시방법 및 장치

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WO2014088164A1 true WO2014088164A1 (fr) 2014-06-12

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KR (1) KR101257676B1 (fr)
CN (1) CN103872721B (fr)
WO (1) WO2014088164A1 (fr)

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KR102494013B1 (ko) 2015-12-09 2023-02-01 삼성전자주식회사 전자 장치 및 전자 장치의 사용자 인터페이스 제공 방법
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