WO2019124755A1 - Appareil de charge sans fil comprenant une bobine de communication sans fil - Google Patents

Appareil de charge sans fil comprenant une bobine de communication sans fil Download PDF

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Publication number
WO2019124755A1
WO2019124755A1 PCT/KR2018/014156 KR2018014156W WO2019124755A1 WO 2019124755 A1 WO2019124755 A1 WO 2019124755A1 KR 2018014156 W KR2018014156 W KR 2018014156W WO 2019124755 A1 WO2019124755 A1 WO 2019124755A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
disposed
connection
wireless
substrate
Prior art date
Application number
PCT/KR2018/014156
Other languages
English (en)
Korean (ko)
Inventor
임성현
Original Assignee
엘지이노텍 주식회사
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
Priority claimed from KR1020170176307A external-priority patent/KR20190074734A/ko
Priority claimed from KR1020170176358A external-priority patent/KR20190074767A/ko
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Publication of WO2019124755A1 publication Critical patent/WO2019124755A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Definitions

  • This embodiment relates to a wireless charging apparatus, and relates to a wireless charging apparatus having 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.
  • the wireless charging coil and the wireless communication coil are integrally mounted on the wireless charging device, interference or performance deterioration due to the grounding, the radiation member, and the like may occur. That is, the efficiency for wireless communication may be reduced due to the configuration for increasing the wireless charging efficiency.
  • the present embodiment is designed to solve the problems of the prior art, and it is an object of this embodiment to provide a wireless charging device having a wireless communication coil.
  • the present embodiment provides a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.
  • the present embodiment provides a wireless charging apparatus having a miniaturized wireless communication coil.
  • the present embodiment is to provide a wireless charging device having a wireless communication coil with excellent heat radiation effect.
  • the present embodiment provides a wireless charging apparatus having a wireless communication coil with a simplified manufacturing process.
  • the present embodiment is to provide a wireless charging device having a wireless communication coil whose manufacturing cost is reduced.
  • the present embodiment is to provide a wireless charging apparatus having a wireless communication coil with excellent heat generating effect.
  • the present embodiment provides a wireless charging device having a wireless communication coil capable of enhancing wireless communication and wireless charging efficiency.
  • the wireless charging apparatus includes a substrate; A shielding material disposed on the substrate; A wireless charging coil module disposed on the substrate and the shielding material; A first heat dissipating member disposed on an upper surface of the substrate; A second heat dissipating member disposed on a lower surface of the substrate; And a wireless communication coil pattern disposed on an upper surface of the substrate and spaced apart from the first heat radiation member, wherein the second heat radiation member is disposed in an edge region of the substrate; A main radiator disposed in a region overlapping the first radiator; And a connection heat dissipation unit connecting the ground heat dissipation unit and the main heat dissipation unit.
  • the first connection heat dissipation part and the second connection heat dissipation part may be disposed so as to be diagonally opposite to each other.
  • the first connection heat dissipation part and the second connection heat dissipation part may have a corresponding threshold width.
  • the first connection heat dissipation part and the second heat dissipation part may be a single number.
  • the critical width of the coupled heat dissipation unit may range from 7 mm to 4 mm.
  • the main radiator of the second radiator may be disposed at a position corresponding to the first radiator.
  • connection heat sink may be disposed so as to overlap with the wireless communication coil pattern.
  • the ground heat dissipation unit and the main heat dissipation unit may be disposed so as not to overlap the wireless communication coil pattern.
  • the first heat-radiating member and the second heat-radiating member may include copper (Cu).
  • the present embodiment can provide a wireless charging apparatus having a wireless communication coil.
  • the present embodiment can realize a wireless communication coil which can be wirelessly charged and wirelessly communicated while being miniaturized.
  • the present embodiment can be performed in an environment in which wireless charging and wireless communication are optimized.
  • the wireless charging apparatus according to the present embodiment may not reduce operation efficiency while increasing the heating effect.
  • 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 an exploded perspective view of the wireless charging apparatus according to the present embodiment.
  • FIG 4 is a plan view and a bottom view of the wireless charging apparatus according to the present embodiment.
  • FIG. 5 is a graph for explaining characteristics of a wireless communication coil according to a connection heat sink to which the present embodiment is applied.
  • FIG. 6 is a plan view for explaining the arrangement characteristics of the joint heat sink according to the present embodiment.
  • connection heat sink of FIG. 7 is a graph for explaining charging performance characteristics according to the arrangement characteristics of the connection heat sink of FIG.
  • connection heat sinks 8 is a plan view for explaining the number and arrangement characteristics of the connection heat sinks according to the present embodiment.
  • FIG. 9 is a graph for explaining charging performance characteristics according to the number of connection heat sinks and arrangement characteristics of FIG.
  • the present invention is not necessarily limited to these embodiments, as long as all of the constituent elements of the embodiment are described as being combined or operated together. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a computer-readable storage medium, readable and executed by a computer, thereby realizing embodiments. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.
  • first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.
  • an apparatus for transmitting wireless power on a wireless power charging system includes a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, , , A wireless power transmission device, a wireless power transmitter, a wireless charging device, and the like.
  • a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a receiving terminal, a receiving side, a receiving device, a receiver Terminals and the like can be used in combination.
  • the wireless charging device may be configured as a pad type, a cradle type, an access point (AP) type, a small base type, a stand type, a ceiling embedded type, a wall type, Power may be transmitted to the device.
  • AP access point
  • a wireless power transmitter can be used not only on a desk or on a table, but also developed for automobiles and used in a vehicle.
  • a wireless power transmitter installed in a vehicle can be provided in a form of a stand that can be easily and stably fixed and mounted.
  • a wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.
  • a wireless power receiver may include at least one wireless power transmission scheme and may receive wireless power from two or more wireless power transmitters at the same time.
  • the wireless power transmission scheme may include at least one of the electromagnetic induction scheme, the electromagnetic resonance scheme, and the RF wireless power transmission scheme.
  • the wireless power receiving means for supporting the electromagnetic induction method includes a wireless power consortium (WPC), which is a wireless charging technology standard organization, and an electromagnetic induction wireless charging technique defined by the Air Fuel Alliance (formerly PMA, Power Matters Alliance) .
  • the wireless power receiving means supporting the electromagnetic resonance method may include a resonance wireless charging technique defined in the Air Fuel Alliance (formerly Alliance for Wireless Power) standard mechanism, a wireless charging technology standard organization.
  • a wireless power transmitter and a wireless power receiver that constitute a wireless power system can exchange control signals or information through in-band communication or Bluetooth low energy (BLE) communication.
  • the in-band communication and the BLE communication can be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, and the like.
  • the wireless power receiver can transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching on / off the current induced through the reception coil in a predetermined pattern.
  • the information transmitted by the wireless power receiver may include various status information including received power intensity information.
  • the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.
  • FIG. 1 is a block diagram for explaining a wireless charging system according to an embodiment.
  • the wireless charging system includes a wireless power transmission terminal 10 for transmitting power wirelessly, a receiving terminal 20 for receiving the transmitted power, and an electronic device 30 receiving the received power .
  • 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 the operating frequency used for wireless power transmission.
  • the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 may perform out-of-band communication in which information is exchanged using a separate frequency band different from an 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 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, and in other embodiments, it may provide unidirectional communication or half-duplex communication.
  • 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 an application being executed, 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.
  • the configuration of the wireless power transmitter 200 is not necessarily essential, and may be configured to include more or less components.
  • the power supply unit 100 may supply power.
  • the power supply unit 100 may correspond to a battery built in the wireless power transmitter 200 or 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 conversion unit 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 state information or the power control signal of the wireless power receiver through the wireless charging communication unit 230, and the received power reception state information may be transmitted to the amplifier 212 based on the power control signal.
  • the degree of amplification can be adjusted.
  • 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 the input current input to the driving unit 210.
  • 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 supply of power 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 .
  • 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.
  • 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.
  • 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.
  • a power cutoff circuit may be further provided at one side of the power conversion unit 210 to cut off power supplied from the power supply unit 100 or to cut off power supplied to the amplifier 212.
  • 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.
  • 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 2200 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 selecting unit 222 may be omitted from the power transmitting unit 220 when the transmitting coil 2230 is configured as one transmitting 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 transmitting coil.
  • the transmission coil 223 may include first to n-th transmission coils.
  • the selecting unit 222 may be implemented with a switch or a multiplexer.
  • the transmission coil 223 may include one capacitor connected in series with the plurality of transmission coils to implement the LC resonance circuit. One end of the capacitor may be connected to the transmission coil 223 and the other end may be connected to the driving unit 221.
  • the control unit 240 can dynamically select a transmission coil to be used for wireless power transmission among a plurality of transmission coils provided based on a signal strength indicator received corresponding to a digital ping signal transmitted for each transmission coil.
  • the control unit 240 may control the selector 222 or the multiplexer so that the sense signal may be sequentially transmitted through the first through n'th transmit coils 223 during the first differential sense signal transmission procedure. 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 arrives, the controller 240 controls the selector 222 or the multiplexer, Can be controlled. For example, the timer 290 may transmit a specific event signal to the control unit 240 at predetermined intervals during the ping transmission step. When the event signal is detected, the control unit 240 controls the selecting unit 222 or the multiplexer, It is possible to control the digital ping to be transmitted through the 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 EC (Error Correction) indicator for control during radio power transmission, an end of charge (EOC) indicator, an overvoltage / overcurrent / And may include various status information for identifying the status of the wireless power receiver.
  • the demodulation unit 232 may identify the signal from which the demodulated signal is received and may provide the control unit 240 with a predetermined transmission coil identifier corresponding to the identified transmission coil.
  • the wireless power transmitter 200 may acquire the signal strength indicator through in-band communication that communicates with the wireless power receiver using the same frequency used for wireless power transmission.
  • the wireless power transmitter 200 may transmit wireless power using the transmission coil 223, and may 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 the transmission coil, and may perform in-band communication with the wireless power receiver using a separate coil.
  • 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 can be disposed in correspondence with the configuration of the superheat degree.
  • the fan 280 may be disposed corresponding to the power transmission unit 220.
  • 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 is a wireless communication technology that uses various frequencies of 13.56MGz to transmit various wireless data within a distance of 10cm.
  • RFID Radio Frequency Identification
  • the wireless communication coil 202 may transmit and receive signals for use in short-distance bidirectional communication with a wireless power receiver.
  • FIG 3 is an exploded perspective view of the wireless charging apparatus according to the present embodiment.
  • the wireless charging apparatus may include a wireless charging coil module 310.
  • the wireless charging coil module 310 may include one or more wireless charging coils.
  • the one or more wireless charging coils may be one or more transmitting coils of the power transmitter or one or more receiving coils of the wireless power receiver.
  • each wireless charging coil may be wound with the same number of turns. But may be wound in different numbers of turns.
  • the plurality of wireless charging coils may have the same inductance.
  • the present invention is not limited thereto, and different inductances may be provided.
  • the plurality of wireless charging coils may also be arranged in one or more layers.
  • the plurality of wireless charging coils may include first to third wireless charging coils 311, 312, and 313.
  • the second wireless charging coil 312 and the third wireless charging coil 313 may be disposed on the first layer so as to be disposed in the same layer.
  • the first wireless charging coil 311 may be disposed above the second wireless charging coil 312 and the third wireless charging coil 313. Accordingly, a plurality of wireless charging coils can be disposed in different coils to expand the charging area so that wireless power can be efficiently transmitted.
  • the one or more wireless charging coils may include first and second connection portions through which AC signals are input or output.
  • the first and second connections may be wires or cables coated with a coating.
  • the first wireless charging coil 311 may include a 1-1 charging coil connecting portion 321 and a 1-2 charging coil connecting portion 322.
  • the 1-1 filler coil connection portion 321 may extend from a coil line disposed inside the first wireless filler coil 311.
  • the first to second charging coil connection portions 322 may extend from the coil line to be disposed outside the first wireless charging coil 311.
  • the second wireless charging coil 312 may include a 2-1 charging coil connection 323 and a 2-2 charging coil connection 324.
  • the second-first charging coil connection portion 323 may extend from a coil line disposed inside the second wireless charging coil 312.
  • the second-second charging coil connection portion 324 may extend from the coil line to be disposed outside the second wireless charging coil 312.
  • the third wireless charging coil 313 may include a third-first charging coil connection 325 and a third-second charging coil connection 326.
  • the third-first charging coil connection part 325 may extend from a coil line disposed inside the third wireless charging coil 313.
  • the third-second charging coil connection portion 326 may extend from the coil line to be disposed outside the third wireless charging coil 313.
  • the wireless charging device may include the shielding material 330.
  • the shield 330 may be disposed at or below the wireless charging coil module.
  • the shielding material 330 may be disposed below or below the second wireless charging coil 312 and the third wireless charging coil 313.
  • An adhesive or an adhesive material (not shown) is disposed between the upper surface of the shielding material 330 and the lower surface of the second wireless charging coil 312 and the lower surface of the third wireless charging coil 313,
  • the charging coils 312 and 313 can be fixed.
  • the shielding member 330 can guide the wireless power generated in the wireless charging coil module disposed at the upper portion in the charging direction and protect various circuits disposed at the lower portion from the electromagnetic field.
  • the shielding material 330 may include first through third heat dissipating holes (or function holes) 331, 332, and 333.
  • the shielding material 330 transmits the heat generated from the wireless charging coil module to the heat dissipation members 400 and 700 disposed below the first built-in third heat dissipation holes 331, 332 and 333 to cool the wireless charging coil module I can help.
  • the first to third heat dissipating holes 331, 332 and 333 are formed in the same region as the thermisters 411, 412, 413, 511, 512, and 513 disposed on the heat dissipating members 400 and 700 or the substrate 500 So that the temperature of the wireless charging coil module can be accurately measured by the thermistors 411, 412, 413, 511, 512, and 513.
  • the wireless charging apparatus may include a substrate 500.
  • the substrate 500 may support the wireless charging coil module 310 and the shielding material 330.
  • the substrate 500 may also be rigid.
  • the rigid substrate 500 may be larger than the areas of the wireless communication coil 600, the wireless charging coil module 310, and the shielding material 330 disposed on the upper surface.
  • the substrate 500 may include terminal portions on the lower surface thereof.
  • the terminal portion may include a plurality of connection patterns, a plurality of inner pads, a plurality of outer pads, and a plurality of via holes.
  • the substrate 500 may include holes at one side and the other side. Each hole can be connected to the second heat dissipation member 700 and other substrates disposed on the lower surface by the fastening member.
  • a plurality of terminal portions 550 may be included in one region of the upper surface of the substrate 500.
  • the terminal portion 550 may be disposed on one side of the substrate and may include a plurality of connection terminals 551.
  • the plurality of connection terminals 551 can be connected to a coil pattern extending from the transmission coil.
  • Each of the connection terminals 551 includes a pin hole and can be electrically connected by the pin holes.
  • the wireless charging device may include a wireless communication coil 600.
  • the wireless communication coil 600 may be disposed on the upper surface of the substrate 500.
  • the wireless communication coil 600 may be a wireless communication coil pattern that is pattern printed and disposed on the substrate 500.
  • the wireless charging apparatus may include the heat dissipating members 400 and 700 on the top and bottom surfaces of the substrate 500.
  • the first heat radiation member 400 disposed on the upper surface of the substrate 500 may be disposed on the lower surface of the shield 330.
  • an adhesive or an adhesive may be disposed between the upper surface of the first radiation member 400 and the lower surface of the shield 330 so that the first radiation member 400 and the shield 330 may be fixed.
  • the heat generated from the wireless charging coil module is directly transmitted through the shield 330 or through the first through third heat dissipating holes 331, 332 and 333 of the shield 330, Heat can be released to the outside of the charging apparatus.
  • the first heat-radiating member 400 may include a plurality of heat-radiating holes 420.
  • the first radiating member 400 of the wireless charging apparatus may include first to third thermistors 411, 412, and 413.
  • the first to third thermistors 411, 412 and 413 of the first heat dissipating member 400 are disposed in a position and shape of the first to third heat dissipating holes (function holes) 331, 332 and 333 of the shielding material 330, Size. ≪ / RTI >
  • the heat dissipating member according to the embodiment may include a second heat dissipating member 700 disposed on the lower surface of the substrate 500.
  • a second heat dissipating member 700 disposed on the lower surface of the substrate 500.
  • an adhesive or an adhesive member may be disposed between the upper surface of the second radiation member 700 and the lower surface of the substrate 500, so that the second radiation member 700 and the substrate 500 may be fixed.
  • the second heat dissipation member 700 may be configured such that the heat absorbed by the first heat dissipation member 400 is transferred or the heat generated in the substrate 500 or the lower substrate Can be released.
  • the second heat dissipation member 700 of the wireless charging apparatus may include a plurality of heat dissipation holes 740.
  • the plurality of heat dissipation holes 740 of the second heat dissipation member 700 may transmit heat generated from the wireless charging coil module 310 to the outside to help cool the wireless charging coil module.
  • the plurality of heat dissipating holes 740 of the second heat dissipating member 700 are positioned and shaped in relation to the plurality of heat dissipating holes 520 of the substrate 500 and the plurality of heat dissipating holes 420 of the first heat dissipating member 400 Lt; / RTI >
  • the wireless charging apparatus may include a radiation member on the top and bottom surfaces of the substrate.
  • 4A is an upper surface of the substrate
  • FIG. 4B is an upper surface of the substrate.
  • the wireless communication coil 600 may be disposed on the top surface 500A of the substrate 500. In this case,
  • the wireless communication coil 600 may be formed by connecting a plurality of wireless communication coil patterns.
  • the plurality of wireless communication coil patterns may include a first wireless communication coil pattern 601 and a second wireless communication coil pattern 602.
  • One end of the first wireless communication coil pattern 601 may be connected to the second wireless communication coil pattern 602 by a connection pattern (not shown).
  • the first wireless communication coil pattern 601 may be arranged extending clockwise from one end.
  • the other end of the first wireless communication coil pattern 602 may be connected to the connection terminal 551.
  • One end of the second wireless communication coil pattern 602 is connected to one end of the first wireless communication coil 602 through a connection pattern (not shown) and extends from one end connected to the first wireless communication coil 602 And the other end may be connected to the connection terminal 552.
  • the connection terminal to which the other end of the first wireless communication coil pattern 602 is connected may be different from the connection terminal to which the second wireless communication coil pattern 602 is connected.
  • the first radiation member 400 may be disposed on the upper surface 500A of the substrate 500 inwardly of the wireless communication coil 600.
  • the first heat-radiating member 400 may be arranged to correspond to a bottom surface on which the wireless charging coil module is disposed.
  • the first radiation member 400 may be arranged corresponding to the wireless charging coil module inside the substrate on which the wireless communication coil 600 is disposed.
  • the first radiation member 400 may include copper (Cu).
  • the first heat-radiating member 400 may receive the heat generated by the wireless charging coil module to help cool the wireless charging coil module.
  • the first heat-radiating member 400 may be formed corresponding to the size of the wireless charging coil module.
  • the first radiation member 400 may be formed to be larger than the wireless charging coil module.
  • the first radiation member 400 may be disposed inside the first wireless communication coil pattern 601 and the second wireless communication coil pattern 602 so as not to overlap the wireless communication coil patterns 601. [ have.
  • the second heat dissipation member 700 may be disposed on the lower surface 500B of the substrate 500. 4 (b), the second heat dissipation member 700 includes the main heat dissipation unit 710, the ground heat dissipation units 720a and 720b, and the connection heat dissipation units 730a and 730b.
  • the main heat radiating part 710 may function together with the first heat radiating member 400 disposed on the upper surface 500 of the substrate 500 to cool the heat generated in the wireless charging coil module.
  • the main heat dissipating unit 710 may be disposed on the lower surface 500B of the substrate 500 in a size and position corresponding to the first heat dissipating member 400 disposed on the upper surface 500A of the substrate 500.
  • the main radiating portion 710 may be disposed on the lower surface 500B of the substrate 500 inwardly to the upper surface 500A of the substrate 500 where the wireless communication coil 600 is disposed.
  • the main heat radiating part 710 may be formed larger than the wireless charging coil module. Further, the mail heat radiating portion 710 may be formed smaller than the wireless communication coil pattern.
  • the main radiator 700 includes a first wireless charging coil pattern 601 disposed on the upper surface 500A of the substrate 500 and a second wireless communication coil pattern 602 disposed on the inner side of the substrate 500
  • the first radiating member 400 may be disposed at a position that does not overlap the wireless communication coil 600 by being disposed on the lower surface 500B and may be formed to correspond to the first radiating member 400.
  • the main radiating portion 710 may be spaced apart from the inner side of the first wireless communication coil pattern 601 and the second wireless communication coil 602 among the wireless communication coils 600 by a critical width d3. Specifically, one side of the main radiating portion 710 may be spaced apart from the inside of the first wireless communication coil pattern 601 by a critical width d3.
  • the other side of the main radiating portion 710 may be spaced apart from the inner side of the second wireless communication coil pattern 602 by a critical width d3. That is, the main radiator 710 includes a first wireless communication coil pattern 601 and a second wireless communication coil pattern 602 of the wireless communication coil 600 disposed on the upper surface 500A of the substrate 500 May be spaced apart from the bottom surface 500B of the substrate 500 corresponding to the position by a critical width d3.
  • the threshold width d3 may range from 4 mm to 6 mm. More preferably, the threshold width d3 may be 5 mm.
  • the ground heat sinks 720a and 720b may be disposed in the edge area of the lower surface 500B of the substrate 500. Specifically, the ground heat dissipation units 720a and 720b may be disposed on one side and the other side of the lower surface 500B of the substrate 500, respectively.
  • the grounding heat sinks 720a and 720b may include a first grounded heat sink 720a disposed on one side of the lower surface 500B of the substrate 500 and a second grounded heat sink 720b disposed on one side of the substrate 500 facing the first grounded heat sink 720a. And a second ground radiating portion 720b disposed on the other side of the lower surface 500B.
  • the first ground heat dissipation unit 720a and the second ground heat dissipation unit 720b may be disposed apart from the main heat dissipation unit 710.
  • the first and second ground heat dissipation units 720a and 720b may be disposed in areas that do not overlap with the wireless communication coil pattern 600 disposed on the top surface 500A of the substrate 500.
  • the first and second ground heat dissipation units 720a and 720b may be disposed apart from the main heat dissipation unit 710 by more than a width of the wireless communication coil pattern.
  • the distance between the first and second ground heat dissipation units 720a and 720b is spaced apart from the main heat dissipation unit 710.
  • the first ground radiator 720a may be spaced apart from the first radio communication coil pattern 601 of the radio communication coil 600 disposed on the top surface 500A of the substrate 500 by a critical width d4 .
  • the second ground radiator 720b may be spaced apart from the first radio communication coil pattern 601 of the radio communication coil 600 disposed on the top surface 500A of the substrate 500 by a critical width d4 have.
  • the first and second ground radiating parts 720a and 720b are disposed such that the first wireless communication coil pattern 601 of the wireless communication coil 600 disposed on the upper surface 500A of the substrate 500 is disposed Can be respectively disposed in the edge regions at a distance of a critical width d4 from the lower surface 500B of the substrate 500 corresponding to the positions.
  • the threshold width d4 may range from 4 mm to 6 mm. More preferably, the threshold width d4 may be 5 mm.
  • the first and second ground radiating parts 720a and 720b may be connected to the main radiating part 710.
  • the first ground radiating part 720a and the second ground radiating part 720b may be connected to the ground the first ground radiating portion 720a includes a first hole h1 and a second hole h2 and the second ground radiating portion 720b includes a third grounding radiating portion 720b, A hole h3 and a fourth hole h4.
  • the first and second ground heat dissipation units 720a and 720b may be grounded through the first to fourth holes h1 to h4 and the heat absorbed from the first heat dissipation unit 400 may be grounded .
  • the main heat sink 710 and the first and second ground heat sinks 720a and 720 may be connected by the connection heat sinks 730a and 730b, respectively.
  • connection heat dissipation units 730a and 730b include a first ground heat dissipation unit 720a and a second ground heat dissipation unit 720b spaced apart from one another on the basis of the main heat dissipation unit 710 and the main heat dissipation unit 710, Respectively.
  • the connection heat sinks 730a and 730b are formed of a first connection heat sink 730a connecting the main heat sink 710 and the first ground heat sink 720a, a main heat sink 710 and a second ground heat sink 720b And a second connection heat sink 730b connecting the first connection heat sink 730b and the second connection heat sink 730b.
  • the first connection heat sink 730a may transmit the heat of the main heat sink 710 to the first ground heat sink 720a to increase the cooling effect.
  • the first connection heat sink 730a connects the main heat sink 710 to the first ground connection heat sink 720a to ground the main heat sink 710.
  • the second connection heat dissipation unit 730b may transmit the heat of the main heat dissipation unit 710 to the second ground heat dissipation unit 730b to increase the cooling effect.
  • the second connection heat sink 730b connects the main heat sink 710 to the second ground heat sink 720b to ground the main heat sink 710.
  • the first connection heat sink 730a and the second connection heat sink 730b may be disposed diagonally opposite each other.
  • the present invention is not limited thereto, and the position of the coupled heat dissipating unit for connecting the main heat dissipating unit 710 to the first ground heat dissipating unit 720a and the second ground heat dissipating unit 720b may be varied.
  • the first connection heat sink 730a and the second connection heat sink 730b may be formed with the inlet wirings d1 and d2.
  • the critical widths d1 and d2 may be defined as the lengthwise direction of a region where the first connection heat sink 730a or the second connection heat sink 730b overlaps with the wireless communication coil 600 .
  • the first connection heat dissipation unit 730a may be formed to correspond to a width of the first connection heat dissipation unit 720a and the main heat dissipation unit 710 to be spaced apart from each other.
  • the first connection heat dissipation part 730a may be formed to have a width larger than a distance between the first ground connection heat dissipation part 720a and the main heat dissipation part 710.
  • the second connection heat dissipation part 730b may be formed to correspond to the width of the second ground heat dissipation part 720b and the main heat dissipation part 710.
  • the second connection heat dissipation part 730b may be formed to have a width larger than a distance between the second ground heat dissipation part 720b and the main heat dissipation part 710.
  • the critical widths d1 and d2 of the first connection heat sink 730a and the second connection heat sink 730b may be the same.
  • the critical widths (d1, d2) sms 7mmdlgkfh of the first connection heat sink 720a and the second connection heat sink 720b can be formed.
  • the critical widths d1 and d2 of the first connection heat sink 720a and the second connection heat sink 720b may be 7 mm.
  • the range or the numerical value of the critical widths d1 and d2 is not limited, but may affect the characteristics of the wireless communication coil 600 depending on the critical width. Specifically, the inductance and resistance of the wireless communication coil 600 can be varied according to the critical width, which is the degree to which the first connection heat sink 720a and the second connection heat sink 720b overlap with the wireless communication coil 600 .
  • FIG. 5 is a graph for explaining characteristics of a wireless communication coil according to a connection heat sink to which the present embodiment is applied.
  • the inductance value of the wireless communication coil 600 is about 0.63uH, 0.5 < / RTI > If the threshold width d1. D2 is gradually decreased, the inductance characteristic of the wireless communication coil 600 is improved and the resistance characteristic is decreased as shown in the graph.
  • the critical widths d1 and d2 of the first connection heat sink 720a and the second connection heat sink 720b are 7 mm as in the present embodiment, the inductance characteristics and resistance characteristics of the wireless communication coil 600 Can be maximized. That is, when the critical width (d1.
  • D2 is 7 mm
  • the inductance characteristic has the maximum value
  • the resistance characteristic can have the minimum value.
  • the critical widths (d1, d2) are reduced by 7mmalaxdmfh
  • the inductance characteristics and resistance characteristics similar to the critical width of 7mm can be obtained up to a certain threshold width.
  • inductance and resistance characteristics can be reduced when the threshold width is less than 4 mm.
  • the first connection heat sink 720a and the second connection heat sink 720b may have a critical width of preferably 4 mm to 7 mm. More preferably, the first connection heat sink 720a and the second connection heat sink 720b may have a critical width of 7 mm. It is possible to maximize the inductance characteristics and the resistance characteristics of the wireless communication coil 600 by forming the critical widths of the first connection heat radiation portion 720a and the second connection heat radiation portion 720b to 4 mm to 7 mm, There is an effect that can be optimized.
  • first connection heat sink 720a and the second connection heat sink 720b may be disposed opposite to each other.
  • first connection heat sink 720a and the second connection heat sink 720b may have a critical width and may be arranged to face each other diagonally. This placement characteristic may also affect the characteristics of the wireless communication coil 600.
  • connection heat sink and the characteristics of the wireless communication coil according to the present embodiment will be described in detail with reference to FIGS. 6 and 7.
  • FIG. 6
  • FIG. 6 is a plan view for explaining the arrangement characteristics of the connection heat sink according to the present embodiment
  • FIG. 7 is a graph for explaining the connection characteristics according to the arrangement characteristics of the connection heat sink shown in FIG.
  • 6 (a), 6 (b), and 6 (c) illustrate the case where the positions of the connected heat sinks are different from each other.
  • b) and (c) are graphs showing the characteristics of the wireless communication coil according to the position of the coupled heat dissipation unit according to the example diagrams.
  • the inductance and resistance characteristics of the wireless communication coil may differ depending on the position where the connection heat dissipation unit connects the main heat dissipation unit and the ground heat dissipation unit, that is, the position of the connection heat dissipation unit.
  • the inductance is about 1.03 uH and the resistance value is 0.286 ?.
  • the inductance is about 0.992uH And the resistance value is 0.284?.
  • the inductance is 1.02uH , And the resistance value is 0.289 ?. 6 (a) shows a case in which the first connection heat radiation portion is disposed above the second connection heat radiation portion.
  • the heat radiation characteristic can be improved while maintaining the optimal performance of the wireless communication coil .
  • first connection heat dissipation unit and the second connection heat dissipation unit are each formed by one, and the main heat dissipation unit, the first ground heat dissipation unit, and the main heat dissipation unit and the second ground heat dissipation unit are connected.
  • this configuration is not limited, and the connection heat sink may be composed of various numbers and positions.
  • FIG. 8 inductance and resistance characteristics according to the number and position characteristics of the coupled heat dissipation units will be described in detail with reference to FIGS. 8 and 9.
  • FIG. 8 is a plan view for explaining the number and arrangement characteristics of the connection heat sinks according to the present embodiment
  • FIG. 9 is a graph for explaining the charging performance characteristics according to the number and arrangement characteristics of the connection heat sinks in FIG.
  • Fig. 9 is a graph showing the characteristics of the wireless communication coil according to the example diagrams of Figs. 8 (a), 8 (b), 8 (c), 8 (d), 8 (e) and 8 (f).
  • connection heat sink 930 connecting the main heat sink 910 and the first and second ground heat sinks 920a and 920b is connected to the first to fourth And connection heat dissipation units 930a, 930b, 930c, and 930d.
  • the first connection heat dissipation unit 930a and the second connection heat dissipation unit 930b can connect the main heat dissipation unit 910 and the first ground heat dissipation unit 920a.
  • the third connection heat sink 930c and the fourth connection heat sink 930d may connect the main heat sink 910 and the second ground heat sink 920b.
  • the first and second connection heat dissipation units 930a and 930b may be spaced apart from the upper and lower sides of the main heat dissipation unit 910.
  • the third and fourth connection heat dissipation units 930c and 930d may also be disposed above and below the main heat dissipation unit 910.
  • the first and second connection heat dissipation units 930a and 930b may be spaced apart from the third and fourth connection heat dissipation units 930c and 930d and the main heat dissipation unit 910.
  • the wireless communication coil may have the characteristics of an inductance of 0.797uH and a resistance of 0.359 ⁇ .
  • connection heat sink 1030 connecting the main heat sink 1010 and the first and second ground heat sinks 1020a and 1020b is connected to the first, And heat dissipation units 1030a, 1030b, and 1030c.
  • the first connection heat sink part 1030a can connect the main heat sink part 1010 and the first ground heat sink part 1020a.
  • the second connection heat dissipation unit 1030b and the third connection heat dissipation unit 1030c may connect the main heat dissipation unit 1010 and the second ground heat dissipation unit 1020b.
  • the first connection heat sinks 1030a may be arranged diagonally opposite to the connection heat sinks of any one of the second connection heat sinks 1030b or the third connection heat sinks 1030c.
  • the wireless communication coil may have the characteristics of an inductance of 0.886 uH and a resistance of 0.326 ohms.
  • 8 (c) shows an example in which the second heat radiation member disposed on the lower surface 500B of the board 500 includes a plurality of connected heat radiation units.
  • 8 (c) may include a plurality of connected heat dissipating units for connecting the main heat dissipating unit 1110 and the second ground heat dissipating unit 1120b (or between the main heat dissipating unit 1110 and the first grounding unit 1120b)
  • a plurality of connection heat dissipating units for connecting the heat dissipating unit 1120a may be included) that connects the main heat dissipating unit 1110 and the first ground heat dissipation unit 1120a (or the second ground heat dissipation unit 1120b)
  • the connection heat sink is not disposed and the connection heat sink part connecting the second ground heat sink part 1120b (or the first ground heat sink part 1120a) and the main heat sink part 1110 has the first connection heat sink part 1130a and the second connection heat sink part 1130a, And a
  • the first connection heat sink 1130a and the second connection heat sink 1130b may be disposed on the same vertical line.
  • the wireless communication coil may have the characteristics of an inductance of 0.893uH and a resistance of 0.306 ⁇ .
  • the first heat dissipation unit 1220a and the second ground heat dissipation unit 1220b may include a connection heat dissipation unit that connects the main heat dissipation unit 1210 and the second ground heat dissipation unit 1220a (or the first ground heat dissipation unit 1220b). That is, the connection heat sink for connecting the main heat sink 1210 and the first ground heat sink 1220a (or the second ground heat sink 1220b) may not be disposed.
  • the first connection heat dissipation unit 1230a may include a connection heat dissipation unit that connects the second ground heat dissipation unit 1220b (or the first ground heat dissipation unit 1220a) and the main heat dissipation unit 1210.
  • the wireless communication coil may have characteristics of an inductance of 0.91 uH and a resistance of 0.293 ohms.
  • connection heat sink 1330 connecting the main heat sink 1310 and the first and second ground heat sinks 1320a and 1320b is connected to the first and second connections And heat radiating portions 1330a and 1330b.
  • the first connection heat sink part 1330a can connect the main heat sink part 1310 and the first ground heat sink part 1320a.
  • the second connection heat sink 1330b may connect the main heat sink 1310 and the second ground heat sink 1320b.
  • the first connection heat dissipation part 1330a and the second connection heat dissipation part 1330b may be disposed so as to face each other.
  • the first connection heat radiating part 1330a and the second connection heat radiation part 1330b may be disposed on the same horizontal line by a distance of the main heat radiation part 1210.
  • the wireless communication coil may have the characteristics of an inductance of 0.928uH and a resistance of 0.293 ⁇ .
  • 8F illustrates an example in which the second heat radiation member disposed on the lower surface 500B of the board 500 includes a plurality of connected heat radiation units.
  • 8E illustrates a connection heat sink 1430 connecting the main heat sink 1410 and the first and second ground heat sinks 1420a and 1420b to the first and second connections And heat dissipation units 1430a and 1430b.
  • the first connection heat dissipation part 1430a can connect the main heat dissipation part 1410 and the first ground heat dissipation part 1420a.
  • the second connection heat dissipation part 1430b can connect the main heat dissipation part 1410 and the second ground heat dissipation part 1420b.
  • the first connection heat dissipation part 1430a and the second connection heat dissipation part 1430b may be disposed so as to face each other.
  • the first connection heat dissipation part 1430a and the second connection heat dissipation part 1430b may be spaced apart from each other by a main heat dissipation part 1410 on a different horizontal line. That is, the first connection heat dissipation part 1430a and the second connection heat dissipation part 1430b may be disposed diagonally opposite to each other.
  • the wireless communication coil may have the characteristics of an inductance of 0.927uH and a resistance of 0.291 ⁇ .
  • connection heat sink of the example of FIG. 8 (e) and the example of FIG. 8 (f) shows similar wireless communication coil characteristics.
  • the structure of the connection heat dissipation part shown in the example of FIG. 8 (f) is more efficient in heat dissipation.
  • connection heat sink as shown in the example of FIG. 8 (e) is not easy to radiate the heat concentrated in the central region of the substrate.
  • connection heat sink in the arrangement of the connection heat sink as shown in FIG. 8 (f), a path for dissipating heat generated from the front surface of the substrate can be efficiently formed. Therefore, even if the wireless communication coil has similar characteristics, the connection heat sink having the same structure as the example of FIG. 8 (f) may be preferable.
  • one first connection heat radiating portion 1430a connecting the main heat radiating portion 1410 and the first ground heat radiating portion 1420a
  • the inductance and resistance characteristics of the wireless communication coil are improved by configuring one second connection radiating portion 1430b connecting the first grounding radiating portion 1410 and the second grounding radiating portion 1420b.
  • connection heat dissipation units can be formed.
  • the inductance and resistance characteristics of the wireless communication coils may be different and the heat dissipation effect may be different have.
  • the heat dissipating part and the second connection heat dissipating part are arranged in a diagonal direction opposite to each other so as to be effective.
  • connection heat sink can be applied to various positions and numbers of the heat sinks varying according to the present embodiment.

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

Abstract

Un mode de réalisation de la présente invention concerne un appareil de charge sans fil comprenant une bobine de communication sans fil. L'appareil de charge sans fil, selon le mode de réalisation de la présente invention, comprend : un substrat ; un matériau de blindage disposé sur le substrat ; un module de bobine de charge sans fil disposé sur le substrat et le matériau de blindage ; un premier élément de dissipation de chaleur disposé sur la surface supérieure du substrat ; un second élément de dissipation de chaleur disposé sur la surface inférieure du substrat ; et un motif de bobine de communication sans fil disposé sur la surface supérieure du substrat et disposé de manière à être espacé du premier élément de dissipation de chaleur. Le second élément de dissipation de chaleur comprend : une partie de dissipation de chaleur de mise à la terre disposée sur la région de bord du substrat ; une partie de dissipation de chaleur principale disposée dans une région chevauchant le premier élément de dissipation de chaleur ; et une partie de dissipation de chaleur de connexion pour connecter la partie de dissipation de chaleur de mise à la terre et la partie de dissipation de chaleur principale.
PCT/KR2018/014156 2017-12-20 2018-11-19 Appareil de charge sans fil comprenant une bobine de communication sans fil WO2019124755A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2017-0176307 2017-12-20
KR10-2017-0176358 2017-12-20
KR1020170176307A KR20190074734A (ko) 2017-12-20 2017-12-20 무선통신코일을 구비한 무선충전장치
KR1020170176358A KR20190074767A (ko) 2017-12-20 2017-12-20 무선통신코일을 구비한 무선충전장치

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101559939B1 (ko) * 2015-07-07 2015-10-14 주식회사 아모그린텍 무선충전용 방열유닛
KR101629653B1 (ko) * 2015-04-02 2016-06-13 주식회사 아모그린텍 무선 충전용 방열유닛 및 이를 포함하는 무선전력 충전모듈
WO2016105873A1 (fr) * 2014-12-22 2016-06-30 Qualcomm Incorporated Système et procédé pour gestion thermique dans des dispositifs de charge sans fil
KR20170076510A (ko) * 2015-12-24 2017-07-04 주식회사 아모그린텍 무선충전용 일체형 차폐성 방열유닛 및 이를 포함하는 무선전력 충전모듈
KR20170093029A (ko) * 2016-02-04 2017-08-14 주식회사 아모센스 무선전력 전송모듈용 차폐유닛 및 이를 구비한 무선전력 전송모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016105873A1 (fr) * 2014-12-22 2016-06-30 Qualcomm Incorporated Système et procédé pour gestion thermique dans des dispositifs de charge sans fil
KR101629653B1 (ko) * 2015-04-02 2016-06-13 주식회사 아모그린텍 무선 충전용 방열유닛 및 이를 포함하는 무선전력 충전모듈
KR101559939B1 (ko) * 2015-07-07 2015-10-14 주식회사 아모그린텍 무선충전용 방열유닛
KR20170076510A (ko) * 2015-12-24 2017-07-04 주식회사 아모그린텍 무선충전용 일체형 차폐성 방열유닛 및 이를 포함하는 무선전력 충전모듈
KR20170093029A (ko) * 2016-02-04 2017-08-14 주식회사 아모센스 무선전력 전송모듈용 차폐유닛 및 이를 구비한 무선전력 전송모듈

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