WO2021217366A1

WO2021217366A1 - Radiator, heat dissipation structure and unmanned aerial vehicle

Info

Publication number: WO2021217366A1
Application number: PCT/CN2020/087315
Authority: WO
Inventors: 黄昆; 林晓龙
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2021-11-04
Also published as: CN112823575A; CN112823575B

Abstract

Disclosed is a radiator (10), comprising a base (12) and a plurality of radiating fins (14). The base (12) comprises a first face (121) and a second face (122) that are opposite each other, the plurality of radiating fins (14) are arranged on the first face (121), the plurality of radiating fins (14) extend in the direction from a first side edge (123) to a second side edge (124) of the base (12) to form a first flow channel (140), and the plurality of radiating fins (14) are spaced from the second side edge (124) of the base (12) to form a second flow channel (150).

Description

Radiator, heat dissipation structure and drone

Technical field

This application relates to the field of heat dissipation technology, and in particular to a radiator, a heat dissipation structure and an unmanned aerial vehicle.

Background technique

UAVs have been widely used in daily life and various industries. With the development of electronic technology, the degree of integration of electronic components, such as circuit boards, sensors, capacitors, resistors, etc., has become higher and higher. The size of electronic components has become smaller and smaller, and the heat flux density of electronic components has also increased. Come higher. When these electronic components are applied to miniaturized products (drones), the narrow space structure inside the product is not conducive to the heat dissipation of the electronic components. Temperature is a key factor affecting the reliability of electronic components. As the temperature increases, the failure rate of electronic components will increase geometrically. Therefore, how to quickly and effectively dissipate the electronic components has become an urgent problem to be solved.

Summary of the invention

The embodiments of the present application provide a radiator, a heat dissipation structure, and an unmanned aerial vehicle.

The heat sink of the embodiment of the present application includes a base and a plurality of heat sinks. The base includes a first surface and a second surface opposite to each other. The plurality of heat sinks are arranged on the first surface of the base, and the plurality of heat sinks extend from the first side edge to the second side edge of the base to form a first flow channel. The plurality of heat sinks are spaced from the second side edge of the base for forming a second flow channel. The first side edge is opposite to the second side edge, the first flow channel intersects the second flow channel, the second flow channel includes two ends, and the fluid approaches the first flow channel from the heat sink. One end of the side edge flows into the first flow channel, and flows to at least one end of the second flow channel after passing through the plurality of heat sinks.

The heat dissipation structure of the embodiment of the present application includes a heat sink and a first housing. The heat sink includes a base and a plurality of heat sinks. The base includes a first surface and a second surface opposite to each other. The plurality of heat sinks are arranged on the first surface of the base, and the plurality of heat sinks extend from the first side edge to the second side edge of the base to form a first flow channel. The plurality of heat sinks are spaced from the second side edge of the base for forming a second flow channel. The first side edge is opposite to the second side edge, the first flow channel intersects the second flow channel, the second flow channel includes two ends, and the fluid approaches the first flow channel from the heat sink. One end of the side edge flows into the first flow channel, and flows to at least one end of the second flow channel after passing through the plurality of heat sinks. The first housing and the base are combined to form a circulation space, and a plurality of the heat sinks are located in the circulation space.

The drone of the embodiment of the present application includes a heat dissipation structure and a second housing. The heat dissipation structure includes a heat sink and a first housing. The heat sink includes a base and a plurality of heat sinks. The base includes a first surface and a second surface opposite to each other. The plurality of heat sinks are arranged on the first surface of the base, and the plurality of heat sinks extend from the first side edge to the second side edge of the base to form a first flow channel. The plurality of heat sinks are spaced from the second side edge of the base for forming a second flow channel. The first side edge is opposite to the second side edge, the first flow channel intersects the second flow channel, the second flow channel includes two ends, and the fluid approaches the first flow channel from the heat sink. One end of the side edge flows into the first flow channel, and flows to at least one end of the second flow channel after passing through the plurality of heat sinks. The first housing and the base are combined to form a circulation space, and a plurality of the heat sinks are located in the circulation space. The first housing and the second housing are combined to form an accommodating space, and the radiator is located in the accommodating space.

In the heat sink, heat dissipation structure, and drone of the embodiments of the present application, since the fluid flows into the first flow channel from the end of the heat sink close to the first side edge, and flows to at least one end of the second flow channel after passing through a plurality of heat sinks, When the electronic components are in contact with the radiator so that the heat generated by the electronic components is conducted to the heat sink, the heat on the heat sink can be carried by the fluid and dissipated from at least one end of the second flow path to the outside, thereby enabling the electronic components Effective heat dissipation.

The additional aspects and advantages of the embodiments of the present application will be partly given in the following description, and part of them will become obvious from the following description, or be understood through the practice of the present application.

Description of the drawings

The above-mentioned and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 is a three-dimensional schematic diagram of a heat sink according to some embodiments of the present application;

Fig. 2 is a three-dimensional schematic diagram of the heat sink in Fig. 1 from another perspective;

3 to 7 are schematic diagrams of the planar structure of a plurality of heat sinks of the heat sink in some embodiments;

FIG. 8 is a schematic plan view of a fan in a heat dissipation structure of some embodiments of the present application;

FIG. 9 is an exploded schematic diagram of a heat dissipation structure of some embodiments of the present application;

FIG. 10 is an exploded schematic view of the heat dissipation structure in FIG. 9 from another perspective;

FIG. 11 is a schematic diagram of a three-dimensional assembly of a drone according to some embodiments of the present application

Fig. 12 is a partial three-dimensional exploded schematic view of the drone in Fig. 11.

Fig. 13 is an enlarged schematic diagram of part A of the drone in Fig. 11.

Fig. 14 is an enlarged schematic diagram of part B of the drone in Fig. 11.

Detailed ways

The implementation of the present application will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings indicate the same or similar elements or elements with the same or similar functions throughout.

In addition, the implementation manners of the present application described below in conjunction with the drawings are exemplary, and are only used to explain the implementation manners of the present application, and should not be construed as limiting the application.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than the second feature. The “below”, “below” and “below” of the second feature of the first feature may be that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Please refer to FIG. 1 and FIG. 2, an embodiment of the present application provides a heat sink 10. The heat sink 10 includes a base 12 and a plurality of heat sinks 14. The base 12 includes a first surface 121 and a second surface 122 opposite to each other. A plurality of radiating fins 14 are provided on the first surface 121 of the base 12, and the plurality of radiating fins 14 extend along the direction from the first side edge 123 to the second side edge 124 of the base 12 to form a first flow channel 140. The sheet 14 is spaced from the second side edge 124 of the base 12 to form a second flow channel 150, the first side edge 123 is opposite to the second side edge 124, the first flow channel 140 intersects the second flow channel 150, and the second The flow channel 150 includes two ends. The fluid flows into the first flow channel 140 from an end of the heat sink 14 close to the first side edge 123, and flows to at least one end of the second flow channel 150 after passing through the plurality of heat sinks 14.

The second flow channel 150 is formed by the interval between the edge of the heat sink 14 and the second side edge 124 of the base 12. Each heat sink 14 is elongated, and the length direction of each heat sink 14, that is, the extending direction of each heat sink 14, is substantially the same as the direction from the first edge 123 to the second edge 124. A sub-flow channel 142 is formed between every two adjacent heat sinks 14.

Each sub-flow channel 142 is in communication with the second flow channel 150 so that the heat flow passing through each sub-flow channel 142 can be discharged through both ends of the second flow channel 150.

In the heat sink 10 of the embodiment of the present application, since the fluid flows from the end of the heat sink 14 close to the first side edge 123 into the first flow channel 140 and flows through the plurality of heat sinks 14 to at least one end of the second flow channel 150, when When the electronic component 16 is in contact with the heat sink 10 so that the heat generated by the electronic component 16 is conducted to the heat sink 14, the heat on the heat sink 14 can be carried by the fluid and dissipated from at least one end of the second flow channel 150 to the outside. The effective heat dissipation of the electronic components 16 can be realized.

It should be noted that the fluid in this article includes wind and liquid, such as rain water. When the fluid is wind, the temperature of the wind before entering the first runner 140 is lower than the heat generated by the electronic components 16. When the cold wind flows into the first runner 140 and passes through the heat sink 14, it can take away the heat on the heat sink 14 It is converted into hot air with a higher temperature, and the hot air carrying the heat flows to the second flow channel 150 and can flow out from at least one end of the second flow channel 150 to the outside, thereby dissipating the heat. Similarly, when the fluid is liquid, such as rainwater, the temperature of the rainwater is relatively low. When it flows into the first flow channel 140 and passes through the heat sink 14, it can take away the heat on the heat sink 14, and the rainwater carrying the heat flows to the second The flow channel 150 may flow out from at least one end of the second flow channel 150 to the outside, thereby dissipating heat. When the fluid includes both wind and liquid (such as rain water), when cold wind and rain water both flow into the first flow channel 140 and pass through the heat sink 14, the heat on the heat sink 14 can be taken away, and the wind and rain water carrying the heat flow to the first flow channel 140. The second runner 150 can flow out from at least one end of the second runner 150 to the outside, so as to dissipate the heat, and the heat dissipation effect is better.

Specifically, please continue to refer to FIGS. 1 and 2, the base 12 includes a first side edge 123, a second side edge 124, a third side edge 125 and a fourth side edge 126. The first side edge 123, the third side edge 125, the second side edge 124, and the fourth side edge 126 are successively connected end to end. The first side edge 123 is opposite to the third side edge 125, and the second side edge 124 is opposite to the fourth side edge. The side edges 126 are opposite. Two ends of the second flow channel 150 are respectively located at the third side edge 125 and the fourth side edge 126. More specifically, the second flow channel 150 includes a first end 1502 and a second end 1504, the first end 1502 is located at the third side edge 125, and the second end 1504 is located at the fourth side edge 126. The fluid flows from the end of the heat sink 14 close to the first side edge 123 into the first flow channel 140, passes through the plurality of heat sinks 14 and then flows to the first end 1502 and/or the second end 1504 of the second flow channel 150.

The peripheral edge of the first surface 121 of the base 12 may be provided with a first coupling member 127, and the first coupling member 127 is used to cooperate with the external second coupling member 24 (shown in FIG. 10) to enclose the peripherally closed circulation space 120 . In an example, the first coupling member 127 may be a ring of annular grooves surrounding the periphery and opened on the first surface 121, or may be a ring of sealing members surrounding the periphery and extending from the first surface 121. The seal The piece can be a rubber ring or the like.

The second surface 122 of the base 12 is provided with electronic components 16, and the electronic components 16 may include, but are not limited to, circuit boards, various types of sensors, control chips, capacitors, resistors, inductors, and the like. With the development of electronic technology, the degree of integration of the electronic components 16 is getting higher and higher, the size of the electronic components 16 is getting smaller and smaller, and the heat flux density of the electronic components is also getting higher and higher. When these electronic components 16 are applied to miniaturized products (for example, the UAV 1000 shown in FIG. 11), the narrow space structure inside the UAV 1000 is not conducive to the heat dissipation of the electronic components 16. In the heat sink 10 of the present application, the electronic component 16 can be arranged on the second surface 122 of the base 12. When the electronic component 16 is working, the heat generated can be conducted to the heat sink 14 through the base 12 and then flowed into The fluid in the first flow channel 140 is carried and dispersed from at least one end of the second flow channel 150 to the outside, thereby enabling effective heat dissipation of the electronic components 16.

The base 12 is provided with at least one diversion hole 1282 penetrating through the first surface 121 and the second surface 122, and the at least one diversion hole 1282 is provided corresponding to at least one of the two ends of the second flow channel 150. The diversion hole 1282 is located in the circulation space 120, and the circulation space 120 circulates with the external environment through the diversion hole 1282. In this way, the diversion hole 1282 can be used to enter the circulation space 120 (the side where the first surface 121 of the base 12 is located) The liquid is discharged to the outside to prevent the liquid from entering the side where the second surface 122 of the base 12 is located and affecting the normal operation of the electronic component 16. More specifically, the base 12 includes at least one lug 128 extending from the second side edge 124 toward away from the heat sink 14, and the at least one lug 128 corresponds to the at least one diversion hole 1282 and is located at both ends of the first side edge 123 At least one end of the at least one guide hole 1282 is provided on the corresponding lug 128. In this embodiment, the number of lugs 128 is two, and the number of diversion holes 1282 is also two, and each lug 128 is provided with a diversion hole 1282. In one example, in the direction away from the second side edge 124, the width of the lug 128 gradually becomes smaller, and the width of the lug 128 gradually becomes smaller. The lug 128 has a stronger guiding effect, and the liquid (such as rain) can be more easily introduced. Into the diversion hole 1282 and further discharged to the outside.

In some embodiments, the second surface 122 of the base 12 may be provided with a diversion column 129, and the diversion column 129 is disposed around the diversion hole 1292. The diversion column 129 can be used to guide the liquid entering the diversion hole 1282 to the outside, to prevent the liquid from entering the side where the second surface 122 of the base 12 is located and affecting the normal operation of the electronic component 16, and further ensuring the operation of the electronic component 16 stability.

The base 12 includes a first long axis OO1 that is consistent with the length direction. In one example, the base 12 is symmetrical about the first long axis OO1. The base 12 with a symmetrical structure is more convenient to process and easier to manufacture. In other examples, the base 12 may not be symmetrical about the first long axis OO1. In addition, the base 12 can be made of metal materials with high thermal conductivity such as copper, aluminum, iron, steel, etc., or can be made of non-metallic materials with high thermal conductivity, such as carbon fiber, and made of materials with high thermal conductivity. 12, so that the heat generated by the electronic components 16 can be quickly transferred to the heat sink 14, thereby speeding up the heat dissipation.

Please continue to refer to FIGS. 1 and 2, a plurality of heat sinks 14 are provided on the first surface 121 of the base 12, and a mounting position 152 is reserved between the plurality of heat sinks 14 and the first side edge 123, and the mounting position 152 is used for Install the fan 18 (shown in FIG. 8), and the fluid from the installation position 152 flows from the end of the heat sink 14 close to the first side edge 123 into the first flow channel 140, passes through the plurality of heat sinks 14 and then flows to two parts of the second flow channel 150. end.

In one embodiment, the projections of the plurality of heat sinks 14 on the second surface 122 can cover the electronic components 16 so that the heat generated by the electronic components 16 can be quickly transferred to the heat sinks 14 to speed up the heat dissipation. Of course, in other ways, the projections of the plurality of heat sinks 14 on the second surface 122 may partially cover the electronic components 16, that is, part of the electronic components 16 may be located on the second surface 122 of the plurality of heat sinks 14 Outside the projection range, at this time, the electronic components 16 that are partly located outside the projection range of the plurality of heat sinks 14 on the second surface 122 can still be conducted to the plurality of heat sinks 14 through the base 12.

In one embodiment, the plurality of heat sinks 14 may be symmetrically distributed about the first long axis OO1, so that the layout of the heat sink 14 and the electronic components 16 can be referenced to the first long axis OO1, which is more convenient to design.

Please refer to Figures 1 and 3 together. Each heat sink 14 is a long strip. The length direction of each heat sink 14, that is, the extension direction of each heat sink 14, and from the first edge 123 to the second edge 124 The direction is basically the same. A sub-flow channel 142 is formed between every two adjacent heat sinks 14. In one embodiment, the widths W of the plurality of sub-runners 142 are all the same. Taking the number of the plurality of heat sinks 14 in FIG. 3 as an example for description, the widths W of the 12 heat sinks 14 are all the same. Designing multiple heat sinks 14 with equal width makes the fluid flow rate and flow velocity of the first flow channel 140 uniform. No matter where the electronic components 16 corresponding to the heat sink 14 are distributed on the projection of the heat sink 14 on the second surface 122, The heat can be dissipated, and the heat dissipation efficiency of the electronic components 16 in different areas is not much different, so that the electronic components 16 with slow heat dissipation are prevented from transferring the heat to the electronic components 16 with fast heat dissipation.

Please continue to refer to FIG. 3, in some embodiments, from the first long axis OO1 of the base 12 to the third side edge 125 or the fourth side edge 126 of the base 12, the length of the heat sink 14 gradually decreases. As a result, there are more effective heat dissipation parts close to the first long axis OO1, and more heat will be collected. Therefore, the second surface 122 corresponding to the part close to the first long axis OO1 can be provided with more electronic components 16 to ensure this The heat dissipation efficiency of some electronic components 16.

In one embodiment, the widths of the plurality of sub-flow channels 142 are not all the same. For example, taking the number of the plurality of heat sinks 14 in FIG. 4 as an example for description, the direction from the first long axis OO1 of the base 12 to the third side edge 125 or the fourth side edge 126 of the base 12 , The widths of the plurality of sub-flow channels 140 are successively decreased. Specifically, in the direction from the first long axis OO1 of the base 12 to the third side edge 125 of the base 12, the plurality of radiating fins 14 form five sub-flow channels 142, and the widths of the five sub-flow channels 142 gradually increase, that is, W2>W3>W4>W5>W6. In this embodiment, the width W1 of the sub-flow channel 140 formed by the two heat sinks 14 closest to the first long axis OO1 and distributed on both sides of the first long axis OO1 is greater than W2. At the same time, from the first long axis OO1 of the base 12 to the third side edge 125 or the fourth side edge 126 of the base 12, the length of the heat sink 14 gradually decreases. Since the widths of the plurality of sub-flow channels 140 are gradually reduced in the direction from the first long axis OO1 of the base 12 to the third side edge 125 or the fourth side edge 126 of the base 12, the widths of the sub-flow channels 140 close to the first long axis OO1 More heat accumulated in the area of the heat sink 14 (with more effective heat dissipation parts) can be cooled by a larger flow of fluid, thereby improving heat dissipation efficiency.

The sub-flow channel 142 located on the first long axis OO1 is substantially communicated with the middle of the second flow channel 150 so that the heat flow passing through the heat sink 14 can flow out through both ends of the second flow channel 150.

In one embodiment, as shown in FIGS. 3 and 4, the plurality of sub-flow channels 140 extend linearly. At this time, the extending direction of the heat sink 14 is also straight, the structure is simple, and the manufacturing is easy.

In one embodiment, as shown in FIG. 5, a plurality of sub-flow channels 140 extend in a curve. At this time, the curved sub-flow channel 140 is more flexible when integrated with the whole machine, and can flexibly avoid other components.

In one embodiment, referring to FIG. 3, the extending direction of at least one sub-flow channel 142 is parallel to the first long axis OO1 of the base 12.

In one embodiment, referring to FIG. 6, at least one sub-flow channel 142 of the plurality of sub-flow channels 142 extends in a straight line, and the angle between the straight-line extending sub-flow channel 142 and the first long axis OO1 is not zero.

In one embodiment, please refer to FIGS. 1 and 7 together. One sub-flow channel 142 of the plurality of sub-flow channels 142 includes at least a first section 1422 close to the first side edge 123 and a second section 1422 close to the second side edge 124. In section 1424, the angle between the first section 1422 and the first long axis OO1 of the base 12 is smaller than the angle between the second section 1424 and the first long axis OO1. This structural design can increase the flow rate of the fluid reaching the second flow channel 150, so that heat dissipation and drainage are more rapid and thorough. If the extension direction of the sub-flow channel 142 is a straight extension, the angle here refers to the angle between the first section 1422 and the second section 1424; if the extension direction of the sub-flow channel 142 is a curve, the angle here refers to The angle between the tangent of the first segment 1422 and the tangent of the second segment 1424.

In one embodiment, please continue to refer to FIGS. 1 and 7 together. One sub-flow channel 142 of the plurality of sub-flow channels 142 includes at least a first section 1422 close to the first side edge 123 and a first section 1422 close to the second side edge 124. For the second section 1424, the width W8 of the second section 1424 is greater than the width W7 of the first section 1422. W8>W7, so that the flow rate of the fluid reaching the second flow channel 150 can be increased, so that the heat dissipation and drainage are more rapid and thorough.

In one embodiment, referring to FIG. 6, the opening width of the sub-flow channel 142 located on the first long axis OO1 gradually decreases and increases from the side close to the first side edge 123 to the side close to the second side edge 124. This structural design can increase the flow rate of the fluid reaching the second flow channel 150, so that heat dissipation and drainage are more rapid and thorough.

1 and 6 together, in one embodiment, the sub-flow channel 142 located on the side of the first long axis OO1 is inclined toward the third side edge 125 of the base 12 compared to the first long axis OO1, and is located The sub-flow channel 142 on the other side of the first long axis OO1 is inclined toward the fourth side edge 126 of the base 12 compared to the first long axis OO1, so as to be formed on the side of the plurality of heat sinks 14 close to the second side edge 123 The diversion opening 144. In one example, the diversion opening 144 is trapezoidal. In another example, the diversion opening 144 is triangular. The opening of the diversion opening 144 can increase the flow rate to the second flow channel 150, so that the heat dissipation and drainage are more rapid and thorough. Moreover, the shape of the diversion opening 144 is an expanded triangle or trapezoid, which can further increase the flow rate to the second flow channel 150 and improve the heat dissipation efficiency and drainage efficiency.

Referring to FIG. 7, in one embodiment, each sub-flow channel 142 includes at least a first section 1422 close to the first side edge 123 and a second section 1424 close to the second side edge 124. In the same sub-flow channel 142, The second section 1424 located on one side of the first long axis OO1 is inclined toward the third side edge 125 of the base 12 compared to the first long axis OO1, and the second section 1424 located on the other side of the first long axis OO1 is relatively The first long axis OO1 is inclined toward the fourth side edge 126 of the base 12 to form a diversion opening 144 on the side of the plurality of heat sinks 14 close to the second side edge 124. In one example, the diversion opening 144 is trapezoidal. In another example, the diversion opening 144 is triangular. The opening of the diversion opening 144 can increase the flow rate to the second flow channel 150, so that the heat dissipation and drainage are more rapid and thorough. Moreover, the shape of the diversion opening 144 is an expanded triangle or trapezoid, which can further increase the flow rate to the second flow channel 150 and improve the heat dissipation efficiency and drainage efficiency.

Please refer to 1 and FIG. 8 together. In some embodiments, the radiator 10 may further include a fan 18. The fan 18 is installed at the installation position 152 and is used to guide fluid to a plurality of heat sinks 14. Specifically, the fan 18 may be a centrifugal fan, and includes an inlet 182 and an outlet 184. The inlet 182 is opened on the surface 181 of the fan 18 parallel to the first surface 121 of the base 12, and fluid is sucked into the fan 18 from the inlet 182, and from The outlet 184 blows out and guides the plurality of radiating fins 14. The fan 18 can actively suck in external fluid, such as wind, so that the flow rate of the fluid entering the first channel 140 and the second channel 15 is greatly increased, so that the heat dissipation efficiency of the radiator 10 can be improved.

Please refer to FIG. 9 and FIG. 10, an embodiment of the present application also provides a heat dissipation structure 100. The heat dissipation structure 100 includes the heat sink 10 and the first housing 20 of any of the above embodiments. The first housing 20 and the base 12 are combined to form the aforementioned circulation space 120, and a plurality of heat sinks 14 are located in the circulation space 120. The base 12, the first housing 20 and the plurality of heat sinks 14 form a first flow channel 140, and the base 12, the first housing 20 and the interval form a second flow channel 150. Wherein, the first housing 20 and the base 12 can be connected together by screw connection, gluing, clamping, welding, or the like.

Specifically, the first housing 20 includes a first area 201 and a second area 202 extending obliquely outward from both sides of the first area 201. The first housing 20 includes a second long axis OO2.

The first end 21 of the first housing 20 is provided with an inlet 212, the inlet 212 is arranged in the first area 201, the inlet 212 is symmetrical about the second long axis 002, and external fluid enters the circulation space 120 from the inlet 212.

The inlet 212 includes a first sub-inlet 2121 and a second sub-inlet 2123. The first sub-inlet 2121 is spaced from the second sub-inlet 2123. In the direction of the second long axis OO2, the first sub-inlet 2121 is compared with the second sub-inlet 2123 is closer to the edge of the first housing 20. The surface 2120 of the first housing 20 where the first sub-inlet 2121 is opened is at a certain angle to the first surface 121. The second sub-inlet 2123 is elongated, and the extending direction of the second sub-inlet 2123 is consistent with the direction of the second long axis OO2.

In some embodiments, the first region 201 of the first housing 20 is further provided with a first guide channel 2122. The first guide channel 2122 is in communication with the first sub-inlet 2121, in the direction of the second long axis 002, The first flow guide 2122 is closer to the edge of the first housing 20 than the first sub-inlet 2121, and the first flow guide 2122 is used to guide the external fluid to the first sub-inlet 2121.

In some embodiments, the first sub-inlet 2121 is provided with a first filter 214 (shown in FIG. 13). The first filter 214 is used to filter impurities to prevent impurities from entering the circulation space 120 and accumulating, thereby reducing heat dissipation efficiency and / Or drainage efficiency. In some embodiments, a second filter 216 (shown in FIG. 13) is provided on the second sub-inlet 2123, and the second filter 216 is used to filter impurities to prevent impurities from entering the circulation space 120 and accumulating, thereby reducing heat dissipation efficiency and / Or drainage efficiency. In some embodiments, the first sub-inlet 2121 is provided with a first filter 214 (shown in FIG. 13), and the second sub-inlet 2123 is also provided with a second filter 216 (shown in FIG. 13), so as to change It prevents impurities from entering and accumulating in the circulation space 120 to ensure heat dissipation efficiency and/or drainage efficiency.

Please continue to refer to FIGS. 9 and 10, the second end 22 of the first housing 20 is provided with a first outlet 222 and a second outlet 224, and the first outlet 222 and the second outlet 224 are respectively located on opposite sides of the second end 22 , The first outlet 222 and the second outlet 224 correspond to two ends of the second flow channel 150. In an example, the first outlet 222 and the second outlet 224 are symmetrical about the second long axis OO2.

In some embodiments, the second area 202 of the first housing 20 is further provided with a second guide channel 2220, and the second guide channel 2220 is in communication with the first outlet 222, in a direction perpendicular to the second long axis 002, The second flow guide 2220 is closer to the edge of the first housing 20 than the first outlet 222, and the second flow guide 2220 is used to guide external fluid to the first outlet 222.

In some embodiments, the second area 202 of the first housing 20 is further provided with a third guide channel 2240, and the third guide channel 2240 communicates with the second outlet 224, in a direction perpendicular to the second long axis OO2, The third flow guide 2240 is closer to the edge of the first housing 20 than the second outlet 224, and the third flow guide 2240 is used to guide the external fluid to the second outlet 224.

In some embodiments, a third filter screen (not shown) is provided on the first outlet 222, and the third filter screen is used to filter impurities to prevent impurities from entering the circulation space 120 and accumulating, thereby reducing heat dissipation efficiency and/or drainage efficiency . In some embodiments, a fourth filter 227 (shown in FIG. 14) is provided on the second outlet 224, and the fourth filter 227 is used to filter impurities to prevent impurities from entering the circulation space 120 and accumulating, thereby reducing heat dissipation efficiency and/ Or drainage efficiency. In some embodiments, the first outlet 222 is provided with a third filter screen, and the second outlet 224 is provided with a fourth filter screen 227 to better prevent impurities from entering the circulation space 120 and accumulating, ensuring heat dissipation efficiency and/ Or drainage efficiency.

The projection of the first outlet 222 on the first surface 121 of the base 12 is closer to the third edge 125 and the second edge 124 of the base 12 than the plurality of heat sinks 14. The second outlet 224 is on the first surface of the base 12 The projection on one surface 121 is closer to the fourth edge 126 and the second edge 124 of the base 12 than the plurality of heat sinks 14. In an example, the surface 221 of the first housing 20 where the first outlet 222 is opened is inclined relative to the first surface 121 of the base 12, that is, the surface 221 of the first housing 20 where the first outlet 222 is opened is opposite to the first surface 221 121 is at a certain angle (greater than zero). In an example, the surface 223 of the first housing 20 where the second outlet 224 is opened is inclined relative to the first surface 121 of the base 12, that is, the surface 223 of the first housing 20 where the second outlet 224 is opened is opposite to the first surface. 121 is at a certain angle (greater than zero). In an example, the surface 221 of the first housing 20 where the first outlet 222 is formed is inclined relative to the first surface 121 of the base 12, and the surface 222 of the first housing 20 where the second outlet 224 is formed is relatively inclined to the base 12 The first surface 121 of 12 is inclined.

When the peripheral edge of the base 12 is provided with a first coupling member 127, the peripheral edge of the first housing 20 is provided with a second coupling member 24 corresponding to the first coupling member 127. If the first coupling member 127 is a ring of annular grooves surrounding the periphery and opened on the first surface 121, the second coupling member 24 is a ring of sealing members extending around the periphery of the first housing 20, and the sealing member may It is a rubber ring and so on. Or, if the first coupling member 127 surrounds the periphery and a ring of sealing members extending from the first surface 121, the second coupling member 24 is a ring-shaped channel surrounding the periphery of the first housing 20.

Please refer to FIG. 8, after the first housing 20 and the base 12 are combined together, the first coupling member 127 and the second coupling member 24 cooperate to enclose the circulation space 120 closed by the periphery. At this time, if the heat dissipation structure 100 includes the fan 18, the fan 18 is installed at the installation position 152, and the outside environment cold wind (compared to the temperature of the electronic component 16 when the electronic component 16 is working) enters the circulation space 120 from the inlet 212, and the fan 18 works The cold air is sucked into the inside of the fan 18 from the inlet 182, and then blown out from the outlet 184 and guided to the plurality of heat sinks 14 into the first flow channel 140. The heat generated by the electronic components 16 and transferred to the heat sink 14 is entered into the first channel 140 The cold air is carried by the cold air, and the cold air becomes hot air and spreads to the outside from at least one end of the second runner 150. Specifically, the hot air can be dissipated from the first outlet 222 and/or the second outlet 224 to the outside, thereby enabling effective heat dissipation of the electronic components 16.

During the heat dissipation process, since the surface 221 of the first housing 20 with the first outlet 222 is inclined relative to the first surface 121 of the base 12, and/or the surface 222 of the first housing 20 with the second outlet 224 is relatively The first surface 121 of the base 12 is inclined to make the hot air flow out more smoothly and further improve the heat dissipation efficiency.

When the heat dissipation structure 100 is inclined so that the first outlet 222 is changed from the outlet air to the inlet air, since the first outlet 222 and the second outlet 224 are connected, the cold air entering from the first outlet 222 can directly circulate out of the second outlet 224 Therefore, the cold air guided by the fan 18 to the first flow channel 140 will not be offset, thereby ensuring the heat dissipation efficiency of the heat dissipation structure 100. Similarly, when the heat dissipation structure 100 is inclined so that the second outlet 224 is changed from outlet to inlet, since the first outlet 222 and the second outlet 224 are connected, the cold air entering from the second outlet 224 can directly pass from the first outlet The flow of 222 out will not offset the cold air that the fan 18 guides to the first flow channel 140, so that the heat dissipation efficiency of the heat dissipation structure 100 can also be ensured.

When the heat dissipating structure 100 is inclined so that the first outlet 222 is changed from the outlet air to the inlet air, the cold air entering from the first outlet 222 can directly circulate out of the second outlet 224, so that the fluid flows from the heat sink 14 to the second flow channel 150 The end corresponding to the second outlet 224 and circulates to the outside through the second outlet 224; when the heat dissipation structure 100 is inclined so that the second outlet 224 changes from the outlet air to the inlet air, the cold air entering from the second outlet 224 can be Circulate directly from the first outlet 222, so that the fluid flows from the heat sink 14 to the end of the second flow channel 150 corresponding to the first outlet 222, and circulates to the outside through the first outlet 222; when the heat dissipation structure 100 is in When relatively stable, both the first outlet 222 and the second outlet 224 can be used as air outlets, so that the fluid flows from the heat sink 14 to the two ends of the second flow channel 150, and circulates through the first outlet 222 and the second outlet 224. outside world.

Outside liquid, such as rainwater, enters the circulation space 120 from the inlet 212, enters the first channel 140 from the end of the heat sink 14 close to the first side edge 123, is guided by the heat sink 14 to the second flow channel 150, and can pass from the second channel. At least one end of the runner 150 is scattered to the outside. Specifically, rainwater can be discharged from the diversion hole 1282 of the lug 128 to the outside, so as to prevent rainwater from entering the side where the second surface 122 of the base 12 is located and affecting the normal operation of the electronic component 16. It should be pointed out that during the draining process, rainwater can also take away part of the heat on the heat sink 14, thereby further improving the heat dissipation efficiency. Therefore, the UAV 1000 can also ensure the stability of the work when working in harsh environments such as rainy weather.

Please refer to FIG. 1, FIG. 11, and FIG. 12 together. The embodiment of the present application also provides a drone 1000. The drone 1000 includes the heat dissipation structure 100 and the second housing 200 of any of the above embodiments. The first housing 20 and the second housing 200 are combined to form an accommodating space 300, and the radiator 10 is located in the accommodating space 300. The unmanned aerial vehicle 1000 may further include a flow guide 203 which communicates with the base 12 and the outside. The air guide 203 penetrates the second housing 200 to guide the liquid entering the base 12 from the outside to the outside from the second housing 200. In an example, the flow guide 203 is a cylindrical structure with through holes, and the flow guide column 129 cooperates with the flow guide 203 to drain the liquid flowing into the flow guide column 129 from the flow guide 203 to the second housing 200 Outside. In an example, the deflector 129 extends into the deflector 203, that is, the deflector 203 is sleeved on the outer peripheral wall of the deflector 129. At this time, there may be provided between the deflector 129 and the deflector 203. The sealing ring 130 prevents liquid from flowing into the containing space 300 and affecting the normal operation of the electronic components contained in the containing space 300. In another example, the deflector 203 extends into the deflector 129, that is, the deflector 129 is sleeved on the outer peripheral wall of the deflector 203. At this time, the deflector 129 and the deflector 203 can still be separated from each other. A sealing ring 130 is provided to prevent liquid from flowing into the containing space 300 and affecting the normal operation of the electronic components contained in the containing space 300. The first housing 20 and the second housing 200 can form the fuselage 400 of the drone 1000.

In one embodiment, the first housing 20 corresponds to the upper part of the fuselage 400 of the drone 1000, and the second housing 200 corresponds to the lower part of the fuselage 400 of the drone 1000. In another embodiment, the first housing 20 corresponds to the lower part of the fuselage 400 of the drone 1000, and the second housing 200 corresponds to the upper part of the fuselage 400 of the drone 1000. In yet another embodiment, the first housing 20 corresponds to a part of the side of the fuselage 400 of the drone 1000, and the second housing 200 corresponds to another part of the side of the fuselage 400 of the drone 1000.

In one embodiment, the number of inlets 212 may be one or more, and they are located at the nose of the drone 1000.

In one embodiment, the number of the first outlet 222 may be one or more, and it is located at the tail of the drone 1000. The number of the second exit 224 may be one or more, and it is also located at the tail of the UAV 1000.

In one embodiment, a third exit (not shown in the figure) is provided at the tail of the drone 1000, and the third exit is directly opposite to the entrance 212. At this time, after passing through the first passage 140, the cold air can also directly flow out from the third outlet to improve the heat dissipation efficiency.

The drone 1000 further includes a power system 500, and the power system 500 includes a motor 501 and a propeller 502. When the motor 501 drives the propeller 502 to rotate and drives the fuselage 400 to tilt, and make the first outlet 222 change from the outlet wind to the inlet wind, the cold air entering from the first outlet 222 can directly circulate out of the second outlet 224, thereby causing fluid It flows from the heat sink 14 to the end of the second flow channel 150 corresponding to the second outlet 224, and circulates to the outside through the second outlet 224. When the motor 501 drives the propeller 502 to rotate and drives the fuselage 400 to tilt, and causes the second outlet 224 to change from the outlet air to the inlet air, the cold air entering from the second outlet 224 can directly circulate out of the first outlet 222, thereby making fluid It flows from the heat sink 14 to the end of the second flow channel 150 corresponding to the first outlet 222, and circulates to the outside through the first outlet 222. When the motor 501 drives the propeller 502 to rotate and drives the fuselage 400 to fly smoothly and forward, both the first outlet 222 and the second outlet 224 can be used as air outlets, so that fluid flows from the heat sink 14 to the two ends of the second flow channel 150. And it circulates to the outside through the first outlet 222 and the second outlet 224.

In the radiator 10 of the unmanned aerial vehicle 1000 of the embodiment of the present application, since the cold air flows from the end of the heat sink 14 close to the first side edge 123 into the first flow channel 140, and flows through the plurality of heat sinks 14 to the second flow channel 150 When the electronic component 16 is in contact with the heat sink 10 so that the heat generated by the electronic component 16 is conducted to the heat sink 14, the heat on the heat sink 14 can be carried by the fluid and dissipated from at least one end of the second flow channel 150 To the outside, effective heat dissipation of the electronic components 16 can thus be achieved.

Please refer to FIG. 8, when the UAV 1000 flies sideways toward the side where the first side edge 125 is located, the heat dissipation structure 100 is inclined so that the first outlet 222 changes from an outlet to an inlet, because the first outlet 222 and the second outlet 224 If it is connected, the cold air entering from the first outlet 222 can directly circulate out of the second outlet 224 without offsetting the cold air directed by the fan 18 to the first flow channel 140, thereby ensuring the heat dissipation efficiency of the heat dissipation structure 100. When the UAV 1000 flies sideways toward the side where the second side edge 126 is located, the heat dissipation structure 100 is inclined so that the second outlet 224 changes from the outlet air to the inlet air. Since the first outlet 222 and the second outlet 224 are connected, then The cold air entering from the second outlet 224 can directly circulate out of the first outlet 222, and will not offset the cold air guided by the fan 18 to the first flow channel 140, so that the heat dissipation efficiency of the heat dissipation structure 100 can also be ensured.

Further, external liquid, such as rainwater, enters the circulation space 120 from the inlet 212, enters the first channel 140 from the end of the heat sink 14 close to the first side edge 123, is guided by the heat sink 14 to the second flow channel 150, and then enters the convex The diversion hole 1282 of the ear 128 is led out from the second housing 200 to the outside through the diversion member to prevent rainwater from entering the side where the second surface 122 of the base 12 is located and affecting the normal operation of the electronic component 16. Therefore, the UAV 1000 can also ensure the stability of the work when working in harsh environments such as rainy weather.

Furthermore, if the UAV 1000 is working in windy and rainy weather, while the fan 18 sucks in the ambient wind to dissipate heat, the ambient wind can also help blow rainwater into the guide holes 1282, preventing rainwater from accumulating in the circulation space. Within 120, the weight of the UAV 1000 is increased, which further ensures the normal operation of the UAV 1000.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , The structure, materials, or characteristics are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless specifically defined otherwise.

Claims

A radiator, characterized in that it comprises:

A base, the base including a first surface and a second surface opposite to each other; and

A plurality of heat sinks, the plurality of heat sinks are arranged on the first surface of the base, and the plurality of heat sinks extend in the direction from the first side edge to the second side edge of the base to form a first flow A plurality of the radiating fins are spaced from the second side edge of the base to form a second flow channel, the first side edge is opposite to the second side edge, and the first flow channel is opposite to the second side edge. The second flow channel intersects, the second flow channel includes two ends, and the fluid flows into the first flow channel from the end of the heat sink close to the first side edge, and flows to the first flow channel after passing through a plurality of the heat sink fins. At least one end of the second flow channel.
The heat sink according to claim 1, wherein the base includes a third side edge and a fourth side edge opposite to each other, the first side edge, the third side edge, and the second side edge The edge and the fourth side edge are connected end to end in sequence, and the two ends of the second flow channel are respectively located at the third side edge and the fourth side edge.
The heat sink according to claim 1, wherein the base includes a first long axis, and a plurality of the heat sinks are symmetrically distributed about the first long axis.
The heat sink according to claim 1, wherein the second surface of the base is provided with electronic components, and the projections of the plurality of heat sinks on the second surface cover the electronic components.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, wherein:

The widths of a plurality of said sub-runners are all the same; or

In the direction from the first long axis of the base to the third side edge or the fourth side edge of the base, the widths of the plurality of sub-flow channels decrease in sequence.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, wherein:

A plurality of said sub-flow channels extend in a straight line; or

A plurality of the sub-flow channels extend in a curve.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, wherein:

The extension direction of at least one of the sub-flow channels is parallel to the first long axis of the base.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, and one of the sub-flow channels extends in a straight line, and the sub-flow channel extends in a straight line The angle with the first long axis is not zero.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, and one of the sub-flow channels includes at least a first section close to the first side edge And a second section close to the second side edge, the angle between the first section and the first long axis of the base is smaller than the angle between the second section and the first long axis.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, wherein at least one of the sub-flow channels includes at least a first side near the first side edge. Section and a second section close to the second side edge, the width of the second section is greater than the width of the first section.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, and the opening width of the sub-flow channel located on the first long axis is from close to the first One side of the side edge gradually decreases and increases toward the side close to the second side edge.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, and the sub-flow channel located on the first long axis faces the opening of the second side edge Is a triangle.
The heat sink according to claim 1, wherein a sub-flow channel is formed between two adjacent heat sinks, wherein:

The sub-flow channel located on one side of the first long axis is inclined toward the third side edge of the base compared to the first long axis, and the sub-flow channel located on the other side of the first long axis The flow channel is inclined toward the fourth side edge of the base with respect to the first long axis, so as to form a diversion opening on the side of the plurality of heat sinks close to the second side edge; or

Each of the sub-flow channels includes at least a first section close to the first side edge and a second section close to the second side edge. The second section on the side is inclined toward the third side edge of the base compared to the first long axis, and the second section on the other side of the first long axis is compared to the first long axis. A long axis is inclined toward the fourth side edge of the base to form a diversion opening on the side of the plurality of heat sinks close to the second side edge.
The heat sink according to claim 1, wherein the base is provided with at least one diversion hole penetrating through the first surface and the second surface, and at least one diversion hole corresponds to the first surface. At least one of the two ends of the two runners is provided.
The heat sink according to claim 14, wherein the base comprises at least one lug extending from the second side edge away from the heat sink, at least one lug and at least one air guide The hole corresponds to and is located at at least one of the two ends of the second side edge, and at least one of the diversion holes is provided on the corresponding lug.
The heat sink according to claim 15, wherein the width of the lug gradually becomes smaller in a direction away from the second side edge.
The heat sink according to claim 14, wherein the second surface of the base is provided with a diversion column, and the diversion column surrounds the diversion hole.
The radiator according to claim 1, wherein the periphery of the first surface of the base is provided with a first coupling member, and the first coupling member is used to cooperate with an external second coupling member to enclose A closed circulation space around the periphery.
The radiator according to claim 18, wherein the first coupling member is a channel or a sealing member.
The radiator according to claim 18, wherein the base is provided with at least one diversion hole penetrating through the first surface and the second surface, and the diversion hole is located in the circulation space , The circulation space circulates with the external environment through the diversion hole.
The radiator according to claim 1, wherein a mounting position is reserved between the plurality of heat sinks and the first side edge, and the fluid from the mounting position approaches the heat sink from the heat sink. One end of the first side edge flows into the first flow channel, passes through the plurality of heat sinks, and then flows to both ends of the second flow channel.
22. The radiator according to claim 21, wherein the radiator further comprises a fan installed at the installation position and used for guiding fluid to the plurality of radiating fins.
The radiator according to claim 22, wherein the fan is a centrifugal fan and includes an inlet and an outlet, the inlet being opened on a surface of the fan parallel to the first surface of the base, The fluid is sucked into the fan from the inlet, and blown out from the outlet, and guided to the plurality of radiating fins.
A heat dissipation structure, characterized in that it comprises:

The heat sink of any one of claims 1-17; and

A first housing, the first housing and the base are combined to form a circulation space, and a plurality of the heat sinks are located in the circulation space.
The heat dissipation structure according to claim 24, wherein the first end of the first housing is provided with an inlet, and external fluid enters the circulation space from the inlet.
The heat dissipation structure according to claim 25, wherein the first housing includes a first area and a second area extending obliquely outwards from both sides of the first area, and the inlet is provided at the The first area.
The heat dissipation structure according to claim 26, wherein the second housing includes a second long axis, and the inlet is symmetrical about the second long axis.
The heat dissipation structure according to claim 27, wherein the inlet includes a first sub-inlet and a second sub-inlet, the first sub-inlet and the second sub-inlet are spaced apart in the direction of the second long axis Above, the first sub-inlet is closer to the edge of the first housing than the second sub-inlet.
The heat dissipation structure according to claim 28, wherein the surface of the first housing where the first sub-inlet is opened is at a certain angle with the first surface.
The heat dissipation structure according to claim 28, wherein the first area of the first housing is further provided with a first guide channel, and the first guide channel is in communication with the first sub-inlet. In the direction of the second long axis, the first diversion channel is closer to the edge of the first housing than the first sub-inlet, and the first diversion channel is used for discharging external fluid Lead to the first sub-inlet.
The heat dissipation structure according to claim 28, wherein the second sub-inlet is elongated, and the extension direction of the second sub-inlet is consistent with the direction of the second long axis.
The heat dissipation structure according to claim 28, wherein a first filter screen is provided on the first sub-inlet; and/or

A second filter screen is provided on the second sub-inlet.
The heat dissipation structure according to claim 24, wherein the second end of the first housing is provided with a first outlet and a second outlet, and the first outlet and the second outlet are respectively located in the first Two opposite sides of the two ends; the first outlet and the second outlet correspond to the two ends of the second flow channel.
The heat dissipation structure according to claim 33, wherein the first housing includes a first area and a second area extending obliquely outward from both sides of the first area, the first outlet and the The second outlets are respectively arranged in the second areas on both sides.
The heat dissipation structure according to claim 34, wherein the first housing includes a second long axis, and the first outlet and the second outlet are symmetrical about the second long axis.
The heat dissipation structure according to claim 35, wherein the second area of the first housing is further provided with a second guide channel, the second guide channel communicates with the first outlet, and is vertically In the direction of the second long axis, the second flow guide is closer to the edge of the first housing than the first outlet, and the second flow guide is used to guide the outside fluid The first outlet.
The heat dissipation structure according to claim 35, wherein the second area of the first housing is further provided with a third guide channel, the third guide channel communicates with the second outlet, and is arranged in a vertical direction. In the direction of the second long axis, the third guide channel is closer to the edge of the first housing than the second outlet, and the third guide channel is used to guide the outside fluid The second outlet.
The heat dissipation structure according to claim 33, wherein a third filter screen is provided on the first outlet; and/or

A fourth filter screen is provided on the second outlet.
The heat dissipation structure according to claim 33, wherein the projection of the first outlet on the first surface of the base is closer to the third edge of the base than the plurality of heat sinks And the second edge, the projection of the second outlet on the first surface of the base is closer to the fourth edge and the second edge of the base than the plurality of heat sinks.
The heat dissipation structure according to claim 33, wherein the surface of the first housing on which the first outlet is opened is inclined relative to the first surface of the base; and/or

The surface of the first housing on which the second outlet is opened is inclined relative to the first surface of the base.
The heat dissipation structure according to claim 24, wherein the base, the first housing, and a plurality of the heat sinks form the first flow channel, and the base, the first housing And the interval form the second flow channel.
The heat dissipation structure according to claim 24, wherein the periphery of the base is provided with a first coupling member, and the periphery of the first housing is provided with a second coupling member, and the first coupling member and the second coupling member are provided on the periphery of the base. The two connecting pieces cooperate to enclose the circulation space enclosed by the periphery.
The heat dissipation structure according to claim 40, wherein the first coupling element is a channel, and the second coupling element is a sealing element; or

The first coupling member is a sealing member, and the second coupling member is a channel.
The heat dissipation structure according to claim 40, wherein the base is provided with at least one diversion hole penetrating through the first surface and the second surface, and the diversion hole is located in the circulation space , The circulation space circulates with the external environment through the diversion hole.
The heat dissipation structure according to claim 24, wherein a plurality of radiating fins and the first side edge are reserved between mounting positions, and the fluid from the mounting positions approaches the radiating fins from the mounting positions. One end of the first side edge flows into the first flow channel, passes through the plurality of heat sinks, and then flows to both ends of the second flow channel.
The heat dissipation structure according to claim 45, wherein the heat dissipation structure further comprises a fan installed at the installation position and used for guiding fluid to the plurality of heat sinks.
The heat dissipation structure according to claim 46, wherein the fan is a centrifugal fan and includes an inlet and an outlet, the inlet being opened on a surface of the fan parallel to the first surface of the base, The inlet corresponds to the inlet of the first housing, and fluid is sucked into the fan from the inlet, blown out from the outlet, and guided to the plurality of radiating fins.
An unmanned aerial vehicle, characterized in that it includes:

The heat dissipation structure according to any one of claims 24-47; and

A second housing, the first housing and the second housing are combined to form a receiving space, and the heat sink is located in the receiving space.
The unmanned aerial vehicle according to claim 48, wherein the unmanned aerial vehicle further comprises a deflector, and the deflector communicates with the base and the outside.
The unmanned aerial vehicle according to claim 49, wherein the guide member penetrates through the second housing, so as to lead the liquid entering the base from the outside to the outside from the second housing.