CN217159320U

CN217159320U - Wireless charging device

Info

Publication number: CN217159320U
Application number: CN202220315184.0U
Authority: CN
Inventors: 黄睿斌; 魏斌; 陈明秋; 李燕辉; 黄志强
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Jianjun Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-08-09
Anticipated expiration: 2032-02-16

Abstract

The embodiment of the application provides a wireless charging device, which comprises a housin, the wireless subassembly that fills, support frame and turbofan, casing top surface arch is provided with the bellying that corresponds with the wireless subassembly that fills, a plurality of louvres have been seted up to the top surface of bellying, it is formed with first cavity to fill between subassembly and the bellying wirelessly, be formed with the second cavity between support frame and the wireless subassembly that fills, be formed with the third cavity between support frame and the casing bottom surface, turbofan installs in support frame bottom and turbofan's air inlet side and second cavity intercommunication, first air intake has been seted up on the lateral wall of bellying, the second air intake has been seted up on the outlying casing top surface of bellying, the air outlet has been seted up on the lateral wall of casing. This wireless charging device can guide the air current to carry out the heat exchange heat dissipation to the electronic equipment of casing top surface, the inside wireless top surface and the bottom surface of filling the subassembly of casing, and the radiating rate is fast, and is effectual, and the noise is little, can effectively improve the speed of charging, and then improves user's use and experience.

Description

Wireless charging device

Technical Field

The application relates to the technical field of electronic equipment accessories, in particular to a wireless charging device.

Background

Along with the development of wireless charging technology, wireless charging gradually enters people's daily life. At present, the wireless charging technology is mainly an electromagnetic induction technology and an electromagnetic resonance technology, the conversion efficiency of the wireless charging in the prior art is lower than 80%, and the rest is converted into heat. With the use of high-power wireless quick charging, the heating value of the wireless charger and the electronic equipment is larger. If the heat cannot be effectively conducted out, the temperature of the components and the electronic equipment of the wireless charger is necessarily increased, and therefore the charging efficiency is affected.

At present, the heat dissipation mode of the wireless charging device in the prior art usually adopts a semiconductor to cooperate with a fan for heat dissipation, and the heat dissipation mode has high cost, high design requirement on an air duct, complex structure and higher noise.

Disclosure of Invention

For solving the technical problem that exists now, this application provides a simple structure, radiating effect good just wireless charging device.

In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

the embodiment of the application provides a wireless charging device, which comprises a shell, wherein a wireless charging component, a support frame and a turbofan are sequentially arranged in the shell from top to bottom, a protruding part corresponding to the wireless charging component is arranged on the protruding part of the top surface of the shell, a plurality of heat dissipation holes are formed in the top surface of the protruding part, a first cavity is formed between the wireless charging component and the protruding part, a second cavity is formed between the support frame and the wireless charging component, a third cavity is formed between the support frame and the bottom surface of the shell, the turbofan is arranged at the bottom of the support frame, the air inlet side of the turbofan is communicated with the second cavity, a first air inlet communicated with the first cavity is formed in the side wall of the protruding part, and a second air inlet communicated with the second cavity is formed in the top surface of the shell at the periphery of the protruding part, and an air outlet communicated with the third cavity is formed in the side wall of the shell.

In one embodiment, the support frame is provided with an air hole, the turbofan is arranged on the bottom surface of the support frame in a manner of covering the air hole, and the air inlet side of the turbofan is communicated with the second cavity through the air hole.

In one embodiment, a sealing gasket is arranged between the edge of the support frame and the inner side wall of the shell.

In one embodiment, the first air inlet has a plurality of openings spaced apart from each other in the circumferential direction on the side wall of the protruding portion, the second air inlet has a plurality of openings spaced apart from each other in the circumferential direction on the top surface of the housing at the periphery of the protruding portion, and the air outlet has a plurality of openings circumferentially arranged on the side wall of the housing.

In one embodiment, the wireless charging assembly is erected on the support frame, a plurality of frame plates are arranged on the support frame along the circumferential array, the wireless charging assembly comprises a charging coil and a magnetism isolating sheet, the bottom surface of the magnetism isolating sheet is fixedly connected with the frame plates, and the charging coil is arranged on the magnetism isolating sheet.

In one embodiment, a through hole communicating the first cavity and the second cavity is formed in the center of the magnetic separation sheet.

In one embodiment, the wireless charging device further includes a magnetic attraction component, the magnetic attraction component is disposed on the periphery of the wireless charging component, and the magnetic attraction component is disposed corresponding to the protrusion.

In one embodiment, the magnetic attraction component comprises a metal ring and a magnetic ring;

a first vertical plate and a second vertical plate are oppositely arranged on each frame plate, and the metal ring and the magnet ring are sequentially arranged between the first vertical plate and the second vertical plate on each frame plate from bottom to top; or the edge of the magnetic separation sheet is convexly provided with a flange matched with the metal ring, so that the metal ring and the magnet ring are sequentially sleeved on the flange from bottom to top.

In one embodiment, the bottom surface of the protrusion is provided with a plurality of backing plates corresponding to the magnet ring, and each backing plate abuts against the magnet ring.

In one embodiment, the magnet ring is provided with a breaking part in a breaking way.

The wireless charging device at least has the following beneficial effects: the utility model provides a wireless charging device passes through the design of bellying, first cavity, second cavity and third cavity structure to and the design of air intake and air outlet position, can guide the air current of air intake to carry out the heat exchange heat dissipation to the cell-phone of bellying top surface, the inside top surface and the bottom surface of wireless subassembly that fills of casing, discharge by the air outlet through turbofan at last. Compared with the existing heat dissipation method of combining a semiconductor with a fan, the wireless charging device with the structure only adopts a single fan for heat dissipation, has the advantages of low cost, simple structure, high heat dissipation speed and low noise, can effectively improve the charging speed, and further improves the use experience of users.

Drawings

Fig. 1 is a schematic perspective view of a wireless charging device according to an embodiment of the present application;

fig. 2 is a perspective cross-sectional view of the wireless charging device of fig. 1;

fig. 3 is an exploded view of the wireless charging device of fig. 1 in one direction;

fig. 4 is an exploded view of the wireless charging device of fig. 1 in another direction;

FIG. 5 is an enlarged view taken at A in FIG. 2;

FIG. 6 is a schematic perspective view of the supporting frame in FIG. 3;

fig. 7 is a schematic perspective view of a portion of the housing in fig. 3.

The elements in the figures are numbered as follows: a wireless charging device 100; a housing 10; a second air inlet 11; an air outlet 12; a boss 13; a first air inlet 131; heat dissipation holes 132; a backing plate 14; a cordless charging assembly 20; a charging coil 21; a magnetism isolating sheet 22; a through-hole 221; a support frame 30; a frame plate 31; a first upright plate 32; a second upright plate 33; the air holes 34; a turbo fan 40; an air inlet side 41; an air-out side 42; a seal 50; a first cavity 60; a second chamber 70; a third cavity 80; a magnetic attraction assembly 90; a magnet ring 91; a break-off portion 911; a ferrule 92.

Detailed Description

The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of implementations of the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present application provides a wireless charging device 100, wherein the wireless charging device 100 can wirelessly charge an electronic device through electromagnetic induction or electromagnetic resonance technology. The electronic device is, for example, a mobile phone, a tablet computer, etc., and the present application takes a mobile phone as an example for specific description.

Referring to fig. 1 to 4, the wireless charging device 100 includes a housing 10, the housing 10 of the embodiment is a cylindrical structure, a cavity is formed in the housing 10, and in other embodiments, the housing 10 may be designed in other shapes, which is not limited herein. The wireless charging assembly 20, the supporting frame 30 and the turbofan 40 are sequentially arranged in the casing 10 from top to bottom, the protruding boss 13 corresponding to the wireless charging assembly 20 is arranged on the top surface of the casing 10, and a plurality of heat dissipation holes 132 are formed in the top surface of the boss 13. The wireless charging assembly 20 is mounted on the supporting frame 30, so that a first cavity 60 is formed between the wireless charging assembly 20 and the top surface of the protruding portion 13, a second cavity 70 is formed between the supporting frame 30 and the wireless charging assembly 20, and a third cavity 80 is formed between the supporting frame 30 and the bottom surface of the housing 10. The first cavity 60 is communicated with the second cavity 70, and the housing 10 is provided with a first air inlet 131 communicated with the first cavity 60 and a second air inlet 11 communicated with the second cavity 70. The turbofan 40 is mounted at the bottom of the supporting frame 30, the turbofan 40 has an air inlet side 41 and an air outlet side 42, the air inlet side 41 of the turbofan 40 is communicated with the second cavity 70, the turbofan 40 is located in the third cavity 80, the air outlet side 42 of the turbofan 40 is communicated with the third cavity 80, and the housing 10 is provided with an air outlet 12 communicated with the third cavity 80.

When the mobile phone needs to be charged wirelessly, the mobile phone can be placed on the top surface of the protruding portion 13, and the mobile phone is matched with the wireless charging assembly 20 through the built-in receiving coil to charge wirelessly. Wireless subassembly 20 that fills produces a large amount of heats in the charging process, the built-in receiving coil of cell-phone produces the heat equally and transmits to the top surface of bellying 13, the air current that turbofan 40 work produced flows into first cavity 60 by the air current of first air intake 131 in, through setting up a plurality of louvres 132, can take away the heat of bellying 13 and cell-phone and the one side of bellying 13 laminating, and then reduce the heat of receiving coil in the cell-phone, improve charging efficiency, the air current of first cavity 60 carries out the heat exchange heat dissipation to the top surface of wireless subassembly 20 that fills simultaneously, the air current of flowing into second cavity 70 by second air intake 11 can carry out the heat exchange heat dissipation to the bottom surface of wireless subassembly 20 that fills, and then discharge by air outlet 12 through turbofan 40. Compared with the existing heat dissipation method of combining a semiconductor and a fan, the wireless charging device 100 with the structure only adopts a single fan for heat dissipation, is low in cost, simple in structure, high in heat dissipation speed and low in noise, can effectively improve the charging speed, and further improves the use experience of users.

More specifically, in the present embodiment, the supporting frame 30 is provided with the air holes 34, the turbofan 40 can be mounted on the bottom surface of the supporting frame 30 by means of screw connection, and the turbofan 40 is disposed to cover the air holes 34, so that the air inlet side 41 of the turbofan 40 can be communicated with the second cavity 70 through the air holes 34, and the air outlet side 42 of the turbofan 40 is communicated with the third cavity 80. In this way, the airflow of the turbofan 40 dissipates heat to the devices in the first cavity 60 and the second cavity 70, and is then exhausted from the air outlet 12 on the side of the housing 10 through the air outlet side 42 of the turbofan 40, thereby forming a circulation.

Preferably, a sealing gasket 50 is provided between the edge of the supporting frame 30 and the inner sidewall of the housing 10. The sealing gasket 50 can be made of a silica gel pad or foam, and the sealing gasket 50 can be adhered to the edge of the support frame 30 through glue, so that the second cavity 70 is not communicated with the third cavity 80, and the air flow flowing into the air inlet is prevented from directly flowing into the third cavity 80 and being discharged from the gap between the edge of the support frame 30 and the shell 10, and the loss of wind power is caused.

Referring to fig. 1, the first air inlet 131 of the present embodiment has a plurality of first air inlets 131, and the plurality of first air inlets 131 are circumferentially spaced apart from each other and disposed on the sidewall of the protruding portion 13; the second air inlets 11 are provided with a plurality of second air inlets 11 which are arranged on the top surface of the shell 10 at the periphery of the bulge 13 at intervals along the circumferential direction; the air outlet 12 has a plurality of air outlets 12, and the plurality of air outlets 12 are arranged on the side wall of the housing 10 along the circumferential direction. This setting makes the air current of first air intake 131 and second air intake 11 directly get into first cavity 60 and second cavity 70, and turbofan 40 exhaust air current is direct to be discharged by air outlet 12, can increase the heat dissipation air current velocity of flow, improves heat transfer efficiency, effectively reduces the noise that the air current produced simultaneously.

Referring to fig. 3 and 6, in order to dissipate heat from the bottom surface of the wireless charging assembly 20, the wireless charging assembly 20 is mounted on the supporting frame 30, such that a space exists between the wireless charging assembly 20 and the supporting frame 30 to form a second cavity 70. Specifically, the supporting frame 30 is fixedly connected, for example, connected with the bottom of the housing through screws, a plurality of shelf plates 31 are arranged on the supporting frame 30 along the circumferential direction, the number of the shelf plates 31 may be two or more, and four shelf plates 31 are arranged in this embodiment. The shelf 31 is fixedly disposed, for example, fixed to the top surface of the supporting frame 30 by screws, and the cordless charging assembly 20 is mounted on the shelf 31. Wireless subassembly 20 that fills includes charging coil 21 and magnetism piece 22 that separates, and charging coil 21 and magnetism piece 22 that separate are the circular plate structure, and magnetism piece 22's bottom surface can be through mode and a plurality of frame plate 31 fixed connection of pasting, and charging coil 21 installs on magnetism piece 22 that separates. The frame plate 31 has a certain thickness, so that a second cavity 70 can be formed between the magnetism isolating sheet 22 and the supporting frame 30.

Preferably, the wireless charging device 100 of the present embodiment further includes a magnetic attraction component 90, the magnetic attraction component 90 is disposed at the periphery of the wireless charging component 20, and the magnetic attraction component 90 is disposed corresponding to the protrusion 13. The magnetic attraction component 90 can magnetically attract a magnet array built in the mobile phone to fix the mobile phone on the wireless charging device 100.

More specifically, the magnetic assembly 90 includes a metal ring 92 and a magnet ring 91, and the metal ring 92 and the magnet ring 91 are in a circular ring structure. In this embodiment, each frame plate 31 is provided with a first vertical plate 32 and a second vertical plate 33, which are opposite to each other, and the metal ring 92 and the magnet ring 91 are sequentially installed between the first vertical plate 32 and the second vertical plate 33 on each frame plate 31 from bottom to top, so that the magnetic attraction assembly 90 is sleeved on the periphery of the wireless charging assembly 20 and is separated from the wireless charging assembly 20. In another embodiment, the magnetism isolating sheet 22 may be concavely provided with a groove matching with the charging coil 21 and a flange matching with the metal ring 92, the charging coil 21 is disposed in the groove, and the metal ring 92 and the magnet ring 91 are sequentially sleeved on the flange from bottom to top.

Preferably, the metal ring 92 of the present embodiment may be fixed between the first vertical plate 32 and the second vertical plate 33 in an adhesion manner, the magnet ring 91 is adsorbed on the metal ring 92 and is clamped between the first vertical plate 32 and the second vertical plate 33 for fixing, and the magnet ring 91 is disposed corresponding to the protruding portion 13 and is adapted to a magnet array in the mobile phone, so that the mobile phone can be quickly adsorbed and fixed on the wireless charging device 100 by the magnet ring 91, and an accurate positioning effect of the mobile phone is achieved; the charging coil 21 can be a bare copper coil with good electrical conductivity and thermal conductivity, the charging coil 21 is electrified with an external power supply to enable the charging coil 21 to generate a magnetic field, and a receiving coil in the mobile phone generates a certain current through electromagnetic induction, so that electric energy can be transferred from the charging coil 21 to the mobile phone for charging; the magnetism isolating sheet 22 can enhance the magnetic field intensity of the charging coil 21, plays a role in magnetic convergence, and ensures the charging effect.

In this embodiment, through-hole 221 has been seted up at the center of magnetism isolating sheet 22 to make first cavity 60 and second cavity 70 communicate, simultaneously wind all around can evenly pass and get into second cavity 70 behind the first cavity 60, make the heat dissipation of the one side of cell-phone and the laminating of bellying 13 and the top surface of charging coil 21 abundant, can not take place the too high condition of local heat, guarantee the radiating effect.

Referring to fig. 4 and 7, the bottom surface of the protruding portion 13 is provided with a plurality of backing plates 14 corresponding to the magnet ring 91, the number of the backing plates 14 in this embodiment is four, and each backing plate 14 abuts against the magnet ring 91, so that the magnet ring 91 is firmer, and when the wireless charging device 100 is turned over, the magnet ring 91 does not separate from between the first vertical plate 32 and the second vertical plate 33. Meanwhile, the backing plate 14 can prevent the bulge 13 from collapsing, so that the gap between the magnet ring 91 and the bulge 13 is stable, and the airflow flowing in from the first air inlet 131 can flow to the top surface of the charging coil 21 from the gap between the magnet ring 91 and the bulge 13 for heat dissipation. It should be noted that the thickness of the backing plate 14 is relatively thin, and the magnetic attraction effect between the magnet ring 91 and the magnet array built in the mobile phone is negligible.

In this embodiment, the magnet ring 91 may be provided with the fracture portion 911 in a disconnected manner, so that the airflow flowing into the first air inlet 131 may also flow into the charging coil 21 from the fracture portion 911 in addition to flowing into the top surface of the charging coil 21 through the gap between the magnet ring 91 and the protrusion 13, and further the airflow flow rate is increased, and the heat dissipation efficiency is improved.

When the wireless charging device 100 is used, a mobile phone is placed on the surface of the protruding portion 13, the magnet ring 91 adsorbs the mobile phone, the charging coil 21 wirelessly charges the mobile phone, and the turbofan 40 starts to rotate. Referring to fig. 2, the arrow direction in the figure is the flowing direction of the gas, the airflow generated by the turbofan 40 flows into the first cavity 60 from the first air inlet 131, and exchanges heat with the bottom of the mobile phone through the heat dissipation hole 132 to dissipate heat of the mobile phone, and meanwhile, the airflow flows through the surface of the charging coil 21 to dissipate heat of the charging coil 21, and further flows into the second cavity 70 from the through hole 221 on the magnetic shield 22; the air flow flowing into the second cavity 70 from the second air inlet 11 and the through hole 221 of the magnetic separation sheet 22 exchanges heat with the bottom of the magnetic separation sheet 22 to dissipate heat of the magnetic separation sheet 22 and the charging coil 21, and then flows to the third cavity 80 through the turbofan 40 and is discharged from the air outlet 12.

The wireless charging device 100 of the present application has at least the following beneficial effects:

(1) the first cavity 60, the second cavity 70 and the third cavity 80 are formed by the support frame 30 and the special structure of the shell, so that the upper surface and the lower surface of the wireless charging assembly 20 and the bottom surface of the mobile phone can be sufficiently radiated, the structure is simple, the radiating effect is good, and the charging efficiency is effectively improved;

(2) by arranging the protruding part 13 and the positions of the first air inlet 131 and the second air inlet 11, the magnetic attraction effect of the mobile phone and the protruding part 13 is ensured, the flow velocity of heat dissipation airflow is enhanced, and the airflow noise is reduced;

(3) through the design of structures such as support frame 30, backing plate 14, the inside overall stability of reinforcing wireless charging device 100, the structure is firm, reasonable in design.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A wireless charging device is characterized by comprising a shell, wherein a wireless charging component, a support frame and a turbofan are sequentially arranged in the shell from top to bottom, a protruding portion corresponding to the wireless charging component is convexly arranged on the top surface of the shell, a plurality of heat dissipation holes are formed in the top surface of the protruding portion, a first cavity is formed between the wireless charging component and the protruding portion, a second cavity is formed between the support frame and the wireless charging component, a third cavity is formed between the support frame and the bottom surface of the shell, the turbofan is arranged at the bottom of the support frame, the air inlet side of the turbofan is communicated with the second cavity, a first air inlet communicated with the first cavity is formed in the side wall of the protruding portion, and a second air inlet communicated with the second cavity is formed in the top surface of the shell, which is arranged at the periphery of the protruding portion, and an air outlet communicated with the third cavity is formed in the side wall of the shell.

2. The wireless charging device of claim 1, wherein the supporting frame is provided with an air hole, the turbofan is mounted on the bottom surface of the supporting frame to cover the air hole, and an air inlet side of the turbofan is communicated with the second cavity through the air hole.

3. The wireless charging device of claim 2, wherein a gasket is disposed between an edge of the support frame and an inner side wall of the housing.

4. The wireless charging device according to claim 3, wherein the first air inlet has a plurality of openings spaced apart from each other in the circumferential direction on the side wall of the protruding portion, the second air inlet has a plurality of openings spaced apart from each other in the circumferential direction on the top surface of the housing at the periphery of the protruding portion, and the air outlet has a plurality of openings spaced apart from each other in the circumferential direction on the side wall of the housing.

5. The wireless charging device according to claim 4, wherein the wireless charging assembly is erected on the support frame, a plurality of frame plates are arranged on the support frame along a circumferential array, the wireless charging assembly comprises a charging coil and a magnetism isolating sheet, the bottom surface of the magnetism isolating sheet is fixedly connected with the plurality of frame plates, and the charging coil is arranged on the magnetism isolating sheet.

6. The wireless charging device of claim 5, wherein a through hole communicating the first cavity and the second cavity is formed at the center of the magnetic shielding sheet.

7. The wireless charging device of claim 5, further comprising a magnetic attraction component disposed at a periphery of the wireless charging component and corresponding to the protrusion.

8. The wireless charging device of claim 7, wherein the magnetically attractive assembly comprises a metal ring and a magnetic ring;

9. The wireless charging device according to claim 8, wherein a bottom surface of the boss portion is provided with a plurality of backing plates corresponding to the magnet ring, each of the backing plates abutting against the magnet ring.

10. The wireless charging device according to claim 8, wherein the magnet ring is provided with a cut-off portion in a broken state.