Wireless charging device and vehicle

Abstract

The utility model provides a wireless charging device and a vehicle. The wireless charging device comprises a semiconductor cooler, a cold air module, a hot air module and a charging module. The semiconductor refrigerator is provided with a refrigerating surface and a heating surface; the cold end air channel comprises an air inlet, a cold guide section, an air outlet section and an air outlet which are connected in sequence, the cold guide section is connected to the refrigeration face, and the first air blowing piece is used for forming airflow flowing from the air inlet to the air outlet in the cold end air channel; the hot air module comprises a hot end air channel connected to the heating face and a second air blowing piece used for forming flowing airflow in the hot end air channel. The charging module is arranged on the first side of the air outlet section and used for wirelessly charging the mobile terminal abutting against the charging face located on the second side of the air outlet section. According to the wireless charging device, heat of the mobile terminal is taken away by arranging the first air blowing piece in the cold end air channel, and heat of the heating surface of the semiconductor cooler is taken away by arranging the second air blowing piece in the hot end air channel, so that the heat exchange efficiency of the semiconductor cooler is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle-mounted equipment, and in particular, relates to a wireless charging device and a vehicle. Background Art

[0002] With the upgrade of vehicle-mounted equipment, wireless charging devices are generally installed in the car. When a mobile terminal such as a mobile phone needs to be charged, the mobile terminal only needs to be placed on the wireless charging device. However, the mobile terminal generates heat during the charging process, which affects the battery life, performance and charging efficiency of the mobile terminal. Therefore, a heat dissipation structure needs to be set in the wireless charging device.

[0003] The heat dissipation structure of current wireless charging devices all uses traditional air cooling technology, that is, using fans to blow away heat. This technology has great limitations, low heat dissipation efficiency, and is easily affected by ambient temperature. If the ambient temperature rises, the heat dissipation efficiency of the wireless charging device will drop sharply. Summary of the invention

[0004] The purpose of the present application is to provide a wireless charging device and a vehicle, aiming to solve the technical problem of low heat dissipation efficiency of existing wireless charging devices.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, a wireless charging device is provided for wirelessly charging a mobile terminal, comprising a semiconductor refrigerator, a cold air module, a hot air module and a charging module;

[0007] The semiconductor refrigerator has a cooling surface and a heating surface;

[0008] The cold air module comprises a cold end air duct and a first blowing member, the cold end air duct comprises an air inlet, a cold guide section, an air outlet section and an air outlet connected in sequence, the cold guide section is connected to the refrigeration surface, and the first blowing member is used to form an airflow from the air inlet to the air outlet in the cold end air duct;

[0009] The hot air module comprises a hot end air duct and a second blowing member, wherein the hot end air duct is connected to the heating surface, and the second blowing member is used to form a flowing airflow in the hot end air duct;

[0010] The charging module is arranged on the first side of the air outlet section, and is used for wirelessly charging the mobile terminal resting on the charging surface, and the charging surface is located on the second side of the air outlet section, wherein the first side and the second side of the air outlet section are opposite sides.

[0011] In one of the embodiments of the first aspect, the cold end air duct also includes a first connecting section arranged between the cooling conduction section and the air outlet section, the second side of the cooling conduction section faces the first side of the air outlet section, the first side of the cooling conduction section is connected to the refrigeration surface, and the charging module is located between the first side of the air outlet section and the second side of the cooling conduction section, wherein the first side and the second side of the cooling conduction section are opposite sides.

[0012] In one embodiment of the first aspect, the first blowing member is disposed between the air outlet section and the cooling conduction section.

[0013] In one embodiment of the first aspect, the first blowing member is a centrifugal fan and is located between the first side of the air outlet section and the second side of the cooling conduction section. The inlet and outlet of the first connecting section are arranged on the side of the first connecting section facing the charging module and are used to guide the airflow to flow along a U-shaped path. The outlet of the cooling conduction section faces the second side of the cooling conduction section and is connected to the inlet of the first blowing member, and the inlet of the first connecting section is connected to the outlet of the first blowing member.

[0014] In one embodiment of the first aspect, an air outlet direction of the air outlet of the first connecting section forms a preset angle with an extending direction of the air outlet section.

[0015] In one embodiment of the first aspect, a cross-sectional area of ​​the air outlet of the first connecting section is smaller than a cross-sectional area of ​​the air inlet of the first connecting section.

[0016] In one embodiment of the first aspect, the cold end air duct further includes a second connecting section, and one end of the second connecting section is connected to the air inlet.

[0017] In one of the embodiments of the first aspect, the cooling section is located on one side of the cooling surface, the cooling section includes a plurality of cooling fins connected to the cooling surface, and the cooling fins extend along the extension direction of the cooling section; the hot end air duct is located on one side of the heating surface, the hot end air duct includes a plurality of heat conducting fins connected to the heating surface, and the heat conducting fins extend along the extension direction of the hot end air duct.

[0018] In one embodiment of the first aspect, the hot end air duct includes a first air outlet, a heat conduction section, and a second air outlet connected in sequence, the first air outlet is close to the air inlet, and the second air outlet is far away from the air inlet;

[0019] Wherein, the second blowing member is disposed at the first air outlet and is used to generate an airflow from the first air outlet to the second air outlet, or to generate an airflow from the second air outlet to the first air outlet;

[0020] Alternatively, the hot end air duct includes a side air outlet connected to the heat conduction section, the side air outlet is arranged opposite to the semiconductor refrigerator, the second blowing member is arranged at the side air outlet, and is used to generate an airflow from the side air outlet to the first air outlet and the second air outlet respectively, or is used to generate an airflow from the first air outlet and the second air outlet to the side air outlet respectively.

[0021] In a second aspect, a vehicle is provided, comprising the wireless charging device as described in the above embodiment.

[0022] The technical effect of the present application compared to the prior art is: the wireless charging device is provided with a cold-end air duct and a first blowing piece, so that the cooling air flow cooled by the cooling surface of the semiconductor refrigerator in the cooling section flows to the air outlet section, and takes away the heat of the mobile terminal against the charging surface and the heat of the charging module; and by providing a hot-end air duct and a second blowing piece, the heat of the heating surface of the semiconductor refrigerator is taken away in time to improve the heat exchange efficiency of the semiconductor refrigerator, so that the cooling effect of the cooling surface is also improved accordingly. The combination of the cold air module and the hot air module can improve the heat exchange efficiency between the semiconductor refrigerator and the mobile terminal. The first blowing piece and the second blowing piece can be independently arranged according to heat dissipation and space requirements, which is suitable for situations where the interior space of the vehicle is limited. In addition, compared with the conventional solution in which the cold-end air duct only includes an air outlet section and the cooling surface is connected to the air outlet section, the cooling section and the air outlet section in the embodiment of the present application can be structurally designed separately. The cooling section can be used only for cooling air, and its cross-sectional area and extension length can be set according to cooling needs. The air outlet section can be used only for charging and heat dissipation of the mobile terminal. For example, the thickness of the air outlet section is set to be thinner to shorten the distance between the charging module and the mobile terminal and reduce the space occupied in the thickness direction. The contact area between the cold air and the mobile terminal can also be increased according to heat dissipation needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 is a three-dimensional structural diagram of a wireless charging device provided in an embodiment of the present application;

[0025] Figure 2 yes Figure 1 An exploded view of the wireless charging device in FIG.

[0026] Figures 3 to 7 1 is a side view of a wireless charging device in different embodiments.

[0027] Description of reference numerals:

[0028] 10. semiconductor refrigerator; 101. cooling surface; 102. heating surface; 11. interface material; 20. cold air module; 201. charging surface; 21. cold end air duct; 211. air inlet; 212. cooling section; 213. air outlet; 2131. baffle; 2132. support rib; 214. air outlet; 215. first connecting section; 212. cooling section; 2120. cooling fin; 216. second connecting section; 22. first blowing member ; 30. hot air module; 31. hot end air duct; 311. first air outlet; 312. heat conduction section; 313. second air outlet; 314. side air outlet; 310. heat conduction fin; 32. second blowing member; 40. charging module; 41. charging transmitting coil; 42. ferrite; 43. main board; 90. mobile terminal; 221, 2121, 2151, 2161, import; 222, 2122, 2152, 2162, export. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0030] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] In this embodiment, according to Figure 1 The XYZ rectangular coordinate system established in the figure is defined as follows: the side located in the positive direction of the X-axis is defined as the front side, and the side located in the negative direction of the X-axis is defined as the back side; the side located in the positive direction of the Y-axis is defined as the left side, and the side located in the negative direction of the Y-axis is defined as the right side; the side located in the positive direction of the Z-axis is defined as the upper side, and the side located in the negative direction of the Z-axis is defined as the lower side.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0035] The embodiment of the present application provides a wireless charging device for wirelessly charging a mobile terminal. In this embodiment, the wireless charging device can be applied to a vehicle, for example, it is arranged on the center console of the vehicle, and the user can place the mobile terminal on the wireless charging device for wireless charging. The mobile terminal can be a mobile phone, a tablet computer, a laptop computer, a wearable electronic device, a handheld mobile station, etc. In other embodiments, the wireless charging device can also be applied to smart homes or independent portable charging devices.

[0036] To facilitate the description of the technical solution of the present application, the present application uses the first side and the second side to represent two relative reference positions of the wireless charging device. Figure 1 As shown, when the wireless charging device is installed on a vehicle as shown, the first side may be the lower side of the wireless charging device, and the second side may be the upper side of the wireless charging device. Similarly, the first side and the second side may also represent the relative positions of various components / assemblies of the wireless charging device, still in the form of Figure 1 For example, the first side and the second side may also represent the lower side and the upper side of each component / assembly. It can be understood that, according to the actual installation position of the wireless charging device, the first side and the second side may also represent the left side and the right side, or the front side and the rear side of the wireless charging device and its components; when the wireless charging device is installed on the vehicle as a whole at an angle, the first side and the second side may also represent the two side orientations with the tilt direction as the axis, and the present application does not limit this. For ease of understanding, in the following embodiments, the first side is described as the lower side and the second side is described as the upper side.

[0037] The wireless charging device may be formed with a charging surface on its upper side, and the charging surface is arranged horizontally. When in use, the mobile terminal may be placed against the charging surface, and the wireless charging device may charge and dissipate heat for the mobile terminal placed against the charging surface. The mobile terminal may stay on the charging surface under the action of gravity or magnetic attraction. In other embodiments, the charging surface may also be inclined or vertically arranged, and rest against the charging surface through magnetic attraction or the support of a support member. In actual applications, the inclination angle of the charging surface may be set according to the internal space of the vehicle and design requirements, and the inclination angle of the charging surface is not limited here.

[0038] See also Figure 1 and Figure 2 The wireless charging device includes a semiconductor refrigerator 10 (Thermoelectric cooler, TEC), a cold air module 20, a hot air module 30 and a charging module 40.

[0039] The semiconductor refrigerator 10 refers to a device that uses the thermoelectric effect of semiconductors to generate cooling. The semiconductor refrigerator 10 has a cooling surface 101 and a heating surface 102. After the semiconductor refrigerator 10 is powered on, the temperature of the cooling surface 101 decreases and can be used for cooling, and the temperature of the heating surface 102 increases and can be used for heating.

[0040] The cold air module 20 includes a cold end air duct 21 and a first blowing member 22. The cold end air duct 21 includes an air inlet 211, a cooling section 212, an air outlet section 213 and an air outlet 214 connected in sequence. The cooling section 212 is connected to the cooling surface 101. The cooling surface 101 can cool the air in the cooling section 212. Figure 3 , Figure 3 The hollow arrow in the figure indicates the direction of airflow in the cold end air duct 21. The first blowing member 22 is used to form an airflow from the air inlet 211 to the air outlet 214 in the cold end air duct 21, so as to blow the cold air of the cooling section 212 to the air outlet section 213. The connection between the cooling section 212 and the refrigeration surface 101 can be directly connected or indirectly connected through other structures. The air inlet 211 is an orifice-shaped structure for external air to enter the cooling section 212. The air inlet 211 can be integrally formed with the cooling section 212. The air outlet 214 is an orifice-shaped structure for the airflow in the cold end air duct 21 to flow out. The air outlet 214 can be integrally formed with the air outlet section 213.

[0041] The charging module 40 is disposed at the lower side of the air outlet section 213, wherein the charging surface 201 is located at the upper side of the air outlet section 213, and the charging module 40 and the charging surface 201 are directly opposite to each other in the vertical direction to shorten the distance between the charging module 40 and the mobile terminal. The charging module 40 is used to charge the mobile terminal 90 (such as a mobile terminal 90) against the charging surface 201. Figure 3) is wirelessly charged, and the charging module 40 generates heat during the charging process, and the mobile terminal 90 also generates heat during the wireless charging process. Under the action of the first blowing member 22, external air can enter the cooling section 212 from the air inlet 211, and after being cooled by the refrigeration surface 101, a cooling airflow is formed and flows to the air outlet section 213. The cooling airflow can absorb the heat of the mobile terminal 90 and the charging module 40 in the air outlet section 213, and take the heat out from the air outlet 214 to achieve cooling of the mobile terminal 90.

[0042] In other embodiments, the cold end air duct 21 may also connect the air inlet 211 and the air outlet 214 to form a circulation loop, so that the cooling airflow after being cooled by the refrigeration surface 101 absorbs the heat of the mobile terminal 90 in the air outlet section 213 and then recirculates to the cooling section 212 for cooling, thereby re-forming the cooling airflow. Among them, the air inlet 211 and the air outlet 214 may be connected end to end, and at this time, the airflow in the cold end air duct 21 only circulates internally, and the cold end air duct 21 may also have an air inlet end that can take in air from the outside and an air outlet end for blowing out the airflow, which is not limited here.

[0043] The hot air module 30 includes a hot end air duct 31 and a second blowing member 32. Figure 3 , Figure 3 The solid arrow in shows the airflow direction in the hot end air duct 31 , and the second blowing member 32 is used to form a flowing airflow in the hot end air duct 31 .

[0044] The hot end air duct 31 is connected to the heating surface 102. The hot end air duct 31 can absorb the heat of the heating surface 102 and transfer the absorbed heat to the air in the hot end air duct 31. Under the action of the second blowing member 32, the heat of the heating surface 102 is taken out of the hot end air duct 31 along with the air flow. The connection between the hot end air duct 31 and the heating surface 102 can be directly connected or indirectly connected through other structures.

[0045] The wireless charging device is provided with a cold-end air duct 21 and a first blowing member 22, so that the cooling air flow cooled by the cooling surface 101 of the semiconductor refrigerator 10 in the cooling section 212 flows to the air outlet section 213, and takes away the heat of the mobile terminal 90 resting on the charging surface 201 and the heat of the charging module 40. The hot-end air duct 31 and the second blowing member 32 are also provided to promptly take away the heat of the heating surface 102 of the semiconductor refrigerator 10 to improve the heat exchange efficiency of the semiconductor refrigerator 10, so that the cooling effect of the cooling surface 101 is also improved accordingly. The combination of the cold air module 20 and the hot air module 30 can improve the heat exchange efficiency between the semiconductor refrigerator 10 and the mobile terminal 90. The first blowing member 22 and the second blowing member 32 can be independently arranged according to heat dissipation and space requirements, and are suitable for situations where the interior space of the vehicle is limited. In addition, compared with the conventional solution in which the cold end air duct 21 only includes an air outlet section 213 and the cooling surface 101 is connected to the air outlet section 213, the cooling section 212 and the air outlet section 213 in the embodiment of the present application can be structurally designed separately. The cooling section 212 can be used only for cooling air, and its cross-sectional area and extension length can be set according to cooling needs. The air outlet section 213 can be used only for charging and heat dissipation of the mobile terminal 90. For example, the thickness of the air outlet section 213 is set to be thinner to shorten the distance between the charging module 40 and the mobile terminal 90 and reduce the space occupied in the thickness direction. The contact area between the cold air and the mobile terminal 90 can also be increased according to heat dissipation needs.

[0046] In some embodiments, see Figure 1 and Figure 3 The charging module 40 includes a charging transmitting coil 41, a ferrite 42 and a main board 43. The main board 43 is electrically connected to the charging transmitting coil 41 and is used to control the charging transmitting coil 41 to charge the mobile terminal 90. The ferrite 42 is used to converge the magnetic lines of force of the charging transmitting coil 41 to improve the charging efficiency of the mobile terminal 90. Among them, the charging transmitting coil 41, the ferrite 42 and the main board 43 can be stacked in sequence from top to bottom. Of course, the arrangement of the charging transmitting coil 41, the ferrite 42 and the main board 43 is not limited to this, as long as the mobile terminal 90 on the charging surface 201 can be wirelessly charged.

[0047] In some embodiments, see Figure 1 and Figure 3, the cold end air duct 21 also includes a first connecting section 215 provided between the cooling section 212 and the air outlet section 213, and the cooling airflow in the cooling section 212 enters the air outlet section 213 via the first connecting section 215. The upper side of the cooling section 212 faces the lower side of the air outlet section 213, and the charging module 40 is located between the lower side of the air outlet section 213 and the upper side of the cooling section 212. In this way, the cold end air duct 21 is folded up and down to reduce the horizontal space occupied in the vehicle. At the same time, the cold end air duct 21 is wrapped around the charging module 40 to improve the heat dissipation efficiency of the charging module 40. Among them, the cooling section 212 extends in the horizontal direction, and the air outlet section 213 extends in the horizontal direction to shorten the space occupied by the cold end air duct 21 in the upper and lower directions.

[0048] Combination Figure 2 The cooling surface 101 of the semiconductor refrigerator 10 is located on the upper side of the semiconductor cooling surface 101, the heating surface 102 is located on the lower side of the semiconductor refrigerator 10, the lower side of the cooling section 212 is connected to the cooling surface 101, and the upper side of the hot end air duct 31 is connected to the heating surface 102. In this way, the hot end air duct 31 and the cold end air duct 21 are arranged in an upper and lower stacking arrangement, reducing the horizontal space occupied by the wireless charging device in the vehicle.

[0049] Optionally, the cross-sectional area of ​​the air outlet section 213 is smaller than the cross-sectional area of ​​the cooling section 212. The thinning of the air outlet section 213 is beneficial to improving the charging efficiency of the mobile terminal 90, while increasing the flow rate and wind pressure of the airflow therein, but it also limits the air volume to a certain extent. In practical applications, it can be adjusted according to the needs of charging efficiency and heat dissipation efficiency. In this embodiment, the thickness of the air outlet section 213 can be set to 1.5-4mm.

[0050] In some embodiments, see Figure 1 and Figure 2 The air outlet section 213 includes a baffle 2131 and a plurality of support ribs 2132 protruding from the upper side of the baffle 2131. The extension direction of the support ribs 2132 is the extension direction of the air outlet section 213. The plurality of support ribs 2132 are spaced apart, and the arrangement direction is the normal direction of the extension direction of the support ribs 2132. The upper sides of the plurality of support ribs 2132 jointly form the above-mentioned charging surface 201. The mobile terminal 90 (such as Figure 3 ) can be supported on the support ribs 2132. The contact area between the support ribs 2132 and the mobile terminal 90 is small, which can expose most of the heating surface 102 of the mobile terminal 90 while supporting the mobile terminal 90. Most of the area can be in direct contact with the airflow in the air outlet section 213, thereby improving the heat dissipation efficiency. Figure 3The mobile terminal 90 can also guide the airflow in the air outlet section 213, so that the airflow blows from one end of the air outlet section 213 close to the first connecting section 215 to the end away from the first connecting section 215, and is blown out from the air outlet 214, thereby achieving full contact between the airflow and the heating surface 102 of the mobile terminal 90.

[0051] Optional, see Figure 1 and Figure 3 , the upper side of the first connecting section 215 can also form a part of the charging surface 201, and the mobile terminal 90 can partially abut against the first connecting section 215 and partially abut against the air outlet section 213, so as to ensure that the airflow blown out by the first connecting section 215 acts on the heating surface 102 of the mobile terminal 90 as much as possible. Among them, the height of the support rib 2132 protruding from the baffle 2131 can be equal to the height of the first connecting section 215 protruding from the baffle 2131, or slightly lower than the height of the first connecting section 215 protruding from the baffle 2131.

[0052] Optional, see Figure 2 The cooling section 212 includes a plurality of cooling fins 2120 connected to the cooling surface 101. The cooling fins 2120 extend along the extension direction of the cooling section 212. The plurality of cooling fins 2120 are arranged at equal intervals along the normal direction of the extension direction of the cooling fins 2120. The cooling surface 101 can reduce the temperature of each cooling fin 2120. Each cooling fin 2120 can cool the surrounding air. The arrangement of the plurality of cooling fins 2120 can increase the contact area with the air and increase the amount of cold air. A cooling channel is formed between two adjacent cooling fins 2120. The air in the cooling channel can be cooled by two adjacent cooling fins 2120, so the temperature is lower and the heat dissipation efficiency is improved.

[0053] Among them, the cooling fins 2120 can be connected to the cooling surface 101 through an interface material 11 (such as thermal conductive gel), or connected to the cooling surface 101 through metal fusion welding, thereby reducing the thermal resistance between the cooling fins 2120 and the cooling surface 101 and improving the heat exchange efficiency between the cooling surface 101 and the cooling fins 2120.

[0054] A common way of setting the first blowing member 22 is to set the first blowing member 22 at the air inlet, so that the first blowing member 22 can blow air directly toward the cooling conduction section 212 to increase the wind pressure in the cooling conduction section 212. However, this method requires an axial flow fan to be set at the air inlet 211, and the axial direction of the axial flow fan is in the same direction as the extension direction of the cooling conduction section 212. This results in the height of the first blowing member 22 being the radial height of the impeller, occupying a larger space in the upper and lower directions of the wireless charging device. In addition, the airflow blown out by the first blowing member 22 flows through the cooling conduction section 212 and enters the air outlet section 213. The wind resistance of the airflow is relatively large, which reduces the wind pressure of the airflow in the air outlet section 213.

[0055] To solve the above problem, in this embodiment, please refer to Figure 1 As shown in Figure 3, the first blowing member 22 can be set between the air outlet section 213 and the cooling section 212, so that the first blowing member 22 sucks air in the cooling section 212 and blows air toward the air outlet section 213. In this way, the airflow blown by the first blowing member 22 does not flow through the cooling section 212, thereby reducing wind resistance and increasing the wind pressure of the airflow in the air outlet section 213.

[0056] In actual applications, the first blowing member 22 is generally arranged in the first connecting section 215, and an axial flow fan is used to increase the exhaust volume, thereby improving the heat dissipation efficiency. At this time, the axial direction of the axial flow fan is in the up and down direction, but the airflow blown out by the first blowing member 22 will hit the upper side wall at the outlet 2152 of the first connecting section 215, and then rebound toward the lower side and hit the first blowing member 22, affecting the performance of the first blowing member 22 and disrupting the flow direction of the airflow in the air outlet section 213.

[0057] In this regard, the first blowing member 22 uses a centrifugal fan. The first blowing member 22 includes a shell and an impeller. The shell includes a cover plate, a bottom plate and a side plate. The cover plate is spaced apart from the bottom plate. The side plate is connected to the edge of the cover plate and the bottom plate, and is enclosed together with the cover plate and the bottom plate to form an air guide channel. The impeller is rotatably connected to the cover plate and is located in the air guide channel. The bottom plate is provided with an inlet 221, and the side plate is provided with an outlet 222. The directions of the inlet 221 and the outlet 222 are perpendicular to each other, and the extension direction of the rotation axis of the impeller is the same as the direction of the inlet 221. The axial direction of the impeller is the thickness direction of the first blowing member 22.

[0058] Combination Figure 2 , the first blowing member 22 is located at the lower side of the air outlet section 213 and the upper side of the cooling section 212, the outlet 2122 of the cooling section 212 faces the upper side, and the inlet 221 of the first blowing member 22 faces the lower side and is connected with the outlet 2122 of the cooling section 212. The inlet 2151 and outlet 2152 of the first connecting section 215 are arranged on the side of the first connecting section 215 facing the charging module 40, and are used to guide the airflow to flow along the U-shaped path. The inlet 2151 of the first connecting section 215 is generally oriented in the horizontal direction, and the outlet 222 of the first blowing member 22 is also generally oriented in the horizontal direction. The inlet 2151 of the first connecting section 215 is connected with the outlet 222 of the first blowing member 22. In this way, the airflow blown out by the first blowing member 22 enters the first connecting section 215, and after being guided by the first connecting section 215, enters the air outlet section 213 along the U-shaped path, so as to prevent the airflow blown out by the first blowing member 22 from rebounding toward the first blowing member 22, thereby improving the heat dissipation efficiency. At the same time, the thickness direction of the first blowing member 22 is the up-down direction, which reduces the upper and lower space occupied by the first blowing member 22. In addition, the first blowing member 22 and the charging module 40 are arranged side by side, making full use of the space between the lower side of the air outlet section 213 and the upper side of the cooling section 212.

[0059] Optional, see Figure 1 and Figure 3 , the outlet direction of the outlet 2152 of the first connecting section 215 forms a preset angle with the extension direction of the outlet section 213. In this way, not only the wind resistance of the first connecting section 215 is reduced, but also the airflow from the first connecting section 215 can be blown upward obliquely to the mobile terminal 90, thereby improving the heat dissipation efficiency. In practical applications, the outlet direction of the outlet 2152 of the first connecting section 215 can be set to blow toward the heating area of ​​the mobile terminal 90.

[0060] Optionally, the cross-sectional area of ​​the outlet 2152 of the first connecting section 215 is smaller than the cross-sectional area of ​​the inlet 2151 of the first connecting section 215. In this way, the airflow can be accelerated when flowing out of the first connecting section 215. At the same time, since the larger inlet 2151 of the first connecting section 215 is directly connected to the first blowing piece 22, the wind resistance is small, thereby ensuring that the air volume of the airflow flowing out of the first connecting section 215 is large, thereby further improving the heat dissipation efficiency.

[0061] In other embodiments, the first blowing member 22 may also be disposed between the first connecting section 215 and the air outlet section 213 , which is not limited here.

[0062] In some embodiments, see Figure 1 and Figure 3 The cold end air duct 21 further includes a second connecting section 216, one end of which is connected to the air inlet 211. The inlet 2162 of the second connecting section 216 is the inlet of the cold end air duct 21. The inlet of the cold end air duct 21 can be set at a suitable position by setting the second connecting section 216. For example, Figure 2 The inlet 2161 of the second connecting section 216 can be arranged at a position protruding from the air outlet to prevent the hot air discharged from the air outlet from being directly re-inhaled from the inlet of the cold end air duct 21, thereby reducing the heat dissipation efficiency. At the same time, the second connecting section 216 provides a mounting position for the charging module 40, thereby freeing up space on the upper side of the cold conducting section 212 to set the first blowing member 22.

[0063] Optionally, the inlet 2161 of the second connecting section 216 may be disposed on the upper side of the second connecting section 216 so that the inlet and the outlet of the cold end air duct 21 are oriented in the same direction, which facilitates the arrangement of the wireless charging device in the vehicle.

[0064] In some embodiments, see Figure 1 and Figure 2The hot end air duct 31 includes a plurality of heat-conducting fins 310 abutting against the heating surface 102. The heat-conducting fins 310 extend along the extension direction of the hot end air duct 31. The plurality of heat-conducting fins 310 are arranged at equal intervals along the normal direction of the extension direction of the heat-conducting fins 310. The heating surface 102 can increase the temperature of each heat-conducting fin 310, and each heat-conducting fin 310 can heat the surrounding air. The arrangement of the plurality of heat-conducting fins 310 can increase the contact area with the air, and a heat-conducting channel is formed between two adjacent heat-conducting fins 310. The air in the heat-conducting channel absorbs the heat of the two heat-conducting fins 310, thereby improving the heat exchange efficiency with the heat-conducting fins 310 and the heat dissipation efficiency.

[0065] The thermal fins 310 may be connected to the heating surface 102 via an interface material 11 (such as thermally conductive gel) or connected to the heating surface 102 via metal fusion welding, thereby reducing the thermal resistance between the thermal fins 310 and the heating surface 102 and improving the heat exchange efficiency between the heating surface 102 and the thermal fins 310.

[0066] In some embodiments, see Figure 1 and Figure 2 The hot end air duct 31 includes a first air port 311, a heat conduction section 312 and a second air port 313 connected in sequence. In this embodiment, the heat conduction section 312 extends in a straight line. The first air port 311 is close to the air inlet 211, and the second air port 313 is far away from the air inlet 211. The heat conduction section 312 is formed by the above-mentioned multiple heat conduction fins 310. The first air port 311 and the second air port 313 are both orifice structures for air flow to pass through. The first air port 311 and the second air port 313 can be integrally formed with the heat conduction section. The first air port 311 and the second air port 313 can be oriented in the horizontal direction, or towards the lower side or the upper side, which is not limited here.

[0067] For example, see Figure 3 The axial direction of the first air outlet 311 and the axial direction of the second air outlet 313 are the same as the axial direction of the heat conduction section 312. The second blowing member 32 is arranged at the first air outlet 311 and is used to generate an airflow from the first air outlet 311 to the second air outlet 313. The second blowing member 32 can be an axial flow fan. At this time, the airflow is sucked into the second blowing member 32 in the horizontal direction and blown horizontally to the second air outlet 313 in the heat conduction section 312. In this way, the second blowing member 32 can be arranged at the same horizontal height as the hot end air duct 31, reducing the space occupied by the wireless charging device in the vertical direction. At the same time, the airflow in the hot end air duct 31 and the cold conduction section 212 has the same flow direction, which can achieve cold and heat isolation, and prevent the hot air in the hot end air duct 31 from flowing to the cold end air duct 21. At the same time, the second blowing member 32 blows air toward the cold end air duct 21, and the wind pressure in the cold end air duct 21 is relatively large, and the heat dissipation efficiency is relatively high.

[0068] For example, see Figure 4 , Figure 4 The solid arrow in the figure is the direction of the airflow in the hot end air duct 31, and the hollow arrow is the direction of the airflow in the cold end air duct 21. The first air outlet 311 faces downward, and the axial direction of the second air outlet 313 is the same as the axial direction of the heat conduction section 312. The second blowing member 32 is arranged at the first air outlet 311 and is used to generate an airflow from the second air outlet 313 to the first air outlet 311. The second blowing member 32 can be a centrifugal fan. At this time, the airflow enters the heat conduction section 312 horizontally from the second air outlet 313 under the suction force of the second blowing member 32, and then is sucked into the second blowing member 32 from the second air outlet 313 toward the lower side, and blown out in the horizontal direction. At this time, the outlet of the second blowing member 32 is the outlet of the hot air module 30. In this way, the inlet of the cold end module can face the horizontal direction, and there is no need to open a avoidance space on the lower side of the hot end air duct 31. At the same time, the outlet of the hot end module and the outlet of the cold end module are in the same direction, which is to realize the arrangement of the wireless charging device in the vehicle. In addition, the second blowing member 32 is located at the lower side of the hot end air duct 31, which can increase the distance between the second blowing member 32 and the cold end air duct 21, thereby reducing the hot air blown out of the second blowing member 32 and then sucked into the cold end air duct 21. However, the air flow in the cold end air duct 21 flows through the suction of the second blowing member 32, the wind pressure is small, and the heat dissipation efficiency is limited, so it is only suitable for semiconductor refrigerators 10 with a power of less than 10W.

[0069] For example, see Figure 5 , Figure 5 The solid arrow in the figure is the direction of the airflow in the hot end air duct 31, and the hollow arrow is the direction of the airflow in the cold end air duct 21. The second air outlet 313 faces downward, and the axial direction of the first air outlet 311 is the same as the axial direction of the heat conduction section 312. The second blowing member 32 is arranged at the second air outlet 313 and is used to generate an airflow from the first air outlet 311 to the second air outlet 313. The second blowing member 32 can be a centrifugal fan. At this time, the airflow enters the heat conduction section 312 horizontally from the first air outlet 311 under the suction force of the second blowing member 32, and then is sucked into the second blowing member 32 from the second air outlet 313 toward the downward side and blown out in the horizontal direction. At this time, the outlet of the second blowing member 32 is the outlet of the hot air module 30. In this way, the inlet of the cold end module can face the horizontal direction, and there is no need to open a avoidance space at the lower side of the hot end air duct 31. The inlet of the cold end air duct 21 and the inlet of the hot end air duct 31 are both arranged on the same side, which can realize the isolation of hot and cold air, and prevent the hot air in the hot end air duct 31 from flowing to the cold end air duct 21 and reducing the heat dissipation efficiency of the cold end module. However, the airflow in the cold end air duct 21 flows through the suction of the second blowing member 32, the wind pressure is small, and the heat dissipation efficiency is limited, so it is only suitable for semiconductor refrigerators 10 with a power below 10W.

[0070] For example, see Figure 6 , Figure 6The solid arrow in the figure is the airflow direction in the hot end air duct 31, and the hollow arrow is the airflow direction in the cold end air duct 21. The hot end air duct 31 also includes a side air vent 314 connected to the heat conducting section 312, and the side air vent 314 is arranged opposite to the semiconductor refrigerator 10. Here, the relative arrangement means that there is no obstruction between the side air vent 314 and the semiconductor refrigerator 10, and they are close to each other. The side air vent 314 can be located at the lower side of the heat conducting section 312, or at one side of the heat conducting section 312 in the horizontal direction.

[0071] Optionally, the side air outlet 314 is located at the lower side of the heat conducting section 312, the axial direction of the first air outlet 311 and the axial direction of the second air outlet 313 are the same as the axial direction of the heat conducting section 312, the axial direction of the side air outlet 314 is in the up-down direction, and is arranged opposite to the semiconductor refrigerator 10 in the up-down direction, and the second blowing member 32 is arranged at the side air outlet 314, and is used to generate airflows blowing from the first air outlet 311 and the second air outlet 313 to the side air outlet 314. The second blowing member 32 can be an axial flow fan, at this time, the two airflows flow horizontally from the first air outlet 311 and the second air outlet 313 to the middle of the heat conducting section 312 respectively under the suction of the second blowing member 32, and after converging at the lower side of the semiconductor refrigerator 10, enter the second blowing member 32 from the side air outlet 314, and then blow out from the second blowing member 32 toward the lower side. This arrangement completely isolates hot and cold, preventing the hot air discharged from the hot-end air duct 31 from flowing to the cold-end air duct 21. At the same time, the hot-end air duct 31 forms two inlets with a larger air volume. Compared with the above three examples, this example has better heat dissipation efficiency, but it is necessary to set an avoidance space on the lower side of the side air outlet 314 to facilitate the discharge of hot air in the hot-end air duct 31.

[0072] Optional, see Figure 7 , Figure 7The solid arrow in the figure is the air flow direction in the hot end air duct 31, and the hollow arrow is the air flow direction in the cold end air duct 21. The side air outlet 314 is located at the lower side of the heat conducting section 312. The axial direction of the first air outlet 311 and the axial direction of the second air outlet 313 are both the same as the axial direction of the heat conducting section 312. The axial direction of the side air outlet 314 is the up-down direction, and is arranged opposite to the semiconductor refrigerator 10 in the up-down direction. The second blowing member 32 is arranged at the side air outlet 314, and is used to generate an air flow from the side air outlet 314 to the first air outlet 311 and the second air outlet 313 respectively. The second blowing member 32 can be an axial flow fan. At this time, the air flow enters the second blowing member 32 from the lower side to the upper side, and is blown toward the heating surface 102 by the second blowing member 32. After being rebounded and guided by the heating surface 102, the air flow is divided into two streams, flowing toward the first air outlet 311 and the second air outlet 313 respectively, and is blown out horizontally from the first air outlet 311 and the second air outlet 313. This arrangement allows external air to blow directly to the hottest area of ​​the hot end air duct 31, and has two outlets. The axial flow fan has a larger flow rate than the centrifugal fan, and has a better heat exchange efficiency and a higher heat dissipation efficiency than the above four examples, and can be applied to semiconductor refrigerators 10 with a power of more than 20W. However, since the side air outlet 314 is located at the lower side of the heat conducting section 312 and in the middle of the heat conducting section 312, a certain avoidance space needs to be reserved at the lower side of the second blowing member 32 for air intake.

[0073] In practical applications, a suitable arrangement of the hot air module 30 can be selected according to the heat dissipation requirements and the space inside the vehicle.

[0074] The embodiment of the present application also provides a vehicle, including the wireless charging device provided in the above embodiments. The wireless charging device has the same structural features as the wireless charging devices in the above embodiments, and has the same functions, which will not be repeated here. It should be noted that the vehicle referred to in the present application is not limited to conventional traveling vehicles, but may also be other types of vehicles, as long as the vehicle is provided with the above wireless charging device.

[0075] The above are only some specific embodiments of the present application, which only specifically describe the technical principles of the present application. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanation here, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application, and other specific implementation methods of the present application that can be associated with by technicians in this field without creative work, should be included in the scope of protection of the present application.

Claims

1. A wireless charging device for wirelessly charging a mobile terminal, characterized in that: include: A semiconductor refrigerator has a cooling surface and a heating surface; A cold air module, comprising a cold end air duct and a first blowing member, wherein the cold end air duct comprises an air inlet, a cold guide section, an air outlet section and an air outlet connected in sequence, wherein the cold guide section is connected to the refrigeration surface, and the first blowing member is used to form an airflow from the air inlet to the air outlet in the cold end air duct; A hot air module, comprising a hot end air duct and a second blowing member, wherein the hot end air duct is connected to the heating surface, and the second blowing member is used to form a flowing airflow in the hot end air duct; A charging module is arranged on the first side of the air outlet section, and is used for wirelessly charging the mobile terminal resting on a charging surface, wherein the charging surface is located on the second side of the air outlet section, wherein the first side and the second side of the air outlet section are opposite sides.

2. The wireless charging device according to claim 1, wherein: The cold end air duct also includes a first connecting section arranged between the cooling conduction section and the air outlet section, the second side of the cooling conduction section faces the first side of the air outlet section, the first side of the cooling conduction section is connected to the refrigeration surface, and the charging module is located between the first side of the air outlet section and the second side of the cooling conduction section, wherein the first side and the second side of the cooling conduction section are opposite sides.

3. The wireless charging device according to claim 2, wherein: The first blowing member is arranged between the air outlet section and the cooling conduction section.

4. The wireless charging device according to claim 3, characterized in that: The first blowing member is a centrifugal fan and is located between the first side of the air outlet section and the second side of the cooling conduction section. The inlet and outlet of the first connecting section are arranged on the side of the first connecting section facing the charging module and are used to guide the airflow to flow along a U-shaped path. The outlet of the cooling conduction section faces the second side of the cooling conduction section and is connected to the inlet of the first blowing member, and the inlet of the first connecting section is connected to the outlet of the first blowing member.

5. The wireless charging device according to claim 4, characterized in that: An air outlet direction of the air outlet of the first connecting section forms a preset angle with an extending direction of the air outlet section.

6. The wireless charging device according to claim 4, characterized in that: The cross-sectional area of ​​the air outlet of the first connecting section is smaller than the cross-sectional area of ​​the air inlet of the first connecting section.

7. The wireless charging device according to claim 2, wherein: The cold end air duct also includes a second connecting section, one end of which is connected to the air inlet.

8. The wireless charging device according to claim 2, wherein: The cooling section is located on one side of the cooling surface, and the cooling section includes a plurality of cooling fins connected to the cooling surface, and the cooling fins extend along the extension direction of the cooling section; the hot end air duct is located on one side of the heating surface, and the hot end air duct includes a plurality of heat conducting fins connected to the heating surface, and the heat conducting fins extend along the extension direction of the hot end air duct.

9. The wireless charging device according to any one of claims 1 to 8, characterized in that: The hot end air duct comprises a first air outlet, a heat conduction section and a second air outlet connected in sequence, the first air outlet is close to the air inlet, and the second air outlet is far away from the air inlet; Wherein, the second blowing member is disposed at the first air outlet and is used to generate an airflow from the first air outlet to the second air outlet, or to generate an airflow from the second air outlet to the first air outlet; Alternatively, the hot end air duct includes a side air outlet connected to the heat conduction section, the side air outlet is arranged opposite to the semiconductor refrigerator, the second blowing member is arranged at the side air outlet, and is used to generate an airflow from the side air outlet to the first air outlet and the second air outlet respectively, or is used to generate an airflow from the first air outlet and the second air outlet to the side air outlet respectively.

10. A vehicle, characterized in that: The invention comprises a wireless charging device as claimed in any one of claims 1 to 9.

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