CN113270922A

CN113270922A - Wireless charging equipment

Info

Publication number: CN113270922A
Application number: CN202110646055.XA
Authority: CN
Inventors: 李伟
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-17

Abstract

The present application discloses a wireless charging device, comprising a casing, a charging coil, a control module, a fan, and a semiconductor refrigerator; the casing has a first side wall, and a portion in the casing adjacent to the first side wall is provided There is an air duct, and the air duct communicates with the outside of the casing; the charging coil is arranged on the first side wall; the fan is arranged in the casing, and the fan is located on the side of the air duct one end; the semiconductor refrigerator has a cold end and a hot end, the cold end is adjacent to the charging coil, and the hot end is adjacent to the first side wall; the control module is arranged in the housing, the control The modules are respectively electrically connected with the charging coil, the fan and the semiconductor cooler.

Description

Wireless charging equipment

Technical Field

The application belongs to the technical field of charging equipment, and particularly relates to wireless charging equipment.

Background

In the related art, along with the high popularization of electronic products, the types of charging equipment equipped for the electronic products are more and more, and along with the continuous improvement of requirements of electric equipment on power supply quality, safety, reliability, convenience, instantaneity, special occasions, special geographic environments and the like, a contact type electric energy transmission mode cannot meet actual requirements more and more.

The wireless charging technology is a special power supply mode, does not need a power line, can be transmitted in the forms of electromagnetic waves or radio waves and the like, and then converts the electromagnetic wave energy into electric energy to finally realize wireless charging. The wireless charging equipment adopting the wireless charging technology design is very convenient in charging mode and carrying, so the development is very rapid, but the charging efficiency loss is higher in the process of charging products by the existing wireless charging equipment, the heat dissipation effect is not ideal, and the wireless charging equipment is to be further optimized.

Disclosure of Invention

The present application is directed to a wireless charging device that solves at least one of the problems of the background art.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a wireless charging equipment, includes:

the air duct is arranged in the shell and is adjacent to the first side wall, and the air duct is communicated with the outside of the shell;

a charging coil disposed at the first sidewall;

the fan is arranged in the shell and is positioned at one end of the air channel; a semiconductor refrigerator having a cold end and a hot end, the cold end being adjacent to the charging coil and the hot end being adjacent to the first sidewall;

the control module is arranged in the shell and is respectively and electrically connected with the charging coil, the fan and the semiconductor refrigerator.

In the embodiment of this application, through with the charging coil setting is in on the first lateral wall, make wireless charging equipment is when charging the electronic product, the distance between charging coil and the electronic product reduces greatly, has improved wireless charging equipment's charge efficiency. In addition, this application adopts semiconductor cooler to dispel the heat to the charging coil for the radiating efficiency is faster.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of a wireless charging device according to an embodiment of the application;

fig. 2 is a schematic diagram of an electronic product charged by a wireless charging device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a heat sink according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a heat sink according to an embodiment of the present application.

Reference numerals:

1-a shell; 11-a first side wall; 12-a second side wall; 13-an air duct; 2-a control module; 3-a charging coil; 4-a fan; 5-a semiconductor refrigerator; 6-a radiator; 61-heat dissipation wall; 62-radiating fins; 7-heat conducting soft cushion; 8-a protective film; 9-electronic products.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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; can be mechanically or electrically connected; 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.

A wireless charging apparatus according to an embodiment of the present application is described below with reference to fig. 1 to 4.

The wireless charging usually adopts an electromagnetic induction type, a primary coil is arranged on a wireless charger and used as a transmission end, a secondary coil is arranged in electronic equipment and used as a receiving end, and alternating current with certain frequency of the primary coil generates certain current in the secondary coil through electromagnetic induction, so that energy is transferred from the transmission end to the receiving end, and the wireless charging function is realized.

In the prior art, a charging module of a wireless charger is generally arranged inside a shell, and when the wireless charger is used for charging an electronic product, other components are further arranged between the charging module and the electronic product, so that the distance of the electronic product is long, and the charging efficiency is lost. In addition, the conventional wireless charger only performs air cooling heat dissipation through a fan, and the heat dissipation effect is very limited.

As shown in fig. 1 to 2, according to some embodiments of the present application, there is provided a wireless charging device including a housing 1, a charging coil 3, a control module 2, a fan 4, a semiconductor refrigerator 5; the shell 1 is provided with a first side wall 11, an air duct 13 is arranged in the shell 1 adjacent to the first side wall 11, and the air duct 13 is communicated with the outside of the shell 1; the charging coil 3 is arranged on the first side wall 11; the fan 4 is arranged in the shell 1, and the fan 4 is positioned at one end of the air channel 13; the semiconductor refrigerator 5 has a cold end adjacent to the charging coil 3 and a hot end adjacent to the first sidewall 11; the control module 2 is arranged in the shell 1, and the control module 2 is respectively electrically connected with the charging coil 3, the fan 4 and the semiconductor refrigerator 5.

Specifically, in this embodiment, set up charging coil 3 on first lateral wall 11, can expose charging coil 3 in casing 1, this kind of design's wireless charging device is when charging electronic product 9, as shown in fig. 2, can directly laminate electronic product 9 on charging coil 3, charging coil 3 with the distance between electronic product 9 compares in prior art and reduces greatly for electromagnetic conversion efficiency between the two improves, thereby has improved wireless charging device's charging efficiency.

When carrying out the during operation at charging coil 3, can produce the heat, if can not in time cool down, also can influence whole wireless charging equipment's charge efficiency. Close in casing 1 and set up wind channel 13 in first lateral wall 11 department, the one end in wind channel 13 is provided with fan 4, control module 2 starts charging coil 3 back, can start fan 4 simultaneously, wind channel 13 and casing 1's outside intercommunication, fan 4 can carry out the forced convection (the air flow direction can refer to the dotted line in fig. 2 and indicate) to the air in wind channel 13, give off the external environment with the heat in, the realization is to the cooling effect of first lateral wall 11 and charging coil 3, further promote charge efficiency. An air port may be disposed near the fan, and an air port of the air duct 13 communicating with the outside of the housing 1 may be disposed at the top end of the housing (as shown in fig. 1 to 2), or may be disposed at other positions, which may be specifically selected according to actual situations, and the present application is not limited thereto.

In the present embodiment, the charging coil 3 is disposed on the first sidewall 11, and there may be a plurality of arrangements. For example, can inlay charging coil 3 and establish on first lateral wall 11 for charging coil 3's surface and first lateral wall 11's surface are in the coplanar, have both reached the purpose that reduces the distance between electronic product 9 and the charging coil 3, can also save the design space of whole product. In addition, charging coil 3 can also be directly arranged on the outer surface of first side wall 11, and first side wall 11 can also play a supporting role for charging coil 3 when being as the radiating part, prevents that charging coil 3 from deforming when electronic product 9 is placed on charging coil 3.

The semiconductor cooler 5(TEC) is made by using the peltier effect of semiconductor materials, which is a phenomenon that when a direct current passes through a couple made of two semiconductor materials, one end of the TEC absorbs heat and the other end releases heat.

In the application, the cold end adjacent to the charging coil 3 can be that the charging coil 3 is directly contacted with the cold end, or the charging coil 3 is not directly contacted with the cold end, as long as the cooling effect can be achieved; similarly, the hot end adjacent to the first sidewall 11 may or may not be in direct contact with the first sidewall 11, as long as the heat transfer effect is achieved. Adopt semiconductor cooler 5's cold junction to cool down charging coil 3, the temperature direct transfer of hot junction is for first lateral wall 11, and the temperature of first lateral wall 11 can combine fan 4 to give off the external environment through wind channel 13 in, realizes directly realizing the cooling effect to charging coil 3. In addition, when charging, electronic product 9 can direct contact charging coil 3, and the heat that charging coil 3 produced also has some conduction to electronic product 9, when carrying out wireless battery charging outfit's structural design, can reserve the position of electronic product 9 at the cold junction of neighbouring semiconductor refrigerator 5, realizes the cooling effect to electronic product 9 simultaneously.

Adopt semiconductor cooler 5 to cool down charge coil 3 and electronic equipment, whole process noiselessness, no vibration and do not need the refrigerant, small, light in weight in addition easily carry out cold volume through control module 2 to it and adjust.

Alternatively, as shown in fig. 1 to 2, the charging coil 3 is disposed on the surface of the first side wall 11, and the semiconductor refrigerator 5 is sandwiched between the charging coil 3 and the first side wall 11.

Specifically, in this embodiment, charging coil 3 sets up on the surface of first lateral wall 11, press from both sides semiconductor refrigerator 5 and locate charging coil 3 with between the first lateral wall 11, semiconductor refrigerator 5's cold junction alright in order directly to laminate at charging coil 3's surface, the hot junction is directly laminated at first lateral wall 11's surface, can directly increase the area of contact between semiconductor refrigerator 5 and charging coil 3 and the first lateral wall 11 through this kind of structural design, heat conduction thermal efficiency has been improved, when carrying out high-power charging to electronic product 9, make semiconductor refrigerator 5's cold junction can cool down charging coil 3 more fast, the hot junction can be more fast with heat transfer for first lateral wall 11, the radiating effect is showing more.

Optionally, the charging coil 3 is electrically connected to the control module 2 through a circuit of the semiconductor refrigerator 5.

Specifically, when charging coil 3 sets up on first lateral wall 11, in order to prevent that the heat that charging coil 3 produced from transmitting for control module 2, influence control module 2's function, or because wireless charging device's structural feature, need set up control module 2 in the position of keeping away from charging coil 3, in order to make the inside circuit of wireless charging device simpler, can be with direct circuit switch-on with charging coil 3 through contact or other modes and semiconductor refrigerator 5, switch-on control module 2 with semiconductor refrigerator 5's circuit again, charging coil 3 is nearer with semiconductor refrigerator 5 distance itself, just, direct connecting circuit who switches on charging coil 3 to control module 2 has been saved, the inside design structure of product has been simplified, simultaneously can not influence the function of product again.

Optionally, as shown in fig. 1 to 3, the wireless charging device further includes a heat sink 6, the heat sink 6 has a heat dissipation wall 61 and heat dissipation fins 62 uniformly arranged on the heat dissipation wall 61, the heat dissipation wall 61 is in contact with the first side wall 11, the heat dissipation wall 61 and the second side wall 12 of the housing 1 form the air duct 13, and the heat dissipation fins 62 are located in the air duct 13.

Specifically, the heat sink 6 in this embodiment has a heat dissipation wall 61 directly contacting the first side wall 11, and the heat dissipation fins 62 are uniformly distributed on the heat dissipation wall 61, so that the heat dissipation area of the first side wall 11 can be increased by the whole structure. In addition, the temperature that is provided with charging coil 3 department on the first lateral wall 11 is higher, and the temperature that does not set up charging coil 3 is lower, and radiating fin 62 can also play the soaking effect, realizes carrying out the heat exchange fast with the air in wind channel 13 for the radiating rate. As shown in fig. 3, the heat dissipating wall 61 may be configured in a three-sided closed shape, and is connected to the second side wall 12 of the housing 1 to form an air duct 13, two ends of the heat sink 6 are open, one end of the heat sink is open for communicating with the outside of the housing 1, and the other end of the heat sink is configured to provide the fan 4, so that the structure of the heat sink 6 simplifies the structure of the housing 1 while achieving a quick heat dissipating effect.

Optionally, as shown in fig. 1 to 2 and 4, the wireless charging device further includes a heat sink 6, the heat sink 6 has a heat dissipation wall 61 and heat dissipation fins 62, the heat dissipation wall 61 contacts with the first side wall 11, the heat dissipation wall 61 surrounds the air duct 13, and the heat dissipation fins 62 are uniformly arranged in the air duct 13 along the heat dissipation wall 61.

Specifically, in this embodiment, as shown in fig. 4, the heat sink 6 forms an air duct 13 structure by enclosing the heat sink wall 61 itself, the heat sink fins 62 are disposed in the air duct 13, and do not affect other devices in the housing 1, and the heat sink 6 is also not affected by the structure of the housing 1, and is freely disposed, and its size can also be designed according to the charging power of the whole wireless charging device.

Optionally, the first sidewall 11 is made of a heat conductive material.

In particular, the heat conductive material is a novel industrial material, is designed aiming at the heat conduction requirement of equipment in recent years, has excellent and reliable performance, and is suitable for various environments and requirements. The first side wall 11 made of heat conducting materials can rapidly transmit heat generated by the charging coil 3, and the reliability of heat dissipation of products is improved. The heat conducting material may be heat conducting silica gel, graphene, gold, silver, copper, iron, aluminum, or the like, which is not limited in this application.

Optionally, as shown in fig. 1 to 2, a heat conductive cushion 7 is disposed around the charging coil 3.

Specifically, when arranging of charging coil 3 is carried out on first lateral wall 11 surface, first lateral wall 11 does not necessarily can be paved, fills heat conduction cushion 7 in the position of not laying charging coil 3, on the one hand can play protection and fixed effect to charging coil 3, prevents that charging coil 3 from suffering destruction, has improved wireless charging device's reliability. On the other hand heat conduction cushion 7 lays around charging coil 3, when charging to electronic product 9, can direct contact electronic product 9, can be fast with heat transfer on the electronic product 9 to first lateral wall 11 on simultaneously, realize the rapid cooling to electronic product 9. In addition, in the embodiment provided with the semiconductor refrigerator 5, the heat-conducting soft cushion 7 can also be in direct contact with the cold end of the semiconductor refrigerator 5, so that the electronic product 9 can be cooled better through the low temperature of the cold end. The heat conducting soft pad 7 may be made of a heat conducting material with elastic properties, such as elastic rubber, elastic potting adhesive, etc., which is not limited in this application.

Optionally, an NTC thermistor is disposed on the charging coil 3, and the NTC thermistor is electrically connected with the control module 2.

Specifically, add the temperature that Negative Temperature Coefficient (NTC) thermistor established can real time monitoring charging coil 3 on charging coil 3, and control module 2 passes through the temperature of NTC thermistor feedback, in time adjusts the fan rotational speed, if the fan rotational speed reaches the highest time, the temperature of charging coil 3 still can not fall to working range, also can in time adjust charging coil 3's charging power through control module 2, and the wireless charging device of mode is burnt out.

Optionally, as shown in fig. 1 to 2, the outer surface of the charging coil 3 is provided with a protective film 8.

Specifically, protective film 8 sets up on charging coil 3's surface, can play waterproof, dirt-proof effect on the one hand, and on the other hand also can play the guard action to charging coil 3. The protection film can set up to transparent film, increases wireless charging equipment's outward appearance uniqueness, also can set up to opaque film, plays the effect of hiding wireless charging equipment inner structure, specifically can design according to the audience crowd of product.

The electronic product 9 in the above embodiments may be a mobile phone, a tablet, or other device capable of wirelessly charging the electronic product, which is not limited in this application.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wireless charging device, comprising:

the air conditioner comprises a shell (1), wherein the shell (1) is provided with a first side wall (11), an air duct (13) is arranged in the shell (1) and is adjacent to the first side wall (11), and the air duct (13) is communicated with the outside of the shell (1);

a charging coil (3), wherein the charging coil (3) is arranged on the first side wall (11);

the fan (4), the said fan (4) is set up in the said body (1), and the said fan locates at one end of the said wind channel (13);

a semiconductor refrigerator (5), said semiconductor refrigerator (5) having a cold end adjacent to said charging coil (3) and a hot end adjacent to said first side wall (11);

the control module (2), the control module (2) sets up in casing (1), control module (2) respectively with the charging coil, the fan with the semiconductor refrigerator electricity is connected.

2. The wireless charging device according to claim 1, wherein the charging coil (3) is disposed on an outer surface of the first side wall (11), and the semiconductor refrigerator (5) is sandwiched between the charging coil (3) and the first side wall (11).

3. The wireless charging device according to claim 1, characterized in that the charging coil (3) is electrically connected with the control module (2) through the circuitry of the semiconductor refrigerator (5).

4. The wireless charging apparatus according to claim 1, further comprising a heat sink (6), wherein the heat sink (6) has a heat dissipation wall (61) and heat dissipation fins (62) uniformly arranged on the heat dissipation wall (61), the heat dissipation wall (61) is in contact with the first side wall (11), the heat dissipation wall (61) and the second side wall (12) of the housing (1) form the air duct (13), and the heat dissipation fins (62) are located in the air duct (13).

5. The wireless charging device according to claim 1, further comprising a heat sink (6), wherein the heat sink (6) has a heat dissipation wall (61) and heat dissipation fins (62), the heat dissipation wall (61) is in contact with the first side wall (11), the heat dissipation wall (61) encloses to form the air duct (13), and the heat dissipation fins (62) are uniformly arranged in the air duct (13) along the heat dissipation wall (61).

6. The wireless charging device according to claim 1, characterized in that the first side wall (11) is made of a heat conducting material.

7. The wireless charging device according to claim 1, characterized in that a thermally conductive cushion (7) is arranged around the charging coil (3).

8. The wireless charging device according to claim 1, characterized in that an NTC thermistor is arranged on the charging coil (3), and the NTC thermistor is electrically connected with the control module (2).

9. Wireless charging device according to claim 1, characterized in that the outer surface of the charging coil (3) is provided with a protective film (8).