Heavy-load unmanned aerial vehicle assisted take-off system and method

Abstract

The invention provides a heavy-load unmanned aerial vehicle assisted take-off system and method, and relates to the technical field of unmanned aerial vehicles, the heavy-load unmanned aerial vehicle comprises a heavy-load unmanned aerial vehicle, the heavy-load unmanned aerial vehicle comprises a fuselage, an undercarriage arranged on the fuselage, a flight control system and an airborne battery; one end of the power line is connected to a ground power supply, and the other end is connected to a separable power supply docking mechanism; in a take-off stage, the separable power supply docking mechanism is electrically connected with the heavy-load unmanned aerial vehicle, so that the ground power supply supplies power to the heavy-load unmanned aerial vehicle through the power line; and after the take-off is completed, the separable power supply docking mechanism is separated from the heavy-load unmanned aerial vehicle, and the heavy-load unmanned aerial vehicle is powered by the airborne battery and flies. The separable power supply docking mechanism is powered by a ground power supply in a takeoff stage, so that the problems of high takeoff energy consumption, heavy battery load and the like are solved; a power supply docking unmanned aerial vehicle or an electric off-line device is adopted for automatic separation, the endurance and loading capacity is improved, the weight is reduced, and the flight efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicles, and particularly relates to a heavy-load unmanned aerial vehicle assisted take-off system and method. BACKGROUND

[0002] A heavy-load unmanned aerial vehicle, usually referring to an unmanned aerial vehicle with a payload capacity of 100 kg or more, is a model of deep integration of aviation technology and intelligent control technology in recent years. Compared with traditional light and small unmanned aerial vehicles, it shows great application potential and market prospect in many fields such as logistics transportation, emergency rescue, agricultural and forestry sowing, industrial hoisting, power inspection and the like. For example, in remote area material delivery, cross-island supply, large infrastructure engineering construction, the heavy-load unmanned aerial vehicle can effectively overcome the terrain restriction, provide efficient and flexible air transportation solutions, and greatly reduce the labor and time cost, and is honored as one of the core equipment of future low-altitude economy.

[0003] However, compared with the broad application prospect, the technical development of the heavy-load unmanned aerial vehicle, especially in terms of endurance and efficiency, is facing certain technical defects, and the technical problem urgently needed to be solved is the extremely high energy consumption in the take-off stage. In the vertical take-off stage, in order to overcome the total gravity of its own weight and load, the power system needs to output a large power in a short time, and the motor and propeller are in full load or overload working state. This process, although short, will consume a large amount of electric energy of the on-board battery. According to incomplete statistics, the electric energy consumed in take-off can reach 30% of the electric energy of the on-board battery.

[0004] This directly leads to two serious technical problems: first, the effective range is greatly shortened. Since most of the electric energy is consumed in the initial stage of take-off, the energy left for cruising and operation is greatly reduced, which seriously limits its operation range. Second, the effective flight time is sharply reduced. Even in short-distance operation, the sustainable flight time is greatly reduced due to the decrease of total electric quantity, so that it cannot fly for a long time.

[0005] At present, the conventional solutions in the industry mainly focus on increasing the battery capacity, improving the battery energy density or optimizing the aerodynamic design. However, simply increasing the battery capacity will increase the weight of the unmanned aerial vehicle, which may further aggravate the energy consumption during take-off, forming a vicious cycle; and the improvement of the battery energy density depends on the breakthrough of basic material science, which is difficult to achieve a leap in the short term. It is more difficult to quickly see the effect of optimizing the aerodynamic design. That is, the existing technology still needs to be improved to solve the problem of high energy consumption of the heavy-load unmanned aerial vehicle in the take-off stage. SUMMARY

[0006] The present application overcomes the shortcomings in the prior art, and provides a heavy-load unmanned aerial vehicle assisted take-off system and method, which is powered by a ground power source through a separable power supply docking mechanism in the take-off stage, thereby solving the problems of high take-off energy consumption and heavy battery burden; the power supply docking unmanned aerial vehicle or the electric wire disconnecting device is automatically separated, thereby improving the endurance and load capacity, reducing the weight, and improving the flight efficiency.

[0007] To solve the above technical problems, the present application is realized by the following technical solutions: A heavy-load unmanned aerial vehicle assisted take-off system, comprising: The heavy-load unmanned aerial vehicle comprises a fuselage, a landing gear arranged on the fuselage, a flight control system, and an on-board battery; A power line, one end of which is connected to a ground power source and the other end of which is connected to a separable power supply docking mechanism; In the take-off stage, the separable power supply docking mechanism is electrically connected to the heavy-load unmanned aerial vehicle, so that the ground power source supplies power to the heavy-load unmanned aerial vehicle through the power line; After the take-off is completed, the separable power supply docking mechanism is separated from the heavy-load unmanned aerial vehicle, and the heavy-load unmanned aerial vehicle is powered by the on-board battery and performs flight operation.

[0008] Further, the heavy-load unmanned aerial vehicle is provided with a first electric connector; the separable power supply docking mechanism comprises a second electric connector connected to the power line; and the first electric connector and the second electric connector are used in pairs; When the second electric connector is connected in pairs with the first electric connector, the ground power source supplies power to the heavy-load unmanned aerial vehicle through the power line, the second electric connector, and the first electric connector in sequence.

[0009] Further, the second electric connector is mounted on the power supply docking unmanned aerial vehicle; In the take-off, the power supply docking unmanned aerial vehicle takes off together with the heavy-load unmanned aerial vehicle; after taking off to a predetermined height, the two are separated, the first electric connector is separated from the second electric connector, the heavy-load unmanned aerial vehicle is powered by the on-board battery to continue flying, and the power supply docking unmanned aerial vehicle carries the second electric connector to land on the ground.

[0010] Further, the first electric connector is a socket / plug, and the second electric connector is a plug / socket matched with the socket / plug.

[0011] Further, the present application further comprises: A docking module for locking and docking the power supply docking unmanned aerial vehicle under the fuselage of the heavy-load unmanned aerial vehicle in the take-off stage; A separation driving module is arranged for receiving a separation signal and driving the docking module to unlock, so that the power supply docking UAV and the heavy-load UAV are separated.

[0012] Further, an electric wire disconnecting device is arranged on the heavy-load UAV. After take-off, the electric wire disconnecting device is started to separate the first electric connector from the second electric connector, the power supply line and the second electric connector fall to the ground under the action of gravity, and the heavy-load UAV enters cruising flight.

[0013] Further, the electric wire disconnecting device is a rudder.

[0014] A power-assisted take-off method is applied to the heavy-load UAV power-assisted take-off system, and comprises the following steps: The take-off step: the separable power supply docking mechanism is electrically docked with the heavy-load UAV; the ground power supply is started to provide the heavy-load UAV with power required for take-off through the power supply line; and the heavy-load UAV takes off. The separation step: after the heavy-load UAV takes off to a predetermined height or completes the take-off phase, the separable power supply docking mechanism is controlled to perform a separation operation to separate from the heavy-load UAV. The cruising flight step: after the power supply is disconnected, the heavy-load UAV is switched to be powered by the on-board battery and flies to a task area to perform a task.

[0015] Further, the separable power supply docking mechanism comprises a second electric connector connected with the power supply line, and the second electric connector is used in pairs with a first electric connector of the heavy-load UAV.

[0016] Further, the second electric connector is fixed on a power supply docking UAV. In the take-off phase, the power supply docking UAV is docked and locked below the heavy-load UAV, the second electric connector is docked with the first electric connector, and the power supply docking UAV and the heavy-load UAV take off together. After take-off, the power supply docking UAV is controlled to be unlocked and separated from the heavy-load UAV, and the power supply docking UAV is controlled to autonomously land to the ground with the power supply line and the second electric connector. Or, The heavy-load UAV is provided with an electric wire disconnecting device. After take-off, the electric wire disconnecting device is controlled to act, so that the second electric connector is separated from the first electric connector, and the power supply line and the second electric connector fall to the ground under the action of gravity.

[0017] Compared with the prior art, the present application has the following advantages: The application provides a heavy-load unmanned aerial vehicle assisted take-off system, which is provided with a detachable power supply docking mechanism, so that the heavy-load unmanned aerial vehicle is provided with additional power support by a ground power supply in a take-off stage, effectively solving problems of large energy consumption, heavy battery burden and difficult take-off of the heavy-load unmanned aerial vehicle in the take-off stage. The system provides stable and continuous high-power power supply for the unmanned aerial vehicle in the initial take-off stage, ensures that the unmanned aerial vehicle can still realize rapid and stable take-off in a full load or overload state, and also eliminates the fault of the on-board battery due to excessive current and high temperature rise in take-off, greatly improving the reliability and safety in the take-off stage.

[0018] The power supply module is automatically separated by the power supply docking unmanned aerial vehicle or the electric wire release device, the structure is reasonable, the operation is convenient, and the subsequent flight task of the heavy-load unmanned aerial vehicle is not affected. Through the assisted take-off mode, the endurance time and task load capacity of the heavy-load unmanned aerial vehicle can be effectively prolonged, the dependence on the on-board battery capacity is reduced, so that the weight of the whole machine is reduced and the flight efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the application, together with the embodiments of the application, to explain the application, and do not constitute a limitation to the application, and in the drawings: Figure 1 is a first embodiment schematic diagram of a take-off system, and the heavy-load unmanned aerial vehicle has an electric wire release device; Figure 2 is a first embodiment schematic diagram of a take-off system, and the heavy-load unmanned aerial vehicle has an electric wire release device; Figure 1 is an enlarged view of the A circle in Figure 3 is a first embodiment schematic diagram of a take-off system, and the heavy-load unmanned aerial vehicle has an electric wire release device; Figure 4 is an enlarged view of the B circle in Figure 3 Figure 5 is a structure schematic diagram of the electric wire release device, the limiting rod, the first electric connector and the second electric connector; Figure 6 is a second embodiment schematic diagram of a take-off system, and the take-off system has a power supply docking unmanned aerial vehicle; Figure 7 is an enlarged view of the C circle in Figure 6

[0020] In the figure: 1, heavy-load unmanned aerial vehicle; 101, fuselage; 102, landing gear; 103, first electric connector; 104, limiting rod; 2, power supply line; 3, second electric connector; 4, electric wire release device; 5, power supply docking unmanned aerial vehicle; 6, ground power supply. DETAILED DESCRIPTION

[0021] ​​The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, it should be understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0022] As shown in Figure 1 , the present application provides a heavy-duty unmanned aerial vehicle assisted take-off system, comprising a heavy-duty unmanned aerial vehicle 1, a power line 2, a detachable power supply docking mechanism and the like. Among them, the heavy-duty unmanned aerial vehicle 1 comprises a fuselage 101, a landing gear 102 arranged on the fuselage 101, a flight control system and an on-board battery. The landing gear 102 supports the fuselage 101, the flight control system is the core control component of the heavy-duty unmanned aerial vehicle, which is used to control the flight attitude and trajectory of the heavy-duty unmanned aerial vehicle, and the on-board battery provides the power required for the cruising flight of the heavy-duty unmanned aerial vehicle.

[0023] One end of the power line 2 is connected to the ground power supply 6, and the other end is connected to the detachable power supply docking mechanism. In the take-off stage, the detachable power supply docking mechanism is electrically connected with the heavy-duty unmanned aerial vehicle 1, so that the ground power supply 6 supplies power to the heavy-duty unmanned aerial vehicle 1 through the power line 2. After take-off is completed, the detachable power supply docking mechanism is separated from the heavy-duty unmanned aerial vehicle 1, and the heavy-duty unmanned aerial vehicle 1 is powered by the on-board battery and performs flight operation.

[0024] The heavy-duty unmanned aerial vehicle 1 is provided with a first electric connector 103, and the detachable power supply docking mechanism comprises a second electric connector 3 connected with the power line 2. When the second electric connector 3 is connected with the first electric connector 103, the ground power supply 6 supplies power to the heavy-duty unmanned aerial vehicle 1 through the power line 2, the second electric connector 3 and the first electric connector 103 in turn.

[0025] In the present embodiment, the first electric connector 103 is a socket / plug arranged on the heavy-duty unmanned aerial vehicle, and the second electric connector 3 is a plug / socket matched with the socket / plug. During take-off, the plug is inserted into the socket to realize power transmission. After taking off to a predetermined height, the plug is separated from the socket, and the heavy-duty unmanned aerial vehicle 1 enters cruising flight.

[0026] As shown in Figures 1 to 5 , as a first embodiment, the heavy-duty unmanned aerial vehicle 1 is provided with an electric wire disconnecting device 4. After take-off is completed, the electric wire disconnecting device 4 is started to separate the first electric connector 103 from the second electric connector 3, and the power line 2 falls to the ground under the action of gravity, and the heavy-duty unmanned aerial vehicle 1 enters cruising flight operation. In the present embodiment, the electric wire disconnecting device 4 can be a rudder specifically, and the reliable separation of the first electric connector 103 from the second electric connector 3 is realized through the accurate control of the rudder. In combination with Figure 2 and Figure 5As shown, the heavy-duty UAV 1 is equipped with a pair of limit rods 104. The second electrical connector 3 is located below the pair of limit rods 104. The first electrical connector 103 is connected to the rocker arm of the servo motor. When the first electrical connector 103 is separated from the second electrical connector 3, the rocker arm of the servo motor swings and drives the first electrical connector 103 to move upward. Since the second electrical connector 3 is restricted by the limit rods 104 and cannot move upward, it separates from the first electrical connector 103.

[0027] Preferably, this embodiment is applicable to heavy-duty drones 1 that use high-voltage power supply, such as 600V, 800V or 1000V. In this case, the power supply cable 2 has a small wire diameter, so the power supply cable 2 is directly supplied from the ground power supply 6. The heavy-duty drone 1 is equipped with an electric disconnect device 4 for unplugging the first electrical connector 103. After the heavy-duty drone 1 takes off, the electric disconnect device 4 of the heavy-duty drone 1 pulls down the first electrical connector 103, and the power cable 2 is also disconnected to the ground, and the heavy-duty drone 1 flies out to work.

[0028] like Figures 6 to 7 As shown, in the second embodiment, a power supply docking drone 5 is also included, with the second electrical connector 3 mounted on the power supply docking drone 5. During takeoff, the power supply docking drone 5 and the heavy-load drone 1 take off together. After reaching a predetermined altitude, they separate, the first electrical connector 103 separates from the second electrical connector 3, the heavy-load drone 1 continues flying, and the power supply docking drone 5, carrying the second electrical connector 3, lands on the ground.

[0029] To achieve reliable connection and separation between the power supply docking drone 5 and the heavy-load drone 1, the system also includes a docking module and a separation drive module. The docking module locks the power supply docking drone 5 to the underside of the fuselage 101 of the heavy-load drone 1 during takeoff, ensuring stability during flight. The separation drive module receives a separation signal and drives the docking module to unlock, enabling the power supply docking drone 5 to separate from the heavy-load drone 1.

[0030] This embodiment applies to heavy-duty drone 1 powered by low voltage, such as ground power supply 6 which only has a voltage of 100V. Because the heavy-duty drone 1 has a payload exceeding 100kg, and due to the large current and the large diameter and weight of the required power cable 2, directly connecting it to the heavy-duty drone 1 as in the first embodiment would increase its burden and slow down takeoff. Therefore, the second electrical connector 3, which connects to the power cable 2, is fixed to the power supply docking drone 5, which connects to the heavy-duty drone 1 from below. During takeoff, the power supply docking drone 5 takes off together with the heavy-duty drone 1. After takeoff, the power supply docking drone 5 disconnects the second electrical connector 3, and then the power supply docking drone 5 separates, without increasing the burden on the heavy-duty drone 1.

[0031] The application further discloses a boosting take-off method using the heavy-load unmanned aerial vehicle boosting take-off system. A take-off step The separable power supply docking mechanism is electrically connected with the heavy-load unmanned aerial vehicle 1, and the first electric connector 103 is connected with the second electric connector 3. The ground power supply 6 is started, the power supply line 2 is used to provide power required for take-off for the heavy-load unmanned aerial vehicle 1, and the heavy-load unmanned aerial vehicle 1 takes off. During the take-off process, the flight control system accurately controls the attitude and flight trajectory of the unmanned aerial vehicle according to a preset program, and ensures safe take-off.

[0032] A separation step When the heavy-load unmanned aerial vehicle 1 takes off to a predetermined height or completes the take-off phase, the separable power supply docking mechanism is controlled to perform a separation operation. If the power supply docking unmanned aerial vehicle 5 is used, the power supply docking unmanned aerial vehicle 5 is controlled to be unlocked and separated from the heavy-load unmanned aerial vehicle 1, and the power supply docking unmanned aerial vehicle 5 is controlled to autonomously land to the ground with the power supply line 2 and the second electric connector 3; if the electrically-driven wire separation device 4 is used, the electrically-driven wire separation device 4 is controlled to act, so that the second electric connector 3 is separated from the first electric connector 103, and the power supply line 2 and the second electric connector 3 fall to the ground under the action of gravity.

[0033] A cruising flight step After the heavy-load unmanned aerial vehicle 1 is disconnected from the power supply, the heavy-load unmanned aerial vehicle 1 is switched to be powered by the on-board battery, the flight control system controls the unmanned aerial vehicle to fly to a task area to perform a task according to a task requirement. During the flight process, the flight control system can also monitor the state of the unmanned aerial vehicle in real time, such as power, attitude, position and the like, and make corresponding adjustment and control according to the monitoring result, so that the unmanned aerial vehicle can safely and accurately complete the task.

[0034] The application provides a heavy-load unmanned aerial vehicle boosting take-off system, through the separable power supply docking mechanism, additional power support is provided for the unmanned aerial vehicle by the ground power supply 6 in the take-off phase, and problems such as large energy consumption, heavy battery burden and difficult take-off of the heavy-load unmanned aerial vehicle 1 in the take-off phase are effectively solved. The system provides stable and continuous high-power power supply for the unmanned aerial vehicle in the initial take-off stage, ensures that the unmanned aerial vehicle can still realize rapid and smooth take-off in a full-load or overload state, and greatly improves the reliability and safety in the take-off stage.

[0035] The power supply module is automatically separated by using the power supply docking unmanned aerial vehicle 5 or the electrically-driven wire separation device 4, the structure is reasonable, the operation is convenient, and the subsequent flight task of the main unmanned aerial vehicle is not affected. Through the boosting take-off mode, the endurance time and task load capacity of the heavy-load unmanned aerial vehicle 1 can be effectively prolonged, the dependence on the on-board battery capacity is reduced, the weight of the whole machine is reduced, and the flight efficiency is improved.

[0036] Finally, it should be noted that the above is only the preferred embodiment of the present application, and is not intended to limit the present application, although the embodiments are described in detail with reference to the present application, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, but any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A heavy duty drone boost take-off system characterized by, The utility model relates to a kind of heavy-lift unmanned aerial vehicle (1), including fuselage (101), landing gear (102) being arranged on fuselage (101), flight control system and on-board battery;Power line (2), one end is connected to ground power supply (6), the other end is connected to a separable power supply docking mechanism;In the take-off stage, the separable power supply docking mechanism is electrically connected with the heavy-lift unmanned aerial vehicle (1), so that the ground power supply (6) is powered to the heavy-lift unmanned aerial vehicle (1) by the power line (2);After take-off is completed, the separable power supply docking mechanism is separated from the heavy-lift unmanned aerial vehicle (1), and the heavy-lift unmanned aerial vehicle (1) is powered by the on-board battery and carries out flight operation. The heavy-lift unmanned aerial vehicle (1) is provided with a first electric connector (103);The separable power supply docking mechanism includes a second electric connector (3) connected with the power line (2);The first electric connector (103) is used in pairs with the second electric connector (3); When the second electric connector (3) is connected in pairs with the first electric connector (103), the ground power supply (6) is sequentially powered to the heavy-lift unmanned aerial vehicle (1) through the power line (2), second electric connector (3) and first electric connector (103). Further comprising a power supply docking unmanned aerial vehicle (5), and the second electric connector (3) is installed on the power supply docking unmanned aerial vehicle (5); When taking off, the power supply docking unmanned aerial vehicle (5) takes off together with the heavy-lift unmanned aerial vehicle (1);After taking off to a predetermined height, they are separated, the first electric connector (103) is separated from the second electric connector (3), the heavy-lift unmanned aerial vehicle (1) is powered by the on-board battery and continues to fly, and the power supply docking unmanned aerial vehicle (5) carries the second electric connector (3) and lands on the ground.

2. The heavy duty unmanned aerial vehicle assisted take-off system according to claim 1, wherein, The first electric connector (103) is a socket / plug, and the second electric connector (3) is a plug / socket matched with the socket / plug. Further comprising:

3. The heavy duty UAV boost take-off system according to claim 2, wherein, A docking module is used to lock and dock the power supply docking unmanned aerial vehicle (5) under the fuselage (101) of the heavy-lift unmanned aerial vehicle (1) in the take-off stage; A separation driving module is used to receive a separation signal and drive the docking module to unlock, so that the power supply docking unmanned aerial vehicle (5) is separated from the heavy-lift unmanned aerial vehicle (1).

4. The heavy duty UAV boost take-off system according to claim 3, wherein, An electric wire disconnecting device (4) is arranged on the heavy-lift unmanned aerial vehicle (1); 5. The heavy duty UAV boost take-off system according to claim 3, wherein, After take-off is completed, the electric wire disconnecting device (4) is started, the first electric connector (103) is separated from the second electric connector (3), the power line (2) and the second electric connector (3) fall to the ground under the action of gravity, and the heavy-lift unmanned aerial vehicle (1) enters cruising flight operation. The electric wire disconnecting device (4) is a rudder. The utility model relates to a kind of heavy-lift unmanned aerial vehicle (1), including fuselage (101), landing gear (102) being arranged on fuselage (101), flight control system and on-board battery;Power line (2), one end is connected to ground power supply (6), the other end is connected to a separable power supply docking mechanism;In the take-off stage, the separable power supply docking mechanism is electrically connected with the heavy-lift unmanned aerial vehicle (1), so that the ground power supply (6) is powered to the heavy-lift unmanned aerial vehicle (1) by the power line (2);After take-off is completed, the separable power supply docking mechanism is separated from the heavy-lift unmanned aerial vehicle (1), and the heavy-lift unmanned aerial vehicle (1) is powered by the on-board battery and carries out flight operation.

6. The heavy duty UAV boost take-off system according to claim 3, wherein, The utility model relates to a kind of heavy-lift unmanned aerial vehicle (1), including fuselage (101), landing gear (102) being arranged on fuselage (101), flight control system and on-board battery;Power line (2), one end is connected to ground power supply (6), the other end is connected to a separable power supply docking mechanism;In the take-off stage, the separable power supply docking mechanism is electrically connected with the heavy-lift unmanned aerial vehicle (1), so that the ground power supply (6) is powered to the heavy-lift unmanned aerial vehicle (1) by the power line (2);After take-off is completed, the separable power supply docking mechanism is separated from the heavy-lift unmanned aerial vehicle (1), and the heavy-lift unmanned aerial vehicle (1) is powered by the on-board battery and carries out flight operation. The utility model relates to a kind of heavy-lift unmanned aerial vehicle (1), including fuselage (101), landing gear (102) being arranged on fuselage (101), flight control system and on-board battery;Power line (2), one end is connected to ground power supply (6), the other end is connected to a separable power supply docking mechanism;In the take-off stage, the separable power supply docking mechanism is electrically connected with the heavy-lift unmanned aerial vehicle (1), so that the ground power supply (6) is powered to the heavy-lift unmanned aerial vehicle (1) by the power line (2);After take-off is completed, the separable power supply docking mechanism is separated from the heavy-lift unmanned aerial vehicle (1), and the heavy-lift unmanned aerial vehicle (1) is powered by the on-board battery and carries out flight operation.

7. The heavy duty UAV boost take-off system according to claim 6, wherein, ​ 8. A method for assisted take-off, using the heavy-load unmanned aerial vehicle assisted take-off system according to any one of claims 1 to 7, characterized in that, ​ ​ ​ Separation step: when the heavy-duty unmanned aerial vehicle (1) takes off to a predetermined height or completes the take-off phase, the detachable power supply docking mechanism is controlled to perform a separation operation to separate from the heavy-duty unmanned aerial vehicle (1); Cruise flight step: the heavy-duty unmanned aerial vehicle (1) is switched to be powered by an on-board battery after the power supply is disconnected, and flies to a task area to perform a work task.

9. The assisted takeoff method of claim 8, wherein, The detachable power supply docking mechanism includes a second electric connector (3) connected with the power supply line (2), and the second electric connector (3) is used in pairs with a first electric connector (103) of the heavy-duty unmanned aerial vehicle (1).

10. The assisted take-off method according to claim 9, characterized in that, Further comprising a power supply docking unmanned aerial vehicle (5), and the second electric connector (3) is fixed on the power supply docking unmanned aerial vehicle (5); In the take-off phase, the power supply docking unmanned aerial vehicle (5) is docked and locked below the heavy-duty unmanned aerial vehicle (1), the second electric connector (3) is docked with the first electric connector (103), and the power supply docking unmanned aerial vehicle (5) is taken off together with the heavy-duty unmanned aerial vehicle (1); After the take-off is completed, the power supply docking unmanned aerial vehicle (5) is controlled to be unlocked and separated from the heavy-duty unmanned aerial vehicle (1), and the power supply docking unmanned aerial vehicle (5) is controlled to autonomously land on the ground with the power supply line (2) and the second electric connector (3); Or, The heavy-duty unmanned aerial vehicle (1) is provided with an electric wire disconnecting device (4); After the take-off is completed, the electric wire disconnecting device (4) is controlled to act, so that the second electric connector (3) is separated from the first electric connector (103), and the power supply line (2) and the second electric connector (3) fall to the ground under the action of gravity.

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