Unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power taking

Abstract

The utility model provides an unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power taking, and relates to the technical field of power equipment. The system comprises a wireless charging platform, a storage battery and an electricity taking control module, the wireless charging platform comprises a parking platform, and an electromagnetic coil is arranged in the parking platform; the storage battery is electrically connected with the electromagnetic coil to provide electric energy; the electricity taking control module is connected with the storage battery and supplies power to the storage battery. The wireless charging device for the unmanned aerial vehicle can provide an efficient and sustainable wireless charging solution for the unmanned aerial vehicle, so that the unmanned aerial vehicle can be continuously charged, the flight time is prolonged, the task execution capability is improved, and the problem that the unmanned aerial vehicle is difficult to charge when being subjected to electric power inspection in the field is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, and in particular to a wireless charging device for unmanned aerial vehicles that combines photovoltaic and CT induction power collection. Background Art

[0002] In recent years, the use of drones for inspection of high-voltage transmission and distribution lines has become increasingly mature at home and abroad, but drones are mostly charged by wire and need to frequently replace the battery life. At the same time, most of the high-voltage transmission and distribution lines are located in the wild environment of mountains and ridges, so it is very time-consuming and laborious to replace the battery or charge the drone. Therefore, it is very important to get rid of the constraints of the inherent shortcomings of the battery. The direct way is to find an energy source on the spot to directly power the drone. The energy around the high-voltage transmission line mainly includes solar energy, mechanical energy, high-voltage transmission line magnetic field and electric field energy, etc. By designing the corresponding energy collection circuit, a platform suitable for autonomous landing of drones for wireless charging can be set up every few towers on the inspection line of the drone to get rid of the constraints of the battery. Utility Model Content

[0003] The purpose of the utility model is to provide a wireless charging device for unmanned aerial vehicles that combines photovoltaic and CT induction power collection, so as to solve the problem of difficulty in charging when unmanned aerial vehicles are conducting power inspections in the wild.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wireless charging device for unmanned aerial vehicles that combines photovoltaic and CT induction power supply, including a wireless charging platform, a battery and a power supply control module; the wireless charging platform includes: a parking platform, an electromagnetic coil is arranged in the parking platform; the battery is electrically connected to the electromagnetic coil in the parking platform; the battery is connected to a charging connector, and the power supply control module is electrically connected to the charging connector.

[0005] Furthermore, the power supply control module includes a high-voltage induction power supply module, a solar power generation panel and a power supply selection control module; the high-voltage induction power supply module obtains energy from the magnetic field around the high-voltage cable and outputs direct current; the solar power generation panel is connected and fixed on the parking platform, and outputs direct current when the ambient solar energy is sufficient; the power supply input end of the power supply selection control module is respectively connected to the power supply output end of the high-voltage induction power supply module and the solar power generation panel, and the power supply output end of the power supply selection control module is connected to the battery.

[0006] Furthermore, the high-voltage induction power supply module includes: a CT energy supply coil, a front-end impact protection module, a rectifier and filter module, an overvoltage protection module and a DC / DC output module; the primary side of the CT energy supply coil is connected to the high-voltage cable, and the secondary side is connected to the front-end impact protection module; the rectifier and filter module rectifies and filters the AC power output from the secondary side of the CT energy supply coil into a stable DC power; the overvoltage protection module is connected to the rectifier and filter module; the front-end impact protection module is connected to both ends of the secondary side of the CT energy supply coil; the DC / DC output module is a pulse width modulation DC / DC step-down chip, which is used to convert a DC voltage into a fixed voltage value output.

[0007] Furthermore, the front-end impact protection module adopts a bidirectional transient suppression diode VD1, and its two ends are electrically connected to the two ends of the secondary side of the CT energy taking coil respectively; the rectification and filtering module includes a first rectification diode D1, a second rectification diode D2, a third rectification diode D3, a fourth rectification diode D4, a second resistor R2 and an electrolytic capacitor C1; wherein the first rectification diode D1, the second rectification diode D2, the third rectification diode D3 and the fourth rectification diode D4 constitute a rectification circuit; the second resistor R2 and the electrolytic capacitor C1 constitute a filtering circuit; the overvoltage protection module includes a first voltage monitoring chip N1, a first switch tube VT1, a second switch tube VT2 and a first pull-down resistor R1; wherein one end of the first pull-down resistor R1 is connected to the first switch The gate of the switch tube VT1 and the gate of the second switch tube VT2 are connected, and the other end of the first pull-down resistor R1 is connected to the ground; the VIN pin of the first voltage monitoring chip N1 is connected to the DC output side of the rectifier circuit, and the VOUT pin is connected to the gate of the first switch tube VT1 and the gate of the second switch tube VT2; the input port Vin of the DC / DC output module is grounded through the series resistors R3 and R4 in sequence, the On / Off port is connected to the connection node of the series resistors R3 and R4, the capacitor C6 is connected between the boost port BST and the output port LX, the output port LX outputs a fixed DC voltage through the inductor L, the front and rear ends of the inductor L are grounded through the Schottky diode and the capacitor C8 respectively, and the internal regulator output port VD is bypassed to the ground through the capacitor C7.

[0008] Furthermore, the power selection control module includes: a selection relay, a digital-to-analog conversion module and a single-chip microcomputer; one end of the selection relay is respectively connected to the output end of the high-voltage induction power supply module and the output end of the solar power generation panel, and the other end is connected to the battery; the input end of the digital-to-analog conversion module is respectively connected to the output end of the high-voltage induction power supply module and the output end of the solar power generation panel, and the output end is connected to the input end of the single-chip microcomputer; the output end of the single-chip microcomputer is connected to the battery.

[0009] Furthermore, a battery protection shell is fixed to the bottom of the parking platform, the battery is arranged in the battery protection shell, and the charging connector is arranged on one side of the battery protection shell.

[0010] Furthermore, communication signal boxes are provided on both sides of the battery protection housing away from the charging connector.

[0011] Beneficial effects of the utility model: Compared with the prior art, the utility model discloses a wireless charging device for drones that combines photovoltaic and CT inductive power supply. On the basis of utilizing existing environmental resources, an automatic switching, safe and reliable, noise-free, pollution-free, low failure rate, and easy-to-maintain photovoltaic power supply and CT inductive power supply switching implementation device is introduced to ensure that a stable power supply can be provided under different bus current conditions, which can power the inspection drone in real time and improve its inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A connection diagram of a wireless charging device for drones combining photovoltaic and CT induction power extraction provided by an embodiment of the utility model;

[0013] Figure 2 Schematic diagram of the front-end impact protection module, the rectification and filtering module and the overvoltage protection module provided by the embodiment of the utility model;

[0014] Figure 3 Schematic diagram of a DC / DC output module provided by an embodiment of the utility model;

[0015] Figure 4 A schematic diagram of a process for converting an electrical signal into an analog signal provided by an embodiment of the utility model;

[0016] Figure 5 The right side view of the parking platform structure provided by the embodiment of the utility model is schematically shown.

[0017] Among them, 1-solar power generation panel; 2-CT energy extraction coil; 3-high voltage cable; 4-parking platform; 5-battery protection shell; 6-communication signal box; 7-electromagnetic coil; 8-charging connector. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In this embodiment, a wireless charging device for drones that combines photovoltaic and CT induction power generation is provided. Figure 1As shown, it includes a wireless charging platform, a battery and a power taking control module; the wireless charging platform includes: a parking platform 4, an electromagnetic coil 7 is arranged in the parking platform 4; the battery is electrically connected to the electromagnetic coil 7 in the parking platform 4; the battery is connected to a charging connector 8, and the power taking control module is electrically connected to the charging connector 8.

[0020] The power supply control module in this embodiment includes a high-voltage induction power supply module, a solar power generation panel 1 and a power supply selection control module; the high-voltage induction power supply module obtains energy from the magnetic field around the high-voltage wires and outputs direct current; the solar power generation panel 1 is connected and fixed on the parking platform 4, and outputs direct current when the ambient solar energy is sufficient; the power supply input end of the power supply selection control module is respectively connected to the power supply output end of the high-voltage induction power supply module and the solar power generation panel 1, and the power supply output end of the power supply selection control module is connected to the battery.

[0021] The high-voltage induction power supply module described in this embodiment includes: a CT energy supply coil 2, a front-end impact protection module, a rectifier and filter module, an overvoltage protection module and a DC / DC output module; the primary side of the CT energy supply coil 2 is connected to the high-voltage cable 3, and the secondary side is connected to the front-end impact protection module, and then the rectifier and filter module, the overvoltage protection module, and the DC / DC output module are connected in sequence, and finally a stable DC voltage is output; the rectifier and filter module rectifies and filters the AC power output from the secondary side of the CT energy supply coil 2 into a stable DC power; the overvoltage protection module is connected to the rectifier and filter module to prevent the voltage output by the rectifier and filter module from being over-voltage and discharge excess energy; the front-end impact protection module is connected to both ends of the secondary side of the CT energy supply coil 2 to effectively protect the precision components in the electronic circuit from damage by various surge pulses; the DC / DC output module is a pulse width modulation DC / DC buck chip, which is used to convert a DC voltage into a fixed voltage value for output.

[0022] like Figure 2As shown, the front-end impact protection module in this embodiment adopts a bidirectional transient suppression diode VD1, and the two ends are respectively electrically connected to the two ends of the secondary side of the CT energy taking coil 2, so that the voltage between the two poles is clamped at a predetermined value. This embodiment selects XESD12VT23-3, a transient voltage suppression bidirectional array, which has the advantages of fast response time, large transient power, low leakage current, breakdown voltage deviation, easy control of clamping voltage, no damage limit and small size; the rectifier and filter module includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a second resistor R2 and an electrolytic capacitor C1; wherein the first rectifier diode D1, the second rectifier diode D2, the third rectifier diode D3 and the fourth rectifier diode D4 form a rectifier circuit; the second resistor R2 and the electrolytic capacitor C1 constitutes a filter circuit; the overvoltage protection module includes a first voltage monitoring chip N1, a first switch tube VT1, a second switch tube VT2 and a first pull-down resistor R1; wherein one end of the first pull-down resistor R1 is connected to the gate of the first switch tube VT1 and the gate of the second switch tube VT2, and the other end of the first pull-down resistor R1 is connected to the ground; the VIN pin of the first voltage monitoring chip N1 is connected to the DC output side of the rectifier circuit, and the VOUT pin is connected to the gate of the first switch tube VT1 and the gate of the second switch tube VT2, which is used to monitor the voltage value on the DC output side of the rectifier circuit. When the voltage value reaches the set protection voltage threshold, the VOUT pin of the first voltage monitoring chip N1 outputs a high level, controls the first switch tube VT1 and the second switch tube VT2 to be turned on, so that the secondary side of the CT is short-circuited to achieve energy discharge; Figure 3 As shown, the input port Vin of the DC / DC output module is connected to the ground through the series resistors R3 and R4 in turn, the On / Off port is connected to the connection node of the series resistors R3 and R4, the capacitor C6 is connected between the boost port BST and the output port LX, the output port LX outputs a fixed 5V DC voltage through the inductor L, the front and rear ends of the inductor L are respectively grounded through the Schottky diode Schotty and the capacitor C8, the Schottky diode is used as a freewheeling diode, and the reverse withstand voltage should exceed the maximum input voltage VC, and the internal regulator output port VD of the buck chip is bypassed to the ground through the capacitor C7. In this embodiment, the input voltage range of the buck chip is 7.5~76V, providing a fixed output voltage of 5V, the maximum value of the output current ILX is 1A, it works at a fixed switching frequency of 125kHz when overloaded, and automatically switches to the pulse skipping mode when lightly loaded to ensure low quiescent current and high efficiency.

[0023] The power selection control module in this embodiment includes: a selection relay, a digital-to-analog conversion module and a single-chip microcomputer; one end of the selection relay is connected to the output end of the high-voltage induction power module and the output end of the solar power generation panel 1 respectively, and the other end is connected to the battery; the input end of the digital-to-analog conversion module is connected to the output end of the high-voltage induction power module and the output end of the solar power generation panel 1 respectively, and the output end is connected to the input end of the single-chip microcomputer; the output end of the single-chip microcomputer is connected to the battery; Figure 4 As shown, the voltage output from the output end of the high-voltage induction power supply module and the output end of the solar panel 1 will be converted into an analog signal through the digital-to-analog conversion module, which is convenient for the single-chip microcomputer to monitor the two voltages, select the power supply with a high voltage to be in the on state to charge the battery, and the power supply module with a low voltage is in the off state.

[0024] In this embodiment, Figure 5 As shown, a battery protection shell 5 is fixed to the bottom of the parking platform 4 , the battery is arranged in the battery protection shell 5 , and the charging connector 8 is arranged on one side of the battery protection shell 5 .

[0025] In this embodiment, the battery protection shell 5 is provided with communication signal boxes 6 on both sides away from the charging connector 8. The communication signal boxes 6 are used to expand the signal transmission range, so that the drone wireless charging platform also serves as a small signal base station.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope defined by the claims of the utility model.

Claims

1. A wireless charging device for drones that combines photovoltaic and CT induction power extraction, characterized in that: The invention comprises a wireless charging platform, a storage battery and a power taking control module; the wireless charging platform comprises: a parking platform (4), wherein an electromagnetic coil (7) is arranged in the parking platform; the storage battery is electrically connected to the electromagnetic coil (7) in the parking platform (4); the storage battery is connected to a charging connector (8), and the power taking control module is electrically connected to the charging connector (8); The power taking control module comprises a high-voltage induction power taking module, a solar power generation panel (1) and a power selection control module; the high-voltage induction power taking module obtains energy from the magnetic field around the high-voltage wire and outputs direct current; the solar power generation panel (1) is connected and fixed on the parking platform (4) and outputs direct current when the ambient solar energy is sufficient; the power input end of the power selection control module is respectively connected to the power output end of the high-voltage induction power taking module and the solar power generation panel (1), and the power output end of the power selection control module is connected to a storage battery.

2. According to claim 1, a wireless charging device for unmanned aerial vehicles combining photovoltaic and CT induction power collection is characterized in that: The high-voltage induction power supply module comprises: a CT power supply coil (2), a front-end impact protection module, a rectifier filter module, an overvoltage protection module and a DC / DC output module; the primary side of the CT power supply coil (2) is connected to a high-voltage cable (3), and the secondary side is connected to the front-end impact protection module; the rectifier filter module rectifies and filters the alternating current output from the secondary side of the CT power supply coil (2) into a stable direct current; the overvoltage protection module is connected to the rectifier filter module; the front-end impact protection module is connected to both ends of the secondary side of the CT power supply coil (2); and the DC / DC output module is a pulse width modulation type DC / DC buck chip, used to convert a direct current voltage into a fixed voltage value for output.

3. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power extraction according to claim 2 is characterized in that: The front-end impact protection module adopts a bidirectional transient suppression diode VD1, and both ends are electrically connected to the two ends of the secondary side of the CT energy extraction coil (2) respectively.

4. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 2 is characterized in that: The rectification and filtering module includes a first rectifier diode D1, a second rectifier diode D2, a third rectifier diode D3, a fourth rectifier diode D4, a second resistor R2 and an electrolytic capacitor C1; wherein the first rectifier diode D1, the second rectifier diode D2, the third rectifier diode D3 and the fourth rectifier diode D4 constitute a rectifier circuit; the second resistor R2 and the electrolytic capacitor C1 constitute a filtering circuit.

5. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 2 is characterized in that: The overvoltage protection module includes a first voltage monitoring chip N1, a first switch tube VT1, a second switch tube VT2 and a first pull-down resistor R1; wherein one end of the first pull-down resistor R1 is connected to the gate of the first switch tube VT1 and the gate of the second switch tube VT2, and the other end of the first pull-down resistor R1 is connected to the ground; the VIN pin of the first voltage monitoring chip N1 is connected to the DC output side of the rectifier bridge, and the VOUT pin is connected to the gate of the first switch tube VT1 and the gate of the second switch tube VT2.

6. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 2 is characterized in that: The input port Vin of the DC / DC output module is grounded through the series resistors R3 and R4 in sequence, the On / Off port is connected to the connection node of the series resistors R3 and R4, the capacitor C6 is connected between the boost port BST and the output port LX, the output port LX outputs a fixed DC voltage through the inductor L, the front and rear ends of the inductor L are grounded through the Schottky diode and the capacitor C8 respectively, and the internal regulator output port VD is bypassed to the ground through the capacitor C7.

7. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 1 is characterized in that: The power selection control module comprises: a selection relay, a digital-to-analog conversion module and a single-chip microcomputer; one end of the selection relay is respectively connected to the output end of the high-voltage induction power taking module and the output end of the solar power generation panel (1), and the other end is connected to a storage battery; the input end of the digital-to-analog conversion module is respectively connected to the output end of the high-voltage induction power taking module and the output end of the solar power generation panel (1), and the output end is connected to the input end of the single-chip microcomputer; the output end of the single-chip microcomputer is connected to the storage battery.

8. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 1 is characterized in that: A battery protection shell (5) is fixed to the bottom of the parking platform (4), the storage battery is arranged in the battery protection shell (5), and the charging connector (8) is arranged on one side of the battery protection shell (5).

9. The unmanned aerial vehicle wireless charging device combining photovoltaic and CT induction power collection according to claim 8 is characterized in that: Communication signal boxes (6) are provided on both sides of the battery protection housing (5) away from the charging connector (8).

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