CN217282249U

CN217282249U - Wireless charger

Info

Publication number: CN217282249U
Application number: CN202123234884.1U
Authority: CN
Inventors: 安贵龙; 黄立勇
Original assignee: Dongguan Leizun Electronic Technology Co ltd
Current assignee: Dongguan Leizun Electronic Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-08-23
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to the technical field of wireless charging, and discloses a wireless charger, which comprises a shell, a semiconductor refrigeration piece, a heat-discharging piece and a transmitting coil; an accommodating space is arranged in the shell, and a hollow hole communicated with the accommodating space is formed in the front side of the shell; the semiconductor refrigerating sheet comprises a refrigerating plate, refrigerating crystal grains and a heating plate which are sequentially arranged from front to back, the refrigerating plate is fixed on the front side of the shell, the refrigerating crystal grains and the heating plate penetrate through the hollow holes and are at least partially positioned in the accommodating space, and the area of the refrigerating plate is larger than that of the heating plate; the heat discharging piece is positioned in the accommodating space and is connected to the rear side of the heating plate in a heat conduction manner; the transmitting coil is fixed on the front side of the shell and arranged side by side with the refrigeration crystal grains along the transverse direction, and the transmitting coil is connected to the rear side of the refrigeration plate in a heat conduction mode. Through the face area that increases the refrigeration board, utilize the refrigeration board to cool down for transmitting coil, even design wireless charger frivolous, also can guarantee that transmitting coil has sufficient radiating effect.

Description

Wireless charger

Technical Field

The utility model relates to a wireless charging technology field especially relates to a wireless charger.

Background

At present, a wireless charger with a semiconductor radiator appears on the market, the wireless charger can cool a mobile phone while wirelessly charging the mobile phone, some manufacturers can stack elements as much as possible in order to design the wireless charger as thin as possible, however, an unreasonable stacking mode easily causes poor heat dissipation effect of the elements inside the wireless charger, especially a transmitting coil for charging the mobile phone, and after the wireless charger is used for a long time, the charging effect is easily deteriorated due to the fact that the self temperature of the transmitting coil is high, and therefore charging of the mobile phone is affected.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the charging effect of the transmitting coil becomes poor after long-term use.

In order to solve the technical problem, the utility model provides a wireless charger, which comprises a shell, a semiconductor refrigeration piece, a heat-discharging piece and a transmitting coil; an accommodating space is arranged in the shell, and a hollow hole communicated with the accommodating space is formed in the front side of the shell; the semiconductor refrigeration piece comprises a refrigeration plate, refrigeration crystal grains and a heating plate which are sequentially arranged from front to back, the refrigeration plate is fixed on the front side of the shell, the refrigeration crystal grains and the heating plate penetrate through the hollow holes and are at least partially positioned in the accommodating space, and the area of the refrigeration plate is larger than that of the heating plate; the heat discharging piece is positioned in the accommodating space and is connected to the rear side of the heating plate in a heat conduction manner; the transmitting coil is fixed on the front side of the shell and arranged side by side with the refrigeration crystal grains in the transverse direction, and the transmitting coil is connected to the rear side of the refrigeration plate in a heat conduction mode.

Further, the casing includes epitheca and inferior valve, the epitheca install in the front side of inferior valve, the epitheca with inject between the inferior valve and form the accommodation space, transmitting coil with the refrigeration board install in the front side of epitheca, the fretwork hole is seted up in on the epitheca.

Further, the front side of the refrigeration plate protrudes out of the front side of the shell.

Further, still include the air-blower, the air-blower install in on the casing, and be located in the accommodation space and corresponding to transmitting coil's rear side position, air intake and air outlet have been seted up on the casing, first air intake and air exit have been seted up to the air-blower.

Furthermore, the air inlet is arranged at the rear side of the shell, the first air suction opening corresponds to the air inlet and is arranged at the rear side of the air blower, the air outlet faces towards the heat exhaust part, the air outlet is arranged at the position, corresponding to the air outlet, of the shell, and the heat exhaust part is located between the air outlet and the air outlet.

Furthermore, a plurality of radiating fins are arranged on the heat discharging piece at intervals, and the direction of the air blower towards the air outlet is the same as the length direction of the radiating fins.

Furthermore, the air blower further comprises a circuit board, wherein the circuit board is installed on the shell and is positioned in the accommodating space corresponding to the rear side of the transmitting coil, the transmitting coil is positioned on the front side of the air blower, and a second air suction opening is formed in one side, facing the circuit board, of the air blower.

Further, the refrigerator comprises a thermistor, the thermistor is electrically connected with the circuit board, the refrigeration crystal grains are arranged on the refrigeration plate at intervals to form an array, the side part of the array is concavely provided with an abdicating space, the thermistor is positioned in the abdicating space, and the thermistor is thermally conducted with the refrigeration plate.

Further, the housing is made of a heat insulating material, and the refrigeration plate and the heat discharging member are separated by the housing.

Further, heat dissipation spare with be equipped with heat conduction silica gel between the heating board, heat dissipation spare passes through heat conduction silica gel with heat the board heat-conduction.

The embodiment of the utility model provides a wireless charger compares with prior art, and its beneficial effect lies in: through the face area that increases the refrigeration board, utilize the refrigeration board for the transmitting coil cooling, even design wireless charger frivolous, also can guarantee that transmitting coil has sufficient radiating effect to avoid long-time practical influence to take place the charging performance of coil.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a bottom view of an embodiment of the present invention;

fig. 3 is a cross-sectional view of an embodiment of the present invention;

FIG. 4 is a schematic diagram of the position of the transmit coil;

fig. 5 is a schematic view of the internal structure of an embodiment of the present invention;

FIG. 6 is a bottom schematic view of a blower;

in the figure, 1, a housing; 11. a charging region; 12. an air outlet; 13. an air inlet; 14. an upper shell; 141. hollowing out holes; 15. a lower case; 2. a semiconductor refrigeration sheet; 21. a refrigeration plate; 22. heating a plate; 23. refrigerating the crystal grains; 231. a space of abdicating; 3. a heat removal member; 31. heat conducting silica gel; 32. heat dissipation fins; 4. a transmitting coil; 5. a blower; 51. a second air inlet; 52. a first air suction port; 6. a circuit board; 7. a thermistor.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like are used in the present invention as indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model provides a wireless charger of preferred embodiment, it includes casing 1, semiconductor refrigeration piece 2, heat extraction piece 3 and transmitting coil 4 dress are in on the casing 1, when the cell-phone was put on the front side of casing 1, semiconductor refrigeration piece 2 can be to cell-phone and transmitting coil 4 cooling, and transmitting coil 4 can be for the wireless charging of cell-phone.

As shown in fig. 1-4, an accommodating space is provided in the casing 1, a hollow hole 141 communicated with the accommodating space is provided on the front side of the casing 1, the semiconductor refrigerating sheet 2 includes a refrigerating plate 21, a refrigerating crystal grain 23 and a heating plate 22 which are sequentially arranged from the front to the back, the refrigerating plate 21 and the heating plate 22 are connected through the refrigerating crystal grain 23, and when the semiconductor refrigerating sheet 2 works, heat at the refrigerating plate 21 is transferred to the heating plate 22, so that the temperature at the refrigerating plate 21 is lowered. The refrigeration crystal grain 23 and the heating plate 22 pass through the hollow hole 141, and at least part of the heating plate 22 is located in the accommodating space. When the mobile phone is attached to the refrigerating plate 21, the refrigerating plate 21 can cool the mobile phone while the mobile phone is charged. The plate area of the refrigerating plate 21 is larger than that of the heating plate 22, the plate area of the refrigerating plate 21 is increased, the refrigerating plate 21 can be directly contacted with a mobile phone to be cooled, and compared with the existing structure of the semiconductor refrigerating sheet 2, the refrigerating area of the mobile phone is enlarged without increasing a large-area heat-conducting medium between the refrigerating plate 21 and the mobile phone, materials are saved, and the shell 1 is integrally lighter and thinner.

As shown in fig. 1 to 5, the heat discharging member 3 is located in the accommodating space and is connected to the rear side of the heating plate 22 in a heat conducting manner, and the heat discharging member 3 is used for absorbing and discharging heat of the heating plate 22, so as to ensure that the semiconductor cooling plate 2 can continuously work. The transmitting coil 4 is fixed on the front side of the housing 1 and arranged side by side with the refrigeration crystal grain 23 along the transverse direction, the transmitting coil 4 is connected to the rear side of the refrigeration plate 21 in a heat conducting manner, in this embodiment, the transmitting coil 4 is directly contacted with the refrigeration plate 21, and in other embodiments, the transmitting coil 4 can be in heat conduction with the refrigeration plate 21 through a heat conducting medium. Since the plate area of the cooling plate 21 is larger relative to the plate area of the heating plate 22, the cooling plate 21 has excess area not in contact with the cooling grains 23, which excess area can be used to make contact with the transmitting coil 4. The transmitting coil 4 can charge the mobile phone, and can also charge other devices allowing wireless charging besides the mobile phone.

As shown in fig. 1 to 5, the housing 1 includes an upper housing 14 and a lower housing 15, the upper housing 14 is located at the front side of the lower housing 15, the accommodating space is defined between the upper housing 14 and the lower housing 15, the transmitting coil 4 and the refrigeration plate 21 are installed at the front side of the upper housing 14, the hollow hole 141 is opened in the upper housing 14, and the heat dissipating member 3 is located in the lower housing 15.

As shown in fig. 1, in this embodiment, the refrigeration plate 21 protrudes out of the housing 1 to be conveniently contacted with the mobile phone, and since the lens of the mobile phone generally protrudes out of the back of the mobile phone, in order to better cool the mobile phone in a larger area, the back of the mobile phone can be placed on the refrigeration plate 21, and the lens of the mobile phone is placed outside the refrigeration plate 21, besides the mobile phone, and is also conveniently contacted with the electronic device with an uneven back. In other embodiments, the surface of the refrigeration plate 21 may be flush with the surface of the housing 1, so that the housing 1 is more beautiful.

As shown in fig. 1-5, the wireless charger further includes an air blower 5, the air blower 5 is mounted on the housing 1 and located in the accommodating space and corresponding to the rear position of the transmitting coil 4, the housing 1 is provided with an air outlet 12 and an air inlet 13, and the air outlet 12 and the air blower 5 are provided with a first air inlet 52 and an air outlet. The air inlet 13 is arranged at the rear side of the shell, the first air suction opening 52 corresponds to the air inlet 13 and is arranged at the rear side of the air blower 5, the air outlet faces the heat discharging piece 3, the air outlet 12 is arranged on the shell 1 and is opposite to the position of the air outlet, the heat discharging piece 3 is positioned between the air outlet and the air outlet 12, the air blower 5 and the heat discharging piece 3 are positioned on the same straight line, and when the air blower 5 works, airflow flows in the shell 1 as straight line as possible, so that the heat of the heat discharging piece 3 is more smooth. A plurality of heat dissipation fins 32 are arranged on the heat discharging member 3 at intervals, the direction of the blower 5 towards the air outlet 12 is the same as the length direction of the heat dissipation fins 32, and when the blower 5 blows air towards the heat discharging member 3, the airflow can flow along the heat dissipation fins 32, so that the ventilation performance inside the shell 1 is improved.

As shown in fig. 1-6, the wireless charger further includes a circuit board 6, the circuit board 6 is mounted on the housing 1 and located at the rear side of the accommodating space corresponding to the transmitting coil 4, the circuit board 6 is electrically connected to the transmitting coil 4, and the upper case 14 may be provided with a wire hole for a wire of the circuit board 6 to pass through and be connected to the transmitting coil 4. The transmitting coil 4 is separated from the circuit board 6 by the upper case 14. Transmitting coil 4 is located the front side of air-blower 5, circuit board 6 is located one side of heat extraction piece 3, just air-blower 5 with circuit board 6 homonymy, air-blower 5 orientation second inlet scoop 51 has been seted up to one side of circuit board 6, and when air-blower 5 during operation, air-blower 5 can pass through second inlet scoop 51 is past circuit board 6 is bloied to take away the heat that circuit board 6 during operation produced. The circuit board 6 can be externally connected with a power line through a USB connector, and an external power supply is used for supplying power to the circuit board 6. The wireless charger further comprises a thermistor 7, the thermistor 7 is electrically connected with the circuit board 6, the refrigeration crystal grains 23 are arranged on the refrigeration plate 21 at intervals to form an array, an abdicating space 231 is concavely arranged on the side of the array, the thermistor 7 is located in the abdicating space 231, and the thermistor 7 is in contact with the refrigeration plate 21 and conducts heat. Through setting up thermistor 7 between heating panel 22 and refrigeration board 21 to reduce thermistor 7's occupation space, set up thermistor 7 in the space 231 of stepping down in addition, can improve the accuracy of thermistor 7 testing result, thereby adjust the operating frequency of semiconductor refrigeration piece 2 according to the temperature of refrigeration board 21 more accurately.

As shown in fig. 2-4, the air blower 5, the circuit board 6 and the transmitting coil 4 are located on the same straight line, so that the length of the electric wire connected between the circuit board 6 and the transmitting coil 4 can be reduced, the space inside the housing 1 can be saved, the orientation of the contact surface between the cooling plate 21 and the mobile phone is taken as the upper direction, the transmitting coil 4 is located above the circuit board 6, the circuit board 6 is located above the air blower 5, the heat dissipating member 3 is located on one side of the air blower 5 in the horizontal direction, the cooling crystal grain 23 and the heating plate 22 are located directly above the heat dissipating member 3, and the cooling crystal grain 23 is located on one side of the transmitting coil 4 in the horizontal direction, by such design, the arrangement of each part inside the housing 1 can be compact, and the circuit board 6, the heat dissipating member 3 and the transmitting coil 4 which may generate heat have the corresponding air blower 5 and cooling panel for cooling, the internal space of the shell 1 is saved, so that the whole wireless charger is lighter and thinner, and the heat dissipation of each part is not influenced.

As shown in fig. 2-4, the housing 1 is made of heat insulating material, the cooling plate 21 is separated from the heat discharging member 3 by the housing 1, and when the blower 5 is operated, the heat generated by the heat discharging member 3 is separated by the upper casing 14, so that the cooling effect of the cooling plate 21 is not affected. Heat discharging piece 3 with be equipped with heat conduction silica gel 31 between the heating board 22, heat discharging piece 3 passes through heat conduction silica gel 31 with heating board 22 is heat-conducting, the heat of heating board 22 can pass through heat conduction silica gel 31 transmits on heat discharging piece 3.

As shown in fig. 1-3, in actual use, the utility model has two usage modes, the first is to use the casing 1 while being placed, so that the charging area 11 is located above the refrigerating plate 21, at this time, the mobile phone can be placed on the upper surface of the refrigerating plate 21 for charging and cooling, in order to better ventilate the air inlet 13, the bottom surface of the lower casing 15 is provided with protruding points (not shown in the figure) at four corners, the bottom surface of the lower casing 15 is raised, so that cold air can enter the air inlet 13; the second is to put casing 1 upside down and use, lets the cell-phone back up, sets up refrigeration board 21 down, third ventilation hole up again, covers refrigeration board 21 on the cell-phone back, makes the cell-phone be located charging area 11, cools down the cell-phone when the cell-phone charges.

As shown in fig. 1-6, the working process of the utility model is as follows: paste the cell-phone on refrigeration board 21, start transmitting coil 4 semiconductor refrigeration piece 2 with air-blower 5, transmitting coil 4 charge for the cell-phone, and the heat of refrigeration board 21 begins to transmit heat the heating board 22 heats on the heat transmission of board 22 reaches heat extraction piece 3, and refrigeration board 21 temperature drops, and the cell-phone temperature with refrigeration board 21 contact begins to descend, and under air-blower 5's drive, cold wind gets into casing 1 from air intake 13 in, reentrant air-blower 5 in, and the heat of near air absorption circuit board 6 of circuit board 6 passes through in second inlet scoop 51 gets into air-blower 5 again, and air-blower 5 blows cold wind to heat extraction piece 3, and cold wind absorbs the heat formation of heat extraction piece 3 and is hot-blast, and hot-blast is again discharged outside casing 1 from air outlet 12.

To sum up, the embodiment of the utility model provides a wireless charger, its board area through increasing refrigeration board 21 utilizes refrigeration board 21 for transmitting coil 4 cooling, even design wireless charger frivolous, also can guarantee that transmitting coil 4 has sufficient radiating effect to avoid long-time practical influence to take place the charging performance of coil.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims

1. A wireless charger, comprising:

the shell is internally provided with an accommodating space, and the front side of the shell is provided with a hollow hole communicated with the accommodating space;

the semiconductor refrigeration piece comprises a refrigeration plate, refrigeration crystal grains and a heating plate which are sequentially arranged from front to back, the refrigeration plate is fixed on the front side of the shell, the refrigeration crystal grains and the heating plate penetrate through the hollow holes and are at least partially positioned in the accommodating space, and the area of the refrigeration plate is larger than that of the heating plate;

the heat discharging piece is positioned in the accommodating space and is connected to the rear side of the heating plate in a heat conduction manner; and

the transmitting coil is fixed on the front side of the shell and arranged side by side with the refrigeration crystal grains in the transverse direction, and the transmitting coil is connected to the rear side of the refrigeration plate in a heat conduction mode.

2. The wireless charger of claim 1, wherein: the shell comprises an upper shell and a lower shell, the upper shell is installed on the front side of the lower shell, the upper shell and the lower shell are limited to form the accommodating space, the transmitting coil and the refrigerating plate are installed on the front side of the upper shell, and the hollow hole is formed in the upper shell.

3. The wireless charger of claim 1, wherein: the front side of the refrigeration plate protrudes out of the front side surface of the shell.

4. The wireless charger of claim 1, wherein: the air blower is installed on the shell and located in the containing space and corresponding to the rear side position of the transmitting coil, an air inlet and an air outlet are formed in the shell, and a first air suction opening and an air exhaust opening are formed in the air blower.

5. The wireless charger of claim 4, wherein: the air inlet is arranged at the rear side of the shell, the first air suction opening corresponds to the air inlet, the air outlet faces the heat exhaust part, the air outlet is arranged on the shell and opposite to the position of the air outlet, and the heat exhaust part is located between the air outlet and the air outlet.

6. The wireless charger of claim 4, wherein: the heat discharging piece is provided with a plurality of heat radiating fins at intervals, and the direction of the air blower facing the air outlet is the same as the length direction of the heat radiating fins.

7. The wireless charger of claim 4, wherein: the air blower further comprises a circuit board, the circuit board is installed on the shell and located in the containing space corresponding to the rear side of the transmitting coil, the transmitting coil is located on the front side of the air blower, and the air blower faces one side of the circuit board, and a second air suction opening is formed in the air blower.

8. The wireless charger of claim 7, wherein: the refrigerator is characterized by further comprising a thermistor, the thermistor is electrically connected with the circuit board, the refrigeration crystal grains are arranged on the refrigeration plate at intervals to form an array, a yielding space is concavely arranged on the side portion of the array, the thermistor is located in the yielding space, and the thermistor is thermally conductive with the refrigeration plate.

9. The wireless charger of claim 1, wherein: the shell is made of heat insulating materials, and the refrigeration plate and the heat exhausting piece are separated through the shell.

10. The wireless charger of claim 1, wherein: the heat discharging piece is arranged between the heating plate and the heat conducting silica gel, and the heat discharging piece is connected with the heating plate through the heat conducting silica gel.