Unmanned aerial vehicle hydrogen fuel cell test bench

Abstract

The utility model relates to unmanned aerial vehicle hydrogen fuel cell test bench, including cuboid test frame, the front end of test frame is fixed with the front beam frame of rectangle, the upper end of front beam frame is fixed with horizontal frame, and the both sides of horizontal frame are connected with propeller, test frame is inserted and is equipped with fuel cell pod, and fuel cell pod is by lower cabin body and upper hatch cover, and the bottom of lower cabin body of fuel cell pod bears and reaches a few joists, and the both ends of joist are fixed on test frame respectively, and the both ends of a few hold down beams that are equipped with fuel cell pod upper are shaped with the lug, and the lug bears on the side frame of test frame both sides and is fixed on test frame through bolt, and the lower end surface of hold down beam middle part is shaped with the hold down piece, and the hold down piece presses on the upper hatch cover of fuel cell pod. This battery test bench is simple and compact, and the installation of hydrogen fuel cell pod is conveniently realized, and the test experiment of replacing unmanned aerial vehicle is carried out, and the replacement of fuel cell in pod is also convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of test racks, and more specifically to a test rack for hydrogen fuel cells for unmanned aerial vehicles. Background Technology

[0002] A drone pod is a streamlined, short section installed under the fuselage or wings of a drone. Existing drone pods generally integrate payloads such as optoelectronic devices, electronic equipment, or weapons to perform functional modules for target search, identification, tracking, positioning, and execution of specific tasks. Simultaneously, the drone pod can also house a hydrogen fuel cell, which is installed and connected to the drone as a carrier for the fuel cell. However, drones equipped with hydrogen fuel cell pods require testing. Directly using drones for testing carries significant risks. Therefore, a dedicated test bench for testing hydrogen fuel cell pods can be designed and manufactured, similar to the test benches used in the automotive industry for testing automotive parts. The design process must also consider the frequent replacement of hydrogen fuel cells (testing experiments require the use of hydrogen fuel cell stacks of different power ratings), necessitating a structure that facilitates battery replacement. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a test bench for hydrogen fuel cells in unmanned aerial vehicles (UAVs). This test bench facilitates the installation and mounting of hydrogen fuel cell pods, allowing UAVs to be used for testing and experimentation. At the same time, its structure also facilitates the replacement of fuel cells inside the pod.

[0004] A test bench for hydrogen fuel cells for unmanned aerial vehicles includes a rectangular test frame. Vertical beams are fixed to the side frames on both sides of the test frame. Wheels are fixed to the four corners of the lower end of the test frame. A rectangular front beam frame is fixed to the front end of the test frame, and a horizontal frame is fixed to the upper end of the front beam frame. Propellers are longitudinally arranged and extend from both sides of the horizontal frame to the front beam frame. A longitudinally arranged fuel cell pod is inserted into the test frame. The fuel cell pod consists of a lower pod and an upper cover. Several longitudinally distributed support beams abut against the bottom of the lower pod, with both ends of the support beams fixed to the test frame. Several longitudinally distributed pressure beams are located above the fuel cell pod. L-shaped lugs are formed at both ends of the pressure beams, which abut against the side frames on both sides of the test frame and are fixed to the test frame with bolts. A pressure member is formed on the lower end of the middle of the pressure beam, pressing against the upper cover of the fuel cell pod.

[0005] A rear support plate is located above the front end of the fuel cell pod, and a test switch is fixedly mounted on the rear support plate. A front support plate is located on the front side of the rear support plate. Both the front and rear support plates are fixed to the test frame. An electrical control box is fixed on the front support plate. The power supply components in the electrical control box are electrically connected to the propeller and the data analysis circuit board respectively through data lines. The data analysis circuit board is fixed to a horizontal side wing plate, which is fixed to both sides of the upper part of the test frame. A rectifier is fixed to the side wing plate and electrically connected to the data lines of the data analysis circuit board and the electrical control box. Several hydrogen fuel cells are bolted to the lower compartment of the fuel cell pod. A power socket is formed on the hydrogen fuel cell, and a power line is plugged into the power socket. The hydrogen fuel cell is electrically connected to the power supply in the electrical control box through the power line. The test switch is electrically connected to the starting power supply of the hydrogen fuel cell running in the fuel cell pod through a wire.

[0006] Preferably, the upper cover of the fuel cell pod is fixed to the lower pod body by bolts; the fuel cell pod is boat-shaped, and a positioning groove matching the lower part of the fuel cell pod is formed on the support beam, and the fuel cell pod is set in the positioning groove of the support beam; the lower surface of the pressure member is arc-shaped and coincides with the upper surface of the upper cover.

[0007] Preferably, the lower body of the fuel cell pod is formed with several longitudinally distributed hydrogen fuel cell mounting compartments, and the rear end of the rear support plate is formed with a clearance slot opposite to the fuel cell mounting compartment.

[0008] Preferably, a horizontal side support plate is provided below the side wing plate, and the side support plate is fixedly connected to both sides of the bottom of the test frame; a horizontal front support plate is fixedly connected to the bottom of the test frame directly below the electrical control box, and counterweights are fixedly connected to both the front support plate and the side support plate.

[0009] Preferably, diagonal supports are fixedly connected between the two ends of the transverse frame and the two side walls of the front beam frame, between the lower end face of the side wing plate and the two side walls of the test frame, and between the upper end face of the side bearing plate and the two side walls of the test frame.

[0010] Preferably, the horizontal frame has several horizontally distributed and vertically arranged support beams, and the two ends of the horizontal frame are respectively fixedly connected to propeller mounting brackets by bolts, and the propeller is fixedly connected to the propeller mounting brackets.

[0011] Preferably, the power supply components in the electrical control box include a lithium battery and a high-voltage DC contactor. The lithium battery provides power to the propeller and data analysis circuit board through the data line, and the high-voltage DC contactor is electrically connected to the data line.

[0012] The beneficial effects of this utility model are as follows:

[0013] This battery test bench has a simple and compact structure, which facilitates the installation and mounting of hydrogen fuel cell pods, replacing drones for testing and experimentation. Its structure also makes it easy to replace the fuel cells inside the pod. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front view structural diagram of the present invention;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 This is a side view of the present invention with a data analysis circuit board installed.

[0018] In the diagram: 1. Test frame; 2. Front beam frame; 3. Front beam frame; 4. Propeller; 5. Support beam; 6. Fuel cell pod; 7. Pressure beam; 71. Support lug; 72. Pressure member; 8. Rear support plate; 81. Clearance slot; 9. Test switch; 10. Electrical control box; 11. Front support plate; 12. Wheel; 13. Data analysis circuit board; 14. Rectifier; 15. Side wing plate; 16. Side bearing plate; 17. Front bearing plate; 18. Counterweight; 19. Diagonal support. Detailed Implementation

[0019] Example: See Figures 1 to 4 As shown, the unmanned aerial vehicle (UAV) hydrogen fuel cell test bench includes a rectangular test frame 1. Vertical beams are fixed longitudinally within the side frames on both sides of the test frame 1. Wheels 12 are fixed to the four corners of the lower end face of the test frame 1. A rectangular front beam frame 2 is fixed to the front end of the test frame 1. A horizontal frame 3 is fixed to the upper end of the front beam frame 2. Propellers 4 are longitudinally arranged and extend from both sides of the horizontal frame 3 beyond the front beam frame 2. A longitudinally arranged fuel cell pod 6 is inserted into the test frame 1, and the fuel cell pod 6 is located within the lower compartment. The fuel cell pod 6 consists of a lower compartment and an upper cover. The bottom of the lower compartment of the fuel cell pod 6 is supported by several longitudinally distributed support beams 5. The two ends of the support beams 5 are fixed to the test frame 1. The upper part of the fuel cell pod 6 is provided with several longitudinally distributed pressure beams 7. The two ends of the pressure beams 7 are formed with L-shaped lugs 71. The lugs 71 are supported by the side frames on both sides of the test frame 1 and fixed to the test frame 1 by bolts. The lower end face of the middle part of the pressure beams 7 is formed with a pressure member 72, which presses against the upper cover of the fuel cell pod 6.

[0020] A rear support plate 8 is located above the front end of the fuel cell pod 6. A test switch 9 is fixedly connected to the rear support plate 8. A front support plate 11 is located on the front side of the rear support plate 8. Both the front support plate 11 and the rear support plate 8 are fixedly connected to the test frame 1. An electrical control box 10 is fixedly connected to the front support plate 11. The power supply components in the electrical control box 10 are electrically connected to the propeller 4 and the data analysis circuit board 13 respectively through data lines. The data analysis circuit board 13 is fixedly connected to the horizontal side wing plate 15. The side wing plate 15 is fixedly connected to both sides of the upper part of the test frame 1. A rectifier 14 is fixedly connected to the side wing plate 15. The rectifier 14 is electrically connected to the data lines of the data analysis circuit board 13 and the electrical control box 10. Several hydrogen fuel cells are bolted to the lower compartment of the fuel cell pod 6. A power socket is formed on the hydrogen fuel cell. A power line is plugged into the power socket. The hydrogen fuel cell is electrically connected to the power supply in the electrical control box 10 through the power line. The test switch 9 is electrically connected to the starting power supply of the hydrogen fuel cell running in the fuel cell pod 6 through a wire.

[0021] The upper cover of the fuel cell pod 6 is fixed to the lower pod body by bolts. The fuel cell pod 6 is boat-shaped, and a matching positioning groove is formed on the support beam 5. The fuel cell pod 6 is set in the positioning groove of the support beam 5. The lower surface of the pressure member 72 is arc-shaped and coincides with the upper surface of the upper cover. The shape and size of the fuel cell pod 6 are fixed. Since the outer surface of the pod body is a curved structure, a matching positioning groove needs to be opened on the support beam 5 to ensure the stability of the fuel cell pod 6 after it is fixed.

[0022] The lower compartment of the fuel cell pod 6 has several longitudinally distributed hydrogen fuel cell mounting compartments. The rear end of the rear support plate 8 has a clearance slot 81 opposite to the fuel cell mounting compartment. By removing the pressure beam 7, the upper cover of the fuel cell pod 6 can be removed from the rear of the test frame 1. However, the position of the hydrogen fuel cell mounting compartment is fixed, and the hydrogen fuel cell needs to be fixed after entering the fuel cell pod 6 from above. Therefore, the clearance slot 81 is opened at the rear end of the rear support plate 8 to avoid interference when replacing the hydrogen fuel cell.

[0023] Below the side wing plate 15, there is a horizontal side support plate 16, which is fixed to both sides of the bottom of the test frame 1. A horizontal front support plate 17 is fixed to the bottom of the test frame 1 directly below the electrical control box 10. Counterweights 18 are fixedly connected to both the front support plate 17 and the side support plate 16. The test frame 1 combined with the side wing plate 15 forms a structure similar to a light sport aircraft, but the weight of the fuselage nose and the two wings needs to be compensated by the counterweights 18.

[0024] Diagonal supports 19 are fixedly connected between the two ends of the transverse frame 3 and the two side walls of the front beam frame 2, between the lower end face of the side wing plate 15 and the two side walls of the test frame 1, and between the upper end face of the side bearing plate 16 and the two side walls of the test frame 1. The diagonal supports 19 can improve the strength of the test bench.

[0025] The horizontal frame 3 has several horizontally distributed and vertically arranged support beams. Both ends of the horizontal frame 3 are fixedly connected to propeller mounting brackets by bolts, and the propeller 4 is fixedly connected to the propeller mounting brackets.

[0026] The power supply components in the electrical control box 10 include a lithium battery and a high-voltage DC contactor. The lithium battery provides power to the propeller 4 and the data analysis circuit board 13 through the data line, and the high-voltage DC contactor is electrically connected to the data line. The high-voltage DC contactor is an electromagnetic switch that enables remote control of power on and off.

[0027] Working principle: This structure is a test bench for hydrogen fuel cells of unmanned aerial vehicles (UAVs). Its structure adopts a frame structure instead of a UAV, which is similar to the UAV and facilitates the setting of various test components. For example, the side wing plate 15 can be used to support the data analysis circuit board 13. At the same time, its structure is simple, compact and strong. During the test, the test switch 9 can be turned on to start the hydrogen fuel cell in the fuel cell pod 6. The generated electricity is stored in the lithium battery in the electrical control box 10. The lithium battery powers the data analysis circuit board 13 and the propeller 4. The propeller 4 runs, and at the same time the data analysis circuit board 13 analyzes the running data and records the test data.

[0028] Since the main test is of fuel cell pod 6, the structure of the pod 6 remains unchanged. The only change is to replace it with the hydrogen fuel cell inside. When replacing it, the bolts are loosened to easily remove the pressure beam 7, and then the upper cover on the fuel cell pod 6 can be removed for replacement. The replacement is relatively convenient and quick.

[0029] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A test bench for hydrogen fuel cells for unmanned aerial vehicles, comprising a rectangular test frame (1), wherein longitudinally distributed vertical beams are fixed in the side frames on both sides of the test frame (1), and wheels (12) are fixed to the four corners of the lower end face of the test frame (1), characterized in that: A rectangular front beam frame (2) is fixed to the front end of the test frame (1), and a horizontal frame (3) is fixed to the upper end of the front beam frame (2). The two sides of the horizontal frame (3) extend from the front beam frame (2) and are connected to longitudinally arranged propellers (4). A longitudinally arranged fuel cell pod (6) is inserted into the test frame (1). The fuel cell pod (6) consists of a lower compartment and an upper cover. The bottom of the lower compartment of the fuel cell pod (6) abuts against several longitudinally distributed support beams (5). (5) is fixed to the test frame (1) at both ends. Several longitudinally distributed pressure beams (7) are provided above the fuel cell pod (6). L-shaped lugs (71) are formed at both ends of the pressure beams (7). The lugs (71) abut against the side frames on both sides of the test frame (1) and are fixed to the test frame (1) by bolts. A pressure member (72) is formed on the lower end face of the middle part of the pressure beam (7). The pressure member (72) presses against the upper cover of the fuel cell pod (6). A rear support plate (8) is provided above the front end of the fuel cell pod (6). A test switch (9) is fixedly connected to the rear support plate (8). A front support plate (11) is provided on the front side of the rear support plate (8). Both the front support plate (11) and the rear support plate (8) are fixedly connected to the test frame (1). An electrical control box (10) is fixedly connected to the front support plate (11). The power supply components in the electrical control box (10) are electrically connected to the propeller (4) and the data analysis circuit board (13) respectively through data lines. The data analysis circuit board (13) is fixedly connected to the horizontal side wing plate (15). The side wing plate (15) is fixedly connected to the test frame (1). On both sides of the upper part of the frame (1), rectifiers (14) are fixedly connected to the side wing plates (15). The rectifiers (14) are electrically connected to the data lines of the data analysis circuit board (13) and the electrical control box (10). Several hydrogen fuel cells are fixedly installed in the lower compartment of the fuel cell pod (6) by bolts. A power socket is formed on the hydrogen fuel cell. A power line is plugged into the power socket. The hydrogen fuel cell is electrically connected to the power supply in the electrical control box (10) through the power line. The test switch (9) is electrically connected to the starting power supply of the hydrogen fuel cell in the fuel cell pod (6) through the wire.

2. The UAV hydrogen fuel cell test bench according to claim 1, characterized in that: The upper cover of the fuel cell pod (6) is fixed to the lower pod body by bolts; the fuel cell pod (6) is boat-shaped, and a matching positioning groove for the fuel cell pod (6) is formed on the support beam (5), and the fuel cell pod (6) is set in the positioning groove of the support beam (5); the lower surface of the pressure member (72) is arc-shaped and coincides with the upper surface of the upper cover.

3. The unmanned aerial vehicle (UAV) hydrogen fuel cell test bench according to claim 1, characterized in that: The lower body of the fuel cell pod (6) is formed with several longitudinally distributed hydrogen fuel cell mounting compartments, and the rear end of the rear support plate (8) is formed with a clearance slot (81) opposite to the fuel cell mounting compartment.

4. The unmanned aerial vehicle (UAV) hydrogen fuel cell test bench according to claim 1, characterized in that: A horizontal side support plate (16) is provided below the side wing plate (15), and the side support plate (16) is fixed to both sides of the bottom of the test frame (1); a horizontal front support plate (17) is fixed to the bottom of the test frame (1) directly below the electrical control box (10), and counterweights (18) are fixedly connected to both the front support plate (17) and the side support plate (16).

5. The unmanned aerial vehicle (UAV) hydrogen fuel cell test bench according to claim 4, characterized in that: Diagonal supports (19) are fixedly connected between the two ends of the transverse frame (3) and the two side walls of the front beam frame (2), between the lower end face of the side wing plate (15) and the two side walls of the test frame (1), and between the upper end face of the side bearing plate (16) and the two side walls of the test frame (1).

6. The unmanned aerial vehicle (UAV) hydrogen fuel cell test bench according to claim 1, characterized in that: The horizontal frame (3) has several horizontally distributed and vertically arranged support beams. The two ends of the horizontal frame (3) are respectively fixedly connected to the propeller mounting bracket by bolts, and the propeller (4) is fixedly connected to the propeller mounting bracket.

7. The unmanned aerial vehicle (UAV) hydrogen fuel cell test bench according to claim 1, characterized in that: The power supply components in the electrical control box (10) include a lithium battery and a high-voltage DC contactor. The lithium battery provides power to the propeller (4) and the data analysis circuit board (13) through the data line, and the high-voltage DC contactor is electrically connected to the data line.

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