KR20190017625A - Wireless charger having wireless communication coil - Google Patents

Abstract

The present invention relates to a wireless charging device having a wireless communication coil. According to an embodiment of the present invention, the wireless charging device having a wireless communication coil comprises: a first substrate arranged on the wireless communication coil; a wireless charging coil module including one or more wireless charging coils arranged on a lower part of the first substrate; a shielding material arranged on a lower part of the wireless charging coil module; a first bracket arranged on a lower part of the shielding material and having a first supporting unit and a second supporting unit which support the first substrate; a second substrate arranged on a lower part of the first bracket and having an electronic component; and a second bracket having the first supporting unit and the second supporting unit which support the second substrate and including one or more shielding units corresponding to the electronic component.

Description

[0001] WIRELESS CHARGER HAVING WIRELESS COMMUNICATION COIL WITH WIRELESS COMMUNICATION COIL [0002]

The present invention relates to a wireless charging device with a wireless communication coil.

Portable terminals, such as mobile phones and laptops, include a battery for storing power and a circuit for charging and discharging the battery. In order for the battery of such a terminal to be charged, power must be supplied from an external charger.

2. Description of the Related Art [0002] Generally, as an example of an electrical connection between a charging device and a battery for charging electric power of a battery, a commercial electric power is supplied to a terminal for converting electric power into voltage and current corresponding to the battery, Supply method. This type of terminal supply is accompanied by the use of physical cables or wires. Therefore, when handling a lot of terminal-supplied equipment, many cables occupy considerable work space, are difficult to organize, and are not well apparent. Also, the terminal supply method may cause problems such as instantaneous discharge due to different potential difference between terminals, burnout due to foreign substances, fire, natural discharge, battery life and deterioration of performance.

In order to solve such a problem, a charging system (hereinafter referred to as a "wireless charging system") and a control method using a method of transmitting power wirelessly are proposed. In addition, 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.

Generally, 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.

In addition, due to the development of mobile communication and information processing technologies, portable terminals provide various wireless Internet services such as content services as well as video telephony. Such a portable terminal uses NFC (Near Field Communication) technology to provide the above-mentioned service. NFC technology is a non-contact, short range wireless communication using the frequency band of 13.56 MHz, which means a communication technology that transmits data bidirectionally between terminals within a distance of 10 cm.

In addition, in recent portable terminals, a wireless charging device having a wireless charging function is simultaneously provided to a wireless communication coil in order to increase user convenience.

It is an object of the present invention to provide a wireless charging device having a wireless communication coil.

The present invention also provides a wireless charging device having a wireless communication coil capable of wireless communication and wireless charging.

The present invention also provides a wireless charging device having a miniaturized wireless communication coil.

It is another object of the present invention to provide a wireless charging device having a wireless communication coil with excellent heat radiation effect.

The present invention also provides a wireless charging device having a wireless communication coil having a plurality of brackets for efficient thermal diffusion.

The present invention also provides a wireless charging device having a wireless communication coil with excellent EMI shielding.

The present invention also provides a wireless charging device having a wireless communication coil capable of preventing damage to electronic components from EMI.

It is another object of the present invention to provide a wireless charging device having a simple wireless communication coil.

The present invention also provides a wireless charging device having a wireless communication coil with a simplified manufacturing process.

Further, the present invention provides a wireless charging device having a wireless communication coil with a small manufacturing cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

According to an aspect of the present invention, there is provided a wireless charging apparatus including: a first substrate on which a wireless communication coil is disposed; A wireless charging coil module including at least one wireless charging coil disposed under the first substrate; A shielding material disposed at a lower portion of the wireless charging coil module; A first bracket disposed at a lower portion of the shield member and having a first support portion and a second support portion for supporting the first substrate; A second substrate disposed below the first bracket and having an electronic component; And a second bracket having a first support portion supporting the second substrate and a second support portion and including at least one shield portion corresponding to the electronic component.

Further, in the wireless charging apparatus according to the embodiment, the shielding portion of the second bracket includes a first surface and a second surface, and the first surface extends from the bottom surface of the second bracket to the outside of the second bracket And the second surface may be bent so that the first surface is vertically bent upward from one end.

In the wireless charging apparatus according to the embodiment, the first bracket includes at least one fixing portion, the second board includes at least one fixing hole, and the at least one fixing portion corresponds to each of the at least one fixing hole And may be inserted and fixed in the at least one fixing hole.

According to another aspect of the present invention, there is provided a wireless charging apparatus, wherein the fixing portion includes a support protrusion and a ring portion, the support protrusion extends from the bottom surface of the first bracket downwardly to separate the first bracket from the second substrate, Wherein the hook portion includes an extension extending downward from the support protrusion and a shielding portion extending from one end of the extension portion, the extension portion of the hooking portion passing through the fixing hole, and the shielding portion of the hooking portion of the second substrate As shown in FIG.

Further, in the wireless charging device according to the embodiment, the shielding portion of the ring portion may be disposed corresponding to the electronic component of the second substrate.

In the wireless charging apparatus according to the embodiment, the first support portion of the first bracket and the first support portion of the second bracket form first and second ground portions, and the second support portion of the first bracket and the second support portion of the second bracket And the second support portion of the second bracket may form the third and fourth grounding portions.

Further, in the wireless charging apparatus according to the embodiment, the first grounding portion is grounded by one side of the first supporting portion of the first bracket and one side of the first supporting portion of the second bracket by the first fastening member, The other end of the first support portion of the first bracket and the other end of the first support portion of the second bracket are grounded by the second fastening member and the third grounding portion is grounded on one side of the second support portion of the first bracket, Wherein one side of the second support portion of the second bracket is grounded by the third fastening member and the other side of the second support portion of the first bracket and the other side of the second support portion of the second bracket are grounded by the second fastening member, It can be grounded by a member.

The wireless charging apparatus according to the embodiment may further include a bottom cover for accommodating the second bracket, the second bracket includes at least one receiving portion, and the bottom cover includes at least one receiving portion And one or more inner supports that support and ground each.

A wireless charging apparatus according to an embodiment includes: a first substrate on which a wireless communication coil is disposed; A wireless charging coil module including at least one wireless charging coil disposed under the first substrate; A shielding material disposed at a lower portion of the wireless charging coil module; A first bracket disposed at a lower portion of the shield member and having a first support portion and a second support portion for supporting the first substrate; A second substrate disposed below the first bracket and having an electronic component; And a second bracket having a first support portion and a second support portion for supporting the second substrate, wherein the first bracket is inserted corresponding to at least one fixing hole of the second substrate, And may include one or more fastening portions having portions.

According to another aspect of the present invention, there is provided a wireless charging apparatus, wherein the fixing portion includes a support protrusion and a ring portion, the support protrusion extends from the bottom surface of the first bracket downwardly to separate the first bracket from the second substrate, Wherein the hook portion includes an extension extending downward from the support protrusion and a shielding portion extending from one end of the extension portion, the extension portion of the hooking portion passing through the fixing hole, and the shielding portion of the hooking portion of the second substrate As shown in FIG.

Further, in the wireless charging device according to the embodiment, the shielding portion of the ring portion may be disposed corresponding to the electronic component of the second substrate.

A wireless charging apparatus according to an embodiment includes: a first substrate on which a wireless communication coil is disposed; A wireless charging coil module including at least one wireless charging coil disposed under the first substrate; A shielding material disposed at a lower portion of the wireless charging coil module; A first bracket disposed at a lower portion of the shield member and having a first support portion and a second support portion for supporting the first substrate; A second substrate disposed below the first bracket and having an electronic component; And a second bracket having a first support portion supporting the second substrate and a second support portion, wherein the first support portion of the first bracket and the first support portion of the second bracket are connected to the first and second grounding portions, And the second support portion of the first bracket and the second support portion of the second bracket may form the third and fourth ground portions.

Further, in the wireless charging apparatus according to the embodiment, the first grounding portion is grounded by one side of the first supporting portion of the first bracket and one side of the first supporting portion of the second bracket by the first fastening member, The other end of the first support portion of the first bracket and the other end of the first support portion of the second bracket are grounded by the second fastening member and the third grounding portion is grounded on one side of the second support portion of the first bracket, Wherein one side of the second support portion of the second bracket is grounded by the third fastening member and the other side of the second support portion of the first bracket and the other side of the second support portion of the second bracket are grounded by the second fastening member, It can be grounded by a member.

Effects of the wireless charging device having the wireless communication coil according to the present invention will be described as follows.

The present invention provides a wireless charging device having a wireless communication coil.

The present invention also provides a wireless charging device having a miniaturized wireless communication coil.

It is another object of the present invention to provide a wireless charging device having a wireless communication coil with excellent heat radiation effect.

The present invention also provides a wireless charging device having a wireless communication coil having a plurality of brackets for efficient thermal diffusion.

The present invention also provides a wireless charging device having a wireless communication coil with excellent EMI shielding.

The present invention also provides a wireless charging device having a wireless communication coil capable of preventing damage to electronic components from EMI.

It is another object of the present invention to provide a wireless charging device having a simple wireless communication coil.

The present invention also provides a wireless charging device having a wireless communication coil with a simplified manufacturing process.

Further, the present invention provides a wireless charging device having a wireless communication coil with a small manufacturing cost.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. It is to be understood, however, that the technical features of the present invention are not limited to the specific drawings, and the features disclosed in the drawings may be combined with each other to constitute a new embodiment.
1 is a block diagram for explaining a wireless charging system according to an embodiment.
2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment of the present invention.
3 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.
4 is a perspective view of a wireless charging device according to one embodiment.
5 is an exploded perspective view of a wireless charging device according to one embodiment.
6 is a first side view of a wireless charging device according to one embodiment.
7 is a second side view of a wireless charging device according to one embodiment.
8 is a perspective view of a wireless charging device according to another embodiment.
9 is a third side view of a wireless charging device according to another embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and various methods to which the embodiments are applied will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The present invention is not necessarily limited to these embodiments, as long as all of the constituent elements of the embodiment are described as being combined or operated together. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a computer-readable storage medium, readable and executed by a computer, thereby realizing embodiments. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

In the description of the embodiment, in the case of being described as being formed on the "upper or lower", "before" or "after" of each component, (Lower) "and" front or rear "encompass both that the two components are in direct contact with each other or that one or more other components are disposed between the two components.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

In describing the components of the present invention, 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 do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

In the description of the embodiments, 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. For the sake of convenience, 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 according to the embodiment 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.

As an example, 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 mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a navigation device, an MP3 player, (Hereinafter referred to as a " device ") capable of charging a battery by mounting a wireless power receiving means according to an embodiment, but not limited thereto, may be used for a small electronic device such as a toothbrush, an electronic tag, a lighting device, Quot;), and the term terminal or device may be used in combination. A wireless power receiver according to another embodiment may also be mounted on a vehicle, an unmanned aerial vehicle, an air drone or the like.

A wireless power receiver according to an embodiment 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. Here, 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. Particularly, 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) . In addition, 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.

Generally, 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. Here, 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. For example, 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. At this time, the wireless power transmitter can calculate the charging efficiency or the power transmission efficiency based on the received power intensity information.

1 is a block diagram for explaining a wireless charging system according to an embodiment.

Referring to FIG. 1, 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 >

For example, the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 can perform in-band communication in which information is exchanged using the same frequency band as that used for wireless power transmission. In another example, the wireless power transmitting terminal 10 and the wireless power receiving terminal 20 perform out-of-band communication in which information is exchanged using a different frequency band different from the operating frequency used for wireless power transmission .

For example, 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. Here, 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.

 For example, 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 >

In the half duplex communication mode, 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 according to the embodiment may acquire various status information of the electronic device 30. [ For example, 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.

2 is a block diagram illustrating a structure of a wireless power transmitter according to an embodiment of the present invention.

2, the wireless power transmitter 200 includes a power conversion unit 210, a power transmission unit 220, a wireless charging communication unit 230, a control unit 240, a current sensor 250, a temperature sensor 260 A storage unit 270, a fan 280, a timer 290, a short range communication unit 201, and a wireless communication coil 202. It should be noted that the configuration of the wireless power transmitter 200 described above is not necessarily an essential configuration, and may be configured to include more or less components.

As shown in Fig. 2, the power supply unit 100 may provide power supply. The power supply unit 100 may correspond to a battery built in the wireless power transmitter 200 and may be an external power supply. The embodiment is not limited to the form of the power supply unit 100.

When power is supplied from the power supply unit 100, the power conversion unit 210 may convert the power to a predetermined intensity.

For this, the power converter 210 may include a DC / DC converter 211 and an amplifier 212.

The DC / DC converting unit 211 may convert the DC power supplied from the power supply unit 100 into a DC power having a specific intensity according to a control signal of the controller 240.

The amplifier 212 can adjust the intensity of the DC / DC-converted power according to the control signal of the controller 240. For example, the control unit 240 may receive the power reception status information and / or the power control signal of the wireless power receiver through the wireless charging communication unit 230 and may receive the received power reception status information and / The amplification factor of the amplifier 212 can be dynamically adjusted based on the amplification factor. For example, the power reception status information may include, but is not limited to, the intensity information of the rectifier output voltage, the intensity information of the current applied to the reception coil, and the like. The power control signal may include a signal for requesting power increase, a signal for requesting power reduction, and the like.

The current sensor 250 can measure an input current input to the driving unit 221. The current sensor 250 may provide the measured input current value to the control unit 240. [ For example, the control unit 240 may adaptively cut off the power supply from the power supply unit 100 or block the supply of power to the amplifier 212 based on the input current value measured by the current sensor 250 have.

The temperature sensor 260 may measure the internal temperature of the wireless power transmitter 200 and provide the measurement result to the control unit 240. More specifically, the temperature sensor 260 may include one or more temperature sensors. One or more temperature sensors may be arranged corresponding to the transmission coil 223 of the power transmission unit 220 to measure the temperature of the transmission coil 223. [ For example, the control unit 240 may adaptively cut off the power supply from the power supply unit 100 or block the power supply to the amplifier 212 based on the temperature value measured by the temperature sensor 260 . To this end, a power cutoff circuit may be further provided at one side of the power conversion unit 210 to cut off the power supplied from the power supply unit 100 or cut off power supplied to the amplifier 212. In another example, the control unit 240 may adjust the intensity of the power supplied to the power transfer unit 220 based on the temperature value measured by the temperature sensor 260. Thus, the wireless power transmitter according to the embodiment can prevent the internal circuit from being damaged due to overheating.

The power transmitting unit 220 transmits the power signal output from the power converting unit 210 to the wireless power receiver. To this end, 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. At this time, 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. Here, 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. More specifically, the selection unit 222 may include a switch (not shown) for connecting LC resonance circuits corresponding to the plurality of transmission coils 223. The selection unit 222 may be omitted from the power transmission unit 220 when the transmission coil 223 is configured as one transmission coil.

The transmitting coil 223 may include at least one transmitting coil and may transmit the AC power signal received from the selecting unit 222 to the receiver through the corresponding transmitting coil. When there are a plurality of transmission coils, the transmission coil 223 may include first to n-th transmission coils. In order to select the 'corresponding transmission coil' among the plurality of transmission coils, the selection unit 222 may be implemented by a switch as shown in FIG. 4, or may be implemented by a far-away (not shown). In addition, the transmission coil 223 may include one capacitor (not shown) connected in series with the plurality of transmission coils to implement the LC resonance circuit. One end of the capacitor (not shown) may be connected to the transmission coil 223 and the other end may be connected to the driving unit 221. Here, 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. According to an exemplary embodiment, the controller 240 may determine a transmission coil to be used for wireless power transmission among a plurality of transmission coils provided based on a signal strength indicator received in response to a digital ping signal transmitted for each transmission coil You can choose dynamically.

The control unit 240 may control the selector 222 or the multiplexer (not shown) so that the detection signals may be sequentially transmitted through the first to n-th transmission coils 223 during the first detection signal transmission procedure have. At this time, the control unit 240 can identify the time at which the sensing signal is transmitted using the timer 290. When the sensing signal transmission time comes, the controller 240 controls the selector 222 or the multiplexer So that the detection signal can be transmitted through the transmission coil. For example, the timer 290 can send a specific event signal to the control unit 240 at predetermined intervals during the ping transmission step. When the event signal is detected, the control unit 240 selects the event signal from the selection unit 222 or the multiplexer So that the digital ping can be transmitted through the corresponding transmission coil.

The modulation unit 231 may modulate the control signal generated by the control unit 240 and transmit the modulated control signal to the driving unit 221. [ Here, 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. Here, 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.

 In one example, 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.

In addition, 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. In another example, the wireless power transmitter 200 may further include a separate coil corresponding to each of the transmission coils 223 (i.e., first through n-th transmission coils) It should be noted that it may also perform in-band communication with the receiver.

The storage unit 270 stores the input current value of the wireless power transmitter according to the charging status of the wireless power receiver, the charging power intensity, the charging stoppage, the temperature of the wireless power transmitter for charging restart, Operation status, fan RPM, and the like.

The fan 280 may be rotated by the motor to cool the superheated wireless power transmitter 200. The fan 280 may be arranged in correspondence with a configuration in which the degree of overheating is severe. For example, the fan 280 may be disposed corresponding to the power transmitting unit 220. More specifically, the fan 280 may be disposed corresponding to the transmission coil 223 of the power transmission unit 220. The controller 240 can operate the fan 280 according to the state of charge of the wireless power receiver.

The short-range communication unit 201 may perform short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission. For example, the short-range bidirectional communication may be an NFC (Near Field Communication) method. NFC is one of Radio Frequency IDentification (RFID) technologies and it is a wireless communication technology that transmits various wireless data within a distance of 10cm or less using a frequency of 13.56MHz.

The wireless communication coil 280 may transmit and receive signals for use in short-distance bidirectional communication with a wireless power receiver.

3 is a block diagram illustrating a structure of a wireless power receiver interworking with the wireless power transmitter of FIG.

3, the wireless power receiver 300 includes a wireless charging coil module 310, a rectifier 320, a DC / DC converter 330, a load 340, a sensing unit 350, A wireless charging communication unit 360, a main control unit 370, a short range communication unit 380, and a wireless communication coil 390. Here, the wireless charging communication unit 360 may include at least one of a demodulation unit 361 and a modulation unit 362.

In addition, the wireless power receiver 300 may include a short range communication unit 380. The short-range communication unit 380 can perform short-range bidirectional communication through a frequency band different from the frequency band used for wireless power signal transmission. For example, the short-range bidirectional communication may be an NFC (Near Field Communication) method. NFC is one of Radio Frequency IDentification (RFID) technologies and it is a wireless communication technology that transmits various wireless data within a distance of 10cm or less using a frequency of 13.56MHz.

In addition, the wireless power receiver 300 may include a wireless communication coil 290 that transmits and receives signals for use in short-distance bidirectional communication with a wireless power transmitter.

The AC power received through the wireless charging coil module 310 may be transmitted to the rectifier 320. The rectifier 320 may convert the AC power to DC power and transmit it to the DC / DC converter 330. The DC / DC converter 330 may convert the intensity of the rectifier output DC power to a specific intensity required by the load 340 and then deliver it to the load 340. Also, the wireless charging coil module 310 may include a plurality of reception coils (not shown), that is, first to n-th reception coils. The frequency of the AC power transmitted to each of the reception coils (not shown) according to an embodiment may be different from each other, and another embodiment may include a predetermined frequency controller having a function of adjusting LC resonance characteristics for different reception coils The resonance frequencies of the respective reception coils can be set differently.

The sensing unit 350 may measure the intensity of the DC power output from the rectifier 320 and may provide the measured DC power to the main control unit 370. Also, the sensing unit 350 may measure the intensity of the current applied to the receiving coil 310 according to the wireless power reception, and may transmit the measurement result to the main control unit 370. For example, the main controller 370 may compare the measured rectifier output DC power with a predetermined reference value to determine whether an overvoltage is generated. As a result of the determination, if an overvoltage occurs, a predetermined packet indicating that an overvoltage has occurred can be generated and transmitted to the modulator 362. Here, the signal modulated by the modulating unit 362 may be transmitted to the wireless power transmitter through the receiving coil 310 or a separate coil (not shown). The main control unit 370 may determine that the sensing signal is received when the intensity of the rectifier output DC power is equal to or greater than a predetermined reference value. When receiving the sensing signal, the signal intensity indicator corresponding to the sensing signal is received by the modulating unit 362 To be transmitted to the wireless power transmitter. The demodulation unit 361 demodulates the AC power signal between the reception coil 310 and the rectifier 320 or the DC power signal output from the rectifier 320 to identify whether or not the detection signal is received, (370). 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. [ Also, the sensing unit 350 may measure the internal temperature of the wireless power receiver 300 and provide the measured temperature value to the main control unit 370. More specifically, the sensing unit 350 may include one or more temperature sensors. One or more temperature sensors may measure the temperature of the receiving coil of the charging coil module 310. For example, the main control unit 370 may determine whether overheating occurs by comparing the measured internal temperature with a predetermined reference value. As a result of the determination, if overheating occurs, a predetermined packet indicating that overheating has occurred can be generated and transmitted to the modulating unit 362. [ Here, the signal modulated by the modulating unit 362 may be transmitted to the wireless power transmitter through the receiving coil 310 or a separate coil (not shown).

FIG. 4 is a perspective view of a wireless charging apparatus according to an embodiment, FIG. 5 is an exploded perspective view of a wireless charging apparatus according to an embodiment, FIG. 6 is a first side view of a wireless charging apparatus according to an embodiment, Is a second side view of a wireless charging device according to one embodiment.

Referring to FIGS. 4 and 5, a wireless charging apparatus according to an embodiment may include a first substrate 400. The first substrate 400 may be disposed on a wireless charging coil. Further, the first substrate 400 can be rigid. The rigid first substrate 400 can support the wireless communication coil 500 disposed on the upper surface. The wireless communication coil 500 may be pattern printed on the first substrate 400. The first substrate 400 may include a first support portion 410 disposed on one side and a second support portion 420 disposed on the other side. The first support portion 410 of the first substrate 400 may be supported on the first surface 810a of the first support portion 810 of the first bracket 800. [ The second support portion 410 of the first substrate 400 may be supported on the second surface 820a of the second support portion 820 of the first bracket 800. [ The first support part 410 of the first substrate 400 may be fixed to the first support part 810 of the first bracket 800. The second support portion 420 of the first substrate 400 may be fixed to the second support portion 820 of the first bracket 800. More specifically, the first support portion 410 of the first substrate 400 may include first to second holes h1 to h2. The first surface 810a of the first support portion 810 of the first bracket 800 may include a fifth hole h5 and a first fixing groove 811. [ 6 and 7, the first support part 410 of the first substrate 400 is inserted into the first hole h2 and the fifth hole h5, And may be fixed to the first surface 810a of the first support portion 810 of the bracket 800. The first supporting portion 410 of the first substrate 400 is inserted into the first hole h1 through the first fixing groove 811 and inserted into the first supporting portion 810 of the first bracket 800, And can be fixed to each other with the second side 810a. The second support portion 420 of the first substrate 400 may include third to fourth holes h3 to h4. The first surface 820a of the second support portion 820 of the first bracket 800 may include a ninth hole h9 and a second fixing groove 821. [ 6 and 7, the second support portion 420 of the first substrate 400 is inserted into the third hole h3 and the ninth hole h9, And may be fixed to the first surface 820a of the second support portion of the bracket 800. The second support portion 420 of the first substrate 400 is inserted into the fourth hole h4 through the second fixing groove 821 so that the first support portion 820 of the first bracket 800, (Not shown). In addition, the first substrate 400 may include terminal portions (not shown) on the lower surface thereof. The terminal portion (not shown) may include at least one connection pattern, at least one outer pad, and at least one via hole. The first substrate 400 may include a first connector 430. The first connector 430 may be disposed on one side of the first substrate 400. More specifically, the first connector 430 may be disposed corresponding to the first support portion 410 of the first substrate 400. The first connector 430 may include one or more first connection pins P. [ The wireless communication coil 500 disposed on the upper surface of the first substrate 400 is electrically connected to one or more first connection pins P of the first connector 430 through one or more via holes, . In addition, the first connector 430 may include a pin support PS. The pin support PS can fix and support one or more first connection pins P. [ 6, the pin support PS is fixed to the lower side of the first support part 410 of the first substrate 400, and at least one first connection pin P is inserted into the pin support PS . The area of the first substrate 400 may be larger than that of the wireless communication coil 500 disposed at the upper portion, the wireless charging coil modules 610 through 630 disposed at the lower portion, and the shielding material 700.

The wireless charging device according to one embodiment may include a wireless communication coil 500. The wireless communication coil 500 may be disposed on the upper surface of the substrate 400. The wireless communication coil 500 may be a wireless communication coil pattern disposed. More specifically, the wireless communication coil 500 may include a wireless communication coil pattern disposed on the top surface of the substrate 400 and a wireless communication coil connection pattern disposed on the bottom surface of the substrate 400. That is, the wireless communication coil pattern and the wireless communication coil connection pattern may be connected together to form the wireless communication coil 500. That is, the wireless communication coil 500 may be arranged to be turned one or more times from one end to the other end by electrically connecting the wireless communication coil pattern and the wireless communication coil connection pattern.

The wireless charging device according to one embodiment may include a wireless charging coil module. The wireless charging coil module may be disposed below the first substrate 400. The wireless charging coil module may include one or more wireless charging coils. The one or more wireless charging coils may be one or more transmit coils of the wireless power transmitter or one or more receive coils of the wireless power receiver. Further, for example, when there are a plurality of wireless charging coils, each wireless charging coil may be wound with the same number of turns. But may be wound in different numbers of turns. Further, the plurality of wireless charging coils may have the same inductance. The present invention is not limited thereto and different inductances may be provided. Further, the plurality of wireless charging coils may be arranged in one or more layers. More specifically, the plurality of wireless charging coils may include first to third wireless charging coils 610 to 630. The second wireless charging coil 620 and the third wireless charging coil 630 may be disposed in a first layer disposed in the same layer. The first wireless charging coil 610 may be disposed above the second wireless charging coil 620 and the third wireless charging coil 630. Accordingly, a plurality of wireless charging coils can be disposed in different layers to expand the charging area so that wireless power can be efficiently transmitted.

In addition, the wireless charging device according to one embodiment may include the shielding material 700. The shielding material 700 may be disposed on the underside of the wireless charging coil module. For example, when there are a plurality of wireless charging coils, the shielding material 700 may be disposed on the lower surface of the second wireless charging coil 620 and the third wireless charging coil 630. An adhesive or an adhesive material (not shown) is disposed between the upper surface of the shielding material 700 and the lower surface of the second wireless charging coil 620 and the lower surface of the third wireless charging coil 630 to form a shielding material (not shown) The wireless charging coils 620 and 630 can be fixed. The shield member 700 may be disposed on the upper surface of the first bracket 800. The shielding member 700 can guide the wireless power generated in the wireless charging coil module disposed at the upper portion in the charging direction and protect various circuits disposed at the lower portion from the electromagnetic field.

In addition, the wireless charging apparatus according to an embodiment may include a first bracket 800. The first bracket 800 may be disposed on the lower surface of the shield material 700. The first bracket 800 may be made of a conductive material. Also, the first bracket 800 may be made of a material having a high thermal conductivity. Accordingly, the first bracket 800 can transmit heat generated in the wireless charging coil module. The first bracket 800 may include a first support portion 810 on one side and a second support portion 820 on the other side. The first support portion 810 of the first bracket 800 may include first to sixth surfaces 810a through 810f. The sixth surface 810f of the first support portion 810 may be bent upwardly from one side of the first bracket 800 and vertically upward. The first surface 810a of the first support portion 810 may be bent and vertically bent from the sixth surface 810f of the first support portion 810. [ The first surface 810a of the first support portion 810 may include a fifth hole h5, a first fixing groove 811, and a first connector hole 812. [ The first connector hole 812 may be disposed through the first connection pin P of the first connector 430 of the first substrate 400. [ The first surface 810a of the first support portion 810 may be fixed to the first support portion 410 of the first substrate 400 through the fifth hole h5 have. The first surface 810a of the first support part 810 is inserted into the first hole h1 of the first support part 410 of the first substrate 400 so that the first fixing part The first support 410 may be fixed to the first support 410 of the first support 400. The second surface 810b of the first support portion 810 may be bent downward from one side of the first surface 810a to extend vertically downward. The third surface 810c of the first support portion 810 may be bent and vertically bent from the second surface 810b of the first support portion 810. [ The third surface 810c of the first support portion 810 may include a sixth hole h6. The sixth hole h6 may be used to fix the first bracket 800, the third substrate 1000, and the second bracket 1100. [ The sixth hole h6 may be used to ground the first bracket 800 to the second bracket 1100. [ 4, 6, and 7, the third surface 810c of the first support portion 810 is divided into a sixth hole h6, a twelfth hole h12 of the third substrate 1000, The 18th hole h18 of the second bracket 1100 may be fixed to the third substrate 1000 and the second bracket 1100 through the second-1 fastening member 1321. [ The third surface 810c of the first support portion 810 may be grounded with the second bracket 1100 through the second-1 coupling member 1321. [ That is, it is possible to form the first grounding part (a) by which the first bracket 800 and the second bracket 1100 are grounded by the 2-1 coupling member 1321. [ Accordingly, the wireless charging apparatus according to one embodiment can efficiently transmit the heat absorbed by the first charging unit 300 to the second charging unit 300 through the first grounding unit (a). The first bracket 800 may be formed such that the fourth surface 810d of the first support portion 810 is bent downward from the other side of the first surface 810a. The fifth surface 810e of the first support portion 810 may be bent and vertically bent from the fourth surface 810d of the first support portion 810. [ The fifth surface 810e of the first support portion 810 may include a seventh hole h7 or an eighth hole h8. The eighth hole h8 may be used to fix the first bracket 800, the third substrate 1000, and the second bracket 1100. [ The eighth hole h8 may be used to ground the first bracket 800 to the second bracket 1100. [ 4, 6, and 7, the fifth surface 810e of the first support portion 810 includes the eighth hole h8, the fourteenth hole h14 of the third substrate 1000, The 20th hole h20 of the second bracket 1100 may be fixed to the third substrate 1000 and the second bracket 1100 through the 2-2 coupling member 1322. [ The fifth surface 810e of the first support portion 810 may be grounded with the second bracket 1100 through the second-second fastening member 1322. [ That is, it is possible to form the second grounding part b where the first bracket 800 and the second bracket 1100 are grounded by the second-second coupling member 3122. Accordingly, the wireless charging apparatus according to one embodiment can efficiently transmit the heat absorbed by the first charging unit 300 to the second charging unit 300 through the second grounding unit (b). The second support portion 820 of the first bracket 800 may include first to sixth surfaces 820a through 820f. The sixth surface 820f of the second support portion 820 may be bent and bent upward from the other side of the first bracket 800. The first surface 820a of the second support portion 820 may be bent perpendicularly on the sixth surface 820f of the second support portion 820. [ The first surface 820a of the second support portion 820 may include a ninth hole h9 and a second fixing groove 821. [ The first surface 820a of the second support portion 820 may be fixed to the second support portion 420 of the first substrate 400 through the ninth hole h9 have. The first surface 820a of the second support portion 820 is inserted into the fourth hole h4 of the second support portion 420 of the first substrate 400, Can be fixed to the second support portion 420 of the second housing 400. The second surface 820b of the second support portion 820 may be bent downward from one side of the first surface 820a to extend vertically downward. The third surface 820c of the second support portion 820 may be bent and extended perpendicularly from the second surface 820b of the second support portion 820. [ The third surface 820c of the second support portion 820 may include a tenth hole h10 and an eleventh hole h11. The tenth hole h10 may be used to fix the first bracket 800, the third substrate 1000, and the second bracket 1100. [ The tenth hole h10 may be used to ground the first bracket 800 to the second bracket 1100. [ 4, 6, and 7, the third surface 820c of the second support portion 820 includes the tenth hole h10, the sixteenth hole h16 of the third substrate 1000, The second hole h22 of the second bracket 1100 may be fixed to the third substrate 1000 and the second bracket 1100 through the second and third fastening members 1323. The third surface 820c of the second support portion 820 may be grounded with the second bracket 1100 through the second to third fastening members 1323. [ That is, the third grounding part c, to which the first bracket 800 and the second bracket 1100 are grounded, can be formed by the second to third fastening members 1323. Accordingly, the wireless charging device according to one embodiment can efficiently transmit the heat absorbed by the first charging bracket coil to the second bracket 1100 through the third grounding portion (c). The fourth surface 820d of the second support portion 820 may be bent and bent downward from the other side of the first surface 820a. The fifth surface 820e of the second support portion 820 may be bent and vertically bent from the fourth surface 820d of the second support portion 820. [ The fifth surface 820e of the second support portion 820 may include a twelfth hole h12. The twelfth hole h12 may be used to fix the first bracket 800, the third substrate 1000, and the second bracket 1100. [ Also, the twelfth hole h12 may be used to ground the first bracket 800 to the second bracket 1100. [ 4, 6, and 7, the fifth surface 810e of the second support portion 820 includes the twelfth hole h12, the eighteenth hole h18 of the third substrate 1000, The twenty-fourth hole h24 of the second bracket 1100 may be fixed to the third substrate 1000 and the second bracket 1100 through the second-fourth fastening member 1324. [ The fifth surface 820e of the second support portion 820 may be grounded with the second bracket 1100 through the second 2-4 fastening member 1324. [ That is, it is possible to form the fourth grounding part d where the first bracket 800 and the second bracket 1100 are grounded by the second 2-4 fastening member 1324. Accordingly, the wireless charging apparatus according to one embodiment can efficiently transmit the heat absorbed by the first charging bracket coil to the second bracket 1100 through the fourth grounding portion (d). Further, the first bracket 800 may be provided with a second connector portion 860 between one side and the other side. A second connector 900 may be disposed on the second connector portion 860. The second connector portion 860 may have a shape corresponding to the second substrate 910 of the second connector 900. For example, the second connector portion 860 may be formed to have a space in which the second connector 900 can be installed. In addition, the first bracket 800 may include a plurality of fixing portions. The plurality of fixing portions may fix the first bracket 800 and the third substrate 1000. In addition, the plurality of fixing portions can shield EMI generated in the third substrate 1000. More specifically, the plurality of fixing portions may include first to third fixing portions 830 to 850. The first to third fixing parts 830 to 850 may be disposed corresponding to the electronic parts in which the EMI is generated in the configuration of the third substrate 1000. [ Therefore, the wireless charging apparatus can prevent the EMI generated inside from being emitted to the outside. The first fixing part 830 may be disposed between one side of the first supporting part 810 of the first bracket 800 and one side of the second supporting part 820. The first fixing portion 830 may include a support protrusion 831 and a ring portion 832. [ The support protrusion 831 of the first fixing part 830 can be bent and extended to the lower side of the first bracket 800. [ The supporting protrusion 831 of the first fixing part 830 allows the third substrate 1000 and the first bracket 800 to be spaced apart from each other. For example, the height of the support protrusion 831 may be 0.3 mm or more. Thus, an electronic component disposed on the upper surface of the third substrate 1000 can be disposed. The annular portion 832 of the first fixing portion 830 is coupled through the first fixing hole 1020 of the third substrate 1000 and has a shielding portion (832b). More specifically, the annular portion 832 of the first fixing portion 830 includes an extending portion 832a and a shielding portion 832b. The extension 832a may extend downward from the support protrusion 831 of the first fixing part 830. [ The shielding portion 832b may extend from one side of the extending portion 832a in the direction of the first supporting portion 810 to form a wall. The second fixing part 840 may be disposed adjacent to the other side of the first supporting part 810 of the first bracket 800. The second fixing portion 840 may include a support protrusion 841 and a ring portion 842. The support protrusion 841 of the second fixing part 840 can be bent and extended to the lower side of the first bracket 800. The support protrusion 841 of the second fixing part 840 allows the third substrate 1000 and the first bracket 800 to be spaced apart from each other. Thus, an electronic component disposed on the upper surface of the third substrate 1000 can be disposed. The ring portion 842 of the second fixing portion 840 is coupled through the second fixing hole 1030 of the third substrate 1000 and is connected to the shielding portion (842b). More specifically, the hook portion 842 of the second fixing portion 840 includes an extension portion (not shown) and a shielding portion 842b. The extension part (not shown) may extend downward from the support protrusion 841 of the second fixing part 840. The shielding portion 842b may extend from one side of the extended portion (not shown) and extend in the direction of the first supporting portion 810 to form a wall. The third fixing part 850 may be disposed adjacent to the other side of the second supporting part 820 of the first bracket 800. The third fixing part 850 may include a support protrusion 851 and a ring 852. The support protrusion 851 of the third fixing part 850 can be bent and extended to the lower side of the first bracket 800. [ The support protrusion 851 of the third fixing part 850 allows the third substrate 1000 and the first bracket 800 to be spaced apart from each other. Thus, an electronic component disposed on the upper surface of the third substrate 1000 can be disposed. The ring 852 of the third fixing part 850 is coupled to the third fixing hole 1040 of the third substrate 1000 and is connected to a shielding part (852b). More specifically, the annular portion 852 of the third fixing portion 850 includes an extension (not shown) and a shielding portion 852b. The extension (not shown) may extend downward from the support protrusion 851 of the third fixing part 850. The shielding portion 852b may extend from one side of the extension portion (not shown) to the second support portion 820 to form a wall.

The wireless charging device according to one embodiment may include a second connector 900. The second connector 900 may include a second substrate 910 and a second connection pin 920. The second substrate 920 is disposed at the lower end of the shield 700 and may be disposed on the same layer as the first bracket 800. The second substrate 910 may be rigid. The rigid substrate 910 may support the second connection pin 920 when the second connection pin 920 is connected to an external device. The second connection pin 920 may be plural. The second connection pins 920 may be arranged to pass through the second substrate 910, respectively. The second connection pin 920 may be electrically connected to the wireless charging coil of the wireless charging coil module. In addition, a temperature sensor (not shown) may be electrically connected to the second connection pin 920.

The wireless charging apparatus according to one embodiment may include a third substrate 1000. The third substrate 1000 may be disposed on the second bracket 1100. Electronic components (not shown) for wirelessly charging or wirelessly communicating on the upper and lower surfaces of the third substrate 1000 may be disposed. Further, the third substrate 1000 can be rigid. The rigid third substrate 1000 is bonded to the third surface 1110c and the fifth surface 1110e of the first support portion 1110 of the second bracket 1100 and the third surface 1120c of the second support portion 1120, And the fifth surface 1120e. The third substrate 1000 includes a third surface 1110c and a fifth surface 1110e of the first support portion 1110 of the second bracket 1100 and a third surface 1120c of the second support portion 1120, And the fifth surface 1120e. More specifically, the third substrate 1000 may include the 13th through 18th holes h13 through h18. The third substrate 1000 has the second-1 fastening member 1321 inserted into the thirteenth hole h13, the second-second fastening member 1322 inserted into the fifteenth hole h15, and the sixteenth hole h16 And the second 2-4 fastening member 1324 is inserted into the 18th hole h18 to be fixed to the first bracket 800 and the second bracket 1100 . Also, the third substrate 1000 may include first to third fixing holes 1020 to 1040. The first to third fixing holes 1020 to 1040 may have first to third fixing portions 830 to 850 inserted therein, respectively. In addition, the third substrate 1000 may include at least one first connection pinhole PH. The first connection pinhole PH may be disposed corresponding to the first connection pin P of the first connector 430. The at least one first connection pinhole PH may correspond to at least one of the first connection pins P, respectively.

In addition, the wireless charging apparatus according to an embodiment may include a second bracket 1100. [ The second bracket 1100 may be made of a conductive material. Further, the second bracket 1000 may be made of a material having a high thermal conductivity. The second bracket 1100 may include a first support portion 1110 on one side of the bottom surface 1100a and a second support portion 1120 on the other side of the bottom surface 1100a . The first support portion 1110 of the second bracket 1100 may include first to sixth surfaces 1110a to 1110e. The first surface 1110a of the first support portion 1110 may be one side of the bottom surface 1100a of the second bracket 1100. [ The second surface 1110b of the first support portion 1110 may be bent upward from the upper surface of the first surface 1110a of the first support portion 1110 to be vertically bent. The third surface 1110c of the first support portion 1110 may be bent and vertically bent from the second surface 1110b of the first support portion 1110. [ The third surface 1110c of the first support portion 1110 may include the nineteenth hole h19. The third surface 1110c of the first support portion 1110 is formed so that the second-first fastening member 1321 passes through the nineteenth hole h19 and is engaged with the third substrate 1000 and the first support portion of the first bracket 800 Can be fixed to the third side 810c of the second side 810. The third surface 1110c of the first support portion 1110 is grounded with the third surface 810c of the first support portion 810 of the first bracket 800 through the second-1 coupling member 1321 . The fourth surface 1110d of the first support portion 1110 may be bent and vertically bent upward from the other side of the first surface 1110a of the first support portion 1110. [ The fifth surface 1110e of the first support portion 1110 may be bent and vertically bent from the fourth surface 1110d of the first support portion 1110. [ The fifth surface 1110e of the first support portion 1110 may include a 20th hole and a 21th hole h20 to h21. The fifth surface 1110e of the first support portion 1110 is formed so that the second-second fastening member 1322 passes through the 21th hole h21 and is inserted into the third substrate 1000 and the first support portion And may be fixed to the fifth surface 810e of the base plate 810. The fifth surface 1110e of the first support portion 1110 is grounded with the fifth surface 810e of the first support portion 810 of the first bracket 800 through the second-second fastening member 1322 . Accordingly, in the wireless charging apparatus according to the embodiment, the second bracket 1100 can receive heat from the first bracket 800 and discharge heat to the outside. The second support portion 1120 of the second bracket 1100 may include first to sixth surfaces 1120a to 1120e. The first surface 1120a of the second support portion 1120 may be the other side of the bottom surface 1100a of the second bracket 1100. [ The first surface 1120a of the second support portion 1120 may include a fifth support portion 1150 of a recessed shape that is inserted into the bottom surface 1100a. The second surface 1120b of the second support portion 1120 may be bent upward at an upper side from one side of the first surface 1120a of the second support portion 1120. [ The third surface 1120c of the second support portion 1120 may be bent perpendicularly on the second surface 1120b of the second support portion 1120. [ The third surface 1120c of the second support portion 1120 may include a twenty-second hole h22 and a twenty-third hole h23. The third surface 1120c of the second support portion 1120 is formed so that the second to third fastening members 1323 penetrate through the twenty-second hole h22 and are engaged with the third substrate 1000 and the second support portion of the first bracket 800, Can be fixed with the third side 820c of the second side 820. The third surface 1120c of the second support portion 1120 is grounded with the third surface 820c of the second support portion 820 of the first bracket 800 through the second to third fastening members 1323 . Accordingly, in the wireless charging apparatus according to the embodiment, the second bracket 1100 can receive heat from the first bracket 800 and discharge heat to the outside. The fourth surface 1120d of the second support portion 1120 may be bent and vertically bent upward from the other side of the first surface 1120a of the second support portion 1120. [ The fifth surface 1120e of the second support portion 1120 may be bent and vertically bent from the fourth surface 1120d of the second support portion 1120. [ The fifth surface 1120e of the second support portion 1120 may include a 24th hole h24. The fifth surface 1120e of the second support portion 1120 is connected to the third substrate 1000 and the second support portion of the first bracket 800 through the 24th hole h24, And may be fixed to the fifth surface 820e of the base plate 820. The fifth surface 1120e of the second support portion 1120 is grounded with the fifth surface 820e of the second support portion 820 of the first bracket 800 through the second 2-4 fastening member 1324 . The second bracket 1100 may include a first shielding portion 1130 and a second shielding portion 1140. The first shielding part 1130 and the second shielding part 1140 may shield the EMI generated from the electronic parts disposed on the third substrate 1000 from being emitted to the outside. More specifically, the first shield 1130 may include a first side 1130a and a second side 1130b. The first surface 1130a of the first shielding portion 1130 is disposed between one side of the first surface 1110a of the first support portion 1110 and one side of the first surface 1120a of the second support portion 1120 Can be the bottom surface. The first surface 1130a of the first shielding portion 1130 is extended outward from the other side of the first surface 1110a of the first support portion 1110 and the first surface 1120a of the second support portion 1120 . The second surface 1130b of the first shielding portion 1130 may be bent and vertically bent from one side of the first surface 1130a of the first shielding portion 1130. [ The second surface 1130b of the first shielding portion 1130 may shield EMI generated in the electronic component (not shown) of the third substrate 1000. [ The height of the second surface 1130b of the first shielding portion 1130 may be lower than the lower side of the third substrate 1000 as shown in FIGS. The height of the second surface 1130b of the first shielding portion 1130 may be higher than the height of the third substrate 1000. The second shielding portion 1140 may include a first surface 1140a and a second surface 1140b. The first surface 1140a of the second shielding portion 1140 is disposed between the other side of the first surface 1110a of the first support portion 1110 and the other side of the first surface 1120a of the second support portion 1120 Can be the bottom surface. The first surface 1140a of the second shielding portion 1140 is extended outward from the other side of the first surface 1110a of the first support portion 1110 and the other side of the first surface 1120a of the second support portion 1120 . The second surface 1140b of the second shielding portion 1140 may be bent and vertically bent at one side of the first surface 1140a of the second shielding portion 1140. [ The second surface 1140b of the second shielding portion 1140 may shield EMI generated from the electronic component (not shown) of the third substrate 1000. [ The height of the second surface 1140b of the second shielding portion 1140 may be lower than the lower side of the third substrate 1000 as shown in FIGS. The height of the second surface 1140b of the second shielding portion 1140 may be higher than the height of the third substrate 1000. The widths of the first and second shielding portions 1130 and 1140 may be set to correspond to electronic components (not shown) disposed on the third substrate 1000. For example, as shown in FIG. 5, the width of the first shielding portion 1130 may be smaller than the width of the second shielding portion 1140. The width of the second shielding portion 1130 may be equal to or greater than the width of the second shielding portion 1140. The second bracket 1100 may include a receiving portion 1150. The receiving portion 1150 can contact the bottom cover when engaged with the bottom cover. More specifically, the receiving portion 1150 may include first to fifth receiving portions 1151 to 1155. The first support portion 1151 may be disposed between one side of the first shielding portion 1130 and one side of the first support portion 1110. The second support portion 1152 may be disposed between the other side of the first support portion 1110 and one side of the second shielding portion 1140. The third support portion 1153 may be disposed between the other side of the first shielding portion 1130 and one side of the second support portion 1120. The fourth receiving portion 1154 may be disposed between the other side of the second supporting portion 1120 and the other side of the second shielding portion 1140. The fifth stopper portion 1155 may be disposed on the first surface 1120a of the second support portion 1120. [ The first to fourth receiving portions 1151 to 1154 may have a shape protruding or extending from the bottom surface 1110a to the outside of the second bracket 1100. [ The fifth support portion 1155 may have a recessed shape that is inserted into the second bracket 1100.

Therefore, in one embodiment, the wireless communication coil and the wireless charging coil module can be integrated and miniaturized. In addition, one embodiment may be simple in structure, simplified in manufacturing process, and low in manufacturing cost. In addition, one embodiment efficiently diffuses the heat generated from the wireless charging coil module and has excellent heat radiation effect. In addition, one embodiment uses a plurality of EMI shields to provide excellent EMI shielding, and can prevent damage to electronic components from EMI.

FIG. 8 is a perspective view of a wireless charging apparatus according to another embodiment, and FIG. 9 is a third side view of a wireless charging apparatus according to another embodiment.

8 and 9 are the same as those of the wireless charging apparatus according to the embodiment of FIGS. 4 to 7 except for the bottom cover 1200. FIG. Hereinafter, a wireless charging apparatus according to an embodiment will be described except for the same configuration as the wireless charging apparatus.

8 and 9, a wireless charging apparatus according to another embodiment may include a bottom cover 1200. The bottom cover 1200 can house the second bracket 1100. Thus, the bottom cover 1200 can protect the second bracket 1100. The bottom cover 1200 may be a metal material having high heat conduction heat, high strength, corrosion resistance and light weight. As an example, the bottom cover 1200 may be steel or an alloy. In addition, the bottom cover 1200 may include an inner support 1210. The inner support portion 1210 can support the second bracket 1100 by contacting the second bracket 1100. In addition, the inner support portion 1210 may receive heat from the second bracket 1100 and may release heat to the outside. More specifically, the inner support portion 1210 may include first to fifth inner support portions 1211 to 1215. The first inner support portion 1211 may be disposed corresponding to the first support portion 1151 of the second bracket 1100. In addition, the first inner supporting portion 1211 may have a shape inward from the outer wall of the bottom cover 1200. The inner surface of the first inner supporting portion 1211 can contact the first receiving portion 1151 of the second bracket 1100. [ Accordingly, the first inner supporting portion 1211 can support the first receiving portion 1151 of the second bracket 1100 and receive heat. In addition, the first inner supporting portion 1211 may be grounded to the first receiving portion 1151 of the second bracket 1100. Thus, EMI generated in the wireless charging device can be emitted to the outside through the bottom cover 1200. [ The second inner support portion 1212 may be disposed corresponding to the second support portion 1152 of the second bracket 1100. In addition, the second inner supporting portion 1212 may have a shape that is inwardly protruded from the outer wall of the bottom cover 1200. [ The inner surface of the second inner supporting portion 1212 can contact the second receiving portion 1152 of the second bracket 1100. [ Accordingly, the second inner supporting portion 1212 can support the second receiving portion 1152 of the second bracket 1100 and can receive heat. In addition, the second inner supporting portion 1212 can be grounded to the second receiving portion 1152 of the second bracket 1100. Thus, EMI generated in the wireless charging device can be emitted to the outside through the bottom cover 1200. [ The third inner support portion 1213 may be disposed corresponding to the third support portion 1153 of the second bracket 1100. In addition, the third inner supporting portion 1213 may have a shape inwardly projecting from the outer wall of the bottom cover 1200. The inner surface of the third inner supporting portion 1213 can contact the third receiving portion 1153 of the second bracket 1100. [ The third inner supporting portion 1213 can support the third receiving portion 1153 of the second bracket 1100 and can receive the heat of the second bracket 1100. In addition, the third inner supporting portion 1213 can be grounded to the third receiving portion 1153 of the second bracket 1100. 9, the third inner supporting portion 1213 and the third receiving portion 1153 of the second bracket 1100 may form the fourth grounding portion A. [ Thus, EMI generated in the wireless charging device can be emitted to the outside through the bottom cover 1200. [ The fourth inner support portion 1214 may be disposed corresponding to the fourth support portion 1154 of the second bracket 1100. In addition, the fourth inner support portion 1214 may have a shape that is inwardly protruded from the outer wall of the bottom cover 1200. The inner surface of the fourth inner supporting portion 1214 can contact the fourth receiving portion 1154 of the second bracket 1100. [ The fourth inner supporting portion 1214 can support the fourth receiving portion 1154 of the second bracket 1100 and receive the heat of the second bracket 1100. In addition, the fourth inner supporting portion 1214 may be grounded to the fourth receiving portion 1154 of the second bracket 1100. 9, the fourth inner supporting portion 1214 and the fourth receiving portion 1154 of the second bracket 1100 may form the fifth grounding portion B. [ Thus, EMI generated in the wireless charging device can be emitted to the outside through the bottom cover 1200. [ The fifth inner support portion 1215 may be disposed corresponding to the fifth support portion 1155 of the second bracket 1100. In addition, the fifth inner supporting portion 1215 may be inwardly protruding from the outer wall of the bottom cover 1200. The inner surface of the fifth inner supporting portion 1215 can contact the fifth receiving portion 1155 of the second bracket 1100. [ The fifth inner supporting portion 1215 can support the fifth receiving portion 1155 of the second bracket 1100 and receive the heat of the second bracket 1100. In addition, the fifth inner supporting portion 1215 may be grounded to the fifth receiving portion 1155 of the second bracket 1100. That is, as shown in FIG. 9, the fifth inner supporting portion 1215 and the fifth receiving portion 1155 of the second bracket 1100 may form the fifth grounding portion C, as shown in FIG. Thus, EMI generated in the wireless charging device can be emitted to the outside through the bottom cover 1200. [ In addition, the bottom cover 1200 may include one or more heat dissipation holes. More specifically, the heat dissipating holes may include first to fifth heat dissipating holes 1221 to 1225. The first to fifth heat dissipating holes 1221 to 1225 may be disposed corresponding to the first to fifth inner supporting portions 1211 to 1215, respectively. For example, the first heat dissipating hole 1221 may be disposed beside the first inner supporting portion 1211. The second heat dissipating hole 1222 may be disposed beside the second inner support portion 1212. The third heat dissipating hole 1223 may be disposed beside the third inner supporting portion 1213. The fourth heat-dissipating hole 1224 may be disposed beside the fourth inner supporting portion 1214. The fifth heat dissipation hole 1225 may be disposed beside the fifth inner support portion 1215.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (15)

A first substrate;
A first bracket including a first support portion supporting the first substrate and a second support portion;
A plurality of wireless charging coils disposed between the first substrate and the first bracket;
A second substrate disposed under the first bracket and having at least one electronic component; And
And a second bracket including a first support portion supporting the second substrate and a second support portion,
And the second bracket includes a shield which overlaps with one side of the at least one electronic component. The method according to claim 1,
And the height of the shield is lower than that of the second substrate. The method according to claim 1,
Wherein the height of the shielding portion is higher than that of the second substrate. The method according to claim 1,
Wherein the shield comprises a first shield having a first width and a second shield having a second width. The method according to claim 1,
Wherein the shielding shields the EMI generated from the at least one electronic component from being discharged to the outside. The method according to claim 1,
Wherein the first bracket includes a fixing portion that overlaps with one side of the at least one electronic component. The method according to claim 6,
And the fixing portion penetrates the second substrate. 8. The method of claim 7,
And the second substrate includes a fixing hole through which the fixing portion passes. The method according to claim 6,
Wherein a plurality of the fixing portions are formed. The method according to claim 6,
Wherein the fixing unit shields EMI generated in the at least one electronic component from being emitted to the outside. The method according to claim 1,
And the first substrate includes a first connector connected to the second substrate. The method according to claim 1,
Wherein the first substrate includes a terminal portion on a lower surface thereof. The method according to claim 1,
And a second connector connecting the plurality of wireless charging coils to the second substrate. 13. The method of claim 12,
And the second connector includes a second connection pin passing through the second substrate. The method according to claim 1,
And a shielding member disposed between the plurality of wireless charging coils and the first bracket.

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