A drone rack and drone capable of storing hydrogen

Abstract

A drone frame that can be used to store hydrogen, comprising: a frame body, the frame body is an internal hollow structure, and is respectively provided with an inflation valve and an exhaust valve; the inflation valve is used to store hydrogen and inflate; the exhaust valve is used to connect a fuel cell reactor. The frame body is an axisymmetric structure, comprising: a tic-tac-toe top bracket portion and a double U-shaped bottom bracket portion; each end of the tic-tac-toe top bracket portion is provided with a rotor motor; the double U-shaped bottom bracket portion comprises: two symmetrically designed U-shaped bottom brackets and two parallel support rods; the two ends of the two parallel support rods are respectively connected to the bottom of the two U-shaped bottom brackets. The present invention is to further structurally design the hydrogen storage device, so that it can reduce the internal space occupied by the drone without reducing the hydrogen storage performance, improve the aerodynamic performance of the drone, and thereby improve the flight efficiency of the drone and increase the drone's endurance time.

Description

[Technical field]

[0001] The present invention belongs to the technical field of fuel cell drones, and in particular relates to a drone frame and a drone that can be used to store hydrogen. [Background technology]

[0002] Unmanned aerial vehicle (UAV) is an unmanned aircraft controlled by radio remote control equipment and self-contained program control devices. UAV is actually a general term for unmanned aerial vehicles. From a technical point of view, it can be divided into: unmanned helicopters, unmanned fixed-wing aircraft, unmanned multi-rotor aircraft, unmanned airships and unmanned paragliders. The characteristic of UAV is that it has no cockpit on board, but is equipped with autopilots, program control devices and other equipment. The personnel on the ground, on ships or at the mother aircraft remote control station use radar and other equipment to track, locate, remotely control, telemeter and digitally transmit it.

[0003] Among various types of drones, multi-rotor drones have gradually become the mainstream type of micro drones or aircraft models due to their advantages such as simple operation and high reliability. However, the range of multi-rotor drones has always been a weakness in their design and development. For example, the general flight time of multi-rotor drones powered by lithium batteries is less than half an hour, so they cannot effectively perform beyond-visual-range flight, especially in complex terrains such as mountains and waters, and therefore cannot complete professional and complex flight missions.

[0004] As a new type of efficient power supply method, hydrogen fuel cells are being promoted and applied in the field of drones. Under the same weight conditions, hydrogen fuel cells can provide drones with significantly longer flight time than lithium polymer batteries. Hydrogen fuel cells generate electricity through a chemical reaction between hydrogen and oxygen in the battery stack. Oxygen is readily available through the atmosphere, and hydrogen is compressed and stored in high-pressure hydrogen tanks. Currently, high-pressure hydrogen tanks are generally large in size, making it difficult to miniaturize drones using hydrogen fuel cells. At the same time, the large size leads to a decrease in the aerodynamic performance of drones, which in turn reduces the flight efficiency of drones and reduces the flight time of drones.

[0005] Chinese invention patent ZL201610149836.7 discloses a fuel cell drone, in which a fuel cell system is arranged on the central platform of the frame, and an inflatable hydrogen storage component is arranged in the fuel cell system. When the drone needs to reduce lift, the non-compressed hydrogen stored in the inflatable hydrogen storage component can be directly supplied to the fuel cell through a pipeline (or can also be sent back to the intermediate storage device around the hydrogen source), so that the inflatable hydrogen storage component shrinks to reduce lift / buoyancy. Although this technical solution can increase the endurance time to a certain extent, it still cannot completely solve the problem of the large size of the drone and cannot greatly improve the flight efficiency of the drone.

[0006] In view of this, the inventor conducted in-depth research on the defects of the prior art, and thus came up with this case. [Summary of the invention]

[0007] One of the technical problems to be solved by the present invention is to provide a drone frame with a simple structure and light weight that can be used to store hydrogen.

[0008] The second technical problem to be solved by the present invention is to provide a drone with a simple and lightweight drone frame that can be used to store hydrogen, and the drone has a long driving range.

[0009] The present invention is achieved in that:

[0010] A drone frame that can be used to store hydrogen includes: a frame body, the frame body is an internal hollow structure, and is respectively provided with an inflation valve and an exhaust valve; the inflation valve is used for storing hydrogen and inflating; the exhaust valve is used for connecting a fuel cell reactor.

[0011] Furthermore, the frame body is an axisymmetric structure, comprising: a tic-tac-toe-shaped top bracket portion and a double U-shaped bottom bracket portion;

[0012] Each end of the tic-tac-toe-shaped top bracket portion is provided with a rotor motor;

[0013] The double U-shaped bottom bracket part comprises: two symmetrically designed U-shaped bottom brackets and two parallel support rods;

[0014] The two ends of the two parallel support rods are respectively connected to the bottoms of the two U-shaped bottom brackets.

[0015] Furthermore, the inflation valve is arranged at the middle part of one of the support rods of the double U-shaped bottom bracket part, and the air outlet valve is arranged at the middle part of the tic-tac-toe-shaped top bracket part.

[0016] Furthermore, the frame body is made of high-strength metal material.

[0017] Furthermore, the cross section of the frame body is a perfect circle to ensure uniform force.

[0018] Furthermore, at least two mutually symmetrically arranged reinforcing ribs are provided inside each rod of the frame body, and holes are provided on the reinforcing ribs so that hydrogen can pass through.

[0019] Furthermore, the outer layer of the rack of the rack body is coated with a heat-insulating coating to prevent the internal temperature from rising due to long-term sunlight.

[0020] Furthermore, a pressure sensor is provided inside the frame body. When the hydrogen content changes, the rotor motor is instructed to provide power compensation according to the hydrogen content to ensure the consistency of lift.

[0021] A drone comprises a drone frame as described above that can be used to store hydrogen.

[0022] The advantages of the present invention are as follows: the present invention further designs the structure of the hydrogen storage device, so that it can reduce the internal space occupied by the UAV without reducing the hydrogen storage performance, improve the aerodynamic performance of the UAV, and further improve the flight efficiency of the UAV and increase the endurance time of the UAV.

Brief Description of the Drawings

[0023] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the frame of the present invention.

[0025] Figure 2 It is a front view of a frame of the present invention.

[0026] Figure 3 It is the left side view of the frame of the present invention.

[0027] Figure 4 It is a top view of the frame of the present invention.

[0028] Figure 5 It is a bottom view of the frame of the present invention. [Specific implementation method]

[0029] like Figures 1 to 5 As shown, a drone frame that can be used to store hydrogen includes: a frame body 100, wherein the frame body 100 is an internal hollow structure and is made of a high-strength metal material (for example, titanium alloy, etc.).

[0030] The frame body 100 is an axisymmetric structure, comprising a tic-tac-toe-shaped top bracket portion 1 and a double U-shaped bottom bracket portion 2 .

[0031] Each end of the tic-tac-toe-shaped top bracket portion 1 is provided with a rotor motor 3;

[0032] The double U-shaped bottom bracket part 2 comprises: two symmetrically designed U-shaped bottom brackets 21 and two parallel support rods 22; the two ends of the two parallel support rods 22 are respectively connected to the bottoms of the two U-shaped bottom brackets 21. A charging valve 4 is provided in the middle of one of the support rods 22 for hydrogen storage and charging.

[0033] An air outlet valve 5 is provided in the middle of the crisscross top bracket portion 1 for connecting to the fuel cell reactor.

[0034] The cross section of the rack body 100 is a perfect circle to ensure uniform force. Each rod of the rack body 100 is provided with at least two mutually symmetrically arranged reinforcing ribs inside, and holes are provided on the reinforcing ribs so that hydrogen can pass through. The outer layer of the rack body 100 is coated with a heat-insulating coating to prevent the internal temperature from rising due to long-term sunlight.

[0035] A pressure sensing device (not shown) is also provided inside the frame body 100. The pressure sensing device is connected to the MCU. The internal pressure data obtained by the MCU through the pressure sensing device can be converted into hydrogen content, and the load change value is calculated in real time according to the hydrogen content, so as to control the power compensation of the rotor motor 3 to ensure the consistency of lift.

[0036] Workflow:

[0037] The charging valve 4 is connected to an external hydrogen charging device to charge hydrogen into the internal hollow structure of the rack body 100 for storage. After the charging is completed, the connection between the valve of the charging valve 4 and the external hydrogen charging device is disconnected;

[0038] The gas outlet valve 5 is connected to the fuel cell reactor to output hydrogen gas to react chemically with oxygen in the air to generate electrical energy.

[0039] The present invention also provides a drone, comprising the drone frame as described above that can be used to store hydrogen.

[0040] The present invention further designs the structure of the hydrogen storage device, so as to reduce the internal space occupied by the UAV without reducing the hydrogen storage performance, improve the aerodynamic performance of the UAV, and further improve the flight efficiency of the UAV and increase the endurance time of the UAV.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drone rack that can be used to store hydrogen, characterized in that: include: The frame body is an internal hollow structure, and an air charging valve and an air outlet valve are respectively provided on the frame body; The inflation valve is used for storing hydrogen and inflating; the outlet valve is used for connecting to the fuel cell reactor; The frame body is an axisymmetric structure, comprising: a tic-tac-toe-shaped top bracket portion and a double U-shaped bottom bracket portion; Each end of the tic-tac-toe-shaped top bracket portion is provided with a rotor motor; The double U-shaped bottom bracket part comprises: two symmetrically designed U-shaped bottom brackets and two parallel support rods; The two ends of the two parallel support rods are respectively connected to the bottoms of the two U-shaped bottom brackets; The cross section of the frame body is a perfect circle to ensure uniform force; At least two mutually symmetrically arranged reinforcing ribs are arranged inside each rod of the frame body, and holes are arranged on the reinforcing ribs so that hydrogen can pass through.

2. The drone frame for storing hydrogen as claimed in claim 1, characterized in that: The inflation valve is arranged at the middle part of one of the support rods of the double U-shaped bottom bracket part, and the air outlet valve is arranged at the middle part of the tic-tac-toe-shaped top bracket part.

3. The drone frame for storing hydrogen as claimed in claim 1, characterized in that: The frame body is made of high-strength metal material.

4. The drone frame for storing hydrogen as claimed in claim 1, characterized in that: The outer layer of the frame of the frame body is coated with a heat-insulating coating to prevent the internal temperature from rising due to long-term sunlight.

5. The drone frame for storing hydrogen as claimed in claim 1, characterized in that: A pressure sensor is arranged inside the frame body. When the hydrogen content changes, the rotor motor is instructed to provide power compensation according to the hydrogen content to ensure the consistency of lift.

6. A drone, characterized in that: It comprises a drone frame that can be used for storing hydrogen as described in any one of claims 1 to 5.

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