Anti-sparking power supply for drones

Abstract

This utility model relates to a power supply device, and more particularly to a fire-resistant power supply device for drones. According to the technical solution provided by this utility model, a fire-resistant power supply device for drones includes: a battery compartment unit, comprising at least one battery compartment; and a battery pack unit, comprising at least one battery pack. Each battery pack can be inserted into a corresponding battery compartment. During the insertion of the battery pack into the corresponding battery compartment, the battery pack is configured to pre-charge the load capacitor inside the drone, which is in a cold state. After the load capacitor is pre-charged, the battery pack is aligned and fully inserted into the battery compartment to provide power to the drone. This utility model effectively prevents sparking when the battery pack is inserted into the battery compartment, improving the safety and reliability of drone power-on.

Description

Technical Field

[0001] This utility model relates to a power supply device, and more particularly to a fireproof power supply device for unmanned aerial vehicles. Background Technology

[0002] Currently, the power supply used in drones generally includes a battery compartment and a battery pack that can be inserted into the battery compartment. Most drone power supplies on the market adopt a design without a BMS (Battery Management System), which means that the battery pack used in drones is in an output charged state before being inserted into the corresponding battery compartment.

[0003] Generally, when a drone's battery pack is inserted into the battery compartment, the electrical connection is usually established through interlocking pins. Since the interlocking process involves the pin contact area gradually increasing in size, there can be a moment of poor contact during the electrical connection. Additionally, drone circuitry contains capacitors. When these capacitors are sufficiently large and cold (without stored charge), their impedance is almost zero. Therefore, a large current will flow at the moment the pins are connected during insertion. Because the contact area of ​​the interlocking pins is small, the surface of the contact pins will rapidly heat up and may even melt under the influence of this large current, resulting in arcing. This poses a significant challenge to the power safety of drones, and effectively preventing arcing is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an anti-sparking power supply device for drones, which can effectively prevent sparking when the battery pack is inserted into the battery compartment, thereby improving the safety and reliability of drone power-on.

[0005] According to the technical solution provided by this utility model, a fire-resistant power supply device for unmanned aerial vehicles (UAVs) includes:

[0006] A battery compartment unit, including at least one battery compartment;

[0007] A battery pack unit includes at least one battery pack, each battery pack being able to be placed into a corresponding battery compartment, wherein...

[0008] During the process of placing the battery pack into the corresponding battery compartment, the battery pack is used to precharge the load capacitor inside the drone, which is in a cold state. After the load capacitor is precharged, the battery pack is aligned and fully placed into the battery compartment so as to provide power to the drone.

[0009] Each battery compartment is equipped with a pin unit that can be aligned and plugged into the battery pack.

[0010] The chamber pin unit includes at least a positive connection pin, a precharge connection pin, and a negative connection pin;

[0011] During the process of inserting the battery pack into the battery compartment, the pre-charge connection pin and the negative connection pin are first aligned and plugged into the battery pack, and after being aligned and plugged into the battery pack, the pre-charging of the load capacitor inside the drone is started.

[0012] After precharging is complete and the battery pack is fully inserted into the battery compartment, the positive connection pin, precharge connection pin, and negative connection pin are aligned and plugged into the battery pack to power the drone using the electrical connection between the positive connection pin, negative connection pin, and the battery pack. When powering the drone, the power output of the precharge connection pin is cut off.

[0013] The positive connection pin, precharge connection pin, and negative connection pin are parallel to each other, and the corresponding length directions of the positive connection pin, precharge connection pin, and negative connection pin are consistent with the direction in which the battery pack is placed into the battery compartment.

[0014] Inside the battery compartment, the heights of the pre-charge connection pin and the negative connection pin are greater than the height of the positive connection pin. Furthermore, during the process of inserting the battery pack into the battery compartment, the alignment and electrical connection between the negative connection pin and the battery pack is no later than the alignment and electrical connection between the pre-charge connection pin and the battery pack.

[0015] The precharge connection pin is connected to the first terminal of the load capacitor via a current-limiting resistor, and the first terminal of the load capacitor is also electrically connected to the positive connection pin. The second terminal of the load capacitor is electrically connected to the negative connection pin.

[0016] After the pre-charge connection pins are aligned and plugged into the battery pack, the load capacitor is charged through the current-limiting resistor;

[0017] After the load capacitor is pre-charged, at least disconnect the electrical connection between the pre-charge connection pin and the current-limiting resistor, so that after disconnecting the electrical connection between the pre-charge connection pin and the current-limiting resistor, disconnect the electrical connection between the pre-charge connection pin and the load capacitor.

[0018] The battery compartment is also equipped with an insertion control device for controlling the battery pack insertion status, wherein,

[0019] During the process of placing the battery pack into the battery compartment, the battery pack can be locked in the pre-charge position by the placement control device so that the load capacitor can be pre-charged by the battery pack in the pre-charge position.

[0020] After pre-charging the load capacitor, the locking state of the battery pack by the placement control device is released so that the battery pack can be aligned and fully placed into the battery compartment.

[0021] The insertion control device includes at least an electric telescopic actuator and an electric telescopic control circuit for controlling the telescopic state of the electric telescopic actuator, wherein,

[0022] During the process of inserting the battery pack into the battery compartment, after the battery pack comes into contact with the electric telescopic actuator in the extended state, the electric telescopic actuator in the extended state locks the battery pack in the pre-charge position, and the pre-charge connection pin and the negative connection pin are aligned and plugged into the battery pack to pre-charge the load capacitor in the drone.

[0023] After the electric telescopic control circuit determines that the pre-charging of the load capacitor is completed, the electric telescopic control circuit controls the electric telescopic actuator to be in the retracted state to release the electric telescopic actuator from the obstruction of the battery pack. After that, the battery pack can be completely placed into the battery compartment.

[0024] The electric telescopic control circuit includes a pre-charge detection circuit and a telescopic control drive circuit adapted and connected to the pre-charge detection circuit, wherein...

[0025] The precharge detection circuit is connected to the precharge connection pin and the load capacitor adapter at least. The telescopic control drive circuit is connected to the electric telescopic actuator, and the telescopic control drive circuit is also electrically connected to the negative connection pin.

[0026] After the precharge connection pin and the negative connection pin are aligned and plugged into the battery pack, the electric telescopic control circuit is powered by the precharge connection pin and the negative connection pin.

[0027] The pre-charge detection circuit detects the pre-charge status of the load capacitor. After the pre-charge of the load capacitor is completed, the pre-charge detection circuit drives the electric telescopic actuator to switch from the extended state to the retracted state through the telescopic control circuit.

[0028] The pre-charge detection circuit includes operational amplifier U1A and operational amplifier U2A, wherein,

[0029] The non-inverting input of operational amplifier U1A is connected to one end of capacitor C6, one end of resistor R20, and one end of resistor R17. The other end of resistor R17 is electrically connected to the precharge detection node formed based on precharge connection pin 4. The other ends of capacitor C6 and resistor R20 are grounded. The inverting input of operational amplifier U1A is connected to one end of resistor R9 and one end of capacitor C3. The other end of capacitor C3, the other end of resistor R9, and the output of operational amplifier U1A are connected to the non-inverting input of operational amplifier U2A through resistor R15.

[0030] The inverting input of operational amplifier U2A is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of resistor R8 and the reference voltage output terminal of reference voltage chip REG1. The other end of resistor R8 is grounded. The power supply terminal of reference voltage chip REG1 is electrically connected to the pre-charge detection node. The ground terminal of reference voltage chip REG1 is grounded.

[0031] The output of operational amplifier U2A is electrically connected to the telescopic control drive circuit.

[0032] The telescopic control drive circuit includes an NMOS transistor Q5, wherein...

[0033] The gate of NMOS transistor Q5 is connected to one end of resistor R12 and one end of resistor R16. The other end of resistor R12 is connected to the output of the precharge detection circuit. The other end of resistor R16 and the source and negative terminals of NMOS transistor Q5 are electrically connected to the pin.

[0034] The drain terminal of NMOS transistor Q5 is connected to one end of resistor R11, one end of capacitor C5, and one end of resistor R6. The other end of resistor R6 is connected to the cathode terminal of diode D1. The other end of capacitor C5 and the other end of resistor R11 are connected to the base terminal of NPN transistor Q3 and one end of resistor R13. The other end of resistor R13 and the emitter terminal of NPN transistor Q3 are both electrically connected to the negative terminal pin.

[0035] The anode of diode D1 is connected to the precharge detection node and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R4, one end of resistor R2 and one end of resistor R3. The other end of resistor R4 is connected to the collector of NPN transistor Q3, one end of capacitor C4 and one end of resistor R5.

[0036] The other end of capacitor C4 and the other end of resistor R5 are connected to the base of NPN transistor Q1, the cathode of diode D2, one end of resistor R18 and the base of PNP transistor Q6. The other end of resistor R18 and the collector of PNP transistor Q6 are electrically connected to the negative terminal pin.

[0037] The anode of diode D2 is connected to the emitter of NPN transistor Q1 and the base of NPN transistor Q2. The collector of NPN transistor Q1 is connected to the other end of resistor R2. The collector of NPN transistor Q2 is connected to the other end of resistor R3. The emitter of NPN transistor Q2 is connected to one end of resistor R7 and the emitter of PNP transistor Q4.

[0038] The base of PNP transistor Q4 is connected to the emitter of PNP transistor Q6. The collector of PNP transistor Q4 is connected to the negative terminal through resistor R19. The other end of resistor R7 is connected to the cathode of Zener diode D3 and one end of resistor R14. After being connected, they form a drive output terminal that is adapted to the electric telescopic actuator.

[0039] The anode of Zener diode D3 and the other end of resistor R14 are both connected to the cathode pin.

[0040] The telescopic control drive circuit also includes a drive shutdown control circuit, wherein...

[0041] The drive shutdown control circuit includes an NMOS transistor Q7, wherein the source terminal of the NMOS transistor Q7 is grounded, the drain terminal of the NMOS transistor Q7 is connected to the gate terminal of the NMOS transistor Q5, and the gate terminal of the NMOS transistor Q7 is connected to the UAV controller through a resistor R22.

[0042] The advantages of this invention are as follows: During the process of placing the battery pack into the battery compartment, the load capacitor is pre-charged using the pre-charge connection pin and the negative connection pin to avoid the load capacitor being in a cold state. After the load capacitor is pre-charged, the battery pack is aligned and fully placed into the battery compartment to power the drone. This effectively prevents arcing when the battery pack is inserted into the battery compartment and improves the safety and reliability of powering on the drone. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of one embodiment of the present invention.

[0044] Figure 2 This is a schematic diagram of one embodiment of the connection between the housing pin unit and the load capacitor of this utility model.

[0045] Figure 3 This is a circuit diagram of one embodiment of the electric telescopic control circuit of this utility model.

[0046] Explanation of reference numerals in the attached diagram: 1-Battery compartment unit, 2-Battery pack, 3-Negative connection pin, 4-Pre-charge connection pin, 5-Positive connection pin, 6-Battery compartment, 7-First slot of battery pack, 8-Second slot of battery pack, 9-Third slot of battery pack, 10-Electromagnet, 11-Armature boss, 12-Boss plate, 13-Elastomer, 14-Guide post of boss plate. Detailed Implementation

[0047] The present invention will be further described below with reference to the specific accompanying drawings and embodiments.

[0048] To effectively prevent sparking when the battery pack 2 is inserted into the battery compartment 6, and to improve the safety and reliability of powering on the drone, this utility model provides a spark-proof power supply device for drones. Specifically, the spark-proof power supply device includes:

[0049] Battery compartment unit 1 includes at least one battery compartment 6;

[0050] The battery pack unit includes at least one battery pack 2, each battery pack 2 being able to be placed into a corresponding battery compartment 6, wherein...

[0051] During the process of inserting the battery pack 2 into the corresponding battery compartment 6, the battery pack 2 is used to precharge the load capacitor inside the drone, which is in a cold state. After the load capacitor is precharged, the battery pack 2 is aligned and fully inserted into the battery compartment 6 so as to provide power to the drone.

[0052] To ensure the normal operation of the drone, a battery compartment unit 1 should be installed inside the drone. The battery compartment unit 1 can be formed by a battery storage shell / box or similar device installed inside the drone, allowing for the storage of the battery pack 2. Generally, the battery compartment unit 1 may include at least one battery compartment 6. The number of battery compartments 6 within the battery compartment unit 1 can be determined based on the battery pack 2 and the power requirements for the drone to operate using the battery pack 2. Specifically, only one battery pack 2 can be inserted into each battery compartment 6. Figure 1 The illustration shows an embodiment in which a battery pack 2 is placed inside a battery compartment 6. Therefore, when the battery compartment unit 1 includes multiple battery compartments 6, the battery pack unit should also include multiple battery packs 2, and each battery pack 2 is placed inside a corresponding battery compartment 6.

[0053] As explained in the background section, when the drone's battery pack 2 sparks when inserted into the battery compartment, two conditions generally need to be met simultaneously. Specifically:

[0054] 1) A large current is generated at the moment of contact;

[0055] 2) Small pin contact area.

[0056] Therefore, to prevent arcing, both of the above conditions must be avoided at the same time. Specifically, condition 2) can be solved by increasing the pin contact surface. However, no matter how much the pin size is increased, the pin contact surface is always a process of increasing in size during the stage of inserting the battery pack 2 into the battery compartment 6. Therefore, it is difficult to completely avoid the occurrence of condition 2).

[0057] As explained above, to prevent sparking, a feasible approach is to prevent condition 1) from occurring. Since the drone is not fully powered on before the battery pack 2 is fully inserted into the battery compartment 6, the large current at the moment of contact is mainly caused by the cold load capacitor. In practice, to prevent sparking, the corresponding load capacitor should be in a non-cold state before the battery pack 2 is fully inserted into the battery compartment 6, which can greatly reduce the current at the moment of contact.

[0058] Before battery pack 2 is fully inserted into battery compartment 6, to ensure the load capacitor is not cold, it can be pre-charged using battery pack 2. As explained above, this pre-charging ensures the load capacitor is not cold. Afterward, fully aligning battery pack 2 into battery compartment 6 effectively prevents arcing. Once battery pack 2 is fully inserted into battery compartment 6, the drone is powered on, providing operating power and improving the safety and reliability of power-on. This provides the power required for the drone's operation.

[0059] In order to enable pre-charging of the load capacitor during the insertion of the battery pack 2 into the battery compartment 6, in one embodiment of this invention, a compartment pin unit that can be aligned and inserted with the battery pack 2 is provided in each battery compartment 6.

[0060] The chamber pin unit includes at least a positive connection pin 5, a precharge connection pin 4, and a negative connection pin 3;

[0061] During the process of inserting the battery pack 2 into the battery compartment 6, the pre-charge connection pin 4 and the negative connection pin 3 are first aligned and plugged into the battery pack 2, and after being aligned and plugged into the battery pack 2, the pre-charging of the load capacitor inside the drone is started.

[0062] After precharging is complete and the battery pack 2 is fully inserted into the battery compartment 6, the positive connection pin 5, the precharge connection pin 4, and the negative connection pin 3 are all aligned and plugged into the battery pack 2 to provide power to the drone by utilizing the electrical connection between the positive connection pin 5, the negative connection pin 3 and the battery pack 2. When providing power to the drone, the power output of the precharge connection pin 4 is cut off.

[0063] It should be understood that placing the battery pack 2 into the battery compartment 6 specifically refers to connecting the battery pack 2 to the drone for power supply. To effectively achieve this power supply connection, a housing pin unit should be provided within the battery compartment 6. In this case, a housing slot unit corresponding to the housing pin unit should be provided on the battery pack 2. By aligning and inserting the housing pin unit with the housing slot unit, the battery pack 2 can be correctly placed into the battery compartment 6.

[0064] Figure 1The figure illustrates one embodiment of the battery compartment pin unit. As shown, the pin unit may include a positive connection pin 5, a pre-charge connection pin 4, and a negative connection pin 3. Additionally, the figure also illustrates one embodiment of the battery compartment slot unit. This unit includes a first battery pack slot 7, a second battery pack slot 8, and a third battery pack slot 9. When the battery pack 2 is inserted into the battery compartment 6, the negative connection pin 3 should correspond to the first battery pack slot 7, the pre-charge connection pin 4 to the second battery pack slot 8, and the positive connection pin to the third battery pack slot 9. Therefore, unlike existing technologies, this invention adds a pre-charge connection pin 4 to the battery compartment 6 and a corresponding second battery pack slot 8 to the battery pack 2 to facilitate pre-charging of the load capacitor. Figure 2 In the diagram, capacitor C100 is the load capacitor corresponding to one battery compartment 6.

[0065] Understandably, when battery pack 2 is placed into battery compartment 6, the end of the battery pack 2 with the body slot unit will gradually approach the compartment pin unit. In order to precharge the load capacitor before powering the drone, the precharge connection pin 4 and the negative connection pin 3 should be aligned and plugged into battery pack 2, while the positive connection pin 5 is not aligned and plugged into battery pack 2 at this time. It should be noted that when the precharge connection pin 4 is added to the compartment pin unit, when battery pack 2 is fully placed into battery compartment 6 and powering the drone, the positive connection pin 5 and the negative connection pin 3 should be aligned and plugged into battery pack 2. Therefore, when the positive connection pin 5 is not aligned and plugged into battery pack 2, it is impossible to form a working power supply state for the drone. At this time, the precharge connection pin 4, the negative connection pin 3, the load capacitor, and battery pack 2 form a closed loop to precharge the load capacitor.

[0066] Specifically, the pre-charge connection pin 4 and the negative connection pin 3 are aligned and inserted into the battery pack 2. This means that the pre-charge connection pin 4 enters the second slot 8 of the battery pack, and the negative connection pin 3 enters the first slot 7 of the battery pack. Furthermore, the pre-charge connection pin 4 and the negative connection pin 3 are electrically connected to the corresponding power outlets of the battery pack 2. The electrical connection to the corresponding power outlets of the battery pack 2 is designed to enable pre-charging of the load capacitor. The following descriptions of alignment and insertion with the battery pack 2 have the same meaning and can be found in this explanation. It should be noted that the positive connection pin 5 is not aligned and inserted into the battery pack 2. This specifically means that the positive connection pin 5 is not entered into the third slot 9 of the battery pack, or it is entered into the third slot 9 but is not electrically connected to the corresponding power outlet of the battery pack 2.

[0067] As explained above, pre-charging of the load capacitor should occur before battery pack 2 is fully aligned and inserted into battery compartment 6. After pre-charging of the load capacitor is completed, in order to provide power to the drone, battery pack 2 should be fully inserted into battery compartment 6. After battery pack 2 is fully inserted into battery compartment 6, the positive connection pin 5, pre-charge connection pin 4, and negative connection pin 3 are all aligned and plugged into battery pack 2. As explained above, the drone can be powered by the corresponding electrical connections of positive connection pin 5 and negative connection pin 3 with battery pack 2.

[0068] After pre-charging is complete and battery pack 2 is fully inserted into the battery compartment, the drone is powered by the electrical connection between the positive connection pin 5, the negative connection pin 3, and battery pack 2. Since the load capacitor is no longer cold at this time, in order not to affect the normal operation of the drone, the power output of the pre-charging connection pin 4 should be disconnected when battery pack 2 powers the drone. In other words, disconnecting the power output of the pre-charging connection pin 4 will stop charging the load capacitor.

[0069] In one embodiment of this utility model, the positive terminal connection pin 5, the pre-charge connection pin 4, and the negative terminal connection pin 3 are parallel to each other, and the corresponding length directions of the positive terminal connection pin 5, the pre-charge connection pin 4, and the negative terminal connection pin 3 are consistent with the direction in which the battery pack 2 is placed into the battery compartment 6.

[0070] Inside the battery compartment 6, the heights of the pre-charge connection pin 4 and the negative connection pin 3 are both greater than the height of the positive connection pin 5. Furthermore, during the process of inserting the battery pack 2 into the battery compartment 6, the alignment and electrical connection between the negative connection pin 3 and the battery pack 2 is no later than the alignment and electrical connection between the pre-charge connection pin 4 and the battery pack 2.

[0071] To achieve the aforementioned alignment and insertion with battery pack 2, the positive connection pin 5, pre-charge connection pin 4, and negative connection pin 3 should be parallel to each other, and their respective length directions should be consistent with the direction in which battery pack 2 is inserted into battery compartment 6. Figure 1 When the battery pack 2 is placed vertically into the battery compartment 6 as shown in the figure, the positive terminal connection pin 5, the precharge connection pin 4, and the negative terminal connection pin 3 are all vertically distributed. At this time, the first slot 7, the second slot 8, and the third slot 9 on the battery pack 2 are also vertically distributed, so that when the battery pack 2 is placed into the battery compartment 6, the negative terminal connection pin 3, the precharge connection pin 4, and the positive terminal connection pin 5 can correspond to and be aligned with the first slot 7, the second slot 8, and the third slot 9, respectively.

[0072] To ensure that the pre-charge connection pin 4 and the negative connection pin 3 are aligned and inserted into the battery pack 2 first, in one embodiment of this invention, the heights of the pre-charge connection pin 4 and the negative connection pin 3 are set to be greater than the height of the positive connection pin 5. Therefore, when the battery pack 2 is placed into the battery compartment 6, the pre-charge connection pin 4 and the negative connection pin 3 will be aligned and inserted into the battery pack 2 first; only when the battery pack 2 is further inserted into the battery compartment 6 can the positive connection pin 3 be aligned and inserted into the battery pack 2. Specifically, the heights of the pre-charge connection pin 4, the negative connection pin 3, and the positive connection pin 5 refer to... Figure 1 The distance extending vertically from the bottom of battery compartment 6.

[0073] In practice, the height of the negative connection pin 3 should not be less than the corresponding height of the pre-charge connection pin 4, so that the alignment and electrical connection between the negative connection pin 3 and the battery pack 2 is no later than the alignment and connection between the pre-charge connection pin 4 and the battery pack 2. Figure 1 and Figure 2 The diagram shows an embodiment where the negative connection pin 3 and the precharge connection pin 4 have the same height. In this case, the negative connection pin 3 and the precharge connection pin 4 will be aligned and connected to the battery compartment 2 at the same time, thus achieving the above-mentioned alignment and insertion simultaneously.

[0074] To ensure the alignment and insertion sequence described above, contact elastic elements can be installed in the first slot 7 and the second slot 8 of the battery pack. This ensures that when the positive connection pin 5 is aligned and inserted with the battery pack 2, the alignment and insertion of the negative connection pin 3 and the pre-charge connection pin 4 with the battery pack 2 will not be affected, thus maintaining the corresponding electrical connection with the battery pack 2. Alternatively, the first slot 7, the second slot 8, and the third slot 9 can be set to different depths, depending on whether the alignment and insertion sequence is satisfactory. Examples of each depth will not be provided here. In practice, when the positive connection pin 5 enters the third slot 9 and aligns and inserts with the battery pack 2, the battery pack 2 is aligned and fully inserted into the battery compartment 6.

[0075] In one embodiment of this utility model, the pre-charge connection pin 4 is connected to the first end of the load capacitor through a current-limiting resistor, and the first end of the load capacitor is also electrically connected to the positive connection pin 5, while the second end of the load capacitor is electrically connected to the negative connection pin 3.

[0076] After the pre-charge connection pin 4 is aligned and plugged into the battery pack 2, the load capacitor is charged through the current-limiting resistor;

[0077] After the load capacitor is pre-charged, at least disconnect the electrical connection between the pre-charge connection pin 4 and the current limiting resistor, so that after disconnecting the electrical connection between the pre-charge connection pin 4 and the current limiting resistor, disconnect the electrical connection between the pre-charge connection pin 4 and the load capacitor.

[0078] To prevent a large current surge upon contact, pre-charge connection pin 4 can be connected to the first terminal of the load capacitor via a current-limiting resistor. Figure 2 In this circuit, resistor R100 is the current-limiting resistor. Therefore, after the pre-charge connection pin 4 is aligned and plugged into the battery pack 2, capacitor C100 can be charged through resistor R100. Due to the effect of the current-limiting resistor, the current at the moment of pin contact can be reduced. After the pre-charge of the load capacitor is completed, or after the battery pack 2 supplies power to the drone, the connection between the pre-charge connection pin 4 and the current-limiting resistor should be disconnected. At this time, the connection between the pre-charge connection pin 4 and the load capacitor can be disconnected, and the charging of the load capacitor through the pre-charge connection pin 4 will stop.

[0079] It is understood that the precharge connection pin 4 can be connected to the current limiting resistor through a normally closed switch. When it is necessary to disconnect the connection with the current limiting resistor, the normally closed switch should be controlled to be in the normally open state. The state transition of the normally closed switch can be controlled by the controller in the UAV. The normally closed switch can be a commonly used semiconductor switch, such as a MOSFET switch device. The specific method of disconnecting the connection between the precharge connection pin 4 and the current limiting resistor can be selected as needed, and will not be listed here.

[0080] It should be understood that although the positive connection pin 5 is electrically connected to the pre-charge connection pin 4 through a current-limiting resistor, the presence of the current-limiting resistor prevents the positive connection pin 5 from supplying power to the drone. Disconnecting the pre-charge connection pin 4 from the load capacitor / current-limiting resistor prevents leakage through the pre-charge connection pin 4, and the connection between the pre-charge connection pin 4 and the corresponding power outlet of the battery pack 2 does not affect the safety and reliability of power supply to the drone.

[0081] Figure 1 and Figure 2 The diagram illustrates an embodiment where the positive connection pin 5, pre-charge connection pin 4, and negative connection pin 3 are strip-shaped or columnar. The shapes of the positive connection pin 5, pre-charge connection pin 4, and negative connection pin 3 can be selected as needed. It is understood that once the shapes of the positive connection pin 5, pre-charge connection pin 4, and negative connection pin 3 are determined, the third slot 9, second slot 8, and first slot 7 of the battery pack should be configured to match their corresponding shapes to ensure proper alignment and insertion.

[0082] In practical implementation, corresponding alignment guide structures can be set on the battery pack 2 and inside the battery compartment 6 so that after the battery pack 2 is placed into the battery compartment 6, the negative terminal connection pin 3, the pre-charge connection pin 4, and the positive terminal connection pin 5 can be aligned with the first slot 7, the second slot 8, and the third slot 9 of the battery pack, respectively. The alignment guide structure can be a combination of guide grooves and guide protrusions. In addition, the shapes of the positive terminal connection pin 5, the pre-charge connection pin 4, and / or the negative terminal connection pin 3 can be set to ensure that the battery pack 2 is aligned and inserted into the first slot 7, the second slot 8, and the third slot 9 of the battery pack after being placed into the battery compartment 6, thereby improving the reliability of the battery pack 2 being placed into the battery compartment 6.

[0083] In one embodiment of this utility model, an insertion control device for controlling the insertion state of the battery pack 2 is further provided inside the battery compartment 6, wherein...

[0084] During the process of inserting the battery pack 2 into the battery compartment 6, the battery pack 2 can be locked in the pre-charge position by the insertion control device so that the load capacitor can be pre-charged by the battery pack 2 in the pre-charge position.

[0085] After pre-charging the load capacitor, the locking state of the battery pack 2 by the insertion control device is released so that the battery pack 2 can be aligned and fully inserted into the battery compartment 6.

[0086] To improve the reliability of pre-charging the load capacitor, an insertion control device can be installed in the battery compartment 6. During the process of inserting the battery pack 2 into the battery compartment 6, it will contact and cooperate with the insertion control device to lock the battery pack 2 in the pre-charge position so as to maintain the pre-charge state of the load capacitor. Thus, when the battery pack 2 is locked in the pre-charge position, the pre-charge connection pin 4 and the negative connection pin 3 are aligned and plugged into the battery pack 2, while the positive connection pin 5 is not aligned and plugged into the battery pack 2.

[0087] After the pre-charging of the load capacitor is completed, the locking state of the battery pack 2 by the insertion control device should be released, that is, the battery pack 2 should be released from the pre-charging position. After that, the battery pack 2 can be pushed into the battery compartment 6 until the battery pack 2 is aligned and fully inserted into the battery compartment 6. The situation of the battery pack being aligned and fully inserted into the battery pack 6 can be referred to the above description, and will not be repeated here.

[0088] In one embodiment of this utility model, the insertion control device includes at least an electric telescopic actuator and an electric telescopic control circuit for controlling the telescopic state of the electric telescopic actuator, wherein...

[0089] During the process of inserting battery pack 2 into battery compartment 6, after battery pack 2 comes into contact with the electric telescopic actuator in the extended state, the electric telescopic actuator in the extended state locks battery pack 2 in the pre-charge position, and the pre-charge connection pin 4 and the negative connection pin 3 are aligned and plugged into battery pack 2 to pre-charge the load capacitor in the drone.

[0090] After the electric telescopic control circuit determines that the pre-charging of the load capacitor is completed, the electric telescopic control circuit controls the electric telescopic actuator to be in the retracted state to release the electric telescopic actuator from the obstruction of the battery pack 2. After that, the battery pack 2 can be completely placed into the battery compartment 6.

[0091] To improve the controllability of inserting the battery pack 2 into the battery compartment 6, the insertion control device can employ a combination of an electric telescopic actuator and an electric telescopic control circuit. The electric telescopic control circuit controls the extension and retraction state of the electric telescopic actuator. When the electric actuator is in the extended state, it can contact the battery pack 2 to lock it in the pre-charge position. When the electric telescopic actuator is in the retracted state, it can unlock the battery pack 2 from the pre-charge position. It should be understood that locking the battery pack 2 in the pre-charge position specifically means that the battery pack 2 cannot be further inserted into the battery compartment 6.

[0092] Figure 1 The figure illustrates one embodiment of an electrically operated telescopic actuator. As shown, the electric telescopic actuator may include an electromagnet 10 and an armature boss 11 corresponding to the electromagnet 10. The electromagnet 10 can be installed inside the battery compartment 6, and the armature boss 11 can move within the battery compartment 6. The direction of movement of the armature boss 11 is perpendicular to the direction in which the battery pack 2 is placed into the battery compartment 6. Figure 1 The image shows an embodiment in which two electromagnets 10 and two corresponding armature bosses 11 are provided in the battery compartment 6.

[0093] In specific implementation, the armature protrusion 11 can extend into the battery compartment 6. When the armature protrusion 11 extends into the battery compartment 6, the electric telescopic actuator is in the extended state. When the armature protrusion 11 retracts into the inner wall of the battery compartment 6, the electric telescopic actuator is in the retracted state. When the armature protrusion 11 extends into the battery compartment 6, it can prevent the battery pack 2 from being further inserted into the battery compartment 6, thereby locking the battery pack 2 in the pre-charge position. When the armature protrusion 11 retracts into the inner wall of the battery compartment 6, at least the armature protrusion 11 does not protrude from the inner surface of the battery compartment 6, specifically to ensure that it does not affect the insertion of the battery pack 2 into the battery compartment 6.

[0094] Figure 1In this configuration, the armature boss 11 is mounted on the boss plate 12. To improve the stability and reliability of the armature boss 11's movement, two boss plate guide posts 14 can be installed inside the inner wall of the battery compartment 6. The boss plate 12 can be fitted onto the boss plate guide posts 14 and can move along the length of the boss plate guide posts 14. Furthermore, an elastic body 13 is provided on each boss plate guide post 14. When the armature boss 11 retracts into the inner wall of the battery compartment 6, the boss plate 12 will approach the electromagnet 10. At this time, the boss plate 12 will compress the elastic body 13. The elastic body 13 can be a commonly used spring. When the armature boss 11 extends into the battery compartment 6, the boss plate 12 will move away from the electromagnet 10. Figure 1 The image shows an embodiment in which the armature boss 11 extends into the battery compartment 6. In this case, the armature boss 11 can contact the battery pack 2 to prevent the battery pack 2 from being further inserted into the battery compartment 6, thereby locking the battery pack 2 in the pre-charge position.

[0095] When the electric telescopic actuator adopts the above-mentioned cooperation form of electromagnet 10 and armature boss 11, the electric telescopic control circuit controls the telescopic state of the electric telescopic actuator mainly by controlling the working state of electromagnet 10. When electromagnet 10 is energized, the attraction of electromagnet 10 to armature boss 11 can cause armature boss 11 to retract into the inner wall of battery compartment 6. When electromagnet 10 is not energized, the elastic body 13 can push armature boss 10 to move in the direction of extending into battery compartment 6. If there is no battery pack 2 in battery compartment 6, it can extend into battery compartment 6.

[0096] In one embodiment of this utility model, the electric telescopic control circuit includes a pre-charge detection circuit and a telescopic control drive circuit adapted and connected to the pre-charge detection circuit, wherein...

[0097] The precharge detection circuit is connected to the precharge connection pin 4 and the load capacitor adapter at least. The telescopic control drive circuit is connected to the electric telescopic actuator, and the telescopic control drive circuit is also electrically connected to the negative connection pin 3.

[0098] After the precharge connection pin 4 and the negative connection pin 3 are aligned and inserted with the battery pack 2, the electric telescopic control circuit is powered by the precharge connection pin 4 and the negative connection pin 3.

[0099] The pre-charge detection circuit detects the pre-charge status of the load capacitor. After the pre-charge of the load capacitor is completed, the pre-charge detection circuit drives the electric telescopic actuator to switch from the extended state to the retracted state through the telescopic control circuit.

[0100] As explained above, before the battery pack 2 is inserted into the battery compartment 6, the drone is in a power-off state. In order to control the electric telescopic actuator, after the battery pack 2 pre-charges the load capacitor, the battery pack 2 supplies power to the electric telescopic control circuit through the pre-charge connection pin 4 and the negative connection pin 3, thus enabling the electric telescopic control circuit to operate. When the electric telescopic control circuit is operating, the charging status of the load capacitor can be detected by the pre-charge detection circuit. When it is determined that the pre-charging of the load capacitor is complete, the telescopic control drive circuit drives the electric telescopic actuator to switch from the extended state to the retracted state. For example, the electromagnet 10 is controlled to be energized, so that the armature boss 11 is switched from being inserted into the battery compartment 6 to being retracted into the inner wall of the battery compartment 6.

[0101] In one embodiment of this utility model, the pre-charge detection circuit includes operational amplifier U1A and operational amplifier U2A, wherein,

[0102] The non-inverting input of operational amplifier U1A is connected to one end of capacitor C6, one end of resistor R20, and one end of resistor R17. The other end of resistor R17 is electrically connected to the precharge detection node formed based on precharge connection pin 4. The other ends of capacitor C6 and resistor R20 are grounded. The inverting input of operational amplifier U1A is connected to one end of resistor R9 and one end of capacitor C3. The other end of capacitor C3, the other end of resistor R9, and the output of operational amplifier U1A are connected to the non-inverting input of operational amplifier U2A through resistor R15.

[0103] The inverting input of operational amplifier U2A is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of resistor R8 and the reference voltage output terminal of reference voltage chip REG1. The other end of resistor R8 is grounded. The power supply terminal of reference voltage chip REG1 is electrically connected to the pre-charge detection node. The ground terminal of reference voltage chip REG1 is grounded.

[0104] The output of operational amplifier U2A is electrically connected to the telescopic control drive circuit.

[0105] Figure 3 One embodiment of the precharge detection circuit is shown in the figure. Figure 3 In this context, PRE+ refers to the pre-charge detection node formed by connecting the pre-charge connection pin 4 to the current-limiting resistor, and P- refers to the node formed by aligning and inserting the negative connection pin 4 with the battery pack 2. The reference voltage chip REG1 can adopt a commonly used form. Figure 3The diagram illustrates an embodiment of a reference voltage chip REG1 with three pins. The power supply pin of the reference voltage chip REG1 is connected to the precharge detection node PRE+ and one end of capacitor C1, while the other end of capacitor C1 is grounded. The reference voltage output pin of the reference voltage chip REG1 is connected to one end of capacitor C2, resistor R8, and resistor R10, while the other end of capacitor C2 is grounded. Specifically, the precharge detection reference voltage can be set by the voltage division of resistors R8 and R10, and the precharge detection reference voltage is applied to the inverting input of operational amplifier U2A. Thus, the required precharge detection reference voltage can be obtained based on resistors R8 and R10.

[0106] The voltage of the precharge detection node PRE+ passes through resistors R17 and R20, and then is output to the non-inverting input of operational amplifier U2A via operational amplifier U1A. Here, operational amplifier U1A acts as an emitter follower operational amplifier. Capacitors C3 and C6 form a first-stage active filter. The first-stage active filter can improve the anti-disturbance capability when the precharge connection pin 4 is aligned and plugged into the battery pack 2.

[0107] Operational amplifier U2A operates as a comparator, comparing the voltage of the precharge detection node PRE+ with the aforementioned precharge detection reference voltage. When the voltage of the precharge detection node PRE+ is greater than the precharge detection reference voltage, it indicates that the precharge of the load capacitor is complete, and the output of operational amplifier U2A will be high; otherwise, the output of operational amplifier U2A will be low.

[0108] In practice, the pre-charge detection reference voltage can be set through the reference voltage chip REG1 and resistors R8 and R10. In other words, the required pre-charge detection reference voltage can be set according to the pre-charge requirements of the load capacitor.

[0109] In one embodiment of this utility model, the telescopic control drive circuit includes an NMOS transistor Q5, wherein...

[0110] The gate of NMOS transistor Q5 is connected to one end of resistor R12 and one end of resistor R16. The other end of resistor R12 is connected to the output of the precharge detection circuit. The other end of resistor R16 and the source terminal of NMOS transistor Q5 are electrically connected to pin 3.

[0111] The drain terminal of NMOS transistor Q5 is connected to one end of resistor R11, one end of capacitor C5, and one end of resistor R6. The other end of resistor R6 is connected to the cathode terminal of diode D1. The other end of capacitor C5 and the other end of resistor R11 are connected to the base terminal of NPN transistor Q3 and one end of resistor R13. The other end of resistor R13 and the emitter terminal of NPN transistor Q3 are both electrically connected to the negative terminal pin 3.

[0112] The anode of diode D1 is connected to the precharge detection node and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R4, one end of resistor R2 and one end of resistor R3. The other end of resistor R4 is connected to the collector of NPN transistor Q3, one end of capacitor C4 and one end of resistor R5.

[0113] The other end of capacitor C4 and the other end of resistor R5 are connected to the base of NPN transistor Q1, the cathode of diode D2, one end of resistor R18 and the base of PNP transistor Q6. The other end of resistor R18 and the collector of PNP transistor Q6 are both electrically connected to the negative terminal pin 3.

[0114] The anode of diode D2 is connected to the emitter of NPN transistor Q1 and the base of NPN transistor Q2. The collector of NPN transistor Q1 is connected to the other end of resistor R2. The collector of NPN transistor Q2 is connected to the other end of resistor R3. The emitter of NPN transistor Q2 is connected to one end of resistor R7 and the emitter of PNP transistor Q4.

[0115] The base of PNP transistor Q4 is connected to the emitter of PNP transistor Q6. The collector of PNP transistor Q4 is connected to the negative terminal pin 3 through resistor R19. The other end of resistor R7 is connected to the cathode of Zener diode D3 and one end of resistor R14. After being connected, they form a drive output terminal that is adapted to the electric telescopic actuator.

[0116] The anode of Zener diode D3 and the other end of resistor R14 are both connected to the cathode pin 3.

[0117] Specifically, the other end of resistor R12 is connected to the output of the pre-charge detection circuit, specifically, the other end of resistor R12 is connected to the output of operational amplifier U2A. When the output of operational amplifier U2A is high, NMOS transistor Q5 is turned on, which in turn turns off NPN transistor Q3. Subsequently, the two-stage totem driver circuit composed of NPN transistors Q1, Q2, Q4, and Q6 is pulled high by resistor R4, so that the driver output terminal outputs a high level. Figure 3 In this diagram, G1 is the driver output terminal. Specifically, the main function of the aforementioned NPN transistor Q3 is to change the logic level direction of the voltage.

[0118] When the drive output terminal outputs a high level, the electromagnet 10 will be energized, causing the armature boss 11 to retract into the inner wall of the battery compartment 6, i.e., switch to the retracted state. Therefore, initially, before the battery pack 2 is placed into the battery compartment 6, the armature boss 11 should extend into the battery compartment 6.

[0119] In one embodiment of this utility model, the telescopic control drive circuit further includes a drive shutdown control circuit, wherein...

[0120] The drive shutdown control circuit includes an NMOS transistor Q7, wherein the source terminal of the NMOS transistor Q7 is grounded, the drain terminal of the NMOS transistor Q7 is connected to the gate terminal of the NMOS transistor Q5, and the gate terminal of the NMOS transistor Q7 is connected to the UAV controller through a resistor R22.

[0121] As explained above, when the battery pack 2 is fully inserted into the battery compartment 6, it provides power to the drone, allowing the drone to enter normal power supply mode. At this time, the drone controller can operate normally and send a drive turn-off signal to the NMOS transistor Q7 to turn it on. When the NMOS transistor Q7 is on, the gate of the NMOS transistor Q5 is pulled low, which turns off the NMOS transistor Q5 and shuts down the telescopic control drive circuit. At this time, the electromagnet 10 is in a non-energized state. Since the battery pack 2 is fully inserted into the battery compartment 6, it will prevent the armature boss 11 from extending into the battery compartment 6, reducing the power consumption of the electromagnet 10 when it is energized.

[0122] After the battery pack 2 is removed from the battery compartment 6, the armature protrusion 11 can extend into the battery compartment 6 under the action of the elastic body 13, so as to lock the battery pack 2 in the pre-charge position when the new battery pack 2 is placed into the battery compartment 6.

[0123] Figure 3 AGND in the diagram is the grounding terminal. Generally, the negative connection pin 3 should be connected to the grounding terminal AGND.

Claims

1. An anti-sparking power supply device for a drone, characterized by, The anti-sparking power supply device includes: A battery compartment unit, including at least one battery compartment; A battery pack unit includes at least one battery pack, each battery pack being able to be placed into a corresponding battery compartment, wherein... During the process of placing the battery pack into the corresponding battery compartment, the battery pack is used to precharge the load capacitor inside the drone, which is in a cold state. After the load capacitor is precharged, the battery pack is aligned and fully placed into the battery compartment so as to provide power to the drone.

2. The anti-sparking power supply device for UAVs according to claim 1, characterized in that: Each battery compartment is equipped with a pin unit that can be aligned and plugged into the battery pack. The chamber pin unit includes at least a positive connection pin, a precharge connection pin, and a negative connection pin; During the process of inserting the battery pack into the battery compartment, the pre-charge connection pin and the negative connection pin are first aligned and plugged into the battery pack, and after being aligned and plugged into the battery pack, the pre-charging of the load capacitor inside the drone is started. After precharging is complete and the battery pack is fully inserted into the battery compartment, the positive connection pin, precharge connection pin, and negative connection pin are aligned and plugged into the battery pack to power the drone using the electrical connection between the positive connection pin, negative connection pin, and the battery pack. When powering the drone, the power output of the precharge connection pin is cut off.

3. The anti-sparking power supply device for unmanned aerial vehicles according to claim 2, characterized in that: The positive connection pin, precharge connection pin, and negative connection pin are parallel to each other, and the corresponding length directions of the positive connection pin, precharge connection pin, and negative connection pin are consistent with the direction in which the battery pack is placed into the battery compartment. Inside the battery compartment, the heights of the pre-charge connection pin and the negative connection pin are greater than the height of the positive connection pin. Furthermore, during the process of inserting the battery pack into the battery compartment, the alignment and electrical connection between the negative connection pin and the battery pack is no later than the alignment and electrical connection between the pre-charge connection pin and the battery pack.

4. The anti-sparking power supply device for UAVs according to claim 2, characterized in that: The precharge connection pin is connected to the first terminal of the load capacitor via a current-limiting resistor, and the first terminal of the load capacitor is also electrically connected to the positive connection pin. The second terminal of the load capacitor is electrically connected to the negative connection pin. After the pre-charge connection pins are aligned and plugged into the battery pack, the load capacitor is charged through the current-limiting resistor; After the load capacitor is pre-charged, at least disconnect the electrical connection between the pre-charge connection pin and the current-limiting resistor, so that after disconnecting the electrical connection between the pre-charge connection pin and the current-limiting resistor, disconnect the electrical connection between the pre-charge connection pin and the load capacitor.

5. The anti-sparking power supply device for unmanned aerial vehicles according to any one of claims 2 to 4, characterized in that: in The battery compartment is also equipped with an insertion control device for controlling the battery pack insertion status, wherein... During the process of placing the battery pack into the battery compartment, the battery pack can be locked in the pre-charge position by the placement control device so that the load capacitor can be pre-charged by the battery pack in the pre-charge position. After pre-charging the load capacitor, the locking state of the battery pack by the placement control device is released so that the battery pack can be aligned and fully placed into the battery compartment.

6. The anti-sparking power supply device for unmanned aerial vehicles according to claim 5, characterized in that: The insertion control device includes at least an electric telescopic actuator and an electric telescopic control circuit for controlling the telescopic state of the electric telescopic actuator, wherein, During the process of inserting the battery pack into the battery compartment, after the battery pack comes into contact with the electric telescopic actuator in the extended state, the electric telescopic actuator in the extended state locks the battery pack in the pre-charge position, and the pre-charge connection pin and the negative connection pin are aligned and plugged into the battery pack to pre-charge the load capacitor in the drone. After the electric telescopic control circuit determines that the pre-charging of the load capacitor is completed, the electric telescopic control circuit controls the electric telescopic actuator to be in the retracted state to release the electric telescopic actuator from the obstruction of the battery pack. After that, the battery pack can be completely placed into the battery compartment.

7. The anti-sparking power supply device for unmanned aerial vehicles according to claim 6, characterized in that: The electric telescopic control circuit includes a pre-charge detection circuit and a telescopic control drive circuit adapted and connected to the pre-charge detection circuit, wherein... The precharge detection circuit is connected to the precharge connection pin and the load capacitor adapter at least. The telescopic control drive circuit is connected to the electric telescopic actuator, and the telescopic control drive circuit is also electrically connected to the negative connection pin. After the precharge connection pin and the negative connection pin are aligned and plugged into the battery pack, the electric telescopic control circuit is powered by the precharge connection pin and the negative connection pin. The pre-charge detection circuit detects the pre-charge status of the load capacitor. After the pre-charge of the load capacitor is completed, the pre-charge detection circuit drives the electric telescopic actuator to switch from the extended state to the retracted state through the telescopic control circuit.

8. The anti-sparking power supply device for unmanned aerial vehicles according to claim 7, characterized in that: The pre-charge detection circuit includes operational amplifier U1A and operational amplifier U2A, wherein, The non-inverting input of operational amplifier U1A is connected to one end of capacitor C6, one end of resistor R20, and one end of resistor R17. The other end of resistor R17 is electrically connected to the precharge detection node formed based on precharge connection pin 4. The other ends of capacitor C6 and resistor R20 are grounded. The inverting input of operational amplifier U1A is connected to one end of resistor R9 and one end of capacitor C3. The other end of capacitor C3, the other end of resistor R9, and the output of operational amplifier U1A are connected to the non-inverting input of operational amplifier U2A through resistor R15. The inverting input of operational amplifier U2A is connected to one end of resistor R10. The other end of resistor R10 is connected to one end of resistor R8 and the reference voltage output terminal of reference voltage chip REG1. The other end of resistor R8 is grounded. The power supply terminal of reference voltage chip REG1 is electrically connected to the pre-charge detection node. The ground terminal of reference voltage chip REG1 is grounded. The output of operational amplifier U2A is electrically connected to the telescopic control drive circuit.

9. The anti-sparking power supply device for unmanned aerial vehicles according to claim 8, characterized in that: The telescopic control drive circuit includes an NMOS transistor Q5, wherein... The gate of NMOS transistor Q5 is connected to one end of resistor R12 and one end of resistor R16. The other end of resistor R12 is connected to the output of the precharge detection circuit. The other end of resistor R16 and the source and negative terminals of NMOS transistor Q5 are electrically connected to the pin. The drain terminal of NMOS transistor Q5 is connected to one end of resistor R11, one end of capacitor C5, and one end of resistor R6. The other end of resistor R6 is connected to the cathode terminal of diode D1. The other end of capacitor C5 and the other end of resistor R11 are connected to the base terminal of NPN transistor Q3 and one end of resistor R13. The other end of resistor R13 and the emitter terminal of NPN transistor Q3 are both electrically connected to the negative terminal pin. The anode of diode D1 is connected to the precharge detection node and one end of resistor R1. The other end of resistor R1 is connected to one end of resistor R4, one end of resistor R2 and one end of resistor R3. The other end of resistor R4 is connected to the collector of NPN transistor Q3, one end of capacitor C4 and one end of resistor R5. The other end of capacitor C4 and the other end of resistor R5 are connected to the base of NPN transistor Q1, the cathode of diode D2, one end of resistor R18 and the base of PNP transistor Q6. The other end of resistor R18 and the collector of PNP transistor Q6 are electrically connected to the negative terminal pin. The anode of diode D2 is connected to the emitter of NPN transistor Q1 and the base of NPN transistor Q2. The collector of NPN transistor Q1 is connected to the other end of resistor R2. The collector of NPN transistor Q2 is connected to the other end of resistor R3. The emitter of NPN transistor Q2 is connected to one end of resistor R7 and the emitter of PNP transistor Q4. The base of PNP transistor Q4 is connected to the emitter of PNP transistor Q6. The collector of PNP transistor Q4 is connected to the negative terminal through resistor R19. The other end of resistor R7 is connected to the cathode of Zener diode D3 and one end of resistor R14. After being connected, they form a drive output terminal that is adapted to the electric telescopic actuator. The anode of Zener diode D3 and the other end of resistor R14 are both connected to the cathode pin.

10. The anti-sparking power supply device for unmanned aerial vehicles according to claim 9, characterized in that: The telescopic control drive circuit also includes a drive shutdown control circuit, wherein... The drive shutdown control circuit includes an NMOS transistor Q7, wherein the source terminal of the NMOS transistor Q7 is grounded, the drain terminal of the NMOS transistor Q7 is connected to the gate terminal of the NMOS transistor Q5, and the gate terminal of the NMOS transistor Q7 is connected to the UAV controller through a resistor R22.

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