CN209776817U

CN209776817U - Distributed unmanned aerial vehicle hydrogen fuel cell power supply system

Info

Publication number: CN209776817U
Application number: CN201920450344.0U
Authority: CN
Inventors: 王科锋
Original assignee: Zhengzhou Affirmative Technology Ltd Co
Current assignee: Zhengzhou Affirmative Technology Ltd Co
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2019-12-13
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to a distributing type unmanned aerial vehicle hydrogen fuel cell power supply system, including the fuel cell of a plurality of independent setting, fuel cell's quantity is unanimous with unmanned aerial vehicle's motor quantity, and a fuel cell is connected with a motor and for its power supply, and each fuel cell setting is in the one side that is close to the motor that corresponds the horn, and each fuel cell passes through hydrogen pipe with the hydrogen supply device that sets up in the frame and is connected. The whole dead weight greatly reduced of battery system reduces the unmanned aerial vehicle load, reduces the power consumption. The arrangement position of the fuel cell is also favorable for heat dissipation.

Description

Distributed unmanned aerial vehicle hydrogen fuel cell power supply system

Technical Field

the utility model relates to an unmanned air vehicle technique field, concretely relates to distributing type unmanned aerial vehicle hydrogen fuel cell power supply system.

Background

Unmanned aerial vehicles are mainly divided into unmanned helicopters, unmanned fixed-wing aircraft, unmanned multi-rotor aircrafts and the like according to flight platform configurations. Categorised according to the usage, unmanned aerial vehicle can be divided into for military use unmanned aerial vehicle and civilian unmanned aerial vehicle. Wherein civilian unmanned aerial vehicle can be divided into patrol/watch on unmanned aerial vehicle, agricultural unmanned aerial vehicle, meteorological unmanned aerial vehicle, exploration unmanned aerial vehicle and survey and drawing unmanned aerial vehicle etc..

Among the various types of unmanned aerial vehicles, multi-rotor unmanned aerial vehicles have gradually become the mainstream type of micro unmanned aerial vehicles or aeromodelling because of their advantages of simple operation and control, high reliability, and the like. The range of multi-rotor drones has been the soft rib of their design development. The general time of flight of the multi-rotor unmanned aerial vehicle taking the lithium battery as power is less than half an hour, beyond-the-horizon flight can not be effectively carried out, and then the flight task of professional complexity can not be completed.

With the development of fuel cell technology, especially the development of proton exchange membrane fuel cells is particularly rapid, proton exchange membrane fuel cells have begun to be applied in the field of unmanned aerial vehicles. Proton exchange membrane fuel cells are, in principle, equivalent to "reverse" devices for water electrolysis. The single cell consists of anode, cathode and proton exchange membrane. The anode is the place where hydrogen fuel is oxidized, the cathode is the place where oxidant is reduced, both electrodes contain catalyst for accelerating electrochemical reaction of the electrodes, and proton exchange membrane is used as electrolyte. The anode hydrogen gas is dissociated by the catalyst to generate hydrogen ions and electrons, and then the hydrogen ions pass through the electrolyte to the cathode, and react with the electrons reaching the cathode via an external circuit and the cathode oxygen gas by the cathode catalyst to generate water. When working, the power supply is equivalent to a direct current power supply, the anode of the power supply is the negative pole of the power supply, and the cathode of the power supply is the positive pole of the power supply.

Proton exchange membrane fuel cell has advantages such as energy density height, low noise and zero release, is applied to behind the unmanned aerial vehicle field for unmanned aerial vehicle's continuation of the journey mileage has had great promotion. A multi-rotor fuel cell plant protection unmanned aerial vehicle as disclosed in grant publication No. CN 206552271U.

Referring to fig. 1, the unmanned aerial vehicle using the fuel cell includes a frame 1, four booms 2 distributed at equal intervals, a flight lifting member 4 is provided at the end of each boom 2, and the flight lifting member 4 includes a motor 41 and a propeller 42. The fuel cell system 3 is arranged at the top of the frame of the unmanned aerial vehicle and supplies power for the controller, each motor 41, the sensors and other auxiliary equipment. The fuel cell system is also connected with a hydrogen cylinder for supplying hydrogen. Reference may further be made in particular to a fuel cell drone as disclosed in the patent application publication No. CN 107200120A.

The battery system scheme shown in fig. 1, wherein each motor shares one fuel cell, and for a large heavy-duty unmanned aerial vehicle, because the power of the motor required by the flight of the unmanned aerial vehicle is relatively high, the electric wire connecting the motor and the fuel cell naturally needs to be capable of bearing relatively high current, and the electric wire is relatively thick. The horn of large-scale unmanned aerial vehicle is than longer, and the distance of motor and fuel cell also can be than longer, all two piece at least mainlines are in order to constitute current loop between each motor and the fuel cell moreover, and electric wire self weight is big, must increase unmanned load, increases the power consumption. The wires themselves also have power losses.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a distributing type unmanned aerial vehicle hydrogen fuel cell power supply system, electric wire weight from solving current fuel cell overall arrangement, power supply mode existence is big, leads to increasing load and power consumption's problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme: distributed unmanned aerial vehicle hydrogen fuel cell power supply system, including the fuel cell of a plurality of independent setting, fuel cell's quantity is unanimous with unmanned aerial vehicle's motor quantity, and a fuel cell is connected with a motor and for its power supply, and each fuel cell setting is in the one side that is close to the motor that corresponds the horn, and each fuel cell passes through hydrogen pipe with the hydrogen supply device that sets up in the frame and is connected.

Further, the fuel cell is a proton exchange membrane fuel cell, and comprises a cell shell and a cell body arranged in the cell shell, wherein the cell shell is provided with an air inlet and an air outlet, and the hydrogen pipe is connected with a hydrogen inlet pipe on the cell body.

Furthermore, the battery shell is provided with a pipe inlet hole for the hydrogen pipe to penetrate.

Furthermore, the upper part of the battery shell is provided with a clamping structure fixed with the machine arm.

Further, the clamping structure comprises a clamp, a lower half ring of the clamp is fixed on the battery shell, and an upper half ring of the clamp is clamped on the upper side face of the periphery of the machine arm.

Furthermore, the hydrogen pipe passes through the inner cavity of the horn, and the part of the horn close to the fuel cell is provided with a pipe outlet hole for extending the hydrogen pipe.

The utility model has the advantages that: the fuel cell is independently arranged at the corresponding motor, so that the required length of the electric wire can be shortened, and the self weight of the electric wire and the electric energy loss are reduced. The length of the hydrogen pipe is increased correspondingly, and the hydrogen pipe is lighter because the hydrogen pipe is generally made of PU flexible pipe. Consequently, the whole dead weight greatly reduced of battery system reduces unmanned aerial vehicle load. The fuel cell is arranged at a position, so that the heat of the fuel cell can be dissipated by utilizing the air flow driven by the rotation of the propeller.

Drawings

Fig. 1 is a schematic diagram of a prior art quad-rotor drone using fuel cells;

fig. 2 is a schematic diagram of one of the units of the distributed unmanned aerial vehicle hydrogen fuel cell power supply system of the present invention.

The names corresponding to the respective labels in fig. 2: 5. propeller, 6, motor, 7, electric wire, 8, fuel cell, 9, horn, 10, hydrogen pipe, 11, frame, 12, hydrogen tank, 81, battery housing, 82, air inlet, 83, clamp.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

Embodiment 1 of the utility model:

the various objects of the embodiments are illustrated with scale, dimensions, amounts of distortion or displacement suitable for illustration, rather than being drawn to scale as actual components. The battery system in this embodiment to use on four rotor unmanned aerial vehicle as the example, expresses technical concept, and main innovation point lies in fuel cell's overall arrangement, independent power supply, as for the detail structure of spare part and concrete and the cooperation mode of unmanned aerial vehicle organism not the key point of protection.

Distributed unmanned aerial vehicle hydrogen fuel cell power supply system, including four fuel cell 8 that independently set up, the quantity of fuel cell 8 is unanimous with unmanned aerial vehicle's 6 quantity of motor, and this motor 6 indicates that the horn 9 tip of installing at unmanned aerial vehicle is used for driving screw 5. As shown in fig. 2, a unit in the battery system is shown, and a horn 9 is taken as an example, and the horn is shown in a broken schematic view. A fuel cell 8 is connected with a motor 6 through an electric wire 7 and the motor supplies power, each fuel cell is arranged on one side of the corresponding machine arm close to the motor, each fuel cell is connected with a hydrogen supply device arranged on a machine frame 11 through a hydrogen pipe 10, and the hydrogen supply device adopts a hydrogen tank 12.

The fuel cell sets up the motor one side that is close to of horn, and the screw can also play the radiating effect to fuel cell at the during operation.

The fuel cell is a proton exchange membrane fuel cell, and includes a cell housing 81 and a cell body, i.e., a stack, disposed in the cell housing. The proton exchange membrane fuel cell has positive and negative poles connected to the motor on the same arm via wires. The electric wire 7 is arranged in the machine arm 9, and the machine arm is provided with a corresponding wire hole. The horn is a collapsible cavity structure, which belongs to the prior art. The location of the wire holes is changed relative to the prior art because in this embodiment the motor is located closer to the corresponding fuel cell and the required wire length is shorter.

The proton exchange membrane fuel cell needs air (providing oxygen) and hydrogen for working, the cell shell 81 is provided with an air inlet 82 and an air outlet, the air inlet 82 and the air outlet are arranged oppositely, air in the atmospheric environment can provide oxygen required by reaction for the proton exchange membrane in the electric pile through circulation of the air inlet 82 and the air outlet, and no separate oxygen supply device is additionally arranged.

The hydrogen pipe is connected with a hydrogen inlet pipe on the cell body, and hydrogen in the hydrogen tank is conveyed to the cell body to provide hydrogen for the reaction of the galvanic pile. The battery shell is provided with a pipe inlet hole for the hydrogen pipe to penetrate through, or the pipe inlet hole is not arranged, and the hydrogen pipe is inserted from an air inlet or an air outlet of the battery shell. The hydrogen pipe passes through the inner cavity of the horn, and the part of the horn close to the fuel cell is provided with a pipe outlet hole for extending the hydrogen pipe.

The hydrogen inlet pipe on the cell body distributes hydrogen to the hydrogen flow field of each layer of polar plate, and contacts with the proton exchange membrane, which belongs to the prior art, and for this, the content of the polymer electrolyte fuel cell light electric pile and the manufacturing method thereof disclosed by the invention patent with the publication number of CN104157895B can be referred.

The upper part of the battery shell is provided with a clamping structure fixed with the machine arm. The clamping structure comprises a clamp 83, the lower half ring of the clamp is fixed on the battery shell 81, the upper half ring of the clamp 83 is clamped on the upper side face of the periphery of the machine arm 9, and the upper half ring and the lower half ring are fastened through screws to realize the holding fixation of the clamp and the machine arm. The clamp principle belongs to the prior art, and in this embodiment, only an example of how to install the fuel cell is taken, and there are many ways of fixing the fuel cell to the horn, for example, an angle plate may be further provided, the horn is provided with a bolt through hole, two plates of the angle plate are respectively provided with a bolt through hole, one plate of the angle plate is fixed on the cell shell through a bolt, and the other plate is fixed with the horn through a bolt. Fuel cell's fixed mode also is not the utility model discloses a key, the utility model discloses a main innovation point is to set up a plurality of fuel cell, and sets up near the motor that corresponds, fuel cell and motor one-to-one, independent power supply.

Through the utility model discloses carry out the re-layout design back to fuel cell, have following characteristics: (1) shorten required electric wire length, certainly can increase the length of hydrogen pipe, nevertheless the hydrogen pipe generally adopts the PU hose, for the electric wire length who shortens, battery system dead weight greatly reduced reduces, reduces unmanned aerial vehicle load. (2) The wires become shorter and the losses are also reduced. (3) The fuel cell is arranged at a position which is beneficial to heat dissipation. (4) Removing the fuel cell saves space on the housing portion. (5) Reliability is increased and leakage is reduced.

For other devices needing power supply, such as a sensor, a corresponding lead can be led out from a certain fuel cell to supply power to the fuel cell. Moreover, the power of other devices such as the sensor is far less than that of the motor.

The utility model discloses a distributing type unmanned aerial vehicle hydrogen fuel cell power supply system mainly is used in the civilian unmanned aerial vehicle of heavy load, like laxative unmanned aerial vehicle etc..

The utility model discloses distributed unmanned aerial vehicle hydrogen fuel cell power supply system's embodiment 2:

The utility model discloses a distributed unmanned aerial vehicle hydrogen fuel cell power supply system also can use on unmanned aerial vehicles such as six rotor unmanned aerial vehicle, and the principle is the same with above-mentioned embodiment 1. And arranging corresponding fuel cells according to the number and the positions of the machine arms and the motors. To six rotor unmanned aerial vehicles, fuel cell need set up six, sets up the tip that is close to the motor of each horn respectively.

Claims

1. Distributed unmanned aerial vehicle hydrogen fuel cell power supply system, its characterized in that: the fuel cell who includes the independent setting of a plurality of, fuel cell's quantity is unanimous with unmanned aerial vehicle's motor quantity, and a fuel cell is connected with a motor and supplies power for it, and each fuel cell setting is in the one side that is close to the motor that corresponds the horn, and each fuel cell passes through hydrogen pipe with the hydrogen supply device who sets up in the frame and is connected.

2. The distributed unmanned aerial vehicle hydrogen fuel cell power supply system of claim 1, wherein: the fuel cell is a proton exchange membrane fuel cell and comprises a cell shell and a cell body arranged in the cell shell, wherein the cell shell is provided with an air inlet and an air outlet, and the hydrogen pipe is connected with a hydrogen inlet pipe on the cell body.

3. The distributed unmanned aerial vehicle hydrogen fuel cell power supply system of claim 2, wherein: the battery shell is provided with a pipe inlet hole for the hydrogen pipe to penetrate.

4. The distributed unmanned aerial vehicle hydrogen fuel cell power supply system of claim 2, wherein: and the upper part of the battery shell is provided with a clamping structure fixed with the machine arm.

5. The distributed unmanned aerial vehicle hydrogen fuel cell power supply system of claim 4, wherein: the clamping structure comprises a clamp, a lower semi-ring of the clamp is fixed on the battery shell, and an upper semi-ring of the clamp is clamped on the peripheral upper side face of the machine arm.

6. The distributed unmanned aerial vehicle hydrogen fuel cell power supply system of claim 1, wherein: the hydrogen pipe passes through the inner cavity of the horn, and the part of the horn close to the fuel cell is provided with a pipe outlet hole for extending the hydrogen pipe.