CN203871930U - Charging system for unmanned aerial vehicle - Google Patents
Charging system for unmanned aerial vehicle Download PDFInfo
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- CN203871930U CN203871930U CN201420119513.XU CN201420119513U CN203871930U CN 203871930 U CN203871930 U CN 203871930U CN 201420119513 U CN201420119513 U CN 201420119513U CN 203871930 U CN203871930 U CN 203871930U
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Abstract
A charging system for an unmanned aerial vehicle is characterized by comprising a power taking device installed on an overhead power transmission line, an electric power transmission device converting a mains-frequency alternating current to a high-frequency alternating current, an electric power reception device arranged on an unmanned aerial vehicle, and a vehicle-mounted battery arranged on the unmanned aerial vehicle and supplying the unmanned aerial vehicle with power. Electric power transmission between the electric power reception device and the electric power transmission device are achieved wirelessly. The vehicle-mounted battery is connected in series to a current loop of the electric power reception device. Compared with the prior art, the utility model provides the electric unmanned aerial vehicle charging system based on an overhead AC power transmission line, realizes automatic safe charging of the unmanned aerial vehicle, and improves the mileage of the unmanned aerial vehicle. Meanwhile, a high-frequency inductive constant-current charging circuit based on unstable AC power supply is provided. Completely-unmanned charging operation is realized, so that the unmanned aerial vehicle is less dependent on ground bases or mobile base stations, manual operation is reduced, and the labor cost is lowered.
Description
Technical field
The utility model relates to a kind of charging system, particularly a kind of charging system for unmanned aerial vehicle.
Background technology
Along with the development in epoch, society is day by day strong to the demand of executing the task in the air.And compared with manned aircraft, unmanned plane is having many unrivaled advantages: size is relatively little, total arrangement is flexible, and cost is lower, easy to use, can enter hazardous environment, can meet the demand of special purpose.
Electronic unmanned plane refers to dependence motor instead of oil-engine driven aircraft, and power source comprises the battery of fuel cell, solar cell, ultracapacitor, wireless energy transfer or other kinds etc.It is combustion engine powered that electric airplane uses electric power propulsion system to replace, and obtained lot of advantages and unique quality, and the most outstanding advantage is energy-conserving and environment-protective, and efficiency is high, energy consumption is low; In addition, also have safe and reliable (can not blast and fuel leakage), simple in structure, operate the features such as easy to use, maintainability is good.Nowadays, electronic unmanned plane can be in low latitude, zonule is carried out high accuracy and taken photo by plane and monitor, have efficiency high, than there being people to drive the much lower feature of helicopter use cost, can be used as aerial work platform, carry the equipment such as high-resolution digital camera, optical camera, as required whole region is scanned, or highest priority is taken, monitored.Unmanned plane application is not only militarily extensively paid attention to, and also more and more receives publicity in people's livelihood field.
Existing electronic unmanned plane normally returns to earth base in the time that needs charge, and then battery is disassembled to charging or changes battery, and the shortcoming that this mode causes is thus: first, the working flight radius of unmanned aerial vehicle is little.Because continuation of the journey is subject to the restriction of battery capacity and performance, unmanned aerial vehicle cannot aloft fly for a long time, just need to return to earth base in the time of running down of battery; Secondly, need a large amount of manual work.Although the distribution density that increases earth base or ground moving base station can improve the radius of clean-up of unmanned aerial vehicle, setting up of multiple bases or mobile base station need to drop into more man power and material, greatly increases Financial cost.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of charging system for unmanned aerial vehicle that expands flying radius and effectively reduce manual work amount for above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of charging system for unmanned aerial vehicle, is characterized in that: this charging system includes
Electricity getting device, is installed on overhead transmission line;
Electric energy transmission device, is converted to high-frequency alternating current by industrial-frequency alternating current, and this electric energy transmission device is arranged on the shaft tower of overhead transmission line, described electricity getting device by ac bus by delivery of electrical energy to described electric energy transmission device;
Electric energy receiving system, receives from the electric energy of described electric energy transmission device, and this electric energy receiving system is arranged on unmanned aerial vehicle, between described electric energy receiving system and described electric energy transmission device by the wireless delivery of electrical energy of realizing; And
On-board batteries, is arranged on unmanned aerial vehicle and to this unmanned aerial vehicle power supply, and described on-board batteries is serially connected on the current circuit of described electric energy receiving system.
Overhead transmission line can adopt multiple distributed architecture, and as preferably, described overhead transmission line can be the twisted wire of the multi cord composition of the twisted wire of the single cord composition by electric current or the not mutually insulated by electric current.
For meeting electric current, the voltage requirements of different charging circuits, as preferably, the electricity getting device that can be arranged at intervals with multiple series connection or be connected in parallel on described overhead transmission line.
Change for the ease of assembling and convenient for maintaining, as preferably, described electricity getting device include two structures identical and symmetrically amalgamation in the electric unit of adopting together, each electric unit of adopting includes insulating barrier, magnetic core and is correspondingly set around one group of electricity taking coil on described magnetic core, every group of electricity taking coil has two outputs, described electricity getting device has four ac output ends after described rectifier rectification, described overhead transmission line is located in by adopting described in two in the vestibule forming after the insulating barrier amalgamation of electric unit, and described magnetic core is sheathed on outside described insulating barrier.Electricity getting device adopts modularized design, is independently to adopt electric unit by two to be put together, and can realize more flexile circuit connection structure, to meet the demand of different voltage, electric current; And facilitate processing and follow-up maintenance, reduce and produce and maintenance cost; In addition, the electricity getting device of this Modular Structure Design also has circuit fault-tolerant ability.
As preferably, described electric energy transmission device includes pulse width modulation rectifier and high-frequency inverter, the output of described electricity getting device is connected with the input of described pulse width modulation rectifier, the input of described pulse width modulation rectifier output and described high-frequency inverter is connected, and is direct current connection between described pulse width modulation rectifier and high-frequency inverter; The control circuit of described electric energy receiving system includes high-frequency rectification charger; Between described electric energy transmission device and electric energy receiving system, realize wireless power transmission by high-frequency induction transformer.
As preferably, described pulse width modulation rectifier can include direct-flow positive pole output, direct current cathode output end, the first diode, the second diode, the 3rd diode, the 4th diode, the first electric capacity, the first electronic switch, the second electronic switch, the 3rd electronic switch and quadrielectron switch; Wherein, the first ac output end Yi road of described electricity getting device is connected with the positive pole of described the first diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described the first electronic switch; The second ac output end Yi road of described electricity getting device is connected with the positive pole of described the second diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described the second electronic switch; The 3rd ac output end Yi road of described electricity getting device is connected with the positive pole of described the 3rd diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described the 3rd electronic switch; The 4th ac output end Yi road of described electricity getting device is connected with the positive pole of described the 4th diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described quadrielectron switch; After connecing altogether, the negative pole of described the first diode, the negative pole of described the second diode, the negative pole of described the 3rd diode and the negative pole of described the 4th diode be connected to the direct-flow positive pole output of described pulse width modulation rectifier; The two ends of described the first electric capacity are connected to direct-flow positive pole output and the direct current cathode output end of described pulse width modulation rectifier.
Preferred as another, described pulse width modulation rectifier includes direct-flow positive pole output, direct current cathode output end, the first diode, the second diode, the 3rd diode, the 4th diode, the first electric capacity, the first electronic switch, the second electronic switch, the 3rd electronic switch and quadrielectron switch; Wherein, the first ac output end Yi road of described electricity getting device is connected with the negative pole of described the first diode, and another road is connected to the direct-flow positive pole output of described pulse width modulation rectifier through described the first electronic switch; The second ac output end Yi road of described electricity getting device is connected with the negative pole of described the second diode, and another road is connected to the direct-flow positive pole output of described pulse width modulation rectifier through described the second electronic switch; The 3rd ac output end Yi road of described electricity getting device is connected with the positive pole of described the 3rd diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described the 3rd electronic switch; The 4th ac output end Yi road of described electricity getting device is connected with the positive pole of described the 4th diode, and another road is connected to the direct current cathode output end of described pulse width modulation rectifier through described quadrielectron switch; The positive pole of the positive pole of described the first diode and described the second diode is connected to the direct current cathode output end of described pulse width modulation rectifier after connecing altogether; The negative pole of the negative pole of described the 3rd diode and described the 4th diode is connected to the direct-flow positive pole output of described pulse width modulation rectifier after connecing altogether; The two ends of described the first electric capacity are connected to direct-flow positive pole output and the direct current cathode output end of described pulse width modulation rectifier.
Above-mentioned pulse width modulation rectifier is driven by PI closed loop controller, this PI closed loop controller has four road pulse-width modulated output signals, and pulse-width modulated output signal drives respectively the gate pole of the first electronic switch, the second electronic switch, the 3rd electronic switch and quadrielectron switch.
Above-mentioned two kinds of pulse width modulation rectifier circuit have ensured the one-way flow of electric energy, having realized can the control of power taking current sinusoidal and power factor correction, eliminate completely the low-order harmonic of electrical network has been injected, solve the problem that changes the charging voltage shakiness causing due to overhead wire current amplitude, made the quality of power supply of power transmission lines obtain improvement; Because electricity getting device coil itself has enough inductance, realize current filtering without increasing extra inductance, thereby make weight saving, the cost of system.
As preferably, described the first electronic switch, the second electronic switch, the 3rd electronic switch and quadrielectron switch can be various existing electron electric power switches, if above-mentioned each electronic switch can be any one or the combination in metal-oxide-semiconductor field effect transistor (MOSFET) or PN junction type field-effect transistor (JFET) or triode (BJT) or insulated gate bipolar transistor (IGBT).
As preferably; on the shaft tower of described overhead transmission line, insulator is installed; the top of described insulator is provided with described electric energy transmission device; the top of described electric energy transmission device is provided with can be for the shutdown platform of unmanned plane landing; wherein, described electric energy transmission device includes the magnetic sheet of multiple spaced and parallel spread configurations and is set around the inductive charging coil in the magnetic groove of described magnetic sheet.Electric energy transmission device uses the spaced structure of multiple magnetic sheets, adopt lightweight Magnetic Core Design, can reduce overall volume and weight, facilitate electric energy transmission device to be arranged on overhead wire shaft tower, make full use of space on shaft tower and allow unmanned aerial vehicle drop on electric energy transmission device to charge.
Compared with prior art, the utility model has the advantage of: proposed a kind of electronic unmanned aerial vehicle charging system based on ac transmission overhead wire, realize complete autonomous, the safe charging modes of unmanned plane, thereby expand the unmanned plane during flying radius of clean-up, not only promote electronic unmanned aerial vehicle course continuation mileage, and even realize unlimited continuation of the journey in the region of laying built on stilts AC power line, but also can reduce unmanned aerial vehicle onboard battery volume and weight; Simultaneously, because the electricity of obtaining from overhead wire is along with electrical network load variations changes, the application's charging system provide a kind of based on unstable AC power, high-frequency induction constant current type charging circuit, between electric energy transmission device and electric energy receiving system, can adopt wireless transmission method to realize electrodeless contact charging, needn't dismantle battery and charge by high-frequency induction, realize unmanned charging operations completely, reduce the dependence of unmanned plane to earth base or mobile base station, improve the intelligent degree of charging, reduce manual work, reduce human cost.
Brief description of the drawings
Fig. 1 is the charging system theory diagram of the utility model embodiment.
Fig. 2 is the electricity getting device structural representation of the utility model embodiment.
Fig. 3 is the electricity getting device equivalent circuit diagram of the utility model embodiment.
Fig. 4 is one of electricity getting device mounting circuit structural representation of the utility model embodiment.
Fig. 5 be the utility model embodiment electricity getting device mounting circuit structural representation two.
Fig. 6 is one of pulse width modulation rectifier electrical block diagram of the utility model embodiment.
Fig. 7 be the utility model embodiment pulse width modulation rectifier electrical block diagram two.
Fig. 8 is the circuit function block diagram of the inductive charge circuit of the utility model embodiment.
Fig. 9 is one of physical circuit johning knot composition of high-frequency induction charging circuit shown in Fig. 8.
Figure 10 be high-frequency induction charging circuit shown in Fig. 8 physical circuit johning knot composition two.
Figure 11 is the structural representation of the electric energy transmission device of the utility model embodiment.
Figure 12 is the control principle drawing of the pulse width modulation rectifier circuit of the utility model embodiment.
Figure 13 is the control principle drawing of the high-frequency induction charging circuit of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1～13, the present embodiment relates to a kind of charging system for unmanned aerial vehicle, and this charging system includes electricity getting device 1, electric energy transmission device 2, electric energy receiving system 3 and on-board batteries 4; Electricity getting device 1 is installed on overhead transmission line 14, and overhead transmission line 14 can or can be the twisted wire of the multi cord composition of the not mutually insulated by electric current for the twisted wire of the single cord composition by electric current; On the shaft tower of overhead transmission line 14, insulator is installed, the top of insulator is provided with electric energy transmission device 2, electric energy transmission device 2 can, for industrial-frequency alternating current is converted to high-frequency alternating current for wireless charging, also can be converted to industrial-frequency alternating current direct current for wired charging; Electricity getting device 1 by ac bus by delivery of electrical energy to electric energy transmission device 2; The below of electric energy transmission device 2 is provided with insulation board, the top of electric energy transmission device 2 is provided with can be for the shutdown platform of unmanned plane landing, electric energy receiving system 3 receives the electric energy from electric energy transmission device 2, this electric energy receiving system 3 is arranged on unmanned aerial vehicle, can be by the wired or wireless delivery of electrical energy of realizing between electric energy receiving system 3 and electric energy transmission device 2; On-board batteries 4 is arranged on unmanned aerial vehicle and to this unmanned aerial vehicle power supply, and on-board batteries 4 is serially connected on the current circuit of electric energy receiving system 3.
Wherein, electricity getting device 1 adopts modularized design, this electricity getting device include two structures identical and symmetrically amalgamation in together independently adopt electric unit, each electric unit of adopting includes insulating barrier 13, magnetic core 11 and be correspondingly set around one group of electricity taking coil 12 on this magnetic core 11, referring to Fig. 2, adopt after electric unit amalgamation for two, formed the dead ring of a sealing by two half-turn insulating barriers 13, two half-turn magnetic cores 11 form the magnet ring of a sealing, overhead transmission line 14 is located in the vestibule of whole dead ring, magnetic core 11 is sheathed on outside insulating barrier 13, be that magnet ring is sheathed on outside dead ring, overhead transmission line 14 is positioned at the center of dead ring.
The electricity getting device of the present embodiment has two groups of electricity taking coils 12, every group of electricity taking coil 12 has two outputs, as shown in Figure 3, for the equivalent electric circuit of the present embodiment electricity getting device, To in this equivalent electric circuit is overhead transmission line 14, Ta represent electricity getting device one of them adopt the electricity taking coil 12 in electric unit, Tb represents electricity getting device, and another adopts the electricity taking coil 12 in electric unit, be positioned at To and Ta, between Tb is the magnetic core 11 of electricity getting device, AP, AN is two ac output ends of first group of electricity taking coil 12, BP, BN is two ac output ends of second group of electricity taking coil 12, after rectifier rectification, there are four ac output ends by two electricity getting devices of independently adopting after electric unit amalgamation.The alternating current of overhead transmission line 14 produces AC magnetic field in the magnetic core 11 of electricity getting device, thereby produces identical induced electromotive force at the delivery outlet AP of two groups of electricity taking coils 12 with on AN, BP and BN.
On overhead transmission line 14, multiple electricity getting devices can be installed, multiple electricity getting devices can connect to meet different voltage, electric current demand by series and parallel structure.As shown in Figure 4, on the peace overhead transmission line 14 of electricity getting device, be arranged at intervals with multiple electricity getting devices that are connected in series.As shown in Figure 5, on overhead transmission line 14, be arranged at intervals with multiple electricity getting devices that are connected in parallel.
Between the electric energy transmission device 2 of the present embodiment and electric energy receiving system 3, be to adopt wireless power delivery mode to realize induction charging, as shown in Figure 8, electric energy transmission device 2 includes pulse width modulation rectifier 21 and high-frequency inverter 22, and the control circuit of electric energy receiving system 3 includes high-frequency rectification charger 31; The output of electricity getting device 1 is connected with the input of pulse width modulation rectifier 21, and pulse width modulation rectifier 21 outputs are connected with the input of high-frequency inverter 22, is direct current connection between pulse width modulation rectifier 21 and high-frequency inverter 22; Between electric energy transmission device 2 and electric energy receiving system 3, realize wireless power transmission by high-frequency induction transformer Tc.Wherein, high-frequency induction transformer Tc includes elementary wireless power transmission coil 23, secondary wireless electric coil 32, elementary wireless power transmission magnetic core 24 and the secondary wireless electromagnet core 33 that is subject to of being subject to, and elementary wireless power transmission magnetic core 24 and the secondary wireless electromagnet core 33 that is subject to can be permeability magnetic material or air.
Wherein, pulse width modulation rectifier 21 can adopt following two kinds of circuit structures to realize: this pulse width modulation rectifier 21 includes direct-flow positive pole output DC+, direct current cathode output end DC-, the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4, the first capacitor C 1, the first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3 and quadrielectron K switch 4; The first ac output end AP mono-tunnel of electricity getting device is connected with the positive pole of the first diode D1, and another road the first electronic switch K1 is connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; The second ac output end AN mono-tunnel of electricity getting device is connected with the positive pole of the second diode D2, and another road the second electronic switch K2 is connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; The 3rd ac output end BP mono-tunnel of electricity getting device is connected with the positive pole of the 3rd diode D3, and another Lu Jing tri-electronic switch K3 are connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; The 4th ac output end BN mono-tunnel of electricity getting device is connected with the positive pole of the 4th diode D4, and another Lu Jing quadrielectron K switch 4 is connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; After connecing altogether, the negative pole of the first diode D1, the negative pole of the second diode D2, the negative pole of the 3rd diode D3 and the negative pole of the 4th diode D4 be connected to the direct-flow positive pole output DC+ of pulse width modulation rectifier 21; The two ends of the first capacitor C 1 are connected to direct-flow positive pole output DC+ and the direct current cathode output end DC-of pulse width modulation rectifier 21.
The another kind of circuit connection structure of pulse width modulation rectifier 21 is: the first ac output end AP mono-tunnel of electricity getting device is connected with the negative pole of the first diode D1, and another road the first electronic switch K1 is connected to the direct-flow positive pole output DC+ of pulse width modulation rectifier 21; The second ac output end AN mono-tunnel of electricity getting device is connected with the negative pole of the second diode D2, and another road the second electronic switch K2 is connected to the direct-flow positive pole output DC+ of pulse width modulation rectifier 21; The 3rd ac output end BP mono-tunnel of electricity getting device is connected with the positive pole of the 3rd diode D3, and another Lu Jing tri-electronic switch K3 are connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; The 4th ac output end BN mono-tunnel of electricity getting device is connected with the positive pole of the 4th diode D4, and another Lu Jing quadrielectron K switch 4 is connected to the direct current cathode output end DC-of pulse width modulation rectifier 21; The positive pole of the positive pole of the first diode D1 and the second diode D2 is connected to the direct current cathode output end DC-of pulse width modulation rectifier 21 after connecing altogether; The negative pole of the negative pole of the 3rd diode D3 and the 4th diode D4 is connected to the direct-flow positive pole output DC+ of pulse width modulation rectifier 21 after connecing altogether; The two ends of the first capacitor C 1 are connected to direct-flow positive pole output DC+ and the direct current cathode output end DC-of pulse width modulation rectifier 21.
The first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3 and quadrielectron K switch 4 in above-mentioned pulse width modulation rectifier 21 circuit are electronic power switch device, can be any one or combination in metal-oxide-semiconductor field effect transistor (MOSFET) or PN junction type field-effect transistor (JFET) or triode (BJT) or insulated gate bipolar transistor (IGBT).
Above-mentioned two kinds of pulse width modulation rectifier 21 circuit have all ensured that electric energy can only flow into DC side from AC, and cannot reverse flow, and this is extremely important for maintaining the stabilization of power grids.
Meanwhile, also very important of the harmonic wave that suppresses to inject AC network side, for this reason, the way of realization of above-mentioned two kinds of pulse width modulation rectifier 21 circuit can be used same control principle, to realize the object of controlling VD and eliminating grid side harmonic wave.Suppress the control principle drawing of harmonic wave referring to Figure 12, voltage regulator uses PI closed loop controller, current regulator also uses PI closed loop controller, this PI closed loop controller has four road pulse-width modulated output signals, four electronic switches in the output gate leve drive pulse width modulation rectifier 21 of pulse width modulation (PWM) module, the pulse-width modulated output signal of PI closed loop controller is connected to respectively the gate leve of the first electronic switch K1, the second electronic switch K2, the 3rd electronic switch K3 and quadrielectron K switch 4 these four electronic switches.Under this control mode, can there is respectively just contrary second harmonic component of phase place in the ac input end mouth AP of above-mentioned two kinds of pulse width modulation rectifiers 21 and AN, BP and BN, so due to phase place just in time contrary these second harmonic component can in the magnetic core of electricity getting device 11, cancel each other, make to only have sine wave to act on overhead transmission line 14, inject overhead transmission line 14 and do not have harmonic wave, ensure stability and the transmission of electricity quality of electrical network.
The present embodiment can be selected two kinds of high-frequency induction charging circuits, the first is disresonance type inductive charge circuit, referring to Fig. 9, particularly, high-frequency inverter 22 includes the 5th electronic switch K5, the 6th electronic switch K6, the 7th electronic switch K7 and the 8th electronic switch K8, and high-frequency rectification charger 31 includes the 9th electronic switch K9, the tenth electronic switch K10, the 11 electronic switch K11, the 12 electronic switch K12, the second capacitor C 2 and the first inductance L 1; Pulse width modulation rectifier 21 includes direct-flow positive pole output DC+ and direct current cathode output end DC-;
Wherein, direct-flow positive pole output DC+Yi road the 5th electronic switch K5 of pulse width modulation rectifier 21 is connected to elementary wireless power transmission coil 23 first input ends of high-frequency induction transformer Tc, and another Lu Jing six electronic switch K6 are connected to the second input of the elementary wireless power transmission coil 23 of high-frequency induction transformer Tc; Direct current cathode output end DC-Yi road the 7th electronic switch K7 of pulse width modulation rectifier 21 is connected to elementary wireless power transmission coil 23 first input ends of high-frequency induction transformer Tc, and another Lu Jing eight electronic switch K8 are connected to elementary wireless power transmission coil 23 second inputs of high-frequency induction transformer Tc; Secondary wireless electric coil 32 first input end one tunnel the tenth electronic switch K10 that are subject to of high-frequency induction transformer Tc are connected with one end of the second capacitor C 2, another Lu Jing 12 electronic switch K12 are connected with the other end of the second capacitor C 2, secondary wireless electric coil 32 second input one tunnel the 9th electronic switch K9 that are subject to of high-frequency induction transformer Tc are connected with one end of the second capacitor C 2, and another Lu Jing 11 electronic switch K11 are connected with the other end of the second capacitor C 2; One end first inductance L 1 of the second capacitor C 2 is connected with the positive pole of on-board batteries 4, and the other end of the second capacitor C 2 connects the negative pole of on-board batteries 4.
The wireless magnetic permeability of electromagnet core that is subject to that disresonance type inductive charge circuit is applicable to high-frequency induction transformer Tc is high, the situation that leakage field is few, the control principle of this disresonance type inductive charge circuit is as shown in figure 13: the phase-angle regulator in figure is PI closed loop controller, four electronic switches in high-frequency inverter 22 carry out speed-sensitive switch with frequency (Fs hertz) and 50% duty ratio of fixing, produce the elementary wireless power transmission coil 23 of high frequency voltage excitation high-frequency induction transformer Tc, thus at elementary wireless power transmission magnetic core 24, the secondary wireless high frequency magnetic linkage that is subject to produce in electromagnet core 33, and secondary wireless be subject to electric coil 32 in induction produce the electromotive force of same frequency.Four electronic switches in high-frequency rectification charger 31 also carry out speed-sensitive switch with Fs hertz and 50% duty ratio of fixing, the phase angle of the high frequency voltage waveform that the high frequency voltage waveform producing by control high-frequency rectification charger 31 produces with respect to high-frequency inverter 22, realizes the constant current charge to on-board batteries 4.
Not tight when the magnetic coupling of unmanned plane and charging platform, just must use the second resonant mode inductive charge circuit.Resonant mode inductive charge circuit and disresonance type inductive charge circuit difference are structurally: (1) has increased resonant capacitance; (2) the wireless magnetic permeability of electromagnet core that is subject to of high-frequency induction transformer Tc is lower, and leakage field is larger.
Particularly, referring to Figure 10, identical shown in basic circuit syndeton and Fig. 9, difference is to set up the 3rd capacitor C 3 as resonant capacitance on the basis of high-frequency inverter 22 circuit of former Fig. 9, elementary wireless power transmission coil 23 second inputs of the 3rd capacitor C 3 one end and high-frequency induction transformer Tc are connected, and the other end of the 3rd capacitor C 3 is connected through the direct current cathode output end DC-of the 8th electronic switch K8 and pulse width modulation rectifier 21.
The the 5th～the 12 electronic switch K12 in above-mentioned two kinds of inductive charge circuit is electronic power switch device, can be any one or combination in metal-oxide-semiconductor field effect transistor (MOSFET) or PN junction type field-effect transistor (JFET) or triode (BJT) or insulated gate bipolar transistor (IGBT); The second capacitor C 2 is filter capacitor, and the first inductance L 1 is filter inductance, and the electric current that flows into on-board batteries 4 from the first inductance L 1 is DC charging point electric current.
The control mode of resonant mode inductive charge circuit and disresonance type inductive charge circuit are basic identical, except a bit: switching frequency Fs need to according to system resonance point arrange, resonance point depends on elementary wireless power transmission coil 23 and secondary wireless inductance value and the 3rd capacitor C 3(resonant capacitance that is subject to electric coil 32 of the system medium-high frequency sensor transformer Tc of concrete installation) capacitance.
The electric energy transmission device 2 of the present embodiment includes the magnetic sheet 24 ' of multiple spaced and parallel spread configurations and is set around the inductive charging coil 23 ' in the magnetic groove of magnetic sheet 24 ', magnetic sheet 24 ' is equivalent to the elementary wireless power transmission magnetic core 24 of high-frequency induction transformer Tc, inductive charging coil 23 ' is equivalent to the elementary wireless power transmission coil 23 of high-frequency induction transformer Tc, referring to Figure 11, multiple magnetic sheets 24 ' each other spaced apart and form keel structure, the total weight that alleviates electric energy transmission device 2 with this, inductive charging coil 23 ' is wrapped in the magnetic groove of magnetic sheet 24 '.
The electric energy transmission device 2 of the present embodiment is also integrated with automatic heating snow removing function; high-frequency inverter 22 applies high frequency voltage to the elementary wireless power transmission coil 23 of high-frequency induction transformer Tc; make the elementary wireless power transmission coil 23 of high-frequency induction transformer Tc due to self-resistance heating; make the elementary wireless power transmission magnetic core 24 of high-frequency induction transformer Tc due to self core loss heating simultaneously, reach the object of the snow melting on the shutdown platform of making way for electric energy transmission device 2 tops.
The present embodiment has been realized the automatic charging of unmanned aerial vehicle, has expanded the flying radius of unmanned aerial vehicle, has reduced the participation of manual work, has improved the intelligent degree of unmanned aerial vehicle charging.Owing to having adopted novel electricity getting device structure, by two each other circuit single-turn transformer independent, electromagnetic coupled overhead transmission line 14 is adopted to electricity, thereby realized more flexile circuit structure, facilitate production installation and maintenance; This novel electricity getting device is in conjunction with pulse width modulation rectifier circuit and the high-frequency induction charging circuit of the present embodiment, effectively solve unmanned aerial vehicle changes the charging voltage shakiness causing in the time of charging problem due to overhead transmission line 14 current amplitudes, also solve the problem that grid side harmonic wave suppresses simultaneously, ensured the reliability and stability of network operation.
Claims (8)
1. for a charging system for unmanned aerial vehicle, it is characterized in that: this charging system includes
Electricity getting device (1), is installed on overhead transmission line (14);
Electric energy transmission device (2), industrial-frequency alternating current is converted to high-frequency alternating current, this electric energy transmission device (2) is arranged on the shaft tower of overhead transmission line (14), described electricity getting device (1) by ac bus by delivery of electrical energy to described electric energy transmission device (2);
Electric energy receiving system (3), receive the electric energy from described electric energy transmission device (2), this electric energy receiving system (3) is arranged on unmanned aerial vehicle, between described electric energy receiving system (3) and described electric energy transmission device (2) by the wireless delivery of electrical energy of realizing; And
On-board batteries (4), is arranged on unmanned aerial vehicle and to this unmanned aerial vehicle power supply, and described on-board batteries (4) is serially connected on the current circuit of described electric energy receiving system (3).
2. the charging system for unmanned aerial vehicle according to claim 1, it is characterized in that: on described overhead transmission line (14), multiple described electricity getting devices (1) are installed, between the output of described electricity getting device (1), connect by serial or parallel connection mode.
3. the charging system for unmanned aerial vehicle according to claim 1, it is characterized in that: described electricity getting device include two structures identical and symmetrically amalgamation in the electric unit of adopting together, each electric unit of adopting includes insulating barrier (13), magnetic core (11) and be correspondingly set around the one group of electricity taking coil (12) on described magnetic core (11), every group of electricity taking coil (12) has two outputs, described electricity getting device has four ac output ends after rectifier rectification, described overhead transmission line (14) is located in by adopting described in two in the vestibule forming after insulating barrier (13) amalgamation of electric unit, described magnetic core (11) is sheathed on outside described insulating barrier (13).
4. the charging system for unmanned aerial vehicle according to claim 3, it is characterized in that: described electric energy transmission device (2) includes pulse width modulation rectifier (21) and high-frequency inverter (22), the output of described electricity getting device (1) is connected with the input of described pulse width modulation rectifier (21), described pulse width modulation rectifier (21) output is connected with the input of described high-frequency inverter (22), is direct current connection between described pulse width modulation rectifier (21) and high-frequency inverter (22); The control circuit of described electric energy receiving system (3) includes high-frequency rectification charger (31); Between described electric energy transmission device (2) and electric energy receiving system (3), realize wireless power transmission by high-frequency induction transformer (Tc).
5. the charging system for unmanned aerial vehicle according to claim 4, is characterized in that: described pulse width modulation rectifier (21) includes direct-flow positive pole output (DC+), direct current cathode output end (DC-), the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4), the first electric capacity (C1), the first electronic switch (K1), the second electronic switch (K2), the 3rd electronic switch (K3) and quadrielectron switch (K4);
Wherein, the first ac output end (AP) Yi road of described electricity getting device is connected with the positive pole of described the first diode (D1), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described the first electronic switch (K1); The second ac output end (AN) Yi road of described electricity getting device is connected with the positive pole of described the second diode (D2), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described the second electronic switch (K2); The 3rd ac output end (BP) Yi road of described electricity getting device is connected with the positive pole of described the 3rd diode (D3), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described the 3rd electronic switch (K3); The 4th ac output end (BN) Yi road of described electricity getting device is connected with the positive pole of described the 4th diode (D4), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described quadrielectron switch (K4); After connecing altogether, the negative pole of described the first diode (D1), the negative pole of described the second diode (D2), the negative pole of described the 3rd diode (D3) and the negative pole of described the 4th diode (D4) be connected to the direct-flow positive pole output (DC+) of described pulse width modulation rectifier (21); The two ends of described the first electric capacity (C1) are connected to direct-flow positive pole output (DC+) and the direct current cathode output end (DC-) of described pulse width modulation rectifier (21).
6. the charging system for unmanned aerial vehicle according to claim 4, is characterized in that: described pulse width modulation rectifier (21) includes direct-flow positive pole output (DC+), direct current cathode output end (DC-), the first diode (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4), the first electric capacity (C1), the first electronic switch (K1), the second electronic switch (K2), the 3rd electronic switch (K3) and quadrielectron switch (K4);
Wherein, the first ac output end (AP) Yi road of described electricity getting device is connected with the negative pole of described the first diode (D1), and another road is connected to the direct-flow positive pole output (DC+) of described pulse width modulation rectifier (21) through described the first electronic switch (K1); The second ac output end (AN) Yi road of described electricity getting device is connected with the negative pole of described the second diode (D2), and another road is connected to the direct-flow positive pole output (DC+) of described pulse width modulation rectifier (21) through described the second electronic switch (K2); The 3rd ac output end (BP) Yi road of described electricity getting device is connected with the positive pole of described the 3rd diode (D3), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described the 3rd electronic switch (K3); The 4th ac output end (BN) Yi road of described electricity getting device is connected with the positive pole of described the 4th diode (D4), and another road is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21) through described quadrielectron switch (K4); After connecing altogether, the positive pole of the positive pole of described the first diode (D1) and described the second diode (D2) is connected to the direct current cathode output end (DC-) of described pulse width modulation rectifier (21); After connecing altogether, the negative pole of the negative pole of described the 3rd diode (D3) and described the 4th diode (D4) is connected to the direct-flow positive pole output (DC+) of described pulse width modulation rectifier (21); The two ends of described the first electric capacity (C1) are connected to direct-flow positive pole output (DC+) and the direct current cathode output end (DC-) of described pulse width modulation rectifier (21).
7. according to the charging system for unmanned aerial vehicle described in claim 5 or 6, it is characterized in that: any one that described the first electronic switch (K1), the second electronic switch (K2), the 3rd electronic switch (K3) and quadrielectron switch (K4) are metal-oxide-semiconductor field effect transistor or PN junction type field-effect transistor or triode or insulated gate bipolar transistor or combination.
8. the charging system for unmanned aerial vehicle according to claim 1; it is characterized in that: on the shaft tower of described overhead transmission line (14), insulator is installed; the top of described insulator is provided with described electric energy transmission device (2); the top of described electric energy transmission device (2) is provided with can be for the shutdown platform of unmanned plane landing; wherein, described electric energy transmission device (2) includes the magnetic sheet (24 ') of multiple spaced and parallel spread configurations and is set around the inductive charging coil (23 ') in the magnetic groove of described magnetic sheet (24 ').
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119513.XU CN203871930U (en) | 2014-03-17 | 2014-03-17 | Charging system for unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119513.XU CN203871930U (en) | 2014-03-17 | 2014-03-17 | Charging system for unmanned aerial vehicle |
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| CN203871930U true CN203871930U (en) | 2014-10-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872795A (en) * | 2014-03-17 | 2014-06-18 | 王洋 | Charging system for unmanned aircraft |
| CN105098914A (en) * | 2015-08-24 | 2015-11-25 | 王秋临 | Charging system of quadcopter suitable for high voltage line patrolling |
| TWI573104B (en) * | 2015-03-25 | 2017-03-01 | 宇瞻科技股份有限公司 | Indoor monitoring system and method thereof |
| CN106998082A (en) * | 2016-01-22 | 2017-08-01 | 环旭电子股份有限公司 | Wireless charging hand-held device and its control method |
-
2014
- 2014-03-17 CN CN201420119513.XU patent/CN203871930U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872795A (en) * | 2014-03-17 | 2014-06-18 | 王洋 | Charging system for unmanned aircraft |
| CN103872795B (en) * | 2014-03-17 | 2016-06-01 | 王洋 | For the charge system of unmanned aerial vehicle |
| TWI573104B (en) * | 2015-03-25 | 2017-03-01 | 宇瞻科技股份有限公司 | Indoor monitoring system and method thereof |
| CN105098914A (en) * | 2015-08-24 | 2015-11-25 | 王秋临 | Charging system of quadcopter suitable for high voltage line patrolling |
| CN106998082A (en) * | 2016-01-22 | 2017-08-01 | 环旭电子股份有限公司 | Wireless charging hand-held device and its control method |
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