Pure-electricity and oil-electricity hybrid unmanned aerial vehicle

Abstract

According to the pure-electricity and oil-electricity hybrid unmanned aerial vehicle, a circuit plugging part and a vehicle body jaw are arranged in a rack, an oil-electricity hybrid power unit or an externally-hung battery module can be installed in the rack to be matched with the circuit plugging part, and a range extender, a rectifying system, an oil tank, a battery and a circuit are combined into the integrated oil-electricity hybrid power unit; the oil-electricity hybrid power unit module can be detachably connected with the rack of the unmanned aerial vehicle, and the oil-electricity hybrid power unit can be simply and horizontally inserted into a fuselage jaw of the rack to be installed and fixed and can be simply detached and taken out when not in use. When an external battery module is replaced to replace the oil-electricity hybrid power unit for use, simplicity and convenience can be achieved, pure battery use or oil-electricity hybrid power unit installation use can be better achieved, multiple choices can be achieved, and the two power units can be switched, installed and used according to actual use requirements.

Description

Technical Field

[0001] The present invention relates to the field of unmanned aerial vehicles (UAVs), and in particular to a pure electric or hybrid electric UAV. Background Art

[0002] Drones are common aircraft in our daily life. They are mainly divided into pure electric drones and hybrid drones. To ensure the endurance, manufacturers can install range extenders on drones to generate electricity and make up for the lack of battery energy density. Hybrid drones are usually equipped with range extenders to provide electricity as power unit modules. Existing hybrid drone range extenders mainly include engines, generators, cooling systems and rectifier systems. The cooling system mainly includes air cooling or water cooling. In order to ensure the compactness of the overall structure formed by the combination of various components and the convenience of installation, it is necessary to set up a mounting frame, and assemble the engine, generator, cooling system and rectifier system on the mounting frame in a suspended or mounted manner. In the subsequent installation, you only need to connect and fix the mounting frame to the drone frame, and then connect other control modules to complete the installation. Existing UAV range extenders usually have a split connection between the range extender and equipment such as fuel tanks and batteries, and do not have modular functions. The range extender is hung on the UAV frame or fixed under the frame's connecting plate, and then connected to the fuel tank in the frame through an oil pipe, and then connected to the battery module, rotor motor and other equipment through wires. As a result, there are many lines distributed in the UAV frame that are connected to components independently installed at different positions on the frame. The installation of the range extender must be used in conjunction with accessories in other parts of the frame, and it cannot be disassembled separately or the disassembly is troublesome. The disassembly of the range extender will cause the frame to be too large and affect the structural strength of the frame. However, during use, when the drone is used with short flight and heavy load, the battery capacity is sufficient, that is, there is no need to start the range extender for power supply. The range extender installed in the rack will become a burden, and the fuel tank, range extender and rectifier system and other equipment will increase the weight of the drone. If the drone range extender module can be directly and simply disassembled and replaced with batteries, the weight of the drone body can be greatly reduced when it is used with short flight and heavy load, and it is more convenient to use. When the range extender module is needed, the battery can be directly disassembled and removed, and the range extender module can be installed for use, that is, it can be used with pure battery or with the range extender module installed, which will make the use of the drone more flexible and more choices. Therefore, if the range extender power unit of the drone can be modularly designed, so that the connection between the range extender module and the drone can be simply disassembled and installed, it will become simpler and more convenient when replacing the pure battery module, and it can also better realize the use of pure battery or install the range extender module. Multiple options can be used, and it can be converted and installed according to actual use needs, but it will cause the rack size to be too large and affect the structural strength of the rack. Summary of the invention

[0003] In order to solve the problem that the connection between the range extender of the above-mentioned existing drones and equipment such as fuel tanks and batteries is split and does not have the function of overall modularization, resulting in a large number of messy wires distributed in the drone frame and connected to components independently installed at different positions of the frame, the installation of the range extender must be coordinated with the accessories in other parts of the frame, and the deficiency of pure battery module cannot be easily disassembled and replaced. The present invention provides a pure electric and oil-electric hybrid UAV. By arranging a circuit plug-in component and a fuselage jaw in a frame, an oil-electric hybrid power unit or an external battery module can be installed in the frame to cooperate with the circuit plug-in component, and a range extender, a rectifier system, a fuel tank, a battery and a circuit are combined into an integrated oil-electric hybrid power unit, so that the oil-electric hybrid power unit module can be detachably connected to the frame of the UAV, and the oil-electric hybrid power unit can be simply inserted into the fuselage jaw of the frame in a horizontal direction for installation and fixation, and can be simply disassembled and taken out when not in use, and then the external battery module can be replaced to replace the oil-electric hybrid power unit for use, which will become simpler and more convenient, and will not cause the frame size to be too large and affect the structural strength of the frame, and can also better realize the use of pure batteries or the installation of oil-electric hybrid power units for use, with multiple options, so that the two power units can be converted and installed according to actual use needs.

[0004] The present invention adopts the following technical scheme: a pure electric and hybrid oil-electric UAV, wherein a circuit plug-in component is arranged in the frame, and an oil-electric hybrid power unit or an external battery module can be installed in the frame to cooperate with the circuit plug-in component, the frame is provided with a fuselage jaw and a C-shaped jaw arranged on a C-shaped bracket of the oil-electric hybrid power unit to be clamped and connected to each other, a circuit plug-in component is arranged in the fuselage jaw to be connected to the battery plug-in port of the oil-electric hybrid power unit, and the circuit plug-in component is connected to the line of a flight control module. After the oil-electric hybrid power unit is fixed with the fuselage jaw, the circuit between the oil-electric hybrid power unit and the flight control module can be connected, the battery or range extender module in the oil-electric hybrid power unit can supply power to the flight control module in the frame, and the flight control module controls the rotation of the rotor motor and the blades installed in the rotor arm of the frame to form a hybrid oil-electric UAV, and the frame size is small and the structural strength is good.

[0005] A battery socket is provided in the middle of the frame. When the hybrid power unit in the jaws of the fuselage is disassembled, an external battery module can be inserted into the battery socket. The battery socket of the external battery module is connected to the circuit of the circuit connector, that is, the circuit between the external battery module and the flight control module is connected. The external battery module can supply power to the flight control module in the frame, and the flight control module controls the rotation of the rotor motor and the blades in the rotor arm of the frame to form an overall pure electric drive UAV. The body will become lighter and directly powered by the battery. When the flight time is short or the load is heavy, the body weight of the UAV can be greatly reduced, and it is also more convenient to use.

[0006] The circuit connector is rotatable and adjustable, and a circuit connector is provided on the front face of the circuit connector. When the circuit connector of the rotating circuit connector is facing the horizontal direction, after the oil-electric hybrid power unit is fixed with the fuselage jaws, the battery connector of the oil-electric hybrid power unit contacts the circuit connector, and the circuit between the oil-electric hybrid power unit and the flight control module is connected; when the circuit connector of the rotating circuit connector is in the upward positive direction, the external battery module is inserted into the battery socket, and the battery connector of the external battery module contacts the circuit connector of the circuit connector, and the circuit between the external battery module and the flight control module is connected. The circuit connector is provided with a rotatable and adjustable steering direction, so that a circuit connector can be matched with battery connectors inserted and connected in different directions by rotating the angle, which is more convenient to use.

[0007] The battery socket of the rack is provided with a plurality of clamping blocks which can cooperate with the clamping slots provided in the external battery module, so that the external battery module is clamped and hung in the battery socket of the rack and fixed. When the external battery module is pulled upward by an external force, and the upward pulling force is greater than the gravity and clamping force of the external battery module, the external battery module can be removed from the battery socket.

[0008] The back of the C-shaped bracket of the hybrid power unit is provided with a plurality of screw holes, through which the connecting screws are passed to connect with the screw holes provided in the frame, so that the hybrid power unit can be stably fixed in the jaws of the frame. The connecting screws can be any one of hand-tightened quick-release screws or ordinary screws or other fixing methods.

[0009] The upper end surface of the frame is provided with a pulley assembly for supporting the C-shaped bracket, and the pulley assembly includes a plurality of supporting pulleys and a guide plate. When installing the oil-electric hybrid power unit, the C-shaped jaws at the upper end of the C-shaped bracket can first fall into the pulley of the pulley assembly for support, and the guide plate guides and positions the left and right sides of the C-shaped bracket, and then the C-shaped jaws of the overall oil-electric hybrid power unit are pushed horizontally to be inserted into the jaws of the frame body for cooperation. When pushing the oil-electric hybrid power unit, the pulley assembly is used for support and guidance, which can save effort and facilitate installation.

[0010] The hybrid power unit includes a C-shaped bracket, a range extender module, a rectifier system, a fuel tank, and a battery module. The range extender module is arranged below the C-shaped bracket, and the fuel tank and the battery module are arranged at the upper end of the C-shaped bracket. The C-shaped jaws of the C-shaped bracket can be inserted into the jaws of the fuselage of the frame for matching, and the battery connector of the battery module is connected with the circuit connector. It is convenient to install and use. The user only needs to horizontally insert the C-shaped jaws of the entire drone power unit into the jaws of the frame for matching and fixing. The circuit between the battery connector of the battery module and the circuit connector is connected to form a hybrid drone. When the hybrid power is not needed, the user can simply disassemble it in the opposite direction horizontally, take out the entire hybrid power unit, and then replace the external battery module to replace the power unit module for use, which will become simpler and more convenient, and can also better realize the two options of pure battery use or installation of the range extender module, so that the battery power unit and the range extender power unit can be converted and installed according to actual use needs.

[0011] The C-shaped bracket of the hybrid power unit includes a bracket and a hanging plate. Symmetrical brackets are arranged at both ends of the hanging plate. The two brackets and the hanging plate form a whole C-shaped bracket. The two symmetrical brackets are provided with the same C-shaped jaws, which can be inserted into the jaws of the body of the frame for cooperation.

[0012] The upper end of the oil tank of the oil-electric hybrid power unit is provided with an oil tank cover, and the inside of the oil tank cover is provided with an oil pump, a filter, a pipeline and a line, and the pipeline is communicated with the inside of the oil tank, and the oil in the oil tank can be pumped into the engine of the range extender module for use. Or the inside of the oil tank is provided with an oil pump, a filter, a pipeline and a line, and the pipeline is communicated with the inside of the oil tank, and the oil in the oil tank can be pumped into the engine of the range extender module for use.

[0013] A battery access switch is provided in the battery module of the hybrid power unit. Activating the battery access switch can connect the circuit between the battery connector and the control module interface in the drone rack.

[0014] A rectifier system is provided in the hanging plate of the C-shaped hanging frame of the oil-electric hybrid power unit. The rectifier system is connected to the generator of the range extender through a wire. The rectifier system supplies power to the UAV power system or battery.

[0015] A range extender module is arranged below the C-shaped bracket of the hybrid power unit, and the range extender module may be any one of a common air-cooled range extender, a water-cooled range extender, or other range extenders that can be hung.

[0016] The range extender arranged below the C-shaped bracket of the hybrid power unit is an air-cooled range extender module, which includes a fairing, a cooling fan, and an engine module. A fairing is arranged below the hanging plate of the C-shaped bracket, and a plurality of hot air ducts are arranged in the middle of the fairing. Cooling fans for blowing air in opposite directions are arranged at the upper and lower ends of the fairing. The cooling fans at the upper and lower ends blow air in opposite directions to the engine in the fairing for forced heat dissipation. The airflows blown in opposite directions by the cooling fans at the upper and lower ends of the fairing collide in the middle of the engine and are discharged outward from the hot air duct of the fairing, and flow and diffuse to the surrounding area in the middle of the engine. The forced blowing of the cooling fans in opposite directions makes the heat dissipation of the engine module more sufficient, and the heat dissipation effect is significantly improved compared with the unidirectional blowing of a conventional single fan. When used in engines of the same model, the power can be increased.

[0017] The blowing direction of the cooling fan of the air-cooled range extender module is the same as the direction of the cooling fins of the engine. The airflow when the cooling fans above and below the fairing blow in opposite directions can better flow through the cooling fins of the engine, taking away the heat generated when the engine is working, and the heat dissipation effect is further improved.

[0018] A fixing plate is arranged under the hanging plate of the air-cooled range extender module, and the fixing plate is connected to the hanging plate through a plurality of buffer rubbers. The engine and generator module are mounted and fixed under the fixing plate, and the engine is in the fairing. The cooling fan and the fairing are relatively separated from the engine. The vibration generated when the engine is working will be weakened by the buffer rubber and then transmitted to the hanging plate, so as to avoid the cooling fan vibrating with the engine, thereby improving the fan life of the cooling system, and avoiding the rigidity of the cooling fan vibrating with the engine and being transmitted to the UAV frame, thereby increasing the overall vibration or shaking of the UAV.

[0019] The four corners of the fixed plate of the air-cooled range extender module are provided with buffer glue, and the connecting screws are connected through the screw holes of the fixed plate and the buffer glue, and the fixed plate is fixed under the hanging plate. The buffer glue is between the hanging plate and the fixed plate to form an integral frame, and the engine module is installed and fixed under the fixed plate. The buffer glue is preferably a cylindrical colloid, which is provided with screw holes or screw holes at the upper and lower ends. The buffer glue can be rubber, spring glue or other colloids with buffering function.

[0020] Fairings are arranged on both sides below the hanging plate of the air-cooled range extender module, and the lower ends of the fairings on the left and right sides are connected by a connecting plate, so that the hanging plate and the fairings on the left and right sides form a total fairing frame, and the engines on both sides of the engine module installed in the fixed plate are in the fairings on the left and right sides, and are relatively separated from the fairings without contact, while the overall engine module and the generator are inside the total fairing composed of the fairings on both sides. A connecting plate is provided to connect the fairings on the left and right sides, so that the fairings on both sides and the hanging plate constitute the overall frame of the range extender and form a large total fairing frame, thereby improving the overall stability of the range extender. A large hot air duct is formed between the connection of the two fairings. The engine module and the engines on both sides are in the total fairing frame. When the cooling fans of the left and right fairings blow air, the overall frame of the range extender collects forced convection cooling air to play a role in convection cooling of the engine, engine module and generator module, which can better improve the overall heat dissipation performance of the range extender, enable the engine module and the generator to exert more efficient output power, realize efficient operation of the power unit of the UAV, and achieve better results.

[0021] The beneficial effects of the present invention are as follows: 1. The frame is provided with a body jaw and a C-shaped jaw provided on a C-shaped bracket of the oil-electric hybrid power unit, which are clamped and connected to each other, and the circuit between the oil-electric hybrid power unit and the flight control module is connected to form an oil-electric hybrid UAV; 2. The frame is provided with a circuit connector component with a rotatable direction adjustment, which can be matched with a battery connector connected in different directions after rotating the angle; 3. When the oil-electric hybrid power unit module is not needed, it can be simply disassembled and taken out, and then the external battery module can be replaced with the oil-electric hybrid power unit module; 4. The range extender, fuel tank, battery, rectifier system and circuit are combined into an integrated power unit module, which can be conveniently connected to the frame of the UAV in a detachable manner, but it will cause the frame size to be too large and affect the structural strength of the frame. The frame size is small and the strength is good; 5. It can better Pure battery use or installation of range extender module can be achieved, so that the two power unit modules can be converted and installed according to actual use requirements; 6. The range extender module has high heat dissipation performance, and is equipped with a fairing and a heat dissipation air duct, as well as a heat dissipation fan that blows in opposite directions, which forces the engine in the fairing to dissipate heat; 7. The engine of the range extender module can work at a higher power working condition without being damaged by overheating; 8. The fixing plate of the range extender module is connected to the hanging plate through a buffer glue, and the engine and generator module of the range extender module are installed and fixed under the fixing plate. The cooling fan and the fairing are relatively separated from the engine. The vibration generated when the engine is working will be weakened by the buffer glue and then transmitted to the hanging plate, avoiding the cooling fan from vibrating with the engine, thereby improving the fan life of the cooling system, and also avoiding the rigidity of the cooling fan from vibrating with the engine and being transmitted to the UAV frame, thereby increasing the overall vibration of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the rack view of the drone;

[0023] Figure 2 This is a three-dimensional image of a drone in hybrid oil-electric mode;

[0024] Figure 3 It is a three-dimensional diagram of the gasoline-electric hybrid power unit;

[0025] Figure 4 It is an exploded view of the petrol-electric hybrid power unit;

[0026] Figure 5 This is a stereoscopic image of the drone in pure electric mode;

[0027] Figure 6 It is a three-dimensional picture of the C-shaped rack and the air-cooled range extender module;

[0028] Figure 7 This is an exploded view of the C-shaped rack and air-cooled range extender module;

[0029] Figure 8 This is a view of the air-cooled range extender module frame;

[0030] Fig. 9 This is an exploded view of the air-cooled range extender module frame;

[0031] In the figure: 01, frame, 1, hanging plate, 2, bracket, 3, fairing, 4, hot air duct, 5, cooling fan, 6, fixing plate, 7, buffer rubber, 8, engine, 9, connecting plate, 10, rectifier system, 11, cooling ribs, 12 battery module, 13, fuel tank, 14, fuel tank top cover, 15, battery access switch, 16, battery connector, 17, support part, 18, circuit connector, 19, circuit connector, 20, fuselage jaw, 21, C-shaped jaw, 22, pulley assembly, 23, flight control module, 24, screw hole, 25, battery socket, 26, external battery module, 27, card block, 28, card slot. DETAILED DESCRIPTION

[0032] exist Figure 1-5In the embodiment of the present application shown, a pure electric and hybrid oil-electric UAV includes a frame 01, a circuit connector 18, and an oil-electric hybrid power unit. The frame 01 is provided with a body jaw 20 and a C-shaped jaw 21 provided on a C-shaped bracket 2 of the oil-electric hybrid power unit, which are clamped together and connected. The body jaw 20 is provided with a circuit connector 18 connected to the battery connector 16 of the oil-electric hybrid power unit. The circuit connector 18 is connected to the line of a flight control module 23. After the oil-electric hybrid power unit is fixed to the body jaw 20, the circuit between the oil-electric hybrid power unit and the flight control module 23 can be connected. The battery or range extender module in the oil-electric hybrid power unit can power the flight control module 23 in the frame 01, and the flight control module 23 controls the rotation of the rotor motor and blades installed in the rotor arm of the frame 01 to form a hybrid oil-electric UAV. When the frame 01 is provided with a body jaw 20 which cooperates with the C-shaped bracket 2 of the oil-electric hybrid power unit, the body jaw 20 can clamp the left and right sides of the C-shaped bracket 2 of the oil-electric hybrid power unit, which can reduce the looseness or vibration of the left and right sides when the oil-electric hybrid power unit is working. The C-shaped bracket 2 is in the body jaw 20 to clamp the frame 01 up and down, which can reduce the looseness or vibration of the upper and lower ends when the oil-electric hybrid power unit is working, so that the oil-electric hybrid power unit is installed in the frame 01 with higher stability, and is also convenient during disassembly or installation, and the frame size can be made smaller without affecting the strength.

[0033] A battery socket 25 is provided in the middle of the frame 01. When the hybrid power unit in the fuselage jaws 20 is disassembled, an external battery module 26 can be inserted into the battery socket 25. The battery socket 16 of the external battery module 26 is connected to the circuit of the circuit connector 18, that is, the circuit between the external battery module 26 and the flight control module 23 is connected. The external battery module 26 can supply power to the flight control module 23 in the frame 01, and the flight control module 23 controls the rotation of the rotor motor and the blades in the rotor arm of the frame 01 to form an overall pure electric drive drone. The body will become lighter and directly powered by the battery. When the drone is used with short flight time or heavy load, the body weight of the drone can be greatly reduced, and it is also more convenient to use.

[0034] The battery socket 25 of the rack 01 is provided with a plurality of clamping blocks 27 which can cooperate with the clamping slots 28 provided in the external battery module 26 to clamp and hang the external battery module 26 in the battery socket 25 of the rack 01. When the external battery module 26 is pulled upward by an external force, and the upward pulling force is greater than the gravity and clamping force of the external battery module 26, the external battery module 26 can be removed from the battery socket 25.

[0035] The circuit connector 18 is rotatable and adjustable, and a circuit connector 19 is provided on the front face of the circuit connector 18. When the circuit connector 19 of the rotating circuit connector 18 is facing the horizontal direction, after the oil-electric hybrid power unit is fixed with the fuselage jaw 20, the battery connector 16 of the oil-electric hybrid power unit contacts the circuit connector 19, and the circuit between the oil-electric hybrid power unit and the flight control module 23 is connected; when the circuit connector 19 of the rotating circuit connector 18 is in the upward positive direction, the external battery module 26 is inserted into the battery socket 25, and the battery connector 16 of the external battery module 26 contacts the circuit connector 19 of the circuit connector 18, and the circuit between the external battery module 26 and the flight control module 23 is connected. The circuit connector 18 that can be rotatably adjusted in direction is provided, so that one circuit connector 19 can be matched with the battery connector 16 inserted and connected in different directions by rotating the angle, which is more convenient to use. Without limitation, the present application may also use a fixed circuit connector 18 to match the battery connector 16 of the hybrid power unit with the circuit connector 18 through a wire; or connect the battery connector 16 of the external battery module 26 with the circuit of the circuit connector 18 through a wire.

[0036] The back of the C-shaped bracket 2 of the hybrid power unit is provided with a plurality of screw holes 24, and the hybrid power unit can be stably fixed in the jaws 20 of the rack 01 by connecting screws through the screw holes 24 and connecting with the screw holes provided in the rack 01. The connecting screws can be any one of a hand-tightened quick-release screw or an ordinary screw.

[0037] The upper end surface of the frame 01 is provided with a pulley assembly 22 for supporting the C-shaped bracket. The pulley assembly 22 includes a plurality of supporting pulleys and a guide plate. When installing the hybrid power unit, the C-shaped jaws at the upper end of the C-shaped bracket can first fall into the pulley of the pulley assembly 22 for support, and the guide plate guides and positions the left and right sides of the C-shaped bracket, and then pushes the C-shaped jaws 21 of the overall hybrid power unit to be horizontally inserted into the body jaws 20 of the frame 01 for cooperation. When pushing the hybrid power unit, the pulley assembly is provided for support, which can save effort in installation.

[0038] The hybrid power unit includes a C-shaped bracket, a range extender module, a rectifier system 10, a fuel tank 13, and a battery module 12. The range extender module is arranged at the bottom of the C-shaped bracket, and the fuel tank 13 and the battery module 12 are arranged at the upper end of the C-shaped bracket. The C-shaped jaw 21 of the C-shaped bracket can be horizontally inserted into the fuselage jaw 20 of the frame 01 for cooperation. The battery connector 16 of the battery module 12 is connected to the circuit connector 18 to form an integrated drone. It is convenient to install and use. The user only needs to horizontally insert the C-shaped jaws of the entire drone power unit into the jaws 20 of the frame 01 and then fix them. The circuit between the battery connector 16 of the battery module 12 and the circuit connector 18 is connected to form a hybrid drone. When the hybrid is not needed, the user can simply disassemble it horizontally in the opposite direction, take out the entire hybrid power unit, and then replace the external battery module 26 to replace the power unit module. It will become simpler and more convenient, and it can also better realize the two options of pure battery use or installation of the range extender module, so that the battery power unit and the range extender power unit can be converted and installed according to actual use needs.

[0039] The C-shaped bracket includes a bracket 2 and a hanging plate 1. Symmetric brackets 2 are provided at both ends of the hanging plate 1. The two brackets 2 and the hanging plate 1 form a whole C-shaped bracket. The two symmetrical brackets 2 are provided with the same C-shaped jaws 21. The C-shaped jaws 21 can be inserted into the fuselage jaws 20 of the frame 01 for cooperation. The C-shaped bracket formed by the hanging plate 1 and the bracket 2 can conveniently insert the entire power unit module horizontally into the unmanned aerial vehicle frame to clamp the frame during installation. Even if the power unit composed of the range extender module, the fuel tank 13, and the battery module 12 is installed and composed of the entire power unit is heavy, during installation, due to the C-shaped jaws 21 and the ability to be inserted horizontally into the unmanned aerial vehicle frame for clamping, after clamping, the oil-electric hybrid power unit module can be stably clamped in the unmanned aerial vehicle frame, and then the C-shaped bracket is connected to the frame 01 by connecting screws to be fixed as a whole, or the C-shaped bracket is connected to the frame 01 by a quick-connect mechanism to be fixed as a whole.

[0040] It is possible, but not limited to, that the bracket 2 and the hanging plate 1 of the C-shaped bracket are made of aluminum alloy or other materials with lower density, for example, any one of aluminum alloy, carbon fiber or high-strength plastic, and the bracket 2 and the hanging plate 1 are hollow frames.

[0041] A fuel tank cover 14 is disposed at the upper end of the fuel tank 13. An oil pump, a filter, pipelines and lines are disposed inside the fuel tank cover 14. The pipelines are connected to the inside of the fuel tank 13, and the oil in the fuel tank 13 can be pumped into the engine of the range extender module for use.

[0042] The battery module 12 is provided with a battery access switch 15 , and starting the battery access switch 15 can connect the circuit between the battery connector 16 and the control module interface in the drone rack.

[0043] A rectifier system 10 is disposed at the upper end of the hanging plate 1. The rectifier system 10 is connected to the generator of the range extender through a wire. The rectifier system 10 supplies power to the UAV power system or battery.

[0044] A range extender module is arranged below the C-shaped bracket and may be any one of a common and commonly used air-cooled range extender, a water-cooled range extender, or other range extenders that can be hung.

[0045] exist Figure 6-9 In the illustrated embodiment, a range extender module is provided below the C-shaped bracket, which is an air-cooled range extender module. The range extender module includes a fairing 3, a cooling fan 5, and an engine module. A fairing 3 is provided below the hanging plate 1 of the C-shaped bracket, and a plurality of hot air ducts 4 are provided in the middle of the fairing 3. Cooling fans 5 for blowing air in opposite directions are provided at the upper and lower ends of the fairing 3. The cooling fans 5 at the upper and lower ends blow air in opposite directions to the engine 8 in the fairing for forced heat dissipation. The airflows blown in opposite directions by the cooling fans 5 at the upper and lower ends of the fairing 3 collide in the middle of the engine 8 and are discharged outward from the hot air duct 4 of the fairing 3, and flow and diffuse to the surrounding area in the middle of the engine 8. The forced blowing of the cooling fans 5 in opposite directions makes the heat dissipation of the engine module more sufficient and faster. By providing a fairing 3 and a cooling fan 5 for blowing in opposite directions, the fairing 3 can play a role in collecting and guiding the air, so that the airflow can flow to the engine 8 more concentratedly, and then the colliding airflows are emitted and discharged from the hot air duct 4 and the middle of the engine. The heat dissipation effect is significantly improved compared with the conventional single fan unidirectional blowing. When used in engines of the same model, the power can be increased.

[0046] The blowing direction of the cooling fan 5 is the same as the direction of the cooling fins 11 of the engine 8. When the cooling fans 5 above and below the fairing 3 blow in opposite directions, the airflow can flow through the cooling fins 11 of the engine 8 better, taking away the heat generated when the engine is working, and the heat dissipation effect is further improved.

[0047] A fixing plate 6 is provided below the hanging plate 1, and the fixing plate 6 is connected to the hanging plate 1 through a plurality of buffer rubbers 7. The engine 8 and the generator module are mounted and fixed below the fixing plate 6, and the engine 8 is in the fairing 3. The cooling fan 5 and the fairing 3 are relatively separated from the engine 8. The vibration generated when the engine 8 is working will be weakened by the buffer rubber 7 and then transmitted to the hanging plate 1, so as to avoid the cooling fan 5 from vibrating with the engine 8, thereby improving the fan life of the cooling system, and avoiding the cooling fan 5 from rigidly following the vibration of the engine 8 and transmitting it to the UAV frame, thereby increasing the vibration or shaking of the UAV as a whole.

[0048] Buffer glue 7 is provided at the four corners of the fixing plate 6, and the connecting screws pass through the through holes of the fixing plate 6 and the buffer glue 7 to fix the fixing plate 6 under the hanging plate 1. The buffer glue 7 is located between the hanging plate 1 and the fixing plate 6 to form an integral frame, and the engine module is installed and fixed under the fixing plate 6.

[0049] The buffer glue 7 is preferably a cylindrical colloid with a screw hole in the middle. The buffer glue 7 can be rubber, spring glue or other colloids with buffering function.

[0050] Fairings 3 are provided on both sides below the hanging plate 1, and the lower ends of the fairings 3 on the left and right sides are connected by a connecting plate 9, so that the hanging plate 1 and the fairings 3 on the left and right sides form a total fairing frame, and the engines 8 on both sides of the engine module installed in the fixing plate 6 are located in the fairings 3 on the left and right sides, and are relatively separated from the fairings 3 without contact, while the overall engine module and the generator are located inside the total fairing composed of the fairings 3 on both sides. By providing a connecting plate 9 to connect the fairings 3 on the left and right sides, the fairings 3 on both sides and the hanging plate 1 constitute the overall frame of the range extender and form a large total fairing frame, thereby improving the overall stability of the range extender. A large hot air duct 4 is formed between the connection of the two fairings 3. The engine module and the engines 8 on both sides are in the total fairing frame. When the cooling fans 5 of the left and right fairings 3 blow air, the overall frame of the range extender collects forced convection cooling air, which plays a role in convection cooling of the engine 8, the engine module, and the generator module, thereby better improving the overall heat dissipation performance of the range extender and enabling the engine module and the generator to exert more efficient output power.

[0051] The basic principles, main features and advantages of the present invention are shown and described above. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention.

Claims

1. A pure electric and hybrid electric drone, comprising a frame, wherein a circuit plug component is provided in the frame, and a hybrid electric unit or an external battery module can be installed in the frame to cooperate with the circuit plug component, characterized in that: The frame is provided with a fuselage jaw which is clamped and connected with the C-shaped jaw of the C-shaped bracket of the oil-electric hybrid power unit. The fuselage jaw is provided with a circuit connector which is connected with the battery connector of the oil-electric hybrid power unit. The circuit connector is connected with the line of the flight control module. After the oil-electric hybrid power unit is fixed with the fuselage jaw, the circuit between the oil-electric hybrid power unit and the flight control module can be connected. The battery or range extender module in the oil-electric hybrid power unit can supply power to the flight control module in the frame. The flight control module controls the rotation of the rotor motor and blades installed in the rotor arm of the frame to form an oil-electric hybrid UAV.

2. A pure electric and hybrid electric drone according to claim 1, characterized in that: A battery socket is provided in the middle of the frame. When the hybrid power unit in the jaws of the fuselage is removed, an external battery module can be inserted into the battery socket. The battery socket of the external battery module is connected to the circuit of the circuit connector. The external battery module can supply power to the flight control module in the frame. The flight control module controls the rotation of the rotor motor and the blades in the rotor arm of the frame to form a pure electric drive drone, and the body becomes lighter.

3. A pure electric or hybrid electric drone according to claim 1 or 2, characterized in that: The circuit connector is rotatable and adjustable, and a circuit connector port is provided on the front end surface of the circuit connector. The circuit connector and the circuit connector port can be rotated to allow the circuit connector port to cooperate with battery connectors inserted and connected from different directions.

4. The pure electric and hybrid electric drone according to claim 2, characterized in that: The battery insertion port of the rack is provided with a plurality of card blocks which can cooperate with the card slots provided in the external battery module, so that the external battery module is clamped and hung in the battery insertion port of the rack and fixed.

5. The pure electric and hybrid electric drone according to claim 1, characterized in that: The back of the C-shaped bracket of the hybrid power unit is provided with a plurality of screw holes for passing therethrough, and the hybrid power unit can be stably fixed in the jaws of the rack by connecting screws through the screw holes and connecting with the screw holes arranged in the rack.

6. A pure electric or hybrid electric drone according to claim 1 or 5, characterized in that: The upper end surface of the frame is provided with a pulley assembly for supporting the C-shaped hanger, and the pulley assembly includes a plurality of supporting pulleys and a guide plate.

7. A pure electric or hybrid electric drone according to claim 1 or 5, characterized in that: The hybrid power unit includes a C-shaped bracket, a range extender module, a rectifier system, a fuel tank, and a battery module. The range extender module is arranged below the C-shaped bracket, and the C-shaped bracket is provided with a fuel tank and a battery module. The C-shaped jaws of the C-shaped bracket can be inserted into the jaws of the fuselage of the frame for cooperation.

8. The pure electric and hybrid electric drone according to claim 7, characterized in that: The C-shaped bracket of the hybrid power unit includes a bracket and a bracket plate. Symmetric brackets are arranged at both ends of the bracket plate. The two brackets and the bracket plate form a whole of the C-shaped bracket. The two symmetrical brackets are provided with the same C-shaped jaws.

9. The pure electric and hybrid electric drone according to claim 8, characterized in that: The range extender arranged below the C-shaped bracket of the hybrid power unit is an air-cooled range extender module, which includes a fairing, a cooling fan, and an engine module. A fairing is arranged below the hanging plate of the C-shaped bracket, and a plurality of hot air ducts are arranged in the middle of the fairing. Cooling fans for blowing air in opposite directions are arranged at the upper and lower ends of the fairing. The cooling fans at the upper and lower ends blow air in opposite directions to the engine in the fairing for forced heat dissipation. The airflows blown in opposite directions by the cooling fans at the upper and lower ends of the fairing collide in the middle of the engine and are discharged outward from the hot air duct of the fairing, and flow and diffuse to the surrounding area in the middle of the engine. The forced blowing of the cooling fans in opposite directions makes the heat dissipation of the engine module more sufficient.

10. A pure electric and hybrid electric drone according to claim 9, characterized in that: A fixing plate is arranged below the hanging plate of the air-cooled range extender module, and the fixing plate is connected to the hanging plate through a plurality of buffer rubbers. The engine and generator module are mounted and fixed below the fixing plate. The engine is in the fairing, and the cooling fan and the fairing are relatively separated from the engine. The vibration generated when the engine is working will be weakened by the buffer rubber and then transmitted to the hanging plate.

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