Hydrogen energy unmanned aerial vehicle carrying 300w fuel cell system

Abstract

The hydrogen energy unmanned aerial vehicle carrying the 300w fuel cell system comprises an unmanned aerial vehicle rack, a first motor is arranged on the unmanned aerial vehicle rack, propellers are arranged on the two sides of the unmanned aerial vehicle rack, and supporting arms are arranged on the two sides of the unmanned aerial vehicle rack. In the invention, the hydrogen storage system and the hydrogen fuel cell system are added on the basis of a pure electric unmanned aerial vehicle system, a fuel cell / storage battery is used as a power source to provide power, and the hydrogen storage system is added to provide fuel, so that the unmanned aerial vehicle is green and environment-friendly, and the endurance mileage is increased; a second motor works to drive a rotating gear to rotate, the rotating gear rotates to drive a moving rack to move, a moving plate moves to sequentially drive an L-shaped plate and first clamping plates to move, and the two first clamping plates are matched to clamp the fuel cell, so that the fuel cell is fixedly mounted conveniently; when the fuel cell works to generate heat, the heat absorption plate is attached to the side wall of the working fuel cell to conduct heat generated by working of the fuel cell, and heat dissipation of working of the fuel cell is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a hydrogen-powered unmanned aerial vehicle equipped with a 300w fuel cell system. Background Art

[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device, or operated completely or intermittently autonomously by an onboard computer.

[0003] In the prior art, for example, Chinese patent number CN110884667A, titled “A UAV battery and a UAV”, comprises a battery compartment, a battery body, a pressing bag and a ventilation mechanism, wherein a pressing bag is fixedly mounted on the inner lower surface of the battery compartment; a battery body is fixedly connected to the upper surface of the pressing bag; ventilation mechanisms are arranged on both sides of the battery body; the ventilation mechanism comprises a clamping plate and a connecting tube; two clamping plates are arranged as a group, a connecting tube is embedded in the middle of the clamping plate, and the upper and lower ends of the clamping plate are slidably connected to the left and right side walls of the battery compartment through a spring; the connecting tube is made of rubber material, and the interior of the connecting tube is arranged to be hollow.

[0004] As in the above patent, the drone is powered directly by batteries as a power source, the cruising range is limited, and discarded batteries will cause more serious secondary pollution to the environment.

[0005] Therefore, we proposed a hydrogen-powered drone equipped with a 300w fuel cell system to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a hydrogen-powered drone equipped with a 300w fuel cell system to solve the problem that the drone proposed in the above background technology is powered by a battery directly as a power source, has a limited cruising range, and discarded batteries will cause more serious secondary pollution to the environment.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydrogen-powered drone equipped with a 300w fuel cell system, comprising a drone frame, a first motor is arranged on the drone frame, propellers are arranged on both sides of the drone frame, supporting arms are arranged on both sides of the drone frame, landing gears are arranged on both sides of the bottom of the drone frame, a mounting bracket is fixedly connected to the landing gear, a mounting base is fixedly connected to the mounting bracket, a fuel cell is arranged on the mounting base, a hydrogen storage mechanism is arranged on the fuel cell, an intake valve is arranged on the hydrogen storage mechanism, and a DC / DC converter is fixedly connected to the mounting base.

[0008] The frame structure of the drone is made of carbon fiber. The four arms adopt a direct-connected plug-in arm structure. The hydrogen storage mechanism is a 2.5L hydrogen cylinder with a hydrogen storage pressure of 35MPa, which is light and safe. The fuel cell adopts a 300W proton exchange membrane fuel cell, and the air cooling and air supply are integrated to simplify the structure and reduce the weight, fundamentally improving the endurance of the whole machine. The FC+DC / DC+B power system topology solution is adopted. The fuel cell and the battery are mixed for power supply. The DC / DC converter outputs current and voltage to achieve active control of the fuel cell power, while the battery passively realizes charge and discharge control according to the power balance principle, improves system efficiency, reduces hydrogen consumption, increases flight time, and extends service life. A hydrogen storage system and a hydrogen fuel cell system are added to the pure electric drone system to solve the drone endurance problem. This fuel cell drone uses fuel cells / batteries as the power source and is equipped with a hydrogen storage system to provide fuel. It is green, environmentally friendly and pollution-free, keeps the fuselage stable during operation, and fundamentally improves the endurance mileage.

[0009] A hydrogen storage system and a hydrogen fuel cell system are added to the pure electric UAV system to solve the UAV endurance problem. This fuel cell UAV is powered by a fuel cell / battery and equipped with a hydrogen storage system to provide fuel. It is green, environmentally friendly and pollution-free. It keeps the fuselage stable during operation and fundamentally improves the endurance mileage. Compared with traditional power systems, it has the advantages of high efficiency, fast start-up, simple power control, high reliability, low acoustic and thermal noise, and pollution-free emissions.

[0010] Preferably, a first clamping plate is provided on both sides of the fuel cell, an L-shaped plate is fixedly connected to the first clamping plate, a movable plate is fixedly connected to the other end of the L-shaped plate, connecting columns are fixedly connected on both sides of the movable plate, a first sliding block is fixedly connected to one of the connecting columns, a movable rack is fixedly connected to the first sliding block, and a rotating gear is meshed on the movable rack.

[0011] Preferably, a square cavity is provided inside the mounting base, a guide rod is slidably connected to the first sliding block, and two ends of the guide rod are respectively fixedly connected to two sides of the mounting base.

[0012] Preferably, a second sliding block is slidably connected to the guide rod, and another connecting column is fixedly connected to the second sliding block.

[0013] Preferably, a connecting shaft is fixedly connected to the rotating gear, one end of the connecting shaft is fixedly connected to an output end of a second motor, and the second motor is fixedly connected to a mounting base.

[0014] Preferably, a connecting plate is fixedly connected to the first clamping plate, a second clamping plate is fixedly connected to the connecting plate, and the second clamping plate is overlapped on the outside of the hydrogen storage mechanism.

[0015] Preferably, the second clamping plate is configured to be arc-shaped.

[0016] Preferably, the fuel cell is placed in a placement groove, and the placement groove is fixedly connected to the mounting base.

[0017] The second motor drives the connecting shaft to rotate, and the rotating gear fixedly connected on the connecting shaft rotates accordingly, and the two rotating gears rotate in opposite directions. Through the meshing between the rotating gear and the moving rack, the rotating gear rotates to drive the moving rack to move, the first sliding block slides on the guide rod of the sliding connection, and the second sliding block slides on the guide rod of the sliding connection, so that the movement of the moving plate is more stable, and the movement of the moving plate drives the L-shaped plate and the first clamping plate to move in turn, and the two first clamping plates cooperate to clamp the fuel cell, which is convenient for fixing and installing the fuel cell. At the same time, the connecting plate and the second clamping plate move accordingly, which is convenient for clamping and installing the hydrogen storage mechanism. When disassembly is required, the two second motors can be reversed at the same time, and under the action of the meshing of the rotating gear and the moving rack, the two are driven to move in opposite directions, and the first sliding block, the connecting column, the moving plate, the L-shaped plate and the first clamping plate are driven to move in turn, and the distance between the two first clamping plates and the second clamping plates is changed, the two first clamping plates are separated from the fuel cell, and the two second clamping plates are separated from the hydrogen storage mechanism, so that the hydrogen storage mechanism and the fuel cell are disassembled, which is convenient for disassembly and assembly of the hydrogen storage mechanism and the fuel cell.

[0018] Preferably, a heat dissipation groove is provided on the inner side of the first clamping plate, and a heat absorption component is provided on the heat dissipation groove.

[0019] Preferably, the heat absorption assembly comprises a heat conduction block, a heat conduction column is fixedly connected to the heat conduction block, and one end of the heat conduction column passes through the first clamping plate and is fixedly connected to the heat absorption plate.

[0020] When the fuel cell generates heat during operation, the heat absorbing plate is attached to the side wall of the working fuel cell, and the heat conductive block, the heat conductive column and the heat absorbing plate cooperate to conduct the heat generated by the fuel cell, thereby facilitating the heat dissipation of the fuel cell and preventing the fuel cell from failing to dissipate heat in time during operation, thereby preventing heat accumulation from reducing the service life of the fuel cell.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, a hydrogen storage system and a hydrogen fuel cell system are added to the pure electric UAV system to solve the UAV endurance problem. The fuel cell UAV uses a fuel cell / battery as a power source to provide power, and is equipped with a hydrogen storage system to provide fuel. It is green, environmentally friendly and pollution-free, and can maintain the stability of the fuselage during operation, thereby fundamentally improving the endurance mileage. Compared with traditional power systems, it has the advantages of high efficiency, fast start-up, simple power control, high reliability, low acoustic and thermal noise, and no pollution from emissions;

[0023] 2. In the present invention, the second motor drives the rotating gear to rotate, and the two rotating gears rotate in opposite directions. The rotating gear drives the moving rack to move, and the movement of the moving plate drives the L-shaped plate and the first clamping plate to move in turn. The two first clamping plates cooperate to clamp the fuel cell, and the fuel cell can be fixedly installed and disassembled;

[0024] 3. In the present invention, when the fuel cell generates heat during operation, the heat absorbing plate is attached to the side wall of the working fuel cell, and the heat conductive block, the heat conductive column and the heat absorbing plate cooperate to conduct the heat generated by the fuel cell, thereby facilitating the heat dissipation of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall stereogram of the hydrogen-powered drone equipped with a 300w fuel cell system according to the present invention;

[0026] Figure 2 This is a three-dimensional diagram of the fuel cell installation of a hydrogen-powered UAV equipped with a 300w fuel cell system according to the present invention;

[0027] Figure 3 This is a top view of the fuel cell installation of a hydrogen-powered UAV equipped with a 300w fuel cell system according to the present invention;

[0028] Figure 4 This is a disassembled perspective view of the fuel cell of the hydrogen-powered UAV equipped with a 300w fuel cell system of the present invention;

[0029] Figure 5 This is a disassembled stereoscopic diagram of the heat absorption component of the hydrogen-powered UAV equipped with a 300w fuel cell system of the present invention;

[0030] Figure 6 This is a three-dimensional view of the interior of the mounting base of the hydrogen-powered UAV equipped with a 300w fuel cell system of the present invention;

[0031] Figure 7 This is a cross-sectional stereoscopic view of the mounting base of the hydrogen-powered UAV equipped with a 300w fuel cell system according to the present invention.

[0032] In the figure: 1. hydrogen storage mechanism; 2. fuel cell; 3. DC / DC converter; 4. mounting bracket; 5. intake valve; 6. first motor; 7. propeller; 8. support arm; 9. landing gear; 10. mounting base; 11. moving plate; 12. L-shaped plate; 13. heat absorption component; 131. heat conduction block; 132. heat conduction column; 133. heat absorption plate; 14. first clamping plate; 15. connecting plate; 16. second clamping plate; 17. placement groove; 18. heat dissipation groove; 19. guide rod; 20. connecting column; 21. first sliding block; 22. moving rack; 23. second motor; 24. connecting shaft; 25. second sliding block; 26. rotating gear; 27. UAV frame. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 The present invention provides a technical solution: a hydrogen-powered drone equipped with a 300w fuel cell system, including a drone frame 27, a first motor 6 is arranged on the drone frame 27, propellers 7 are arranged on both sides of the drone frame 27, support arms 8 are arranged on both sides of the drone frame 27, landing gears 9 are arranged on both sides of the bottom of the drone frame 27, mounting brackets 4 are fixedly connected to the landing gears 9, mounting brackets 4 are fixedly connected to mounting bases 10, fuel cells 2 are arranged on the mounting bases 10, hydrogen storage mechanisms 1 are arranged on the fuel cells 2, intake valves 5 are arranged on the hydrogen storage mechanisms 1, DC / DC converters 3 are fixedly connected to the mounting bases 10, and the drone frame 27 structure is made of carbon fiber. The four arms 8 adopt a direct-connected inserted arm structure, the hydrogen storage mechanism 1 is a 2.5L hydrogen cylinder with a hydrogen storage pressure of 35MPa, which is light and safe. The fuel cell 2 adopts a 300W proton exchange membrane fuel cell with integrated air cooling and air supply to simplify the structure and reduce the weight, thereby fundamentally improving the endurance of the whole machine. The FC+DC / DC+B power system topology solution is adopted, and the fuel cell 2 is hybrid-powered by the battery. The DC / DC converter 3 outputs current and voltage to achieve active control of the power of the fuel cell 2, while the battery passively realizes charge and discharge control according to the power balance principle, thereby improving system efficiency, reducing hydrogen consumption, increasing flight time, and extending service life.

[0035] like Figure 6 and Figure 7As shown, first clamping plates 14 are provided on both sides of the fuel cell 2, an L-shaped plate 12 is fixedly connected to the first clamping plates 14, a moving plate 11 is fixedly connected to the other end of the L-shaped plate 12, and connecting columns 20 are fixedly connected to both sides of the moving plate 11, a first sliding block 21 is fixedly connected to one of the connecting columns 20, a moving rack 22 is fixedly connected to the first sliding block 21, and a rotating gear 26 is meshed on the moving rack 22. Through the meshing between the moving rack 22 and the rotating gear 26, the rotating gear 26 meshed with the moving rack 22 is driven to move when the moving rack 22 rotates, and the movement of the rotating gear 26 drives the first sliding block 21, the connecting column 20, the L-shaped plate 12 and the first clamping plates 14 to move in turn, and the two first clamping plates 14 cooperate to clamp the fuel cell 2, so as to facilitate the fixed installation of the fuel cell 2.

[0036] like Figure 6 and Figure 7 As shown, a square cavity is opened inside the mounting base 10, and a guide rod 19 is slidably connected to the first sliding block 21. Both ends of the guide rod 19 are respectively fixedly connected to both sides of the mounting base 10. The hydrogen storage mechanism 1 is slidably connected to the guide rod 19, so that the movement of the mobile rack 22 is more stable.

[0037] like Figure 6 and Figure 7 As shown, a second sliding block 25 is slidably connected to the guide rod 19, and another connecting column 20 is fixedly connected to the second sliding block 25. The second sliding block 25 is slidably connected to the guide rod 19, so that the movement of the movable plate 11 is more stable.

[0038] like Figure 6 and Figure 7 As shown, a connecting shaft 24 is fixedly connected to the rotating gear 26, one end of the connecting shaft 24 is fixedly connected to the output end of the second motor 23, and the second motor 23 is fixedly connected to the mounting base 10. The connecting shaft 24 is driven to rotate by the operation of the second motor 23, and the rotating gear 26 fixedly connected to the connecting shaft 24 rotates.

[0039] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a connecting plate 15 is fixedly connected to the first clamping plate 14, and a second clamping plate 16 is fixedly connected to the connecting plate 15. The second clamping plate 16 is overlapped on the outside of the hydrogen storage mechanism 1, so that the second clamping plate 16 moves with the movement of the first clamping plate 14 to clamp and install the hydrogen storage mechanism 1.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, the second clamping plate 16 is configured to be arc-shaped, so as to facilitate clamping the hydrogen storage mechanism 1 .

[0041] like Figure 2 , Figure 3 and Figure 4 As shown, the fuel cell 2 is placed in the placement groove 17, and the placement groove 17 is fixedly connected to the mounting base 10, so as to facilitate the placement of the fuel cell 2.

[0042] like Figure 5 As shown, a heat dissipation groove 18 is provided inside the first clamping plate 14 , and a heat absorption component 13 is provided on the heat dissipation groove 18 , and the heat dissipation of the fuel cell 2 is dissipated by the heat absorption component 13 .

[0043] like Figure 5 As shown, the heat absorption component 13 includes a heat conductive block 131, to which a heat conductive column 132 is fixedly connected. One end of the heat conductive column 132 passes through the first clamping plate 14 and is fixedly connected to a heat absorption plate 133. The heat absorption plate 133 is attached to the side wall of the working fuel cell 2 to conduct the heat generated by the working fuel cell 2.

[0044] The usage and working principle of this device: the structure of the UAV frame 27 is made of carbon fiber, and the four arms adopt a direct-connected plug-in arm structure, which has a quick deployment time and a more stable flight attitude. The hydrogen storage mechanism 1 is a 2.5L hydrogen cylinder with a hydrogen storage pressure of 35MPa, which is light and safe. The fuel cell 2 adopts a 300W proton exchange membrane fuel cell, which integrates air cooling and air supply to simplify the structure and reduce the weight, thereby fundamentally improving the battery life of the whole machine. The FC+DC / DC+B power system topology solution is adopted, and the fuel cell 2 is hybrid powered by a battery. The DC / DC converter 3 outputs current and voltage to achieve active control of the power of the fuel cell 2, while the battery passively realizes charge and discharge control based on the power balance principle, thereby improving system efficiency, reducing hydrogen consumption, increasing flight time, and extending service life.

[0045] A hydrogen storage system and a hydrogen fuel cell system are added to the pure electric UAV system to solve the UAV endurance problem. This fuel cell UAV is powered by a fuel cell / battery and equipped with a hydrogen storage system to provide fuel. It is green, environmentally friendly and pollution-free. It keeps the fuselage stable during operation and fundamentally improves the endurance mileage. Compared with traditional power systems, it has the advantages of high efficiency, fast start-up, simple power control, high reliability, low acoustic and thermal noise, and pollution-free emissions.

[0046] The second motor 23 drives the connecting shaft 24 to rotate, and the rotating gear 26 fixedly connected on the connecting shaft 24 rotates accordingly. The two second motors 23 work simultaneously to make the output end rotate in opposite directions, driving the two rotating gears 26 to rotate in opposite directions. Through the engagement between the rotating gear 26 and the moving rack 22, the rotating gear 26 rotates to drive the moving rack 22 to move. The first sliding block 21 slides on the slidingly connected guide rod 19, and the second sliding block 25 slides on the slidingly connected guide rod 19, which facilitates the movement of the moving plate 11 to be more stable. The movement of the moving plate 11 drives the L-shaped plate 12 and the first clamping plate 14 to move in turn, and the distance between the two first clamping plates 14 changes. The two first clamping plates 14 cooperate to clamp the fuel cell 2, which is convenient for fixed installation of the fuel cell 2. At the same time, when the two first clamping plates 14 move, the second clamping plate 15 is connected to the fixedly connected connecting plate 15 and the second clamping plate 16 move accordingly, and the distance between the two second clamping plates 16 changes, which is convenient for clamping and installing the hydrogen storage mechanism 1. When disassembly is required, the two second motors 23 can be reversed at the same time, and under the action of the engagement of the rotating gear 26 and the moving rack 22, the two 22 are driven to move in opposite directions, and the first sliding block 21, the connecting column 20, the moving plate 11, the L-shaped plate 12 and the first clamping plate 14 are driven to move in turn, and the distance between the two first clamping plates 14 and the second clamping plates 16 is changed. The two first clamping plates 14 are separated from the fuel cell 2, and the two second clamping plates 16 are separated from the hydrogen storage mechanism 1, thereby disassembling the hydrogen storage mechanism 1 and the fuel cell 2. By fixing and disassembling the hydrogen storage mechanism 1 and the fuel cell 2, it is convenient to use the fuel cell / battery as the power source for the drone frame 1, and install a hydrogen storage system to provide fuel, thereby improving the working life of the drone.

[0047] When the fuel cell 2 generates heat during operation, the heat absorbing plate 133 is attached to the side wall of the working fuel cell 2, and the heat generated by the operation of the fuel cell 2 is conducted through the cooperation between the heat conducting block 131, the heat conducting column 132 and the heat absorbing plate 133, so as to facilitate the heat dissipation of the fuel cell 2 and prevent the fuel cell 2 from failing to dissipate heat in time during operation, thereby preventing the heat accumulation from reducing the service life of the fuel cell 2.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen-powered drone equipped with a 300w fuel cell system, characterized in that: The invention comprises an unmanned aerial vehicle frame (27), wherein a first motor (6) is arranged on the unmanned aerial vehicle frame (27), propellers (7) are arranged on both sides of the unmanned aerial vehicle frame (27), support arms (8) are arranged on both sides of the unmanned aerial vehicle frame (27), landing gears (9) are arranged on both sides of the bottom of the unmanned aerial vehicle frame (27), a mounting bracket (4) is fixedly connected to the landing gear (9), a mounting base (10) is fixedly connected to the mounting bracket (4), a fuel cell (2) is arranged on the mounting base (10), a hydrogen storage mechanism (1) is arranged on the fuel cell (2), an air intake valve (5) is arranged on the hydrogen storage mechanism (1), and a DC / DC converter (3) is fixedly connected to the mounting base (10).

2. The hydrogen-powered drone equipped with a 300w fuel cell system according to claim 1, characterized in that: The fuel cell (2) is provided with a first clamping plate (14) on both sides, an L-shaped plate (12) is fixedly connected to the first clamping plate (14), the other end of the L-shaped plate (12) is fixedly connected to a movable plate (11), and the movable plate (11) is fixedly connected to connecting columns (20) on both sides, one of the connecting columns (20) is fixedly connected to a first sliding block (21), the first sliding block (21) is fixedly connected to a movable rack (22), and the movable rack (22) is meshed with a rotating gear (26).

3. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 2, characterized in that: A square cavity is provided inside the mounting base (10), a guide rod (19) is slidably connected to the first sliding block (21), and two ends of the guide rod (19) are respectively fixedly connected to two sides inside the mounting base (10).

4. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 3, characterized in that: A second sliding block (25) is slidably connected to the guide rod (19), and another connecting column (20) is fixedly connected to the second sliding block (25).

5. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 2, characterized in that: The rotating gear (26) is fixedly connected to a connecting shaft (24), one end of the connecting shaft (24) is fixedly connected to an output end of a second motor (23), and the second motor (23) is fixedly connected to a mounting base (10).

6. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 2, characterized in that: A connecting plate (15) is fixedly connected to the first clamping plate (14), a second clamping plate (16) is fixedly connected to the connecting plate (15), and the second clamping plate (16) is overlapped on the outside of the hydrogen storage mechanism (1).

7. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 6, characterized in that: The second clamping plate (16) is configured to be arc-shaped.

8. The hydrogen-powered drone equipped with a 300w fuel cell system according to claim 1, characterized in that: The fuel cell (2) is placed in a placement groove (17), and the placement groove (17) is fixedly connected to the mounting base (10).

9. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 2, characterized in that: A heat dissipation groove (18) is provided on the inner side of the first clamping plate (14), and a heat absorption component (13) is arranged on the heat dissipation groove (18).

10. The hydrogen-powered UAV equipped with a 300w fuel cell system according to claim 9, characterized in that: The heat absorption assembly (13) comprises a heat conduction block (131), a heat conduction column (132) is fixedly connected to the heat conduction block (131), and one end of the heat conduction column (132) passes through the first clamping plate (14) and is fixedly connected to the heat absorption plate (133).

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