WO2019031775A1 - 무선충전장치 케이스 - Google Patents
무선충전장치 케이스 Download PDFInfo
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- WO2019031775A1 WO2019031775A1 PCT/KR2018/008863 KR2018008863W WO2019031775A1 WO 2019031775 A1 WO2019031775 A1 WO 2019031775A1 KR 2018008863 W KR2018008863 W KR 2018008863W WO 2019031775 A1 WO2019031775 A1 WO 2019031775A1
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- heat insulating
- wireless power
- receiving portion
- coil
- wireless
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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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
- H01F27/02—Casings
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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
- H01F27/08—Cooling; Ventilating
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
Definitions
- the present invention relates to wireless power transmission technology, and more particularly, to a wireless charging device case that accommodates a wireless charging device.
- 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.
- Such a wireless charging system may transmit power by at least one wireless power transmission scheme (e.g., electromagnetic induction scheme, electromagnetic resonance scheme, RF wireless power transmission scheme, etc.).
- a wireless power transmission scheme e.g., electromagnetic induction scheme, electromagnetic resonance scheme, RF wireless power transmission scheme, etc.
- the wireless power transmission scheme may be based on a variety of wireless power transmission standards based on an electromagnetic induction scheme in which a magnetic field is generated in a power transmitter coil and charged using an electromagnetic induction principle in which electricity is induced in a receiver coil under the influence of its magnetic field .
- the electromagnetic induction type wireless power transmission standard may include an electromagnetic induction wireless charging technique defined by a Wireless Power Consortium (WPC) and an Air Fuel Alliance (formerly PMA, Power Matters Alliance).
- the wireless power transmission scheme may employ an electromagnetic resonance scheme in which the magnetic field generated by the transmission coil of the wireless power transmitter is tuned to a specific resonance frequency to transmit power to a nearby wireless power receiver .
- the electromagnetic resonance method may include a resonance type wireless charging technique defined in the Air Fuel Alliance (formerly A4WP, Alliance for Wireless Power) standards organization, a wireless charging technology standard organization.
- a wireless power transmission scheme may use an RF wireless power transmission scheme that transmits power to a wireless power receiver located at a remote location by applying low-power energy to the RF signal.
- the power of the wireless power receiver is increased due to the input signal of high intensity, and the emission of electromagnetic waves is increased. If the temperature increases due to the heat generation, the wireless power receiver may cause a problem such as deterioration of wireless power reception performance or damage to the internal system. In addition, a wireless power receiver may suffer from a load impairment if the load is a battery, even if the charging state is close to the buffer, receiving a high-intensity input signal. The wireless power receiver then requests the wireless power transmitter to control the power transmission according to the state of charge of the wireless power receiver.
- a wireless power receiver may reduce the power transmission of the wireless power transmitter or shut off the charging to protect the battery when the battery temperature is above a certain temperature.
- the wireless power transmitter since the wireless power transmitter can not know the charging state of the wireless power receiver, the wireless power transmitter operates passively by the wireless power receiver, so that the wireless charging can not be efficiently controlled.
- the wireless power transmitter there is a problem that the wireless charging efficiency due to the heat generation in the apparatus is reduced or the forced charging is interrupted according to the power transmission.
- the present embodiment is designed to solve the above-described problems of the prior art, and the object of the present embodiment is to provide a wireless charging device case.
- a wireless charging apparatus case comprising: a receiving part for receiving a substrate on which a transmitting coil and a driving unit for providing output power to the transmitting coil are mounted; And an insulating portion disposed on the receiving portion and forming a disposition surface on which the wireless power receiving device is disposed.
- the receiving portion and the heat insulating portion include a vent hole.
- a wireless recharging device case includes: a first accommodating portion for accommodating one or more transmission coils; A second accommodating portion for accommodating a substrate on which a driving unit for providing output power to the transmission coil is mounted; And a first heat insulating portion disposed between the second accommodating portion and the first accommodating portion.
- the second accommodating portion, the first accommodating portion, and the heat insulating portion include vent holes.
- the effect of the wireless charging device case according to the present embodiment is as follows.
- the present embodiment can provide a wireless charging device case.
- this embodiment can reduce the heat generation of the wireless charging device.
- this embodiment can maintain or increase the wireless charging efficiency due to the reduction in heat generation of the wireless charging device.
- this embodiment can prevent the charging time delay due to the invention of the wireless charging device.
- the present embodiment can have a charging efficiency and an exothermic reduction effect while taking the aesthetic specifications of the wireless charging device into consideration.
- the present embodiment can have a charging efficiency and an exothermic reduction effect while taking the aesthetic specifications of the wireless charging device into consideration.
- FIG. 1 is a block diagram illustrating a wireless charging system according to an embodiment of the present invention.
- FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment of the present invention.
- FIG. 3 is a circuit diagram for explaining a current sensor structure of the wireless power transmitter according to FIG.
- FIG. 4 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.
- FIG. 5 is a view for explaining the structure of a wireless power transmitter according to the first embodiment and a case for accommodating the same.
- FIG. 6 is a diagram for explaining a structure of a wireless power transmitter according to a second embodiment and a case for accommodating the same.
- FIG. 7 is a diagram for explaining a structure of a wireless power transmitter according to a third embodiment and a case for accommodating the same.
- FIG. 8 is a graph for explaining a charging state of the wireless power receiver when wirelessly charged using a wireless power transmitter to which the wireless charging device case of FIG. 7 is applied.
- FIG. 9 is a view for explaining a structure of a wireless power transmitter according to a fourth embodiment and a case for accommodating the same.
- FIG. 10 is a graph for explaining the charging state of the wireless power receiver when wirelessly charged using the wireless power transmitter to which the wireless charging device case of FIG. 9 is applied.
- FIG. 11 is a view for explaining a structure of a wireless power transmitter according to a fifth embodiment and a case for accommodating the same.
- FIG. 12 is a view for explaining the structure of a wireless power transmitter according to a sixth embodiment and a case for accommodating the same.
- FIG. 13 is a graph for explaining a charging state of a wireless power receiver when wirelessly charged using a wireless power transmitter to which the wireless charging device case of FIG. 12 is applied.
- FIG. 14 is a graph showing a current change, a temperature change, and a charging rate change according to a charging state of a wireless power receiver when wirelessly charged using a wireless power transmitter of a wireless charging device case to which a seventh embodiment is applied.
- 15 is a view for explaining a structure of a wireless power transmitter according to a seventh embodiment and a case for accommodating the wireless power transmitter.
- 16 is a view for explaining a structure of a wireless power transmitter according to an eighth embodiment and a case for accommodating the same.
- 17 is a view for explaining a structure of a wireless power transmitter according to a ninth embodiment and a case for accommodating the wireless power transmitter.
- FIG. 18 is a view for explaining a structure of a wireless power transmitter according to a tenth embodiment and a case for accommodating the same.
- the terms used in the embodiments of the present invention are intended to illustrate the embodiments and are not intended to limit the present invention.
- the singular forms may include plural forms unless otherwise specified in the text, and may be combined as A, B, and C when described as "at least one (or more than one) of B and C" ≪ / RTI > and any combination thereof.
- terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms are not limited to the nature, order or order of the constituent elements.
- an apparatus for transmitting wireless power on a wireless power charging system includes a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a wireless power transmitter, a transmitter, a transmitter, a transmitter, , , A wireless power transmission device, a wireless power transmitter, a wireless charging device, and the like.
- a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a wireless power receiving device, a receiving terminal, a receiving side, a receiving device, a receiver Terminals and the like can be used in combination.
- the wireless charging device may be configured as a pad type, a cradle type, an access point (AP) type, a small base type, a stand type, a ceiling embedded type, a wall type, Power may be transmitted to the device.
- AP access point
- a wireless power transmitter can be used not only on a desk or on a table, but also developed for automobiles and used in a vehicle.
- a wireless power transmitter installed in a vehicle can be provided in a form of a stand that can be easily and stably fixed and mounted.
- a wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.
- a wireless power receiver may include at least one wireless power transmission scheme and may receive wireless power from two or more wireless power transmitters at the same time.
- the wireless power transmission scheme may include at least one of the electromagnetic induction scheme, the electromagnetic resonance scheme, and the RF wireless power transmission scheme.
- the wireless power receiving means for supporting the electromagnetic induction method includes a wireless power consortium (WPC), which is a wireless charging technology standard organization, and an electromagnetic induction wireless charging technique defined by the Air Fuel Alliance (formerly PMA, Power Matters Alliance) .
- the wireless power receiving means supporting the electromagnetic resonance method may include a resonance wireless charging technique defined in the Air Fuel Alliance (formerly Alliance for Wireless Power) standard mechanism, a wireless charging technology standard organization.
- a wireless power transmitter and a wireless power receiver that constitute a wireless power system can exchange control signals or information through in-band communication or Bluetooth low energy (BLE) communication.
- the in-band communication and the BLE communication can be performed by a pulse width modulation method, a frequency modulation method, a phase modulation method, an amplitude modulation method, an amplitude and phase modulation method, and the like.
- the wireless power receiver can transmit various control signals and information to the wireless power transmitter by generating a feedback signal by switching on / off the current induced through the reception coil in a predetermined pattern.
- the information transmitted by the wireless power receiver may include various status information including received power intensity information.
- the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.
- FIG. 1 is a block diagram for explaining a wireless charging system according to an embodiment.
- the wireless charging system includes a wireless power transmission terminal 10 for wirelessly transmitting power, a wireless power receiving terminal 20 for receiving the transmitted power, and an electronic device 30 Lt; / RTI >
- the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 can perform in-band communication in which information is exchanged using the same frequency band as 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 different 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 the control information exchanged between the transmitting and receiving end will become more apparent through the description of the embodiments to be described later.
- the in-band communication and the out-of-band communication may provide bidirectional communication, but the present invention is not limited thereto. In another embodiment, the in-band communication and the out-of-band communication may be provided.
- the unidirectional communication may be that the wireless power receiving terminal 20 transmits information only to the wireless power transmitting terminal 10, but the present invention is not limited thereto, and the wireless power transmitting terminal 10 may transmit information Lt; / RTI >
- bidirectional communication is possible between the wireless power receiving terminal 20 and the wireless power transmitting terminal 10, but information can be transmitted only by any one device at any time.
- the wireless power receiving terminal 20 may acquire various status information of the electronic device 30.
- the status information of the electronic device 30 may include current power usage information, information for identifying a running application, CPU usage information, battery charge status information, battery output voltage / current information, And is information obtainable from the electronic device 30 and available for wireless power control.
- FIG. 2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment.
- FIG. 3 is a circuit diagram illustrating a structure of a current sensor of the wireless power transmitter of FIG.
- 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, and a timer 280.
- 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 converter 210 may include a DC / DC converter 211 and an amplifier 212.
- the DC / DC converting unit 211 may convert the DC power supplied from the power supply unit 100 into a DC power having a specific intensity according to a control signal of the controller 240.
- the amplifier 212 may adjust the intensity of the DC / DC converted power according to the control signal of the controller 240.
- the control unit 240 may receive the power reception status information or the power control signal of the wireless power receiver through the wireless charging communication unit 230 and may receive the power control signal based on the received power reception status information or the power control signal, ) Can be adjusted dynamically.
- the power reception status information may include, but is not limited to, intensity information of the rectifier output voltage, intensity information of the current applied to the reception coil, and the like.
- the power control signal may include a signal for requesting power increase, a signal for requesting power reduction, and the like.
- the current sensor 250 can measure an input current input to the driving unit 221.
- the current sensor 250 may provide the measured input current value to the control unit 240.
- the current sensor 240 may sense the input current input to the driving unit 2210 of the power transfer unit 220 and provide the sensed sensing voltage Vsense to the control unit 240 have.
- the input current may be the rail current (Ir).
- the rail current Ir may be a current flowing from the power conversion unit 210 to the driving unit 221.
- the rail current Ir may be a current flowing from the power supply unit 100 to the driving unit 221 when the driving unit 221 receives power directly from the power supply unit 100 by the power conversion unit 210 .
- the current sensor 250 may include a sensing resistor R1, a first auxiliary capacitor C1, a second auxiliary capacitor C2, and an amplifier 251.
- the sensing resistor R1 generates a voltage difference due to the rail current Ir, and can input the generated voltage difference to the amplifier 251.
- the sensing resistor R1 may be connected in series between the power conversion unit 210 and the power transfer unit 220.
- Both ends of the sensing resistor R1 may be input to the non-inverting input terminal IN + and the inverting input terminal IN- of the amplifier 251, respectively.
- the first auxiliary capacitor C1 can store the voltages at both ends of the sensing resistor R1 to increase the accuracy of the sensing measurement.
- the first auxiliary capacitor C1 may be connected in parallel with the sensing resistor R1.
- the amplifier 251 can amplify the voltage difference input by the sensing resistor R 1 with the gain A (Gain A) and output it as the sensing voltage Vsense.
- the amplifier 251 can receive the driving voltage Vcc and the ground power and drive the same.
- the second auxiliary capacitor C2 can remove the noise of the driving voltage Vcc input to the amplifier 251. [
- the second auxiliary capacitor C2 may be connected at one end to the driving voltage Vcc input terminal of the amplifier 251 and at the other end to the ground power supply.
- the controller 240 may determine the state of charge of the wireless power receiver based on the input current value measured by the current sensor 250. That is, the controller 240 can determine the state of charge of the wireless power receiver through the change of the input current.
- the charging state of the wireless power receiver may include a plurality of charging states.
- the charging states of the plurality of wireless power receivers may include first through fourth charging states.
- the first to sixth currents may flow in accordance with the first to fourth charging states of the input current. More specifically, the first charging state of the wireless power receiver may be wireless charging in a normal charging mode, a medium power charging mode, or a fast charging mode. That is, the first charging state of the wireless power receiver may be a state in which the charging power by the wireless power receiver is not limited according to the power transmission contract.
- the input current of the wireless power transmitter in a first state of charge of the wireless power receiver may flow through a first current.
- the second charging state of the wireless power receiver may be such that the charging power is limited such that the wireless power receiver reaches a predetermined temperature below a predetermined battery charging rate.
- the input current of the wireless power transmission device may flow through a second current.
- the third state of charge of the wireless power receiver may be a state where the wireless power receiver has reached a predetermined temperature above a predetermined battery charge rate and the wireless charging is interrupted.
- the input current of the wireless power transmitter may flow a third current.
- the fourth state of charge of the wireless power receiver may be a state in which the wireless power receiver has phased the charge power as the battery charge reaches a predetermined charge rate close to the buffer.
- the input current of the wireless power transmitter in the fourth charging state of the wireless power receiver may flow in the fourth through sixth current sequences.
- the control unit 240 may determine that the wireless power receiver is in the first charging state when the input current is the first current. Also, the controller 240 may determine that the wireless power receiver is in the second charging state when the input current is the second current. Also, the controller 240 may determine that the wireless power receiver is in the third charging state when the input current is the third current. Also, the controller 240 may determine that the wireless power receiver is in the fourth charging state when the input current is sequentially changed from the fourth current to the sixth current.
- the control unit 240 may control at least one of the power unit 100 and the power conversion unit 210 according to the charging state of the wireless power receiver.
- the control unit 240 may transmit power at a lower power than the charging power intensity according to the request of the wireless power receiver in the second charging state of the wireless power receiver.
- the input current of the wireless power transmitter at a charging power intensity required by the wireless power receiver in the second charging state of the wireless power receiver may be a second current.
- the controller 240 further reduces the input current to a level lower than that of the second current so as to provide a transmission power lower than the charging power intensity required by the wireless power receiver.
- the control unit 240 may stop the wireless charging in the third charging state of the wireless power receiver. More specifically, when the wireless power receiver is in the third charging state, the controller 240 can cut off the power supply from the power supply unit 100 or block the supply of power to the amplifier 212. Thereafter, the control unit 240 can restart the wireless charging when a predetermined time has elapsed or when the internal temperature drops by a predetermined temperature. Accordingly, the wireless power transmitter according to an exemplary embodiment can prevent an overheating phenomenon of the wireless power receiver.
- the temperature sensor 260 may measure the internal temperature of the wireless power transmitter 200 and provide the measurement result to the control unit 240. More specifically, the temperature sensor 260 may include one or more temperature sensors. As shown in FIG. 4, 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 the power supplied from the power supply unit 100 or cut off power supplied to the amplifier 212.
- 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 controller 240 may restart the wireless charging if the internal temperature of the wireless power transmitter 200 drops by a predetermined temperature after the wireless charging is stopped and the third charging state of the wireless power receiver is started. For example, if the controller 240 is cooled at the first internal temperature of the wireless power transmitter 200 when the wireless charging is stopped due to the third charging state of the wireless power receiver and becomes the second internal temperature, You can restart it.
- the second internal temperature may be lower than the first internal temperature.
- the wireless power transmitter determines that the battery temperature of the wireless power receiver is lowered based on the cooling of the internal temperature of the wireless power transmitter.
- the second internal temperature may be at least 3 degrees below the first internal temperature.
- the second internal temperature may be 5 degrees below the first internal temperature. Accordingly, the wireless power transmitter according to the embodiment can prevent the wireless power transmitter from being overheated again when the wireless charging is restarted after the wireless charging is stopped due to the overheating of the wireless power receiver.
- the wireless power transmitter according to an exemplary embodiment may prevent the wireless power transmitter from being overheated again when the wireless charging is restarted, thereby reducing the wireless charging time.
- the power transmitting unit 220 transmits the power signal output from the power converting unit 210 to the wireless power receiver.
- the power transmitting unit 220 may include a driving unit 221, a selecting unit 222, and one or more transmitting coils 223.
- the driving unit 221 may generate an AC power signal having an AC component having a specific frequency inserted into the DC power signal output from the power conversion unit 210 and transmit the generated AC power signal to the transmission coil 223.
- the frequencies of the AC power signals transmitted to the plurality of transmission coils included in the transmission coil 223 may be the same or different from each other.
- the selecting unit 222 may receive an AC power signal having a specific frequency from the driving unit 221 and may transmit the AC power signal to the transmitting coil selected from among the plurality of transmitting coils.
- the coil selector 222 may control the AC power signal to be transmitted to the transmission coil selected by the controller 240 according to a predetermined control signal of the controller 240.
- the selecting unit 222 may include a switch 222 for connecting LC resonant circuits corresponding to the plurality of transmitting coils 223. In this case, The selection unit 222 may be omitted from the power transmission unit 220 when the transmission coil 223 is configured as one transmission coil.
- the transmitting coil 223 may include at least one transmitting coil and may transmit the AC power signal received from the selecting unit 222 to the receiver through the corresponding transmitting coil.
- the transmission coil 223 may include first to n-th transmission coils.
- the selection unit 222 may be implemented with a switch as shown in FIG. 4 or a multiplexer (not shown).
- the transmission coil 223 may include one capacitor 224 connected in series with a plurality of transmission coils to implement an LC resonant circuit.
- the capacitor 224 may have one end connected to the transmission coil 223 and the other end connected to the driving unit 221.
- the 'corresponding transmission coil' may mean a transmission coil having a state capable of being coupled by the electromagnetic field to the reception coil of a wireless power receiver qualified to receive power wirelessly.
- the controller 240 may determine a transmission coil to be used for wireless power transmission among a plurality of transmission coils provided based on a signal strength indicator received in response to a digital ping signal transmitted for each transmission coil You can choose dynamically.
- the control unit 240 may control the selector 222 or the multiplexer (not shown) so that the detection signals may be sequentially transmitted through the first to n-th transmission coils 223 during the first detection signal transmission procedure have. At this time, the control unit 240 can identify the time at which the sensing signal is transmitted using the timer 290. When the sensing signal transmission time comes, the controller 240 controls the selector 222 or the multiplexer So that the detection signal can be transmitted through the transmission coil. For example, the timer 290 can send a specific event signal to the control unit 240 at predetermined intervals during the ping transmission step. When the event signal is detected, the control unit 240 selects the event signal from the selection unit 222 or the multiplexer So that the digital ping can be transmitted through the corresponding transmission coil.
- the control unit 240 can restart the wireless charging when the predetermined time has elapsed using the timer 290 after the wireless charging is stopped and the third charging state of the wireless power receiver is stopped. For example, when the wireless charging is interrupted due to the third charging state of the wireless power receiver, the controller 240 may restart the wireless charging after the timer 290 has elapsed and five minutes have elapsed.
- the modulation unit 231 may modulate the control signal generated by the control unit 240 and transmit the modulated control signal to the driving unit 221.
- the modulation scheme for modulating the control signal includes a frequency shift keying (FSK) modulation scheme, a Manchester coding modulation scheme, a phase shift keying (PSK) modulation scheme, a pulse width modulation scheme, A differential bi-phase modulation method, and the like.
- the demodulator 232 can demodulate the detected signal and transmit the demodulated signal to the controller 240 when a signal received through the transmission coil is detected.
- the demodulated signal may include a signal strength indicator, an error correction (EC) indicator for power control during wireless power transmission, an end of charge indicator (EOC), an overvoltage / overcurrent / overheat indicator, but is not limited to, various status information for identifying the status of the wireless power receiver.
- the demodulating unit 232 may identify which of the transmitting coils the demodulated signal is received and may provide the controlling unit 240 with a predetermined transmitting coil identifier corresponding to the identified transmitting coil.
- the wireless power transmitter 200 may obtain the signal strength indicator through in-band communication that uses the same frequency used for wireless power transmission to communicate with the wireless power receiver.
- the wireless power transmitter 200 can transmit wireless power using the transmission coil 223, as well as exchange various information with the wireless power receiver through the transmission coil 223.
- the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmission coils 223 (i.e., first through n-th transmission coils) It should be noted that it may also perform in-band communication with the receiver.
- the storage unit 270 stores the input current value of the wireless power transmitter according to the charging state of the wireless power receiver, the charging power intensity, the charging stop state, the temperature of the wireless power transmitter for charging restart, Can be stored.
- FIG. 4 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.
- the wireless power receiver 300 includes a receiving coil 310, a rectifier 320, a DC / DC converter 330, a load 340, a sensing unit 350, 360, and a main control unit 370.
- the communication unit 360 may include at least one of a demodulation unit 361 and a modulation unit 362.
- the communication unit 360 may provide short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission.
- the AC power received through the receive coil 310 may be delivered to the rectifier 320.
- the rectifier 320 may convert the AC power to DC power and transmit it to the DC / DC converter 330.
- the DC / DC converter 330 may convert the intensity of the rectifier output DC power to a specific intensity required by the load 340 and then deliver it to the load 340.
- the receiving coil 310 may include a plurality of receiving coils (not shown), that is, first through n-th receiving coils.
- the frequency of the AC power transmitted to each of the reception coils (not shown) may be different from each other, and another embodiment may include a predetermined frequency controller having a function of adjusting LC resonance characteristics for different reception coils
- the resonance frequencies of the respective reception coils can be set differently.
- the load 340 may be a terminal including a battery or a battery.
- the sensing unit 350 may include a current sensor to measure the intensity of the charging current applied to the receiving coil 310 according to the wireless power reception and transmit the measurement result to the main control unit 370
- the sensing unit 350 may include a temperature sensor to measure the battery temperature of the wireless power receiver 300 and provide the measured temperature value to the main control unit 370.
- the load 340 is a terminal, the terminal may measure the temperature of the battery and provide it to the main control unit 370.
- the demodulation unit 361 demodulates the AC power signal between the reception coil 310 and the rectifier 320 or the DC power signal output from the rectifier 320 to identify whether the detection signal is received, As shown in FIG. At this time, the main control unit 370 can control the signal strength indicator corresponding to the detection signal to be transmitted through the modulator 362.
- the main control unit 370 may request charging power control or wireless charging stop of the wireless power transmitter 200 according to a charging state based on at least one of the battery charging rate and the battery temperature. More specifically, the main control unit 370 can request the charging power according to the power transmission contract in the first charging state.
- the intensity of the charging current may depend on the intensity of the charging power. That is, the charging current in the first charging state may be higher than the charging current in the second to fourth charging states.
- the main control unit 370 may request the wireless power transmitter 200 to lower the charging power in the second charging state. In this case, the charging current may be lower than the charging current in the first charging state.
- the main control unit 370 may request the wireless power transmitter 200 to stop charging in the third charging state.
- the intensity of the charging current may be lowest or not flowing.
- the main control unit 370 may request the wireless power transmitter 200 to gradually lower the intensity of the charging power in the fourth charging state.
- the charging current may be a form in which the charging current is sequentially lowered.
- the battery temperature of the wireless power receiver may be reduced due to heat generated by the wireless charging device case.
- the wireless power receiver may operate to limit the received wireless power to not be sent to the battery when the battery charging rate of the wireless power receiver exceeds a certain charging rate and the battery temperature of the wireless power receiver exceeds a certain temperature.
- the wireless charging device case continues to charge wirelessly, but the battery of the wireless power receiving device may not be charged.
- the temperature of the battery becomes higher than 44 ° C at a time when the charging rate of the battery exceeds 80%.
- FIG. 5 is a view for explaining the structure of a wireless power transmitter according to the first embodiment and a case for accommodating the same.
- the wireless charging device case 500 may include a receiving portion 510 and a heat insulating portion 520.
- the accommodating portion 510 accommodates a substrate 511 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 513, and a coil substrate 512 for supporting the same.
- the wireless charging device case 500 may be formed by vertically stacking the receiving portion 510 and the heat insulating portion 520 as shown in (a). At this time, the receiving portion 510 and the heat insulating portion 520 may be formed as independent spaces.
- the upper surface of the insulating portion 520 may include a placement surface 511 on which the wireless power receiver can be placed, as shown in FIG.
- the receiving part 510 can receive the substrate 511 on which the transmitting coil 513 and the driving part for supplying power to the transmitting coil 513 are mounted.
- the receiving portion 510 may have a height and a width at which the substrate 511 and the transmitting coil 513 can be received.
- the receiving portion 510 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to a placement surface 521 on which the wireless power receiver is disposed.
- the heat insulating portion 520 may be disposed on the upper portion of the receiving portion 510. Specifically, the heat insulating portion 520 can reduce the heat of the substrate 511 and the transmitting coil 513 mounted in the receiving portion 510 and reduce the heat conduction to the wireless power receiver disposed on the placing surface 521 .
- the heat insulating portion 520 has a height that can minimize thermal conduction from the receiving portion 510.
- the heat insulating portion 520 may be formed to correspond to the height of the receiving portion 510.
- the heat insulating portion 520 may be formed at a height equal to or greater than the height of the receiving portion 510.
- the width of the heat insulating portion 520 may be the same as the width of the receiving portion 510 to enhance the aesthetic effect. However, the present invention is not limited thereto, and the heat insulating portion 510 may be formed in accordance with the embodiment. The width of the receiving portion 510 may be greater than or less than the width of the receiving portion 510.
- the heat insulating portion 520 may be formed of an air gap to reduce the heat generated by the receiving portion 510 and to minimize thermal conduction. Specifically, the heat insulating portion 520 is formed to have a critical height and a width, and may be formed as an air layer.
- the heat insulating portion 520 may be filled with a heat insulating material rather than an air gap.
- the heat insulating portion 520 may be filled with a heat insulating material that can have a heat generating temperature and a heat conduction reducing effect than an air gap.
- a ventilation hole 530 may be formed in the housing part 510 and the heat insulating part 520.
- the vent hole 530 can perform the function of releasing heat in the receiving portion 510 and the heat insulating portion 520.
- vent holes 531 and 532 are formed in the receiving part 510 and the heat insulating part 520, respectively.
- the present invention is not limited thereto, and a vent hole 530 may be formed in any one of the receiving portion 510 and the heat insulating portion 520.
- the present invention is not limited thereto, and the air hole 530 may be formed flush with the side surface of the case 500, Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) is formed in the accommodating portion 510 so that the lead wiring can pass through.
- FIG. 6 is a diagram for explaining a structure of a wireless power transmitter according to a second embodiment and a case for accommodating the same.
- the wireless charging device case 600 may include a receiving portion 610 and a heat insulating portion 620.
- the receiving portion 610 accommodates a substrate 611 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 613, and a coil substrate 612 for supporting the same.
- the wireless charging device case 600 may be formed by vertically stacking the receiving portion 610 and the heat insulating portion 620 as shown in (a). At this time, the receiving portion 610 and the heat insulating portion 620 may be formed as independent spaces.
- the receiving portion 610 can receive the substrate 611 on which the transmitting coil 613 and the driving portion for supplying power to the transmitting coil 613 are mounted.
- the receiving portion 610 may have a height and a width at which the substrate 611 and the transmitting coil 613 can be accommodated.
- the receiving portion 610 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to the placement surface 622 where the wireless power receiver is located.
- the heat insulating portion 620 may be disposed on the upper portion of the receiving portion 610. Specifically, the heat insulating portion 620 reduces the heat generated by the substrate 611 and the transmitting coil 613 that are mounted in the receiving portion 610, and reduces heat conduction to the wireless power receiver disposed on the placing surface 622 have.
- the heat insulating portion 620 has a height that can minimize the heat conduction from the receiving portion 610.
- the heat insulating portion 620 may be formed corresponding to the height of the receiving portion 610.
- the heat insulating portion 620 may be formed to be less than or equal to the height of the receiving portion 610.
- the width of the heat insulating portion 620 may be the same as the width of the receiving portion 610 to enhance the aesthetic effect. However, it is not limited thereto, and the heat insulating portion 620 may be formed to have a width exceeding or less than the width of the receiving portion 610 according to the embodiment.
- the heat insulating portion 620 may include a first heat insulating portion 621 and a second heat insulating portion 622.
- the first heat insulating portion 621 may be formed on the upper portion of the receiving portion 610 and may include a heat insulating layer formed to be filled with an air gap or a heat insulating material.
- the second heat insulating portion 622 includes a heat insulating material and may be formed of a material through which transmit power of the transmitting coil 613 disposed under the first heat insulating portion 621 can be transmitted.
- the second heat insulating portion 622 is located on the first heat insulating portion 621 and may be formed of a heat insulating member including a heat insulating material. At this time, the second heat insulating portion 622 may be formed in a pad shape including a heat insulating material. Also, the second heat insulating portion 622 may be formed as a placement surface on which the wireless power receiver is disposed as shown in (b). However, the present invention is not limited thereto, and the second heat insulating portion 622 may be disposed between the placing surface and the first heat insulating portion 621.
- a ventilation hole 630 may be formed in the receiving portion 610 and the heat insulating portion 620.
- the ventilation hole 630 can perform a function for discharging heat in the receiving portion 610 and the heat insulating portion 620.
- 6, ventilation holes 631 and 632 are formed in the receiving portion 610 and the heat insulating portion 620, respectively.
- the present invention is not limited thereto, and the vent hole 630 may be formed in any one of the receiving portion 610 and the heat insulating portion 620.
- vent hole 630 may be formed to be flush with the lateral height of the case 600, Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) is formed in the accommodating portion 610 so that the lead wiring can pass through.
- the heat insulating member includes the heat insulating layer including the air gap or the heat insulating material and the heat insulating member disposed above the heat insulating layer, thereby reducing the temperature of the containing portion 610, By reducing thermal conduction to a wireless power receiver disposed on the top surface, stable wireless charging can be achieved while maintaining wireless charging efficiency.
- FIG. 7 is a view for explaining a structure of a wireless power transmitter according to a third embodiment and a case for accommodating the wireless power transmitter.
- FIG. 8 is a block diagram of a wireless power transmitter And FIG.
- the wireless charging device case 700 may include a receiving portion 710 and a heat insulating portion 720.
- the receiving portion 710 accommodates a substrate 711 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 713, and a coil substrate 712 for supporting the same.
- the wireless charging device case 700 may be formed by vertically stacking the receiving portion 710 and the heat insulating portion 720 as shown in (a). At this time, the receiving portion 710 and the heat insulating portion 720 may be formed as independent spaces.
- the receiving portion 710 can receive the substrate 711 on which the transmitting coil 713 and the driving portion for supplying power to the transmitting coil 713 are mounted.
- the receiving portion 710 may have a height and a width at which the substrate 711 and the transmitting coil 713 can be received.
- the receiving portion 710 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to the placement surface 722 where the wireless power receiver is located.
- the heat insulating portion 720 may be disposed on the upper portion of the receiving portion 710. Specifically, the heat insulating portion 720 reduces the heat generated by the substrate 711 and the transmitting coil 713 mounted in the receiving portion 710, and reduces heat conduction to the wireless power receiver disposed on the placing surface 722 have.
- the heat insulating portion 720 has a height capable of minimizing thermal conduction from the receiving portion 710.
- the heat insulating portion 720 may be formed corresponding to the height of the receiving portion 710.
- the heat insulating portion 720 may be formed to be less than or equal to the height of the receiving portion 710.
- the width of the heat insulating portion 720 may be the same as the width of the receiving portion 710 to enhance the aesthetic effect. However, it is not limited thereto, and the heat insulating portion 720 may be formed to have a width exceeding or less than the width of the receiving portion 710 according to the embodiment.
- the heat insulating portion 720 may include a first heat insulating portion 721 and a second heat insulating portion 722.
- the first heat insulating portion 721 may be formed on the upper portion of the receiving portion 710 and may be formed of a heat insulating layer formed to be filled with an air gap or a heat insulating material.
- the secondary insulator 722 may be disposed on a placement surface when a wireless power receiver is deployed.
- the second insulating portion 722 may be formed of a material including rubber.
- the second heat insulating portions 722 may be disposed on the placement surface 723 as shown in (b) of FIG.
- the second heat insulating portion 722 may be disposed in a ring shape including rubber so as to correspond to the shape of the placement surface 723. Or may be arranged to cover the placement surface 723 in a pad shape including rubber.
- the heat insulating member constituting the second heat insulating portion 722 is made of rubber, and its shape is not limited and may have various shapes and arrangement structures.
- a ventilation hole 730 may be formed in the receiving portion 710 and the heat insulating portion 720. Specifically, the ventilation hole 730 can perform the function for discharging the heat in the receiving portion 710 and the heat insulating portion 720. 7, vent holes 731 and 732 are formed in the receiving portion 710 and the heat insulating portion 720, respectively. However, the present invention is not limited thereto, and a vent hole 730 may be formed in any one of the receiving portion 710 and the heat insulating portion 720.
- vent holes 730 may be formed to be flush with the lateral height of the case 700 Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) is formed in the accommodating portion 710 so that the lead wiring can pass through.
- the wireless charging device may malfunction due to the heat generated by the substrate 711 or the transmission coil 713 during the wireless charging operation, or the wireless power receiver may not operate normally until the buffering time Can be solved.
- 8 is a graph for explaining a charging state of a wireless power receiver during a wireless charging operation using a wireless charging device case to which another embodiment is applied.
- FIG. 8 shows the battery charging current of the wireless power receiver, the battery charging rate of the wireless power receiver, and the battery temperature over time during wireless charging.
- the wireless power receiver is able to charge the battery charge current at the highest intensity when the initial charge begins.
- the battery charge rate can also rise at the highest rate.
- the battery charge rate will continue to increase to 85%, up from the previous 80%.
- the battery temperature can be maintained around 40 ° C up to the buffering point. That is, the temperature of the battery can be minimized by the case in which the heat generated in the wireless power transmitter is applied in the case of wireless charging. Therefore, the wireless power receiver and the battery can maintain a specific temperature by the heat generated by the wireless charging and the heat of the small amount of the wireless power transmitter.
- the heat generated by the wireless power transmitter by the wireless charging is conducted to the wireless power receiver, and the temperature of the battery accordingly increases as the charging time continues.
- a case structure that can reduce the heat of the wireless power transmitter and reduce the conductivity with respect to generated heat, it is possible to reduce battery temperature rise and thereby achieve stable and high efficiency battery charging
- FIG. 9 is a view for explaining a structure of a wireless power transmitter according to a fourth embodiment and a case for accommodating the wireless power transmitter.
- FIG. 10 is a block diagram of a wireless power transmitter And FIG.
- the wireless charging device case 900 may include a receiving portion 910 and a heat insulating portion 920.
- the receiving portion 910 accommodates a substrate 911 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 913, and a coil substrate 912 for supporting the substrate.
- the wireless charging device case 900 may be formed by vertically stacking the receiving portion 910 and the heat insulating portion 920 as shown in (a). At this time, the receiving portion 910 and the heat insulating portion 920 may be formed as independent spaces.
- the receiving portion 910 can receive the substrate 911 on which the transmitting coil 913 and the driving portion for supplying power to the transmitting coil 913 are mounted.
- the receiving portion 910 may have a height and a width at which the substrate 911 and the transmitting coil 913 can be accommodated.
- the receiving portion 910 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to a placement surface 922 on which the wireless power receiver is located.
- the heat insulating portion 920 may be disposed on the upper portion of the receiving portion 910. Specifically, the heat insulating portion 920 reduces the heat generated by the substrate 911 and the transmitting coil 913 that are mounted in the receiving portion 910, and reduces heat conduction to the wireless power receiver disposed on the placing surface 922 have.
- the heat insulating portion 920 has a height that can minimize heat conduction from the receiving portion 910.
- the heat insulating portion 920 may be formed corresponding to the height of the receiving portion 910.
- the heat insulating portion 920 may be formed to be less than or equal to the height of the receiving portion 910.
- the width of the heat insulating portion 920 may be the same as the width of the receiving portion 910 in order to enhance the aesthetic effect. However, it is not limited thereto, and the heat insulating portion 920 may be formed to have a width exceeding or less than the width of the receiving portion 910 according to the embodiment.
- the heat insulating portion 920 may include a first heat insulating portion 921 and a plurality of second heat insulating portions 922 and 923.
- the first heat insulating portion 921 may be formed on an upper portion of the receiving portion 910 and may be formed of a heat insulating layer formed to be filled with an air gap or a heat insulating material.
- a plurality of second heat insulating portions 922 and 923 may be disposed on the heat insulating layer 921 or may include a first heat insulating member 922 formed by a placement surface 922 on which the wireless power receiver is disposed, And a second heat insulating member 923 disposed on the upper portion of the first heat insulating member 922.
- the first heat insulating member 922 includes a heat insulating material and may be formed of a material through which transmit power of the transmitting coil 913 disposed under the first heat insulating portion 921 can be transmitted.
- the first heat insulating member 922 may be formed in a pad shape including a heat insulating material.
- the first heat insulating member 921 may be formed as a disposition surface in which the upper surface of the (b) wireless power receiver is disposed as shown in FIG.
- the present invention is not limited thereto, and the first heat insulating member 922 may be disposed between the placing surface and the first heat insulating member 921.
- the second heat insulating member 923 may be formed of a material including rubber.
- the second heat insulating members 923 may be disposed on the upper surface of the first heat insulating member 922 as shown in FIG.
- the second heat insulating member 923 may be arranged to correspond to the shape of the first heat insulating member 922 in a ring shape including rubber. Or may be arranged to cover the first heat insulating member 922 in a pad shape including rubber.
- the heat insulating member constituting the second heat insulating member 923 is made of rubber, and its shape is not limited, and may have various shapes and arrangement structures.
- a vent hole 930 may be formed in the receiving portion 910 and the heat insulating portion 920.
- the vent hole 930 can perform a function for discharging heat in the receiving portion 910 and the heat insulating portion 920.
- ventilation holes 931 and 932 are formed in the receiving portion 910 and the heat insulating portion 920, respectively.
- the present invention is not limited thereto, and the vent hole 930 may be formed in any one of the receiving portion 910 and the heat insulating portion 920.
- vent hole 930 may be formed flush with the lateral height of the case 900 Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) is formed in the accommodating portion 910 so that the lead wiring can pass through.
- the wireless charging device may malfunction due to the heat generated by the substrate 911 or the transmission coil 913 during the wireless charging operation by the case of the wireless charging device to which the another embodiment is applied, or the wireless power receiver may not operate normally until the buffering Can be solved.
- 10 is a graph for explaining a charging state of a wireless power receiver in a wireless charging operation using a wireless charging device case to which another embodiment is applied.
- FIG. 10 shows the battery charge current of the wireless power receiver, the battery charge rate of the wireless power receiver, and the battery temperature over time during wireless charging.
- the wireless power receiver is able to charge the battery charge current at the highest intensity when the initial charge begins.
- the battery charge rate can also rise at a high rate.
- the charging rate of the battery continuously increases until the buffering time (charging rate is 100%).
- the battery temperature can be maintained around 40 ° C up to the buffering point. That is, the temperature of the battery can be minimized by the case in which the heat generated in the wireless power transmitter is applied in the case of wireless charging. Therefore, the wireless power receiver and the battery can maintain a specific temperature by the heat generated by the wireless charging and the heat of the small amount of the wireless power transmitter.
- the heat generated by the wireless power transmitter by the wireless charging is conducted to the wireless power receiver, and the temperature of the battery accordingly increases as the charging time continues.
- application of a case structure that reduces the heat generation of the wireless power transmitter and reduces the conductivity with respect to generated heat can reduce the battery temperature rise, thereby realizing stable and high efficiency battery charging
- FIG. 11 is a view for explaining a structure of a wireless power transmitter according to a fifth embodiment and a case for accommodating the same.
- the wireless charging device case 1100 may include a receiving portion 1100 and a heat insulating portion 1120.
- the receiving portion 1110 accommodates a substrate 1111 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 1113, and a coil substrate 1112 for supporting the same.
- the wireless charging device case 1100 may be formed by vertically stacking the receiving portion 1110 and the heat insulating portion 1120 as shown in (a). At this time, the receiving portion 1110 and the heat insulating portion 1120 may be formed as independent spaces.
- the receiving portion 1110 can receive the substrate 1111 on which the transmitting coil 1113 and the driving portion for supplying power to the transmitting coil 1113 are mounted.
- the receiving portion 1110 may have a height and a width at which the substrate 1111 and the transmitting coil 1113 can be accommodated.
- the receiving portion 1110 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to the placement surface 1122 where the wireless power receiver is located.
- a heat insulating portion 1120 may be disposed on the upper portion of the receiving portion 1110. Specifically, the heat insulating portion 1120 reduces the heat generated by the substrate 1111 and the transmitting coil 1113 that are mounted in the receiving portion 1110, and reduces heat conduction to the wireless power receiver disposed on the placing surface 1122 have.
- the heat insulating portion 1120 has a height that can minimize the heat conduction from the receiving portion 1110.
- the heat insulating portion 1120 may be formed corresponding to the height of the receiving portion 1110.
- the heat insulating portion 1120 may be formed to be less than or equal to the height of the receiving portion 1110.
- the width of the heat insulating portion 1120 may be the same as the width of the receiving portion 1110 to enhance the aesthetic effect. However, it is not limited thereto, and the heat insulating portion 1120 may be formed to have a width exceeding or less than the width of the receiving portion 1110 according to the embodiment.
- the heat insulating portion 1120 may include a first heat insulating portion 1121 and a second heat insulating portion 1122.
- the first heat insulating portion 1121 may be formed on the upper portion of the receiving portion 1110, and may be formed of a heat insulating layer formed to be filled with an air gap or a heat insulating material.
- the second heat insulating portion 1122 may be formed of a material such as paper which can transmit transmit power of the transmission coil 613 disposed under the first heat insulating portion 621. [ At this time, the second heat insulating portion 1122 may be formed in a pad shape of a paper material.
- the second heat insulating portion 1122 may be formed as a disposition surface in which the upper surface of the (b) wireless power receiver is disposed as shown in FIG.
- the present invention is not limited thereto, and the second heat insulating portion 1122 may be disposed between the placing surface and the first heat insulating portion 1121.
- a ventilation hole 1130 may be formed in the receiving portion 1110 and the heat insulating portion 1120.
- the ventilation hole 1130 can perform the function for discharging the heat in the receiving portion 1110 and the heat insulating portion 620.
- vent holes 1131 and 1132 are formed in the receiving portion 1110 and the heat insulating portion 1120, respectively.
- the present invention is not limited thereto, and a vent hole 1130 may be formed in any one of the receiving portion 1110 and the heat insulating portion 1120.
- the present invention is not limited thereto, and the air hole 1130 may be formed to be flush with the side surface of the case 1100 Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) is formed in the accommodating portion 1110 so that the lead wiring can pass through.
- the heat insulating member includes the air gap or the heat insulating member including the heat insulating material and the paper pad disposed above the heat insulating layer, thereby reducing the temperature of the receiving portion 1110, By reducing the thermal conduction to the wireless power receiver disposed in the wireless network, the wireless charging efficiency can be maintained and stable wireless charging can be performed.
- FIG. 12 is a view for explaining a structure of a wireless power transmitter according to a sixth embodiment and a case for accommodating the wireless power transmitter according to the sixth embodiment.
- FIG. 13 is a block diagram of a wireless power transmitter And FIG.
- the wireless charging device case 1200 may include a receiving portion 1210 and a heat insulating portion 1220.
- the receiving portion 1210 accommodates a substrate 1211 for mounting a driving portion and various components required for wireless charging, a power transmitting coil 1213, and a coil substrate 1212 for supporting the substrate.
- the wireless charging device case 1200 may be formed by vertically stacking a receiving portion 1210 and a heat insulating portion 1220 as shown in (a). At this time, the receiving portion 1210 and the heat insulating portion 1220 may be formed as independent spaces.
- the receiving part 1210 can receive the substrate 1211 on which the transmitting coil 1213 and the driving part for supplying power to the transmitting coil 1213 are mounted.
- the receiving portion 910 may have a height and a width at which the substrate 1211 and the transmitting coil 1213 can be accommodated.
- the receiving portion 1210 may receive one or more transmitting coils.
- the transmit coil may be formed adjacent to the placement surface 1222 where the wireless power receiver is located.
- the heat insulating portion 1220 may be disposed on the upper portion of the receiving portion 1210. Specifically, the heat insulating portion 1220 reduces the heat generated by the substrate 1211 and the transmitting coil 1213 that are mounted on the receiving portion 1210 and reduces heat conduction to the wireless power receiver disposed on the placing surface 1222 have.
- the heat insulating portion 1220 has a height that can minimize thermal conduction from the receiving portion 1210.
- the heat insulating portion 1220 may be formed corresponding to the height of the receiving portion 1210.
- the heat insulating portion 1220 may be formed to be less than or equal to the height of the receiving portion 1210.
- the width of the heat insulating portion 1220 may be the same as the width of the receiving portion 1210 to enhance the aesthetic effect. However, the present invention is not limited thereto, and the heat insulating portion 1220 may be formed to have a width exceeding or less than the width of the receiving portion 1210 according to the embodiment.
- the heat insulating portion 1220 may include a first heat insulating portion 1221 and a plurality of second heat insulating portions 1222 and 1223.
- the first heat insulating portion 1221 may be formed on the upper portion of the receiving portion 1210 and may include a heat insulating layer formed to be filled with an air gap or a heat insulating material.
- the plurality of second heat insulating portions 1222 and 1223 may include a first heat insulating member 1222 disposed on the upper portion of the heat insulating layer 1221 and a second heat insulating member 1222 disposed on the upper portion of the first heat insulating member 1222. [ And may be formed as a double heat insulating member 1223.
- the first heat insulating member 1222 includes a heat insulating material and may be formed of a material through which transmit power of the transmitting coil 1213 disposed under the first heat insulating portion 1221 can be transmitted.
- the first heat insulating member 1222 may be formed in a pad shape including a heat insulating material.
- the second heat insulating member 1222 may be formed of a material such as paper that can transmit transmit power of the transmission coil 1213 disposed under the first heat insulating portion 1221.
- the second heat insulating member 1223 may be formed in a pad shape of paper.
- the second heat insulating portion 1223 may be formed as an arrangement surface in which the upper surface of the (b) wireless power receiver is disposed as shown in FIG.
- the present invention is not limited thereto, and the second heat insulating member 1223 may be disposed between the placing surface and the first heat insulating member 1222.
- a ventilation hole 1230 may be formed in the receiving portion 1210 and the heat insulating portion 1220.
- the vent hole 1230 can perform the function of discharging the heat in the receiving portion 1210 and the heat insulating portion 1220.
- ventilation holes 1231 and 1232 are formed in the accommodating portion 1210 and the heat insulating portion 1220, respectively.
- the present invention is not limited thereto, and a vent hole 1230 may be formed in any one of the receiving portion 1210 and the heat insulating portion 1220.
- the present invention is not limited thereto, and the air hole 1230 may be formed to be flush with the lateral height of the case 1200 Or may be formed to be recessed inward, and may be formed in various shapes according to the embodiments.
- a wiring hole (not shown) may be formed in the accommodating portion 1210 so that the lead wiring can pass therethrough.
- the wireless charging device may malfunction due to the heat generated by the substrate 1211 or the transmission coil 1213 during the wireless charging operation by the wireless charging device case applied to the another embodiment, or the wireless power receiver may not operate normally until the buffering Can be solved.
- 13 is a graph for explaining a charging state of a wireless power receiver during a wireless charging operation using a wireless charging device case to which another embodiment is applied.
- FIG. 13 shows the battery charging current of the wireless power receiver, the battery charging rate of the wireless power receiver, and the battery temperature over time during wireless charging.
- the wireless power receiver is able to charge the battery charge current at the highest intensity when the initial charge begins.
- the battery charge rate can also rise at a high rate.
- the charging rate of the battery continuously increases until the buffering time (charging rate is 100%).
- the battery temperature can be maintained around 40 ° C up to the buffering point. That is, the temperature of the battery can be minimized by the case in which the heat generated in the wireless power transmitter is applied in the case of wireless charging. Therefore, the wireless power receiver and the battery can maintain a specific temperature by the heat generated by the wireless charging and the heat of the small amount of the wireless power transmitter.
- the heat generated by the wireless power transmitter by the wireless charging is conducted to the wireless power receiver, and the temperature of the battery accordingly increases as the charging time continues.
- application of a case structure that reduces the heat generation of the wireless power transmitter and reduces the conductivity with respect to generated heat can reduce the battery temperature rise, thereby realizing stable and high efficiency battery charging
- the substrate accommodating portion is referred to as a first accommodating portion
- the coil accommodating portion may be referred to as a second accommodating portion, but may be referred to as a reverse.
- FIG. 14 is a graph showing a current change, a temperature change, and a charging rate change according to a charging state of a wireless power receiver when wirelessly charged using a wireless power transmitter of a wireless charging device case to which a seventh embodiment is applied
- FIG. 4 is a diagram illustrating a structure of a wireless power transmitter according to an example and a case for accommodating the same.
- the wireless charging device case 1500 includes a substrate accommodating portion 1510 for accommodating a substrate for mounting a driver and various components required for wireless charging.
- the wireless charging device case 1500 may be formed by vertically stacking a substrate receiving portion 1510, a heat insulating portion 1520 and a coil receiving portion 1530 as shown in FIG. At this time, the substrate receiving portion 1510, the coil receiving portion 1530, and the heat insulating portion 1520 may be formed as independent spaces.
- the top surface of the coil receiving portion 1530 may form a placement surface 1550 on which the wireless power receiver may be placed, as shown in FIG.
- the substrate receiving portion 1510 may receive a substrate 1512 mounted with a driving portion for providing output power to the transmission coil.
- the substrate receiving portion 1510 may have a height and a width at which the substrate 1512 can be received.
- the substrate receiving portion 1510 may have a size larger than that of the substrate 1512.
- the board receiving portion 1510 may receive the board 1512 mounted with the driving portion, or the driving portion may be mounted directly to the board receiving portion 1510. That is, one surface of the substrate receiving portion 1510 may be formed as a substrate on which the driving portion can be mounted.
- the coil receiving portion 1530 can accommodate one or more transmitting coils.
- the coil receiving portion 1530 is preferably formed adjacent to the placement surface 1550 where the wireless power receiver is located.
- the coil receiving portion 1530 may be provided with a coil 1532 for wireless power transmission. At this time, the coil receiving portion 1530 can directly mount the coil 1532 or accommodate the layer on which the coil 1532 is mounted.
- a heat insulating portion 1520 may be disposed between the substrate receiving portion 1510 and the coil receiving portion 1530. Specifically, the heat insulating portion 1520 reduces the heat generated by the substrate 1512 mounted on the substrate receiving portion 1510 and reduces the heat conduction to the coil 1532 accommodated in the coil receiving portion 1530. The heat insulating portion 1520 can reduce the interference between the substrate 1512 and the coil 1532 by separating the substrate receiving portion 1510 and the coil receiving portion 1530 from each other.
- the heat insulating portion 1520 preferably has a height that can separate the substrate receiving portion 1510 and the coil receiving portion 1530 from each other and minimize thermal conduction. Specifically, the heat insulating portion 1520 may be formed corresponding to the height of the substrate receiving portion 1510. Preferably, the heat insulating portion 1520 may have a height similar to or higher than the height of the substrate receiving portion 1510.
- the width of the heat insulating portion 1520 may be the same as the width of the substrate receiving portion 1510 and the coil receiving portion 1530 to enhance the aesthetic effect.
- the present invention is not limited thereto, and the heat insulating portion 1520 may be formed to have a width exceeding or less than the width of the substrate receiving portion 1510 or the coil receiving portion 1530 according to the embodiment.
- the heat insulating portion 1520 may be formed as an air gap to reduce the heat generated in the substrate accommodating portion 1510. Specifically, the heat insulating portion 1520 is formed to have a critical height and width, and the heat insulating portion 1520 is formed of an air layer to reduce the heat generating temperature within the substrate receiving portion 1510.
- the heat insulating portion 1520 may be filled with a heat insulating material, not an air gap, in the heat insulating portion 1520.
- the heat insulating material 1520 may be filled with a heat generating material so as to have an effect of reducing a heat generation temperature and a heat transmission rather than an air gap.
- At least one of the substrate receiving portion 1510, the heat insulating portion 1520, and the coil receiving portion 1530 may have a vent hole 1540 formed therein.
- the ventilation hole 1540 can perform a function of emitting heat generated in the substrate receiving portion 1510, the heat insulating portion 1520 and the coil receiving portion 1530.
- 15, air holes 1541, 1542, and 1543 are formed in the substrate receiving portion 1510, the heat insulating portion 1520, and the coil receiving portion 1530, respectively.
- the present invention is not limited thereto, and a vent hole 1540 may be formed in any one of the substrate receiving portion 1510, the heat insulating portion 1520, and the coil receiving portion 1530.
- the ventilation hole 1540 is formed at a place where a heat generation temperature is high and heat radiation is required.
- the vent holes 1540 are preferably formed in the substrate receiving portion 1510 and the heat insulating portion 1520, respectively. That is, the ventilation hole 1540 may be formed in one or more of the substrate receiving portion 1510, the heat insulating portion 1520, and the coil receiving portion 1530.
- the vent hole 1540 may be formed in a flat shape having the same height as the side surface of the case 1500, Or may be formed in a shape that is recessed inward, and may be formed in various shapes according to the shape of the embodiment.
- a wiring hole (not shown) may be formed in at least one of the substrate accommodating portion 1510, the heat insulating portion 1520, and the coil accommodating portion 1530 to allow the lead wiring to pass therethrough.
- the substrate receiving portion 1510, the heat insulating portion 1520, and the coil receiving portion 1530 may be formed by laminating structures formed as independent spaces.
- the heat generated in each of the substrate accommodating portion 1510, the heat insulating portion 1520, and the coil accommodating portion 1530 can be efficiently discharged and reduced by being formed to be stacked in independent spaces.
- the wireless charging device may malfunction due to the heat generated by the substrate 1512 or the coil 1532 during the wireless charging operation by the wireless charging device case to which the embodiment is applied, or the wireless power receiver may not operate normally until the buffering time .
- 14 is a graph for explaining a charging state of a wireless power receiver during a wireless charging operation using a wireless charging device case to which an embodiment is applied.
- FIG. 14 shows the battery charge current of the wireless power receiver, the battery charge rate of the wireless power receiver, and the battery temperature over time during wireless charging.
- the wireless power receiver is able to charge the battery charge current at the highest intensity when the initial charge begins.
- the battery temperature may also increase during wireless charging.
- the battery charge rate can also rise at the highest rate.
- the charging rate of the battery continuously increases until the buffering point (charging rate is 100%).
- the temperature of the battery can be maintained around 40 ° C up to the buffering point. That is, the temperature of the battery can be minimized by the case in which the heat generated in the wireless power transmitter is applied in the case of wireless charging. Therefore, the wireless power receiver and the battery can maintain a specific temperature by the heat generated by the wireless charging and the heat of the small amount of the wireless power transmitter.
- the heat generated by the wireless power transmitter by wireless charging is conducted to the wireless power receiver, and the temperature of the battery is increased as the charging time is continued.
- application of a case structure that reduces the heat generation of the wireless power transmitter and reduces the conductivity with respect to generated heat can reduce the battery temperature rise, thereby realizing stable and high efficiency battery charging .
- 16 is a view for explaining a structure of a wireless power transmitter according to an eighth embodiment and a case for accommodating the same.
- the wireless charging device case 1600 includes a substrate accommodating portion 1610 for accommodating a substrate for mounting a driver and various components required for wireless charging, Coil receiving portion 1630 and a plurality of heat insulating portions 1620 and 1640.
- the wireless charging device case 1600 is configured such that the substrate accommodating portion 1610, the first heat insulating portion 1620, the coil accommodating portion 1630, and the second heat insulating portion 1640 are arranged in a vertical direction As shown in FIG. At this time, the substrate receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630, and the second heat insulating portion 1640 may be formed as independent spaces.
- the top surface of the secondary adiabatic portion 1640 may form a placement surface 1660 on which the wireless power receiver can be placed, as shown in example (b).
- the substrate receiving portion 1610 may receive a substrate 1612 mounted with a driving portion for providing output power to the transmission coil.
- the substrate receiving portion 1610 may have a height and a width at which the substrate 1612 can be received.
- the substrate receiving portion 1610 may have a size larger than that of the substrate 1612.
- the board receiving portion 1610 may receive the board 1612 mounted with the driving portion, or the driving portion may be mounted directly to the board receiving portion 1610. That is, one surface of the substrate receiving portion 1610 may be formed of a substrate on which the driving portion can be mounted.
- the coil receiving portion 1630 can accommodate one or more coils.
- the coil receiving portion 1630 is preferably formed adjacent to the placement surface 1660 when the wireless power receiver is deployed.
- the second heat insulating portion 1640 is formed on the upper portion of the coil receiving portion 1630, so that the heat generation of the coil receiving portion 1630 can be reduced.
- the coil receiving portion 1630 may be disposed in the coil 1632 for wireless power transmission. At this time, the coil receiving portion 1630 can directly mount the coil 1632 or accommodate the layer on which the coil 1632 is mounted.
- Insulating portions 1620 and 1640 may be disposed between the substrate receiving portion 1610 and the coil receiving portion 1630 and between the coil receiving portion 1630 and the wireless power receiver placing surface 1660, respectively.
- the first heat insulating portion 1620 disposed between the substrate receiving portion 1610 and the coil receiving portion 1630 reduces the heat generated by the substrate 1612 mounted on the substrate receiving portion 1610, The heat conduction to the coil 1632 accommodated in the coil 1630 can be reduced.
- the first heat insulating portion 1620 can reduce the interference between the substrate 1612 and the coil 1632 by separating the substrate receiving portion 1610 and the coil receiving portion 1630 from each other.
- the second insulating portion 1640 may also be disposed between the coil receiving portion 1630 and the wireless power receiver placement surface 1660.
- the second adiabatic portion 1640 can reduce heat generation of the coil 1632 received in the coil receiving portion 1630 and reduce heat conduction to the wireless power receiver (not shown) disposed on the placement surface 1660.
- the first heat insulating portion 1620 preferably has a height that can separate the substrate receiving portion 1610 and the coil receiving portion 1630 from each other and minimize thermal conduction. Specifically, the first heat insulating portion 1620 may be formed to correspond to the height of the substrate receiving portion 1610. The first heat insulating portion 1620 may have a height similar to or higher than the height of the substrate receiving portion 1610.
- the second heat insulating portion 1640 preferably has a height that does not reduce the wireless charging efficiency while minimizing heat conduction by separating the coil receiving portion 1630 from the placing surface 1660.
- the second heat insulating portion 1640 may be formed to correspond to the height of the coil receiving portion 1630.
- the second heat insulating portion 1640 may have a height similar to or less than the height of the coil receiving portion 1630. That is, when the height of the second adiabatic portion 1640 is increased, the distance between the coil 1632 and the wireless power receiver (not shown) disposed on the placement surface 1660 is increased, and accordingly, the wireless charging efficiency is reduced It is because.
- the present invention is not limited thereto, and may be formed at various heights depending on the constituent embodiment.
- the widths of the first and second heat insulating portions 1620 and 1640 are formed to be equal to the widths of the board receiving portion 1610, the coil demand portion 1630 and the placing surface 1660 in order to enhance the aesthetic effect.
- the present invention is not limited thereto, and the first and second heat insulating portions 1620 and 1640 may have a width that exceeds the width of the substrate receiving portion 1610, the coil receiving portion 1630, and the placement surface 1660 Lt; / RTI > The height and width of the first and second heat insulating portions 1620 and 1640 may be different.
- first and second heat insulating portions 1620 and 1640 may be formed as air gaps for heat generation and thermal conduction reduction.
- the first and second heat insulating portions 1620 and 1640 are formed to have a critical height and width, and are formed of an air layer to reduce the heat generation temperature within the substrate receiving portion 1610 and the coil receiving portion 1630 .
- first and second heat insulating portions 1620 and 1640 may be filled with a heat insulating material rather than an air gap.
- first heat insulating portion 1620 and the second heat insulating portion 1640 may be filled with a heat generating material so as to have an effect of reducing a heat generation temperature and a heat transfer more than an air gap.
- the first heat insulating portion 1620 and the second heat insulating portion 1640 may be filled with air gaps or heat insulating textiles, or may have different configurations.
- At least one of the substrate receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630 and the second heat insulating portion 1640 may have a ventilation hole 1650 formed therein.
- the ventilation hole 1650 functions to discharge heat generated in the substrate receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630, and the second heat insulating portion 1640 .
- vent holes 1651, 1652, 1653, and 1654 are formed in the board receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630, and the second heat insulating portion 1640, .
- the present invention is not limited thereto, and any one of the substrate receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630, and the second heat insulating portion 1640, or the heat insulating portions 1620 and 1640, (1650) can be formed.
- the ventilation hole 1650 is formed at a place where the heat generation temperature is high and heat radiation is required.
- the ventilation brush 1650 is preferably formed on the substrate receiving portion 1610 and the heat insulating portions 1620 and 1640, respectively. That is, the ventilation hole 1650 may be formed in one or more of the substrate receiving portion 1610, the first heat insulating portion 1620, the coil receiving portion 1630, and the second heat insulating portion 1640.
- vent hole 1650 may be formed in a flat shape having the same height as the side surface of the case 1600, Or may be formed in a shape that is recessed inward, and may be formed in various shapes according to the shape of the embodiment.
- a wiring hole (not shown) is formed in at least one of the substrate accommodating portion 1610, the first heat insulating portion 1620, the coil accommodating portion 1630, and the second heat insulating portion 1640, Can be done.
- 17 is a view for explaining a structure of a wireless power transmitter according to a ninth embodiment and a case for accommodating the wireless power transmitter.
- a wireless charging device case 1700 includes a substrate accommodating portion 1710 that accommodates a substrate for mounting a driver and various components required for wireless charging. And a coil receiving portion 1720 for receiving the power transmitting coil 1722.
- the wireless charging device case 1700 may be formed by vertically stacking a substrate receiving portion 1710 and a coil receiving portion 1720 as shown in (a). At this time, the substrate receiving portion 1710 and the coil receiving portion 1720 may be formed as independent spaces.
- the wireless charging device case 1700 has a high height of the substrate receiving portion 1710.
- the wireless filler case 1700 may form a placement surface 1740 on which the upper surface of the coil receiving portion 1720 can be arranged with a wireless power receiver as shown in FIG. have.
- the substrate receiving portion 1710 may receive a substrate 1712 mounted with a driving portion for providing output power to the transmission coil.
- the substrate receiving portion 1710 may have a height and a width at which the substrate 1712 can be received.
- the substrate receiving portion 1710 may have a size larger than that of the substrate 1712.
- the board receiving portion 1710 may receive the board 1712 mounted with the driving portion, or the driving portion may be mounted directly to the board receiving portion 1710. That is, one surface of the substrate receiving portion 1710 can be formed as a substrate on which the driving portion can be mounted.
- the height of the substrate receiving portion 1710 is higher than the height of the substrate 1712, so that the heat insulating portion can be integrally formed in the substrate receiving portion 1710.
- the height of the substrate receiving portion 1710 may be about two or three times as high as the height of the substrate 1712. However, the present invention is not limited thereto, and a height sufficient to reduce and disperse the heat generated by the substrate 1712 is sufficient.
- the coil receiving portion 1720 can accommodate one or more transmitting coils.
- the coil receiving portion 1720 is preferably formed adjacent to the placement surface 1740 where the wireless power receiver is located.
- the coil receiving portion 1720 may be provided with a coil 1722 for wireless power transmission. At this time, the coil receiving portion 1720 can directly mount the coil 1722 or accommodate the layer on which the coil 1722 is mounted.
- At least one of the substrate receiving portion 1710 and the coil receiving portion 1720 may have a ventilation hole 1730 formed therein.
- the ventilation hole 1730 can perform a function for emitting heat generated in the substrate receiving portion 1710 and the coil receiving portion 1720.
- 17, vent holes 1731, 1732, and 1733 are formed in the substrate receiving portion 1710 and the coil receiving portion 1720, respectively.
- the present invention is not limited thereto, and a vent hole 1730 may be formed in any one of the substrate accommodating portion 1710 and the coil accommodating portion 1720.
- the ventilation hole 1730 is formed at a place where a heat generation temperature is high and heat radiation is required. It is preferable that the vent holes 1730 are formed in the substrate receiving portion 1710).
- the substrate receiving portion 1710 may have a high height, a plurality of vent holes may be formed in the substrate receiving portion 1710. That is, the ventilation hole 1730 may be formed in one or more of the substrate accommodating portion 1710 and the coil accommodating portion 1720.
- vent holes 1720 are formed in a protruded form in the present embodiment, the vent holes 1720 are not limited to the flat shape of the side of the case 1700, Or may be formed in a shape that is recessed inward, and may be formed in various shapes according to the shape of the embodiment.
- At least one or each of the substrate receiving portion 1710 and the coil receiving portion 1720 may be provided with a wiring hole (not shown) so that the lead wiring can pass therethrough.
- FIG. 18 is a view for explaining a structure of a wireless power transmitter according to a tenth embodiment and a case for accommodating the same.
- a wireless charging device case 1800 includes a substrate receiving portion 1810 for receiving a substrate for mounting a driver and various components required for wireless charging. And a coil receiving portion 1820 and a heat insulating portion 1830 that accommodate the power transmitting coil 1822.
- the wireless charging device case 1800 may be formed by vertically stacking a substrate receiving portion 1810, a coil receiving portion 1820, and a heat insulating portion 1830 as shown in (a). At this time, the substrate receiving portion 1810, the coil receiving portion 1820, and the heat insulating portion 1830 may be formed as independent spaces.
- the wireless charging device case 1800 according to another embodiment of the present invention has a high height of the substrate receiving portion 1810.
- the wireless filler device case 1800 may form a placement surface 1850 on which the top surface of the coil receiving portion 1820 can be placed with a wireless power receiver as shown in FIG. have.
- the substrate receiving portion 1810 may receive a substrate 1712 mounted with a driving portion for providing output power to the transmission coil.
- the substrate receiving portion 1810 may have a height and a width at which the substrate 1812 can be received.
- the substrate receiving portion 1810 may have a size larger than that of the substrate 1812.
- the board receiving portion 1810 may receive the board 1812 on which the driving portion is mounted, or the driving portion may be directly mounted on the board receiving portion 1810. That is, one side of the substrate receiving portion 1810 may be formed as a substrate on which the driving portion can be mounted.
- the height of the substrate receiving portion 1810 is higher than the height of the substrate 1812, so that the heat insulating portion can be integrally formed in the substrate receiving portion 1810.
- the height of the substrate receiving portion 1810 may be about two or three times as high as the height of the substrate 1812. However, the present invention is not limited thereto, and a height sufficient to reduce and disperse the heat of the substrate 1812 is sufficient.
- the coil receiving portion 1820 can accommodate one or more transmitting coils.
- the coil receiving portion 1820 is preferably formed adjacent to the placement surface 1850 where the wireless power receiver is located.
- the coil receiving portion 1820 may be provided with a coil 1822 for wireless power transmission. At this time, the coil receiving portion 1820 can directly mount the coil 1822 or accommodate the layer on which the coil 1822 is mounted.
- the insulating portion 1830 may be disposed between the coil receiving portion 1820 and the wireless power receiver placement surface 1850.
- the heat insulating portion 1830 can reduce the heat of the coil 1822 accommodated in the coil receiving portion 1820 and reduce the heat conduction to the wireless power receiver (not shown) disposed on the placing surface 1850.
- the heat insulating portion 1830 has a height that does not reduce the wireless charging efficiency while minimizing thermal conduction by separating the coil receiving portion 1810 from the placement surface 1850.
- the heat insulating portion 1830 may be formed to correspond to the height of the coil receiving portion 1820.
- the heat insulating portion 1830 may have a height similar to or less than the height of the coil receiving portion 1820. That is, when the height of the heat insulating portion 1830 is increased, the distance between the coil 1822 and the wireless power receiver (not shown) disposed on the placement surface 1850 is increased, and accordingly, the wireless charging efficiency can be reduced Because.
- the present invention is not limited thereto, and may be formed at various heights depending on the constituent embodiment.
- At least one of the substrate receiving portion 1810, the coil receiving portion 1820, and the heat insulating portion 1830 may have a vent hole 1840 formed therein.
- the ventilation holes 1840 may serve to discharge heat generated in the coil receiving portion 1820 and the heat insulating portion 1830 of the substrate receiving portion 1810.
- vent holes 1841, 1842, 1843 and 1844 are formed in the substrate receiving portion 1810, the coil receiving portion 1820, and the heat insulating portion 1830, respectively.
- a vent hole 1840 may be formed in any one of the substrate receiving portion 1810, the coil receiving portion 1820, and the heat insulating portion 1830.
- the ventilation hole 1840 is formed at a place where a heat generation temperature is high and heat radiation is required.
- the vent holes 1840 are preferably formed in the substrate receiving portion 1810).
- the substrate receiving portion 1810 to have a high height, a plurality of vent holes may be formed in the substrate receiving portion 1810. That is, the ventilation holes 1840 may be formed in one or more of the coil receiving portion 1820 and the heat insulating portion 1830 of the substrate receiving portion 1810.
- vent hole 1840 may be formed in a flat shape having the same height as the side surface of the case 1800, Or may be formed in a shape that is recessed inward, and may be formed in various shapes according to the shape of the embodiment.
- At least one or each of the substrate receiving portion 1810, the coil receiving portion 1820, and the heat insulating portion 1830 may be provided with a wiring hole (not shown) so that the lead wiring can pass through.
- the present embodiment provides a wireless charging device case that can minimize heat generation and minimize thermal conduction by making the substrate accommodating and the coil accommodating independently, and forming the heat gap filled with the air gap or the heat insulating material.
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims (18)
- 송신 코일과, 상기 송신 코일에 출력 전력을 제공하는 구동부를 실장한 기판을 수용하는 수용부; 및상기 수용부의 상부에 배치되고, 무선전력 수신장치가 배치되는 배치면을 형성하는 단열부;를 포함하고,상기 수용부 및 상기 단열부는 통기홀을 포함하는 무선충전장치 케이스.
- 제1항에 있어서,상기 단열부는 단열층과 단열부재로 형성되는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열부재는 상기 단열층의 상부에 형성되는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열부재는 상기 단열부의 배치면에 형성되는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열부재는 단열물질을 포함하는 패드로 형성되는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열부재는 고무 패드로 형성되는 무선충정장치 케이스.
- 제2항에 있어서,상기 단열부재는 종이 패드로 형성되는 무선충전장치 케이스.
- 제7항에 있어서,상기 종이 패드는 상면 또는 하면에 굴곡부를 포함하는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열층은 에어갭 또는 단열물질로 충진되는 무선충전장치 케이스.
- 제2항에 있어서,상기 단열부재는 복수로 형성되는 무선충전장치 케이스.
- 하나 이상의 송신 코일을 수용하는 제1 수용부;상기 송신 코일에 제공되는 출력 전력을 제공하는 구동부를 실장한 기판을 수용하는 제2 수용부; 및상기 제2 수용부와 상기 제1 수용부 사이에 배치되는 제1 단열부;를 포함하고,상기 제2 수용부, 상기 제1 수용부 및 상기 단열부는 통기홀을 포함하는 무선충전장치 케이스.
- 제11항에 있어서,상기 단열부는 상기 제2 수용부의 높이보다 높게 형성되는 무선충전장치 케이스.
- 제11항에 있어서,상기 단열부는 상기 제2 수용부와 일체로 형성되는 무선충전장치 케이스.
- 제11항에 있어서,상기 제1 수용부의 상부에 배치되는 제2 단열부를 더 포함하는 무선충전장치 케이스.
- 제14항에 있어서,상기 제2 단열부는 상기 제1 단열부의 높이보다 낮게 형성되는 무선충전장치 케이스.
- 제11항에 있어서,상기 통기홀은 상기 제2 수용부, 제1 수용부, 단열부 중 적어도 하나에 복수로 형성되는 무선충전장치 케이스.
- 제11항에 있어서,상기 제2 수용부, 상기 제1 수용부, 상기 단열부는 배선홀을 포함하는 무선충전장치 케이스.
- 제11항에 있어서,상기 제2 수용부, 상기 제1 수용부 및 상기 제1 단열부는 각각 독립적으로 형성되어 적층되는 구조를 가지는 무선충전장치 케이스.
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KR1020170099380A KR20190015777A (ko) | 2017-08-07 | 2017-08-07 | 무선충전장치 케이스 |
KR10-2017-0099380 | 2017-08-07 | ||
KR10-2017-0101494 | 2017-08-10 | ||
KR1020170101494A KR20190017145A (ko) | 2017-08-10 | 2017-08-10 | 무선충전장치 케이스 |
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KR20140077801A (ko) * | 2012-12-14 | 2014-06-24 | 엘지이노텍 주식회사 | 무선전력 송신장치 |
KR20150123113A (ko) * | 2014-04-24 | 2015-11-03 | 엘지이노텍 주식회사 | 무선 전력 송신 장치 |
KR20160057247A (ko) * | 2014-11-13 | 2016-05-23 | 엘지이노텍 주식회사 | 무선 충전을 위한 무선 전력 송신 장치 |
JP2016103645A (ja) * | 2010-09-21 | 2016-06-02 | パナソニックIpマネジメント株式会社 | 非接触給電装置 |
KR101757204B1 (ko) * | 2016-03-23 | 2017-07-26 | 에스엘 주식회사 | 차량용 무선 충전 장치 |
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JP2016103645A (ja) * | 2010-09-21 | 2016-06-02 | パナソニックIpマネジメント株式会社 | 非接触給電装置 |
KR20140077801A (ko) * | 2012-12-14 | 2014-06-24 | 엘지이노텍 주식회사 | 무선전력 송신장치 |
KR20150123113A (ko) * | 2014-04-24 | 2015-11-03 | 엘지이노텍 주식회사 | 무선 전력 송신 장치 |
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KR101757204B1 (ko) * | 2016-03-23 | 2017-07-26 | 에스엘 주식회사 | 차량용 무선 충전 장치 |
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