WO2019227610A1

WO2019227610A1 - High-low voltage switching device, unmanned aerial vehicle and switching method therefor

Info

Publication number: WO2019227610A1
Application number: PCT/CN2018/095394
Authority: WO
Inventors: 欧阳兆昌
Original assignee: 珠海市双捷科技有限公司
Priority date: 2018-05-31
Filing date: 2018-07-12
Publication date: 2019-12-05
Also published as: CN108516096A; CN108516096B

Abstract

The present invention relates to the field of unmanned aerial vehicle and the invention provides a high-low voltage switching device, an unmanned aerial vehicle and a switching method therefor. The switching device is applied to a multiple-rotor unmanned aerial vehicle or a multiple-rotor tethered unmanned aerial vehicle. The switching device comprises a housing, a buckling component and a voltage transformation module; the buckling component is disposed on the housing; the buckling component includes a first buckle and a second buckle; a groove is formed at a free end of the first buckle; the second buckle is provided with a hook portion, and the hook portion is disposed at a free end of the second buckle; a tethering rope connecting hole and a voltage output interface are formed on the housing; the voltage transformation module is disposed in the housing; a tethering rope connecting end is disposed on the voltage transformation module; the voltage transformation module is connected with the voltage output interface; the tethering rope connecting hole is communicated with the tethering rope connecting end; and the opening of the groove faces towards the voltage output interface. With the adoption of the described structure, the switching device can be quickly mounted and dismounted; and by mounting or dismounting the device, switching between a tethering mode and a non-tethering mode of the unmanned aerial vehicle is implemented.

Description

High-low voltage switching device, unmanned aerial vehicle and switching method thereof

Technical field

The present invention is based on a Chinese patent with a patent number of 201810555977.8 and a name of "high and low voltage switching device, unmanned aerial vehicle and switching method thereof". The invention relates to the field of unmanned aerial vehicles, in particular to a high and low voltage switching device, unmanned aerial vehicle And its switching method.

Background technique

At present, the existing multi-rotor UAV uses batteries as a power source to drive the UAV to fly, and realizes the large-scale flight of the multi-rotor UAV. Due to the low battery storage capacity of the drone, the multi-rotor drone can only fly for a short time, which can only shorten the working time. If the multi-rotor drone is required to continue working, the battery can only be fully charged before Continue to work, causing some inconvenience. In order to realize the power supply of the multi-rotor drone, a decompression power source can be used on the multi-rotor drone to supply power to the drone through a tether, thereby increasing the flight time. However, the existing installation method of the decompression power supply is to use a plurality of screws to install the decompression power supply on the drone. The installation method is complicated, so that the disassembly method is also extremely complicated, which reduces the work efficiency.

technical problem

A first object of the present invention is to provide a high-low pressure switching device capable of achieving quick installation and disassembly.

A second object of the present invention is to provide a multi-rotor drone capable of quickly installing and removing a high-low pressure switching device.

A third object of the present invention is to provide a multi-rotor moored unmanned aerial vehicle capable of quickly installing and removing a high-low pressure switching device.

A fourth object of the present invention is to provide a method for switching between a drone tethered mode and a non-tethered mode.

Technical solutions

In order to achieve the above-mentioned first object, the high-low voltage switching device provided by the present invention includes a housing, a buckle assembly, and a transformer module. The buckle assembly is disposed on the housing, and the buckle assembly includes a first buckle and a second buckle. The second buckle and the first buckle are arranged on the same side of the casing, the second buckle is arranged above the first buckle, and the free end of the first buckle extends outward from the shell, and the first buckle A free end is provided with a groove, the free end of the second buckle is set away from the housing, a hook portion is provided on a side of the second buckle remote from the housing, and the hook portion is provided on the free end of the second buckle ; The casing is provided with a tether connection hole and a voltage output interface; the transformer module is disposed in the casing, and the transformer module is provided with a tether connection terminal; the transformer module is connected to the voltage output interface and the tether connection hole It communicates with the connecting end of the mooring rope, and the opening of the groove faces the voltage output interface.

A further solution is that a push block is further provided on a side of the second buckle away from the first buckle, and the push block drives the hooking portion to move. .

A further solution is that the buckle assembly and the voltage output interface are respectively located on two sides of the housing.

A further solution is that the transformer module includes a high-voltage input terminal, a first capacitor, a chopper module, an oscillator, a second capacitor, and a low-voltage output terminal. The high-voltage input terminal is connected to the first capacitor, and the first capacitor is connected to the chopper module. The chopper module is connected to the oscillator, the oscillator is connected to the second capacitor, and the second capacitor is connected to the low-voltage output terminal.

In a further solution, the chopper module includes a first clamp diode, a second clamp diode, a third clamp diode, a fourth clamp diode, and a winding. The first clamp diode is connected to the second clamp diode, and the first clamp The bit diode and the second clamp diode are respectively connected between the first end of the first capacitor and the second end of the first capacitor, the first end of the winding is connected to the first end of the first capacitor, and the second end of the winding is connected between The first clamp diode and the second clamp diode, the third clamp diode and the fourth clamp diode are respectively connected between the first terminal of the second capacitor and the second terminal of the second capacitor, and the third clamp The diode is connected to the fourth clamping diode, the third end of the winding is connected to the first end of the second capacitor, and the fourth end of the winding is connected between the third clamping diode and the fourth clamping diode.

A further solution is that a heat dissipation component is further provided in the housing. The heat dissipation component includes a plurality of heat sinks, and the plurality of heat sinks are arranged in parallel with each other. The distance between two adjacent heat sinks is the same, and two adjacent two heat sinks. The gap between the sheets communicates with the outside of the casing.

In order to achieve the above-mentioned second objective, the multi-rotor drone provided by the present invention includes a fuselage, a first blade assembly, a second blade assembly, two support pieces, a support rod, a high-low voltage switching device, a battery, and a control module. One end of the two support pieces is connected to the first paddle assembly, the other end of the two support pieces is connected to the fuselage, and the second paddle assembly is connected to the fuselage. The fuselage is provided with a first placement chamber, a battery and a control. The module is set in a first placement chamber, the battery is connected to the control module, and a second placement chamber is set between the two support pieces;

The high-low voltage switching device is the above-mentioned high-low voltage switching device;

The high-low pressure switching device is arranged in the second placement chamber. The support rod is connected between two support pieces. The support rod supports the high-low pressure switching device. The support rod is connected to the groove in cooperation. One of the support pieces is provided with a protruding block and a hook. The joint is connected with the protruding block in cooperation, and the voltage output interface is connected with the control module in the first placement chamber.

To achieve the third object described above, the present invention includes a multi-rotor drone and a tether. The multi-rotor drone includes a fuselage, a first blade assembly, a second blade assembly, two support pieces, and a support. Rod, high and low voltage switching device, battery and control module, one end of the two support pieces is connected to the first blade component, the other end of the two support pieces is connected to the fuselage, and the second blade component is connected to the fuselage. A first placement chamber is provided, the battery and the control module are disposed in the first placement chamber, the battery is connected to the control module, and a second placement chamber is provided between the two support pieces. The high-low voltage switching device is the above-mentioned high-low voltage switching device. The high-low pressure switching device is arranged in the second placement chamber. The support rod is connected between the two support pieces. The support rod supports the high-low pressure switching device. The support rod is connected to the groove in cooperation. One of the support pieces is provided with a protruding block. The hooking part is cooperatively connected with the protruding block, the voltage output interface is connected with the control module in the first placement chamber, and the mooring rope passes through the mooring rope connection hole and is connected with the transformer module.

To achieve the fourth object, the present invention provides a method for switching a drone working module. The drone is the above-mentioned multi-rotor drone. The switching method includes a tethering mode switching step. The tethering mode switching step includes:

A high and low voltage switching device is placed in the first placement chamber, the voltage output interface is connected to the control module, the first buckle is connected to the supporting rod in cooperation, and the second buckle is connected to the raised block in cooperation;

A mooring rope is penetrated in the mooring rope connection hole, a first end of the mooring rope is connected to the mooring rope connection end, and a second end of the mooring rope is connected to a ground power source.

In order to achieve the fourth object, the present invention also provides a method for switching a UAV working module. The UAV is a multi-rotor tethered drone as described above. The switching method includes a non-tethered mode switching step and a non-tethered mode. The switching steps include:

Driving the second buckle out of the protruding block;

Drive the high and low voltage switching device to move, disengage the first buckle from the support rod, and disconnect the voltage output interface from the control module;

Install the battery and connect the battery to the control module.

Beneficial effect

The transformer module in the high and low voltage switching device realizes the switching of the voltage. When the battery of the multi-rotor drone runs out of power, the mooring rope is connected through the high and low voltage switching device. The high voltage power is provided by the mooring box. The high and low voltage switching device will The high-voltage power supply is switched to a low-voltage power supply suitable for the multi-rotor drone, so that the multi-rotor drone continues to fly in a moored state, improving the convenience of use; and it needs to be performed when the multi-rotor drone is in a mooring mode. For a larger range of flight, the high and low voltage switching device on the multi-rotor drone can be removed, and the drone can be powered by installing a battery, so as to switch between the tethering mode and the tethering mode of the multi-rotor drone. Improve the multi-role application of multi-rotor drones; the opening of the groove on the first buckle on the buckle assembly on the high and low voltage switching device faces the voltage output interface, and the groove is cooperatively connected with the support rod on the drone, and The hooking part is connected with the protruding block on the drone so that when the high-low pressure switching device is installed, the high-low pressure switching device can be moved in one direction to complete the high-low pressure switching device. The installation of the pressure switching device does not require the cooperation of multiple directions to adjust the installation position of the switching device. When the high-low pressure switching device is pushed, the hook portion and the protruding block automatically form a cooperative connection state, and during the disassembly process, the driving is first performed. The hooking part is separated from the protruding block, and then the high-low pressure switching device is pushed, so that the high-low pressure switching device can be disassembled, which is very simple and convenient.

Furthermore, when disassembling the high-low pressure switching device from the drone, a force is applied to the pushing block, so that the movement of the pushing block drives the free end of the second buckle to move, thereby disengaging the hook portion on the second buckle. The raised block on the drone enables disassembly of the high and low voltage switching device.

At the same time, the buckle component and the voltage output interface are located on both sides of the housing. While the voltage output interface is connected to the control module on the drone, it can ensure that the snap component is fully connected to the drone, making the high and low voltage switching device Able to mount on the drone firmly.

In addition, the chopper circuit and oscillator in the transformer module convert the high-voltage power source into a low-voltage power source, which is suitable for the use of multi-rotor drones.

Furthermore, the heat sink is used to enhance the heat dissipation effect of the switching device, and can increase the operating time of the switching device.

In addition, a battery is provided on the multi-rotor drone. The battery can be used as a power source to power the drone to achieve the flight of the multi-rotor drone. When the battery runs out of power, a tether can be used to connect through the tether. After the hole is connected to the connection end of the mooring rope, the voltage is provided by the power supply in the mooring box on the ground, and the switching device realizes the voltage switching, which enables the multi-rotor drone to achieve sustainable flight and improve work convenience; voltage output interface and control The module is connected, the opening of the groove is facing the voltage output interface, and the hooking part is connected with the protruding block, so that when the high-low voltage switching device is installed, the installation of the switching device can be completed by moving the high-low voltage switching device in one direction without The two directions coordinate with each other to adjust the installation position of the switching device. When the high-low pressure switching device is pushed, the hooking portion and the protruding block automatically form a cooperative connection state, and during the disassembly process, the hooking portion is driven away from the protruding block first. , And then push the high and low voltage switching device, you can achieve the removal of the high and low voltage switching device, very simple and convenient.

In addition, when a tethered drone needs to achieve a larger range of flight missions during work, the tether can be disconnected from the switching device, so that the drone is in a non-tethered state, and the battery is used as a power source. UAV power, to achieve drone flight, thereby improving the convenience of drone work.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a structural diagram of an embodiment of a multi-rotor drone of the present invention.

FIG. 2 is a structural diagram of an embodiment of a high-low voltage switching device according to the present invention.

FIG. 3 is an enlarged view at FIG. 1A.

4 is a circuit diagram of a transformer module in an embodiment of a high-low voltage switching device according to the present invention.

FIG. 5 is a circuit diagram of a chopper module in the embodiment of the high-low voltage switching device of the present invention.

6 is a structural diagram of an embodiment of a multi-rotor tethered drone of the present invention.

The invention is further described below with reference to the drawings and embodiments.

Embodiments of the invention

The high and low voltage switching device of the present invention is applied to a multi-rotor drone and a tethered drone, and the switching between the tethered mode and the non-tethered mode of the drone is realized by the switching device. The opening of the groove faces the voltage output interface, so when installing the high and low voltage switching device, it is only necessary to push the switching device toward the drone, and the installation can be completed without adjusting and coordinating in multiple directions. In this case, the switching device can be disassembled simply by driving the switching device in a direction away from the drone, which is simple and convenient.

Referring to FIG. 1, the multi-rotor drone 1 of the present invention includes a fuselage 11, a first blade assembly 12, a second blade assembly 13, two support pieces 14, a support rod 15, a high-low voltage switching device 2, a battery, and For the control module, one end of the two support pieces 14 is connected to the first blade assembly 12, the other end of the two support pieces 14 is connected to the fuselage 11, and the second blade assembly 13 is connected to the fuselage 11. In this embodiment, each of the first blade assembly 12 and the second blade assembly 13 includes two blade support rods 16. A free end of the blade support rod 16 is provided with a motor 17 and a blade 18 connected to the motor 17. . The fuselage 11 is provided with a first placement chamber 19. The battery and the control module are disposed in the first placement chamber 19. The battery is connected to the control module. A second placement chamber 10 is disposed between the two support pieces 14. The high-low pressure switching device 2 is disposed in the second placement chamber 10, and the support rod 15 is connected between the two support pieces 14. The support rod 15 supports the high-low pressure switching device 2. In this embodiment, the two support pieces 14 are A raised block 141 is provided.

Referring to FIGS. 2 and 3, the high-low voltage switching device 2 includes a casing 21, a buckle assembly 22, and a transformer module. The buckle assembly 22 is disposed on the casing 21, and the transformer module is disposed in the casing 21. The casing 21 is disposed in the first placement chamber 19. The buckle assembly 22 includes a first buckle 221 and a second buckle 222, the first buckle 221 and the second buckle 222 are disposed on the same side of the housing 21, and the second buckle 222 is disposed on the first buckle 221 Above, the free end of the first buckle 221 extends from the housing 21 toward the support rod 15, and a groove 2211 is provided on the free end of the first buckle 221, and the groove 2211 is cooperatively connected with the support rod 15. The free end of the second buckle 222 is disposed away from the housing 21, and the hooking portion 2221 is provided on a side of the second buckle 222 away from the housing 211. The hooking portion 2221 is disposed on the free end of the second buckle 222. The hooking portion 2221 on the second buckle 222 is cooperatively connected with the protruding block 141. The setting of the second buckle 222 enhances the stability of the switching device 2 on the drone, and the free end of the second buckle 222 is set away from the housing 21. , So that the free end of the second buckle 222 is closer to the protruding block 141, and it is easier to realize the cooperative connection between the hooking portion 2221 and the protruding block 141. In the present embodiment, the hooking portion 2221 is provided with a first inclined surface 1411, and the protruding block 141 is provided with a second inclined surface 2222. During the installation of the switching device 2, the first inclined surface 1411 is along the second inclined surface. 2222 moves in the oblique direction. The second buckle 222 is also provided with a pushing block 23, which drives the hooking portion 2221 to move the high-low pressure switching device 2 from the drone, and applies a force to the pushing block 23 to make the pushing block 23 The movement drives the free end of the second buckle 222 to move, thereby disengaging the hooking portion 2221 on the second buckle 222 from the protruding block 141 on the drone, thereby disassembling the switching device 2. In this embodiment, the high-low voltage switching device 2 includes two sets of snap assemblies 22, which are respectively disposed on both sides of the housing 21, and the hook portions 2221 of the two sets of snap assemblies 22 and The protruding blocks 141 on the two supporting pieces 14 are cooperatively connected.

The casing 21 is provided with a tethered rope connection hole 24 and a voltage output interface 25. The transformer module is provided in the casing 21. The transformer module is provided with a tethered rope connection end. The transformer module is connected to the voltage output interface 25. The voltage output interface 25 is connected to the control module in the first placement chamber 19, and the tether rope connection hole 24 is in communication with the tether rope connection end. The opening of the groove 2211 faces the voltage output interface 25. The tether connection hole 24 is used to complete the connection between the casing 21 and the tether; the transformer module is used to convert the high voltage transmitted by the tether to a low voltage, and the tether connection end on the transformer module is used to connect the tether. The mooring rope connection hole 24 is in communication with the mooring rope connection end to realize high-voltage input. The transformer module is connected to the voltage output interface 25, and the voltage output interface 25 is connected to the control module on the drone, so as to realize the low-voltage output of the switching device 2.

In this embodiment, the voltage output interface 25 is connected to the control module in the first placement chamber 19, and the opening of the groove 2211 of the first buckle 221 faces the voltage output interface 25. During the installation of the switching device 2, the voltage The output interface 25 moves toward the first placement chamber 19 and enters the first placement chamber 19 to connect with the control module. The groove 2211 is connected to the support rod 15 in a cooperative manner. The hook portion 2221 and the protrusion on the second buckle 222 The block 141 automatically forms a snap state under the cooperation of two inclined surfaces, so that during the installation process, only the driving switching device 2 needs to be driven to move in one direction to complete the installation, without the need for multiple directions of movement for adjustment and coordination, and the operation is simple ,Convenient. During the disassembly process, the push block is driven to move the free end of the second buckle 222, disconnect the connection between the hook portion 2221 and the protruding block 141, and then drive the switching device 2 to move away from the first placement chamber 19, The disassembly of the switching device 2 can be completed, and the operation is simple, convenient and fast.

In this embodiment, the buckle assembly 22 and the voltage output interface 25 are respectively located on both sides of the housing 21, so that when the voltage output interface 25 is connected to the control module on the drone, the switching device 2 is sufficient. The space guarantees that the buckle assembly 22 is fully connected to the drone, so that the switching device 2 can be stably installed on the drone. The buckle assembly 22 can also be disposed away from the voltage output interface 25, so that the end of the switching device 2 provided with the voltage output interface 25 is disposed in the first placement chamber 19, and the end of the switching device that is far from the voltage output structure is supported by a support rod. 15 supports, making the installation of the switching device 2 on the drone more stable.

4 and 5, the transformer module includes a high-voltage input terminal, a first capacitor C1, a chopper module 27, an oscillator 28, a second capacitor C2, and a low-voltage output terminal. The high-voltage input terminal is connected to the first capacitor C1. The capacitor C1 is connected to the chopper module 27, the chopper module 27 is connected to the oscillator 28, the oscillator 28 is connected to the second capacitor C2, and the second capacitor C2 is connected to the low-voltage output terminal. The chopper module 27 includes a first clamping diode S1, a second clamping diode S2, a third clamping diode S3, a fourth clamping diode S4, and a winding Tr. The first clamping diode S1 is connected to the second clamping diode S2. The first clamping diode S1 and the second clamping diode S2 are respectively connected between the first terminal of the first capacitor C1 and the second terminal of the first capacitor C1, and the first terminal of the winding Tr is connected to the first terminal of the first capacitor C1. Terminal, the second terminal of the winding Tr is connected between the first clamping diode S1 and the second clamping diode S2, and the third clamping diode S3 and the fourth clamping diode S4 are respectively connected to the first terminal of the second capacitor C2 Between the second terminal of the second capacitor C2, the third clamping diode S3 is connected to the fourth clamping diode S4, the third terminal of the winding Tr is connected to the first terminal of the second capacitor C2, and the fourth terminal of the winding Tr is connected. Between the third clamping diode S3 and the fourth clamping diode S4. The chopper module 27 and the oscillator 28 in the transformer module convert the high-voltage power source into a low-voltage power source, which is suitable for the use of the multi-rotor drone 1. In this embodiment, the first capacitor C1 is a high-voltage capacitor, and the second capacitor C2 is a filter capacitor. The transformer module in the switching device 2 switches the voltage level. When the battery of the multi-rotor drone 1 runs out, connect the mooring rope through the switching device 2 and provide high voltage power from the mooring box. The switching device 2 will switch the high voltage power. Switch to a low-voltage power source suitable for multi-rotor drone 1, so that the multi-rotor drone 1 continues to fly in a moored state, improving the convenience of use; and when the multi-rotor drone 1 is in the mooring mode, it is necessary to For a larger flight, the switching device 2 on the multi-rotor drone 1 can be removed, and the drone can be powered by installing a battery, thereby achieving the mooring mode and the mooring mode of the multi-rotor drone 1. The switching of the multi-rotor UAV 1 improves the multi-occupation application.

The housing 21 is also provided with a heat dissipation component 26. The heat dissipation component 26 includes a plurality of heat sinks 261, and the plurality of heat sinks 261 are arranged in parallel with each other. The distance between two adjacent heat sinks 261 is the same, The gap between the fins 261 communicates with the outside of the casing 21. The fins 2617 are used to enhance the heat dissipation effect of the switching device 2 and increase the operating time of the switching device 2. In order to further enhance the heat dissipation effect of the switching device 2, a cooling fan may be installed in the switching device 2.

Referring to FIG. 6, the multi-rotor tethered drone of the present invention includes a multi-rotor drone 1 and a tethered rope 3. The multi-rotor tethered drone is the multi-rotor drone 1 and the tethered rope 3 of this embodiment. After passing through the tether connection hole 24, it is connected to the transformer module. When the tethered drone needs to achieve a larger range of flight missions during work, the tether 3 and the switching device 2 can be disconnected, and the battery and the control module can be connected, so that the battery can be used as a power source for the drone. Power to achieve the flight of the drone, thereby improving the convenience of the drone.

The UAV working module switching method of the present invention, the UAV is the above-mentioned multi-rotor UAV, the switching method includes a tethering mode switching step, and the tethering mode switching step includes:

By installing a high- and low-voltage switching device on the multi-rotor drone, and connecting a tethered rope to the high- and low-voltage switching device, and connecting the tethered rope to the ground power source, the non-tethered mode of the multi-rotor drone is switched to the tethered mode.

According to the method for switching a drone working module of the present invention, the drone is the above-mentioned multi-rotor tethered drone, and the switching method includes a non-tethered mode switching step. The non-tethered mode switching step includes:

Driving the second buckle out of the protruding block;

Install the battery and connect the battery to the control module.

By removing the high-low voltage switching device from the multi-rotor tethered drone, and installing a battery, the drone is powered by the battery to provide power, so that the drone's tethered mode is switched to the non-tethered mode.

Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Within the principle, any modification, equivalent replacement, improvement, etc. made should be included in the protection scope of the present invention.

Industrial applicability

The invention is used for multi-rotor unmanned aerial vehicle and its working mode switching method, multi-rotor tethered unmanned aerial vehicle and its working mode switching method. The present invention realizes the switching of the voltage through the transformer module in the high and low voltage switching device. When the battery of the multi-rotor drone runs out, connect the mooring rope through the high and low voltage switching device, and the high voltage power is provided by the mooring box. The high and low voltage switching device switches the high voltage power to a low voltage power supply suitable for the multi rotor UAV. As a result, the multi-rotor drone continues to fly in a tethered state, improving the convenience of use; and when the multi-rotor drone is in the tethered mode, a larger range of flight is required, which can reduce the height of the multi-rotor drone. The low-voltage switching device is removed, and the drone is powered by installing a battery, so that the tethering mode and the tethering mode of the multi-rotor drone can be switched, which improves the multi-occupation application of the multi-rotor drone. The opening of the groove on the first buckle on the upper buckle assembly faces the voltage output interface, and the groove is cooperatively connected with the support rod on the drone, and the hook The unit is connected to the protruding block on the drone, so that when installing the high and low voltage switching device, the high and low voltage switching device can be installed by simply moving the high and low voltage switching device in one direction, without the need to cooperate with each other to adjust the switching device. In the installation position, when the high-low pressure switching device is pushed, the hooking portion and the protruding block automatically form a cooperative connection state, and during the disassembly process, the hooking portion is first driven away from the protruding block, and then the high-low pressure switching device is pushed, that is, The disassembly of the high and low voltage switching device can be realized, which is very simple and convenient.

Claims

The high and low voltage switching device for a drone is characterized in that the high and low voltage switching device includes a housing, a buckle assembly and a transformer module, and the buckle assembly is disposed on the housing, and the buckle The assembly includes a first buckle and a second buckle, the second buckle and the first buckle are disposed on the same side of the housing, and the second buckle is disposed on the first buckle Above, the free end of the first buckle extends outward from the housing, a groove is provided on the free end of the first buckle, and the free end of the second buckle is far from the housing It is provided that a hook portion is provided on a side of the second buckle remote from the housing, and the hook portion is provided on a free end of the second buckle;

The casing is provided with a tether connection hole and a voltage output interface;

The transformer module is disposed in the housing, and the transformer module is provided with a tethered rope connection end. The transformer module is connected to the voltage output interface, and the tethered rope connection hole is connected to the system. The connecting end of the cord is communicated, and the opening of the groove faces the voltage output interface.
The high-low voltage switching device according to claim 1, wherein:

A pushing block is further provided on a side of the second buckle remote from the first buckle, and the pushing block drives the hooking portion to move.
The high-low voltage switching device according to claim 2, characterized in that:

The buckle assembly and the voltage output interface are respectively located on two sides of the casing.
The high-low voltage switching device according to claim 3, wherein:

The transformer module includes a high-voltage input terminal, a first capacitor, a chopper module, an oscillator, a second capacitor, and a low-voltage output terminal. The high-voltage input terminal is connected to the first capacitor, and the first capacitor is connected to the first capacitor. A chopper module is connected, the chopper module is connected to the oscillator, the oscillator is connected to the second capacitor, and the second capacitor is connected to the low-voltage output terminal.
The high-low voltage switching device according to claim 4, characterized in that:

The chopper module includes a first clamping diode, a second clamping diode, a third clamping diode, a fourth clamping diode, and a winding. The first clamping diode is connected to the second clamping diode. A first clamp diode and the second clamp diode are respectively connected between a first end of the first capacitor and a second end of the first capacitor, and a first end of the winding is connected to the first The first end of the capacitor, the second end of the winding is connected between the first clamping diode and the second clamping diode, and the third clamping diode is connected to the fourth clamping diode, respectively. Between the first end of the second capacitor and the second end of the second capacitor, the third clamping diode is connected to the fourth clamping diode, and the third end of the winding is connected to the The first end of the second capacitor and the fourth end of the winding are connected between the third clamp diode and the fourth clamp diode.
The high-low voltage switching device according to claim 5, characterized in that:

A heat dissipation component is also provided in the housing. The heat dissipation component includes a plurality of heat sinks, and the plurality of heat sinks are arranged in parallel with each other. The distance between two adjacent heat sinks is the same. The gap between the two fins communicates with the outside of the casing.
The multi-rotor UAV is characterized in that the multi-rotor UAV includes a fuselage, a first blade assembly, a second blade assembly, two support pieces, a support rod, a high-low voltage switching device, a battery, and a control module. One end of two pieces of the support piece are respectively connected to the first blade assembly, the other end of the two pieces of the support piece are respectively connected to the fuselage, and the second blade component is connected to the fuselage, the fuselage A first placement chamber is provided on the top, the battery and the control module are disposed in the first placement chamber, the battery is connected to the control module, and a second placement is provided between the two support pieces. Chamber;

The high-low voltage switching device is the high-low voltage switching device according to any one of claims 1 to 6;

The high-low pressure switching device is disposed in the second placement chamber, the support rod is connected between two pieces of the support piece, the support rod supports the high-low pressure switching device, and the support rod and the The groove is mated and connected, and one of the supporting pieces is provided with a protruding block, the hooking portion is cooperatively connected with the protruding block, and the voltage output interface is connected with the control module in the first placement chamber. .
The multi-rotor tethered drone is characterized in that the multi-rotor tethered drone includes a multi-rotor drone and a tether, and the multi-rotor drone includes a fuselage, a first blade assembly, a first Two paddle components, two support pieces, support rods, high and low voltage switching devices, batteries, and control modules. One end of the two support pieces is connected to the first blade component, and the other end of the two support pieces. Respectively connected to the fuselage, the second paddle assembly is connected to the fuselage, a first placement chamber is disposed on the fuselage, and the battery and the control module are disposed in the first placement chamber The battery is connected to the control module, and a second placement chamber is provided between the two supporting pieces. The high-low voltage switching device is the high-low voltage switching device according to any one of claims 1 to 6. The high-low pressure switching device is disposed in the second placement chamber, the support rod is connected between two pieces of the support piece, the support rod supports the high-low pressure switching device, and the support rod and the recess Slot fit connection, one of the supporting pieces A protruding block is arranged, the hooking portion is connected to the protruding block in a cooperative manner, the voltage output interface is connected to the control module in the first placement chamber, and the mooring rope passes through the system. The rope connection hole is connected with the transformer module.
A drone operating mode switching method, characterized in that the drone is the multi-rotor drone described in claim 7, the switching method includes a tethered mode switching step, and the tethered mode switching step include:

The high-low voltage switching device is placed in the first placement chamber, the voltage output interface is connected to the control module, the first buckle is cooperatively connected with the support rod, and the second buckle is connected with the support rod. The convex block cooperates with the connection;

A mooring rope is penetrated in the mooring rope connection hole, a first end of the mooring rope is connected to the mooring rope connection end, and a second end of the mooring rope is connected to a ground power source.
A method for switching the working mode of an unmanned aerial vehicle, wherein the unmanned aerial vehicle is a multi-rotor tethered unmanned aerial vehicle described in claim 8, and the switching method includes a non-tethered mode switching step. The steps of switching the stay mode include:

Driving the second buckle away from the protruding block;

Driving the high-low voltage switching device to move, disengaging the first buckle from the support rod, and disconnecting the voltage output interface from the control module;

The battery is installed, and the battery is connected to the control module.