KR20150028131A - Supporter - Google Patents

Abstract

The present invention relates to a supporter. The supporter includes a first case, a second case, a printed circuit board, a transmission coil, and a heat sink. The printed circuit board is disposed on the second case and includes at least one opening unit. The transmission coil is disposed on the printed circuit board. The heat sink is disposed between the printed circuit board and the transmission coil and is in contact with at least a part of the second case.

Description

Cradle {SUPPORTER}

Embodiments relate to a mount capable of mounting and charging an object.

Recently, wireless power transmission (wireless power transmission) or wireless energy transfer (wireless energy transfer) for transferring electric energy to a desired device has been actively researched and developed.

A transmitter for transmitting wireless power and a receiver for receiving transmitted wireless power may be provided to utilize the wireless power transmission technology.

The transmitting end may be provided in a case (hereinafter referred to as a rack), and the receiving end may be provided in a wireless terminal. Therefore, the wireless power transmitted from the transmitting terminal of the cradle is received by the receiving terminal and the wireless terminal is charged.

For example, a portable terminal holder is disclosed in the Utility Model Registration No. 20-0451879, but such a holder is restricted to charging the portable terminal with a wire only.

The embodiment provides a stand capable of maximizing heat dissipation efficiency.

According to an embodiment, the holder comprises a first case; A second case coupled to the first case; A printed circuit board disposed on the second case and including at least one opening; A transmission coil disposed on the printed circuit board; And a heat sink disposed between the printed circuit board and the transmission coil. The heat sink is contacted with at least a part of the second case.

According to an embodiment, the wireless terminal receives wireless power from the transmit coil of the cradle.

According to the embodiment, the following effects are obtained.

First, the heat sink disposed under the transmission coil penetrates the printed circuit board and contacts the heat radiating plate, so that the heat generated in the transmission coil can be quickly discharged to the outside via the heat sink and the heat radiating plate to improve the emission efficiency .

Secondly, the heat sink disposed under the transmission coil is brought into contact with the printed circuit board, and the electronic element mounted on the printed circuit board is attached to the case through the heat radiation pad, so that heat generated in the transmission coil is transmitted to the heat sink, , The electronic device and the heat dissipation plate, so that the emission efficiency can be improved.

Meanwhile, various other effects will be directly or implicitly disclosed in the detailed description according to the embodiments to be described later.

1 is a diagram for explaining a wireless power transmission system according to an embodiment.
2 is an equivalent circuit diagram of a transmission induction coil according to the embodiment.
3 is an equivalent circuit diagram of a power source and a wireless power transmission apparatus according to an embodiment.
4 is an equivalent circuit diagram of a wireless power receiving apparatus according to an embodiment.
5 is a side perspective view illustrating a wireless terminal holder according to an embodiment.
6 is a front perspective view showing a wireless terminal holder according to an embodiment.
7 is a side perspective view showing a state where a wireless terminal is inserted into a wireless terminal holder according to an embodiment.
8 is a side perspective view showing a state after a wireless terminal is inserted into a wireless terminal holder according to an embodiment.
9 is a front perspective view showing a state after a wireless terminal is inserted into a wireless terminal holder according to an embodiment.
10 is an exploded perspective view showing a wireless terminal holder according to an embodiment.

In the description of the embodiment, in the case where it is described as being formed "above" or "below" each element, the upper or lower (lower) And that at least one further component is formed and arranged between the two components. Also, in the case of "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.

Before describing the cradle first, let's look at a system that reflects the overall concept of transmitting wireless power.

1 is a diagram for explaining a wireless power transmission system according to an embodiment.

Referring to FIG. 1, a wireless power transmission system according to an embodiment may include a power source 100, a wireless power transmission device 200, a wireless power reception device 300, and an access terminal 400.

In an embodiment, the power source 100 may be included in the wireless power transmission device 200, but is not limited thereto.

The wireless power transmission apparatus 200 may include a transmission induction coil 210 and a transmission resonance coil 220.

The wireless power receiving apparatus 300 may include a receiving resonant coil 310, a receiving induction coil 320, and a rectifying unit 330.

Both ends of the power source 100 may be connected to both ends of the transmission induction coil 210.

The transmission resonant coil 220 may be disposed at a certain distance from the transmission induction coil 210.

The reception resonant coil 310 may be disposed at a certain distance from the reception induction coil 320. [

Both ends of the reception induction coil 320 can be connected to both ends of the rectification part 330 and the lower end 400 can be connected to both ends of the rectification part 330. In the embodiment, the terminal 400 may be included in the wireless power receiving apparatus 300.

The power generated by the power source 100 is transmitted to the wireless power transmission apparatus 200 and the power transmitted to the wireless power transmission apparatus 200 is resonated with the wireless power transmission apparatus 200 by a resonance phenomenon, And the resonance frequency values can be transmitted to the same wireless power receiving apparatus 300.

More specifically, the power transmission process will be described below.

The power source 100 may generate and transmit AC power having a predetermined frequency to the wireless power transmission apparatus 200.

The transmission induction coil 210 and the transmission resonance coil 220 may be inductively coupled. That is, in the transmission induction coil 210, an AC current is generated by the AC power supplied from the power source 100, and the transmission resonance coil 220, which is physically spaced apart by the electromagnetic induction by the AC current, Can be induced.

Thereafter, the power transmitted to the transmission resonance coil 220 can be transmitted to the wireless power receiving apparatus 300 having the same resonance frequency by using the frequency resonance method with the wireless power transmission apparatus 200 by resonance.

Power can be transmitted by resonance between two LC circuits whose impedance is matched. Such resonance-based power transmission enables power transmission to be performed at a higher transmission efficiency to a greater extent than the power transmission by the electromagnetic induction method.

The reception resonant coil 310 can receive the electric power transmitted from the transmission resonant coil 220 using the frequency resonance method. An AC current can flow in the reception resonance coil 310 due to the received power and the power transmitted to the reception resonance coil 310 is transmitted to the reception induction coil 320 inductively coupled to the reception resonance coil 310 by electromagnetic induction, Lt; / RTI > The power transmitted to the reception induction coil 320 may be rectified through the rectifying unit 330 and transmitted to the loading stage 400.

In the embodiment, the transmission induction coil 210, the transmission resonance coil 220, the reception resonance coil 310, and the reception induction coil 320 may have a structure of either a spiral or a helical structure, none.

The transmitting resonant coil 220 and the receiving resonant coil 310 may be resonantly coupled so as to transmit electric power at a resonant frequency.

The power transmission efficiency between the wireless power transmission apparatus 200 and the wireless power reception apparatus 300 can be greatly improved due to the resonance coupling between the transmission resonance coil 220 and the reception resonance coil 310.

The above-mentioned wireless power transmission system explained the power transmission by the resonance frequency method.

The embodiment can be applied to power transmission by an electromagnetic induction method in addition to the resonance frequency method.

That is, in the embodiment, when the wireless power transmission system performs power transmission based on the electromagnetic induction, the transmission resonance coil 220 included in the wireless power transmission apparatus 200 and the reception The resonance coil 310 can be omitted.

In wireless power transmission, quality factor and coupling coefficient can have important meaning. That is, the power transmission efficiency can be proportional to the quality index and the coupling coefficient, respectively. Therefore, as the value of at least one of the quality index and the coupling coefficient increases, the power transmission efficiency can be improved.

The quality factor may mean an index of energy that can be accumulated in the vicinity of the wireless power transmission apparatus 200 or the wireless power reception apparatus 300.

The quality factor may vary depending on the operating frequency (w), the shape of the coil, the dimensions, and the material. The quality index can be expressed by the following equation (1).

[Formula 1]

Q = w * L / R

L is the inductance of the coil, and R is the resistance corresponding to the amount of power loss occurring in the coil itself.

The quality factor can have a value from 0 to infinity. The larger the quality index, the higher the power transmission efficiency between the wireless power transmission apparatus 200 and the wireless power reception apparatus 300 can be.

Coupling coefficient means the degree of magnetic coupling between the transmitting coil and the receiving coil, and ranges from 0 to 1.

The coupling coefficient may vary depending on the relative position or distance between the transmitting coil and the receiving coil.

2 is an equivalent circuit diagram of a transmission induction coil according to the embodiment.

As shown in FIG. 2, the transmission induction coil 210 may be constituted by an inductor L 1 and a capacitor C 1, thereby constituting a circuit having a proper inductance and a capacitance value.

The transmission induction coil 210 may be constituted by an equivalent circuit in which both ends of the inductor L1 are connected to both ends of the capacitor C1. That is, the transmission induction coil 210 may be composed of an equivalent circuit in which the inductor L1 and the capacitor C1 are connected in parallel.

The capacitor C1 may be a variable capacitor, and the impedance matching may be performed as the capacitance of the capacitor C1 is adjusted. The equivalent circuits of the transmission resonant coil 220, the reception resonant coil 310, and the reception induction coil 320 may also be the same as or similar to those shown in FIG. 2, but the invention is not limited thereto.

3 is an equivalent circuit diagram of a power source and a wireless power transmission apparatus according to an embodiment.

3, the transmission induction coil 210 and the transmission resonance coil 220 may include inductors L1 and L2 and capacitors C1 and C2 having inductance and capacitance values, respectively.

4 is an equivalent circuit diagram of a wireless power receiving apparatus according to an embodiment.

4, the reception resonant coil 310 and the reception induction coil 320 may include inductors L3 and L4 and capacitors C3 and C4 having inductance and capacitance values, respectively.

The rectifying unit 330 may convert the AC power received from the reception induction coil 320 into DC power and transmit the converted DC power to the loading stage 400.

Specifically, the rectification section 330 may include a rectifier and a smoothing circuit although not shown. In the embodiment, the rectifier may be a silicon rectifier, and may be equivalent to diode D1, as shown in FIG. 4, but this is not limiting.

The rectifier can convert the DC power to the AC power received from the reception induction coil 320.

The smoothing circuit can output smooth DC power by removing the AC component included in the DC power converted in the rectifier. In the embodiment, as the smoothing circuit, as shown in Fig. 4, a rectifying capacitor C5 may be used, but it need not be limited thereto.

The DC power delivered from the rectifying unit 330 may be a DC voltage or a DC current, but the present invention is not limited thereto.

The lower stage 400 may be any rechargeable battery or device requiring direct current power. For example, the lower stage 400 may mean a battery.

The wireless power receiving apparatus 300 and the lower terminal 400 may be included in the wireless terminal 5 or the electronic device.

For example, the wireless terminal 5 may be a smart phone, a tablet PC, or the like, and the electronic device may be a device requiring a mouse or keyboard charging power. Accordingly, the reception resonant coil 310 and the reception induction coil 320 may have shapes conforming to the shape of the electronic device.

The wireless power transmission apparatus 200 can exchange information with the wireless power reception apparatus 300 using in-band or out-of-band communication.

In band communication may refer to a communication in which information is exchanged between a wireless power transmission apparatus 200 and a wireless power reception apparatus 300 using a signal having a frequency used for wireless power transmission. To this end, the wireless power receiving apparatus 300 may further include a switch and a resistance element, and may not receive or receive power transmitted from the wireless power transmission apparatus 200 through the switching operation of the switch. Accordingly, the wireless power transmission apparatus 200 can detect the amount of power consumed in the wireless power transmission apparatus 200 and recognize the ON or OFF signal of the switch included in the wireless power reception apparatus 300. [

Specifically, the wireless power receiving apparatus 300 can change the power consumed in the wireless power transmission apparatus 200 by changing the amount of power absorbed by the resistance using the resistance element and the switch. The wireless power transmission apparatus 200 can detect the change in the consumed power and obtain the status information of the wireless power reception apparatus 300. [ The switch and the resistive element can be connected in series. The state information of the wireless power receiving apparatus 300 may include information on the current charge amount and the charge amount transition of the wireless power receiving apparatus 300. [

More specifically, when the switch is opened, the power absorbed by the resistance element becomes zero, and the power consumed by the wireless power transmission apparatus 200 also decreases.

When the switch is short-circuited, the power absorbed by the resistance element becomes larger than 0, and the power consumed by the wireless power transmission apparatus 200 increases. When the wireless power transmitting apparatus 200 repeats this operation in the wireless power receiving apparatus 300, the wireless power transmitting apparatus 200 detects power consumed in the wireless power transmitting apparatus 200 and performs digital communication with the wireless power receiving apparatus 300 .

The wireless power transmitting apparatus 200 can receive the status information of the wireless power receiving apparatus 300 according to the above operation, and can transmit appropriate power.

Conversely, it is also possible to transmit the status information of the wireless power transmission apparatus 200 to the wireless power reception apparatus 300 by providing a resistance element and a switch on the wireless power transmission apparatus 200 side. The state information of the wireless power transmission apparatus 200 in the embodiment may include the maximum amount of power that can be transmitted by the wireless power transmission apparatus 200, the maximum power amount of the wireless power transmission apparatus 200 that the wireless power transmission apparatus 200 is providing power And information on the amount of available power of the wireless power transmission apparatus 200.

Next, out-of-band communication will be described.

Out-of-band communication refers to communication in which information necessary for power transmission is exchanged by using a separate frequency band instead of the resonance frequency band. An out-of-band communication module is installed in each of the wireless power transmission apparatus 200 and the wireless power reception apparatus 300 so that information necessary for power transmission can be exchanged between them. The out-of-band communication module may be mounted on the power supply device, but the invention is not limited thereto. In the embodiment, the out-of-band communication module may use a short-range communication method such as Bluetooth, Zigbee, wireless LAN, or NFC (Near Field Communication), but the present invention is not limited thereto.

FIG. 5 is a side perspective view illustrating a wireless terminal base according to an embodiment of the present invention, and FIG. 6 is a front perspective view illustrating a wireless terminal base according to an embodiment.

Referring to FIGS. 5 and 6, the wireless terminal holder according to the embodiment may include a housing 1 and a fixing member 3.

Although the embodiment is described as being limited to the wireless terminal base, the base of the embodiment can be applied to all objects that can be mounted and charged. For example, the object may be a wireless terminal, a battery, an electronic device, a home appliance, or the like, all of which are required to be mounted and charged.

The housing 1 may have a rectangular shape when viewed from the front, but it is not limited thereto.

The wireless terminal 5 may have a rectangular shape and have rounded corners, but this is not limitative. Therefore, the wireless terminal 5 can have a short width and a long width.

The height h of the housing 1 is at least larger than the width of the end of the wireless terminal 5 and the width w of the housing 1 may be at least larger than the width of the wireless terminal 5. However,

The power source 100 and the wireless power transmission device 200 described in FIGS. 1-4 may be included in a wireless terminal mount.

Specifically, the power source 100 and the wireless power transmission device 200 can be mounted inside the housing 1. [

In addition, the wireless power receiving apparatus 300 and the lower terminal 400 described in FIGS. 1 to 4 may be mounted in the wireless terminal 5. FIG.

Wireless power can be transmitted by the power source 100 and the wireless power transmission device 200 of the wireless terminal cradle. In this case, when the wireless terminal 5 is adjacent to the wireless terminal cradle within a distance capable of receiving the wireless power, the wireless terminal 5 is provided by the wireless power receiving apparatus 300 of the wireless terminal 5 And may be provided to the loading stage 400 by receiving wireless power.

The terminal end 400 may be a charging element of the wireless terminal 5, for example, a battery.

The guide member 7 can be disposed opposite to the fixing member 3.

A guide member 7 may be formed on the front surface of the housing 1 facing the fixing member 3. [ The guide member 7 may have an inclined surface inclined by 5 DEG or more with respect to the normal line, but the present invention is not limited thereto.

Since the wireless terminal 5 is in face-to-face contact with the guide member 7 of the housing 1, the wireless terminal 5 can also be tilted by more than 5 degrees with respect to the normal.

Therefore, the wireless terminal 5 is stably held by the guide member 7 of the housing 1, so that it is not shaken.

Although not shown, a suction member is formed on the surface of the guide member 7 of the housing 1 in contact with the wireless terminal 5 so that the wireless terminal 5 placed on the guide member 7 can be stably Can be maintained.

For example, the adsorption member may be formed of a resin material or a plastic material, but the present invention is not limited thereto.

For example, a plurality of projections by embossing treatment may be formed on the surface of the adsorption member, but the present invention is not limited thereto.

Further, in order to further fix the wireless terminal 5, the fixing member 3 may be used.

At least a part of the fixing member 3 can basically be brought into contact with the guide member 7 of the housing 1. [ 7, if the wireless terminal 5 is inserted between the fixing member 3 and the guide member 7 of the housing 1, the fixing member 3 is inserted into the guide member 7 of the housing 1, The wireless terminal 5 can be lowered between the guide member 7 and the fixing member 3 of the housing 1 in the downward direction.

As shown in Figs. 8 and 9, the wireless terminal 5 may descend downward and then be seated on the seating member of the housing 1. Fig.

The shape formed by the guide member 7 and the seating member 35 may correspond to a shape formed by the back surface and the side surface of the wireless terminal 5. [ That is, when the wireless terminal 5 has a vertical shape between the back surface and the side surface, the top surface of the seating member 35, specifically, the seating member 35 relative to the guide member 7 may be vertical.

Therefore, the wireless terminal 5 can be stably held and fixed without being shaken by the guide member 7 and the inclination, the seating member 35 and the fixing member 3.

As described above, wireless power is supplied from the wireless power receiving apparatus 200 mounted in the housing 1 to the wireless terminal 5 that is seated on the seating member 35 of the housing 1, The wireless power is received by the wireless power receiving apparatus 300 and provided to the load station 400 so that the load station 400, that is, the battery can be charged.

If the wireless power receiving apparatus 300 is included in the battery, the battery may be directly mounted on the seating member 35 of the housing 1 instead of the wireless terminal 5 so that the wireless power may be charged.

Thus, the embodiment can not only accommodate both the battery itself or the wireless terminal 5 equipped with the battery, but can charge both of them.

As described above, in order to improve the power transmission efficiency between the wireless power transmission apparatus 200 and the wireless power reception apparatus 300, at least one of the quality index and the coupling coefficient must be increased. Although the transmission coil 210 or 210 and 220 of the wireless power transmission apparatus 200 and the reception coils 320 or 310 and 320 of the wireless power reception apparatus 300 are connected to each other Should be parallel to each other.

The transmission coil 210 or 210 and 220 of the wireless power transmission apparatus 200 mounted inside the housing 1 can be disposed parallel to the guide member 7 of the housing 1. [

10 is an exploded perspective view showing a wireless terminal holder according to an embodiment.

Referring to FIG. 10, the wireless terminal holder according to the embodiment may include a housing 1 and a fixing member 3.

The housing 1 may include a first case 33 and a second case 75 which is fastened to the first case 33.

The first case 33 may include a seating member 35 formed at the lower portion and a guide member 7 inclined with respect to the seating member 35.

The seating member 35 and the guide member 7 are integrally formed by molding, but the present invention is not limited thereto.

The back surface of the wireless terminal 5 is leaned by the guide member 7 and the side surface of the wireless terminal 5 can be seated on the seating member 35. [

The buffer member 45 may be disposed on the seating member 35. [ That is, the buffer member 45 may be attached to the upper surface of the seating member 35. The buffer member 45 may prevent the wireless terminal 5 from slipping when the wireless terminal 5 is seated, so that the wireless terminal 5 is not shaken.

The buffer member 45 may be formed of a resin material such as epoxy or a rubber material having an elastic force, but the invention is not limited thereto.

A plurality of grooves may be formed on the upper surface of the buffer member 45 along one direction, but the present invention is not limited thereto. The shaking of the wireless terminal 5 can be further suppressed by such grooves or projections.

The cushioning member 45 may have a shape corresponding to the shape of the upper surface of the seating member 35, but the present invention is not limited thereto.

The center of the seating member 35 may include a first recess 37. The first recess 37 may have a shape that is fine in a direction close to the guide member 7 from one side of the seating member 35.

The seating member 35 may include second and third recesses 42 and 43 formed on both sides of the first recess 37. [ The second and third recesses 42 and 43 may have a top-down shape.

The seating member 35 includes a first side wall 81 disposed in the first recess 37 and a second recess 42 disposed in the first recess 37 and a third recess 43 disposed in the third recess 43. [ Two side walls 83, as shown in FIG. First and second holes 39 and 41 may be formed in the first and second side walls 81 and 83, respectively. The first recess 37 and the second and third recesses 42 and 43 can be connected by the first and second holes 39 and 41 of the first and second holes 39 and 41. [

The center of the buffer member 45 may also have a recess of the same shape as the first recess 37 of the seating member 35.

The buffer member 45 is attached to the seating member 35 so that the upper portions of the second and third recesses 42 and 43 of the seating member 35 can be clogged.

The fixing member 3 is connected to the seat member 35 and can be rotationally moved.

The fixing member 3 may include first and second support rods 11 and 13, first and second rotation shafts 19 and 21, a pressing portion 25 and a lead-in portion 27.

The pressing portion 25 may be formed to extend from the first and second supports 11 and 13. In other words, the first and second support rods 11 and 13 can be branched and extended from the pressing portion 25. Therefore, the opening 30 can be formed by the pressing portion 25 and the first and second supporting members 11, 13.

For example, the first and second support rods 11 and 13 branched from the pressurizing portion 25 may be formed so as to be distant from each other in a downward direction, and then be formed to be closer to each other. The force of the fixing member 3 is maximally collected and transmitted to the wireless terminal 5 so that the wireless terminal 5 is firmly fixed and the pressing portion 25 and the first and second supports 11 and 13 The contact area of the wireless terminal 5 with the wireless terminal 5 is maximized and the wireless terminal 5 can be stably fixed.

The distance between the lower part of the first support 11 and the lower part of the second support 13 may be smaller than the diameter of the opening 30. [

The distance between the lower portion of the first support 11 and the lower portion of the second support 13 is equal to the width of the first recess 37 of the seating member 35 or the distance between the first and second side walls 81, May be less than the interval. The first and second connecting members 15 and 17 extending from the lower portion of the first supporting frame 11 and the lower portion of the second supporting frame 13 are connected to the first and second side walls 81 , 83), as shown in Fig.

The first and second linking members 15 and 17 may extend from the first and second support rods 11 and 13 toward the guide member 7 side.

The first and second connecting members 15 and 17 may connect the first and second rotating shafts 19 and 21 to the first and second connecting members 15 and 17, respectively. That is, the first linking member 15 may extend from the first support 11 and the first rotation shaft 19 may extend from the first linking member 15. The second linking member 17 may extend from the second support 13 and the second rotation shaft 21 may extend from the second linking member 17.

Each of the first and second rotary shafts 19 and 21 may extend from one end of the first and second connecting members 15 and 17 in directions away from each other. The first rotation shaft 19 extends from the one end of the first linking member 15 in the left direction when viewed from the front and the second rotation axis 21 extends from the one end of the first linking member 15 toward the second linking member 17. [ As shown in FIG.

The first rotation shaft 19 may extend through the first hole 39 formed in the first side wall 81 of the seating member 35 and into the second recess 42. The second rotation shaft 21 may extend through the second hole 41 formed in the second side wall 83 of the seating member 35 and into the third recess 43.

The first and second contact portions 23 may be formed extending from the first and second rotation shafts 19 and 21, respectively. Each of the first and second contact portions 23 may be formed to be continuous from one end of the first and the second rotation shafts 19 and 21 to the lower direction, but the present invention is not limited thereto.

The first and second abutting portions 23 are in contact with the first and second elastic members 28 and 29 so that they are always restored by the first and second elastic members 28 and 29, .

The first and second elastic members 28, 29 may be springs, but are not limited thereto.

When the first and second contact portions 23 are moved away from the guide member 7 and the first and second rotation shafts 19 and 21 are rotated clockwise by the restoring force, the first and second rotation shafts 19, The first and second support members 11 and 13 connected to the first and second contact portions 21 and 21 and the pushing portion 25 and the pulling portion 27 are moved in a direction opposite to the first and second contact portions 23, Lt; / RTI >

If the wireless terminal 5 is inserted between the guide member 7 and the inlet 27, the inlet 27 can be moved away from the guide member 7 by the wireless terminal 5. When the first and second rotary shafts 19 and 21 are rotated counterclockwise by the movement of the inlet portion 27, the first and second contact portions 23 and 24 connected to the first and second rotary shafts 19 and 21 Is forcibly moved in the direction approaching the guide member 7 so that the first and second elastic members 28 and 29 can be compressed by the first and second contact portions 23, respectively. However, since the restoring force by the first and second elastic members 28 and 29 is still applied to the first and second contact portions 23, the first and second rotation shafts 19 and 21 try to rotate clockwise And the rotational force is transmitted to the first and second support rods 11 and 13, the pressing portion 25 and the inlet portion 27 as it is and the first and second support rods 11 and 13, 25 and the pushing portion 25 press the part of the upper surface of the wireless terminal 5 and this pressing state can be continued until the wireless terminal 5 is detached from the housing 1 have.

The lead-in portion 27 may be disposed to face the guide member 7, and may be formed to be away from the guide member 7 in an upward direction. In other words, the lead-in portion 27 may be formed so as to extend from the pressing portion 25 and be bent in a direction away from the guide member 7. [

The fixing member 3 may include a cushioning member 31 to prevent scratches that may occur upon contact with the wireless terminal 5.

The buffer member 31 may be attached on the inner surface of the fixing member 3. Specifically, the buffer member 31 can be attached to the inner surface of the pressing portion 25 at least. More specifically, the buffer member 31 may be attached to the entire area of the pressing portion 25 and a portion of the inlet 27.

The buffer member 31 may include one of a resin material, a rubber material, and a plastic material, but is not limited thereto.

The printed circuit board 65, the heat sink 61, and the transmitting coil 210 or 210 and 220 may be disposed between the first and second cases 33 and 75.

An electronic device 69, such as a power source 100 and a control unit, may be mounted on the printed circuit board 65.

The electronic device 69 may be disposed on the back surface of the printed circuit board 65 so as to face the inner surface of the second case 75. [ By disposing the electronic device 69 in this manner, the influence of the magnetic field generated by the transmission coil 210 or 210 and 220 can be minimized. The heat sink 61 and the printed circuit board 65 are brought into direct contact with each other by arranging the electronic element 69 as described above so that the heat generated from the transmission coil 210 or 210 and 220 to the heat sink 61 The transferred heat can be transferred to the printed circuit board 65 to improve heat dissipation efficiency.

The wireless power transmission apparatus 200 can be configured by the control unit and the transmission coil 210 or 210 and 220. [ A power source 100 may be included in the wireless power transmission device 200.

The control unit can play a role of controlling overall wireless power transmission. For example, it is possible to adjust the amount of radio power to be transmitted to the wireless power receiving apparatus 300 provided in the wireless terminal 5, to process follow-up actions based on the charging status information of the wireless power receiving apparatus 300, And the wireless power receiving apparatus 300, but the present invention is not limited thereto.

The printed circuit board 65 may include at least one opening 67. For example, the opening 67 may be formed at the center of the printed circuit board 65, but this is not limited thereto.

The size of the opening 67 may be equal to or larger than the size of the protruding member 77 of the second case 75, which will be described later, but is not limited thereto. The size of the opening 67 may vary depending on the size of the projecting member 77.

The opening 67 may have a rectangular shape, but is not limited thereto.

At least one opening 67 formed in the printed circuit board 65 may have different sizes and / or shapes.

The electronic element 69 can be mounted on the printed circuit board 65 except for the opening 67. [

A connector 63 may be connected to one side of the printed circuit board 65. The connector 63 may provide an externally transmitted signal to the electronic device 69 or provide the signal of the electronic device 69 to the outside.

The transmitting coils 210 or 210 and 220 may be disposed on the upper surface of the printed circuit board 65. The transmit coils 210 or 210 and 220 may generate and transmit wireless power to the wireless terminal 5. As described above, the transmission method of the wireless power may include an electromagnetic induction method and a resonance frequency method.

A magnetic substrate 59 may be disposed between the printed circuit board 65 and the transmission coil 210 or 210 and 220. [ The magnetic substrate 59 may include, but is not limited to, a magnetic material such as ferrite.

The magnetic substrate 59 may itself be made of a magnetic material or may comprise a substrate and a magnetic material disposed on the substrate.

The magnetic substrate 59 can prevent the magnetic field generated by the transmitting coil 210 or 210 and 220 from affecting the electronic device.

The transmit coils 210 or 210 and 220 may be attached on the magnetic substrate 59. For example, a magnetic substance may be attached on a substrate, a transmission coil 210 or 210 and 220 may be attached on the magnetic body, and an insulating layer may be formed on the transmission coil 210 or 210 and 220 .

Heat is generated in the transmission coil 210 or 210 and 220 due to current flow. If this heat is not released quickly, the magnetic field induced in the transmission coil 210 or 210 and 220 may be influenced, and the power transmission efficiency may ultimately be lowered.

In order to solve this problem, a heatsink 61 may be disposed between the printed circuit board 65 and the magnetic substrate 59. The magnetic substrate 59, the heat sink 61, and the printed circuit board 65 can be fastened together, but the present invention is not limited thereto. For example, at least one screw can be fastened to the printed circuit board 65 through the magnetic substrate 59 and the heat sink 61.

The heat sink 61 may be formed of, for example, an anodized aluminum, but is not limited thereto.

The magnetic substrate 59 is brought into contact with the upper surface of the heat sink 61 and the printed circuit board 65 can be brought into contact with the lower surface of the heat sink 61. [

Heat generated by the transmission coils 210 or 210 and 220 can be quickly transmitted to the printed circuit board 65 by such a heat sink 61. [

In this case, if the heat transferred to the printed circuit board 65 is not rapidly released to the outside, it may affect the electronic element 69 mounted on the printed circuit board 65.

To this end, at least one heat radiation pad 73 may be disposed between the electronic element 69 and the inner surface of the second case 75. That is, an adhesive material is formed on both sides of the heat dissipation pad 73, and the electronic device 69 is attached to one surface of the heat dissipation pad 73 by the adhesive material and the other surface is attached to the inner surface of the second case 75 . The heat transferred to the printed circuit board 65 can be transferred to the second case 75 through the electronic element 69 and the heat radiation pad 73 and then discharged to the outside.

Nevertheless, when a charging operation is performed for a long time, there is a limit to discharge the heat generated from the transmission coil 210 or 210 and 220 to the outside through the heat radiation pad 73 on the printed circuit board 65 .

In order to solve this problem, the second case 75 can be brought into contact with the heat sink 61. [

The second case 75 may include a protruding member 77 protruding inwardly, that is, in the direction in which the guide member 7 approaches. The second case 75 may be formed to protrude toward the first case 33. The protruding member 77 may be formed on the printed circuit board 65 corresponding to the opening formed in the printed circuit board 65. For example, since the opening 67 is formed at the center of the printed circuit board 65, the protruding member 77 can also be formed at the center of the second case 75. [

The thickness of the protruding member 77 may be set in consideration of the thickness of the printed circuit board 65, the thickness of the electronic device 69, the thickness of the margin margin, and the like.

A heat dissipating plate 79 may be disposed on the upper surface of the protruding member 77. Or the upper surface of the protruding member 77 includes an opening (not shown), and a heat radiating plate may be provided in the opening.

The upper surface of the protruding member 77 can be brought into contact with the back surface of the heat sink 61 through the opening 67 of the printed circuit board 65.

The heat radiating plate 79 disposed on the protruding member 77 can be brought into contact with the back surface of the heat sink 61 through the opening 67 of the printed circuit board 65. [

The heat radiation pad 71 may be disposed between the heat radiation plate 79 and the heat sink 61 to enhance the contact force between the heat radiation plate 79 and the heat sink 61 and improve the heat radiation efficiency. That is, the heat sink 61 can stably contact the heat radiating plate 79 of the protruding member 77 by the heat radiating pad 71. The heat sink 61 is not separated from the heat radiating plate 79 of the protruding member 77 by the heat radiating pad 71.

The heat generated in the transmission coil 210 or 210 and 220 is transmitted to the heat sink 61 and the heat transmitted to the heat sink 61 is transmitted to the printed circuit board 65, To the second case (75) through the second case (73).

The heat transferred to the heat sink 61 can be transferred to the heat radiation plate 79 disposed on the projecting member 77 of the second case 75 through the heat radiation pad 71. [

These heat transfer paths are summarized as follows.

(1) Transmission coil 210 or 210 and 220 -> Magnetic substrate 59 -> Heat sink 61 -> Printed circuit board 65 -> Electronic device 69 -> Heat radiating pad (73) -> the second case (75)

(2) Transmission coil 210 or 210 and 220 -> Magnetic substrate 59 -> Heat sink 61 -> Heat radiating pad 71 -> Heat radiating plate 79

As described above, since the heat of the transmission coil 210 or 210 and 220 is emitted in two paths in the embodiment, the heat emission efficiency can be maximized. By maximizing the heat emission efficiency, a magnetic field can be stably generated in the transmission coil 210 or 210 and 220, and the power transmission efficiency can be improved.

The first case 33 and the second case 75 may be fastened using at least one screw. That is, at least one screw 49 can be fastened to the second case 75 through the fastening holes 47 of the first case 33.

The first and second elastic members 28 and 29 can be fixed within the second and third recesses 42 and 43 of the seating member 35 by the elastic member fastening member 51. [ The first and second elastic members 28 and 29 can be fixed to the first and second regions of the elastic member fastening member 51. [ At least one screw 55 of the elastic member fastening member 51 can be fastened to the seat member 35 through the fastening hole 53.

The elastic member fastening member 51 can be detachably attached to the seat member 35. [ By this attachment / detachment, the first and second elastic members 28 and 29 can be replaced if necessary.

The wireless power receiving apparatus 400 according to the exemplary embodiment of the present invention can be used for a mobile device such as a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (personal digital assistant), a portable multimedia player (PMP) And can be mounted on the terminal.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, except when it is applicable only to a mobile terminal.

In the embodiment, the method of transmitting electric power by electromagnetic induction has a relatively low Q value and means tightly coupling, and a method of transmitting power by resonance has a relatively high Q value, May be referred to as loosely coupling.

While the preferred embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1: Housing 3: Fixing member
5: wireless terminal 7: guide member
11, 13: Support base 15, 17: Connecting member
19, 21: rotation shaft 23:
25: pressing portion 27:
28, 29: elastic member 30: opening
31, 45: buffer member 33: first case
35: seat member 37, 42, 43: recess
39, 41: holes 47, 53: fastening holes
49, 55: screw 51: elastic member fastening member
59: magnetic substrate 61: heat sink
63: connector 65: printed circuit board
67: aperture 69: electronic element
71, 73: heat radiating pad 75: second case
77: protruding member 79: heat radiating plate
100: power supply device 200: wireless power transmission device
210: transmission induction coil 220: transmission resonance coil
300: wireless power receiving apparatus 310: receiving resonant coil
320: reception induction coil 330: rectification part
400:

Claims (13)

A first case;
A second case coupled to the first case;
A printed circuit board disposed on the second case and including at least one opening;
A transmission coil disposed on the printed circuit board;
And a heat sink disposed between the printed circuit board and the transmission coil,
Wherein the heat sink is in contact with at least a part of the second case.
The method according to claim 1,
Wherein the heat sink is in contact with the second case through the at least one opening of the printed circuit board.
3. The method of claim 2,
And at least a part of the second case includes a projecting member projecting toward the first case.
The method of claim 3,
Further comprising a heat dissipating plate disposed on an upper surface of the protruding member,
Wherein the heat sink is in contact with the heat dissipation plate through the at least one opening of the printed circuit board.
The method of claim 3,
Wherein the upper surface of the projecting member includes an opening,
Further comprising a heat radiation plate disposed in the opening of the projecting member,
Wherein the heat sink is in contact with the heat dissipation plate through the at least one opening of the printed circuit board.
The method according to claim 4 or 5,
And a first heat dissipation pad disposed between the heat sink and the heat dissipation plate.
The method of claim 3,
Wherein the size of the opening of the printed circuit board is at least larger than the size of the projecting member.
The method according to claim 1,
And a magnetic substrate disposed between the transmission coil and the heat sink.
9. The method of claim 8,
Wherein the magnetic substrate and the printed circuit board are in contact with the upper and lower surfaces of the heat sink.
The method according to claim 1,
And an electronic element mounted on the printed circuit board facing the second case.
10. The method of claim 9,
And at least one second heat-radiating pad disposed between the electronic device and the second case.
The method according to claim 1,
Wherein an outer surface of the first case has an inclined sloped surface,
And the transmitting coil is disposed in parallel with the inclined surface.
A wireless terminal receiving wireless power from the transmission coil of the cradle according to any one of claims 1 to 5 and 7 to 12.

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