Unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle relates to pressure reduction device field, including radiator, step-down transformer and unmanned aerial vehicle body, the interior of unmanned aerial vehicle body is provided with equipment cabin, the inner wall of equipment cabin is equipped with step-down transformer, the outer wall of step-down transformer is sleeved with radiator, the outer wall of radiator is fixed with the mounting block, the mounting block is fixed with the equipment cabin. A plurality of sets of heat dissipation blocks are installed at the top of the heat dissipation device, air guide grooves are formed in the heat dissipation blocks, and flow guide columns are installed at the top of the heat dissipation device. Heat generated in the operation process of the step-down transformer is conducted to the radiator through the heat-conducting glue covering the surface of the step-down transformer, when external wind blows from one side of the radiator, the heat dissipation block exchanges heat with the external wind, and the heat dissipation block can change the movement direction of part of the external wind, so that the heat dissipation efficiency is improved. The air with the moving direction changed can be blown into the air guide groove from the ventilation holes in the outer wall of the heat dissipation block, and therefore the contact area between the outside air and the heat dissipation block is increased.

Description

Technical Field

[0001] This utility model relates to the field of pressure reduction devices, specifically a type of unmanned aerial vehicle (UAV). Background Technology

[0002] A drone step-down device refers to a step-down module in the drone power supply. A step-down module is an external power regulator that is separate from the brushless ESC. It is mainly used to precisely adjust the voltage output by the drone power supply and convert the higher input voltage into a specific voltage value suitable for the stable operation of the various electronic components of the drone.

[0003] The principle of the drone voltage reduction device is to use a specific circuit topology that controls the on and off time ratio of the switching elements, thereby achieving effective voltage reduction of the input voltage. When the switching element is on, electrical energy is stored in energy storage elements such as inductors. When the switching element is off, the energy storage elements release the stored electrical energy to the load. This process is repeated to operate at a stable frequency and output a stable voltage that meets the normal operation requirements of the drone's various modules. This ensures that the drone's flight control system, communication module, motor drive, and other components can operate efficiently under a suitable voltage environment.

[0004] When the step-down device of a drone reduces the voltage in the circuit, it generates a lot of heat. The existing heat dissipation method for step-down devices mainly involves heat exchange between the heat-conducting plate on the surface of the step-down device and the air. However, due to the small internal space of the drone, the surface area of ​​the heat-conducting plate is limited, which affects the heat dissipation effect of the drone's step-down device. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a drone that solves the technical problem of poor heat dissipation effect of existing drone voltage reduction devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A drone includes a radiator, a step-down converter, and a drone body. The drone body has an equipment compartment inside. A step-down converter is installed on the inner wall of the equipment compartment. A radiator is fitted onto the outer wall of the step-down converter. An installation block is fixed to the outer wall of the radiator. Multiple sets of heat dissipation blocks are installed on the top of the radiator. An air guide channel is provided inside the heat dissipation block. Multiple sets of ventilation holes are opened on the inner wall of the air guide channel. A guide column is installed on the top of the radiator.

[0007] By adopting the above technical solution, the technical problem of poor heat dissipation effect of existing UAV step-down devices is solved. The heat generated during the operation of the step-down device is conducted to the heat sink through the thermally conductive adhesive covering the surface of the step-down device. When the outside wind blows from one side of the heat sink, the heat sink exchanges heat with the outside wind. Since the heat sink is not arranged side by side, it can change the direction of some of the outside wind. The wind that changes the direction of movement can be blown into the air guide channel through the ventilation holes on the outer wall of the heat sink, thereby increasing the contact area between the outside wind and the heat sink.

[0008] The present invention is further configured such that the interior of the mounting groove is filled with thermally conductive adhesive, and the thermally conductive adhesive is a chip heat dissipation grease material.

[0009] By adopting the above technical solution, thermally conductive adhesive is used to fill the gap between the heat sink and the step-down converter, making the heat sink more efficient at absorbing heat from the surface of the step-down converter.

[0010] The present invention is further configured such that the outer wall of the bottom end of the step-down transformer is provided with multiple sets of pins, and the pins are configured as triangles.

[0011] By adopting the above technical solution, the pins at the bottom of the step-down transformer make it easier for personnel to install and remove the step-down transformer from the circuit board, and the pins at the bottom of the step-down transformer are set in a triangle shape, which can increase the strength of the pin structure.

[0012] The present invention is further configured such that a fixing plate is installed at the bottom of the step-down transformer, and the fixing plate reinforces and fixes multiple sets of pins.

[0013] By adopting the above technical solution, a fixing plate is installed at the bottom of the step-down transformer, and the fixing plate strengthens the fixation of multiple sets of pins.

[0014] The present invention is further configured such that the multiple sets of heat dissipation blocks are installed and fixed around the flow guide column, and the heat dissipation blocks are kept at a distance from each other.

[0015] By adopting the above technical solution, multiple heat sinks present a fan-shaped skeleton shape, which enables the heat sinks to guide the external wind flow to the position of the guide column.

[0016] The present invention is further configured such that the air guide groove is V-shaped and the width of the air guide groove gradually increases.

[0017] By adopting the above technical solution, the greater the thickness of the heat sink, the stronger its heat absorption capacity. Therefore, the heat conduction capacity of the bottom area of ​​the air guide channel is stronger than that of the top area of ​​the air guide channel. Furthermore, setting the air guide channel in a V-shape can increase the contact area between the outside air and the air guide channel.

[0018] The present invention is further configured such that the ventilation hole is inclined, and the bottom of the ventilation hole guides the air channel is inclined.

[0019] By adopting the above technical solution, the ventilation holes are set at an angle, and the bottom of the ventilation holes guide the air ducts at an angle.

[0020] The present invention is further configured such that the outer wall of the guide column is arc-shaped, and the guide column is spindle-shaped.

[0021] By adopting the above technical solution, the outer wall of the guide column is set in an arc shape, and the guide column presents a spindle shape.

[0022] The present invention is further configured such that the top of the guide column is tapered, and the diameter of the end of the guide column gradually increases from top to bottom.

[0023] By adopting the above technical solution, when the outside wind flows downward from the top of the guide column, the guide column will guide the outside wind to the surrounding area.

[0024] The present invention is further configured such that the mounting block has a screw hole inside, and the mounting block is fixedly installed inside the drone by bolts.

[0025] By adopting the above technical solution, the radiator is fixedly installed above the step-down transformer using bolts inside the mounting block, which reduces the possibility of the radiator becoming loose.

[0026] The present invention is further configured such that the outer wall of the drone body is equipped with wings, the bottom of the drone body is fixed with a tripod, and the outer wall of the drone body is provided with a ventilation slot, which is connected to the equipment compartment.

[0027] By adopting the above technical solution, during the flight of the drone, outside air can enter the equipment compartment through the ventilation slots at both ends of the drone body.

[0028] In summary, the present invention has the following main advantages:

[0029] This invention solves the technical problem of poor heat dissipation in existing drone step-down devices by setting up a radiator, heat dissipation block, air guide column and thermal conductive adhesive. The heat generated during the operation of the step-down device is conducted to the radiator through the thermal conductive adhesive covering the surface of the step-down device. When the outside wind blows from one side of the radiator, the heat dissipation block exchanges heat with the outside wind. Since the heat dissipation blocks are not arranged side by side, they can change the direction of some of the outside wind. The wind that changes the direction of movement can be blown into the air guide groove through the ventilation holes on the outer wall of the heat dissipation block, thereby increasing the contact area between the outside wind and the heat dissipation block.

[0030] This invention utilizes a heat sink and heat dissipation strips. When external wind blows towards the heat sink in a fixed direction, the wind flows through the drainage grooves inside the heat dissipation strips to the other end of the heat sink. The arc-shaped drainage grooves increase the contact time between the external wind and the heat dissipation strips, thereby effectively utilizing the cooling effect of the external wind. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall device of this utility model;

[0032] Figure 2 This is a layout diagram of the heat sink position of this utility model;

[0033] Figure 3 This is a diagram showing the internal structure of the radiator of this utility model;

[0034] Figure 4 This is a cross-sectional view of the heat sink of this utility model;

[0035] Figure 5 This is a schematic diagram of the overall heat dissipation strip of this utility model;

[0036] Figure 6 This is a structural diagram of the outer wall of the heat dissipation strip of this utility model.

[0037] In the diagram: 1. Heat sink; 101. Mounting slot; 2. Heat sink block; 201. Air guide slot; 202. Ventilation hole; 3. Air guide column; 4. Mounting block; 401. Screw hole; 5. Voltage step-down unit; 501. Fixing plate; 502. Pin; 6. Thermal adhesive; 7. Heat sink plate; 701. Groove; 8. Heat sink strip; 801. Air guide slot; 802. Air guide slot; 803. First heat sink; 804. Second heat sink; 805. Third heat sink; 9. UAV body; 901. Wing; 902. Landing frame; 903. Equipment compartment; 904. Ventilation slot. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The embodiments of this utility model will be described below based on its overall structure.

[0040] Example 1

[0041] A type of drone, such as Figure 1 - Figure 4As shown, the device includes a radiator 1, a step-down converter 5, and a drone body 9. The drone body 1 has an equipment compartment 903 inside. The step-down converter 5 is installed on the inner wall of the equipment compartment 903. The radiator 1 is fitted onto the outer wall of the step-down converter 5. A mounting groove 101 is provided on one side of the radiator 1. A mounting block 4 is fixed to the outer wall of the radiator 1. Multiple sets of heat dissipation blocks 2 are installed on the top of the radiator 1. Air guide channels 201 are provided inside the heat dissipation blocks 201. Multiple sets of ventilation holes 202 are opened on the inner wall of the air guide channels 201. A guide column 3 is installed on the top of the radiator 1. This design solves the problems of existing drones... The technical problem of poor heat dissipation of the step-down device is that the heat generated during the operation of the step-down device 5 is conducted to the radiator 1 through the thermally conductive adhesive 6 covering the surface of the step-down device 5. When the outside wind blows from one side of the radiator 1, the heat sink 2 exchanges heat with the outside wind. Since the heat sink 2 is not arranged side by side, it can change the direction of some of the outside wind. The wind that changes the direction of movement can be blown into the air guide groove 201 through the ventilation hole 202 on the outer wall of the heat sink 2, thereby increasing the contact area between the outside wind and the heat sink 2.

[0042] Please see Figure 3 The interior of the mounting slot 101 is filled with thermally conductive adhesive 6, which is a chip heat dissipation grease material. The thermally conductive adhesive 6 is used to fill the gap between the heat sink 1 and the step-down converter 5, so that the heat sink 1 can absorb heat from the surface of the step-down converter 5 more efficiently.

[0043] Please see Figure 3 The outer wall at the bottom of the step-down transformer 5 is provided with multiple sets of pins 502, and the pins 502 are set in a triangle. The pins 502 at the bottom of the step-down transformer 5 make it easy for personnel to install and remove the step-down transformer 5 from the circuit structure board. The triangular setting of the pins 502 at the bottom of the step-down transformer 5 can increase the structural strength of the pins 502.

[0044] Please see Figure 3 The bottom of the step-down transformer 5 is equipped with a fixing plate 501. The fixing plate 501 strengthens and fixes multiple sets of pins 502. The fixing plate 501 connects and reinforces the multiple sets of pins 502, and the insulating fixing plate 501 can prevent the current between the multiple sets of pins 502 from interfering.

[0045] Please see Figure 1 Multiple heat sinks 2 are installed and fixed around the airflow guide column 3, and the heat sinks 2 are kept at a distance from each other. The multiple heat sinks 2 present a fan-shaped skeleton shape, so that the heat sinks 2 can guide the external wind to the position of the airflow guide column 3.

[0046] Please see Figure 4The air guide 201 is set in a V shape, and the width of the air guide 201 gradually increases. The greater the thickness of the heat sink 2, the stronger its heat absorption capacity. Therefore, the heat conduction capacity of the bottom area of ​​the air guide 201 is stronger than that of the top area of ​​the air guide 201. Furthermore, setting the air guide 201 in a V shape can increase the contact area between the outside wind and the air guide 201.

[0047] Please see Figure 4 The ventilation hole 202 is inclined and the bottom of the air guide groove 201 is inclined. The outside air flows from the ventilation hole 202 on the outer wall of the heat sink 2 to the bottom of the inner wall of the air guide groove 201, and then the outside air flows upward from the bottom of the air guide groove 201.

[0048] Please see Figure 3 The outer wall of the guide column 3 is arc-shaped and the guide column 3 is spindle-shaped. When the outside wind blows to the guide column 3, the guide column 3 disperses most of the outside wind to both sides of the guide column 3, so that the outside wind can flow through more heat sinks 3, thereby increasing the total contact area between the outside wind and the heat sinks 3 on the top of the radiator 1.

[0049] Please see Figure 3 The top of the guide column 3 is set to be conical, and the diameter of the end of the guide column 3 gradually increases from top to bottom. When the outside wind flows downward from the top of the guide column 3, the guide column 3 guides the outside wind to the surrounding area of ​​the guide column 3.

[0050] Please see Figure 1 The mounting block 4 has screw holes 401 inside, and is fixedly installed inside the drone by bolts. The heat sink 1 is fixedly installed above the step-down transformer 5 by bolts inside the mounting block 4, which reduces the possibility of the heat sink 1 becoming loose. Please refer to... Figure 2 The outer wall of the drone body 9 is equipped with wings 901, the bottom of the drone body 9 is fixed with a landing gear 902, the outer wall of the drone body 9 is provided with ventilation slots 904, and the ventilation slots 904 are connected to the equipment compartment 903. During the flight of the drone body 9, outside air can enter the equipment compartment 903 through the ventilation slots 904 at both ends of the drone body 9.

[0051] Example 2

[0052] A type of drone, such as Figure 5 and Figure 6As shown, the technical solution and components of this embodiment are basically the same as those of Embodiment 1. The technically similar parts will not be repeated here. The difference is that if the step-down transformer 5 is rectangular, the heat sink 7 is installed and fixed on the rectangular step-down transformer 5. The heat sink 7 absorbs and dissipates heat from the surface of the step-down transformer 5. The groove 701 on the outer wall of the heat sink 7 can increase the contact area between the heat sink 7 and the air. When the outside wind blows towards the heat sink 7 in a fixed direction, the outside wind flows from the guide groove 801 inside the heat sink 8 to the other end of the heat sink 7. The guide groove 801 is arc-shaped, which increases the contact time between the outside wind and the heat sink 8, thereby effectively utilizing the cooling effect of the outside wind. In addition, a part of the outside wind will flow to the other side of the heat sink 7 through the gap between the two sets of heat sink 8. During the process of the outside wind flowing through the gap between the two sets of heat sink 8... Because the gap between the two sets of heat dissipation strips 8 is small, outside air flows into the first heat dissipation groove 803. The third heat dissipation groove 805 connected to the end of the first heat dissipation groove 803 is set in a cone shape. The cone-shaped third heat dissipation groove 805 guides the outside air to the air guide groove 802 on one side of the heat dissipation strip 8. The inner wall of the air guide groove 802 is set in an arc shape. The air guide groove 802 then guides the outside air to the first heat dissipation groove 803 at the other end of the heat dissipation strip 8. In addition, the outside air in the first heat dissipation groove 803 can also flow through the second heat dissipation groove 804 to the first heat dissipation groove 803 at the other end of the heat dissipation strip 8. The air guide groove 801, air guide groove 802, first heat dissipation groove 803, second heat dissipation groove 804 and third heat dissipation groove 805 set on the heat dissipation strip 8 increase the contact time and contact area between the outside air and the heat dissipation strip 8, thereby increasing the heat dissipation effect of the heat dissipation strip 8.

[0053] The working principle of this utility model is as follows: During the flight of the UAV body 9, outside air enters the equipment compartment 903 inside the UAV body 9 through the ventilation slot 904. The heat generated during the operation of the step-down converter 5 is conducted to the heat sink 1 through the thermally conductive adhesive 6 covering the surface of the step-down converter 5. The top of the heat sink 1 is provided with heat dissipation blocks 2 and guide columns 3. The heat absorbed by the heat sink 1 is mainly dissipated through heat exchange between the multiple sets of heat dissipation blocks 2 and the air. When outside wind blows from one side of the heat sink 1, because the multiple sets of heat dissipation blocks 2 are installed around the guide columns 3, the outside wind flows through the heat dissipation blocks 2 and gathers in the direction of the guide columns 3. During the process, the heat absorbed by the radiator 1 from the surface of the step-down transformer 5 is conducted to the heat sink 2. The heat sink 2 exchanges heat with the outside air. Since the heat sink 2 is not arranged side by side, it can change the direction of some of the outside air. The changed direction of the air can be blown into the air guide groove 201 through the ventilation hole 202 on the outer wall of the heat sink 2, thereby increasing the contact area between the outside air and the heat sink 2. When the outside air blows to the guide column 3, the guide column 3 disperses most of the outside air to both sides of the guide column 3, so that the outside air can flow through more heat sinks 3, thereby increasing the total contact area between the outside air and the heat sink 3 on the top of the radiator 1.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A drone comprising a heat sink (1), a voltage reducer (5) and a drone body (9), characterized in that: The inside of the unmanned aerial vehicle body (9) is provided with a device bin (903), the inner wall of the device bin (903) is provided with a voltage reducer (5), the outer wall of the voltage reducer (5) is sleeved with a radiator (1), one side of the radiator (1) is provided with a mounting groove (101), the outer wall of the radiator (1) is fixedly provided with a mounting block (4), a plurality of groups of heat dissipation blocks (2) are mounted on the top of the radiator (1), the inside of the heat dissipation block (2) is provided with a wind guide groove (201), a plurality of groups of ventilation holes (202) are formed in the inner wall of the wind guide groove (201), and a flow guide column (3) is mounted on the top of the radiator (1).

2. The unmanned aerial vehicle of claim 1, wherein: The mounting groove (101) is filled with a heat-conducting glue (6), and the heat-conducting glue (6) is made of a chip heat dissipation silicone grease material.

3. The unmanned aerial vehicle of claim 1, wherein: The outer wall of the bottom end of the voltage reducer (5) is provided with a plurality of groups of pins (502), and the pins (502) are triangular.

4. The unmanned aerial vehicle of claim 1, wherein: The bottom of the voltage reducer (5) is provided with a fixed plate (501), and the fixed plate (501) is used for fixing the plurality of groups of pins (502).

5. The unmanned aerial vehicle of claim 1, wherein: The plurality of groups of heat dissipation blocks (2) are fixed around the flow guide column (3), and a distance is kept between the heat dissipation blocks (2).

6. The unmanned aerial vehicle of claim 1, wherein: The wind guide groove (201) is V-shaped, and the width of the wind guide groove (201) gradually increases.

7. The unmanned aerial vehicle of claim 1, wherein: The ventilation hole (202) is inclined, and the ventilation hole (202) is inclined to the bottom of the wind guide groove (201).

8. The unmanned aerial vehicle of claim 1, wherein: The outer wall of the flow guide column (3) is provided with an arc shape, and the flow guide column (3) is a spindle.

9. The unmanned aerial vehicle of claim 1, wherein: The top of the flow guide column (3) is conical, and the diameter of the flow guide column (3) gradually increases from top to bottom.

10. The unmanned aerial vehicle of claim 1, wherein: The inside of the mounting block (4) is provided with a threaded hole (401), and the mounting block (4) is fixedly installed in the unmanned aerial vehicle through bolts.

11. The unmanned aerial vehicle of claim 1, wherein: The outer wall of the unmanned aerial vehicle body (9) is provided with a wing (901), the bottom of the unmanned aerial vehicle body (9) is fixedly provided with a foot stool (902), the outer wall of the unmanned aerial vehicle body (9) is provided with a ventilation groove (904), and the ventilation groove (904) is communicated with the device bin (903).

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