Range extender and unmanned aerial vehicle

Abstract

The utility model relates to the technical field of unmanned aerial vehicle range extending, and discloses a range extender and an unmanned aerial vehicle, the range extender comprises a shell fixedly connected with an unmanned aerial vehicle body, and the shell is provided with an air inlet and an air outlet; the generator is arranged in the shell and is electrically connected with the lithium battery; the engine is arranged in the shell; the transmission mechanism is arranged between the engine and the generator, and the engine drives a rotating shaft of the generator to rotate through the transmission mechanism so that the generator can charge the lithium battery. According to the range extender, the rotating shaft of the generator is driven by the engine to rotate so that the generator can generate electricity, the generator is electrically connected with the lithium battery of the unmanned aerial vehicle body so that the lithium battery can be charged, and the endurance time of the unmanned aerial vehicle can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of range extension for unmanned aerial vehicles (UAVs), and in particular to a range extender and a UAV. Background Art

[0002] In recent years, the drone market has seen explosive growth and has been widely used in agriculture, exploration, photography, border patrol and other fields. Pure electric drones are powered by lithium batteries, which provide the energy required for flight and other functions. Therefore, the drone's battery life is limited by the energy density of lithium batteries, resulting in a shorter drone battery life. Utility Model Content

[0003] In view of this, the present invention provides a range extender and a UAV to solve the problem of short flight time of UAVs.

[0004] In a first aspect, the present invention provides a range extender, which is used to be fixedly connected to a drone body and electrically connected to a lithium battery inside the drone body to supply power to the lithium battery. The range extender includes:

[0005] The housing is fixedly connected to the drone body and has an air inlet and an air outlet;

[0006] A generator is disposed inside the housing and electrically connected to the lithium battery;

[0007] an engine, disposed inside the housing;

[0008] The transmission mechanism is arranged between the engine and the generator. The engine drives the generator's rotating shaft to rotate through the transmission mechanism, so that the generator charges the lithium battery.

[0009] Beneficial effect: The generator shaft is driven by the engine to rotate, so that the generator generates electricity, and the generator is electrically connected to the lithium battery of the drone body to charge the lithium battery, thereby increasing the flight time of the drone.

[0010] In an optional embodiment, a partition is fixedly connected to the interior of the shell, which divides the internal cavity of the shell into a first cavity and a second cavity. The air inlet is opened on the shell corresponding to the first cavity, and the air outlet is opened on the shell corresponding to the second cavity; a porous plate connecting the first cavity and the second cavity is provided on the partition, and the porous plate is suitable for slowing down the air flow speed from the first cavity into the second cavity, and the engine is located in the second cavity.

[0011] Beneficial effect: air enters the first cavity through the air inlet and enters the second cavity through the porous plate. The porous plate has a rectifying effect on the airflow, so that the airflow flows slowly and evenly from the first cavity to the second cavity.

[0012] In an optional embodiment, a first baffle and a first servo are provided near the air inlet of the shell, and the first servo drives the first baffle to rotate relative to the air inlet to change the air intake flow of the air inlet; a second baffle and a second servo are provided near the air outlet of the shell, and the second servo drives the second baffle to rotate relative to the air outlet to change the air intake flow of the air outlet.

[0013] Beneficial effects: by arranging a first baffle and a first steering gear at the air inlet, the air intake flow of the air inlet can be adjusted as needed; and by arranging a second baffle and a second steering gear at the air outlet, the air outlet flow of the air outlet can be adjusted as needed.

[0014] In an optional embodiment, the engine includes a heating device, a cylinder and a first rotating wheel. The heating device is located below the cylinder to heat the cylinder; the piston rod of the cylinder is connected to the first rotating wheel to drive the first rotating wheel to rotate, and the first rotating wheel drives the generator shaft to rotate through the transmission mechanism to enable the generator to generate electricity.

[0015] In an optional embodiment, the heating device includes a fuel bottle and an igniter. A fuel outlet is provided on the upper end surface of the fuel bottle. The igniter is fixedly connected to the upper end surface of the fuel bottle near the fuel outlet to be suitable for igniting the fuel ejected from the fuel outlet.

[0016] In an optional embodiment, the heating device further comprises a porous cover shell, which is arranged on the upper end surface of the fuel bottle to cover the combustion area of the fuel.

[0017] Beneficial effect: By arranging a porous cover to cover the combustion area of the fuel, the gas can be further rectified through the holes of the porous cover and the gas can be heated, which is conducive to more complete combustion of the fuel.

[0018] In an optional embodiment, the range extender further includes a control unit and a pulse device disposed in the housing, the control unit being electrically connected to the pulse device, and the pulse device being electrically connected to the igniter, so that the control unit controls the igniter through the pulse device to ignite the fuel.

[0019] In an optional embodiment, at least one heat dissipation plate is fixedly connected to an outer wall of the shell away from the drone body.

[0020] Beneficial effect: By arranging a heat sink on the outer wall of the shell, the range extender can be cooled.

[0021] In an optional embodiment, at least one heat insulation board is fixedly connected to the outer wall of the shell close to the drone body.

[0022] Beneficial effect: By setting a heat insulation plate between the shell and the drone body, it is easy to prevent the high temperature of the range extender from affecting the drone body.

[0023] In a second aspect, the present invention further provides a drone, comprising:

[0024] The drone itself;

[0025] The range extender mentioned above is fixedly connected to the bottom of the drone body.

[0026] Because the UAV includes a range extender, it has the same effects as the range extender, and its beneficial effects are not repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is an overall schematic diagram of the UAV of the utility model;

[0029] Figure 2 It is a cross-sectional schematic diagram of the range extender of the present utility model;

[0030] Figure 3 This is an axonometric cross-sectional diagram of the range extender of the present utility model;

[0031] Figure 4 This is a bottom schematic diagram of the range extender of the present utility model;

[0032] Figure 5 Schematic diagram of the engine of this utility model Figure 1 ;

[0033] Figure 6 Schematic diagram of the engine of this utility model Figure 2 ;

[0034] Figure 7 This is a schematic diagram of the heater of the present invention.

[0035] Description of reference numerals:

[0036] 1. Shell; 101. First cavity; 102. Second cavity; 2. Partition; 3. Engine; 31. Heating device; 311. Fuel bottle; 312. Ignitor; 32. Cylinder; 321. Piston; 33. Piston rod; 34. Transmission rod assembly; 35. First rotating wheel; 4. First baffle; 5. First servo; 6. Porous plate; 7. Control unit; 8. Pulse device; 9. Generator; 10. Second servo; 11. Second baffle; 12. Transmission mechanism; 13. Air inlet; 14. Air outlet; 15. Fuel filling port; 16. Porous cover; 17. Fuel outlet; 18. Heat sink; 19. UAV body; 20. Lithium battery; 21. Second rotating wheel; 22. Transmission belt; 23. Rotating shaft. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are 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 those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] The following combination Figures 1 to 7, describing the embodiments of the present utility model.

[0042] According to an embodiment of the present invention, on the one hand, a range extender is provided, which is fixedly connected to a drone body 19 and electrically connected to a lithium battery 20 inside the drone body 19 to supply power to the lithium battery 20. The range extender includes:

[0043] The housing 1 is fixedly connected to the drone body 19 and is provided with an air inlet 13 and an air outlet 14;

[0044] The generator 9 is disposed inside the housing 1 and is electrically connected to the lithium battery 20;

[0045] The engine 3 is arranged inside the housing 1;

[0046] The transmission mechanism 12 is provided between the engine 3 and the generator 9 . The engine 3 drives the rotating shaft 23 of the generator 9 to rotate through the transmission mechanism 12 , so that the generator 9 charges the lithium battery 20 .

[0047] The range extender provided in this embodiment drives the rotating shaft 23 of the generator 9 to rotate through the engine 3, so that the generator 9 generates electricity, and is electrically connected to the lithium battery 20 of the drone body 19 through the generator 9, thereby charging the lithium battery 20 and thus improving the flight time of the drone.

[0048] Specifically, the energy density of chemical fuel is much higher than that of lithium battery 20. The engine 3 uses fossil fuel as energy to drive the generator 9 to generate electricity. The fossil fuel burns to drive the engine 3 to work, and the engine 3 drives the rotating shaft of the generator 9 to rotate through the transmission mechanism 12, so that the generator 9 generates electricity and is electrically connected to the lithium battery 20 through the generator 9, so that the electricity generated by the generator 9 can be used to charge the lithium battery 20, thereby improving the endurance of the drone.

[0049] At least one air inlet 13 and at least one air outlet 14 are provided on the shell 1 to facilitate air circulation inside the shell 1. Since the combustion of fossil fuel causes the air volume inside the shell 1 to increase steadily, the high-temperature gas is discharged through the air outlet 14, which is beneficial to cooling the inside of the shell 1 and achieving air pressure balance, thereby ensuring the normal operation of the engine 3.

[0050] In some embodiments, combined Figures 1 to 7As shown, a partition 2 is fixedly connected to the inside of the shell 1, and the partition 2 divides the internal cavity of the shell 1 into a first cavity 101 and a second cavity 102. The air inlet 13 is opened on the shell 1 corresponding to the first cavity 101, and the air outlet 14 is opened on the shell 1 corresponding to the second cavity 102; a porous plate 6 is provided on the partition 2 to connect the first cavity 101 and the second cavity 102, and the porous plate 6 is suitable for slowing down the air flow speed from the first cavity 101 to the second cavity 102, and the engine 3 is located in the second cavity 102.

[0051] In the range extender provided in this embodiment, air enters the first cavity 101 through the air inlet 13 and enters the second cavity 102 through the porous plate 6. The porous plate 6 has a rectifying effect on the airflow, so that the airflow flows slowly and evenly from the first cavity 101 to the second cavity 102.

[0052] Specifically, the partition 2 is arranged in the vertical direction to separate the internal cavity of the shell 1 into a first cavity 101 and a second cavity 102 in the horizontal direction, and along the flight direction of the drone, the first cavity 101 is located in front of the second cavity 102, and the engine 3 and the generator 9 are both located in the second cavity 102. The partition 2 is provided with at least one through hole, and a porous plate 6 is fixedly connected at the through hole. The size of the porous plate 6 is adapted to the size of the through hole, and the porous plate 6 is provided with a plurality of through holes connecting the first cavity 101 and the second cavity 102. External gas enters the first cavity 101 through the air inlet 13 and enters the second cavity 102 through the through holes. The gas in the second cavity 102 is suitable for being discharged from the second cavity 102 through the air outlet 14, thereby ensuring the air pressure balance inside the second cavity 102. By arranging the porous plate 6 at the through hole, the wind speed is slowed down and the gas is allowed to pass evenly. Preferably, the porous plate 6 is a ceramic porous plate.

[0053] In some embodiments, combined Figures 1 to 7 As shown, the housing 1 is provided with a first baffle 4 and a first servo 5 near the air inlet 13. The first servo 5 drives the first baffle 4 to rotate relative to the air inlet 13 to change the air intake flow of the air inlet 13; the housing 1 is provided with a second baffle 11 and a second servo 10 near the air outlet 14. The second servo 10 drives the second baffle 11 to rotate relative to the air outlet 14 to change the air intake flow of the air outlet 14.

[0054] The range extender provided in this embodiment provides a first baffle 4 and a first servo 5 at the air inlet 13 to adjust the air intake flow rate of the air inlet 13 as needed; and provides a second baffle 11 and a second servo 10 at the air outlet 14 to adjust the air outlet flow rate of the air outlet 14 as needed.

[0055] Specifically, the first baffle 4 is hinged to the wall of the housing 1, and the hinge axis of the first baffle 4 and the housing 1 can be perpendicular to the wall, or can be as shown in FIG. Figure 2 As shown, parallel to the wall, the first servo 5 is fixedly connected to the housing 1, and the hinge axis of the first baffle 4 and the housing 1 is coaxially fixedly connected to the rotation axis of the first servo 5, so that the first servo 5 drives the first baffle 4 to rotate, so that the first baffle 4 has a first state of covering the air inlet 13 to block the flow of gas at the air inlet 13, and a second state of at least partially exposing the air inlet 13 to allow the flow of gas at the air inlet 13. When the first baffle 4 is in the second state, the rotation angle of the first baffle 4 is adjusted by the first servo 5 to adjust the gas flow at the air inlet 13.

[0056] The second baffle 11 is hinged to the wall of the housing 1. The hinge axis of the second baffle 11 and the housing 1 can be perpendicular to the wall, or can be as shown in FIG. Figure 2 As shown, parallel to the wall, the second servo 10 is fixedly connected to the housing 1, and the hinge axis of the second baffle 11 and the housing 1 is coaxially fixedly connected to the rotation axis of the second servo 10, so that the second servo 10 drives the second baffle 11 to rotate, so that the second baffle 11 has a first state of covering the air outlet 14 to block the flow of gas at the air outlet 14, and a second state of at least partially exposing the air outlet 14 to allow the flow of gas at the air outlet 14. When the second baffle 11 is in the second state, the rotation angle of the second baffle 11 is adjusted by the second servo 10 to adjust the gas flow at the air outlet 14.

[0057] In some embodiments, combined Figures 1 to 7 As shown, the engine 3 includes a heating device 31, a cylinder 32 and a first rotating wheel 35. The heating device 31 is located below the cylinder 32 to heat the cylinder 32; the piston rod 33 of the cylinder 32 is connected to the first rotating wheel 35 to drive the first rotating wheel 35 to rotate, and the first rotating wheel 35 drives the rotating shaft of the generator 9 to rotate through the transmission mechanism 12, so that the generator 9 generates electricity.

[0058] Specifically, the engine 3 is constructed as a Stirling engine, and the cylinder 32 is heated by the heating device 31 so that the piston 321 inside the cylinder 32 drives the piston rod 33 fixedly connected to it to perform linear reciprocating motion. The first rotating wheel 35 is rotatably arranged inside the shell 1, and the piston rod 33 is connected to the first rotating wheel 35 through the transmission rod assembly 34 to drive the first rotating wheel 35 to rotate around its axis. It should be noted that the Stirling engine is an existing technology, so its working principle and specific structural form are not described in detail.

[0059] The transmission mechanism 12 includes a second rotating wheel 21 and a transmission belt 22. The second rotating wheel 21 is coaxially fixedly connected to the rotating shaft 23 of the generator 9. The transmission belt 22 is sleeved on the first rotating wheel 35 and the second rotating wheel 21, so that the first rotating wheel 35 drives the second rotating wheel 21 to rotate through the transmission belt 22, thereby driving the rotating shaft 23 of the generator 9 to rotate, so that the generator 9 generates electricity.

[0060] In some embodiments, combined Figures 1 to 7 As shown, the heating device 31 includes a fuel bottle 311 and an igniter 312. The upper end surface of the fuel bottle 311 is provided with a fuel outlet 17. The igniter 312 is fixedly connected to the upper end surface of the fuel bottle 311 near the fuel outlet 17 to be suitable for igniting the fuel ejected from the fuel outlet 17.

[0061] Specifically, the fuel bottle 311 stores gaseous fuel or liquid fuel, which is sprayed out at the fuel outlet 17 and ignited by the igniter 312. As a feasible embodiment, the fuel bottle 311 stores compressed gaseous fuel, such as butane, which is ignited by the igniter 312 after being sprayed out and burns in the vicinity above the fuel outlet 17 to heat the cylinder 32; as an additional embodiment, the fuel bottle 311 stores liquid fuel, such as kerosene or methanol, and a fuel pump is provided in the fuel bottle 311, and an atomizer is provided at the fuel outlet 17. The fuel pump pumps the liquid fuel into the atomizer at the fuel outlet 17, and the liquid fuel is atomized and sprayed out and ignited by the igniter 312 to burn in the vicinity above the fuel outlet 17 to heat the cylinder 32.

[0062] The fuel bottle 311 is fixedly connected to the bottom wall or side wall of the shell 1, and the bottle body of the fuel bottle 311 and the bottom wall of the shell 1 are correspondingly provided with a fuel replenishing port 15, so that the fuel in the fuel bottle 311 can be replenished directly from the outside of the intensifier, which is conducive to enhancing the convenience of fuel replenishment.

[0063] In some embodiments, combined Figures 1 to 7 As shown, the heating device 31 further includes a porous cover 16, which is arranged on the upper end surface of the fuel bottle 311 to cover the combustion area of the fuel.

[0064] The range extender provided in this embodiment is provided with a porous cover 16 to cover the combustion area of the fuel, so that the gas can be further rectified and heated through the holes of the porous cover 16, which is conducive to more complete combustion of the fuel.

[0065] Specifically, the top of the fuel bottle 311 is at a certain distance from the bottom of the cylinder 32. The porous cover 16 is fixedly connected to the upper end face of the fuel bottle 311, and a hollow cavity is formed between the porous cover 16 and the upper end face of the fuel bottle 311. The igniter 312 is located in the hollow cavity, so as to be suitable for burning the fuel in the hollow cavity. The porous cover 16 is provided with a plurality of through holes, so as to be suitable for the gas in the second cavity 102 to slowly and evenly enter the hollow cavity, which is conducive to stable combustion. When the fuel burns, the porous cover 16 can be heated so that the porous cover 16 preheats the gas entering the hollow cavity from the second cavity 102, which is conducive to the full combustion of the fuel. In addition, by arranging the porous cover 16, the heat generated by the combustion can be retained within the above-mentioned distance to the greatest extent, thereby preventing a large amount of heat energy loss and helping to increase power generation. Preferably, the porous cover 16 is a ceramic porous cover, and the position of the porous plate 6 on the partition 2 corresponds to the position of the porous cover 16 .

[0066] In some embodiments, combined Figures 1 to 7 As shown, the range extender also includes a control unit 7 and a pulse device 8 arranged in the housing 1. The control unit 7 is electrically connected to the pulse device 8, and the pulse device 8 is electrically connected to the igniter 312, so that the control unit 7 controls the igniter 312 to ignite the fuel through the pulse device 8.

[0067] Specifically, control unit 7 is also electrically connected to first servo 5 and second servo 10 to control first baffle 4 and second baffle 11, thereby controlling the opening or closing of air outlet 14 and air inlet 13. After the drone takes off, control unit 7 controls the valve of fuel outlet 17 to open, allowing the fuel in fuel bottle 311 to be sprayed into the hollow cavity. It also controls ignition of igniter 312 via pulse device 8 to ignite the fuel in the hollow cavity, thereby activating engine 3. Simultaneously, control unit 7 controls the opening of air outlet 14 and air inlet 13 via first baffle 4 and second baffle 11 to ensure the normal operation of engine 3. Control unit 7 is independent of the electrical system of drone body 19, which helps enhance the adaptability of the range extender to different models of drones.

[0068] In some embodiments, combined Figures 1 to 7 As shown, at least one heat dissipation plate 18 is fixedly connected to the outer wall of the shell 1 away from the drone body 19.

[0069] The drone provided in this embodiment provides a heat sink 18 on the outer wall of the housing 1 to cool the range extender.

[0070] Specifically, heat sink 18 is in direct contact with high-speed external air, allowing heat to be carried away by the air. Preferably, the surface of heat sink 18 is corrugated to increase the contact area between heat sink 18 and the external air, thereby improving heat dissipation efficiency. When heat sink 18 is fixedly attached to the outer wall of housing 1, where fuel refill port 15 is located, a through hole is formed in heat sink 18 corresponding to the location of fuel refill port 15, thereby providing clearance for fuel refill port 15.

[0071] In some embodiments, combined Figures 1 to 7 As shown, at least one heat insulation board is fixedly connected to the outer wall of the shell 1 close to the drone body 19.

[0072] The drone provided in this embodiment provides a heat insulation plate between the shell 1 and the drone body 19 to prevent the high temperature of the range extender from affecting the drone body.

[0073] Specifically, since the temperature inside the housing 1 increases due to the combustion of fuel, a heat shield is provided to prevent the heat generated by the combustion from affecting the drone.

[0074] According to an embodiment of the present invention, on the other hand, there is also provided a drone, comprising:

[0075] UAV body 19;

[0076] The range extender mentioned above is fixedly connected to the bottom of the drone body 19.

[0077] Specifically, thermal insulation panels are fixedly attached to the outer sides of the range extender's top and peripheral walls, while a heat sink 18 is fixedly attached to the outer side of the range extender's bottom wall. The range extender's internal generator 9 is electrically connected to the lithium battery 20 within the drone's main body 19, facilitating charging and thereby increasing the drone's endurance. Furthermore, the range extender's connection to the drone's main body 19 preserves the drone's original electrical system and design, making it compatible with a wide range of drone models and enhancing its versatility.

[0078] Obviously, the above embodiments are merely examples for the purpose of clarity of explanation and are not intended to limit the implementation methods. Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present invention.

Claims

1. A range extender, characterized in that: The range extender is used for being fixedly connected to the drone body (19) and electrically connected to the lithium battery (20) inside the drone body (19) to supply power to the lithium battery (20). The range extender includes: A shell (1) is fixedly connected to the drone body (19), and an air inlet (13) and an air outlet (14) are provided on the shell (1); A generator (9) is disposed inside the housing (1) and electrically connected to the lithium battery (20); An engine (3) is arranged inside the housing (1); a transmission mechanism (12) disposed between the engine (3) and the generator (9), wherein the engine (3) drives the rotating shaft (23) of the generator (9) to rotate through the transmission mechanism (12), so that the generator (9) charges the lithium battery (20); A partition (2) is fixedly connected to the interior of the shell (1), and the partition (2) divides the internal cavity of the shell (1) into a first cavity (101) and a second cavity (102); the air inlet (13) is opened on the shell (1) corresponding to the first cavity (101), and the air outlet (14) is opened on the shell (1) corresponding to the second cavity (102); a porous plate (6) is provided on the partition (2) for connecting the first cavity (101) and the second cavity (102), and the porous plate (6) is suitable for slowing down the air flow speed from the first cavity (101) to the second cavity (102), and the engine (3) is located in the second cavity (102).

2. The range extender according to claim 1, characterized in that: The housing (1) is provided with a first baffle (4) and a first steering gear (5) near the air inlet (13), and the first steering gear (5) drives the first baffle (4) to rotate relative to the air inlet (13) to change the air intake flow rate of the air inlet (13); the housing (1) is provided with a second baffle (11) and a second steering gear (10) near the air outlet (14), and the second steering gear (10) drives the second baffle (11) to rotate relative to the air outlet (14) to change the air outlet flow rate of the air outlet (14).

3. The range extender according to claim 1, characterized in that: The engine (3) comprises a heating device (31), a cylinder (32) and a first rotating wheel (35). The heating device (31) is located below the cylinder (32) to heat the cylinder (32). The piston rod (33) of the cylinder (32) is connected to the first rotating wheel (35) in a transmission manner to drive the first rotating wheel (35) to rotate. The first rotating wheel (35) drives the rotating shaft of the generator (9) to rotate through the transmission mechanism (12), so that the generator (9) generates electricity.

4. The range extender according to claim 3, characterized in that: The heating device (31) comprises a fuel bottle (311) and an igniter (312). The upper end surface of the fuel bottle (311) is provided with a fuel outlet (17). The igniter (312) is fixedly connected to a position of the upper end surface of the fuel bottle (311) near the fuel outlet (17) to ignite the fuel ejected from the fuel outlet (17).

5. The range extender according to claim 4, characterized in that: The heating device (31) further comprises a porous cover (16), wherein the porous cover (16) is arranged on the fuel bottle (311) to cover the combustion area of the fuel.

6. The range extender according to claim 4, characterized in that: The range extender further comprises a control unit (7) and a pulse device (8) arranged in the housing (1); the control unit (7) is electrically connected to the pulse device (8), and the pulse device (8) is electrically connected to the igniter (312), so that the control unit (7) controls the igniter (312) to ignite the fuel through the pulse device (8).

7. The range extender according to claim 1, characterized in that: At least one heat dissipation plate (18) is fixedly connected to an outer wall of the shell (1) away from the drone body (19).

8. The range extender according to claim 1, characterized in that: At least one heat insulation board is fixedly connected to the outer wall of the shell (1) close to the drone body (19).

9. A drone, characterized in that: include: UAV body (19); The range extender according to any one of claims 1 to 8, wherein the range extender is fixedly connected to the bottom of the drone body (19).

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