Heat dissipation device and wireless charging equipment

Abstract

The utility model provides a heat dissipation device and wireless charging equipment, the heat dissipation device comprises a shell with an opening, the shell comprises a bottom wall opposite to the opening, and two first side walls, a second side wall and a third side wall which are connected to the periphery of the bottom wall; the two first side walls are oppositely arranged, the second side wall and the third side wall are connected between the two first side walls respectively, one first side wall is provided with a first ventilation opening, and at least one of the second side wall and the third side wall is provided with a second ventilation opening; the bottom wall is provided with a heat dissipation face facing the opening, a plurality of air guide grooves which are arranged at intervals in parallel are formed in the heat dissipation face and located between the first ventilation opening and the second ventilation opening, one end of each air guide groove is communicated with the first ventilation opening, and the other end of each air guide groove is communicated with the second ventilation opening to form a heat dissipation channel. The wireless charger solves the problem that heat generated when an electronic product is charged by an existing wireless charger is difficult to dissipate quickly, so that the heat dissipation efficiency of the electronic product is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat dissipation technology, in particular to a heat dissipation device and a wireless charging device. BACKGROUND

[0002] With the popularity of mobile phones and other portable electronic products, the application of batteries is also more and more extensive, and wireless charging technology gradually rises. Although the existing wireless charger can achieve the purpose of wireless charging, because the mobile phone placing surface of the wireless charger is a plane, that is, the wireless charger is closely attached to the mobile phone or other electronic products, therefore, the mobile phone or other electronic products will generate a lot of heat when charging, and the traditional cooling method is to blow air to the mobile phone from left and right to cool it down. Because the air direction of the air duct is opposite, the hot air in the air duct is difficult to dissipate quickly, thereby resulting in low heat dissipation efficiency of the mobile phone or other electronic products. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a heat dissipation device and a wireless charging device, which solves the problem that the heat generated by the existing wireless charger when charging the electronic product is difficult to dissipate quickly, resulting in low heat dissipation efficiency of the electronic product.

[0004] The present application is realized in this way, a heat dissipation device, comprising a shell with an opening, the shell comprising a bottom wall and two first side walls, a second side wall and a third side wall connected to the periphery of the bottom wall, the two first side walls are oppositely arranged, and the second side wall and the third side wall are respectively connected between the two first side walls, wherein one of the first side walls is provided with a first air vent, and at least one of the second side wall and the third side wall is provided with a second air vent; the bottom wall has a heat dissipation surface facing the opening, a plurality of parallel and spaced wind guide grooves are arranged on the heat dissipation surface, the wind guide grooves are located between the first air vent and the second air vent, and one end of the wind guide groove is communicated with the first air vent and the other end is communicated with the second air vent to form a heat dissipation channel.

[0005] In one embodiment, the second side wall and the third side wall are both provided with the second air vent;

[0006] The heat dissipation surface comprises a first region and a second region arranged adjacent to each other, the first region is located between the second side wall and the second region, and the wind guide groove is arranged in the first region and the second region;

[0007] One end of the wind guide groove located in the first region is arranged close to the first air vent, and the other end is arranged close to the second side wall;

[0008] One end of the air guide groove located in the second region is arranged close to the first air vent, and the other end is arranged close to the third side wall.

[0009] In one of the embodiments, a first included angle is formed between the extending direction of the air guide groove located in the first region and the first side wall.

[0010] A second included angle is formed between the extending direction of the air guide groove located in the second region and the first side wall.

[0011] The first included angle and the second included angle are equal.

[0012] In one of the embodiments, the first region and the second region are identical in shape and size.

[0013] In one of the embodiments, the first included angle formed between the extending direction of the air guide groove located in the first region and the first side wall is 10°-80°.

[0014] The second included angle formed between the extending direction of the air guide groove located in the second region and the first side wall is 10°-80°.

[0015] In one of the embodiments, a stopper is arranged between the first region and the second region, and the stopper is connected to the first side wall opposite to the first air vent.

[0016] In one of the embodiments, the first air vent is an air inlet, and the second air vent is an air outlet.

[0017] The side of the heat dissipation surface close to the first air vent is higher than the side of the heat dissipation surface away from the first air vent.

[0018] In one of the embodiments, the groove bottom of the air guide groove is in a circular arc shape.

[0019] In one of the embodiments, a plurality of air guide ribs are arranged on the heat dissipation surface in parallel and at intervals, and the air guide groove is formed between two adjacent air guide ribs.

[0020] In one of the embodiments, the side edge of the second side wall away from the bottom wall is outwardly turned away from the opening, and the side surface of the second side wall close to the bottom wall is in a curved shape.

[0021] In one of the embodiments, the side edge of the third side wall away from the bottom wall is outwardly turned away from the opening, and the side surface of the third side wall close to the bottom wall is in a curved shape.

[0022] In one of the embodiments, the first side wall opposite to the first vent is provided with a mounting member extending along the thickness direction of the bottom wall, the mounting member is provided with a groove, and the groove is flush with the opening.

[0023] The heat dissipation device provided by the application has the following advantages: compared with the prior art, the first vent is arranged on any one of the first side walls of the shell, the second vent is arranged on the second side wall and / or the third side wall of the shell, the first side wall and the second side wall are not opposite to each other, the first side wall and the third side wall are not opposite to each other, a plurality of air guide grooves are arranged on the heat dissipation surface of the bottom wall in parallel and at intervals, one end of each air guide groove is connected to the first vent, and the other end of each air guide groove is connected to the second vent to form a heat dissipation channel, when the electronic device is placed on the heat dissipation surface to be charged, the heat dissipation channel is located at the bottom surface of the electronic device, and the first vent and the second vent are not arranged opposite to each other, so that the hot air in the heat dissipation channel can be quickly dissipated, and the heat dissipation efficiency of the electronic device is greatly improved.

[0024] The application further provides a wireless charging device, which comprises the heat dissipation device according to any one of the above embodiments and a wireless charging base arranged on the surface of the bottom wall away from the opening.

[0025] The heat dissipation device provided by the application has the following advantages: compared with the prior art, the first vent is arranged on any one of the first side walls of the shell, the second vent is arranged on the second side wall and / or the third side wall of the shell, the first side wall and the second side wall are not opposite to each other, the first side wall and the third side wall are not opposite to each other, a plurality of air guide grooves are arranged on the heat dissipation surface of the bottom wall in parallel and at intervals, one end of each air guide groove is connected to the first vent, and the other end of each air guide groove is connected to the second vent to form a heat dissipation channel, when the electronic device is placed on the heat dissipation surface to be charged, the heat dissipation channel is located at the bottom surface of the electronic device, and the first vent and the second vent are not arranged opposite to each other, so that the hot air in the heat dissipation channel can be quickly dissipated, and the heat dissipation efficiency of the electronic device is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structural schematic diagram of a heat dissipation device provided by an embodiment of the application;

[0027] Figure 2 FIG. 2 is a structural schematic diagram of the heat dissipation device from another angle;

[0028] Figure 3 FIG. 3 is a partial detail view of I in FIG. 1; Figure 1

[0029] Figure 4 FIG. 4 is a sectional view of C-C in FIG. 3; Figure 1 ​​

[0030] Figure 5 is a schematic diagram of a heat dissipation path of a heat dissipation device provided by an embodiment of the present application;

[0031] Figure 6 is another schematic diagram of a heat dissipation path of a heat dissipation device provided by an embodiment of the present application;

[0032] Figure 7 is a schematic diagram of a heat dissipation surface of a heat dissipation device provided by an embodiment of the present application;

[0033] Figure 8 is another schematic diagram of a heat dissipation surface of a heat dissipation device provided by an embodiment of the present application;

[0034] Figure 9 is yet another schematic diagram of a heat dissipation surface of a heat dissipation device provided by an embodiment of the present application;

[0035] Figure 10 is a structural schematic diagram of a wireless charging device provided by an embodiment of the present application.

[0036] Reference signs: 1, housing; 10, opening; 11, bottom wall; 12, first side wall; 13, second side wall; 14, third side wall;

[0037] 20, heat dissipation surface; 201, first area; 202, second area;

[0038] 3, first vent; 4, second vent; 5, air guide groove; 50, air guide rib; 6, stop block; 7, mounting member; 70, groove;

[0039] 100, heat dissipation device; 200, wireless charging base. DETAILED DESCRIPTION

[0040] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0044] It should be noted that in the embodiments of the present application, the same reference signs represent the same components or the same parts, and for the same parts in the embodiments of the present application, only one part or component may be labeled with a reference sign in the drawing, and it should be understood that the reference sign is also applicable to other identical parts or components.

[0045] The embodiments of the present application provide a heat dissipation device and a wireless charging device, which solve the problem that the heat generated by the existing wireless charger when charging electronic products is difficult to dissipate quickly, resulting in low heat dissipation efficiency of the electronic products.

[0046] Reference Figure 1 and Figure 2 The heat dissipation device 100 provided by the embodiments of the present application includes a shell 1 with an opening 10, the shell 1 includes a bottom wall 11 arranged opposite to the opening 10, and two first side walls 12, a second side wall 13 and a third side wall 14 connected to the periphery of the bottom wall 11; the two first side walls 12 are arranged opposite to each other, and the second side wall 13 and the third side wall 14 are respectively connected between the two first side walls 12, wherein one of the first side walls 12 is provided with a first ventilation opening 3, and at least one of the second side wall 13 and the third side wall 14 is provided with a second ventilation opening 4; the bottom wall 11 has a heat dissipation surface 20 facing the opening 10, and a plurality of parallel and spaced wind guide grooves 5 are arranged on the heat dissipation surface 20, the wind guide grooves 5 are located between the first ventilation opening 3 and the second ventilation opening 4, and one end of the wind guide grooves 5 communicates with the first ventilation opening 3 and the other end communicates with the second ventilation opening 4 to form a heat dissipation channel.

[0047] Wherein, the heat dissipation device 100 of the embodiment of the present application is used in cooperation with the wireless charging base 200, and in use, the bottom wall 11 of the heat dissipation device 100 is in contact with the charging surface of the wireless charging base 200, so that the electronic device placed on the heat dissipation surface 20 can also be wirelessly charged.

[0048] In the embodiment of the present application, the electronic device placed on the heat dissipation surface 20 for wireless charging can be, but is not limited to, a smart phone, a smart watch, a wireless earphone or other electronic products with wireless charging function, and the heat dissipation surface 20 can be adapted to various models, greatly improving the convenience of wireless charging. In actual application, the heat dissipation device 100 of the present application can be installed on a wireless charging base of a vehicle for use, mainly for wireless charging of a mobile phone.

[0049] It can be understood that the wireless charging base 200 is internally provided with a transmitting coil module, and the heat dissipation surface 20 is provided with a mark for marking the position of the transmitting coil module. When the mobile phone is placed on the heat dissipation surface 20 for charging, the built-in receiving coil module in the mobile phone can be aligned with the mark on the heat dissipation surface 20 for marking the position of the transmitting coil module, so as to accurately wirelessly charge the mobile phone.

[0050] It should be noted that a plurality of parallel and spaced wind guide grooves 5 are arranged on the heat dissipation surface 20. When the electronic device is placed on the heat dissipation surface 20 for wireless charging, the bottom surface of the electronic device will cover the groove of the wind guide groove 5. Compared with the prior art in which the electronic device is completely attached to the heat dissipation surface 20 during charging, the heat dissipation effect is not ideal. In the present application, there is a certain space between the bottom surface of the electronic device and the groove bottom of the wind guide groove 5, which is conducive to the dissipation of heat generated by the electronic device during wireless charging. In addition, the arrangement of a plurality of wind guide grooves 5 on the heat dissipation surface 20 is also conducive to improving the anti-skid effect of the heat dissipation surface 20, so that the electronic device placed on the heat dissipation surface 20 is more stable, the charging process is uninterrupted, and the charging effect is better.

[0051] In the embodiment of the present application, the first vent 3 is arranged on one of the two first side walls 12, and the second vent 4 is arranged on the second side wall 13 or the third side wall 14. One end of the wind guide groove 5 is communicated with the first vent 3, and the other end is communicated with the second vent 4 to form a heat dissipation channel. The flow direction of the wind in the heat dissipation channel formed between the first vent 3 and the second vent 4 is unidirectional, and the phenomenon of heat accumulation in the heat dissipation channel does not occur, so that the heat in the heat dissipation channel is quickly taken out and dissipated.

[0052] In order to dissipate the heat generated by the electronic device during charging more quickly, in some embodiments, the second vent 4 is arranged on the second side wall 13 and the third side wall 14. One end of the air guide groove 5 is communicated with the first vent 3, and the other end is communicated with the second vent 4 to form a heat dissipation channel. The flow directions of the air in the heat dissipation channels formed between the first vent 3 and the second vent 4 arranged on the second side wall 13 and between the first vent 3 and the second vent 4 arranged on the third side wall 14 are different, so that the heat can be dissipated in different directions by using different heat dissipation channels, greatly improving the heat dissipation rate and thus improving the heat dissipation efficiency.

[0053] For example, referring to Figure 1 , the bottom wall 11 of the shell 1 is square, and the first side wall 12, the second side wall 13 and the third side wall 14 are connected around the bottom wall 11. At this time, the first side wall 12 is arranged adjacent to the second side wall 13 and the third side wall 14 respectively, and the second vent 4 is arranged on the second side wall 13 and the third side wall 14. The first vent 3 is arranged on one of the first side walls 12, so that the heat dissipation channels between the first vent 3 and the two second vents 4 are V-shaped, that is, the heat dissipation surface 20 is distributed with heat dissipation channels having different ventilation directions, so that the heat generated by the electronic device during wireless charging can be dissipated in different directions through multiple heat dissipation channels having different ventilation directions, greatly improving the heat dissipation efficiency of the electronic device.

[0054] In some embodiments, the bottom wall 11 of the shell 1 can also be circular, and the first side wall 12, the second side wall 13 and the third side wall 14 are arc-shaped and connected around the bottom wall 11. The second vent 4 is arranged on the second side wall 13 and the third side wall 14. The first vent 3 is arranged on one of the first side walls 12. In order to communicate the first vent 3 and the second vent 4 to form a heat dissipation channel, a circular heat dissipation surface 20 can be arranged on the bottom wall 11. Thus, the air guide groove 5 arranged on the heat dissipation surface 20 will be communicated with the first vent 3 and the second vent 4 to form a heat dissipation channel, and the heat dissipation channels between the first vent 3 and the two second vents 4 are V-shaped, that is, the heat dissipation surface 20 is distributed with heat dissipation channels having different ventilation directions. Thus, the heat generated by the electronic device during wireless charging can be dissipated in different directions through multiple heat dissipation channels having different ventilation directions, greatly improving the heat dissipation efficiency of the electronic device.

[0055] In some embodiments, referring to Figure 3 and Figure 4 , the groove bottom of the air guide groove 5 is circular arc-shaped. This is more conducive to improving the flow of air in the air guide groove 5, so that the cold air blowing into the air guide groove 5 can absorb the heat in the air guide groove 5 and quickly blow out of the air guide groove 5, improving the efficiency of blowing out and dissipating the heat in the air guide groove 5.

[0056] The specific embodiment of the air guide groove 5 can be that a plurality of parallel and spaced air guide grooves 5 are directly punched or cut on the heat dissipation surface 20. The groove bottom of the air guide groove 5 can be formed in a circular arc shape at one time when the air guide groove 5 is made, or the groove bottom of the air guide groove 5 can be polished into a circular arc shape after the air guide groove 5 is formed.

[0057] In some embodiments, referring to Figure 3 and Figure 4 The specific embodiment of the air guide groove 5 can also be that a plurality of parallel and spaced air guide ribs 50 are arranged on the heat dissipation surface 20, and the air guide groove 5 is formed between the adjacent two air guide ribs 50. In this way, the air guide groove 5 can be formed only by arranging the air guide ribs 50 on the plane, and it is easier to adjust the width of the air guide groove 5 and the distance between adjacent air guide grooves 5. The groove bottom of the air guide groove 5 can be polished to be a circular arc shape, or the air guide rib 50 with an arc-shaped concave side surface can be directly used, so that the air guide groove 5 with a circular arc-shaped groove bottom can also be formed between the adjacent two air guide ribs 50.

[0058] In some embodiments, referring to Figure 5 The first air vent 3 is an air inlet, and the second air vent 4 is an air outlet; one side of the heat dissipation surface 20 close to the first air vent 3 is higher than the other side of the heat dissipation surface 20 away from the first air vent 3.

[0059] Since the back of the electronic device is covered on the groove opening of the air guide groove 5 after the electronic device is placed on the heat dissipation surface 20, the heat generated by the electronic device during wireless charging will be transmitted into the air guide groove 5. Through the above arrangement, air is taken in from the first air vent 3 and taken out from the second air vent 4. In actual application of the heat dissipation device 100, an air supply fan can be correspondingly arranged at the first air vent 3. The air supply fan can guide the cold air from the outside to blow into the heat dissipation channel from the first air vent 3. The cold air will absorb the heat in the heat dissipation channel and become hot air, which will then be blown out from the second air vent 4 to take out and dissipate the heat in the heat dissipation channel, which is beneficial to the heat dissipation of the electronic device.

[0060] In order to meet the user's habit of using the electronic device, in actual application, the first air vent 3, i.e. the air inlet, is located at the top of the electronic device, and the second air vent 4, i.e. the air outlet, is located at the left and right sides of the electronic device. In this way, only one air supply fan needs to be installed to realize the blowing of the first air vent 3 to the second air vents 4 located at the two sides of the electronic device, which saves cost and does not increase the size of the heat dissipation device 100, and is beneficial to reducing the installation requirements of the heat dissipation device 100.

[0061] In addition, the side of the heat dissipation surface 20 close to the first air vent 3 is higher than the side of the heat dissipation surface 20 away from the second air vent 4, that is, after the electronic device is placed on the heat dissipation surface 20, the top of the electronic device is higher than the bottom of the electronic device, at this time, the bottom of the electronic device will abut against the first side wall 12 opposite to the first air vent 3, preventing the electronic device from sliding off the heat dissipation surface 20, at the same time, the first air vent 3 located at the top of the electronic device is also higher than the second air vent 4 located at the left and right sides of the electronic device, when blowing air from the first air vent 3 to the second air vent 4, the air is blown from high to low, which can increase the wind speed of the air blown into the heat dissipation channel, which is beneficial to quickly taking out the heat in the heat dissipation channel by the cold air blown into the heat dissipation channel, thereby improving the heat dissipation efficiency of the electronic device.

[0062] Optionally, in addition to the above implementation mode of taking the first air vent 3 as the air inlet and the second air vent 4 as the air outlet, in some embodiments, referring to Figure 6 , the second air vent 4 can also be taken as the air inlet and the first air vent 3 as the air outlet, since the first air vent 3 located at the top of the electronic device is higher than the second air vent 4 located at the left and right sides of the electronic device, when blowing air from the second air vent 4 to the first air vent 3, the air is blown from low to high, although the resistance of the blown air is increased, but there are two air inlets blowing air into the heat dissipation channel at the same time, and the blowing directions of the two air inlets are not opposite, so the heat in the heat dissipation channel can also be quickly taken out and dissipated, thereby improving the heat dissipation efficiency of the electronic device during wireless charging.

[0063] In some embodiments, the first air vent 3 has a plurality of first air vents 3 arranged side by side and spaced apart on the first side wall 12; a plurality of second air vents 4 are arranged on the second side wall 13, and the plurality of second air vents 4 are arranged side by side and spaced apart; a plurality of second air vents 4 are also arranged on the third side wall 14, and the plurality of second air vents 4 are arranged side by side and spaced apart. The number of the second air vents 4 on the second side wall 13 and the third side wall 14 can be the same or different, and the embodiments of the present application do not make specific limitations, and the second air vents 4 on the second side wall 13 and the third side wall 14 can be opposite to each other or staggered with each other, and the embodiments of the present application do not make specific limitations.

[0064] In some embodiments, referring to Figure 7-9 , the heat dissipation surface 20 includes a first region 201 and a second region 202 arranged adjacent to each other, the first region 201 is located between the second side wall 13 and the second region 202, and the first region 201 and the second region 202 are both provided with air guide grooves 5; one end of the air guide groove 5 located in the first region 201 is arranged close to the first air vent 3, and the other end is arranged close to the second side wall 13; one end of the air guide groove 5 located in the second region 202 is arranged close to the first air vent 3, and the other end is arranged close to the third side wall 14.

[0065] Through the above setting, the extension direction of the air guide groove 5 located in the first area 201 is different from the extension direction of the air guide groove 5 located in the second area 202. Since the second side wall 13 and the third side wall 14 are both provided with the second air vent 4, the air blowing direction in the heat dissipation channel formed by the communication of the first air vent 3 and one of the second air vents 4 is different from the air blowing direction in the heat dissipation channel formed by the communication of the first air vent 3 and the other second air vent 4. The air guide groove 5 extending in different directions can smoothly form the heat dissipation channel blowing air in different directions.

[0066] Specifically, the heat dissipation surface 20 is divided into two parts, i.e., the first area 201 and the second area 202. The air guide groove 5 provided on the first area 201 can be a straight groove or a curved groove. The air guide groove 5 provided on the second area 202 can be a straight groove or a curved groove, which is not limited in the embodiments of the present application. The air guide grooves 5 provided on the first area 201 and the second area 202 are arranged at equal intervals, which can make the air guide grooves 5 on the heat dissipation surface 20 arranged in order. The heat generated by the part of the electronic device contacting the first area 201 is dissipated by the heat dissipation channel formed by the communication of the first air vent 3 and the second air vent 4 on the first area 201. The heat generated by the part of the electronic device contacting the second area 202 is dissipated by the heat dissipation channel formed by the communication of the first air vent 3 and the second air vent 4 on the second area 202. The heat generated by different parts of the electronic device is simultaneously dissipated by the heat dissipation channels with different heat dissipation directions, which greatly improves the heat dissipation efficiency.

[0067] In some embodiments, with reference to Figure 7 The heat dissipation surface 20 is used to place an electronic device for wireless charging. At this time, the size and shape of the heat dissipation surface 20 can be set to be the same as the size and shape of the back of the electronic device. Different positions of the back of the electronic device respectively abut the slot of the air guide groove 5 on the first area 201 and the second area 202, that is, the heat generated by the electronic device during wireless charging is transferred into the air guide groove 5 on the first area 201 and the air guide groove 5 on the second area 202. Thus, the heat dissipation channels formed by the communication of the first air vent 3 and the second air vent 4 and the heat dissipation channels formed by the communication of the first air vent 3 and the second air vent 4 on the second area 202 will simultaneously dissipate the heat in the air guide groove 5 in different directions. The entire heat dissipation process will not appear the situation that the cold air blows against each other, causing the heat to gather and cannot be dissipated. The heat dissipation efficiency of the electronic device during wireless charging is greatly improved.

[0068] In some embodiments, with reference to Figure 1 and Figure 8The first region 201 and the second region 202 are provided with a block 6, and the block 6 is connected with the first side wall 12 opposite to the first air vent 3.

[0069] Through the above arrangement, the heat dissipation device 100 can place one electronic device on the first region 201 and place another electronic device on the second region 202, and simultaneously charge the two electronic devices wirelessly, which is more convenient for users to use. In this design, the heat generated by the electronic device placed on the first region 201 during wireless charging is completely transferred to the air guide groove 5 on the first region 201, and the heat dissipation channel formed by the air guide groove 5 on the first region 201 connecting the first air vent 3 and the second air vent 4 dissipates the heat in the air guide groove 5. At the same time, the heat generated by the electronic device placed on the second region 202 during wireless charging is completely transferred to the air guide groove 5 on the second region 202, and the heat dissipation channel formed by the air guide groove 5 on the second region 202 connecting the first air vent 3 and the second air vent 4 dissipates the heat in the air guide groove 5.

[0070] It should be noted that the first region 201 and the second region 202 are provided with a block 6, and the block 6 is connected with the first side wall 12 opposite to the first air vent 3. In this way, the electronic device placed on the first region 201 is surrounded by the first side wall 12, the block 6 and the second side wall 13, and the electronic device placed on the second region 202 is surrounded by the first side wall 12, the block 6 and the third side wall 14, so that the electronic device placed on the first region 201 and the electronic device placed on the second region 202 can be charged wirelessly separately, and the charging will not be interrupted due to movement.

[0071] It can be understood that the block 6 can be arranged in a strip shape, and the extension direction of the block 6 is perpendicular to the first side wall 12. Since the user will inevitably touch the block 6 when taking and placing the electronic device, in order to improve the user experience, a chamfer can be arranged at the connection between the top surface and the side surface of the block 6, or the top surface and the side surface of the block 6 can be connected through a circular surface.

[0072] Two second air vents 4 and one first air vent 3 are arranged in the embodiment of the application, and the air guide groove 5 on the first region 201 and the air guide groove 5 on the second region 202 are connected with different second air vents 4 and the same first air vent 3, that is, the air guide groove 5 on the first region 201 and the air guide groove 5 on the second region 202 are arranged obliquely relative to the first side wall 12. Since the air guide groove 5 is used for blowing cold air to take away the heat in the air guide groove 5, the inclination angle of the air guide groove 5 needs to be reasonably designed to ensure that the first air vent 3 and the second air vent 4 connected by the air guide groove 5 can send air into the air guide groove 5 and make the hot air in the air guide groove 5 blow out.

[0073] If the angle between the extension direction of the air guide 5 and the first side wall 12 is too small, the angle between the axis of the first vent 3 and the extension direction of the air guide 5 will become larger. When the first vent 3 is an air inlet, the resistance when the wind blows into the air guide 5 from the first vent 3 will become larger, resulting in a weakening of the wind force blowing into the air guide 5, reducing the rate at which heat is carried away from the air guide 5, and thus weakening the heat dissipation efficiency of the electronic device during wireless charging.

[0074] If the angle between the extension direction of the air guide 5 and the first side wall 12 is too large, the angle between the axis of the second vent 4 and the extension direction of the air guide 5 will increase. When the second vent 4 is an air outlet, the resistance when the hot air in the air guide 5 is blown out from the second vent 4 will increase, causing the hot air to stay in the air guide 5 for a longer time. The hot air in the air guide 5 cannot be blown out quickly, thereby reducing the rate at which heat is carried away from the air guide 5 and weakening the heat dissipation efficiency of wireless charging of electronic devices.

[0075] Therefore, in this embodiment, the first angle formed between the extending direction of the air guide trough 5 located in the first region 201 and the first sidewall 12 is set to 10° to 80°; the second angle formed between the extending direction of the air guide trough 5 located in the second region 202 and the first sidewall 12 is also set to 10° to 80°. This ensures that the first ventilation opening 3 and the second ventilation opening 4 connected to the air guide trough 5 can deliver air into the air guide trough 5 and blow out the hot air in the air guide trough 5 without affecting the rate at which heat is carried away from the air guide trough 5, thereby improving the heat dissipation efficiency during wireless charging of electronic devices.

[0076] In some embodiments, reference Figure 1 , Figure 7-8 The extension direction of the air guide 5 located in the first region 201 forms a first angle with the first sidewall 12, and the extension direction of the air guide 5 located in the second region 202 forms a second angle with the first sidewall 12. The first angle and the second angle are equal.

[0077] With the above settings, the airflow force and speed passing through the air guide slot 5 in the first region 201 and the air guide slot 5 in the second region 202 are the same, thereby making the heat dissipation rate of the heat absorbed by the air guide slot 5 on the heat dissipation surface 20 more uniform. When only one electronic device can be placed on the heat dissipation surface 20 for wireless charging, the heat of each part of the electronic device can be dissipated quickly and evenly, without damaging the lifespan of the electronic device. In addition, the above settings also make the appearance of the heat dissipation device 100 of this application more aesthetically pleasing when no electronic device is placed on the heat dissipation surface 20.

[0078] Furthermore, in order to further improve the aesthetic appearance of the heat dissipation device 100, refer to Figure 1 ,Figure 7 and Figure 8 The shape and size of the first region 201 and the second region 202 are the same. In this way, the air guide grooves 5 located in the first region 201 are symmetrical with the air guide grooves 5 located in the second region 202, and together form an inverted V shape.

[0079] In some embodiments, referring to Figure 9 The shape of the first region 201 and the second region 202 is the same, and the size is different. When the first region 201 and the second region 202 are respectively placed for wireless charging of different types of electronic devices, the size of the first region 201 and the second region 202 can be set to be different. At this time, the first included angle formed between the extension direction of the air guide groove 5 located in the first region 201 and the first side wall 12 can be equal to the second included angle formed between the extension direction of the air guide groove 5 located in the second region 202 and the first side wall 12, or can be unequal as Figure 9 indicated, as long as it can ensure the smooth flow of air in the heat dissipation channel to dissipate the heat generated by the electronic device.

[0080] In some embodiments, referring to Figure 1 The side edge of the second side wall 13 away from the bottom wall 11 is outwardly folded away from the opening 10, and the side surface of the second side wall 13 close to the bottom wall 11 is curved. In this way, not only can the opening 10 be enlarged to facilitate the user to take and place the electronic device, but also the curved side surface of the second side wall 13 close to the bottom wall 11 can beautify the overall appearance of the heat dissipation device 100.

[0081] In some embodiments, referring to Figure 1 The side edge of the third side wall 14 away from the bottom wall 11 is outwardly folded away from the opening 10, and the side surface of the third side wall 14 close to the bottom wall 11 is curved. In this way, not only can the opening 10 be enlarged to facilitate the user to take and place the electronic device, but also the curved side surface of the third side wall 14 close to the bottom wall 11 can beautify the overall appearance of the heat dissipation device 100.

[0082] In some embodiments, referring to Figure 2 The first side wall 12 opposite to the first vent 3 is provided with a mounting member 7, the mounting member 7 extends along the thickness direction Z of the bottom wall 11, the mounting member 7 is provided with a groove 70, and the slot of the groove 70 is flush with the opening 10.

[0083] Through the above setting, when the heat dissipation device 100 of the present application is installed on the vehicle wireless charging base for use, the installation of the heat dissipation device 100 can be more convenient through the setting of the mounting member 7, and at the same time, the user can place the electronic device or other articles in the groove 70 to ensure that the electronic device or other articles can remain stable during the driving of the automobile, facilitating the user to use.

[0084] Referring toFigure 10 The wireless charging device provided by the embodiment of the present application comprises the heat dissipation device 100 according to any one of the above embodiments and a wireless charging base 200, and the wireless charging base 200 is arranged on the side surface of the bottom wall 11 away from the opening 10.

[0085] The wireless charging device provided by the embodiment of the present application can be a vehicle-mounted wireless charging device, the charging surface of the wireless charging base 200 and the bottom wall 11 of the heat dissipation device 100 are in contact with each other, the electronic device placed on the heat dissipation surface 20 can also achieve the effect of wireless charging, and the heat generated by the electronic device during wireless charging can be transferred into the air guiding groove 5, and the heat is quickly dissipated by blowing cold air into the heat dissipation channel, thereby effectively improving the heat dissipation efficiency of the electronic device during wireless charging.

[0086] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heat dissipating device, characterized by, The application relates to a heat dissipation device, which comprises a shell (1) with an opening (10), the shell (1) comprising a bottom wall (11) arranged opposite to the opening (10) and two first side walls (12), a second side wall (13) and a third side wall (14) connected to the periphery of the bottom wall (11); The two first side walls (12) are arranged opposite to each other, and the second side wall (13) and the third side wall (14) are connected between the two first side walls (12) respectively, wherein a first ventilation opening (3) is arranged on one of the first side walls (12), and a second ventilation opening (4) is arranged on at least one of the second side wall (13) and the third side wall (14); The bottom wall (11) has a heat dissipation surface (20) facing the opening (10), and a plurality of air guide grooves (5) are arranged on the heat dissipation surface (20) in parallel and at intervals, the air guide grooves (5) are located between the first ventilation opening (3) and the second ventilation opening (4), one end of the air guide grooves (5) is communicated with the first ventilation opening (3), and the other end of the air guide grooves (5) is communicated with the second ventilation opening (4) to form a heat dissipation channel.

2. The heat dissipation device according to claim 1, wherein The second ventilation opening (4) is arranged on both the second side wall (13) and the third side wall (14); The heat dissipation surface (20) comprises a first region (201) and a second region (202) arranged adjacent to each other, the first region (201) is located between the second side wall (13) and the second region (202), and the air guide grooves (5) are arranged in the first region (201) and the second region (202); One end of the air guide grooves (5) located in the first region (201) is arranged close to the first ventilation opening (3), and the other end is arranged close to the second side wall (13); One end of the air guide grooves (5) located in the second region (202) is arranged close to the first ventilation opening (3), and the other end is arranged close to the third side wall (14).

3. The heat dissipation device according to claim 2, wherein A first included angle is formed between the extension direction of the air guide grooves (5) located in the first region (201) and the first side wall (12); A second included angle is formed between the extension direction of the air guide grooves (5) located in the second region (202) and the first side wall (12); The first included angle is equal to the second included angle; Alternatively, the first region (201) and the second region (202) are the same in shape and size.

4. The heat dissipation device according to claim 2 or 3, wherein The first included angle formed between the extension direction of the air guide grooves (5) located in the first region (201) and the first side wall (12) is 10-80 degrees; The second included angle formed between the extension direction of the air guide grooves (5) located in the second region (202) and the first side wall (12) is 10-80 degrees.

5. The heat dissipation device according to claim 2 or 3, wherein A baffle (6) is arranged between the first region (201) and the second region (202), and the baffle (6) is connected to the first side wall (12) opposite the first air vent (3).

6. The heat dissipation device according to any one of claims 1-3, characterized in that, the first air vent (3) is an air inlet, and the second air vent (4) is an air outlet; the side of the heat dissipation surface (20) close to the first air vent (3) is higher than the side of the heat dissipation surface (20) away from the first air vent (3).

7. The heat dissipation device according to any one of claims 1-3, characterized in that, the bottom of the air guide groove (5) is in a circular arc shape; and / or, a plurality of air guide ribs (50) are arranged on the heat dissipation surface (20) in parallel and at intervals, and the air guide groove (5) is formed between two adjacent air guide ribs (50).

8. The heat dissipation device according to any one of claims 1-3, characterized in that, the side edge of the second side wall (13) away from the bottom wall (11) is outwardly turned away from the opening (10), and the side surface of the second side wall (13) close to the bottom wall (11) is curved; and / or, the side edge of the third side wall (14) away from the bottom wall (11) is outwardly turned away from the opening (10), and the side surface of the third side wall (14) close to the bottom wall (11) is curved.

9. The heat dissipation device according to any one of claims 1-3, characterized in that, the first side wall (12) opposite the first air vent (3) is provided with a mounting member (7) around the periphery, the mounting member (7) extends along the thickness direction of the bottom wall (11), the mounting member (7) is provided with a groove (70), and the opening of the groove (70) is flush with the opening (10).

10. A wireless charging device, comprising: including: the heat dissipation device (100) according to any one of claims 1-9; a wireless charging base (200) arranged on the side surface of the bottom wall (11) away from the opening (10).

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