KR101995805B1 - Wireless charging apparatus - Google Patents

Abstract

The present invention provides a wireless charging apparatus which uses a heat radiation fan to actively remove heat generated by a transmission coil unit and allows air discharged in a cover to flow along an outer side of the cover and cool the cover to increase heat radiation performance. According to the present invention, the wireless charging apparatus comprises: a transmission coil unit consisting of a plurality of coils; a heat sink wherein the transmission coil unit is seated on one surface thereof and a plurality of heat radiation ribs for radiating heat generated from the transmission coil unit protrude from the other surface thereof; a heat radiation fan arranged to face the other surface of the heat sink to blow air to the other surface of the heat sink; a cover accommodating the transmission coil unit, the heat sink, and the heat radiation fan therein and having a discharge hole to discharge internal air to the outside by driving the heat radiation fan; and a seating pad having one surface thereof seated on one surface where the discharge hole is formed in an outer side of the cover to cover the one surface of the cover and an electronic device charged by the transmission coil unit seated on the other surface thereof. A plurality of first air flow passages, in which air discharged through the discharge hole flows, are longitudinally formed on one surface of the seating pad along a length of the seating pad.

Description

[0001] WIRELESS CHARGING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless charging device, and more particularly, to a wireless charging device capable of improving the reliability of a product by effectively discharging heat by a heat-dissipating fan.

2. Description of the Related Art Generally, a mobile terminal carried by people, that is, a portable mobile terminal, is an electronic device driven by using a power source by a power source unit or a separately mountable power source such as a battery.

Such a portable mobile terminal is very convenient because it can be portable, but there is a problem that it is necessary to charge the power source from time to time. In addition, the user needs to charge the household electric power by supplying electric power using a wired cable such as a wire connector , There is a problem in that a cable cable is usually carried together.

In recent years, various charging units for charging the portable mobile terminal as described above are also provided in vehicles, and the technology has been developed with the trend that a wireless charging apparatus is provided to further improve the user's convenience.

However, the problem with the wireless charging device installed in the vehicle is that a predetermined heat is generated during the process of generating electric power for charging between the transmitting coil part and the receiving coil part incorporated in the portable mobile terminal, The wireless charging efficiency may be lowered unless heat is released.

Korean Patent Registration No. 10-1727465 (hereinafter referred to as the prior art) discloses a technique using a heat sink and a heat dissipating fan to dissipate heat generated in the transmission coil.

However, in the related art, there is a disadvantage that heat dissipation performance of the wireless charging device and the mobile terminal is deteriorated because the heat dissipation structure is not provided on the seating pad provided outside the wireless charging device and on which the mobile terminal is seated.

Korean Registered Patent No. 10-1727465 (published on Apr. 17, 2017)

A problem to be solved by the present invention is to actively remove heat generated in a transmitting coil part using a heat-dissipating fan and to cool the cover while air discharged in the cover flows on the outer surface of the cover to improve heat radiation performance The present invention provides a wireless charging device capable of charging a battery.

Another problem to be solved by the present invention is to provide an air conditioner which is capable of realizing uniform heat radiation performance by applying an amount of heat exchanged with outside air along the length of the seat pad, And a wireless charging device.

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

In order to attain the above object, a wireless charging apparatus according to the present invention is a wireless charging apparatus comprising: a transmission coil part composed of a plurality of winding coils; and a plurality of A heat sink having a heat radiating rib protruding from the heat sink; a heat dissipating fan disposed opposite to the other surface of the heat sink for blowing air to the other surface of the heat sink; And a discharge hole formed in the outer surface of the cover to receive the air discharged from the discharge space to the outside by driving the heat radiation fan. And a mounting pad on which an electronic device to be charged by the transmission coil part is seated, A plurality of first air flow paths through which the gas flows are formed along the length of the seating pad.

Wherein the seating pad is formed with a curved surface portion having a convex surface on one side and a concave surface on the other side along the length of the seating pad between the plurality of first air flow paths and the curved surface portion has a plurality of heat dissipating And a hole may be formed in communication with the first air passage.

Wherein the plurality of heat dissipating holes are disposed at one end of the curved surface portion near the discharge hole and have a plurality of first holes formed at a first size and a plurality of second holes formed at the other end of the curved surface portion, A plurality of second holes formed between the plurality of first holes and the plurality of second holes and formed in a third size smaller than the first size and larger than the second size; And may include a third hole.

The plurality of heat dissipation holes may be formed to have a gradually smaller size as the distance from the discharge hole increases.

The discharge hole is formed to be offset from one end in the longitudinal direction of the cover, and air can be discharged to one end in the longitudinal direction of the first air passage.

The cover may be formed with an inclined surface, which faces the longitudinal direction of the first air passage, among the surfaces forming the discharge hole.

The cover includes a first cover having one side opened, the heat sink inserted through the opened side, and a bottom cover having a first cover formed with an inflow port through which air blown from the heat radiation fan flows, A second cover which is partly covered with the heat sink and is coupled to the first cover and in which the discharge hole is formed and on which the seat pad is seated; a second cover coupled to the other side of the first cover, And a third cover having a suction port through which air is sucked is formed on a bottom surface facing the heat dissipating fan. A second air passage communicating with the inlet port is formed in the third cover, The second cover may be formed with a third air passage connecting the second air passage and the discharge hole.

The second cover may include an upper surface portion disposed on the upper side of the first cover and a side surface portion disposed on the side surface of the first cover, and the third air flow path may be formed on the side surface portion.

The details of other embodiments are included in the detailed description and drawings.

The wireless charging apparatus according to the present invention has the following effects.

First, since the heat radiating fan for cooling the transmitting coil part is provided, not only the heat generated in the transmitting coil part can be actively removed by using the heat radiating fan, but also the air discharged through the discharging hole of the cover to the seating pad The air discharged from the cover flows along the outer surface of the cover to cool the cover to improve the heat radiation performance.

Second, the seating pad is provided with a curved surface portion between the plurality of first air channels, and the curved surface portion is formed with a plurality of heat dissipating holes whose size decreases as the distance from the discharge hole is increased. Therefore, The amount of heat exchanged with the outside air while flowing through the outer surface of the cover is differently applied along the length of the seating pad, so that uniform heat dissipation performance can be realized.

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

1 is a cross-sectional view showing a wireless charging apparatus according to an embodiment of the present invention,
FIG. 2 is a plan view showing the seating pad shown in FIG. 1,
3 is a side cross-sectional view of the seating pad shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, a wireless charging apparatus according to an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a cross-sectional view showing a wireless charging apparatus according to an embodiment of the present invention, Fig. 2 is a plan view showing the seating pad shown in Fig. 1, and Fig. 3 is a side sectional view of the seating pad shown in Fig.

1 to 3, a wireless charging apparatus according to an embodiment of the present invention includes a transmission coil unit 10 composed of a plurality of winding coils, a heat sink (not shown) for dissipating heat generated in the transmission coil unit 10, A heat radiating fan 30 for blowing air to the heat sink 20 and a cover 40 and 50 for mounting the transmitting coil part 10, the heat sink 20 and the heat radiating fan 30 therein. 60, and a seating pad 70 that is seated on the outer surface of the cover 40, 50, 60.

The heat sink 20 has a plurality of heat radiating ribs 21 protruding from one side (upper surface) of the transmitting coil part 10 and a plurality of heat radiating ribs 21 for radiating heat generated from the transmitting coil part 10 on the other side .

The heat dissipation fan 30 is disposed opposite to the other surface (lower surface) of the heat sink 20 and blows air to the other surface (lower surface) of the heat sink 20.

The covers 40, 50 and 60 accommodate the transmitting coil part 10, the heat sink 20 and the heat radiating fan 30 therein. The cover (40, 50, 60) is provided with a discharge hole (55) through which the air inside by the driving of the heat radiation fan (30) exits to the outside.

One side (upper surface) of the outer surface of the cover 40 (50, 60) on which the discharge hole 55 is formed is seated on the seating pad 70, . On the other surface (upper surface) of the seating pad 70, an electronic device (not shown) to be filled by the transmitting coil portion 10 is seated. Here, the electronic device may be a mobile terminal generally carried by people. The electronic device may include all devices having a receiving coil part capable of being charged wirelessly by forming a predetermined electromagnetic field with the transmitting coil part 10.

Meanwhile, the transmitting coil part 10 can form a predetermined electromagnetic field with the receiving coil part, and the electromagnetic field can be formed by a magnetic induction method or a magnetic resonance method according to a wireless charging method .

The seating pad 70 may be coupled to the cover 40, 50, 60, or may be coupled to a predetermined portion of a vehicle compartment of a vehicle to which the wireless charging device of the present invention is coupled. However, the seat pad 70 may be mounted on the outer surface (upper surface) of the covers 40, 50 and 60 and the electronic device may be seated on the other surface.

The cover 40, 50, 60 includes a first cover 40, a second cover 50, and a third cover 60.

One side (upper side) of the first cover 40 is opened. The heat sink 20 is inserted into the first cover 40 through the open side (upper side). The open side (upper side) of the first cover 40 can be shielded by the heat sink 20. [ On the bottom surface of the first cover (40), an inlet (41) through which the air blown from the heat radiation fan (30) flows is formed.

The second cover 50 is coupled to the first cover 40 so as to cover the transmitting coil part 10 and the heat sink 20. [ The second cover 50 includes an upper surface portion 51 disposed on the upper side of the first cover 40 and covering the transmission coil portion 10 and the heat sink 20 and a lower surface portion 51 extending downward from the rim of the upper surface portion 51. [ And a side surface portion 52 disposed on the side surface of the first cover 40. The upper surface portion 51 may form the upper surface of the cover 40, 50 or 60 and the side surface portion 52 may form the side surface of the cover 40, 50 or 60. The discharge hole 55 may be formed in the upper surface portion 51 of the second cover 50. The discharge hole 55 is formed at a position offset to one end of the upper surface portion 51 of the second cover 50. The seating pad 70 is seated on the upper surface portion 51 of the second cover 50.

The third cover 60 is coupled to the other side (lower side) of the first cover 40. Inside the third cover (60), a heat dissipating fan (30) is disposed facing the inlet (41). The third cover (60) is provided with a suction port (61) for sucking air on the bottom surface facing the heat radiation fan (30). The heat radiating fan 30 is driven to suck the outside air from the suction port 61 and blow the air to the inlet port 41 and enter the inner space of the first cover 40 through the inlet port 41 to be introduced into the heat sink 20 And is heat-exchanged with a plurality of heat-radiating ribs 21 formed.

A plurality of first air passages 71 through which air escaping through the discharge holes 55 flow is formed on one surface (lower surface) of the seating pad 70. The plurality of first air passages (71) are formed to be long along the length of the seating pad (70). The air that has escaped through the discharge holes 55 to the outside of the covers 40, 50 and 60 flows along the outer surfaces of the covers 40, 50, and 60 while flowing through the plurality of first air flow paths 71, 60, and the outer surfaces of the covers (40, 50, 60) can be cooled. It is preferable that the first air flow path 71 is formed at least in a portion of the seating pad 70 corresponding to the transmission coil part 10.

The discharge holes 55 are formed in such a manner as to be offset from one ends in the longitudinal direction of the covers 40, 50 and 60, and can discharge air to one end in the lengthwise direction of the first air passage 71.

The covers 40, 50, and 60 may be formed as inclined surfaces 56 in the surface of the first air passage 71 facing the longitudinal direction of the discharge holes 55.

A second air passage 62 is formed in the third cover 60 to communicate with an inlet 41 formed in the bottom surface of the first cover 40. A second air passage 62 is formed in the side portion 52 of the second cover 50, And a third air passage 53 connecting the air passage 62 and the discharge hole 55 are formed. Therefore, when the heat radiating fan 30 is driven, the air blown by the heat radiating fan 30 flows into the first cover 40 through the inlet 41 and is heat-exchanged with the heat radiating rib 21 of the heat sink 20 The air that has been moved to the second air flow path 62 flows through the third air flow path 53 and through the discharge hole 55 to the second air flow path 62 through the inlet port 41, Can be moved to the first air passage (71).

The seating pad 70 is further provided with a curved surface portion 72 between the plurality of first air flow paths 71. The curved surface portions 72 may be formed one by one between the respective first air flow paths 71, and may be formed in plural numbers. The curved surface portion 72 is formed such that one surface (lower surface) is convex and the other surface (upper surface) is concave and is formed long along the length of the seating pad 70. The lengths of the first air flow path 71 and the curved surface portion 72 may be equal to each other. The convex one surface (lower surface) of the curved surface portion 72 is in contact with one surface (upper surface) of the covers 40, 50, and 60.

Further, a plurality of heat dissipation holes 73, 74, and 75 are formed in the curved surface portion 72. The plurality of heat dissipating holes 73, 74, and 75 are spaced apart from each other along the length of the curved surface portion 72. The plurality of heat dissipating holes (73, 74, 75) communicate with the first air flow path (71).

A plurality of heat dissipating holes 73, 74 and 75 are formed in a single row along the longitudinal direction on the curved surface portion 72 disposed on the outermost side in the widthwise direction among the plurality of curved surface portions 72 and the remaining curved surface portions 72 ), A plurality of heat dissipating holes (73, 74, 75) are formed in two rows along the longitudinal direction. The plurality of heat dissipating holes 73, 74 and 75 in a row among the plurality of heat dissipating holes 73, 74 and 75 formed in two rows communicate with the first air passage 71 disposed on one side of the curved surface portion 72, And the plurality of heat dissipating holes 73, 74, 75 in the other row are communicated with the first air passage 71 disposed on the other side of the curved surface portion 72.

The plurality of heat dissipation holes 73, 74, and 75 include a plurality of first holes 73, a plurality of second holes 74, and a plurality of third holes 75. The plurality of first holes 73 are formed to have the same size, the plurality of second holes 74 are formed to have the same size, and the plurality of third holes 75 are formed to have the same size.

The plurality of first holes (73) are disposed at one end of the curved surface portion (72) near the discharge hole (55). The plurality of first holes 73 are each formed in a first size.

The plurality of second holes 74 are disposed at the other end of the curved surface portion 72 far from the discharge hole 55 of the curved surface portion 72. Each of the plurality of second holes 74 has a second size smaller than the first size.

A plurality of third holes 75 are arranged between the plurality of first holes 73 and the plurality of second holes 74 in the curved surface portion 72. [ The plurality of third holes (75) are each formed in a third size smaller than the first size and larger than the second size. The first hole 73 is the largest, the third hole 75 is the next largest, and the second hole 74 is the smallest. The initial air discharged to the outside of the covers (40, 50, 60) through the discharge hole (55) is relatively high temperature air. The air discharged from the discharge hole 55 flows from the first air passage 71 to the first hole 73 through the first hole 73. Therefore, Exchanged with the external air introduced through the first air passage 71 and can be easily cooled. The cooled air flows through the third hole 75 and the second hole 75, which gradually decrease in the course of flowing from one end to the other end of the first air passage 71, Exchanged with the air introduced through the holes and cooled. The size of the first hole 73 is the largest and the size of the third hole 75 is the second largest and the size of the second hole 74 is the smallest. The air discharged to the flow path 71 becomes uniform in the process of moving from the one end to the other end of the first air flow path 71 and uniform heat radiation performance can be realized.

The plurality of heat dissipating holes 73, 74, and 75 include a plurality of first holes 73 having the largest size, a plurality of second holes 74 having the smallest size, And a plurality of third holes (75) having a middle size of the size of the second holes (74).

However, although not shown in the drawings, the plurality of heat dissipation holes 73, 74, and 75 may be formed to be gradually smaller as the distance from the discharge hole 55 increases.

As described above, since the wireless charging apparatus according to the embodiment of the present invention is provided with the heat radiation fan 30 that cools the transmission coil section 10, the heat generated in the transmission coil section 10 is transmitted to the heat radiation fan 30 A plurality of first air passages 71 for guiding the air discharged through the discharge holes 55 of the covers 40, 50 and 60 to the seating pad 70, The air discharged in the covers 40, 50 and 60 flows along the outer surfaces of the covers 40, 50 and 60 to cool the covers 40, 50 and 60 to improve the heat radiation performance .

The seating pad 70 is provided with a curved surface portion 72 between the plurality of first air flow paths 71. The curved surface portion 72 is provided with a plurality of heat dissipating holes The amount of heat exchange with the outside air while flowing through the outer surfaces of the covers 40, 50, and 60 is defined as the amount of heat that the air discharged from the covers 40, 50, The heat dissipation performance can be uniformly applied along the length of the heat dissipating unit 70.

It will be understood by 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. It is therefore to be understood that the above-described embodiments are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalents thereof are included in the scope of the present invention Should be interpreted.

10: transmitting coil part 20: heat sink
21: heat dissipating rib 30: heat dissipating fan
40: first cover 41: inlet
50: second cover 51: upper surface
52: side portion 53: third air passage
55: discharge hole 56: inclined surface
60: third cover 61: inlet
62: second air passage 70: seat pad
71: first air passage 72: curved portion
73: first hole 74: second hole
75: Third hole

Claims (8)

A transmitting coil part composed of a plurality of winding coils;
A heat sink having a plurality of heat radiating ribs protruding from the other surface of the transmission coil part for radiating heat generated from the transmission coil part;
A heat dissipating fan disposed opposite to the other surface of the heat sink and blowing air to the other surface of the heat sink;
A cover for accommodating the transmission coil part, the heat sink, and the heat radiation fan therein and having discharge holes for discharging air from the inside by driving the heat radiation fan to the outside; And
A seating pad on which one surface of the outer surface of the cover is seated on one surface of the cover and on which a device for receiving electromagnetic waves is formed; Lt; / RTI >
Wherein a plurality of first air flow paths through which the air escaping through the discharge holes flow is formed on one surface of the seating pad along the length of the seating pad,
Wherein the seating pad is formed with a curved surface having a convex surface on one side and a concave surface on the other side along the length of the seating pad between the plurality of first air channels,
And a plurality of heat dissipating holes spaced apart from each other along the length of the curved surface portion are formed in the curved surface portion so as to communicate with the first air flow path. delete The method according to claim 1,
Wherein the plurality of heat-
A plurality of first holes arranged at one end of the curved surface portion near the discharge hole and formed in a first size,
A plurality of second holes arranged at the other end of the curved surface portion and having a second size smaller than the first size,
And a plurality of third holes disposed between the plurality of first holes and the plurality of second holes and formed in a third size smaller than the first size and larger than the second size. The method according to claim 1,
Wherein the plurality of heat dissipation holes are formed to be gradually smaller in size away from the discharge holes. The method according to claim 1,
Wherein the discharge hole is formed to be offset from one end in the longitudinal direction of the cover, and discharges air to one end in the longitudinal direction of the first air passage. The method of claim 5,
Wherein the surface of the cover facing the longitudinal direction of the first air passage among the surfaces defining the discharge hole is formed as an inclined surface. The method according to claim 1,
The cover
A first cover having an opening at one side thereof and an opening through which the air blown from the heat radiating fan flows is formed on the bottom surface of the heat sink,
A second cover which covers the transmission coil part and the heat sink and is coupled to the first cover, the discharge hole is formed, and the seating pad is seated;
And a third cover coupled to the other side of the first cover, wherein the heat radiating fan is disposed inside and facing the inflow port, and a suction port through which air is sucked is formed on a bottom surface facing the heat radiating fan,
Wherein the third cover is formed with a second air passage communicating with the inlet,
And the second cover is formed with a third air passage for connecting the second air passage and the discharge hole. The method of claim 7,
Wherein the second cover includes an upper surface portion disposed on the upper side of the first cover and a side surface portion disposed on the side surface of the first cover,
And the third air passage is formed in the side portion.

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