A hydrogen fuel cell unmanned aerial vehicle for the field of electric power

Abstract

The application relates to a hydrogen fuel cell unmanned aerial vehicle for the electric power field, which comprises a body and a high-pressure air inlet end, the body has a high-pressure area existing around the body during flight; the air inlet end is used for entering air and is arranged in air path communication with a fuel cell, the air inlet end is located in the high-pressure area, and air is sucked into the air inlet end in a high-pressure state. The high-pressure air inlet end is arranged below the blade of the unmanned aerial vehicle, so that when the blade of the unmanned aerial vehicle works, the high-pressure area below can guarantee sufficient air to enter the high-pressure air inlet end, the fuel cell is stably supplied with air through the air inlet end, and the working environment of high-altitude or high-elevation air areas is adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to aerial work equipment, in particular to a hydrogen fuel cell unmanned aerial vehicle for the field of electric power. BACKGROUND

[0002] Compared with the traditional unmanned aerial vehicle equipped with fixed energy storage battery, the unmanned aerial vehicle equipped with hydrogen fuel cell can better adapt to longer endurance, thereby better adapting to some special occasions. In the prior art, the hydrogen fuel unmanned aerial vehicle used for electric power equipment erection and inspection, especially the unmanned aerial vehicle for high-altitude and high-altitude work, has low oxygen supply during the operation of the fuel cell due to the thin air, thereby the internal reaction of the battery is slow and the energy supply rate is low. Therefore, the unmanned aerial vehicle working in such occasions needs to be further improved in technology. SUMMARY

[0003] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0004] To solve the technical problems reflected in the background art, the present application provides the following technical solutions:

[0005] A hydrogen fuel cell unmanned aerial vehicle for the field of electric power, comprising a body, and a high-pressure air inlet end and a low-pressure air inlet end for entering air, wherein:

[0006] The body has a high-pressure area existing around itself during flight;

[0007] The high-pressure air inlet end is configured to be in air communication with the fuel cell, and the high-pressure air inlet end is located in the high-pressure area, and air is sucked into the high-pressure air inlet end in a high-pressure state;

[0008] The low-pressure air inlet end is not arranged in the high-pressure area and alternately works with the high-pressure air inlet end.

[0009] As a preferred technical solution of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the high-pressure air inlet end is arranged below the blade of the body.

[0010] As a preferred technical solution of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the low-pressure air inlet end is located in a normal pressure area and is configured to work alternately with the high-pressure air inlet end.

[0011] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the high-pressure air inlet end and the low-pressure air inlet end are configured to be openable or closable.

[0012] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the transition cavity is further provided, the high-pressure air inlet end is communicated with the fuel cell gas path through the transition cavity, the low-pressure air inlet end is arranged on the transition cavity, and the transition cavity keeps the low-pressure air inlet end closed in the high-pressure state.

[0013] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the transition cavity is movably provided with a blocking piece, and the blocking piece is moved to keep the low-pressure air inlet end closed under the action of air flow.

[0014] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the high-pressure air inlet end comprises a gas storage cover fixedly arranged below the blade, the gas storage cover is provided with a pressure relief opening through which air flow flows longitudinally, a shielding piece is arranged to block or unblock the pressure relief opening, and a conduction pipeline is arranged between the inner side of the gas storage cover and the transition cavity.

[0015] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the channel diameter of the gas storage cover gradually decreases from top to bottom, and the pressure relief opening is located at the bottom of the gas storage cover.

[0016] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the inner side of the gas storage cover is fixedly provided with a magnetic action part, the shielding piece is configured to elastically move away from the pressure relief opening, and the shielding piece is provided with a permanent magnet.

[0017] As a preferred technical scheme of the hydrogen fuel cell unmanned aerial vehicle for the field of electric power, the gas storage cover is fixedly provided with a guide rod, the shielding piece is slidably connected with the guide rod, and the shielding piece is in abutment with the inner wall of the gas storage cover when the shielding piece slides to the lowest position, so that the shielding piece covers the pressure relief opening.

[0018] The hydrogen fuel cell unmanned aerial vehicle for the field of electric power has the following beneficial effects:

[0019] (1) The high-pressure air inlet end is arranged below the blade of the unmanned aerial vehicle, so that when the blade of the unmanned aerial vehicle works, the high-pressure area below can ensure that sufficient air enters the high-pressure air inlet end, thereby stably supplying air to the fuel cell through the high-pressure air inlet end, so as to adapt to the working environment of high-altitude or high-altitude air areas.

[0020] (2) The high-pressure intake end and the low-pressure intake end are matched, so that the suitable intake mode can be selected according to the air density of the environment where the unmanned aerial vehicle is located, and the influence of the high-pressure intake end on the flight of the machine body can be reduced when necessary. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0022] Figure 1 It is a perspective view of the unmanned aerial vehicle described in the embodiment of the present application.

[0023] Figure 2 It is a top view of the structure shown in the figure. Figure 1

[0024] Figure 3 It is a schematic diagram of the intake of the high-pressure intake end described in the embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the structure of the magnetic action part described in the embodiment of the present application.

[0026] Figure 5 It is a schematic diagram of the structure of the transition cavity described in the embodiment of the present application.

[0027] Figure 6 It is a display diagram of the internal structure shown in the figure. Figure 5

[0028] It is another view of the structure shown in the figure. Figure 7 Figure 6

[0029] Reference signs:

[0030] 1, gas storage cover; 2, pressure relief port; 3, cushion block; 4, guide rod; 5, excitation coil; 6, shielding piece; 7, exchange box; 8, air inlet; 9, air outlet; 10, low-pressure intake end; 11, plugging piece. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0032] ​​​In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details set forth in this description. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application.

[0033] It should also be noted that, as used in the specification and in the claims, the article "a", "an", or "the" is intended to mean that there is at least one of the particular feature. For example, "an" implement or "a" feature of the application refers to one or more implement or one or more feature of the application.

[0034] It should also be noted that, as used in the specification and in the claims, the article "a", "an", or "the" is intended to mean that there is at least one of the particular feature. For example, "an" implement or "a" feature of the application refers to one or more implement or one or more feature of the application.

[0035] Embodiment:

[0036] With reference to Figure 1 and Figure 2 , the embodiment of the present application provides a hydrogen fuel cell unmanned aerial vehicle for the field of electric power, comprising a whole unmanned aerial vehicle (hereinafter referred to as a body), and a hydrogen fuel cell and a hydrogen storage tank are arranged in the body according to the prior art;

[0037] Further, the high-pressure air inlet is arranged below at least a plurality of blades on the body, and the structure thereof is specifically as shown in Figures 1 to 3 The high-pressure air inlet comprises a gas storage cover 1 fixedly arranged at the bottom of the blade motor, the gas storage cover 1 is conical, has an open pressure relief port 2 at the bottom, and the conical structure makes the internal passage of the gas storage cover 1 gradually narrow from top to bottom in the longitudinal direction, so that the air pressed down by the blade can be gradually extruded after gradually entering the inside of the gas storage cover 1, thereby increasing the pressure; a cushion block 3 and a guide rod 4 are fixedly arranged at the bottom position of the blade motor, the cushion block 3 is internally provided with an excitation coil 5, a shielding piece 6 is slidably arranged on the guide rod 4, the shielding piece 6 is circular in structure and is provided with a permanent magnet, and the shielding piece 6 is connected with the cushion block 3 through a spring, the shielding piece 6 is kept away from the pressure relief port 2 in the normal state through the elastic force of the spring, so that the pressure relief port 2 is in the normally open state; when the shielding piece 6 slides to the bottom, it is in contact with the inner wall of the gas storage cover 1, thereby closing the pressure relief port 2;

[0038] Further, the application also comprises a switching box 7, the inside of the switching box 7 is the transition cavity, specifically, the switching box 7 is provided with an air inlet 8 and an air outlet 9, the air inlet 8 is used for being communicated with the inside of the plurality of gas storage covers 1 through pipelines, the pipelines can be hidden in the inside of the supporting arm of the machine body, so as to prevent the appearance from being affected by the drag, the air outlet 9 is used for being communicated with the gas supply end of the hydrogen fuel cell; in addition, the switching box 7 is also provided with a low-pressure air inlet end 10, the low-pressure air inlet end 10 is an opening structure, the switching box 7 is movably provided with a blocking piece 11 inside, the blocking piece 11 is a sheet structure and is movably arranged close to the low-pressure air inlet end 10, when the transition cavity has a certain air pressure, the blocking piece 11 will be extruded to the low-pressure air inlet end 10, so that the low-pressure air inlet end 10 remains closed;

[0039] In summary, when the machine body works in the normal pressure environment, the control excitation coil 5 does not work, at this time, the air swept by the paddle can pass through the pressure relief port 2 normally when passing through the gas storage cover 1, so that the influence on the lift of the machine body can be reduced, when the fuel cell normally works, the air is provided through the low-pressure air inlet end 10, and the section of the air inlet 8 communicated to the gas storage cover 1 can also assist in providing air; when the machine body works in the high altitude or low air density environment, the control excitation coil 5 works, the repulsion effect is formed between the control excitation coil 5 and the shielding piece 6, so that the shielding piece 6 is pushed to block the pressure relief port 2, at this time, the air pressed down by the paddle is gathered in the inside of the gas storage cover 1 and forms a certain pressure, so that the air is extruded into the inside of the fuel cell through the pipeline and the transition cavity, so as to ensure the sufficient oxygen supply of the fuel cell, in the process, the airflow with a certain pressure is extruded to the low-pressure air inlet end 10 when passing through the transition cavity, so that the low-pressure air inlet end 10 remains closed, so as to prevent the extruded airflow from escaping;

[0040] Compared with the prior art, the application realizes the pressurized air intake of the fuel cell by means of the high-pressure area formed below the paddle when the paddle works, so as to ensure the air intake demand of the battery when the battery works in the low-pressure environment, so as to ensure the energy supply rate, so that the machine body can still work stably in the high altitude area.

[0041] It should be understood that, in the development of any actual implementation, numerous implementation decisions can be made, such as in any engineering or design project. Such development efforts, while possibly complex and time-consuming, would be of a routine nature of design, manufacture and production for those of ordinary skill having the benefit of this disclosure.

[0042] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A hydrogen fuel cell drone for the power sector, characterized in that: This includes the air intake body, and the high-pressure intake end and low-pressure intake end for air intake, wherein: The aircraft has a high-pressure zone around itself during flight; The high-pressure air intake is used to enter air and is configured to communicate with the fuel cell via an air passage. The high-pressure air intake is located in the high-pressure zone and is arranged below the propeller blades of the machine body. Air is drawn into the high-pressure air intake under high pressure. The low-pressure air intake end is not located in the high-pressure area and works alternately with the high-pressure air intake end. Both the low-pressure air intake end and the high-pressure air intake end are configured to be openable or closed. The low-pressure air intake end is located in the normal pressure area and is configured to alternately supply air to the fuel cell with the high-pressure air intake end. The drone also includes a transition cavity. The high-pressure air inlet is connected to the fuel cell gas path through the transition cavity. The low-pressure air inlet is disposed on the transition cavity. The transition cavity keeps the low-pressure air inlet closed under high pressure. A sealing component is movably disposed on the transition cavity. The sealing component moves to keep the low-pressure air inlet closed under the impact of airflow. The high-pressure air inlet includes an air storage cover fixedly disposed below the blade. The air storage cover has a pressure relief port through which airflow passes longitudinally. It also includes a shielding component configured to either block the pressure relief port or release the blockage of the pressure relief port. A connecting pipe is disposed between the inner side of the air storage cover and the transition cavity. The pressure relief port is located at the bottom of the gas storage hood. A magnetic action part is fixedly installed inside the gas storage hood. The shielding part is configured to be elastically away from the pressure relief port and is equipped with a permanent magnet.

2. The hydrogen fuel cell drone for the power sector according to claim 1, characterized in that: The diameter of the channel inside the gas storage hood gradually decreases from top to bottom.

3. The hydrogen fuel cell drone for the power sector according to claim 2, characterized in that: A guide rod is fixedly installed inside the gas storage hood. The shielding component slides in cooperation with the guide rod. When the shielding component slides down to its lowest point, it abuts against the inner wall of the gas storage hood to cover the pressure relief port.

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