WO2019107779A1 - Dispositif de charge sans fil - Google Patents

Dispositif de charge sans fil Download PDF

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Publication number
WO2019107779A1
WO2019107779A1 PCT/KR2018/013406 KR2018013406W WO2019107779A1 WO 2019107779 A1 WO2019107779 A1 WO 2019107779A1 KR 2018013406 W KR2018013406 W KR 2018013406W WO 2019107779 A1 WO2019107779 A1 WO 2019107779A1
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WO
WIPO (PCT)
Prior art keywords
heat dissipation
disposed
wireless charging
wireless
substrate
Prior art date
Application number
PCT/KR2018/013406
Other languages
English (en)
Korean (ko)
Inventor
임성현
Original Assignee
엘지이노텍 주식회사
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Filing date
Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Publication of WO2019107779A1 publication Critical patent/WO2019107779A1/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
    • H01F27/2876—Cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/288—Shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • 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 device, and relates to a wireless charging device 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 also provides a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.
  • the present embodiment also provides a wireless charging apparatus having a miniaturized wireless communication coil.
  • the present embodiment provides a wireless charging device having a wireless communication coil with excellent heat radiation effect.
  • the present embodiment also provides a wireless charging device having a wireless communication coil with a simplified manufacturing process.
  • the present embodiment provides a wireless charging apparatus having a wireless communication coil whose manufacturing cost is reduced.
  • the present embodiment provides a wireless charging device having a wireless communication coil with excellent heat generating effect.
  • the present embodiment also provides a wireless charging device having a wireless communication coil capable of increasing wireless communication and wireless charging efficiency.
  • the wireless charging apparatus includes a wireless charging coil module including one or more wireless charging coils; A shielding material disposed at a lower portion of the wireless charging coil module; A substrate on which the wireless charging coil module and the shielding material are disposed; 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 radiation member may be disposed in an area overlapping the wireless charging coil module inside the wireless communication coil pattern.
  • ground heat dissipation part and the main heat dissipation part of the second heat dissipation member may be disposed so as not to overlap with the wireless communication coil pattern.
  • the ground heat dissipation unit and the main heat dissipation unit may be disposed apart from the wireless communication coil pattern.
  • ground heat dissipation unit and the main heat dissipation unit may be disposed to be separated from the wireless communication coil pattern by 4 mm to 6 mm, respectively.
  • the ground heat dissipation unit and the main heat dissipation unit may be disposed at a distance of 5 mm from the wireless communication coil pattern.
  • the grounded heat dissipation unit may include a first grounded heat dissipation unit and a second grounded heat dissipation unit, which are respectively disposed at both side edge regions of the substrate.
  • the first grounded heat dissipation unit and the second grounded heat dissipation unit are respectively connected to the main heat dissipation unit by a connection heat dissipation unit, and the connection heat dissipation unit includes a first connection heat dissipation unit that connects the first ground heat dissipation unit and the main heat dissipation unit. And a second connection heat dissipation unit connecting the second ground heat dissipation unit and the main heat dissipation unit.
  • the first connection heat dissipation unit and the second connection heat dissipation unit may be disposed diagonally apart from each other.
  • the width of the connected heat dissipation part may be 7 mm.
  • the first heat-radiating member and the second heat-radiating member may be formed of 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 the 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.
  • 5 is a graph for explaining the charging performance of the wireless charging device to which the present embodiment is applied.
  • 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.
  • upper or lower is not limited to the case where two components are in direct contact with each other, But also includes the case where another component is formed or disposed between two components. Also, in the case of "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.
  • 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, on a table or the like, but also for a vehicle and used in a vehicle.
  • a wireless power transmitter installed in a vehicle can be provided in the form of a mount that can be easily and stably fixed or mounted.
  • a mobile device (hereinafter referred to as a " device ") capable of charging a battery by mounting a wireless power receiving means according to an embodiment may be used and the term terminal or device may be used in combination.
  • 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 another embodiment, 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 may adjust the intensity of the DC / DC-converted power according to a control signal of the controller 40.
  • the control unit 40 may receive the power reception status information or the power control signal of the wireless power receiver through the wireless charging communication unit 230, and may control the power of the amplifier 212 ) Can be adjusted by a ghost.
  • the power reception state information may include, but is not limited to, information on the intensity of the rectifier thrust voltage, the intensity information of the current applied to the reception coil, etc.
  • the power control signal includes a signal for requesting power increase, And a signal for requesting a response.
  • the current sensor 250 can measure the input current input to the driving unit 21. [ The current sensor 250 may provide the measured input current value to the control unit 240. [ For example, 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 disposed corresponding to the transmission coil 223 of the power transfer unit 220 to measure the temperature of the transmission coil 2230.
  • the control unit 240 may measure It is possible to adaptively cut off the message supply from the power supply unit 100 or block the supply of power to the amplifier 212 based on the temperature value.
  • 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 220 may include a driving unit 2210, 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 selecting unit 222 may be implemented with a switch or a multiplexer.
  • 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 may be connected to the transmission coil 223 and the other end may be connected to the driving unit 221.
  • the term "corresponding transmitting coil” may refer to a transmitting coil having a state capable of being coupled by an electromagnetic field to a receiving 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 received signal strength indicator 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 selecting unit 222 or the multiplexer, So that the signal can be transmitted. 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 controls the selecting 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, a DOC (End Of Charge) indicator, an overvoltage / overcurrent / But is not limited to, 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 each of the transmission coils, that is, first to n-th transmission coils, Band communication.
  • 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 transmission 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 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 the present invention is not limited thereto, and each wireless charging coil may be wound with a different number of turns.
  • the plurality of wireless charging coils may have the same inductance. But the present invention is not limited thereto and a plurality of wireless charging coils may have different inductances.
  • the plurality of wireless charging coils may also be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include a first wireless charging coil to a third wireless charging coil 311, 312, 313.
  • the second wireless charging coil 312 and the third wireless charging coil 313 may be disposed in the first layer. That is, the second wireless charging coil 312 and the third wireless charging coil 313 may be disposed on the same plane.
  • the first wireless charging coil 311 may be disposed in the second layer.
  • the second layer may be located on the first layer.
  • the first wireless charging coil 311 may be disposed on a different layer from the second wireless charging coil 312 and the third wireless charging coil 313. That is, 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 layers 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 connection portions may be wires coated with a coating (e.g., Litz wire or the like) or a cable.
  • 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 first 1-1 charging coil connection part 321 may extend from a coil line disposed inside the first wireless charging coil 311.
  • the 1-2 charging coil connection portion 322 may extend from a coil line 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 a coil line 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 a coil line disposed outside the third wireless charging coil 313.
  • the wireless charging device may include the shielding material 330.
  • the shielding member 330 may be disposed on the lower surface of the wireless charging coil module.
  • the shield 330 may be disposed on the lower surfaces of the second wireless charging coil 312 and the third wireless charging coil 313.
  • the area of the shielding material 330 may be at least larger than the entire area of the second wireless charging coil 312 and the third wireless charging coil 313, but the present invention is not limited thereto.
  • An adhesive or an adhesive member (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 wireless 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 first through third heat dissipating holes (or function holes) 331, 332 and 333 of the shielding member 330 transmit the heat generated from the wireless charging coil module to the heat dissipating members 400 and 700 disposed thereunder, Lt; / RTI >
  • the first through third heat dissipation holes (or function holes) are formed in the same regions as the thermisters 411, 412, 413, 511, 512 and 513 disposed on the heat dissipation member 400 or 700 or the substrate 500 described later, and the thermistors 411, Allows accurate temperature measurement of the module.
  • 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 area of the rigid substrate 500 may be larger than the area of the wireless communication coil 600, the wireless charging coil module 310, or 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 a hole on one side and a hole on the other side. Each hole may be connected to the second radiation 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 500 and may include a plurality of connection terminals OP.
  • the plurality of connection terminals OP may be connected to the charging coil connection portions 321 to 326 extending from the wireless charging coils 311, 312 and 313, respectively.
  • Each of the connection terminals OP 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 include a wireless communication coil pattern.
  • the wireless charging apparatus may include radiation members 400 and 700 on the top and bottom surfaces of the substrate 500, respectively.
  • the heat dissipating member may include a first heat dissipating member 400 disposed on the upper surface of the substrate 500 and a second heat dissipating member 700 disposed on the lower surface of the substrate 500.
  • the first heat-radiating member 400 may be disposed on the lower surface of the shielding member 330.
  • an adhesive or an adhesive material may be disposed between the upper surface of the first heat dissipating member 400 and the lower surface of the shielding material 330 to fix the first heat dissipating member 400 and the shielding material 330.
  • the first heat-dissipating member 400 may include a plurality of heat-dissipating holes 420 (421, 422, 423).
  • the heat dissipating holes 420 of the first heat dissipating member 400 may transmit heat generated from the wireless charging coil module to the outside to help cool the wireless charging coil module.
  • the plurality of heat dissipation holes 420 of the first heat dissipation member 400 may correspond to the positions, shapes, and / or sizes of the plurality of heat dissipation holes 520 of the substrate 500.
  • the first heat-radiating member 400 of the 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 may be formed in a shape corresponding to the position, shape and / or size of the first to third heat dissipating holes 331, 332 and 333 of the shielding material 330 .
  • 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 heat dissipated from the first heat dissipation member 400 is transferred to the second heat dissipation member 700 and the heat generated in the substrate 500 or the lower substrate .
  • the second heat dissipation member 700 of the wireless charging apparatus may include a plurality of heat dissipation holes 740 (741, 742, 743).
  • the plurality of heat dissipation holes 740 of the second heat dissipation member 700 may transmit heat generated from the wireless charging coil module 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 >
  • FIG 4 is a plan view and a bottom view of the wireless charging apparatus according to the present embodiment.
  • each of the upper and lower surfaces of the substrate of the wireless charging apparatus may include a heat dissipating member.
  • 4A is an upper surface of the substrate
  • FIG. 4B is an upper surface of the substrate.
  • an upper surface 500A of the substrate 500 may be disposed with a wireless communication coil 600.
  • the wireless communication coil 600 may include a plurality of wireless communication coil patterns. More specifically, the plurality of wireless communication coil patterns may include a first wireless communication coil pattern 601 and a second wireless communication coil pattern 602.
  • the first wireless communication coil pattern 601 may extend from one side to the other side, for example, in a clockwise direction.
  • the first wireless communication coil pattern 601 may be connected to a connection pattern disposed on the lower surface of the substrate 500 via a via hole on one side.
  • One side of the second wireless communication coil pattern 602 may be disposed apart from one side of the first wireless communication coil pattern 601.
  • the second wireless communication coil pattern 602 may extend to the other side of the first wireless communication coil pattern 601 after one turn from the one side in the counterclockwise direction, for example.
  • the other side of the second wireless communication coil pattern 602 may be disposed adjacent to the other side of the first wireless communication coil pattern 601.
  • the second wireless communication coil pattern 602 may be connected to a connection pattern disposed on the lower surface of the substrate 500 via a via hole on one side.
  • 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 disposed on the lower surface of the wireless charging coil module.
  • the first heat-radiating member 400 may be disposed corresponding to the wireless charging coil module to the inside of the substrate 500 on which the wireless communication coil 600 is disposed.
  • the first radiation member 400 may include a plate, a sheet, or a layer having excellent thermal conductivity.
  • the first heat dissipating member 400 may include a metal material such as silver (Ag), copper (Cu), gold (Au), platinum (Pt), and aluminum (Al)
  • the first heat-radiating member 400 may include a graphene or a carbon nanotube.
  • 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. Specifically, the first radiation member 400 may be formed to be larger than the wireless charging coil module. However, the first radiation member 400 may be formed to be smaller than the wireless communication coil pattern. That is, the first radiation member 400 is disposed inside the first wireless communication coil pattern 601 and the second wireless communication coil pattern 602, so that the first radiation member 400 can be disposed so as not to overlap the wireless communication coil patterns have.
  • the second heat dissipation member 700 may be disposed on the lower surface 500B of the substrate 500.
  • the second radiating member 700 includes a main radiating portion 710, grounding radiating portions 720a and 720b, and connected radiating portions 730a and 730b.
  • the second heat-dissipating member 700 may include the same material as the first heat-dissipating member 700, but the present invention is not limited thereto.
  • the main heat radiating part 710 may function together with the first heat radiating member 400 disposed on the upper surface 500A 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 heat dissipating unit 710 may be disposed on the lower surface 500B of the substrate 500 inwardly to the side where the wireless communication coil 600 disposed on the upper surface 500A of the substrate 500 is disposed.
  • the main heat radiating part 710 may be formed larger than the wireless charging coil module. Also, the main radiating portion 710 may be formed to be smaller than the wireless communication coil pattern.
  • the main radiating portion 710 includes a first wireless communication 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 where it does not overlap with the wireless communication coil 600 by being disposed on the lower surface 550B.
  • 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.
  • one side of the main radiating portion 710 may be spaced apart from the inner side 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 about 4 mm to about 6 mm. More preferably, the threshold width d3 may be approximately 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.
  • 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 ground heat dissipation units 720a and 720b are disposed to face the first ground heat dissipation unit 720a and the first ground heat dissipation unit 720a disposed on one side of the lower surface 500B of the substrate 500, And a second ground heat dissipation unit 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 heat dissipation units 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 (D4) from the lower surface 500B of the substrate 500 corresponding to the position where the substrate 500 is to be formed.
  • the threshold width d4 may range from about 4 mm to about 6 mm. More preferably, the threshold width d4 may be approximately 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 .
  • connection heat dissipation units 730a and 730b may include first and second ground heat dissipation units 720a and 720b spaced apart from the main heat dissipation unit 710 and the main heat dissipation unit 710, Respectively.
  • the connection heat sinks 730a and 730b include 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 connection heat sink 730b connecting the first connection heat sink 720b.
  • 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 have critical widths d1 and d2. More specifically, the first connection heat sink 730a may be formed to have a width larger than a distance between the first ground heat sink 720a and the main heat sink 710. [ Also, the first connection heat sink 730a may have a critical width d1, and the critical width d1 may be 7mm.
  • the second connection heat dissipation part 730b may be formed to have a width larger than the second ground heat dissipation part 720b and the main heat dissipation part 710. The second connection heat sink 730b may have a critical width d2 and the critical width d2 may be about 7mm.
  • the widths d1 and d2 of the first connection heat sink 730a and the second connection heat sink 730b are not limited and may vary depending on the embodiment or performance.
  • the radiation members are formed on the top and bottom surfaces of the substrate, respectively.
  • the heat dissipation member formed on a lower surface of the substrate includes a main heat dissipation part and a ground heat dissipation part spaced apart from the main heat dissipation part.
  • the connection heat dissipation part connects the main heat dissipation part and the ground heat dissipation part.
  • the width of the gap between the main heat-radiating portion and the ground heat-radiating portion may vary depending on the degree of the difference. That is, the characteristics of the wireless communication coil according to the degree of separation between the main heat dissipation unit and the ground heat dissipation unit according to the present embodiment will be described in detail with reference to FIG.
  • 5 is a graph for explaining the charging performance of the wireless charging device to which the present embodiment is applied.
  • the second heat radiation member 700 disposed on the lower surface 500B of the substrate 500 is disposed apart from the main heat radiation portion 710 and the main heat radiation portion 710 And first and second ground heat dissipation units 720a and 720b connected by a connection heat dissipation unit 730.
  • the main heat dissipating unit 710 and the ground heat dissipating units 720a and 720b are disposed on the lower surface of the substrate 500 at a position corresponding to the wireless communication coil pattern 600 disposed on the upper surface 500A of the substrate 500 500B.
  • ≪ / RTI &gt At this time, the inductance L and the resistance R characteristics of the wireless communication coil can be varied according to the spaced critical width.
  • the wireless charging apparatus has the effect of improving the heat dissipation characteristics while maintaining the performance of the wireless communication coil pattern at the optimum level.
  • the present invention can be used in the field of wireless power transmission and reception.

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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

La présente invention concerne un dispositif de charge sans fil pourvu d'une bobine de communication sans fil. Selon le présent mode de réalisation, le dispositif de charge sans fil comprend : un module de bobines de charge sans fil comprenant une ou plusieurs bobine(s) de charge sans fil; un matériau de blindage disposé au niveau d'une partie inférieure du module de bobines de charge sans fil; un substrat sur lequel le module de bobines de charge sans fil et le matériau de blindage sont disposés; un premier élément de rayonnement de chaleur disposé sur une surface supérieure du substrat; un second élément de rayonnement de chaleur disposé sur une surface inférieure du substrat; et un motif de bobine de communication sans fil disposé sur la surface supérieure du substrat et espacé du premier élément de rayonnement de chaleur. Le second élément de rayonnement de chaleur comprend : une partie de rayonnement de chaleur de mise à la terre située dans une région de bord du substrat; une partie de rayonnement de chaleur principale située dans une région chevauchant le premier élément de rayonnement de chaleur; et une partie de rayonnement de chaleur de connexion destinée à connecter la partie de rayonnement de chaleur de mise à la terre et la partie de rayonnement de chaleur principale.
PCT/KR2018/013406 2017-11-28 2018-11-06 Dispositif de charge sans fil WO2019107779A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0160181 2017-11-28
KR1020170160181A KR20190061617A (ko) 2017-11-28 2017-11-28 무선통신코일을 구비한 무선충전장치

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WO2019107779A1 true WO2019107779A1 (fr) 2019-06-06

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WO (1) WO2019107779A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11349320B2 (en) * 2019-01-14 2022-05-31 Lg Electronics Inc. Wireless power transmitting device

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KR20150123113A (ko) * 2014-04-24 2015-11-03 엘지이노텍 주식회사 무선 전력 송신 장치
WO2016159551A1 (fr) * 2015-04-02 2016-10-06 주식회사 아모그린텍 Unité de dissipation de chaleur pour charge sans fil et module de charge électrique sans fil la comportant
US20170040830A1 (en) * 2015-08-06 2017-02-09 Samsung Electro-Mechanics Co., Ltd. Wireless power charging device
KR101723855B1 (ko) * 2017-01-23 2017-04-06 주식회사태인 무선 충전 기능이 적용된 패드 충전 시스템
KR20170072712A (ko) * 2015-12-17 2017-06-27 주식회사 아모그린텍 차량용 무선전력 전송모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150123113A (ko) * 2014-04-24 2015-11-03 엘지이노텍 주식회사 무선 전력 송신 장치
WO2016159551A1 (fr) * 2015-04-02 2016-10-06 주식회사 아모그린텍 Unité de dissipation de chaleur pour charge sans fil et module de charge électrique sans fil la comportant
US20170040830A1 (en) * 2015-08-06 2017-02-09 Samsung Electro-Mechanics Co., Ltd. Wireless power charging device
KR20170072712A (ko) * 2015-12-17 2017-06-27 주식회사 아모그린텍 차량용 무선전력 전송모듈
KR101723855B1 (ko) * 2017-01-23 2017-04-06 주식회사태인 무선 충전 기능이 적용된 패드 충전 시스템

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11349320B2 (en) * 2019-01-14 2022-05-31 Lg Electronics Inc. Wireless power transmitting device

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