Automatic switching device for backup battery of unmanned aerial vehicle and unmanned aerial vehicle

Abstract

The present invention proposes an automatic switching device for a backup battery of an unmanned aerial vehicle, which is installed inside the body of an unmanned aerial vehicle with a control panel and a backup battery. The device includes a mounting frame and a switching mechanism. The mounting frame is provided with a battery cavity and a drive cavity. The backup battery is loaded in the battery cavity. The mounting frame is also provided with a switch electrically connected to the backup battery. The switching mechanism includes a driving assembly and a trigger. The trigger can be movably arranged in the driving cavity and is designed corresponding to the switch. The driving assembly is electrically connected to the control panel, and the driving assembly is arranged beside the trigger and is drivingly connected to the trigger. When the control panel is powered on, the driving assembly drives the trigger away from the switch. After the control panel is powered off, the driving assembly drives the trigger to quickly approach and contact the switch, thereby starting the backup battery to supply power to the control panel. The present invention also mentions an unmanned aerial vehicle equipped with the automatic switching device.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicle protection, and in particular to an automatic switching device for backup batteries of unmanned aerial vehicles and a unmanned aerial vehicle. Background Art

[0002] Unmanned aircraft, also known as drones, are unmanned aircraft that are mainly controlled by radio remote control or its own program. Drones can be divided into two categories from the perspective of endurance: ordinary drones that use their own batteries as power supply terminals for endurance; and tethered drones that are connected to the air through a wire from the ground, that is, using a power supply installed on the ground as a power supply terminal for endurance.

[0003] The battery capacity of ordinary drones is generally small, and there is a possibility that the battery will be suddenly damaged during the flight, causing the drone to crash; and tethered drones may also be suddenly powered off on the ground, causing them to crash; for this reason, small-capacity and lightweight drone backup batteries have appeared on the market. When the drone encounters an emergency and loses power, the backup battery starts to provide emergency power to the drone for the drone to land safely.

[0004] At present, the backup battery needs to be used in the following way: a remote control switch is installed inside the drone, and the backup battery is started by remote control to supply power when the drone is powered off; however, since it is impossible for the user to observe the drone at all times during use, and in the event of an accident, the user may be too slow to react and fail to start the backup battery in time.

[0005] Therefore, the market has adopted a method of parallel backup batteries. However, after the backup batteries are connected in parallel, the backup batteries are always electrically connected to the control board inside the drone, which can easily damage the backup batteries. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] To solve the above problems, the present invention provides an automatic switching device for a backup battery of a drone and a drone, which can protect the backup battery when the drone is navigating normally; when an accident occurs to the drone and a power outage occurs, the backup battery can be quickly started to power the drone.

[0008] (II) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A device for automatically switching a backup battery of an unmanned aerial vehicle is installed inside a body of an unmanned aerial vehicle with a control panel and a backup battery, and the device for automatically switching a backup battery of an unmanned aerial vehicle comprises a mounting frame and a switching mechanism; the mounting frame is arranged inside the unmanned aerial vehicle, the mounting frame is provided with a battery cavity and a driving cavity, the backup battery is loaded in the battery cavity, and the mounting frame is also provided with a switch electrically connected to the backup battery; the switching mechanism comprises a driving assembly and a triggering member, the triggering member can be movably arranged in the driving cavity and is designed corresponding to the switching member; the driving assembly is electrically connected to the control panel, and the driving assembly is arranged beside the triggering member and is drivingly connected to the triggering member; when the control panel is powered on, the driving assembly drives the triggering member away from the switch member; after the control panel is powered off, the driving assembly drives the triggering member to quickly approach and contact the switch member, thereby starting the backup battery to supply power to the control panel;

[0011] A baffle is provided in the driving cavity to divide the driving cavity into an isolation cavity and an active cavity, and the driving assembly includes a solenoid valve, a pass electromagnet and an elastic member; the solenoid valve is installed in the isolation cavity, the pass electromagnet and the elastic member are installed in the active cavity, and the solenoid valve is electrically connected to the control board and the pass electromagnet respectively; a magnetic suction block is provided on the trigger member corresponding to the pass electromagnet, the elastic member is located between the baffle and the trigger member, and one end of the elastic member abuts against the trigger member, and the other end abuts against the baffle;

[0012] A mounting block is provided in the movable cavity, and a guide hole is provided on the mounting block; the trigger member comprises a first plate, a second plate and a guide rod, and the two ends of the guide rod are fixedly connected to the first plate and the second plate respectively; the guide rod is slidably installed in the guide hole, the magnetic block is installed on the first plate, one end of the elastic member abuts against the first plate, and the other end abuts against the baffle; a trigger block is provided on the second plate;

[0013] There are at least two guide holes, and the guide rods are arranged corresponding to the guide holes;

[0014] A sleeve is provided on the baffle plate, a top column is provided on the first plate corresponding to the sleeve, and the top column is slidably installed in the sleeve; the elastic member is detachably installed in the sleeve, and one end of the elastic member is against the bottom wall of the sleeve, and the other end is against the end of the top column.

[0015] Preferably, the elastic member is a spring.

[0016] Preferably, the spring is made of elastic plastic material.

[0017] Preferably, the switch member is a touch switch, the end of the trigger block in contact with the touch switch is provided with a convex head, the trigger block is made of rubber, and the inside of the trigger block is hollow.

[0018] A drone comprises a body, a rotor, a main battery, a control panel and a backup battery, and also comprises an automatic switching device for the backup battery of the drone, wherein the main battery, the control panel and the backup battery are all arranged inside the body, and the main battery and the backup battery are both electrically connected to the control panel and can respectively supply power to the control panel; the control panel is electrically connected to the rotor and a driving component of the automatic switching device for the backup battery of the drone; after the main battery is powered off, the control panel stops supplying power to the driving component, thereby causing the driving component to operate and driving the trigger component to contact the switch component, so as to start the backup battery to continue supplying power to the control panel.

[0019] Preferably, a first cabin, a second cabin and a third cabin are provided inside the body, and the first cabin, the second cabin and the third cabin are isolated from each other, the control panel is installed in the first cabin, the main battery is installed in the second cabin, and the backup battery and the automatic switching device for the backup battery of the drone are both arranged in the third cabin.

[0020] (III) Beneficial effects

[0021] The present invention provides an automatic switching device for a backup battery of an unmanned aerial vehicle. A driving component electrically connected to a control panel is designed to detect the power-on state of the control panel in real time, so as to determine the activation of the backup battery according to the state of the control panel. When the control panel is in the power-on state connected to the power supply terminal, since the trigger component is far away from the switch component, the backup battery is not activated, that is, the backup battery is disconnected from the control panel of the unmanned aerial vehicle, which can protect the backup battery and extend the service life of the backup battery. When the control panel is powered off, since the transmission speed of the power-off signal is relatively fast, when an accident occurs in the unmanned aerial vehicle and the control panel is powered off, the driving component can respond quickly, drive the trigger component to contact the switch component connected to the backup battery, and activate the backup battery in time to supply power to the control panel of the unmanned aerial vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 The overall structure of the UAV of the present invention is shown;

[0024] Figure 2 A partial structural schematic diagram of the drone of the present invention is shown;

[0025] Figure 3Shows Figure 2 A cross-sectional view of

[0026] Figure 4 The internal structure of the UAV of the present invention is shown in FIG1;

[0027] Figure 5 The second schematic diagram of the internal structure of the drone of the present invention is shown;

[0028] Figure 6 Shows Figure 5 The enlarged view of point A in the middle;

[0029] Figure 7 Schematic diagram 3 of the internal structure of the drone of the present invention is shown;

[0030] Figure 8 A schematic diagram showing the structure of the switching mechanism and the backup battery of the present invention is shown;

[0031] Fig. 9 Shows Figure 8 Schematic diagram of the decomposition of

[0032] Fig.10 The overall structural schematic diagram of the switching mechanism of the present invention is shown;

[0033] Fig.11 A cross-sectional view of a switching mechanism of the present invention is shown;

[0034] Fig.12 A schematic diagram showing the structure of the trigger member of the present invention is shown;

[0035] Fig.13 Shows Fig.12 A cross-sectional view of

[0036] Fig.14 An exploded schematic diagram showing the overall structure of the switching mechanism of the present invention;

[0037] Fig.15 Shows Fig.14 Enlarged view of point B in the middle.

[0038] In the figure: 1 mounting frame, 10 switch member, 11 battery cavity, 110 mounting hole, 12 driving cavity, 120 baffle, 120a sleeve, 121 isolation cavity, 122 movable cavity, 123 mounting block, 1230 guide hole, 2 switching mechanism, 21 driving assembly, 211 solenoid valve, 212 electromagnet, 213 elastic member, 22 trigger member, 221 first plate, 221a top column, 222 second plate, 223 guide rod, 22a magnetic block, 22b trigger block, 22b0 convex head, W0 body, W01 first cabin, W02 second cabin, W03 second cabin, W1 control board, W2 backup battery, W3 rotor, W4 main battery, Q1 blocking switch, Q2 charging connector, K card block. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See attached Figure 1 -Attached Fig.15 , an automatic switching device for a backup battery of an unmanned aerial vehicle is installed inside a body W0 of an unmanned aerial vehicle with a control panel W1 and a backup battery W2, and the automatic switching device for the backup battery of the unmanned aerial vehicle includes a mounting frame 1 and a switching mechanism 2; the mounting frame 1 is arranged inside the unmanned aerial vehicle, and is provided with a battery cavity 11 and a driving cavity 12 on the mounting frame 1, and the backup battery W2 is loaded in the battery cavity 11, and the mounting frame 1 is also provided with a switch member 10 electrically connected to the backup battery W2; the switching mechanism 2 includes a driving component 21 and a trigger member 22, and the trigger member 22 can be movably arranged in the driving cavity 12 and is designed corresponding to the switch member 10; the driving component 21 is electrically connected to the control panel W1, and the driving component 21 is arranged beside the trigger member 22 and is drivingly connected to the trigger member 22.

[0041] It should be noted that in a drone with a control panel W1 and a backup battery W2, a power supply terminal is generally connected separately. In particular, in a tethered drone, the power supply terminal is a power supply on the ground, and in an ordinary drone, the power supply terminal is the main battery W4. In addition, the backup battery W2 in the present invention has its own controller (not shown in the accompanying drawings), and is connected to the switch element 10 through the controller. The backup battery can only be started by pressing the switch element 10 and the current of the backup battery is conducted to the control panel W1 through a wire. The principle is similar to that of a portable power bank, which is a prior art. The control panel W1 is also a prior art, so no redundant description is made in the present invention regarding the relevant circuit structure.

[0042] Specifically, under normal circumstances, the backup battery W2 is in a closed state, and the power supply terminal supplies power to the control board W1 to maintain the endurance of the drone. At this time, the control board W1 supplies power to the drive component 21 to drive the trigger component 22 away from the switch component 10 through the drive component 21; when an accident occurs to the drone, causing the power supply terminal to be unable to supply power to the control board W1 in time, that is, when the control board W1 is powered off, the control board W1 stops supplying power to the drive component 21, and the drive component 21 can drive the trigger component 22 to quickly approach and contact the switch component 10, thereby starting the backup battery W2 to supply power to the control board W1 to continue to maintain the endurance of the drone.

[0043] In summary, the automatic switching device for the backup battery of the drone is designed with a driving component 21 electrically connected to the control board W1, which is used to detect the power-on state of the control board W1 in real time, so as to determine the start-up of the backup battery W2 according to the state of the control board W1; when the control board W1 is in the power-on state connected to the power supply terminal, since the trigger component 22 is far away from the switch component 10, the backup battery W2 is not started, that is, the backup battery W2 is disconnected from the control board W1 of the drone, which can protect the backup battery W2 and extend the service life of the backup battery W2; and when the control board W1 is powered off, since the transmission speed of the power-off signal is relatively fast, when an accident occurs in the drone and the control board W1 is powered off (excluding damage to the control board W1 itself), the driving component 21 can react quickly, drive the trigger component 22 to contact the switch component 10 connected to the backup battery W2, and start the backup battery W2 in time to power the control board W1 of the drone.

[0044] See attached Fig. 9 -Attached Fig.11 A baffle 120 is provided in the driving chamber 12 to divide the driving chamber 12 into an isolation chamber 121 and an active chamber 122. The driving assembly 21 includes a solenoid valve 211, a pass electromagnet 212 and an elastic member 213; the solenoid valve 211 is installed in the isolation chamber 121, the pass electromagnet 212 and the elastic member 213 are installed in the active chamber 122, and the solenoid valve 211 is electrically connected to the control board W1 and the pass electromagnet 212 respectively; a magnetic block 22a is provided on the trigger member 22 corresponding to the pass electromagnet 212, the elastic member 213 is located between the baffle 120 and the trigger member 22, and one end of the elastic member 213 abuts against the trigger member 22, and the other end abuts against the baffle 120.

[0045] Specifically, in order to enable the trigger member 22 to move smoothly in the active cavity 122, a mounting block 123 is provided in the active cavity 122, and a guide hole 1230 is provided on the mounting block 123; the trigger member 22 includes a first plate 221, a second plate 222 and a guide rod 223, and the two ends of the guide rod 223 are respectively fixedly connected to the first plate 221 and the second plate 222; the guide rod 223 is slidably installed in the guide hole 1230, the magnetic block 22a is installed on the first plate 221, one end of the elastic member 213 is against the first plate 221, and the other end is against the baffle 120; a trigger block 22b is provided on the second plate 222.

[0046] During the use of the drone, the solenoid valve 211 is electrically connected to the control board W1 to detect the power-on state of the control board W1; when the control board W1 is powered on, the solenoid valve 211 is powered on, and then the power supply to the electromagnet 212 is supplied, so that the electromagnet 212 has magnetism, and then the magnetic block 22a installed on the first plate 221 is mutually attracted to drive the slide bar to move along the positive direction of the slide hole, so that the trigger block 22b installed on the second plate 222 is away from the switch member 10, and in this process, the elastic member 213 is squeezed by the first plate 221 on the trigger member 22 to store energy and compress; when the control board W1 is powered off, the solenoid valve 211 is powered off accordingly, and stops supplying power to the electromagnet 212, so that the electromagnet 212 loses its magnetism. At the same time, the elastic member 213 quickly releases energy and recovers, so as to drive the second plate 222 on the trigger member 22 to move quickly, so as to drive the slide bar to move quickly along the reverse direction of the slide hole, so as to make the trigger block 22b quickly contact with the switch member 10 to start the backup battery W2.

[0047] In particular, when the elastic member 213 is in a normal state, that is, when the elastic member 213 is not compressed, the trigger member 22 and the switch member 10 are in contact. When the user starts the power supply terminal to energize the control board W1, the electromagnet 212 generates magnetism and adsorbs the magnetic attraction member on the trigger member 22 to keep the trigger member 22 away from the switch member 10. During this process, the elastic member 213 is compressed.

[0048] It should also be noted that in the embodiment of the present invention, since the trigger component 22 is always in contact with the switch component 10 when the power supply terminal is not started to supply power to the control panel W1 of the drone, the backup battery W2 is always in a state of supplying power to the control panel W1 of the drone, which will cause damage to the backup battery W2; therefore, in order to extend the service life of the backup battery W2, the control panel W1 in the present invention is also provided with a blocking switch Q1 for cutting off the electrical connection with the backup battery W2. When the drone is not in use, the user can remotely control the blocking switch Q1 to block the connection between the backup battery W2 and the control panel W1; when the drone is in use, the blocking switch Q1 is closed again to connect the backup battery W2 to the control panel W1. Since the power supply terminal has been started at this time, the trigger component 22 is already away from the switch component 10, and the backup battery W2 will not supply power to the control panel W1.

[0049] Furthermore, in order to facilitate the start and close of the switch member 10, the switch member 10 in the present invention is a touch switch, that is, the switch member 10 will be started only when the switch member 10 contacts the trigger block 22b, and when the trigger block 22b is separated from the switch member 10, the switch member 10 is immediately closed; on the other hand, during the start-up of the backup battery W2, the trigger member 22 moves quickly under the action of the elastic member 213 and contacts the switch member 10. Considering that the trigger block 22b installed on the trigger member 22 may cause damage to the switch member 10 due to rapid contact with the switch member 10, a convex head 22b0 is provided at one end of the trigger block 22b that contacts the touch switch. The trigger block 22b is made of rubber, and the inside of the trigger block 22b is hollow; when the convex head 22b0 on the trigger block 22b contacts the switch member 10, the rubber trigger block 22b can buffer most of the impact force, and the hollow design inside the trigger block 22b can reduce the impact force generated in this process, thereby achieving the purpose of extending the service life of the switch member 10.

[0050] Further, as attached Fig.15 As shown, at least two guide holes 1230 are provided, and in the embodiment of the present invention, four guide holes 1230 are provided. Four guide rods 223 are provided corresponding to the guide holes 1230 to limit the shaking of the trigger member 22 during the movement, improve the stability of the trigger member 22, and further ensure that after the control board W1 is powered off, the trigger block 22b on the trigger member 22 can accurately contact the switch member 10.

[0051] See attached Fig.11 -Attached Fig.15 The baffle 120 of the present invention is provided with a sleeve 120a, and a top column 221a is provided on the first plate 221 corresponding to the sleeve 120a, and the top column 221a is slidably installed in the sleeve 120a; the elastic member 213 is detachably installed in the sleeve 120a, and one end of the elastic member 213 is against the bottom wall of the sleeve 120a, and the other end is against the end of the top column 221a.

[0052] Specifically, when the top column 221a moves in the positive direction in the sleeve 120a, the elastic member 213 stores energy and is compressed; and when the elastic member 213 releases energy and recovers, it will drive the top column 221a to move in the opposite direction in the sleeve 120a; since the elastic member 213 is always in the sleeve 120a during the whole process, the design of the top column 221a and the sleeve 120a can also prevent the elastic member 213 from popping out and falling when the spring is squeezed, and can also protect the elastic member 213 and increase the overall operational stability of the drive assembly 21.

[0053] See attached Fig.11 -Attached Fig.15The elastic member 213 is a spring made of elastic plastic material; the spring made of elastic plastic material is not only cheap, but also cannot be mutually attracted with the electromagnet 212, thereby reducing interference with the charging magnet.

[0054] See attached Figure 1 -Attached Figure 8 A drone comprises a body W0, a rotor W3, a main battery W4, a control panel W1 and a backup battery W2, and also comprises an automatic switching device for the backup battery of the drone, wherein the main battery W4, the control panel W1 and the backup battery W2 are all arranged inside the body W0, and the main battery W4 and the backup battery W2 are both electrically connected to the control panel W1, and can respectively supply power to the control panel W1; the control panel W1 is electrically connected to the rotor W3 and the driving component 21 of the automatic switching device for the backup battery W2 of the drone; after the main battery W4 is powered off, the control panel W1 stops supplying power to the driving component 21, thereby making the driving component 21 run and driving the triggering component 22 to contact the switch component 10, so as to start the backup battery W2 to continue supplying power to the control panel W1.

[0055] Specifically, the drone in the present invention is an ordinary drone, and it is more common to use the main battery W4 as the power supply terminal; and because the drone is equipped with a drone backup battery automatic switching device, the risk of the drone crashing can be reduced; it should be noted that, as shown in the attached Fig. 9 As shown, a mounting hole 110 is provided in the mounting cavity 1. During production, the mounting frame is fixed in the third cabin W03 by using bolts; and clamping blocks K are provided on both sides of the battery cavity 11 of the mounting frame 1. The user places the spare battery W2 into the battery cavity 11 and clamps it with the clamping blocks K.

[0056] Furthermore, in order to better arrange the various components, a first cabin W01, a second cabin W02 and a second cabin W03 are provided inside the body W0, and the first cabin W01, the second cabin W02 and the second cabin W03 are isolated from each other, the control board W1 is installed in the first cabin W01, the main battery W4 is installed in the second cabin W02, and the backup battery W2 and the automatic switching device of the drone backup battery W2 are both arranged in the second cabin W03 to avoid interference between the main battery W4 and the backup battery W2, and in an embodiment of the present invention, the second cabin W02 is arranged between the first cabin W01 and the second cabin W03 to separate the first cabin W01 and the second cabin W03, thereby avoiding the electromagnet 212 in the second cabin W03 from affecting the control board W1 in the first cabin W01 when working.

[0057] In addition, since the backup battery W2 and the main battery W4 in the present invention both adopt a sealed design, they have good anti-interference effect; and in order to facilitate the charging of the backup battery W2 and the main battery W4 in the second cabin W02 and the second cabin W03, a charging connector Q2 is also provided on the control panel W1, and the charging connector Q2 runs through the first cabin W01 to the tail of the body W0; the user can charge the main battery W4 and the backup battery W2 by plugging in the power cord.

[0058] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

Claims

1. An automatic switching device for backup batteries of unmanned aerial vehicles, installed inside the body (W0) of an unmanned aerial vehicle with a control panel (W1) and a backup battery (W2), characterized in that: It comprises a mounting frame (1) and a switching mechanism (2); The mounting frame (1) is arranged inside the drone, the mounting frame (1) is provided with a battery cavity (11) and a drive cavity (12), the backup battery (W2) is loaded in the battery cavity (11), and the mounting frame (1) is also provided with a switch component (10) electrically connected to the backup battery (W2); The switching mechanism (2) comprises a driving component (21) and a triggering member (22); the triggering member (22) is movably arranged in the driving cavity (12) and is designed corresponding to the switch member (10); the driving component (21) is electrically connected to the control board (W1), and the driving component (21) is arranged beside the triggering member (22) and is drivingly connected to the triggering member (22); When the control panel (W1) is powered on, the driving component (21) drives the trigger component (22) away from the switch component (10); after the control panel (W1) is powered off, the driving component (21) drives the trigger component (22) to quickly approach and contact the switch component (10), thereby starting the backup battery (W2) to supply power to the control panel (W1); A baffle (120) is provided in the driving chamber (12) to divide the driving chamber (12) into an isolation chamber (121) and an active chamber (122); the driving assembly (21) comprises an electromagnetic valve (211), a pass electromagnet (212) and an elastic member (213); the electromagnetic valve (211) is installed in the isolation chamber (121), the pass electromagnet (212) and the elastic member (213) are installed in the active chamber (122), the electromagnetic valve (211) is electrically connected to the control board (W1) and the pass electromagnet (212) respectively; a magnetic attraction block (22a) is provided on the triggering member (22) corresponding to the pass electromagnet (212); the elastic member (213) is located between the baffle (120) and the triggering member (22), and one end of the elastic member (213) is in contact with the triggering member (22), and the other end is in contact with the baffle (120); A mounting block (123) is provided in the movable cavity (122), and a guide hole (1230) is provided on the mounting block (123); the trigger member (22) comprises a first plate (221), a second plate (222) and a guide rod (223), and two ends of the guide rod (223) are respectively fixedly connected to the first plate (221) and the second plate (222); the guide rod (223) is slidably installed in the guide hole (1230), the magnetic attraction block (22a) is installed on the first plate (221), one end of the elastic member (213) is against the first plate (221), and the other end is against the baffle (120); a trigger block (22b) is provided on the second plate (222); At least two guide holes (1230) are provided, and the guide rods (223) are arranged corresponding to the guide holes (1230); The baffle (120) is provided with a sleeve (120a), and the first plate (221) is provided with a top column (221a) corresponding to the sleeve (120a), and the top column (221a) is slidably installed in the sleeve (120a); the elastic member (213) is detachably installed in the sleeve (120a), and one end of the elastic member (213) is against the bottom wall of the sleeve (120a), and the other end is against the end of the top column (221a).

2. The automatic switching device for backup batteries of unmanned aerial vehicles according to claim 1 is characterized in that: The elastic member (213) is a spring.

3. The automatic switching device for backup batteries of unmanned aerial vehicles according to claim 2 is characterized in that: The spring is made of elastic plastic material.

4. The automatic switching device for backup batteries of unmanned aerial vehicles according to claim 1, characterized in that: The switch element (10) is a touch switch, and the end of the trigger block (22b) in contact with the touch switch is provided with a convex head (22b0). The trigger block (22b) is made of rubber, and the inside of the trigger block (22b) is hollow.

5. A drone, comprising a body (W0), a rotor (W3), a main battery (W4), a control panel (W1) and a backup battery (W2), characterized in that: The invention also comprises an automatic switching device for a backup battery of a drone as claimed in any one of claims 1 to 4, wherein the main battery (W4), the control panel (W1) and the backup battery (W2) are all arranged inside the body (W0), and the main battery (W4) and the backup battery (W2) are both electrically connected to the control panel (W1) and can respectively supply power to the control panel (W1); the control panel (W1) is electrically connected to the rotor (W3) and the driving component (21) of the automatic switching device for the backup battery (W2) of the drone; after the main battery (W4) is powered off, the control panel (W1) stops supplying power to the driving component (21), thereby causing the driving component (21) to operate and driving the trigger component (22) to contact the switch component (10), so as to start the backup battery (W2) to continue supplying power to the control panel (W1).

6. The drone according to claim 5, characterized in that: The body (W0) is provided with a first cabin (W01), a second cabin (W02) and a second cabin (W03), and the first cabin (W01), the second cabin (W02) and the second cabin (W03) are isolated from each other. The control panel (W1) is installed in the first cabin (W01), the main battery (W4) is installed in the second cabin (W02), and the backup battery (W2) and the automatic switching device of the drone backup battery (W2) are both arranged in the second cabin (W03).

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