Ground comprehensive power supply integrated system of mooring unmanned aerial vehicle

Abstract

The invention relates to the technical field of power supply, in particular to a mooring unmanned aerial vehicle ground comprehensive power source integrated system which comprises a ground power source, an unmanned aerial vehicle, a standby power source and a power supply circuit, the ground power source supplies power to the unmanned aerial vehicle and / or the standby power source through the power supply circuit, and the standby power source supplies power to the unmanned aerial vehicle through the power supply circuit. The standby power supply is installed in the unmanned aerial vehicle, and the ground power supply supplies power to the unmanned aerial vehicle through the ground power supply port; on the basis that the ground power supply supplies power to the mooring unmanned aerial vehicle, the standby power supply is further installed on the unmanned aerial vehicle body, the unmanned aerial vehicle can be independently supplied with power through the standby power supply, and therefore the unmanned aerial vehicle can independently execute the long-distance voyage task, and meanwhile the standby power supply can be charged through the ground power supply.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a ground integrated power supply system for tethered unmanned aerial vehicles. Background Technology

[0002] Tethered drones, as a new type of drone technology, have gradually gained widespread application in various fields due to their unique continuous power supply and high stability. Unlike ordinary drones, tethered drones are connected to the ground via a cable, enabling them to fly for extended periods and providing a continuous power supply, making them suitable for tasks such as high-altitude inspection, communication relay, and emergency rescue.

[0003] Existing tethered drones can only be powered by ground power sources, and their flight range is limited, making it impossible for drones to perform long-distance missions independently.

[0004] Application content

[0005] To address the problems existing in the prior art, this application provides a ground integrated power supply system for tethered unmanned aerial vehicles (UAVs).

[0006] A ground-based integrated power supply system for tethered unmanned aerial vehicles (UAVs) includes: a ground power supply, an UAV, a backup power supply, and a power supply circuit. The ground power supply supplies power to the UAV and / or the backup power supply through the power supply circuit, the backup power supply supplies power to the UAV through the power supply circuit, the backup power supply is installed inside the UAV, and the ground power supply supplies power to the UAV through a ground power supply port.

[0007] The power supply circuit includes a main circuit, a backup circuit, and a backup power charging circuit. The main circuit is a circuit that connects the ground power port to the UAV body, the backup circuit is a circuit that connects the backup power supply to the UAV body, and the backup power charging circuit is a circuit that connects the ground power port to the backup power supply.

[0008] As a further solution: the main circuit includes contactor KM1, DC / DC Buck circuit, contactor KM2 and capacitor C1, and the ground power port is connected in sequence to contactor KM1, DC / DC Buck circuit, contactor KM2, capacitor C1 and UAV body.

[0009] As a further solution: the backup circuit includes relay KV1 and relay KV2, the positive terminal of the backup power supply is connected in sequence to relay KV1 and the positive input terminal of the main circuit, and the negative terminal of the backup power supply is connected in sequence to relay KV2 and the negative input terminal of the main circuit.

[0010] As a further solution: the backup power charging circuit includes a DC / DC Boost circuit, and the backup power supply is connected in sequence to contactor KM3, the output terminal of the DC / DC Boost circuit, and the output terminal of the DC / DC Buck circuit in the main circuit.

[0011] As a further embodiment: the DC / DC Buck circuit includes a power module IGBT1, a diode D1, an inductor L1, and an inductor L2. The collector of the power module IGBT1 is the positive input terminal of the DC / DC Buck circuit. The emitter of the power module IGBT1 is connected to one end of the inductor L1, and the other end of the inductor L1 is the positive output terminal of the DC / DC Buck circuit. One end of the inductor L2 is the negative input terminal of the DC / DC Buck circuit and is connected in sequence to the positive terminal of the diode D1 and the emitter of the power module IGBT1. The other end of the diode D1 and the inductor L2 serves as the negative output terminal of the DC / DC Buck circuit.

[0012] As a further embodiment: the DC / DC Boost circuit includes power module IGBT2, power module IGBT3, diode D2, diode D3, capacitor CS2, capacitor CS3, inductor L1, and inductor L2. The DC / DC Boost circuit shares inductor L1 and inductor L2 with the DC / DC Buck circuit. The collector of power module IGBT2 is sequentially connected to the anode of diode D2, capacitor CS2, and the emitter of power module IGBT2 to form a loop. The collector of power module IGBT3 is sequentially connected to capacitor CS3, diode D3, and the emitter of power module IGBT3 to form a loop. The collector of power module IGBT3 is connected to the emitter of power module IGBT2. The emitter of power module IGBT3 is connected to inductor L2. The collector of power module IGBT2 is connected to inductor L1. The cathode of diode D2 serves as the positive output terminal of the DC / DC Boost circuit, and the anode of diode D1 serves as the negative output terminal of the DC / DC Boost circuit.

[0013] As a further option, a capacitor CS1 is installed between the contactor KM1 and the DC / DC Buck circuit.

[0014] As a further solution: the power supply circuit also includes a drone pre-charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, resistor R2, relay KV3 and the positive output terminal of the main circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, resistor R1, relay KV4 and the negative output terminal of the main circuit.

[0015] As a further embodiment, the power supply circuit also includes a backup power supply step-down charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, relay KV6, and the positive output terminal of the DC / DC Boost circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, relay KV5, and the negative output terminal of the DC / DC Boost circuit.

[0016] As a further solution, the following operating modes are included: drone pre-charging, ground power supply, backup power supply step-down charging, backup power supply charging, backup power supply boost charging, and backup power supply operation.

[0017] The technical effects and advantages of this application are as follows:

[0018] In this application, in addition to the ground power supply providing power to the tethered drone, a backup power supply is also installed on the drone itself. The backup power supply can supply power to the drone independently, enabling the drone to perform long-range missions independently. At the same time, the backup power supply can also be charged through the ground power supply.

[0019] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0020] Figure 1 A schematic diagram of a ground-based integrated power supply system for tethered unmanned aerial vehicles is shown.

[0021] Figure 2 A circuit diagram of a ground integrated power supply system for a tethered unmanned aerial vehicle is shown. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Furthermore, in the application, the terms "first," "second," and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish different elements, and the terms "upper," "lower," "left," "right," and other similar words are merely positional relationships in the accompanying drawings.

[0024] like Figure 1As shown, one embodiment of this application provides a ground integrated power supply system for tethered unmanned aerial vehicles (UAVs), including: a ground power supply, a UAV, a backup power supply, and a power supply circuit. The ground power supply supplies power to the UAV and / or the backup power supply through the power supply circuit, the backup power supply supplies power to the UAV through the power supply circuit, the backup power supply is installed inside the UAV, and the ground power supply supplies power to the UAV through a ground power supply port.

[0025] Specifically,

[0026] like Figure 2 As shown, the power supply circuit includes a main circuit, a backup circuit, and a backup power charging circuit. The main circuit is a circuit that connects the ground power port to the UAV body. The ground power port is connected in sequence to contactor KM1, DC / DC Buck circuit, contactor KM2, capacitor C1, and the UAV body. After contactor KM1 and contactor KM2 are closed, the ground power is stepped down through the DC / DC Buck circuit to charge capacitor C1 and the UAV body.

[0027] The backup circuit is a circuit that connects the backup power supply to the drone body. The positive terminal of the backup power supply is connected to the relay KV1 and the positive input terminal of the main circuit in sequence, and the negative terminal of the backup power supply is connected to the relay KV2 and the negative input terminal of the main circuit in sequence, so that the backup circuit is connected to the main circuit, thereby supplying power to the drone body through the backup power supply.

[0028] The backup power charging circuit is a circuit that connects the ground power port to the backup power supply. The backup power supply is connected in sequence to contactor KM3, the output terminal of the DC / DC Boost circuit, and the output terminal of the DC / DC Buck circuit in the main circuit.

[0029] With this setup, after the ground power supply is connected to the ground power port, when contactors KM1, KM2, and KM3 are closed, the ground power supply uses a DC / DC Buck circuit to step down the voltage to power the UAV itself. At the same time, the ground power supply uses a DC / DC Buck circuit to step down the voltage and then a DC / DC Boost circuit to boost the voltage to charge the backup power supply.

[0030] It should be noted that the positive input terminal of the main circuit is the positive input terminal of the ground power port, the negative input terminal of the main circuit is the negative input terminal of the ground power port, and the positive and negative output terminals of the main circuit are the two ends of capacitor C1, respectively.

[0031] In one embodiment of this application, the DC / DC Buck circuit includes a power module IGBT1, a diode D1, an inductor L1, and an inductor L2. The collector of the power module IGBT1 is the positive input terminal of the DC / DC Buck circuit, the emitter of the power module IGBT1 is connected to one end of the inductor L1, the other end of the inductor L1 is the positive output terminal of the DC / DC Buck circuit, one end of the inductor L2 is the negative input terminal of the DC / DC Buck circuit and is connected in sequence to the positive terminal of the diode D1 and the emitter of the power module IGBT1, and the other end of the diode D1 and inductor L2 serves as the negative output terminal of the DC / DC Buck circuit.

[0032] In one embodiment of this application, the DC / DC Boost circuit includes a power module IGBT2, a power module IGBT3, diodes D2 and D3, capacitors CS2 and CS3, inductors L1 and L2. The DC / DC Boost circuit shares inductors L1 and L2 with the DC / DC Buck circuit. The collector of power module IGBT2 is sequentially connected to the anode of diode D2, capacitor CS2, and the emitter of power module IGBT2 to form a circuit. The collector of power module IGBT3 is sequentially connected to capacitor CS3, the anode of diode D3, and the emitter of power module IGBT3 to form a circuit. The collector of power module IGBT3 is connected to the emitter of power module IGBT2. The emitter of power module IGBT3 is connected to inductor L2. The collector of power module IGBT2 is connected to inductor L1. The cathode of diode D2 serves as the positive output terminal of the DC / DC Boost circuit, and the anode of diode D1 serves as the negative output terminal of the DC / DC Boost circuit.

[0033] In one embodiment of this application, a capacitor CS1 is installed between the contactor KM1 and the DC / DC Buck circuit in the main circuit to reduce the impact of the DC / DC Buck circuit pulse ripple voltage on the power supply.

[0034] In one embodiment of this application, the power supply circuit further includes a drone pre-charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, resistor R2, relay KV3 and the positive output terminal of the main circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, resistor R1, relay KV4 and the negative output terminal of the main circuit.

[0035] In one embodiment of this application, the power supply circuit further includes a backup power supply step-down charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, the relay KV6, and the positive output terminal of the DC / DC Boost circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, the relay KV5, and the negative output terminal of the DC / DC Boost circuit.

[0036] With this configuration, the integrated power system operates in the following modes when powering the drone:

[0037] The drone is pre-charged. Relays KV3 and KV4 are closed to pre-charge the drone body and capacitor C1 through the backup power supply.

[0038] After the drone is pre-charged, the ground power supply disconnects relays KV3 and KV4 and closes contactors KM1 and KM2. The ground power supply then supplies power to the drone after being stepped down by the DC / DC Buck circuit.

[0039] During the standby power supply step-down charging process, when the ground power supply is supplying power to the UAV, relays KV5 and KV6 are closed. The ground power supply then steps down the voltage through the DC / DC Buck circuit to charge the standby power supply.

[0040] The backup power supply is charged. After the backup power supply is charged by step-down, relays KV5 and KV6 are disconnected, and relays KV1 and KV2 are closed. The backup power supply is then charged directly through the ground power supply.

[0041] The backup power supply is boosted and charged. After the backup power supply is fully charged, relays KV1 and KV2 are disconnected, and contactor KM3 is closed. The ground power supply is stepped down by the DC / DC Buck circuit and then stepped up by the DC / DC Boost circuit to boost and charge the backup power supply.

[0042] After the drone pre-charging is completed, the backup power supply disconnects relays KV3 and KV4, and closes contactors KM1, KM2, relays KV1 and KV2. The backup power supply then supplies power to the drone through the backup circuit and the main circuit.

[0043] In one embodiment of this application, relays KV1, KV2, KV3, and KV4 are all voltage relays, and contactors KM1, KM2, and KM3 are also included. Furthermore, a tethered UAV ground integrated power supply system further includes a voltage detection module and a processor. The processor is powered by a backup power supply. The control pins of relays KV1, KV2, KV3, KV4, KM1, KM2, and KM3 are connected to the processor. The voltage detection module detects the voltage of capacitor C1, the backup power supply voltage, and the ground power supply voltage. The processor, based on preset threshold values ​​for the voltages of capacitor C1, backup power supply, and ground power supply, and the voltages detected by the voltage detection module, closes or opens relays KV1, KV2, KV3, KV4, KM1, KM2, and KM3, selecting one or more of the above operating modes.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A ground-based integrated power supply system for tethered unmanned aerial vehicles (UAVs), characterized in that, include: The system includes a ground power supply, a drone, a backup power supply, and a power supply circuit. The ground power supply powers the drone and / or the backup power supply through the power supply circuit. The backup power supply powers the drone through the power supply circuit. The backup power supply is installed inside the drone. The ground power supply powers the drone through a ground power supply port. The power supply circuit includes a main circuit, a backup circuit, and a backup power charging circuit. The main circuit is a circuit that connects the ground power port to the UAV body, the backup circuit is a circuit that connects the backup power supply to the UAV body, and the backup power charging circuit is a circuit that connects the ground power port to the backup power supply.

2. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 1, characterized in that, The main circuit includes contactor KM1, DC / DC Buck circuit, contactor KM2 and capacitor C1. The ground power port is connected in sequence to contactor KM1, DC / DC Buck circuit, contactor KM2, capacitor C1 and UAV body.

3. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 2, characterized in that, The backup circuit includes relays KV1 and KV2. The positive terminal of the backup power supply is connected in sequence to relay KV1 and the positive input terminal of the main circuit, and the negative terminal of the backup power supply is connected in sequence to relay KV2 and the negative input terminal of the main circuit.

4. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 2, characterized in that, The backup power charging circuit includes a DC / DC Boost circuit, and the backup power supply is connected in sequence to contactor KM3, the output terminal of the DC / DC Boost circuit, and the output terminal of the DC / DC Buck circuit in the main circuit.

5. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 4, characterized in that, The DC / DC Buck circuit includes a power module IGBT1, a diode D1, an inductor L1, and an inductor L2. The collector of the power module IGBT1 is the positive input terminal of the DC / DC Buck circuit. The emitter of the power module IGBT1 is connected to one end of the inductor L1, and the other end of the inductor L1 is the positive output terminal of the DC / DC Buck circuit. One end of the inductor L2 is the negative input terminal of the DC / DC Buck circuit and is connected in sequence to the positive terminal of the diode D1 and the emitter of the power module IGBT1. The other end of the diode D1 and the inductor L2 serves as the negative output terminal of the DC / DC Buck circuit.

6. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 5, characterized in that, The DC / DC Boost circuit includes power modules IGBT2 and IGBT3, diodes D2 and D3, capacitors CS2 and CS3, inductors L1 and L2. The DC / DC Boost circuit shares inductors L1 and L2 with the DC / DC Buck circuit. The collector of power module IGBT2 is sequentially connected to the anode of diode D2, capacitor CS2, and the emitter of power module IGBT2 to form a loop. The collector of power module IGBT3 is sequentially connected to capacitor CS3, diode D3, and the emitter of power module IGBT3 to form a loop. The collector of power module IGBT3 is connected to the emitter of power module IGBT2. The emitter of power module IGBT3 is connected to inductor L2. The collector of power module IGBT2 is connected to inductor L1. The cathode of diode D2 serves as the positive output terminal of the DC / DC Boost circuit, and the anode of diode D1 serves as the negative output terminal of the DC / DC Boost circuit.

7. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 2, characterized in that, A capacitor CS1 is installed between the contactor KM1 and the DC / DC Buck circuit.

8. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 1, characterized in that, The power supply circuit also includes a drone pre-charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, resistor R2, relay KV3 and the positive output terminal of the main circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, resistor R1, relay KV4 and the negative output terminal of the main circuit.

9. The tethered unmanned aerial vehicle (UAV) ground integrated power supply system according to claim 2, characterized in that, The power supply circuit also includes a backup power supply step-down charging circuit, which includes a circuit that is sequentially connected to the positive terminal of the backup power supply, relay KV6, and the positive output terminal of the DC / DC Boost circuit, and a circuit that is sequentially connected to the negative terminal of the backup power supply, relay KV5, and the negative output terminal of the DC / DC Boost circuit.

10. A ground-based integrated power supply system for tethered unmanned aerial vehicles according to any one of claims 1-9, characterized in that, It includes the following working modes: drone pre-charging, ground power supply, backup power step-down charging, backup power charging, backup power boost charging, and backup power supply.

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