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WO2019013480A1 - Dispositif de charge sans fil ayant une bobine de communication sans fil - Google Patents

Dispositif de charge sans fil ayant une bobine de communication sans fil Download PDF

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Publication number
WO2019013480A1
WO2019013480A1 PCT/KR2018/007441 KR2018007441W WO2019013480A1 WO 2019013480 A1 WO2019013480 A1 WO 2019013480A1 KR 2018007441 W KR2018007441 W KR 2018007441W WO 2019013480 A1 WO2019013480 A1 WO 2019013480A1
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WO
WIPO (PCT)
Prior art keywords
wireless charging
disposed
coil
wireless
charging coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/007441
Other languages
English (en)
Korean (ko)
Inventor
임성현
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Innotek Co Ltd
Original Assignee
LG Innotek Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Innotek Co Ltd filed Critical LG Innotek Co Ltd
Publication of WO2019013480A1 publication Critical patent/WO2019013480A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/288—Shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • 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
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • 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 wireless charging device with a wireless communication coil.
  • Portable terminals such as mobile phones and laptops, include a battery for storing power and a circuit for charging and discharging the battery. In order for the battery of such a terminal to be charged, power must be supplied from an external charger.
  • a charging system (hereinafter referred to as a "wireless charging system") and a control method using a method of transmitting power wirelessly are proposed.
  • the wireless charging system since the wireless charging system has not been installed in some portable terminals in the past and the consumer has to purchase a separate wireless charging receiver accessory, the demand for the wireless charging system is low, but the wireless charging user is expected to increase rapidly.
  • Wireless charging function is expected to be equipped basically.
  • a wireless charging system comprises a wireless power transmitter for supplying electric energy in a wireless power transmission mode and a wireless power receiver for receiving electric energy supplied from a wireless power transmitter to charge the battery.
  • NFC Near Field Communication
  • NFC technology is a non-contact, short range wireless communication using the frequency band of 13.56 MHz, which means a communication technology that transmits data bidirectionally between terminals within a distance of 10 cm.
  • a wireless charging device having a wireless charging function is simultaneously provided to a wireless communication coil in order to increase user convenience.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.
  • the present invention also provides a wireless charging device having a miniaturized wireless communication coil.
  • the present invention also provides a wireless charging device having a wireless communication coil with a simplified manufacturing process.
  • the present invention provides a wireless charging device having a wireless communication coil with a small manufacturing cost.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of measuring an internal temperature with a simple structure.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of accurately measuring an internal temperature.
  • a wireless charging apparatus including: a substrate including an opening; A wireless communication coil disposed on the upper surface of the substrate; A wireless charging coil module including a first wireless charging coil disposed in the opening; And one or more temperature sensors disposed on the bottom surface of the substrate.
  • the wireless charging coil module may further include a second wireless charging coil and a third wireless charging coil disposed on the lower surface of the first wireless charging coil.
  • the temperature sensor includes a first temperature sensor disposed corresponding to the inside of the second wireless charging coil, and a second temperature sensor disposed corresponding to the inside of the third wireless charging coil .
  • the wireless charging apparatus may further include a shielding material disposed on a lower surface of the second wireless charging coil and the third wireless charging coil.
  • the shielding material may include a first heat dissipating hole disposed corresponding to the first temperature sensor and a second heat dissipating hole disposed corresponding to the second temperature sensor.
  • a wireless charging apparatus wherein the wireless charging apparatus further includes a terminal portion disposed on the bottom surface of the substrate, wherein the terminal portion includes a connection pattern connected to the temperature sensor and an outer pad connected to the connection pattern, . ≪ / RTI >
  • the outer pad includes first to third outer pads
  • the connection pattern includes first to fourth connection patterns
  • the first connection pattern includes first and second connection pads
  • the second connection pattern electrically connects the second external pad and the second electrode of the first temperature sensor
  • the third connection pattern electrically connects the first external terminal of the first temperature sensor and the second external pattern
  • the fourth connection pattern electrically connects the first external terminal of the first temperature sensor and the first external terminal of the second temperature sensor to the second external terminal of the second temperature sensor, Can be electrically connected.
  • a part of the second connection pattern may be disposed corresponding to the outside of the opening, and a part of the third connection pattern may be disposed corresponding to the outside of the opening.
  • a part of the first connection pattern may be disposed adjacent to the second connection pattern, and the fourth connection pattern may be disposed corresponding to the outside of the opening.
  • the wireless charging apparatus may further include first to third connection pins, the first connection pin is disposed corresponding to the first outer pad, and the second connection pin is connected to the second outer pad And the third connection pin may be disposed corresponding to the third outer pad.
  • the wireless charging apparatus may further include a connection pin supporter for supporting the first to third connection pins.
  • the wireless charging apparatus may further include a radiation member disposed on the lower surface of the shield member, and the radiation member may include first to third radiation holes corresponding to the first to third radiation holes of the shielding member, And a third heat dissipation hole.
  • the wireless charging apparatus further includes a control unit for determining an internal temperature;
  • the first temperature sensor may measure a first temperature to provide a first temperature value to the control unit, and the second temperature sensor may measure a second temperature to provide the second temperature value to the control unit.
  • the controller corrects the first temperature value and the second temperature value, and the corrected first temperature value and the second temperature value The internal temperature can be determined.
  • the controller may correct the first temperature value and the second temperature value by adding an offset value.
  • the controller may correct the first temperature value and the second temperature value by weighting them.
  • the controller may determine an average value of the corrected first temperature value and the corrected second temperature value as the internal temperature.
  • the present invention provides a wireless charging device having a wireless communication coil.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.
  • the present invention also provides a wireless charging device having a miniaturized wireless communication coil.
  • the present invention also provides a wireless charging device having a wireless communication coil with a simplified manufacturing process.
  • the present invention provides a wireless charging device having a wireless communication coil with a small manufacturing cost.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of measuring an internal temperature with a simple structure.
  • the present invention also provides a wireless charging device having a wireless communication coil capable of accurately measuring an internal temperature.
  • FIG. 1 is a block diagram for explaining a wireless charging system according to an embodiment.
  • FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment of the present invention.
  • FIG. 3 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.
  • FIG. 4 is an exploded perspective view of a wireless charging device according to one embodiment.
  • FIG 5 is a side view of a wireless charging device according to one embodiment.
  • FIG. 6 is a bottom plan view of a wireless charging device according to one embodiment.
  • FIG. 7 is a top plan view of a wireless charging device according to an embodiment.
  • FIG. 8 is a bottom plan view of a substrate of a wireless charging device according to one embodiment.
  • FIG. 9 is a perspective view of a wireless charging coil module and a shielding agent of a wireless charging device according to an embodiment.
  • FIG. 10 is a front view of a wireless charging device for explaining a connection pin and a connection pin supporter according to an embodiment.
  • FIG. 11 is a side view of a wireless charging device for explaining a connection pin and a connection pin supporter according to an embodiment.
  • FIG. 12 is a flowchart illustrating a method of measuring a temperature of a wireless charging device according to an embodiment.
  • the present invention is not necessarily limited to these embodiments, as long as all of the constituent elements of the embodiment are described as being combined or operated together. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a computer-readable storage medium, readable and executed by a computer, thereby realizing embodiments. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.
  • first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.
  • an apparatus for transmitting wireless power on a wireless power charging system includes a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, , , A wireless power transmission device, a wireless power transmitter, a wireless charging device, and the like.
  • a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a receiving terminal, a receiving side, a receiving device, a receiver Terminals and the like can be used in combination.
  • the wireless charging device may be configured as a pad type, a cradle type, an access point (AP) type, a small base type, a stand type, a ceiling embedded type, a wall type, Power may be transmitted to the device.
  • AP access point
  • a wireless power transmitter can be used not only on a desk or on a table, but also developed for automobiles and used in a vehicle.
  • a wireless power transmitter installed in a vehicle can be provided in a form of a stand that can be easily and stably fixed and mounted.
  • a wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.
  • a wireless power receiver may include at least one wireless power transmission scheme and may receive wireless power from two or more wireless power transmitters at the same time.
  • the wireless power transmission scheme may include at least one of the electromagnetic induction scheme, the electromagnetic resonance scheme, and the RF wireless power transmission scheme.
  • the wireless power receiving means for supporting the electromagnetic induction method includes a wireless power consortium (WPC), which is a wireless charging technology standard organization, and an electromagnetic induction wireless charging technique defined by the Air Fuel Alliance (formerly PMA, Power Matters Alliance) .
  • the wireless power receiving means supporting the electromagnetic resonance method may include a resonance wireless charging technique defined in the Air Fuel Alliance (formerly Alliance for Wireless Power) standard mechanism, a wireless charging technology standard organization.
  • a wireless power transmitter and a wireless power receiver that constitute a wireless power system can exchange control signals or information through in-band communication or Bluetooth low energy (BLE) communication.
  • the in-band communication and the BLE communication can be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, and the like.
  • the wireless power receiver can transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching on / off the current induced through the reception coil in a predetermined pattern.
  • the information transmitted by the wireless power receiver may include various status information including received power intensity information.
  • the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.
  • FIG. 1 is a block diagram for explaining a wireless charging system according to an embodiment.
  • the wireless charging system includes a wireless power transmission terminal 10 for wirelessly transmitting power, a wireless power receiving terminal 20 for receiving the transmitted power, and an electronic device 30 Lt; / RTI >
  • the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 can perform in-band communication in which information is exchanged using the same frequency band as that used for wireless power transmission.
  • the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 perform out-of-band communication in which information is exchanged using a different frequency band different from the operating frequency used for wireless power transmission .
  • information exchanged between the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 may include control information as well as status information of each other.
  • the status information and the control information exchanged between the transmitting and receiving end will become more apparent through the description of the embodiments to be described later.
  • the in-band communication and the out-of-band communication may provide bidirectional communication, but the present invention is not limited thereto. In another embodiment, the in-band communication and the out-of-band communication may be provided.
  • the unidirectional communication may be that the wireless power receiving terminal 20 transmits information only to the wireless power transmitting terminal 10, but the present invention is not limited thereto, and the wireless power transmitting terminal 10 may transmit information Lt; / RTI >
  • bidirectional communication is possible between the wireless power receiving terminal 20 and the wireless power transmitting terminal 10, but information can be transmitted only by any one device at any time.
  • the wireless power receiving terminal 20 may acquire various status information of the electronic device 30.
  • the status information of the electronic device 30 may include current power usage information, information for identifying a running application, CPU usage information, battery charge status information, battery output voltage / current information, And is information obtainable from the electronic device 30 and available for wireless power control.
  • FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment of the present invention.
  • the wireless power transmitter 200 includes a power conversion unit 210, a power transmission unit 220, a wireless charging communication unit 230, a control unit 240, a sensing unit 250, a short range communication unit 270 ), And a wireless communication transmission coil 280. It should be noted that the configuration of the wireless power transmitter 200 described above is not necessarily an essential configuration, and may be configured to include more or less components.
  • the power conversion unit 210 may convert the power to a predetermined intensity.
  • the power converter 210 may include a DC / DC converter 211 and an amplifier 212.
  • the DC / DC converting unit 211 may convert the DC power supplied from the power supply unit 260 into a DC power having a specific intensity according to a control signal of the controller 240.
  • the sensing unit 250 may measure the voltage / current of the DC-converted power and provide the measured voltage / current to the control unit 240.
  • the control unit 240 may adaptively cut off the power supply from the power supply unit 250 or block the power supply to the amplifier 212 based on the voltage / current value measured by the sensing unit 250 .
  • the sensing unit 250 may measure the internal temperature of the wireless power transmitter 200 and may provide the measurement result to the controller 240 in order to determine whether overheating occurs. More specifically, the sensing unit 250 may include one or more temperature sensors. One or more temperature sensors may measure the temperature of the transmit coil of the power transfer section 220.
  • control unit may adaptively cut off the power supply from the power supply unit 250 or block the power supply to the amplifier 212 based on the temperature value measured by the sensing unit 250.
  • a power cutoff circuit may be further provided at one side of the power conversion unit 210 to cut off the power supplied from the power supply unit 250 or cut off the power supplied to the amplifier 212.
  • control unit may adjust the intensity of the power supplied to the power transfer unit 220 based on the temperature value measured by the sensing unit 250.
  • the amplifier 212 can adjust the intensity of the DC / DC-converted power according to the control signal of the controller 240.
  • the control unit 240 may receive the power reception status information and / or the power control signal of the wireless power receiver through the wireless charging communication unit 230 and may receive the received power reception status information and /
  • the amplification factor of the amplifier 212 can be dynamically adjusted based on the amplification factor.
  • the power reception status information may include, but is not limited to, the intensity information of the rectifier output voltage, the intensity information of the current applied to the reception coil, and the like.
  • the power control signal may include a signal for requesting power increase, a signal for requesting power reduction, and the like.
  • the power transmission unit 220 may be configured to include a multiplexer 221 (or a multiplexer), a wireless charging coil module 222 for controlling the output power of the amplifier 212 to be transmitted to the transmission coil.
  • the wireless charging coil module 222 may include first to nth transmission coils.
  • the power transmission unit 220 may also include a carrier generator (not shown) for generating a specific operating frequency for power transmission .
  • the carrier generator may generate a specific frequency for converting the output DC power of the amplifier 212 transmitted through the multiplexer 221 to AC power having a specific frequency.
  • the AC signal generated by the carrier generator is mixed with the output terminal of the multiplexer 221 to generate AC power.
  • this is merely one embodiment, It should be noted that they may be mixed only or later.
  • the controller 240 may transmit power through time division multiplexing for each transmission coil when a plurality of wireless power receivers are connected. For example, if the wireless power transmitter 200 has three wireless power receivers-i. E., The first through third wireless power receivers, respectively, identified through three different transmit coils, i. E. First through third transmit coils , The control unit 240 controls the multiplexer 221 so that power can be transmitted through a specific transmission coil in a specific time slot. At this time, the amount of power transmitted to the corresponding wireless power receiver can be controlled according to the length of the time slot allocated for each transmission coil, but this is only one embodiment. The amplification rate of the amplifier 212 of the wireless power receiver may be controlled to control the transmission power of each wireless power receiver.
  • the control unit 240 may control the multiplexer 221 so that the detection signals may be sequentially transmitted through the first through n'th transmit coils 222 during the first differential sense signal transmission procedure. At this time, the control unit 240 can identify the time at which the detection signal is transmitted using the timer 255. When the detection signal transmission time comes, the control unit 240 controls the multiplexer 221 so that the detection signal is transmitted through the corresponding transmission coil It can be controlled to be transmitted. For example, the timer 255 may transmit a specific event signal to the control unit 240 at predetermined intervals during the ping transmission step. When the event signal is detected, the control unit 240 controls the multiplexer 221 to transmit the corresponding event signal It is possible to control the digital ping to be transmitted through the coil.
  • control unit 240 transmits a predetermined transmission coil identifier for identifying a signal strength indicator (Signal Strength Indicator) through a transmission coil from the demodulation unit 232 during the first detection signal transmission procedure, Lt; / RTI > received signal strength indicator.
  • the controller 240 controls the multiplexer 221 so that the signal strength indicator can be transmitted only through the transmitting coil (s) You may.
  • the control unit 240 transmits the transmit coil, which receives the signal strength indicator having the largest value,
  • the detection signal may be determined as a transmission coil to be transmitted first, and the multiplexer 221 may be controlled according to the determination result.
  • the modulator 231 may modulate the control signal generated by the controller 240 and transmit the modulated control signal to the multiplexer 221.
  • the modulation scheme for modulating the control signal includes a frequency shift keying (FSK) modulation scheme, a Manchester coding modulation scheme, a phase shift keying (PSK) modulation scheme, a pulse width modulation scheme, A differential bi-phase modulation method, and the like.
  • the demodulator 232 can demodulate the detected signal and transmit the demodulated signal to the controller 240 when a signal received through the transmission coil is detected.
  • the demodulated signal may include a signal strength indicator, an error correction (EC) indicator for power control during wireless power transmission, an end of charge indicator (EOC), an overvoltage / overcurrent / overheat indicator, but is not limited to, various status information for identifying the status of the wireless power receiver.
  • the demodulating unit 232 may identify which of the transmitting coils the demodulated signal is received and may provide the controlling unit 240 with a predetermined transmitting coil identifier corresponding to the identified transmitting coil.
  • the wireless power transmitter 200 may obtain the signal strength indicator through in-band communication that uses the same frequency used for wireless power transmission to communicate with the wireless power receiver.
  • the wireless power transmitter 200 can transmit wireless power using the transmit coil 222, as well as exchange various information with the wireless power receiver through the transmit coil 222.
  • the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmit coil 222 (i.e., first to n < th > transmit coils) It should be noted that it may also perform in-band communication with the receiver.
  • the wireless power transmitter 200 may include a short range communication unit 270.
  • the short-range communication unit 270 may perform short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission.
  • the short-range bidirectional communication may be an NFC (Near Field Communication) method.
  • NFC is one of Radio Frequency IDentification (RFID) technologies and it is a wireless communication technology that transmits various wireless data within a distance of 10cm or less using a frequency of 13.56MHz.
  • the wireless power transmitter 200 may include a wireless communication coil 280 that transmits and receives signals for use in short-distance bidirectional communication with a wireless power receiver.
  • FIG. 3 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.
  • the wireless power receiver 300 includes a wireless charging coil module 310, a rectifier 320, a DC / DC converter 330, a load 340, a sensing unit 350, A wireless charging communication unit 360, a main control unit 370, a short range communication unit 380, and a wireless communication coil 390.
  • the wireless charging communication unit 360 may include at least one of a demodulation unit 361 and a modulation unit 362.
  • the wireless power receiver 300 may include a short range communication unit 380.
  • the short-range communication unit 380 can perform short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission.
  • the short-range bidirectional communication may be an NFC (Near Field Communication) method.
  • NFC is one of Radio Frequency IDentification (RFID) technologies and it is a wireless communication technology that transmits various wireless data within a distance of 10cm or less using a frequency of 13.56MHz.
  • the wireless power receiver 300 may include a wireless communication coil 290 that transmits and receives signals for use in short-distance bidirectional communication with a wireless power transmitter.
  • the AC power received through the wireless charging coil module 310 may be transmitted to the rectifier 320.
  • the rectifier 320 may convert the AC power to DC power and transmit it to the DC / DC converter 330.
  • the DC / DC converter 330 may convert the intensity of the rectifier output DC power to a specific intensity required by the load 340 and then deliver it to the load 340.
  • the wireless charging coil module 310 may include a plurality of reception coils (not shown), that is, first to n-th reception coils.
  • the frequency of the AC power transmitted to each of the reception coils may be different from each other, and another embodiment may include a predetermined frequency controller having a function of adjusting LC resonance characteristics for different reception coils
  • the resonance frequencies of the respective reception coils can be set differently.
  • the sensing unit 350 may measure the intensity of the DC power output from the rectifier 320 and may provide the measured DC power to the main control unit 370. Also, the sensing unit 350 may measure the intensity of the current applied to the receiving coil 310 according to the wireless power reception, and may transmit the measurement result to the main control unit 370. For example, the main controller 370 may compare the measured rectifier output DC power with a predetermined reference value to determine whether an overvoltage is generated. As a result of the determination, if an overvoltage occurs, a predetermined packet indicating that an overvoltage has occurred can be generated and transmitted to the modulator 362.
  • the signal modulated by the modulating unit 362 may be transmitted to the wireless power transmitter through the receiving coil 310 or a separate coil (not shown).
  • the main control unit 370 may determine that the sensing signal is received when the intensity of the rectifier output DC power is equal to or greater than a predetermined reference value.
  • the signal intensity indicator corresponding to the sensing signal is received by the modulating unit 362 To be transmitted to the wireless power transmitter.
  • the demodulation unit 361 demodulates the AC power signal between the reception coil 310 and the rectifier 320 or the DC power signal output from the rectifier 320 to identify whether or not the detection signal is received, (370).
  • the main control unit 370 can control the signal strength indicator corresponding to the detection signal to be transmitted through the modulator 362.
  • the sensing unit 350 may measure the internal temperature of the wireless power receiver 300 and provide the measured temperature value to the main control unit 370.
  • the sensing unit 350 may include one or more temperature sensors.
  • One or more temperature sensors may measure the temperature of the receiving coil of the charging coil module 310.
  • the main control unit 370 may determine whether overheating occurs by comparing the measured internal temperature with a predetermined reference value. As a result of the determination, if overheating occurs, a predetermined packet indicating that overheating has occurred can be generated and transmitted to the modulating unit 362.
  • the signal modulated by the modulating unit 362 may be transmitted to the wireless power transmitter through the receiving coil 310 or a separate coil (not shown).
  • FIG. 4 is an exploded perspective view of a wireless charging apparatus according to an embodiment
  • FIG. 5 is a side view of a wireless charging apparatus according to an embodiment
  • FIG. 6 is a bottom plan view of a wireless charging apparatus according to an embodiment.
  • the wireless charging apparatus may include a substrate 400.
  • the substrate 400 may be disposed on the wireless charging coil modules 610-630.
  • the substrate 400 may be provided with an opening 450 inwardly so that the wireless charging coil modules 610 to 630 are inserted therein.
  • the substrate 400 may be disposed on the shielding material 700.
  • the substrate 400 can be rigid.
  • the rigid substrate 400 can support the wireless communication coil 500 disposed on the upper surface, the wireless charging coil modules 610 to 630 disposed on the inner and lower surfaces, the shielding material 700, and the like.
  • the area of the substrate 400 may be larger than the areas of the wireless communication coil 500 disposed at the upper portion, the wireless charging coil modules 610 through 630 disposed at the lower portion, the shielding material 700, and the radiation member 800 .
  • the substrate 400 may include terminal portions on the lower surface 400b.
  • the terminal portion may include a plurality of connection patterns, a plurality of inner pads IP1 to IP6, a plurality of outer pads OP1 to OP11, and a plurality of via holes h1 to h5.
  • the plurality of connection patterns may include a first connection pattern, a second connection pattern, a third connection pattern, and a fourth connection pattern 1440.
  • the first connection pattern may include a 1-1 connection pattern to a 1-2 connection pattern 411-412.
  • the second connection pattern may include the second-first connection pattern to the second-third connection pattern 421 to 423.
  • the third connection pattern may include the 3-1 connection patterns to the 3-6 connection patterns 431 through 436.
  • the plurality of inner pads may include first to sixth inner pads IP1 to IP6.
  • the plurality of outer pads may include first to eleventh outer pads OP1 to OP11.
  • the plurality of via holes may include first through fifth via holes h1 through h5.
  • the wireless charging device may include a wireless communication coil 500.
  • the wireless communication coil 500 may be disposed on the upper surface of the substrate 400.
  • the wireless communication coil 500 may be a wireless communication coil pattern disposed. A more detailed description will be given later.
  • the wireless charging device may include wireless charging coil modules 610-630.
  • the wireless charging coil modules 610-630 may include one or more wireless charging coils.
  • the one or more wireless charging coils may be one or more transmit coils of the wireless power transmitter or one or more receive coils of the wireless power receiver. Further, for example, when there are a plurality of wireless charging coils, each wireless charging coil may be wound with the same number of turns. But may be wound in different numbers of turns. Further, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and different inductances may be provided. Further, the plurality of wireless charging coils may be arranged in one or more layers.
  • the plurality of wireless charging coils may include first to third wireless charging coils 610 to 630.
  • the second wireless charging coil 620 and the third wireless charging coil 630 may be disposed in a first layer disposed in the same layer.
  • the first wireless charging coil 610 may be disposed above the second wireless charging coil 620 and the third wireless charging coil 630.
  • a plurality of wireless charging coils can be disposed in different layers to expand the charging area so that wireless power can be efficiently transmitted.
  • the first wireless charging coil 610 may be disposed in the same layer as the substrate 400. 5, when the wireless charging coil module is a plurality of wireless charging coils, the first wireless charging coil 610 may be inserted and arranged in the opening 450 disposed inside the substrate 400 have.
  • the wireless charging device can be downsized.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the second wireless charging coil and the third wireless charging coils 620 and 630 and the substrate 400 so that the second wireless charging coil and the third wireless charging coil 620, 630 may be fixed to the substrate 400.
  • the at least one wireless charging coil may include first and second connection portions through which an AC signal is input or output.
  • the first and second connections may be wires or cables coated with a coating.
  • the first wireless charging coil 610 may include a 1-1 charging coil connecting portion 611 and a 1-2 charging coil connecting portion 612.
  • the first 1-1 charging coil connection 611 may extend from a coil line disposed outside of the first wireless charging coil 610.
  • the first to sixth charging coil connection portions 612 may extend from a coil line disposed inside the first wireless charging coil 610.
  • the second wireless charging coil 620 may include a second-1 charging coil connection 621 and a second-2 charging coil connection 622.
  • the second-1 charging coil connection part 621 may extend from a coil line disposed outside the second wireless charging coil 620.
  • the second-second charging coil connection portion 622 may extend from a coil line disposed inside the second wireless charging coil 620.
  • the third wireless charging coil 630 may include a third-first charging coil connection 631 and a third-second charging coil connection 632.
  • the 3-1 charging coil connection 631 may extend from a coil line disposed inside the third wireless charging coil 630.
  • the third-second charging coil connection portion 632 may extend from a coil line disposed outside the third wireless charging coil 630.
  • each of the first and second connection lines of the one or more wireless charging coils may be extended from each of the wireless charging coils 610 to 630 in the same direction on one side of the wireless charging device. More specifically, each of the first and second connection lines of the one or more wireless charging coils 610 to 630 may extend in the direction of the cable entry / exit part 710 disposed on one side of the shielding material 700.
  • the 2-1 charging coil connecting portion 621 and the 2-2 charging coil connecting portion 622 of the third wireless charging coil 630 and the 3-1 charging coil connecting portion 631 of the third wireless charging coil 630 and the The connection portions 632 may extend in the direction of the cable entry portion 710 disposed at one side of the shielding material 700.
  • Each of the first and second connection lines of the at least one wireless charging coil 610 to 630 may be electrically connected to a plurality of inner connection pads disposed on the lower surface 400b of the substrate 400.
  • each of the first and second connection lines of one or more wireless charging coils 610 to 630 may be soldered and connected to each of the plurality of inner connection pads.
  • each of the first and second connection lines may be connected to a plurality of inner connection pads in the order in which one or more wireless charging coils 610 to 630 are arranged. For example, as shown in FIG. 6, when there are a plurality of wireless charging coils, the second wireless charging coil 620, the first wireless charging coil 610, and the third wireless charging coil 630 may be arranged in this order.
  • the first inner pad IP1 may be connected to the second-1 charging coil connection portion 621.
  • the second inner pad IP2 may be connected to the second-second charging coil connection portion 622.
  • the third inner pad IP3 may be connected to the 1-1 charging coil connecting portion 611.
  • the fourth inner pad IP4 may be connected to the first to second charging coil connection portions 612.
  • the fifth inner pad IP5 may be connected to the 3-1 charging coil connecting portion 631.
  • the sixth inner pad IP6 may be connected to the third-second charging coil connection portion 632.
  • the wireless charging device may include the shielding material 700.
  • the shielding material 700 may be disposed on the lower surface of the wireless charging coil modules 610 to 630.
  • the shielding material 700 may be disposed on the lower surfaces of the second wireless charging coil 620 and the third wireless charging coil 630.
  • An adhesive or an adhesive member (not shown) is disposed between the upper surface of the shielding material 700 and the lower surface of the second wireless charging coil 620 and the lower surface of the third wireless charging coil 630 so that the shielding material 700, The charging coils 620 and 630 can be fixed.
  • the shield member 700 can guide the wireless power generated by the wireless charging coil modules 610 to 630 disposed in the upper portion in the charging direction and protect various circuits disposed below from the electromagnetic fields.
  • the shielding material 700 may include first through third heat dissipating holes 721 through 723.
  • the first to third heat dissipating holes 721 to 723 of the shielding material 700 transmit the heat generated from the wireless charging coil modules 610 to 630 to the heat dissipation member 800 disposed therebelow, Gt; 630 < / RTI >
  • the shielding material 700 may include a cable entry portion 710.
  • the cable entry and exit portion 710 of the shielding material 700 can secure the space of the charging coil connection portion when the connection portions of the charging coils of the wireless charging coils 610 to 630 are connected to the inner pads disposed on the lower surface of the substrate 400 have. This will be described later with reference to FIG.
  • the wireless charging apparatus may include a heat dissipating member 800.
  • the radiation member 800 may be disposed on the lower surface of the shield member 700. 9, an adhesive or an adhesive member (not shown) may be disposed between the upper surface of the heat dissipating member 800 and the lower surface of the shielding member 700 to fix the heat dissipating member 800 and the shielding member 700 have.
  • the heat dissipating member 800 may be configured such that the heat generated in the wireless charging coil module is directly transmitted through the shielding material 700 or transmitted through the first to third heat dissipating holes 721 to 732 of the shielding material 700, Heat can be released.
  • the radiation member 800 may be made of a material having a high thermal conductivity or a high thermal emissivity.
  • the heat dissipating member 800 may include first through third heat dissipating holes 821 through 823.
  • the first to third heat dissipating holes 821 to 823 of the heat dissipating member 800 transfer heat generated from the wireless charging coil modules 610 to 630 to the outside to help cool the wireless charging coil modules 610 to 630 .
  • the first to third heat dissipating holes 821 to 823 of the heat dissipating member 800 may correspond to the positions, shapes, and sizes of the first to third heat dissipating holes 721 to 723 of the shielding material 700 have.
  • the cable entry / exit portion 810 of the heat dissipating member 800 can secure the space of the charge coil connection portion when the connection portions of the charging coils of the wireless charging coils 610 to 630 are connected to the inner pads disposed on the lower surface of the substrate 400 You can do it. More specifically, the cable entry / exit portion 810 of the heat radiation member 800 may correspond to the position, shape, and size of the cable entry / exit portion 710 of the shielding material 700.
  • the wireless charging apparatus is capable of wireless communication and wireless charging.
  • the wireless charging apparatus according to the embodiment does not require a separate structure for fixing or housing the wireless charging coil modules 610 to 630, the wireless charging apparatus can be downsized.
  • the wireless charging apparatus according to the embodiment does not require a separate structure for fixing or accommodating the wireless charging coil modules 610 to 630, so that the structure is simple.
  • the wireless charging apparatus according to the embodiment does not need a separate structure for fixing or accommodating the wireless charging coil modules 610 to 630, the manufacturing process is simplified.
  • the wireless charging apparatus according to the embodiment does not require a separate structure for fixing or accommodating the wireless charging coil modules 610 to 630, the manufacturing cost is low.
  • the wireless charging apparatus according to an embodiment of the present invention provides a wireless charging apparatus having a wireless communication coil having an excellent heat generating effect.
  • FIG. 7 is a top plan view of a wireless charging apparatus according to an embodiment
  • FIG. 8 is a bottom plan view of a substrate of a wireless charging apparatus according to an embodiment.
  • the upper surface 400a of the substrate 400 may be disposed with the wireless communication coil 500.
  • the wireless communication coil 500 may be a plurality of wireless communication coil patterns. More specifically, the plurality of wireless communication coil patterns may include a first wireless communication coil pattern 510 and a second wireless communication coil pattern 520.
  • the first wireless communication coil pattern 510 may extend clockwise from one side to the other side.
  • the first wireless communication coil pattern 510 may include a first via hole h1 on one side.
  • the first via hole h1 may be connected to the first wireless communication coil pattern 510 and the 1-1 connection pattern 411 disposed on the lower surface 400b of the substrate 400.
  • the first wireless communication coil pattern 510 may include a fourth via hole h4 on the other side.
  • the fourth via hole h4 may be connected to the first wireless communication coil pattern 510 and the fourth connection pattern 440 disposed on the lower surface 400b of the substrate 400.
  • One side of the second wireless communication coil pattern 520 may be disposed apart from one side of the first wireless communication coil pattern 510.
  • the second wireless communication coil pattern 520 may extend to the other side of the first wireless communication coil pattern 510 after one turn in the counterclockwise direction from one side. That is, the other side of the second wireless communication coil pattern 530 may be disposed adjacent to the other side of the first wireless communication coil pattern 510.
  • the second wireless communication coil pattern 520 may include a second via hole h2 on one side.
  • the second via hole h2 may be connected to the second wireless communication coil pattern 520 and the 1-2 connection pattern 412 disposed on the lower surface 400b of the substrate 400.
  • the second wireless communication coil pattern 520 may include a fifth via hole h5 on the other side.
  • the fifth via hole h5 may be connected to the second wireless communication coil pattern 520 and the fourth connection pattern 440 disposed on the lower surface 400b of the substrate 400.
  • the second wireless communication coil pattern 520 may further extend after one turn from one side and include a third via hole h3 at a position adjacent to the second via hole h2.
  • the third via hole h3 may be connected to the second wireless communication coil pattern 520 and the second -1 connection pattern 421 disposed on the lower surface 400b of the substrate 400.
  • the openings 450 disposed in the substrate 400 may be disposed in correspondence with the outside of the first wireless charging coil 610. More specifically, the opening 450 may be the same position, shape and size as the outside of the first wireless charging coil 610. The opening 450 may be larger than the outer size of the first wireless charging coil 610. [ Accordingly, the wireless charging apparatus according to the embodiment can efficiently cool the heat generated in the first wireless charging coil 610.
  • the lower surface 400b of the substrate 400 may be provided with the opening 450 similarly to the upper surface 400a of the substrate 400.
  • the first outer pad to the eleventh outer pads OP1 to OP11 may be disposed on one of the outermost regions of the lower surface 400b of the substrate 400.
  • the first outer pad to the eleventh outer pads OP1 to OP11 may be arranged to be shifted from each other.
  • the first to eleventh outer pads OP1 to OP11 may be arranged in a zigzag fashion.
  • the first, third, sixth, eighth and tenth outer pads OP1, OP3, OP6, OP8 and OP10 are connected to the second, fourth, fifth, seventh, ninth and eleventh outer pads OP2, OP4, OP5, OP7, OP9, and OP11.
  • the present invention is not limited thereto, and a plurality of outer pads may be arranged in a row. In this case, the bezel of the wireless charging device can be reduced.
  • the lower surface 400b of the substrate 400 has first to sixth inner pads IP1 to IP6 positioned inside the substrate 400 in a region where the first to eleventh outer pads OP1 to OP11 are disposed, Can be disposed. More specifically, the first to sixth inner pads IP1 to IP6 may be arranged in a line in a position adjacent to the 2-1 connection patterns to the 2-4 connection patterns 421 to 423. More specifically, the first inner pad IP1 is disposed adjacent to the second connection pattern 423, and the sixth inner pattern IP6 is disposed farthest from the second connection pattern 423 have.
  • the sixth to eleventh outer pads OP6 to OP11 may be spaced apart from the first to sixth inner pads IP1 to IP6. More specifically, the minimum separation distance between the sixth to ninth outer pads OP6 to OP11 and the first to sixth inner pads IP1 to IP6 may be 2 mm to 8 mm. The distance is not limited to the distance, but may be changed depending on the kind of the process or the shape of the product.
  • the 1-1 connection pattern 411 extends from the first outer pad OP1 to the first via hole h1 and can electrically connect the first outer pad OP1 and the first via hole h1. That is, the first outer pad OP1 is electrically connected to the first wireless communication coil pattern 510 on the upper surface 400a of the substrate 400 via the 1-1 connection pattern 411 and the first via hole h1 Can be connected.
  • the 1-2 connection pattern 412 may extend from the second outer pad OP2 to the second via hole h2 and may electrically connect the second outer pad OP2 and the second via hole h2. That is, the second outer pad OP2 is electrically connected to the second wireless communication coil pattern 520 on the top surface 400a of the substrate 400 through the first connection pattern 412 and the second via hole h2 Can be connected.
  • the 3-1 connection pattern 431 extends from the sixth outer pad OP6 to the first inner pad IP1 and is electrically connected to the 11th outer pad OP11 and the first inner pad IP1 have.
  • the 3-2 connection pattern 432 extends from the seventh outside pad OP7 to the second inside pad IP2 and electrically connects the seventh outside pad OP7 and the second inside pad IP2 have.
  • the third 3-3 connection pattern 433 extends from the eighth outer pad OP8 to the third inner pad IP3 and electrically connects the eighth outer pad OP8 and the third inner pad IP3 have.
  • the third 3-4 connection pattern 434 extends from the ninth outer pad OP9 to the fourth inner pad IP4 and is electrically connected to the ninth outer pad OP9 and the fourth inner pad IP4 have.
  • the third 3-5 connection pattern 435 extends from the tenth outer pad OP10 to the fifth inner pad IP5 and electrically connects the tenth outer pad OP10 and the fifth inner pad IP5 have.
  • the third through sixth connection pattern 436 extends from the eleventh outer pad OP11 to the sixth inner pad IP6 and electrically connects the eleventh outer pad OP11 and the sixth inner pad IP6 have.
  • the wireless charging device may include one or more temperature sensors.
  • One or more temperature sensors may be disposed on the lower surface 400b of the substrate 400.
  • the plurality of temperature sensors may include first and second temperature sensors 910 and 920.
  • the first and second temperature sensors 910 and 920 may be disposed corresponding to the second to third wireless charging coils 620 to 630 (dashed line).
  • the first and second temperature sensors 910 and 920 may be disposed apart from each other with the opening 450 where the first wireless charging coil 610 is disposed at the center. More specifically, the first temperature sensor 910 may be disposed corresponding to the inside of the second wireless charging coil 620 and may be disposed apart from one side of the opening 450.
  • the first temperature sensor 910 may be disposed on the lower surface 400b of the substrate 400.
  • the second temperature sensor 920 may be disposed corresponding to the inside of the second wireless charging coil 620 and may correspond to the other side facing one side of the opening 450.
  • the second temperature sensor 920 may be disposed on the lower surface 400b of the substrate 400.
  • the first and second temperature sensors 910 and 920 may be disposed corresponding to the first and third heat dissipating holes 721 and 723 of the shield material 700, respectively. More specifically, the first temperature sensor 910 may be disposed on the lower surface 400b of the substrate 400 in correspondence with the first heat dissipating hole 721.
  • the second temperature sensor 920 may be disposed on the lower surface 400b of the substrate 400 corresponding to the third heat dissipating hole 723.
  • the at least one temperature sensor may include first and second front ends, respectively.
  • the first temperature sensor 910 may include first and second electrode stages 910a and 910b.
  • the second temperature sensor 920 may include first and second extremes 920a and 920b.
  • the first positive terminal of each of the plurality of temperature sensors may be a common terminal.
  • the 2-1 connection pattern 421 extends from the third outer pad OP3 to the first electrode terminal 910a of the first temperature sensor 910 and is connected to the third outer pad OP3,
  • the first electrode terminal 910a of the first electrode 910 can be electrically connected.
  • the second-1 connection pattern 421 extends from the third outer pad OP3 to a region where the second-second connection pattern 422 is disposed, extending to the first outside region A of the opening 450 Can be extended.
  • the second-1 connection pattern 421 extending to the first outside area A of the opening 450 extends to the opening 450 to the outside second area B where the first temperature sensor 910 is disposed.
  • the second connection pattern 422 extending along the outer side of the second connection pattern 422.
  • the second-1 connection pattern 421 extended to the second region B outside the opening 450 may extend to the first electrode terminal 910a of the first temperature sensor 910.
  • the second-1 connection pattern 421 may be disposed in the third via hole h3. That is, the third outer pad OP3 is electrically connected to the second wireless communication coil pattern 520 on the upper surface 400a of the substrate 400 through the second-1 connection pattern 421 and the third via hole h3 Can be connected.
  • the second-second connection pattern 422 is extended from the fourth outer pad OP4 to the second electrode pad 910b of the first temperature sensor 910, and is connected to the fourth outer pad OP4 and the first temperature sensor 910b. And the second electrode terminal 910b of the second electrode 910 can be electrically connected. More specifically, the second-second connection pattern 422 may extend from the fourth outer pad OP4 to the first outside area A of the opening 450 to the outside of the opening 450. The second-second connection pattern 422 extending to the outer first region A of the opening 450 extends to the opening 450 to the outer second region B where the first temperature sensor 910 is disposed. As shown in FIG.
  • the second-second connection pattern 422 may be adjacent to the opening 450 when extending along the outside of the opening 450.
  • the second-second connection pattern 422 extending to the second outside region B of the opening 450 may extend to the second front end 910b of the first temperature sensor 910.
  • the second 2-3 connection pattern 423 extends from the fifth outer pad OP5 to the second electrode terminal 920b of the second temperature sensor 920 and is connected to the fifth outer pad OP5, And the second electrode terminal 920b of the second electrode 920 can be electrically connected. More specifically, the second to third connection patterns 423 may extend from the fifth outer pad OP5 to the first outer region A of the opening 450 to the outside of the opening 450. The second and third connection patterns 423 extended to the first outside region A of the opening 450 extend to the outside third region C of the opening 450 in which the second temperature sensor 920 is disposed, As shown in FIG. That is, the second and third connection patterns 423 may extend in a direction opposite to the second connection pattern 422 outside the opening 450.
  • the second to third connection pattern 423 may be adjacent to the opening 450 when extending along the outside of the opening 450.
  • the second to third connecting patterns 423 extending to the outer third region C of the opening 450 may extend to the second electrode terminal 920b of the second temperature sensor 920.
  • the second 2-4 connection pattern 424 extends from the first electrode terminal 910a of the first temperature sensor 910 to the first electrode terminal 920a of the second temperature sensor 920, The first electrode terminal 910a of the first temperature sensor 910 and the first electrode terminal 920a of the second temperature sensor 920 can be electrically connected.
  • the second-fourth connecting pattern 424 extends from the first electrode terminal 910a of the first temperature sensor 910 to the second outside region B of the opening 450 to form the outside of the opening 450 .
  • the second-fourth connecting pattern 424 extending to the outside of the opening 450 extends along the outside of the opening 450 to a region where the second temperature sensor 920, which is the third outside region C of the opening 450, Can be extended and arranged.
  • the second 2-4 connection pattern 424 may be adjacent to the opening 450 when extending along the outside of the opening 450.
  • the second-fourth connection pattern 424 extended to the third region C of the opening 450 may extend to the first electrode terminal 920a of the second temperature sensor 920.
  • the wireless charging apparatus includes a first temperature sensor 910, a second temperature sensor 920, and a 2-1 connection pattern to a 2-4 connection pattern 421-424,
  • the temperature of the heat generated in the first to third wireless charging coils 610 to 620 can be accurately measured even in a simple structure. The temperature measurement method will be described later in Fig.
  • the fourth connection pattern 440 may extend from the fourth via hole h4 to the fifth via hole h5 and may electrically connect the fourth via hole h4 and the fifth via hole h5. That is, the first wireless communication pattern 510 and the second wireless communication pattern 520 disposed on the upper surface 400a of the substrate 400 are connected to the fourth via hole h4, the fourth connection pattern 440, (h5). Accordingly, the wireless communication coil 500 can form one coil.
  • FIG. 9 is a perspective view of a wireless charging coil module and a shielding agent of a wireless charging device according to an embodiment.
  • the first to third wireless charging coils 610 to 630 which are wireless charging coil modules, are disposed in the shield member 700. As shown in FIG.
  • the second wireless charging coil and the third wireless charging coils 620 and 630 disposed in the first layer are arranged in the same direction with the short axis and the long axis .
  • the first wireless charging coil 610 disposed on the second layer is disposed in such a manner that the second wireless charging coil 620 and the third wireless charging coils 620 and 630 disposed in the first layer are shifted in the direction of 90 ° from the minor axis .
  • the charging coil connection part of the wireless charging coil may be connected to the first inner pad and may be connected to the cable entry / exit part 710 of the shielding material 700 when connected. More specifically, the first-first charging coil connecting portion 611 and the first-second charging coil connecting portion 612 of the first wireless charging coil 610, the second-1 charging coil 620 of the second wireless charging coil 620, The connecting portion 621 and the 2-2 charging coil connecting portion 622 and the 3-1 charging coil connecting portion 631 and the 3-2 charging coil connecting portion 623 of the third wireless charging coil 630 are connected to the shielding material 700 To the first to sixth inner pads IP1 to IP6 disposed on the lower surface 400b of the substrate 400 after extending to the cable entry / Accordingly, the soldering process between the charging coil connecting portion and the inner pad can be facilitated.
  • the charging coil connection portions connected to the inside of the second wireless charging coil 620 and the third wireless charging coil 630 are disposed to surround the first wireless charging coil 610 and can support the substrate 400 . More specifically, a portion 622a of the second-second charging coil connection portion 622 extends from the inside of the second wireless charging coil 620 and is located on the upper side of the second wireless charging coil 620, And may be disposed corresponding to a part of the outer side of the coil 610. A part 631a of the third charging coil connection part 631 extends from the inside of the third wireless charging coil 630 and is located above the third wireless charging coil 630 and is connected to the first wireless charging coil 610, As shown in FIG. One part 622a of the 2-2 charging coil connection part 622 and one part 631a of the 3-1 charging coil connection part 631 come into contact with the lower surface 400b of the substrate 400, . ≪ / RTI >
  • the adhesive or the adhesive member may be disposed on the upper surface 620a of the second wireless charging coil 620 and the upper surface 630a of the third wireless charging coil 630 to connect the second wireless charging coil 620 and the substrate 400
  • the third wireless charging coil 630 and the substrate 400 can be fixed to each other.
  • the first to third heat dissipating holes 721 to 723 disposed in the shielding material 700 may be disposed corresponding to the first to third wireless charging coils 610 to 630.
  • the first heat dissipating hole 721 of the shielding material 700 is disposed inside the second wireless charging coil 620 and may be disposed so as not to overlap with the first wireless charging coil 610.
  • the second heat dissipating hole 722 of the shield member 700 may be disposed inside the first wireless charging coil 610 and may be disposed so as not to overlap with the second wireless charging coil 620 and the third wireless charging coil 630 .
  • the third heat dissipating hole 731 of the shield member 700 is disposed inside the third wireless charging coil 630 and may be disposed so as not to overlap with the first wireless charging coil 610.
  • FIG. 10 is a front view of a wireless charging device for explaining a connection pin and a connection pin supporter according to an embodiment
  • FIG. 11 is a side view of a wireless charging device for explaining a connection pin and a connection pin supporter according to an embodiment.
  • a wireless charging apparatus may include a plurality of connection pins.
  • the plurality of connection pins may be disposed corresponding to the plurality of outer pads disposed on the lower surface 400b of the substrate 400.
  • the plurality of connection pins may be electrically connected to the plurality of outer pads.
  • the plurality of connection pins can be connected to an external device to output or receive signals. More specifically, the plurality of connection pins may include first to eleventh connection pins P1 to P11.
  • the first to eleventh connection pins P1 to P11 may be arranged corresponding to the first to eleventh outer pads OP1 to OP11 in order. For example, as shown in FIG.
  • the first to eleventh connection pins P1 to P11 may be arranged to be shifted from each other. That is, since the first outer pad OP1 is disposed on the inner side of the substrate 400 than the second outer pad OP2, the first connection pin P1 can be disposed inside the second connection pin P2 .
  • the third to eleventh connection pins P3 to P11 may be disposed corresponding to the third to eleventh outer pads OP3 to OP11 like the first and second connection pins P1 and P2.
  • the wireless charging device may include a connection pin supporter PS1.
  • the connection pin supporter PS1 can firmly fix the plurality of connection pins to the substrate 400 and protect the plurality of connection pins.
  • the connection pin supporter PS1 may be disposed on the lower surface 400b of the substrate 400 corresponding to the plurality of connection pins.
  • the area of the connection pin supporter PS1 may be larger than the area where the plurality of connection pins are disposed.
  • FIG. 12 is a flowchart illustrating a method of measuring a temperature of a wireless charging device according to an embodiment.
  • the method for measuring the temperature of the wireless charging device may include determining whether the control unit of the wireless charging device is driving the first wireless charging coil located at the center (S1201). That is, the wireless charging device can determine whether the first wireless charging coil located in the center of the first through third wireless charging coils is driven.
  • the method for measuring the temperature of the wireless charging device may include a first temperature measurement by the first temperature sensor and a second temperature measurement by the second temperature sensor (S1202). have. 8, when heat is generated in the first wireless charging coil, a resistance value of the second-second connection pattern 422 and the second-third connection pattern 423 adjacent to the first wireless charging coil May be changed depending on the temperature.
  • the first temperature sensor 910 can measure the first temperature corresponding to the changed resistance value of the second-second connection pattern 422.
  • the second temperature sensor 920 can measure the second temperature corresponding to the changed resistance value of the second and third connection patterns 423.
  • the method of measuring the temperature of the wireless charging device may include the step of correcting the measured first temperature value and the measured second temperature value (S1203).
  • the first temperature sensor 910 is adjacent to the second wireless charging coil, the temperature of the second wireless charging coil can be accurately measured, but is separated from the first wireless charging coil.
  • the second temperature sensor 920 is adjacent to the third wireless charging coil, it can accurately measure the temperature of the third wireless charging coil, but is spaced apart from the first wireless charging coil. Accordingly, the first temperature value measured at the first temperature sensor 910 and the second temperature value measured at the second temperature sensor 920 may be used to determine the correct temperature of the first wireless charging coil.
  • the correction value obtained by adding the offset value to the measured first temperature value may be a corrected first temperature value of the first wireless charging coil.
  • the correction value obtained by adding the offset value to the measured second temperature value can be used as the corrected second temperature value of the first wireless charging coil.
  • the correction value obtained by adding the weight to the measured first temperature value may be the corrected first temperature value of the first wireless charging coil.
  • the correction value obtained by adding the weight to the measured second temperature value can be used as the corrected second temperature value of the first wireless charging coil.
  • the method of measuring the temperature of the wireless charging device may include determining (S1204) the temperature of the first wireless charging coil using the corrected first temperature value and the second temperature value.
  • the temperature of the first wireless charging coil may be a corrected first temperature value.
  • the temperature of the first wireless charging coil can be set to the corrected second temperature value.
  • the temperature of the first wireless charging coil may be an average value of the corrected first temperature value and the second temperature value.
  • the method of measuring the temperature of the wireless charging device may include determining whether the control unit of the wireless charging device is driving the second wireless charging coil adjacent to the first wireless charging coil (S1205) . That is, the wireless charging device can determine whether the second wireless charging coil located at one side of the first to third wireless charging coils is driven.
  • the method of measuring the temperature of the wireless charging device may include the step of measuring the first temperature by the first temperature sensor (S1206).
  • the method of measuring the temperature of the wireless charging device may include determining a temperature of the second wireless charging coil (S1207). That is, the measured first temperature value can be determined as the temperature of the second wireless charging coil.
  • the method of measuring the temperature of the wireless charging device may include a step (S1208) of determining that the third wireless charging coil is driven.
  • the method of measuring the temperature of the wireless charging device may include the step of measuring the second temperature by the second temperature sensor (S1209).
  • the method of measuring the temperature of the wireless charging device may include determining a temperature of the third wireless charging coil (S1210). That is, the measured second temperature value can be determined as the temperature of the third wireless charging coil.
  • the wireless charging device can measure the internal temperature with a simple structure. Also, the wireless charging device according to one embodiment can accurately measure the internal temperature.
  • Embodiments can be applied to the field of wireless charging.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne un dispositif de charge sans fil ayant une bobine de communication sans fil. Le dispositif de charge sans fil ayant la bobine de communication sans fil, selon un mode de réalisation, comprend : un substrat comprenant une ouverture; la bobine de communication sans fil agencée au niveau d'une surface supérieure du substrat; un module de bobine de charge sans fil comprenant une première bobine de charge sans fil qui est disposée dans l'ouverture; et un ou plusieurs capteurs de température disposés au niveau d'une surface inférieure du substrat.
PCT/KR2018/007441 2017-07-12 2018-06-29 Dispositif de charge sans fil ayant une bobine de communication sans fil Ceased WO2019013480A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020170088628A KR20190007321A (ko) 2017-07-12 2017-07-12 무선 통신 코일을 구비한 무선충전장치
KR10-2017-0088628 2017-07-12

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WO2019013480A1 true WO2019013480A1 (fr) 2019-01-17

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PCT/KR2018/007441 Ceased WO2019013480A1 (fr) 2017-07-12 2018-06-29 Dispositif de charge sans fil ayant une bobine de communication sans fil

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KR (1) KR20190007321A (fr)
WO (1) WO2019013480A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113178952A (zh) * 2021-04-25 2021-07-27 北京小米移动软件有限公司 一种无线充电设备和无线充电系统
CN117439281A (zh) * 2023-12-19 2024-01-23 深圳市美仕奇科技有限公司 一种具有过热保护装置的无线充电器

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