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WO2019031814A1 - Appareil de charge sans fil pourvu d'une bobine de communication sans fil - Google Patents

Appareil de charge sans fil pourvu d'une bobine de communication sans fil Download PDF

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Publication number
WO2019031814A1
WO2019031814A1 PCT/KR2018/008963 KR2018008963W WO2019031814A1 WO 2019031814 A1 WO2019031814 A1 WO 2019031814A1 KR 2018008963 W KR2018008963 W KR 2018008963W WO 2019031814 A1 WO2019031814 A1 WO 2019031814A1
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WO
WIPO (PCT)
Prior art keywords
coil
wireless communication
wireless charging
wireless
pattern
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/KR2018/008963
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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 WO2019031814A1 publication Critical patent/WO2019031814A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • 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
    • H02J4/25—
    • 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
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/263—Multiple coils at either side
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H04B5/26—Inductive coupling using coils
    • H04B5/266—One coil at each side, e.g. with primary and secondary coils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer

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 in which wireless charging efficiency is not reduced.
  • the present invention also provides a wireless charging device having a wireless communication coil that extends the recognition area of wireless communication.
  • a wireless charging apparatus including: a wireless charging coil module including at least one wireless charging coil; A substrate disposed on an upper surface of the wireless charging coil module; A wireless communication coil disposed on the upper surface of the substrate; And a terminal portion disposed on the bottom surface of the substrate and electrically connected to the wireless communication coil through a via hole.
  • the wireless communication coil may include one wireless communication coil pattern extending from the terminal portion.
  • the wireless communication coil pattern may include a pair of wireless communication coil patterns branched in an area overlapping with the wireless charging coil module.
  • the width of the wireless communication coil pattern may be a predetermined width that does not reduce the wireless charging efficiency.
  • the predetermined width may be 0.2 mm or more and 0.4 mm or less.
  • the wireless charging coil module includes first to third wireless charging coils, and the pair of wireless communication coil patterns are overlapped with the first to third wireless charging coils .
  • the width of one wireless communication coil pattern extending from the terminal portion is a first width
  • the width of the one pair of wireless communication coil patterns is a width 2
  • the first width may be greater than the second width
  • the second width may be 0.2 mm or more and 0.4 mm or less.
  • the pair of wireless communication coil patterns may be spaced apart from each other by a first distance which does not reduce the wireless charging efficiency.
  • the first distance may be 1 mm or more.
  • the wireless communication coil may be arranged to be turned a plurality of times, and the wireless communication coil pattern may include the pair of wireless communication coil patterns.
  • the neighboring pair of wireless communication coil patterns may be spaced apart from each other by a second distance that does not reduce wireless charging efficiency.
  • the second distance may be 2 mm or more.
  • the wireless charging coil module may include first to third wireless charging coils, and the pair of wireless communication coil patterns may include the first wireless charging coil They can be arranged in a superimposed manner.
  • the width of one wireless communication coil pattern extending from the terminal portion is a first width
  • the width of the one pair of wireless communication coil patterns is a width 2
  • the first width may be greater than the second width
  • the second width may be 0.2 mm or more and 0.4 mm or less.
  • the pair of wireless communication coil patterns may be spaced apart from each other by a first distance which does not reduce the wireless charging efficiency.
  • the first distance may be 1 mm or more.
  • the one pair of wireless communication coil patterns may be arranged to be turned at least once.
  • a wireless charging device includes: a wireless charging coil module including at least one wireless charging coil; A substrate disposed on an upper surface of the wireless charging coil module; A wireless communication coil disposed on the upper surface of the substrate and including one wireless communication coil pattern extending from the terminal portion; And a terminal portion disposed on the lower surface of the substrate and electrically connected to the wireless communication coil through a via hole, wherein the wireless communication coil pattern is disposed so as to overlap with the wireless charging coil module, May be a predetermined width that does not reduce the wireless charging efficiency.
  • the predetermined width may be 0.2 mm or more and 0.4 mm or less.
  • the wireless charging apparatus may include one pair of wireless communication coil patterns that are branched in an area overlapping the wireless charging coil module.
  • the pair of wireless communication coil patterns may be spaced apart from each other by a first distance which does not reduce the wireless charging efficiency.
  • the wireless charging coil module includes first to third wireless charging coils, and the pair of wireless communication coil patterns are overlapped with the first to third wireless charging coils .
  • the wireless charging coil module may include first to third wireless charging coils, and the pair of wireless communication coil patterns may include the first wireless charging coil They can be arranged in a superimposed manner.
  • 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 in which wireless charging efficiency is not reduced.
  • the present invention also provides a wireless charging device having a wireless communication coil that extends the recognition area of wireless communication.
  • 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 bottom plan view of the substrate of a wireless charging device according to one embodiment.
  • FIG. 6 is a top plan view of a substrate of a wireless charging device according to one embodiment.
  • FIG. 7 is a bottom plan view of a substrate of a wireless charging device according to one embodiment.
  • FIG. 8 is a top plan view of a wireless charging apparatus according to another embodiment.
  • FIG. 9 is a top plan view of a wireless charging device according to another embodiment.
  • FIG. 10 is a top plan view of a substrate of a wireless charging apparatus according to still another embodiment of FIG.
  • FIG. 11 is a bottom plan view of the substrate of the wireless charging device of another embodiment of Fig.
  • the terms used in the embodiments of the present invention are intended to illustrate the embodiments and are not intended to limit the present invention.
  • the singular forms may include plural forms unless otherwise specified in the text, and may be combined as A, B, and C when described as "at least one (or more than one) of B and C" ≪ / RTI > and any combination thereof.
  • terms such as 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 are not limited to 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 current sensor 250, a temperature sensor 260 A storage unit 270, a fan 280, a timer 290, a short range communication unit 201, and a wireless communication coil 202. 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 supply unit 100 may provide power supply.
  • the power supply unit 100 may correspond to a battery built in the wireless power transmitter 200 and may be an external power supply.
  • the embodiment is not limited to the form of the power supply unit 100.
  • 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 100 into a DC power having a specific intensity according to a control signal of the controller 240.
  • 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 current sensor 250 can measure an input current input to the driving unit 221.
  • the current sensor 250 may provide the measured input current value to the control unit 240.
  • the control unit 240 may adaptively cut off the power supply from the power supply unit 100 or block the supply of power to the amplifier 212 based on the input current value measured by the current sensor 250 have.
  • the temperature sensor 260 may measure the internal temperature of the wireless power transmitter 200 and provide the measurement result to the control unit 240. More specifically, the temperature sensor 260 may include one or more temperature sensors. One or more temperature sensors may be arranged corresponding to the transmission coil 223 of the power transmission unit 220 to measure the temperature of the transmission coil 223. [ For example, the control unit 240 may adaptively cut off the power supply from the power supply unit 100 or block the power supply to the amplifier 212 based on the temperature value measured by the temperature sensor 260 . To this end, 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 100 or cut off power supplied to the amplifier 212. In another example, the control unit 240 may adjust the intensity of the power supplied to the power transfer unit 220 based on the temperature value measured by the temperature sensor 260. Thus, the wireless power transmitter according to the embodiment can prevent the internal circuit from being damaged due to overheating.
  • the power transmitting unit 220 transmits the power signal output from the power converting unit 210 to the wireless power receiver.
  • the power transmitting unit 220 may include a driving unit 221, a selecting unit 222, and one or more transmitting coils 223.
  • the driving unit 221 may generate an AC power signal having an AC component having a specific frequency inserted into the DC power signal output from the power conversion unit 210 and transmit the generated AC power signal to the transmission coil 223.
  • the frequencies of the AC power signals transmitted to the plurality of transmission coils included in the transmission coil 223 may be the same or different from each other.
  • the selecting unit 222 may receive an AC power signal having a specific frequency from the driving unit 221 and may transmit the AC power signal to the transmitting coil selected from among the plurality of transmitting coils.
  • the coil selector 222 may control the AC power signal to be transmitted to the transmission coil selected by the controller 240 according to a predetermined control signal of the controller 240.
  • the selection unit 222 may include a switch (not shown) for connecting LC resonance circuits corresponding to the plurality of transmission coils 223.
  • the selection unit 222 may be omitted from the power transmission unit 220 when the transmission coil 223 is configured as one transmission coil.
  • the transmitting coil 223 may include at least one transmitting coil and may transmit the AC power signal received from the selecting unit 222 to the receiver through the corresponding transmitting coil.
  • the transmission coil 223 may include first to n-th transmission coils.
  • the selection unit 222 may be implemented with a switch as shown in FIG. 4 or a multiplexer (not shown).
  • the transmission coil 223 may include one capacitor (not shown) connected in series with the plurality of transmission coils to implement the LC resonance circuit. One end of the capacitor (not shown) may be connected to the transmission coil 223 and the other end may be connected to the driving unit 221.
  • the 'corresponding transmission coil' may mean a transmission coil having a state capable of being coupled by the electromagnetic field to the reception coil of a wireless power receiver qualified to receive power wirelessly.
  • the controller 240 may determine a transmission coil to be used for wireless power transmission among a plurality of transmission coils provided based on a signal strength indicator received in response to a digital ping signal transmitted for each transmission coil You can choose dynamically.
  • the control unit 240 may control the selector 222 or the multiplexer (not shown) so that the detection signals may be sequentially transmitted through the first to n-th transmission coils 223 during the first detection signal transmission procedure have. At this time, the control unit 240 can identify the time at which the sensing signal is transmitted using the timer 290. When the sensing signal transmission time comes, the controller 240 controls the selector 222 or the multiplexer So that the detection signal can be transmitted through the transmission coil. For example, the timer 290 can send 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 selects the event signal from the selection unit 222 or the multiplexer So that the digital ping can be transmitted through the corresponding transmission coil.
  • the modulation unit 231 may modulate the control signal generated by the control unit 240 and transmit the modulated control signal to the driving unit 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 transmission coil 223, as well as exchange various information with the wireless power receiver through the transmission coil 223.
  • the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmission coils 223 (i.e., first through n-th transmission coils) It should be noted that it may also perform in-band communication with the receiver.
  • the storage unit 270 stores the input current value of the wireless power transmitter according to the charging status of the wireless power receiver, the charging power intensity, the charging stoppage, the temperature of the wireless power transmitter for charging restart, Operation status, fan RPM, and the like.
  • the fan 280 may be rotated by the motor to cool the superheated wireless power transmitter 200.
  • the fan 280 may be arranged in correspondence with a configuration in which the degree of overheating is severe.
  • the fan 280 may be disposed corresponding to the power transmitting unit 220. More specifically, the fan 280 may be disposed corresponding to the transmission coil 223 of the power transmission unit 220.
  • the controller 240 can operate the fan 280 according to the state of charge of the wireless power receiver.
  • the short-range communication unit 201 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.
  • RFID Radio Frequency IDentification
  • the wireless communication coil 280 may transmit and receive 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 bottom plan view of a substrate of a wireless charging apparatus according to an embodiment.
  • a wireless charging apparatus may include a substrate 400.
  • the substrate 400 may be disposed on the wireless charging coil modules 610, 620, 630. Further, the substrate 400 can be rigid.
  • the rigid substrate 400 may support the wireless communication coil 500 disposed on the upper surface, the wireless charging coil modules 610, 620, 630 disposed on the lower surface, the shielding material (not shown), and the like.
  • the area of the substrate 400 may be larger than the area of the wireless communication coil 500 disposed at the upper portion, the wireless charging coil modules 610, 620, 630 disposed at the lower portion, the shielding material, and the radiation member.
  • the substrate 400 may include terminal portions on the lower surface 400b.
  • the terminal portion may include a plurality of connection patterns 411 to 413, a plurality of outer pads OP1 to OP8, and a plurality of via holes h1 to h7.
  • the plurality of connection patterns may include first to third connection patterns 411 to 413.
  • the plurality of outer pads may include first to eighth outer pads OP1 to OP8.
  • the plurality of via holes may include first through seventh via holes h1 through h7.
  • 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 510 arranged. More specifically, the wireless communication coil 500 may include a wireless communication coil pattern 510 disposed on the top surface of the substrate 400 and a wireless communication coil connection pattern 520 disposed on the bottom surface of the substrate 400 . That is, the wireless communication coil pattern 510 and the wireless communication coil connection pattern 520 may be connected together to form the wireless communication coil 500. That is, the wireless communication coil 500 may be arranged by turning the wireless communication coil pattern 510 and the wireless communication coil connection pattern 520 one or more times from one end to the other end.
  • the wireless communication coil 500 may be disposed in a superimposed manner with the wireless charging coil modules 610, 620, and 630 disposed below the substrate 400.
  • the wireless communication coil 500 may include a plurality of wireless charging coils 610, 620, and 630.
  • the wireless charging coil module may include a plurality of wireless charging coils 610, 620, and 630, (610, 620, 630).
  • the wireless communication coils 500 may include a plurality of wireless charging coils 610, 620, 630 may be overlapped with each other.
  • the wireless communication coil 500 can be arranged so that the width of the coil pattern is set small so that no shaded region of wireless charging is generated. Shaded areas of wireless charging may refer to areas where wireless charging efficiency is reduced.
  • the wireless communication coil 500 may be disposed at a predetermined width such that the entire coil pattern does not generate shaded regions of wireless charging.
  • the wireless communication coil 500 may be disposed at a predetermined width such that a shadow region of wireless charging does not occur in a region where the coil pattern overlaps with the wireless charging coil modules 610, 620, and 630.
  • the predetermined width may be 0.2 mm or more and 0.4 mm or less. More specifically, the predetermined width may be 0.3 mm.
  • the interference caused by the wireless communication coil 500 can be minimized by the wireless power generated by the wireless charging coil modules 610, 620, and 630. That is, even if the wireless communication coil 500 is disposed in the charging region of the wireless charging coil modules 610, 620, and 630, the wireless charging efficiency is not reduced.
  • the wireless communication coil 500 may be branched into a plurality of patterns in a region where a coil pattern through which one signal flows overlaps with the wireless charging coil modules 610, 620, and 630. Accordingly, the resistance of the wireless communication coil pattern 510 can be reduced to maintain the intensity of the signal flowing through the wireless communication coil 500.
  • the wireless communication coil pattern extends in one coil pattern at the terminal portion of the substrate 400 and is disposed in a region overlapping the wireless charging coil modules 610, 620, and 630 disposed at the lower portion of the substrate 400, Coil pattern.
  • the plurality of branched coil patterns may be spaced apart from each other by a first distance so that a shaded area of wireless charging does not occur.
  • a plurality of wireless communication connection patterns may be spaced apart from each other by a first distance so that shadow areas of wireless charging do not occur.
  • the first distance may be at least 1 mm. More specifically, the first distance may be 2 mm.
  • the neighboring coil patterns may be spaced apart from each other by a second distance such that shadow regions of wireless charging do not occur.
  • the second distance may be greater than the first distance.
  • the second distance may be at least 2 mm. More specifically, the second distance may be 3 mm.
  • the wireless charging device according to the embodiment of the present invention is arranged such that the wireless charging coil modules 610, 620, 630 and the wireless communication coil 500 are overlapped but the wireless charging efficiency is not reduced.
  • the wireless charging device according to one embodiment can expand the recognition area of wireless communication. A detailed description of the wireless communication coil 500 will be described later.
  • the wireless charging device may include wireless charging coil modules 610, 620, 630.
  • the wireless charging coil module may include one or more wireless charging coils 610, 620, 630.
  • One or more wireless charging coils 610, 620, 630 may be one or more transmit coils of a wireless power transmitter or one or more receive coils of a wireless power receiver.
  • each of the wireless charging coils 610, 620, 630 may be wound with the same number of turns. But may be wound in different numbers of turns.
  • the plurality of wireless charging coils 610, 620, and 630 may have the same inductance.
  • the present invention is not limited thereto and different inductances may be provided.
  • the plurality of wireless charging coils 610, 620, 630 may be arranged in one or more layers. More specifically, 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 on the same layer, i.e., the first layer. The first wireless charging coil 610 may be disposed on the second layer above the second wireless charging coil 620 and the third wireless charging coil 630. Accordingly, the plurality of wireless charging coils 610, 620, and 630 may be disposed on different layers to expand the charging area so that wireless power can be efficiently transmitted.
  • the wireless charging device may include a shielding material (not shown).
  • a shielding member (not shown) may be disposed on the lower surface of the wireless charging coil module 610, 620, 630.
  • a shielding material (not shown) may be disposed on the lower surface 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 member (not shown) and the lower surface of the second wireless charging coil 620 and the lower surface of the third wireless charging coil 630, 3 wireless charging coils 620 and 630 can be fixed.
  • the shielding member (not shown) can guide the wireless power generated by the wireless charging coil modules 610, 620, and 630 disposed in the upper portion in the charging direction and protect various circuits disposed below from the electromagnetic fields.
  • the wireless charging device may include a heat dissipating member (not shown).
  • the radiation member (not shown) may be disposed on the lower surface of the shielding member (not shown).
  • an adhesive or an adhesive member may be disposed between the upper surface of the heat dissipating member (not shown) and the lower surface of the shielding member (not shown) to fix the heat dissipating member (not shown) and the shielding member .
  • the radiation member (not shown) may be a material having a high thermal conductivity or a high thermal emissivity.
  • the wireless charging apparatus is capable of wireless communication and wireless charging.
  • the wireless communication coil and the wireless charging coil are disposed to overlap with each other, the wireless charging apparatus according to the embodiment can be miniaturized.
  • FIG. 6 is a top plan view of a substrate of a wireless charging device according to an embodiment
  • FIG. 7 is a bottom plan view of a substrate of a wireless charging device according to an embodiment.
  • the wireless communication coil 500 of the wireless charging device may be arranged to be turned three times from one end to the other end by electrically connecting the wireless communication coil pattern and the wireless communication coil connection pattern.
  • a wireless communication coil pattern 510 may be disposed on an upper surface 400a of the substrate 400.
  • the wireless communication coil pattern 510 may be a plurality of coil patterns. More specifically, the wireless communication coil pattern 510 may include first through sixth coil patterns 511 through 516. The first through sixth coil patterns 511 through 516 may be sequentially connected to each other. In addition, the first to fourth coil patterns 511 to 514 may be arranged to turn from the inside to the outside. Further, the fifth to sixth coil patterns 515 to 516 may be arranged to be turned from the inside to the outside. The fifth coil pattern 515 may be electrically connected by the first coil pattern 511 and the wireless communication coil connection pattern 520 disposed on the lower surface 400b of the substrate 400. [ Further, the fifth to sixth coil patterns 515 to 516 may be arranged inside the substrate 400 more than the first to fourth coil patterns 511 to 514.
  • the first coil pattern 511 may have one end connected to the first via hole h1 and the other end connected to one end of the second coil pattern 512.
  • the first coil pattern 511 may extend in the counterclockwise direction from the first via hole h1 to the second coil pattern 512.
  • the first coil pattern 511 may be arranged in one coil pattern.
  • the first via hole h1 may electrically connect the first coil pattern 511 and the first connection pattern 411 disposed on the lower surface 400b of the substrate 400.
  • the second coil pattern 512 may have one end connected to the other end of the first coil pattern 511 and the other end connected to one end of the third coil pattern 512.
  • the second coil pattern 512 may extend in the counterclockwise direction in the first coil pattern 511 to the third coil pattern 513.
  • the second coil pattern 512 may include a second-1 coil pattern 512a and a second -2 coil pattern 512b branched from the first coil pattern 511. [ That is, the second-1 coil pattern 512a and the second -2 coil pattern 512b can have the same electrical signal flowing in the first coil pattern 511. [ The second coil pattern 512a may be disposed on the outer side of the substrate 400 than the second coil pattern 512b. The third coil pattern 513 may have one end connected to the other end of the second coil pattern 512 and the other end connected to one end of the fourth coil pattern 514. [ The third coil pattern 513 may extend in the counterclockwise direction in the second coil pattern 512 and may be disposed up to the fourth coil pattern 514. The third coil pattern 513 may be arranged in one coil pattern.
  • a third via hole h3 may be disposed in the middle of the third coil pattern 513.
  • the third via hole h3 can electrically connect the third coil pattern 513 and the third connection pattern 413 disposed on the lower surface 400b of the substrate 400.
  • the fourth coil pattern 514 may have one end connected to the other end of the third coil pattern 513 and the other end connected to the fourth via hole h4 and the sixth via hole h6.
  • the fourth coil pattern 514 may extend in the counterclockwise direction in the third coil pattern 513 to the fourth via hole h4 and the sixth via hole h6.
  • the fourth coil pattern 514 may include a fourth coil pattern 514a and a fourth coil pattern 514b branched from the third coil pattern 513.
  • the electrical signals flowing through the third coil pattern 513 may flow in the same manner as the fourth-first coil pattern 514a and the fourth-coil pattern 514b.
  • the 4-1 coil pattern 514a may be arranged outside the substrate 400 rather than the 4-2 coil pattern 514b.
  • the fourth coil pattern 514a may extend from the third coil pattern 513 and may be connected to the fourth via hole h4.
  • the fourth-coil pattern 514b may extend from the third coil pattern 513 and may be connected to the sixth via hole h6.
  • the fourth via hole h4 may be electrically connected to the first wireless communication coil connection pattern 521a disposed on the lower surface 400b of the substrate 400 and the 4-1 coil pattern 514a.
  • the sixth via hole h6 may be electrically connected to the fourth wireless communication coil connection pattern 521b disposed on the lower surface 400b of the substrate 400.
  • the fifth coil pattern 515 may have one end connected to the fifth via hole h5 and the seventh via hole h7 and the other end connected to one end of the sixth coil pattern 516.
  • the fifth coil pattern 515 may extend in the counterclockwise direction from the fifth via hole h5 and the seventh via hole h7 to the sixth coil pattern 516.
  • the fifth coil pattern 515 may include a fifth coil pattern 515a and a fifth coil pattern 515b branched from the sixth coil pattern 516.
  • the fifth-coil pattern 515a may be disposed on the outer side of the substrate 400 than the fifth-coil pattern 514b. In this case, the fifth-coil pattern 515a may extend from the fifth via hole h5 and may be connected to the sixth coil pattern 516.
  • the fifth coil pattern 515b may extend from the seventh via hole h7 and may be connected to the sixth coil pattern 516.
  • the fifth via hole h5 may be electrically connected to the first wireless communication coil connection pattern 521a disposed on the bottom surface 400b of the substrate 400 and the fifth- The seventh via hole h7 may be electrically connected to the fifth coil pattern 515b and the second wireless communication coil connection pattern 521b disposed on the bottom surface 400b of the substrate 400.
  • the sixth coil pattern 516 may have one end connected to the other end of the fifth coil pattern 515 and the other end connected to the second via hole h2. In addition, the sixth coil pattern 516 may extend from the fifth coil pattern 515 to the second via hole h2.
  • the sixth coil pattern 516 may be arranged in one coil pattern.
  • the second via hole h2 can electrically connect the second coil pattern 512 and the second connection pattern 412 disposed on the lower surface 400b of the substrate 400.
  • the wireless communication coil pattern 510 can be arranged so that the width of the coil pattern is set small so that no shaded region of wireless charging occurs.
  • the wireless communication coil 500 may be disposed at a predetermined width (a) in which the entire coil pattern does not generate a shaded region of wireless charging.
  • the predetermined width (a) may be 0.2 mm or more and 0.4 mm or less. More specifically, the predetermined width (a) may be 0.3 mm. Accordingly, the wireless power generated by the wireless charging coil modules 610, 620, and 630 can minimize the interference due to the wireless communication coil. That is, even if the wireless communication coil 500 is disposed in the charging region of the wireless charging coil modules 610, 620, and 630, the wireless charging efficiency is not reduced.
  • the wireless communication coil pattern 510 is arranged at a predetermined width (a) in which no shaded area of wireless charging occurs in a region overlapping the wireless charging coil modules 610, 620 and 630, In the region where the charging coil modules 610, 620 and 630 are not overlapped with each other, the charging coil modules 610, 620 and 630 can be arranged with a width larger than a predetermined width a.
  • the wireless communication coil pattern 510 may be branched into a plurality of patterns in a region where a coil pattern in which one signal flows overlaps the wireless charging coil modules 610, 620, and 630. Accordingly, the resistance of the wireless communication coil pattern 510 can be reduced to maintain the intensity of the signal flowing through the wireless communication coil 500. More specifically, the wireless communication coil pattern 510 extends in one coil pattern at the terminal portion of the substrate 400 and overlaps with the wireless charging coil modules 610, 620, 630 disposed at the lower portion of the substrate 400 In a plurality of coil patterns. For example, it can be seen that the second coil pattern 512 connected to the first coil pattern 511 is composed of the second -1 coil pattern 512a and the second -2 coil pattern 512b.
  • the plurality of branched coil patterns may be spaced apart from each other by the first distance b so that the shaded region of the wireless charging does not occur.
  • the first distance b may be greater than or equal to 1 mm. More specifically, the first distance b may be 2 mm.
  • the neighboring coil patterns may not be a branched coil pattern, but may be spaced apart from each other by a second distance (b) so that shadow regions of wireless charging do not occur.
  • the neighboring coil patterns may refer to the 2-1 coil pattern 512a and the 4-2 coil pattern 514b.
  • the second distance c may be greater than the first distance b.
  • the second distance c may be greater than or equal to 2 mm. More specifically, the second distance c may be 3 mm.
  • the wireless charging device is arranged such that the wireless charging coil modules 610, 620, 630 and the wireless communication coil 500 are overlapped but the wireless charging efficiency is not reduced. Also, the wireless charging device according to one embodiment can expand the recognition area of wireless communication.
  • the first to eighth outer pads OP1 to OP8 may be disposed on one of the outermost regions of the lower surface 400b of the substrate 400.
  • the first to eighth outer pads OP1 to OP8 may be arranged in two rows. More specifically, the first to fourth outer pads OP1 to OP4 arranged in the same column may be arranged in the inner direction of the substrate 400 than the fifth to eighth outer pads OP5 to OP8 arranged in the same column. Thus, the area where the plurality of outer pads OP1 to OP8 are disposed can be reduced.
  • the present invention is not limited thereto, and a plurality of outer pads OP1 to OP8 may be arranged in a row. In this case, the bezel of the wireless charging device can be reduced.
  • the first to third connection patterns 411 to 413 may be disposed on the lower surface 400b of the substrate 400.
  • the first connection pattern 411 may extend from the first outer pad OP1 to the first via hole h1 and may electrically connect the first outer pad OP1 and the first via hole h1.
  • the first outer pad OP1 is electrically connected to the first coil pattern 511 of the wireless communication coil pattern 510 on the top surface 400a of the substrate 400 via the first connection pattern 411 and the first via hole h1
  • the second connection pattern 412 may extend from the third outer pad OP3 to the second via hole h2 and electrically connect the third outer pad OP3 and the second via hole h2.
  • the third outer pad OP2 is electrically connected to the sixth coil pattern 516 of the wireless communication coil pattern 510 on the upper surface 400a of the substrate 400 via the second connection pattern 412 and the second via hole h2 As shown in FIG.
  • the third connection pattern 413 extends from the second outer pad OP2 to the third via hole h3 and is electrically connected to the second outer pad OP2 and the third via hole h3.
  • the second outer pad OP2 is electrically connected to the third coil pattern 513 of the wireless communication coil pattern 510 on the top surface 400a of the substrate 400 via the third connection pattern 413 and the third via hole h3 As shown in FIG.
  • the wireless communication connection pattern 520 may be disposed on the lower surface 400b of the substrate 400.
  • the wireless communication connection pattern 520 may be plural. More specifically, the wireless communication connection pattern 520 may include a first wireless communication connection pattern 521a and a second wireless communication connection pattern 521b.
  • the first wireless communication connection pattern 521a 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 fourth-first coil pattern 514a and the fifth-first coil pattern 515a disposed on the upper surface 400a of the substrate 400 are connected to the fourth via hole h4, the first wireless communication connection pattern 521a, And the fifth via hole h5.
  • the second wireless communication connection pattern 521b may extend from the sixth via hole h6 to the seventh via hole h7 and may electrically connect the sixth via hole h6 and the seventh via hole h7.
  • the fourth to eighth coil patterns 514b and the fifth to eighth coil patterns 515b disposed on the upper surface 400a of the substrate 400 are connected to the 46th via hole h6 and the second wireless communication connection pattern 521b, And the seventh via hole h7. Accordingly, the wireless communication coil 500 can form one coil.
  • the wireless communication connection pattern 520 may be arranged at a predetermined width (a) at which no shaded area of wireless charging occurs.
  • each of the plurality of wireless communication connection patterns 520 may have a predetermined width a.
  • the first wireless communication connection pattern 521a and the second wireless communication connection pattern 521b may be arranged with a predetermined width a, respectively. Accordingly, the wireless power generated by the wireless charging coil modules 610, 620, and 630 can minimize the interference due to the wireless communication coil. That is, even if the wireless communication coil 500 is disposed in the charging region of the wireless charging coil modules 610, 620, and 630, the wireless charging efficiency is not reduced.
  • the plurality of wireless communication connection patterns 520 may be spaced apart from each other by a first distance b so that shadow areas of wireless charging do not occur.
  • the first wireless communication connection pattern 521a and the second wireless communication connection pattern 521b may be spaced apart from each other by a first distance b.
  • FIG. 8 is a top plan view of a wireless charging apparatus according to another embodiment.
  • the wireless charging apparatus according to another embodiment of FIG. 8 is different from the wireless communication coil 500 disposed on the substrate 400 in the wireless charging apparatus according to the embodiment of FIG.
  • the other embodiment of Fig. 8 will be described except for the same configuration as the wireless charging apparatus according to the embodiment of Fig.
  • the wireless communication coil pattern 1510 and the wireless communication coil connection pattern 1520 are electrically connected to each other through four turns . Accordingly, the wireless charging apparatus according to another embodiment can expand the recognition area of the wireless communication more than the wireless charging apparatus according to the embodiment.
  • FIG. 9 is a top plan view of a wireless charging apparatus according to another embodiment
  • FIG. 10 is a top plan view of a substrate of a wireless charging apparatus according to still another embodiment of FIG. 9, and FIG. Fig.
  • the wireless charging apparatus according to another embodiment of FIG. 9 will be described with the exception of the same configuration in the wireless charging apparatus according to one embodiment of FIGS.
  • a wireless charging apparatus may include a substrate 1400.
  • the substrate 1400 may be disposed on the wireless charging coil modules 610, 620, 630. Further, the substrate 1400 can be rigid.
  • the rigid substrate 1400 can support a wireless communication coil 2500 disposed on an upper surface thereof, wireless charging coil modules 610, 620 and 630 disposed on a lower surface thereof, a shielding material (not shown), and the like.
  • the area of the substrate 1400 may be larger than the areas of the wireless communication coil 2500 disposed at the upper portion, the wireless charging coil modules 610, 620, and 630 disposed at the lower portion, the shielding member, and the radiation member.
  • the substrate 1400 may include terminal portions on the lower surface 1400b.
  • the terminal portion may include a plurality of connection patterns 411 to 413, a plurality of outer pads OP1 to OP8, and a plurality of via holes h11 to h13.
  • the plurality of connection patterns may include a first connection pattern 411 to a third connection pattern 411 to 413.
  • the plurality of outer pads may include first to eighth outer pads OP1 to OP8.
  • the plurality of via holes may include first through thirteenth via holes h11 through h13.
  • the wireless charging device may include a wireless communication coil 2500.
  • the wireless communication coil 2500 may be disposed on the upper surface of the substrate 1400.
  • the wireless communication coil 2500 may be a wireless communication coil pattern 2510 arranged. More specifically, the wireless communication coil 2500 may include a wireless communication coil pattern 2510 disposed on the top surface of the substrate 1400 and a wireless communication coil connection pattern 2520 disposed on the bottom surface of the substrate 1400 . That is, the wireless communication coil pattern 2510 and the wireless communication coil connection pattern 2520 can be connected to form a wireless communication coil 2500. That is, the wireless communication coil 2500 may be arranged by turning the wireless communication coil pattern 2510 and the wireless communication coil connection pattern 2520 one or more times from one end to the other end.
  • the wireless communication coil 2500 may be disposed in superposition with the wireless charging coil modules 610, 620, and 630 disposed below the substrate 1400. 9, when the wireless charging coil module disposed below the substrate 1400 includes a plurality of wireless charging coils 610, 620 and 630, the wireless communication coil 2500 includes a plurality of wireless charging coils 610, 620, and 630 may overlap with each other. For example, the wireless communication coil 2500 may be disposed so that only the wireless charging coils disposed at the center among the plurality of wireless charging coils 610, 620, and 630 overlap.
  • the wireless communication coil 2500 is arranged to turn along the outer frame of the substrate 1400 in an area not overlapped with the wireless charging coil, and is arranged in a region overlapping the wireless charging coil, It can be arranged to turn inward. Accordingly, the wireless charging apparatus according to another embodiment minimizes the overlapped area between the wireless communication coil 2500 and the wireless charging coil modules 610, 620, and 630, thereby improving wireless charging efficiency Can be reduced.
  • the wireless communication coil 2500 can be arranged with a small width of the coil pattern so as not to generate a shaded region of wireless charging.
  • the wireless communication coil 2500 may be disposed at a first width in an area where the coil pattern does not overlap with the wireless charging coil modules 610, 620, and 630.
  • the wireless communication coil 2500 may be disposed at a second width such that a shadow region of wireless charging does not occur in a region where the coil pattern overlaps the wireless charging coil modules 610, 620, and 630.
  • the first width may be greater than the second width. More specifically, the first width may be 0.7 mm or more and 1.2 mm or less.
  • the second width may be 0.2 mm or more and 0.4 mm or less. More specifically, the second width may be 0.3 mm. Accordingly, the interference caused by the wireless communication coil 2500 can be minimized by the wireless power generated by the wireless charging coil modules 610, 620, and 630.
  • the wireless communication coil 2500 may be branched into a plurality of patterns in a region where a coil pattern in which one signal flows overlaps the wireless charging coil modules 610, 620, and 630.
  • the resistance of the wireless communication coil pattern 2510 can be reduced to maintain the intensity of the signal flowing through the wireless communication coil 2500. More specifically, the wireless communication coil pattern 2510 extends in one coil pattern at the terminal portion of the substrate 1400 and overlaps with the wireless charging coil module 610, 620, 630 disposed at the lower portion of the substrate 1400 In a plurality of coil patterns.
  • the plurality of branched coil patterns may be spaced apart from each other by a first distance so that a shaded area of wireless charging does not occur.
  • the plurality of wireless communication connection patterns 2520 may be spaced apart from each other by a first distance so that shadow areas of wireless charging do not occur.
  • the first distance may be at least 1 mm. More specifically, the first distance may be 2 mm. Therefore, in the wireless charging apparatus according to another embodiment, the wireless charging coil modules 610, 620, and 630 and the wireless communication coil 2500 are disposed in overlapping relation, but the wireless charging efficiency is not reduced. Further, the wireless charging device according to another embodiment can expand the recognition area of wireless communication. A detailed description of the wireless communication coil 2500 will be described later.
  • the wireless charging device may include a wireless charging coil module 610, 620, 630.
  • the wireless charging coil module may include one or more wireless charging coils 610, 620, 630.
  • One or more wireless charging coils 610, 620, 630 may be one or more transmit coils of a wireless power transmitter or one or more receive coils of a wireless power receiver.
  • each of the wireless charging coils 610, 620, 630 may be wound with the same number of turns. But may be wound in different numbers of turns.
  • the plurality of wireless charging coils 610, 620, and 630 may have the same inductance.
  • the present invention is not limited thereto and different inductances may be provided.
  • the plurality of wireless charging coils 610, 620, 630 may be arranged in one or more layers. More specifically, 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. Accordingly, the plurality of wireless charging coils 610, 620, and 630 may be disposed on different layers to expand the charging area so that wireless power can be efficiently transmitted.
  • the wireless charging device is capable of wireless communication and wireless charging.
  • the wireless communication coil and the wireless charging coil are arranged so as to overlap with each other, so that miniaturization is possible.
  • the wireless communication coil pattern 2510 and the wireless communication coil connection pattern 2520 are electrically connected to each other, And two turns in the central region of the substrate 1400. [0154] In addition, as shown in Fig.
  • a wireless communication coil pattern 2510 may be disposed on the upper surface 1400a of the substrate 1400.
  • the wireless communication coil pattern 2510 may be a plurality of coil patterns. More specifically, the wireless communication coil pattern 2510 may include first to eighth coil patterns 2511 to 2518. The first through ninth coil patterns 2511 through 2519 may be sequentially connected to each other. The first coil pattern, the fourth coil pattern, the fifth coil pattern, the sixth coil pattern, and the ninth coil pattern 2511, 2514, 2515, 2516, and 2519 may be disposed outside the substrate 1400. In addition, the second coil pattern, the third coil pattern, the seventh coil pattern, and the eighth coil patterns 2512, 2513, 2517, and 2518 may be disposed inside the substrate 1400.
  • the wireless communication coil pattern 2510 may form a plurality of turns together with the wireless communication coil connection pattern 2520 disposed on the lower surface 1400b of the substrate 1400.
  • the wireless communication coil 2500 may include first to fourth wireless communication coils.
  • the first to fourth wireless communication coils may each refer to one turn.
  • the first wireless communication coil may be formed of a first coil pattern 2511 and a fourth coil pattern 2544.
  • the second wireless communication coil may be formed of a ninth coil pattern 2519, a sixth coil pattern 2516, a second wireless communication connection pattern 1522, and a fifth coil pattern 2515.
  • the third wireless communication coil may be formed of a second coil pattern 2512, a first wireless communication connection pattern 2521, and a third coil pattern 1513.
  • the fourth wireless communication coil may be formed of an eighth coil pattern 2518, a third wireless communication connection pattern 1523, and a seventh coil pattern 2517. That is, the first and second wireless communication coils are disposed on the outer periphery of the substrate 1400, and the third and fourth wireless communication coils are overlapped with the first wireless charging coil 610 disposed inside the substrate 1400 . More specifically, the third and fourth wireless communication coils may be shaped to turn inside the first wireless charging coil 610.
  • the first coil pattern 2511 may have one end connected to the first via hole h11 and the other end connected to one end of the second coil pattern 512.
  • the first coil pattern 2511 may extend in the counterclockwise direction from the first via hole h11 to the second coil pattern 2512.
  • the first coil pattern 2511 may be arranged in one coil pattern.
  • the first via hole h11 can electrically connect the first coil pattern 2511 and the first connection pattern 411 disposed on the lower surface 1400b of the substrate 1400.
  • the second coil pattern 2512 may have one end connected to the other end of the first coil pattern 2511 and the other end connected to the fourth via hole h14 and the sixth via hole h16.
  • the second coil pattern 2512 extends from the other end of the first coil pattern 2511 to the inside of the substrate 1400 and turns once inside the first wireless charging coil 610 to form the fourth via hole h14, And the sixth via hole h16.
  • the second coil pattern 2512 may include a second-1 coil pattern 2512a and a second -2 coil pattern 2512b branched from the first coil pattern 2511. [ That is, the second-first coil pattern 2512a and the second-coil pattern 2512b can have the same electrical signal flowing in the first coil pattern 2511.
  • the 2-1 coil pattern 2512a may be arranged outside the substrate 1400 rather than the 2-2 coil pattern 2512b.
  • the second-1 coil pattern 2511a may extend from the first coil pattern 2511 and be connected to the fourth via hole h14.
  • the second coil pattern 2512b may extend from the first coil pattern 2511 and may be connected to the sixth via hole h16.
  • the fourth via hole h14 may be electrically connected to the 1-1 second wireless communication coil connection pattern 2521a disposed on the lower surface 1400b of the substrate 1400 with the 2-1 coil pattern 2512a.
  • the sixth via hole h16 may be electrically connected to the second -2 coil pattern 2514b and the 1-2 wireless communication coil connection pattern 2521b disposed on the lower surface 400b of the substrate 1400.
  • the third coil pattern 2513 may have one end connected to the fifth via hole h15 and the seventh via hole h17 and the other end connected to one end of the fourth coil pattern 2514.
  • the third coil pattern 2513 may extend from the fifth via hole h15 and the seventh via hole h17 to the fourth coil pattern 2514 in the outer direction of the substrate 1400.
  • the third coil pattern 2513 may include a third-first coil pattern 2513a and a third-second coil pattern 2513b branched from the fourth coil pattern 2514.
  • the third-coil pattern 2513a and the third-coil pattern 2513b can have the same electrical signal flowing in the fourth coil pattern 2514.
  • the third coil pattern 2513a may be disposed outside the substrate 1400 rather than the third coil pattern 2513b.
  • the third-first coil pattern 2513a may extend from the fifth via hole h15 and may be connected to the fourth coil pattern 2514.
  • the third coil pattern 2513b may extend from the seventh via hole h17 and may be connected to the fourth coil pattern 2514.
  • the fifth via hole h15 may be electrically connected to the first 1-1 wireless communication coil connection pattern 2521a disposed on the lower surface 1400b of the substrate 4100 and the 3-1 coil pattern 2513a.
  • the seventh via hole h17 may be electrically connected to the third -2 coil pattern 2513b and the 1-2th wireless communication coil connection pattern 2521b disposed on the lower surface 1400b of the substrate 1400.
  • the fourth coil pattern 2514 may have one end connected to the third coil pattern 2513 and the other end connected to the third via hole h13. In addition, the fourth coil pattern 2514 may extend in the counterclockwise direction in the third coil pattern 2513 to the third via hole h13. The fourth coil pattern 2514 may be arranged in one coil pattern. The third via hole h13 can electrically connect the fourth coil pattern 2514 and the third connection pattern 413 disposed on the lower surface 1400b of the substrate 1400. [ The fifth coil pattern 2515 may have one end connected to the third via hole h13 and the other end connected to the eighth via hole h18. The fifth coil pattern 2515 may extend in the counterclockwise direction from the third via hole h13 to the eighth via hole h18.
  • the fifth coil pattern 2515 may be arranged in one coil pattern.
  • the eighth via hole h18 may electrically connect the fifth coil pattern 2515 and the second wireless communication connection pattern 1522 disposed on the lower surface 1400b of the substrate 1400.
  • the sixth coil pattern 2516 may have one end connected to the ninth via hole h19 and the other end connected to one end of the seventh coil pattern 2517.
  • the sixth coil pattern 2516 may extend from the ninth via hole h19 in the counterclockwise direction to the seventh coil pattern 2517.
  • the sixth coil pattern 2516 may be arranged in one coil pattern.
  • the ninth via hole h19 can electrically connect the ninth coil pattern 2519 and the second wireless communication connection pattern 1522 disposed on the lower surface 1400b of the substrate 1400.
  • the seventh coil pattern 2517 may have one end connected to the other end of the sixth coil pattern 2516 and the other end connected to the tenth via hole h20 and the twelfth via hole h22.
  • the seventh coil pattern 2517 extends from the other end of the sixth coil pattern 2516 to the inside of the substrate 1400 and extends counterclockwise from the inside of the first wireless charging coil 510 to form a tenth via hole h20) and the twelfth via hole (h22).
  • the seventh coil pattern 2517 may include a seventh coil pattern 2517a and a seventh coil pattern 2517b branched from the sixth coil pattern 2516. [ That is, the seventh coil pattern 2517a and the seventh coil pattern 2517b can have the same electrical signal flowing in the sixth coil pattern 2516.
  • the seventh coil pattern 2517a may be disposed outside the substrate 1400 rather than the seventh coil pattern 2517b.
  • the seventh coil pattern 2517a may extend from the sixth coil pattern 2516 and be connected to the tenth via hole h20.
  • the seventh coil pattern 2517b may extend from the sixth coil pattern 2516 and may be connected to the twelfth via hole h22.
  • the tenth via hole h20 may be electrically connected to the 7-1 coil pattern 2517a and the 3-1 wireless communication coil connection pattern 2523a disposed on the lower surface 1400b of the substrate 1400.
  • the twelfth via hole h22 may be electrically connected to the 7-2 coil pattern 2517b and the 3-2 wireless communication coil connection pattern 2523b disposed on the lower surface 400b of the substrate 1400.
  • the eighth coil pattern 2518 may have one end connected to the eleventh via hole h21 and the thirteenth via hole h23 and the other end connected to one end of the ninth coil pattern 2519.
  • the eighth coil pattern 2518 may extend from the eleventh via hole h21 and the thirteenth via hole h23 to the ninth coil pattern 2519 in the outer direction of the substrate 1400.
  • the eighth coil pattern 2518 may include an eighth coil pattern 2518a and an eighth coil pattern 2518b branched from the ninth coil pattern 2519.
  • the eighth coil pattern 2518a may be disposed outside the substrate 1400 rather than the eighth coil pattern 2518b.
  • the eighth coil pattern 2518a may extend from the eleventh via hole h21 and may be connected to the ninth coil pattern 2519.
  • the eighth coil pattern 2518b may extend from the thirteenth via hole h23 and may be connected to the ninth coil pattern 2519.
  • the eleventh via hole h21 may be electrically connected to the 8-1 coil pattern 2518a and the 3-1 wireless communication coil connection pattern 2523a disposed on the lower surface 1400b of the substrate 4100.
  • the thirteenth via hole h23 may be electrically connected to the eighth coil pattern 2518b and the third-second wireless communication coil connection pattern 2523b disposed on the bottom surface 1400b of the substrate 1400.
  • the ninth coil pattern 2519 may have one end connected to the eighth coil pattern 2518 and the other end connected to the second via hole h12.
  • the ninth coil pattern 2519 may extend in the counterclockwise direction from the other end of the eighth coil pattern 2518 to the second via hole h12.
  • the ninth coil pattern 2519 may be arranged in one coil pattern.
  • the second via hole h12 can electrically connect the ninth coil pattern 2519 and the second connection pattern 412 disposed on the lower surface 1400b of the substrate 1400.
  • the second coil pattern 2512, the third coil pattern 2513, the seventh coil pattern 2517 and the eighth coil pattern 2518 overlapping the wireless charging coil modules 610, 620, And may be disposed in a second width.
  • the first coil pattern 2511, the fourth coil pattern 2514, the fifth coil pattern 2515, the sixth coil pattern 2516, and the sixth coil pattern 2516 arranged so as not to overlap with the wireless charging coil modules 610, 620, 9 coil pattern 2519 may be arranged with a first width.
  • the wireless communication coil pattern 2510 may be branched into a plurality of patterns in a region where a coil pattern in which one signal flows overlaps with the wireless charging coil modules 610, 620, and 630.
  • the resistance of the wireless communication coil pattern 2510 can be reduced to maintain the intensity of the signal flowing through the wireless communication coil 2500.
  • the wireless communication coil pattern 2510 extends in one coil pattern at the terminal portion of the substrate 1400 and overlaps with the wireless charging coil module 610, 620, 630 disposed at the lower portion of the substrate 1400 In a plurality of coil patterns.
  • the second coil pattern 2512 extended from the first coil pattern 2511 is composed of the second-1 coil pattern 2512a and the second -2 coil pattern 2512b.
  • the wireless charging coil module 610, 620, 630 and the wireless communication coil 2500 are disposed in a superimposed manner, the wireless charging efficiency according to the embodiment is not reduced. Also, the wireless charging device according to one embodiment can expand the recognition area of wireless communication.
  • the first outer pad through the eighth outer pads OP1 through OP8 may be disposed on one of the outermost regions of the lower surface 1400b of the substrate 1400.
  • the first to eighth outer pads OP1 to OP8 may be arranged in two rows. More specifically, the first to fourth outer pads OP1 to OP4 arranged in the same row can be arranged in the inner direction of the substrate 1400 than the fifth to eighth outer pads OP5 to OP8 arranged in the same column. Thus, the area where the plurality of outer pads OP1 to OP8 are disposed can be reduced.
  • the present invention is not limited thereto, and a plurality of outer pads OP1 to OP8 may be arranged in a row. In this case, the bezel of the wireless charging device can be reduced.
  • the first to third connection patterns 411 to 413 may be disposed on the lower surface 1400b of the substrate 1400.
  • the first connection pattern 411 extends from the first outer pad OP1 to the first via hole h1 and is electrically connected to the first outer pad OP1 and the first via hole h11. That is, the first outer pad OP1 is electrically connected to the first coil pattern 2511 of the wireless communication coil pattern 2510 on the top surface 400a of the substrate 400 via the first connection pattern 411 and the first via hole h11
  • the second connection pattern 412 may extend from the third outer pad OP3 to the second via hole h12 and electrically connect the third outer pad OP3 and the second via hole h12.
  • the third outer pad OP2 is connected to the ninth coil pattern 2519 of the wireless communication coil pattern 2510 of the top surface 1400a of the substrate 1400 via the second connection pattern 412 and the second via hole h12 As shown in FIG.
  • the third connection pattern 413 extends from the second outer pad OP2 to the third via hole h13 and can electrically connect the second outer pad OP2 and the third via hole h13.
  • the second outer pad OP2 is electrically connected to the fourth and fifth coils of the wireless communication coil pattern 2510 of the top surface 1400a of the substrate 1400 via the third connection pattern 413 and the third via hole h13, And may be electrically connected to the patterns 2514 and 2515.
  • the wireless communication connection pattern 2520 may be disposed on the lower surface 1400b of the substrate 1400.
  • the wireless communication connection pattern 2520 may be plural. More specifically, the wireless communication connection pattern 2520 may include first to third wireless communication connection patterns 2521 to 2523. More specifically, the first wireless communication connection pattern 2521 extends S-shaped from the fourth and sixth via holes h14 and h16 to the outside of the substrate 1400 to form a fifth via hole h15 and a seventh via hole h17.
  • the first wireless communication connection pattern 2521 may include a 1-1 wireless communication connection pattern 2521a and a 1-2 wireless communication connection pattern 2521b.
  • the 1-1 wireless communication connection pattern 2521a extends from the fourth via hole h14 to the fifth via hole h15 and is electrically connected to the fourth via hole h14 and the fifth via hole h15. That is, the 2-1 coil pattern 2512a and the 3-1 coil pattern 2513a disposed on the upper surface 1400a of the substrate 1400 are connected to the fourth via hole h14, the 1-1 wireless communication connection pattern 2521a and the fifth via hole h15.
  • the 1-2 wireless communication connection pattern 2521b extends from the sixth via hole h16 to the seventh via hole h17 and is electrically connected to the sixth via hole h16 and the seventh via hole h17.
  • the second -2 coil pattern 2512b and the third -2 coil pattern 2513b disposed on the upper surface 1400a of the substrate 1400 are connected to the sixth via hole h16, the 1-2 wireless communication connection pattern 2521b and the seventh via hole h17.
  • the second wireless communication connection pattern 2522 may extend from the eighth via hole h18 to the ninth via hole h19 and may electrically connect the eighth via hole h18 and the ninth via hole h19. That is, the fifth coil pattern 2515 and the sixth coil pattern 2516 disposed on the upper surface 1400a of the substrate 1400 are connected to the eighth via hole h18, the second wireless communication connection pattern 2522, (h19).
  • the second wireless communication connection pattern 2523 extends from the tenth and twelfth via holes h20 and h22 to the outside of the substrate 1400 and turns once inside the first wireless charging coil 610 to form an eleventh via hole h21 and a thirteenth via hole h23.
  • the third wireless communication connection pattern 2523 may include a third-first wireless communication connection pattern 2523a and a third-second wireless communication connection pattern 2523b.
  • the 3-1 wireless communication connection pattern 2523a extends from the tenth via hole h20 to the 11th via hole h21 and is electrically connected to the 10th via hole h20 and the 11th via hole h21.
  • the seventh coil pattern 2517a and the eighth coil pattern 2518a disposed on the top surface 1400a of the substrate 1400 are connected to the tenth via hole h20, 2523a and the 11th via hole h21.
  • the 3-2 wireless communication connection pattern 2523b extends from the 12th via hole h22 to the 13th via hole h23 and electrically connects the 12th via hole h22 and the 13th via hole h23. That is, the 7-2 coil pattern 2517b and the 8-2 coil pattern 2518b disposed on the upper surface 1400a of the substrate 1400 are connected to the 12th via hole h22, the 3-2 wireless communication connection pattern 2523b and the thirteenth via hole h23.
  • the wireless communication coil 2500 can form one coil.
  • the wireless communication connection pattern 2520 may be disposed at a second width that does not cause shadow areas of wireless charging.
  • each of the plurality of wireless communication connection patterns 2520 may have a second width.
  • the 1-1 wireless communication connection pattern 2521a and the 1-2 wireless communication connection pattern 2521b may be arranged with a first width, respectively. Accordingly, the interference caused by the wireless communication coil 2500 can be minimized by the wireless power generated by the wireless charging coil modules 610, 620, and 630. That is, even if the wireless communication coil 2500 is disposed in the charging region of the wireless charging coil module 2520, the wireless charging efficiency is not reduced.
  • the plurality of wireless communication connection patterns 2520 may be spaced apart from each other by a first distance so that shadow areas of wireless charging do not occur.
  • the 1-1 wireless communication connection pattern 2521a and the 1-2 wireless communication connection pattern 2521b may be spaced apart from each other by a first distance.
  • the present invention can be used in the field of wireless power transmission and reception.

Landscapes

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

Abstract

La présente invention concerne un appareil de charge sans fil pourvu d'une bobine de communication sans fil. Selon un mode de réalisation, l'appareil de charge sans fil pourvu d'une bobine de communication sans fil comprend : un module de bobine de charge sans fil comprenant une ou plusieurs bobines de charge sans fil ; un substrat disposé sur la surface supérieure du module de bobine de charge sans fil ; la bobine de communication sans fil disposée sur la surface supérieure du substrat ; et une unité de borne disposée sur la surface inférieure du substrat et connectée électriquement à la bobine de communication sans fil par l'intermédiaire de trous d'interconnexion. La bobine de communication sans fil peut comprendre un motif de bobine de communication sans fil s'étendant à partir de l'unité de borne. Le motif de bobine de communication sans fil peut comprendre une paire de motifs de bobine de communication sans fil se ramifiant à partir de ce dernier dans une zone chevauchant le module de bobine de charge sans fil.
PCT/KR2018/008963 2017-08-11 2018-08-07 Appareil de charge sans fil pourvu d'une bobine de communication sans fil Ceased WO2019031814A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0102405 2017-08-11
KR1020170102405A KR20190017483A (ko) 2017-08-11 2017-08-11 무선 통신 코일을 구비한 무선충전장치

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WO2019031814A1 true WO2019031814A1 (fr) 2019-02-14

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PCT/KR2018/008963 Ceased WO2019031814A1 (fr) 2017-08-11 2018-08-07 Appareil de charge sans fil pourvu d'une bobine de communication sans fil

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WO (1) WO2019031814A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4293474A4 (fr) * 2021-06-04 2024-07-31 Samsung Electronics Co., Ltd. Appareil électronique comprenant un écran souple

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013065245A1 (fr) * 2011-11-02 2013-05-10 パナソニック株式会社 Bobine pour communication sans fil sans contact, bobine de transmission, terminal sans fil mobile
KR20150051922A (ko) * 2013-11-05 2015-05-13 엘지전자 주식회사 무선전력 전송장치
KR20150072138A (ko) * 2013-12-19 2015-06-29 주식회사 대동 차량의 무선충전 송신 모듈
KR20150099478A (ko) * 2014-02-21 2015-08-31 주식회사 아모텍 무선 통신 및 무선 충전용 안테나 장치 및 이를 구비한 무선 충전 장치
KR20170048189A (ko) * 2015-10-23 2017-05-08 주식회사 아모텍 차량용 안테나 모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013065245A1 (fr) * 2011-11-02 2013-05-10 パナソニック株式会社 Bobine pour communication sans fil sans contact, bobine de transmission, terminal sans fil mobile
KR20150051922A (ko) * 2013-11-05 2015-05-13 엘지전자 주식회사 무선전력 전송장치
KR20150072138A (ko) * 2013-12-19 2015-06-29 주식회사 대동 차량의 무선충전 송신 모듈
KR20150099478A (ko) * 2014-02-21 2015-08-31 주식회사 아모텍 무선 통신 및 무선 충전용 안테나 장치 및 이를 구비한 무선 충전 장치
KR20170048189A (ko) * 2015-10-23 2017-05-08 주식회사 아모텍 차량용 안테나 모듈

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4293474A4 (fr) * 2021-06-04 2024-07-31 Samsung Electronics Co., Ltd. Appareil électronique comprenant un écran souple

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