Efficient heat dissipation power supply structure suitable for unmanned aerial vehicle

Abstract

The utility model discloses an efficient heat dissipation power supply structure suitable for an unmanned aerial vehicle, which relates to the technical field of unmanned aerial vehicles and comprises an unmanned aerial vehicle body, an inner cavity of the unmanned aerial vehicle body is used for installing a power supply module, and a chassis heat dissipation frame is connected to the bottom of the unmanned aerial vehicle body and comprises a supporting net rack and a graphite foam block. The supporting net rack is connected with a bottom opening of an inner cavity of the unmanned aerial vehicle body and downwards protrudes out of the bottom face of the unmanned aerial vehicle body, and a mounting groove is formed in the top of the supporting net rack; the graphite foam block is clamped in the mounting groove, the top surface of the graphite foam block is provided with a power supply placement groove for mounting the power supply module, and the outer wall surface of the power supply module is tightly attached to the inner wall surface of the power supply placement groove. The supporting net rack provides a stable installation foundation for the graphite foam block, air circulation is enhanced, and therefore heat dissipation efficiency is improved, vibration can be effectively absorbed and dispersed through the structural design of the supporting net rack, the damping effect is improved, the overall weight is reduced, and the lightweight design of the unmanned aerial vehicle is achieved.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically to a high-efficiency heat dissipation power supply structure suitable for UAVs. Background Technology

[0002] With the rapid development of drone technology, its application scenarios are constantly expanding, from consumer-grade aerial photography to industrial-grade logistics, surveying, and inspection. As one of its core components, the drone power system plays a crucial role in providing power to the entire flight system. However, during flight, especially when operating at high power output, during prolonged hovering, or in high-temperature environments, the power modules (such as batteries and ESCs) generate a significant amount of heat. If this heat cannot be dissipated in time, it can lead to excessively high power supply temperatures, affecting performance, shortening lifespan, and even posing safety hazards. Therefore, developing an efficient and lightweight power supply heat dissipation structure is essential for improving the performance and reliability of drones.

[0003] Currently, drone power supply cooling mainly employs the following methods:

[0004] (a) Natural convection cooling: By designing heat dissipation holes and fins on the drone's outer shell, heat is carried away by natural airflow. This cooling method is simple in structure and lightweight, but its cooling efficiency is low, making it difficult to meet the cooling requirements of high-power, long-term operation.

[0005] (ii) Forced convection cooling: Installing miniature fans inside the drone enhances airflow to remove heat. While this improves cooling efficiency, the operation of the fans increases the drone's energy consumption and noise. Additionally, the fans themselves add weight and size, impacting the drone's aerodynamic performance.

[0006] (III) Heat pipe cooling: Heat is transferred to the heat sink through the high thermal conductivity of heat pipes, and then dissipated through airflow. Heat pipe cooling is effective, but the arrangement of heat pipes and the design of the heat sink require a certain amount of space, and there may be thermal resistance at the connection between the heat pipe and the heat sink, which affects the cooling efficiency.

[0007] (iv) Liquid cooling: Heat is removed by circulating coolant and dissipated into the environment through a radiator. Liquid cooling systems have high heat dissipation efficiency, but the coolant circulation system increases the complexity and weight of the UAV, and there is also a risk of coolant leakage.

[0008] (v) Material heat dissipation: Heat dissipation components are made of materials with high thermal conductivity (such as aluminum alloys, copper alloys, etc.). Although these metal materials have good thermal conductivity, their high density will increase the weight of the drone and is not conducive to the lightweight design of the drone.

[0009] In summary, the existing unmanned aerial vehicle power supply heat dissipation technology has different degrees of limitations in heat dissipation efficiency, weight, structural complexity, etc., and it is difficult to meet the requirements of the unmanned aerial vehicle for heat dissipation performance and light weight at the same time. Utility model content

[0010] Therefore, the utility model provides a kind of high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicle, to solve the above technical problems.

[0011] As a new type of lightweight high-thermal-conductivity material, graphite foam has extremely high thermal conductivity (up to 2000 W / (m·K)) and low density (about 0.2 g / cm 3 Its porous structure not only increases the heat dissipation area, but also improves the heat conduction efficiency by optimizing the porosity and pore size distribution. However, the mechanical strength of graphite foam is relatively low, and it is difficult to be directly used as a structural component of unmanned aerial vehicle.

[0012] The grid structure has good mechanical strength and high heat dissipation area, and its open structure design is conducive to air circulation and enhances the heat dissipation effect. By reasonably designing the grid size and layout of the grid structure, the heat dissipation path can be further optimized to ensure that heat can be quickly dissipated to the external environment.

[0013] Therefore, by combining graphite foam with grid structure, the high thermal conductivity and lightweight characteristics of graphite foam, as well as the mechanical strength and heat dissipation advantages of grid structure, a new type of unmanned aerial vehicle power supply heat dissipation structure is designed, which is expected to significantly improve the heat dissipation performance of unmanned aerial vehicle power supply without increasing weight, meet the heat dissipation requirements of unmanned aerial vehicle under high power and long time working conditions, and maintain the lightweight and structural stability of unmanned aerial vehicle.

[0014] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0015] A high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicle, comprising an unmanned aerial vehicle body, an inner cavity of the unmanned aerial vehicle body for mounting a power supply module, a bottom of the unmanned aerial vehicle body connected with a bottom plate heat dissipation frame, the bottom plate heat dissipation frame comprising:

[0016] A support grid connected with the bottom opening of the inner cavity of the unmanned aerial vehicle body and protruding downward from the bottom surface of the unmanned aerial vehicle body, the top of the support grid having a mounting slot;

[0017] A graphite foam block clamped in the mounting slot, and the top surface of the graphite foam block having a power supply mounting slot for mounting the power supply module, the outer wall surface of the power supply module closely fitted with the inner wall surface of the power supply mounting slot.

[0018] Through the technical scheme, the support net rack not only provides a stable installation foundation for the graphite foam block, but also enhances air circulation through the porous structure and open grid design, thereby improving heat dissipation efficiency. Meanwhile, the structural design of the support net rack can effectively absorb and disperse vibration, thereby improving damping effect. In addition, the support net rack is made of lightweight material, thereby reducing overall weight and realizing lightweight design of the unmanned aerial vehicle. The combination of the graphite foam block and the support net rack further plays the advantages of high thermal conductivity and lightweight, thereby meeting the requirements of the unmanned aerial vehicle on heat dissipation performance and lightweight.

[0019] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the bottom heat dissipation frame further comprises a pressing net rack, the pressing net rack is buckled on the upper part of the installation groove, and the pressing net rack is connected with the support net rack through first bolts, and the pressing net rack presses the top surface of the power module.

[0020] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the side wall of the support net rack is connected with the bottom opening of the inner cavity of the unmanned aerial vehicle body through second bolts, and the part of the support net rack protruding from the bottom surface of the unmanned aerial vehicle body is in a circular truncated cone structure which is wide at the top and narrow at the bottom, and the diameter of the support net rack gradually decreases downward, so that the structure of the bottom of the support net rack is more concentrated, the structural strength is increased, and the anti-vibration effect is improved.

[0021] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the side wall of the graphite foam block is fastened and connected with the installation groove through third bolts.

[0022] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, a plurality of through horizontal ventilation and heat dissipation channels are arranged in the horizontal direction of the bottom of the graphite foam block, and a plurality of vertical ventilation and heat dissipation channels which are in communication with the horizontal ventilation and heat dissipation channels are arranged on the inner bottom surface of the power module installation groove of the graphite foam block.

[0023] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the openings of the horizontal ventilation and heat dissipation channels and the vertical ventilation and heat dissipation channels are formed in a horn structure.

[0024] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the horizontal plane where the horizontal ventilation and heat dissipation channels are located exceeds the bottom opening of the unmanned aerial vehicle body downward, so that the horizontal ventilation and heat dissipation channels are exposed downward when the unmanned aerial vehicle travels, and air ventilation and heat dissipation can be better achieved.

[0025] Preferably, in the above-mentioned high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the support net rack is composed of a plurality of annular ring frames which are connected through net rack connecting rods.

[0026] Preferably, in the high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the power supply mounting groove is set as a circular groove or a rectangular groove according to the shape requirement of the power supply module.

[0027] Preferably, in the high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, the support net rack is made of PP or PVC material.

[0028] Through the above technical solution, compared with the prior art, the utility model discloses a high-efficiency heat dissipation power supply structure suitable for unmanned aerial vehicles, which has the following beneficial effects:

[0029] 1. High-efficiency heat dissipation performance: by combining the graphite foam block with the support net rack, the high thermal conductivity of the graphite foam and the open structure of the support net rack are utilized, the heat dissipation path is optimized, and the heat dissipation efficiency is significantly improved. The horizontal and vertical ventilation and heat dissipation channels designed inside the graphite foam block further enhance air circulation, carry away heat, and ensure that the power supply module maintains stable temperature during high-power output and long-time operation.

[0030] 2. Lightweight design: the support net rack is made of lightweight materials such as PP or PVC, and combined with the low-density characteristics of the graphite foam, the weight of the power supply structure of the unmanned aerial vehicle is greatly reduced, meeting the requirements of the unmanned aerial vehicle for lightweight, and helping to improve the flight performance and endurance of the unmanned aerial vehicle.

[0031] 3. Good shock absorption performance: the structural design of the support net rack not only provides mechanical strength, but also absorbs and disperses vibrations through its porous and mesh structure, enhancing the shock absorption effect of the entire power supply structure. This design effectively reduces the impact of vibrations on the power supply module during flight, improving the stability and service life of the power supply module.

[0032] 4. Structural stability and reliability: through bolt connection and other methods, the firm connection between the graphite foam block, the pressure net rack and the support net rack is ensured, and the stability of the entire heat dissipation structure is enhanced. This design not only improves the heat dissipation performance, but also ensures the reliability in complex flight environments.

[0033] 5. Universality and adaptability: the power supply mounting groove can be set to different shapes according to the shape requirement of the power supply module, improving the universality and adaptability of the heat dissipation structure, and meeting the installation requirements of different types and specifications of power supply modules.

[0034] 6. Optimized aerodynamic design: the horizontal ventilation and heat dissipation channel is exposed downward, which can better utilize air flow to carry away heat, and the channel opening of the horn structure further optimizes the air flow path, reduces air resistance, and improves heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0036] Figure 1 The drawing is an external structure schematic diagram of the high-efficiency heat dissipation power supply structure suitable for the unmanned aerial vehicle provided by the present application.

[0037] Figure 2 The drawing is an exploded structure schematic diagram of the high-efficiency heat dissipation power supply structure suitable for the unmanned aerial vehicle provided by the present application.

[0038] Figure 3 The drawing is a structure schematic diagram of the chassis heat dissipation frame provided by the present application.

[0039] Figure 4 The drawing is an exploded structure schematic diagram of the support net rack provided by the present application.

[0040] Figure 5 The drawing is a structure schematic diagram of the graphite foam block provided by the present application.

[0041] Among them:

[0042] 1-unmanned aerial vehicle body;

[0043] 11-inner cavity;

[0044] 2-chassis heat dissipation frame;

[0045] 21-support net rack; 211-mounting groove; 212-annular ring frame; 213-net rack connecting rod; 22-graphite foam block; 221-power supply placing groove; 222-horizontal ventilation and heat dissipation channel; 223-vertical ventilation and heat dissipation channel; 23-pressing net rack; 24-first bolt; 25-second bolt; 26-third bolt. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0047] Referring to the drawings Figure 1 to the drawings Figure 4The utility model discloses an efficient heat dissipation power supply structure suitable for unmanned plane, including unmanned plane body 1, the inner chamber 11 of unmanned plane body 1 is used for installing power module, the bottom of unmanned plane body 1 is connected with chassis heat dissipation frame 2, chassis heat dissipation frame 2 includes:

[0048] Support net rack 21, support net rack 21 with the bottom opening of unmanned plane body 1 inner chamber 11 is connected, and the bottom surface of unmanned plane body 1 is protruded downward, and the top of support net rack 21 has installation groove 211;

[0049] Graphite foam block 22, graphite foam block 22 is connected in installation groove 211, and the top surface of graphite foam block 22 has power supply installation groove 221 for installing power module, and the outer wall surface of power module is closely combined with the inner wall surface of power supply installation groove 221.

[0050] In order to further optimize the above technical scheme, chassis heat dissipation frame 2 further includes pressure setting net rack 23, pressure setting net rack 23 is buckled in the upper portion of installation groove 211, and is connected with support net rack 21 through first bolt 24, and pressure setting net rack 23 is pressed tightly the top surface of power module. The setting of pressure setting net rack 23 further presses the power module, ensures that it is closely combined with graphite foam block 22, thereby improving the heat dissipation efficiency. Meanwhile, pressure setting net rack 23 and support net rack 21 are connected through bolt, the stability of the whole heat dissipation structure is enhanced, the damping effect is further improved, and the power module is prevented from loosening due to vibration in the flight process.

[0051] In order to further optimize the above technical scheme, the side wall of graphite foam block 22 and installation groove 211 are fastened by third bolt 26. The graphite foam block 22 and the installation groove 221 are fastened by the bolt, which ensures the stability and firmness of the graphite foam block 22 in the support net rack 21, and avoids loosening due to vibration or impact. At the same time, the grid structure of the support net rack 21 can absorb and disperse vibration, improve the damping effect, and further enhance the reliability of the heat dissipation structure.

[0052] In order to further optimize the above technical scheme, pressure setting net rack 23 is made of PP or PVC material.

[0053] In order to further optimize the above technical scheme, the side wall of support net rack 21 is connected with the bottom opening of unmanned plane body 1 inner chamber 11 through second bolt 25, and the part of support net rack 21 protruding from the bottom surface of unmanned plane body 1 is a circular truncated cone structure with wide top and narrow bottom. The support net rack 21 is connected with the unmanned plane body 1 by bolt connection, which is convenient for installation and disassembly, and the circular truncated cone structure with wide top and narrow bottom not only increases the structural strength, but also optimizes the air flow path, further improves the heat dissipation effect. In addition, this structure design can better disperse vibration, improve damping performance, reduce the overall weight, and meet the requirements of unmanned plane lightweight design.

[0054] Referring to the drawings Figure 5 The bottom of the graphite foam block 22 is horizontally provided with a plurality of through transverse ventilation and heat dissipation channels 222, and the inner bottom surface of the power supply mounting groove 221 of the graphite foam block 22 is provided with a plurality of vertical ventilation and heat dissipation channels 223 in communication with the transverse ventilation and heat dissipation channels 222. The transverse and vertical ventilation and heat dissipation channels arranged in the graphite foam block 22 form a good air flow path, significantly improving the heat dissipation efficiency. At the same time, the design of these channels also helps to disperse vibration, further improving the damping effect.

[0055] In order to further optimize the above technical solution, the opening of the transverse ventilation and heat dissipation channel 222 and the vertical ventilation and heat dissipation channel 223 is formed into a horn structure. The opening of the ventilation and heat dissipation channel is formed into a horn structure, which not only increases the air flow speed and improves the heat dissipation efficiency, but also further reduces the vibration transmission and enhances the damping effect by optimizing the air flow path.

[0056] In order to further optimize the above technical solution, the horizontal plane where the transverse ventilation and heat dissipation channel 222 is located exceeds the bottom opening of the unmanned aerial vehicle body 1 downward. The horizontal plane where the transverse ventilation and heat dissipation channel 222 is located exceeds the bottom opening of the unmanned aerial vehicle body 1 downward, so that the unmanned aerial vehicle can better utilize the air flow to carry away heat during flight, further improving the heat dissipation effect. At the same time, this design also helps to reduce the influence of external vibration on the power supply module and improves the damping performance.

[0057] In order to further optimize the above technical solution, the support net rack 21 is supported by the annular ring frame 212 as the main body, and a plurality of annular ring frames 212 are connected by the net rack connecting rod 213 to form a whole. This structure design not only optimizes the heat dissipation path, but also enhances the mechanical strength and damping performance of the structure. The multi-layer structure of the annular ring frame 212 can effectively disperse vibration, while reducing the overall weight, meeting the requirements of lightweight design of the unmanned aerial vehicle.

[0058] In order to further optimize the above technical solution, the power supply mounting groove 221 is set as a circular groove or a rectangular groove according to the shape requirement of the power supply module. It can better adapt to power supply modules of different shapes, improve the universality and applicability of the heat dissipation structure. At the same time, this design ensures the close fit of the power supply module and the graphite foam block, improves the heat dissipation efficiency, and also reduces the influence of vibration on the power supply module, enhances the damping effect.

[0059] To further optimize the above technical solutions, the support net frame 21 is made of PP or PVC material. The support net frame 21 is made of PP or PVC material, which not only has good mechanical properties and corrosion resistance, but also can effectively reduce the overall weight and realize lightweight design. At the same time, the elastic properties of these materials help to absorb and disperse vibrations, further improve the damping effect, and meet the requirements of unmanned aerial vehicles for heat dissipation performance and lightweight.

[0060] The unmanned aerial vehicle efficient heat dissipation power supply structure has significant advantages in heat dissipation performance, lightweight, damping effect, structural stability and universality, and can effectively improve the performance and reliability of the unmanned aerial vehicle, and meet the heat dissipation requirements of the unmanned aerial vehicle under high power and long time working conditions.

[0061] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0062] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An efficient heat dissipation power supply structure suitable for a drone, comprising a drone body (1), an inner cavity (11) of the drone body (1) is used for mounting a power supply module, a bottom of the drone body (1) is connected with a chassis heat dissipation frame (2), characterized in that, The chassis heat dissipation frame (2) comprises: A support net frame (21) is connected with the bottom opening of the inner cavity (11) of the UAV body (1) and protrudes downward from the bottom surface of the UAV body (1), and the top of the support net frame (21) has a mounting groove (211); A graphite foam block (22) is clamped in the mounting groove (211), and the top surface of the graphite foam block (22) has a power supply mounting groove (221) for mounting the power supply module, and the outer wall surface of the power supply module is tightly fitted with the inner wall surface of the power supply mounting groove (221). 2.The high-efficiency heat-dissipation power supply structure for a UAV of claim 1, wherein, The chassis heat dissipation frame (2) further comprises a pressing net frame (23) which is buckled on the upper part of the mounting groove (211) and is connected with the support net frame (21) through a first bolt (24), and the pressing net frame (23) presses the top surface of the power supply module. 3.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, The side wall of the support net frame (21) is connected with the bottom opening of the inner cavity (11) of the UAV body (1) through a second bolt (25), and the part of the support net frame (21) protruding from the bottom surface of the UAV body (1) is a circular truncated cone structure which is wide at the top and narrow at the bottom. 4.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, The side wall of the graphite foam block (22) is fastened and connected with the mounting groove (211) through a third bolt (26). 5.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, A plurality of through horizontal ventilation and heat dissipation channels (222) are formed in the bottom of the graphite foam block (22), and a plurality of vertical ventilation and heat dissipation channels (223) are formed in the inner bottom surface of the power supply mounting groove (221) of the graphite foam block (22) and are in communication with the horizontal ventilation and heat dissipation channels (222). 6.The high-efficiency heat-dissipation power supply structure for UAVs of claim 5, wherein, The openings of the horizontal ventilation and heat dissipation channels (222) and the vertical ventilation and heat dissipation channels (223) are formed into a horn structure. 7.The high-efficiency heat-dissipation power supply structure for UAVs of claim 6, wherein, The horizontal plane where the horizontal ventilation and heat dissipation channels (222) are located exceeds the bottom opening of the UAV body (1) downward. 8.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, The support net frame (21) is supported by a ring frame (212) as the main body and is connected with a plurality of ring frames (212) through a net frame connecting rod (213). 9.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, The power supply mounting groove (221) is set as a circular groove or a rectangular groove according to the shape requirement of the power supply module. 10.The high-efficiency heat-dissipation power supply structure for UAVs of claim 1, wherein, The support net frame (21) is made of PP or PVC material.

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