CN205622245U - High reliability transmission line responds to draw -out power supply - Google Patents
High reliability transmission line responds to draw -out power supply Download PDFInfo
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- CN205622245U CN205622245U CN201620418744.XU CN201620418744U CN205622245U CN 205622245 U CN205622245 U CN 205622245U CN 201620418744 U CN201620418744 U CN 201620418744U CN 205622245 U CN205622245 U CN 205622245U
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 238000004804 winding Methods 0.000 claims abstract description 48
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 27
- 230000033228 biological regulation Effects 0.000 claims description 24
- 230000006698 induction Effects 0.000 claims description 23
- 238000001914 filtration Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 9
- 230000037361 pathway Effects 0.000 claims description 9
- 238000005286 illumination Methods 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 5
- 238000012806 monitoring device Methods 0.000 description 5
- 230000005669 field effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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Abstract
The utility model relates to a high reliability transmission line responds to draw -out power supply, include: get ability unit, winding switching control circuit, surge protection circuit, rectification filter circuit, overvoltage crowbar and power management module, but get and to include switching formula troidal core and to take tapped secondary to get the ability coil by the unit, the secondary is got can have different gears by the coil, the winding switches the gear of control circuit according to overvoltage crowbar output voltage amplitude size and amplitude change volume decision access circuit, power management module includes voltage stabilizing circuit, voltage sampling circuit, control switch charges, charging circuit, lithium cell and electric source channel control switch, whether the control switch that charges to the lithium cell according to voltage sampling circuit output voltage amplitude size and amplitude change flow control charging circuit. The utility model discloses simple structure, the operational reliability is high, can not only improve the conversion of energy utilization ratio of power, has effectively reduced minimum pick -up current moreover, has higher engineering application and worth.
Description
Technical field
This utility model relates to high voltage induction energy fetching power supply correlative technology field, particularly relates to a kind of high reliability transmission line of electricity induction energy fetching power supply, is mainly used in the power supply supply of the on-Line Monitor Device such as transmission line of alternation current or high-tension switch cabinet.
Background technology
Development along with Relay Protection Technology in Power System; the monitoring device installed additional on transmission line of electricity or high pressure primary equipment day by day increases; such as on-line monitoring device for transmission line, device for monitoring icing, ring main unit condition monitoring device etc.; therefore, solve high-pressure side monitoring device powerup issue and become the new focus of research.Common power supply mode mainly have solar powered, battery is powered, laser powered sensor and ultrasound wave are powered, due to problems such as volume, cost, output, transformation efficiency, insulation, said method is not all effectively utilized.High voltage induction energy fetching is the good magnetic conductor by being set with openable on the line, electromagnetic induction principle is utilized to intercept and capture energy the alternating magnetic field produced about from line current, preferable development prospect can be possessed for installing the power supply that nigh monitoring device provides stable.Circuit disclosure satisfy that, high voltage induction energy fetching power supply normally works required minimum current for minimum starting current.Owing to transmission line of electricity current fluctuation scope is very big, draw-out power supply needs to solve two problems: one is when line current causes more greatly taking energy surplus, it is necessary to takes reasonably to let out energy mode, to ensure that power supply held stationary exports, otherwise will burn out power supply；Two is when line current is less than minimum starting current, possesses stand-by power supply, eliminates power work dead band.Generally require for can adapt to work under larger current relatively low take can efficiency, such as reduce take can core volume or minimizing take can the number of turn；For reducing minimum starting current, the most do not use reserve battery, generally require raising and take and efficiency, such as increase can take energy core volume.Therefore, make high voltage induction energy fetching power supply can either possess relatively low minimum starting current, improve and take energy efficiency, eliminate power work dead band；Remain able to when line current is excessive reliably work simultaneously and become the technological difficulties of this technical field.
Utility model content
The purpose of this utility model is, proposes a kind of high reliability transmission line of electricity induction energy fetching power supply, by the effective management to power supply, significantly improves and takes energy efficiency, eliminate power work dead band, provides stable power supply supply for on-line monitoring equipment.
The technical solution of the utility model is:
High reliability transmission line of electricity induction energy fetching power supply, it is characterised in that including: take energy unit, winding control switching circuit, impact protection circuit, current rectifying and wave filtering circuit, overvoltage crowbar and power management module；nullTake can unit include being sleeved on transmission pressure can open and close type annular core，The tapped secondary of band being wound on annular core takes can coil，Secondary takes and the electric energy that sensing obtains can be converted to coil alternating current output，Winding control switching circuit selects secondary to take energy coil according to overvoltage crowbar output voltage amplitude size and amplitude variable quantity and accesses the winding of circuit，Secondary is taken the alternating voltage of energy coil output and is converted into DC voltage by current rectifying and wave filtering circuit，Take and can be connected with the input of winding control switching circuit by the outfan of unit，The outfan of winding control switching circuit is connected with the input of impact protection circuit，The outfan of impact protection circuit is connected with the input of current rectifying and wave filtering circuit，The input of the outfan overvoltage crowbar of current rectifying and wave filtering circuit connects，The outfan of overvoltage crowbar is connected for the input of the input and power management module that detect voltage with winding control switching circuit respectively；nullPower management module includes mu balanced circuit、Voltage sample circuit、Charging control switch、Charging circuit、Lithium battery and power channel control switch，The input of mu balanced circuit is connected with the input of voltage sample circuit，The first input end that the outfan of mu balanced circuit controls to switch with input and the power channel of charging control switch respectively is connected，The input of charging control switch is connected with the outfan of voltage sample circuit，The outfan of charging control switch is connected with the input of charging circuit，The second input that the outfan of charging circuit controls to switch with positive terminal and the power channel of lithium battery respectively is connected，Power channel controls the outfan of switch and is connected with the input of load，Charging control switch controls the break-make of charge switch according to voltage sample circuit output voltage amplitude size and amplitude variable quantity，Power channel controls switch and automatically selects stabilized circuit outputting voltage and the high one end of lithium battery anode terminal voltage is load supplying.
Further optimization and/or improvements to technical solutions of the utility model are presented herein below:
Above-mentioned winding control switching circuit includes relay, protective resistance, the first pull-up resistor, optocoupler, the first pull down resistor, three end adjustable shunt reference sources, the first electric capacity of voltage regulation, the first current-limiting resistance, a NPN audion, the first divider resistance, adjustable second divider resistance of resistance value；nullOne end of protective resistance is connected with relay，The other end of protective resistance is connected with the positive terminal of optocoupler internal illumination diode，The outfan that one end of first pull-up resistor controls switch with power channel is connected，The colelctor electrode of the other end of the first pull-up resistor phototriode internal with optocoupler is connected，The emitter stage of the internal phototriode of optocoupler connects side of isolation ground，The negative pole end of optocoupler internal illumination diode respectively with one end of the first pull down resistor、One end of first current-limiting resistance and the base stage of three end adjustable shunt reference sources connect，The other end ground connection of the first pull down resistor，The other end of the first current-limiting resistance and the base stage of a NPN audion connect，The colelctor electrode of the oneth NPN audion respectively with the colelctor electrode of three end adjustable shunt reference sources、The positive terminal of the first electric capacity of voltage regulation、One end of first divider resistance and one end of the second divider resistance connect，The other end of the first divider resistance is connected with the outfan of overvoltage crowbar，The emitter stage of the oneth NPN audion and the resistance adjustment end of the second divider resistance connect，The emitter stage of three end adjustable shunt reference sources is connected with the negative pole end of the first electric capacity of voltage regulation and the other end of the second divider resistance and ground connection respectively.
Above-mentioned voltage sample circuit includes the 3rd divider resistance and the 4th divider resistance, the input that one end is voltage sample circuit of the 3rd divider resistance, one end of the other end of the 3rd divider resistance and the 4th divider resistance connects and as the outfan of voltage sample circuit, the other end ground connection of the 4th divider resistance.
nullAbove-mentioned charging control switch includes the second electric capacity of voltage regulation、5th divider resistance、Adjustable 6th divider resistance of resistance、2nd NPN audion、Voltage comparator、Second pull-up resistor、Second pull down resistor、First diode、Second current-limiting resistance、3rd pull-up resistor and PNP triode，The positive terminal of the second electric capacity of voltage regulation is connected with the inverting input of voltage comparator，The negative pole end ground connection of the second electric capacity of voltage regulation，One end of 5th divider resistance is connected with the colelctor electrode of the 2nd NPN audion and as the input of charging control switch，The other end of the 5th divider resistance is connected with the emitter stage of the 2nd NPN audion and one end of the 6th divider resistance respectively，The other end ground connection of the 6th divider resistance，The resistance adjustment end of the 6th divider resistance is connected with the in-phase input end of voltage comparator，One end of second pull-up resistor is connected with the colelctor electrode of the 2nd NPN audion and one end of the 3rd pull-up resistor respectively，The other end of the second pull-up resistor respectively with the base stage of the 2nd NPN audion、The negative pole end of the first diode and one end of the second pull down resistor connect，The other end of the second pull down resistor is connected with voltage comparator input power negative pole end and ground connection，The positive terminal of the first diode and one end of the second current-limiting resistance connect，The other end of the second current-limiting resistance respectively with the other end of the 3rd pull-up resistor、The base stage of PNP triode connects，The outfan of the current collection of PNP triode extremely charging control switch.
Above-mentioned power channel controls switch and includes the second diode and the 3rd diode, the positive terminal of the second diode is the first input end that power channel controls switch, the negative pole end of the negative pole end of the second diode and the 3rd diode connects and controls the outfan of switch as power channel, the positive terminal of the 3rd diode respectively with the outfan of charging circuit and the positive terminal of lithium battery is connected and controls the second input switched as power channel.
Above-mentioned power channel controls switch and includes dual pathways ideal diode LTC4413, one end of input and the 4th pull-up resistor that power channel controls switch connects, the other end of the 4th pull-up resistor indicates pin to be connected with the channel status of dual pathways ideal diode LTC4413, the channel status instruction pin of dual pathways ideal diode LTC4413 is connected with the I/O port of load microprocessor, and being used for indicating current supplying channels is mu balanced circuit or lithium battery.
Above-mentioned secondary takes winding when total winding of energy coil is to make current specifications iron core output maximum, centre tap is positioned at the middle part of total winding and forms sub-coil, before winding control switching circuit makes secondary take energy coil switching, total winding accesses circuit, after winding control switching circuit makes secondary take energy coil switching, sub-winding accesses circuit.
Accompanying drawing explanation
Fig. 1 is this utility model high voltage induction energy fetching power supply architecture block diagram.
Fig. 2 is this utility model power management module structured flowchart.
Fig. 3 is this utility model winding control switching circuit figure.
Fig. 4 is this utility model voltage sample circuit figure.
Fig. 5 is this utility model charging control switch circuit diagram.
Fig. 6 is this utility model embodiment one power management module circuit diagram.
Fig. 7 is this utility model high voltage induction energy fetching power circuit diagram.
Fig. 8 is this utility model embodiment two power management module circuit diagram.
Fig. 9 is this utility model winding control switching circuit experiment test figure.
Figure 10 is this utility model high voltage induction energy fetching power supply experiment test figure.
nullCoding in accompanying drawing is respectively as follows: 1 for taking energy unit，2 is winding control switching circuit，3 is impact protection circuit，4 is current rectifying and wave filtering circuit，5 is overvoltage crowbar，6 is power management module，601 is mu balanced circuit，602 is voltage sample circuit，603 is charging control switch，604 is charging circuit，605 control switch for power channel，BAT is lithium battery，7 is load，Vin is overvoltage crowbar output voltage，VCC is that power channel controls output switching terminal，U1 is relay，R1 is protective resistance，R2 is the first pull-up resistor，U2 is optocoupler，GND is side of isolation ground，JGND is ground，R3 is the first pull down resistor，Q1 is three end adjustable shunt reference sources，C1 is the first electric capacity of voltage regulation，R4 is the first current-limiting resistance，Q2 is a NPN audion，R5 is the first divider resistance，R6 is the second divider resistance，R7 is the 3rd divider resistance，R8 is the 4th divider resistance，C2 is the second electric capacity of voltage regulation，R9 is the 5th divider resistance，Q3 is the 2nd NPN audion，R10 is the 6th divider resistance，R11 is the second pull-up resistor，R12 is the second pull down resistor，U3 is voltage comparator，D1 is the first diode，R13 is the second current-limiting resistance，D2 is the second diode，D3 is the 3rd diode，Q4 is PNP triode，V1 is voltage sample circuit outfan，V2 is circuit output end of pressure-stabilizing，V3 is charging control switch outfan，C3 is filter capacitor，R15 is the 3rd pull-up resistor.
Detailed description of the invention
The utility model is described in more detail with embodiment below in conjunction with the accompanying drawings.
Embodiment one
It is illustrated in figure 1 high voltage induction energy fetching power supply architecture block diagram.High voltage induction energy fetching power supply includes taking energy unit 1, winding control switching circuit 2, impact protection circuit 3, current rectifying and wave filtering circuit 4, overvoltage crowbar 5 and power management module 6.Take and can be connected with the input of winding control switching circuit 2 by the outfan of unit 1; the outfan of winding control switching circuit 2 is connected with the input of impact protection circuit 3; the outfan of impact protection circuit 3 is connected with the input of current rectifying and wave filtering circuit 4; the input of the outfan overvoltage crowbar 5 of current rectifying and wave filtering circuit 4 connects, and the outfan of overvoltage crowbar 5 input with the winding control switching circuit 2 input and power management module 6 for detecting voltage respectively is connected；Take can being sleeved on transmission pressure by open and close type annular core of energy unit 1; carry tapped secondary to take can be wound on annular core by coil; winding A-C is total winding; winding B-C is sub-winding; the voltage detecting input of winding control switching circuit 2 monitors overvoltage crowbar output end voltage in real time, makes the secondary taking energy unit 1 take and can be switched to sub-winding B-C by total winding A-C by coil when output voltage assignment variable quantity reaches setting value；When winding control switching circuit 2 output is excessive; the high impedance at the two poles of the earth is become Low ESR by impact protection circuit 3, absorbs surge power, makes the voltage clamp of two interpolars in a predetermined value; prevent from being destroyed by excessive instantaneous voltage or disturbing puncturing, protect subsequent conditioning circuit；The alternating voltage that impact protection circuit 3 exports is converted to DC voltage by current rectifying and wave filtering circuit 4; overvoltage crowbar includes hysteresis comparator and MOSFET field effect transistor; when current rectifying and wave filtering circuit 4 exports DC voltage less than overvoltage crowbar 5 threshold voltage; hysteresis comparator output open circuit; MOSFET field effect transistor turns on; when current rectifying and wave filtering circuit 4 exports DC voltage more than overvoltage crowbar 5 threshold voltage; hysteresis comparator overturns; MOSFET field effect transistor disconnects; disconnect the connection with power management module 6 further, protect subsequent conditioning circuit；The DC voltage that overvoltage crowbar 5 exports is converted into the DC voltage needed for load 7 by power management module 6, and the lithium battery as energy storage device is carried out charge and discharge control.
It is power management module structured flowchart as shown in Figure 2.Power management module 6 includes that mu balanced circuit 601, voltage sample circuit 602, charging control switch 603, charging circuit 604, power channel control switch 605, lithium battery BAT.The input of mu balanced circuit 601 is connected with the input of voltage sample circuit 602, the outfan of mu balanced circuit 602 is connected with the input of charging control switch 603 and the first input end of power channel control switch 605 respectively, the input of charging control switch 603 is connected with the outfan Vin of voltage sample circuit, the outfan of charging control switch 603 is connected with the input of charging circuit 604, the outfan of charging circuit 604 is connected with the positive terminal of lithium battery BAT and the second input of power channel control switch 605 respectively, power channel controls the outfan of switch 605 and is connected with the input of load.Overvoltage crowbar output voltage Vin is converted to load 7 required voltages by mu balanced circuit 601；Charging control switch 603 controls the break-make of charge switch according to voltage sample circuit output voltage Vin amplitude size and amplitude variable quantity, when voltage sample circuit output voltage Vin amplitude is more than charging control switch 603 voltage setting value, charge switch turns on, charging circuit 604 is charged for lithium battery BAT, when voltage sample circuit output voltage Vin amplitude is less than charging control switch 603 voltage setting value and meets amplitude variable quantity, charge switch disconnects, and charging circuit 604 stops being charged for lithium battery BAT；Power channel control switch 605, according to mu balanced circuit 601 output voltage and lithium battery BAT positive terminal voltage levels situation, automatically selects the high one end of voltage for load 7 power supply.
It is winding control switching circuit figure as shown in Figure 3.Winding control switching circuit 2 includes relay U1, protective resistance R1, the first pull-up resistor R2, optocoupler U2, the first pull down resistor R3, three end adjustable shunt reference source Q1, the first electric capacity of voltage regulation C1, the first current-limiting resistance R4, a NPN audion Q2, the first divider resistance R5, the adjustable second divider resistance R6 of resistance value；nullOne end of protective resistance R1 is connected with relay U1，The other end of protective resistance R1 is connected with the positive terminal of optocoupler U2 internal illumination diode，The outfan VCC that one end of first pull-up resistor R2 controls switch with power channel is connected，The colelctor electrode of the other end of the first pull-up resistor R2 phototriode internal with optocoupler U2 is connected，The emitter stage of the internal phototriode of optocoupler U2 meets side of isolation ground GND，The negative pole end of optocoupler U2 internal illumination diode respectively with one end of the first pull down resistor R3、One end of first current-limiting resistance R4 and the base stage of three end adjustable shunt reference source Q1 connect，The other end ground connection JGND of the first pull down resistor R3，The other end of the first current-limiting resistance R4 and the base stage of a NPN audion Q2 connect，The colelctor electrode of the oneth NPN audion Q2 respectively with the colelctor electrode of three end adjustable shunt reference source Q1、The positive terminal of the first electric capacity of voltage regulation C1、One end of first divider resistance R5 and one end of the second divider resistance R6 connect，The other end of the first divider resistance R5 is connected with the outfan Vin of overvoltage crowbar，The emitter stage of the oneth NPN audion Q2 and the resistance adjustment end of the second divider resistance R6 connect，The emitter stage of three end adjustable shunt reference source Q1 is connected with the negative pole end of the first electric capacity of voltage regulation C1 and the other end of the second divider resistance R6 and ground connection JGND respectively.The operation principle of this circuit is: when three end adjustable shunt reference source Q1 colelctor electrode input voltages are less than breakdown voltage, internal audion is in cut-off state, output high level, oneth NPN triode ON, optocoupler U2 ends, relay U1 is failure to actuate, and secondary takes and can access circuit by coil total winding A-C；When three end adjustable shunt reference source Q1 colelctor electrode input voltages are more than breakdown voltage, internal audion is in the conduction state, output low level, first pull down resistor R3 makes three end adjustable shunt reference source Q1 base voltages be pulled low to earth potential, oneth NPN audion turns off, the electric resistance partial pressure of the first divider resistance R5 and the second divider resistance R6 is than increasing, further ensure that three end adjustable shunt reference source Q1 are in breakdown conditions, optocoupler U2 turns on, drive relay U1 action, secondary takes and can access circuit by coil total winding B-C, protective resistance R1 is used for preventing inflow relay U1 electric current from crossing ambassador, and it burns.The electric resistance partial pressure ratio of the first divider resistance R5 and the second divider resistance R6 is adjusted further by the break-make controlling a NPN audion, make three end adjustable shunt reference source Q1 colelctor electrode input voltages more than actuating of relay during breakdown voltage, and it must is fulfilled for relay recovery original state when its value is less than breakdown voltage and there is certain variable quantity, substantially increase the anti-interference of winding control switching circuit 2.
It is voltage sample circuit figure as shown in Figure 4.Voltage sample circuit 602 includes the 3rd divider resistance R7 and the 4th divider resistance R8; the input that one end is voltage sample circuit 602 of the 3rd divider resistance R7; it is connected with the outfan Vin of overvoltage crowbar; for detecting amplitude size and the amplitude variable quantity of its output voltage; one end of the other end of the 3rd divider resistance R7 and the 4th divider resistance R8 connects and as the outfan V1 of voltage sample circuit, the other end ground connection of the 4th divider resistance R8.
It is charging control switch circuit diagram as shown in Figure 5.nullCharging control switch 603 includes the second electric capacity of voltage regulation C2、5th divider resistance R9、The adjustable 6th divider resistance R10 of resistance、2nd NPN audion Q3、Voltage comparator U3、Second pull-up resistor R11、Second pull down resistor R12、First diode D1、Second current-limiting resistance R13、3rd pull-up resistor R14 and PNP triode Q4，The positive terminal of the second electric capacity of voltage regulation C2 is connected with the inverting input of voltage comparator U3，The negative pole end ground connection of the second electric capacity of voltage regulation C2，One end of 5th divider resistance R9 colelctor electrode with the outfan V2 and the 2nd NPN audion Q3 of regulated power supply respectively is connected and as the input of charging control switch，The other end of the 5th divider resistance R9 is connected with the emitter stage of the 2nd NPN audion Q3 and one end of the 6th divider resistance R10 respectively，The other end ground connection of the 6th divider resistance R10，The resistance adjustment end of the 6th divider resistance R10 is connected with the in-phase input end of voltage comparator U3，One end of second pull-up resistor R11 is connected with the colelctor electrode of the 2nd NPN audion Q3 and one end of the 3rd pull-up resistor R14 respectively，The other end of the second pull-up resistor R11 respectively with the base stage of the 2nd NPN audion Q3、The negative pole end of the first diode D1 and one end of the second pull down resistor R12 connect，The other end of the second pull down resistor R12 is connected with voltage comparator U3 input power negative pole end and ground connection，The positive terminal of the first diode D1 and one end of the second current-limiting resistance R13 connect，The other end of the second current-limiting resistance R13 respectively with the other end of the 3rd pull-up resistor R14、The base stage of PNP triode Q4 connects，The outfan V3 of the current collection of PNP triode Q4 extremely charging control switch.The operation principle of this circuit is: the second electric capacity of voltage regulation C2 is used for filtering V1 frequency glitches makes voltage keep stable, when V1 is less than voltage comparator U3 in-phase input end voltage, voltage comparator U3 output open circuit, second pull-up resistor R11 makes the 2nd NPN audion Q3 base voltage be pulled to high level, magnitude of voltage is determined by the electric resistance partial pressure ratio of the second pull-up resistor R11 and the second pull down resistor R12, 2nd NPN audion Q3 conducting, 5th divider resistance R9 is shorted, voltage comparator U3 in-phase input end voltage is determined by the adjustable 6th divider resistance R10 of resistance, PNP triode Q4 turns off, charging circuit 604 stops charging lithium battery BAT；When V1 is more than voltage comparator U3 in-phase input end voltage, voltage comparator U3 overturns, second pull down resistor R11 makes the 2nd NPN audion Q3 base voltage be pulled to earth potential, 2nd NPN audion Q3 turns off, 5th divider resistance R9 accesses circuit, voltage comparator U3 in-phase input end voltage reduces, voltage comparator U3 is made to be held turned over state more stable, PNP triode Q4 saturation conduction, charging circuit 604 starts to charge lithium battery BAT, PNP triode Q4 is protected by the unilateral conduction utilizing the first diode D1, second current-limiting resistance R13 prevents PNP triode Q4 base current excessive and burns, PNP triode Q4 base stage is pulled to high level by the 3rd pull-up resistor R14, improve circuit anti-interference.
It is power management module circuit diagram as shown in Figure 6.nullIn the present embodiment，Power channel controls switch 605 and includes the second diode D2 and the 3rd diode D3，The positive terminal of the second diode D2 is connected with the outfan of mu balanced circuit and controls the first input end of switch 605 as power channel，The negative pole end of the second diode D2 and the negative pole end of the 3rd diode D3 connect and control the outfan VCC of switch as power channel，The positive terminal of the 3rd diode D3 respectively with the outfan of charging circuit 604 and the positive terminal of lithium battery BAT is connected and as power channel control switch the second input，It is load 7 power supply that this circuit utilizes the unilateral conduction of diode to automatically select the higher one end of the positive terminal voltage of circuit output end of pressure-stabilizing and lithium battery，When circuit design, stabilized circuit outputting voltage is 5V，Lithium battery voltage is 4.2V，Second diode D2 and the 3rd diode D3 selects the germanium diode that electric conduction pressure drop is relatively low，During conducting, voltage drop is about 0.3V.
The present embodiment high voltage induction energy fetching power circuit diagram is as shown in Figure 7.
Embodiment two
It is power management module circuit diagram as shown in Figure 8.With the difference of embodiment one, the present embodiment is that power channel controls switch 605 and includes dual pathways ideal diode LTC4413 and the 4th pull-up resistor R15, one end of input and the 4th pull-up resistor R15 that power channel controls switch 605 connects, the other end of the 4th pull-up resistor R15 indicates pin to be connected with the channel status of dual pathways ideal diode LTC4413, the channel status instruction pin of dual pathways ideal diode LTC4413 is connected with the I/O port of microprocessor in load 7, and being used for indicating current supplying channels is that mu balanced circuit is powered or lithium battery power supply.
Embodiment three
Specifically, according to following example, this utility model is described further its advantage and engineer applied is worth.Technical scheme disclosed in embodiment two is applied in powerline ice-covering on-line monitoring, on-line monitoring apparatus of load power consumption is 1.8W, installation, dismounting and coiling for ease of transmission pressure are convenient, annular core cutting uses the mode of half-round symmetrical line cutting, it is 60 circles that secondary takes total umber of turn of energy coil, the sub-winding number of turn is 20 circles, and secondary takes energy coil and all uses the copper enamel-covered wire of a diameter of 0.3mm.Winding control switching circuit experimental results is as shown in table 1 and Fig. 9.
Table 1. overvoltage crowbar output voltage and secondary take and can take energy winding and test current relation table by coil
| Test current | 98A | 108A | 110A | 122A | 110A | 108A | 82A |
| Overvoltage crowbar output voltage | 41.4V | 42.8V | 43.5V | 45.2V | 44.1V | 43.1V | 36.4V |
| Secondary takes can coil | A-C | A-C | B-C | B-C | B-C | B-C | A-C |
When test current rises to 98A, iron core magnetization curve comes into zone of saturation, and now secondary takes and can access circuit, the winding control switching circuit actuating of relay when test current rises to 110A by coil A-C, and secondary takes and can switch to B-C access circuit by coil；Start to reduce test current when test current rises to 122A, when test current drops to 110A and 108A, winding control switching circuit relay is not operating, when test current drops to 82A, the winding control switching circuit actuating of relay, secondary takes and can switch to A-C access circuit by coil B-C.This circuit efficiently solves transmission pressure current fluctuation and causes the problem of relay switching by mistake, improves the anti-interference of circuit.
It is high voltage induction energy fetching power supply experiment test figure as shown in Figure 10.In this test, overvoltage crowbar output voltage and charging control switch are as shown in table 2 with test current relation.
Table 2. overvoltage crowbar output voltage and charging control switch and test current relation table
| Test current | 12A | 20A | 32A | 100A | 500A | 1200A | 1500A |
| Overvoltage crowbar output voltage | 6.8V | 10.4V | 15.8V | 43.1V | 46.2V | 47.1V | 0V |
| Charging control switch | Disconnect | Disconnect | Conducting | Conducting | Conducting | Conducting | Disconnect |
When test current is 12A, charging control switch disconnects, now power management module output voltage is 5V, if and in process of the test by charging control switch short circuit, then due to for lithium cell charging, increased weight load, now power management module output voltage about 2.8V, it is impossible to for load supplying, effectively illustrate that this power management module can effectively reduce minimum starting current, improve power supply power supply reliability；When test current rises to 32A, charging control switch turns on, and charging circuit starts as lithium cell charging；When test current rises to 1500A, although secondary takes and can access circuit by coil sub-winding B-C, but the electric energy of sensing output is still too much, and the most now in overvoltage crowbar, MOSFET field effect transistor is closed, lithium battery be load supplying；And transmission pressure electric current typically not achieves 1500A in practical engineering application, therefore this high voltage induction energy fetching power supply disclosure satisfy that engineering demand.
Embodiment described above only have expressed detailed description of the invention of the present utility model, but therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (7)
1. a high reliability transmission line of electricity induction energy fetching power supply, it is characterised in that including: take energy unit, winding control switching circuit, impact protection circuit, current rectifying and wave filtering circuit, overvoltage crowbar and power management module；Take can unit include being sleeved on transmission pressure can open and close type annular core, the tapped secondary of band being wound on annular core takes energy coil, take and can be connected with the input of winding control switching circuit by the outfan of unit, the outfan of winding control switching circuit is connected with the input of impact protection circuit, the outfan of impact protection circuit is connected with the input of current rectifying and wave filtering circuit, the input of the outfan overvoltage crowbar of current rectifying and wave filtering circuit connects, the outfan of overvoltage crowbar is connected for the input of the input and power management module that detect voltage with winding control switching circuit respectively；Power management module includes mu balanced circuit, voltage sample circuit, charging control switch, charging circuit, lithium battery and power channel control switch, the input of mu balanced circuit is connected with the input of voltage sample circuit, the first input end that the outfan of mu balanced circuit controls to switch with input and the power channel of charging control switch respectively is connected, the input of charging control switch is connected with the outfan of voltage sample circuit, the outfan of charging control switch is connected with the input of charging circuit, the second input that the outfan of charging circuit controls to switch with positive terminal and the power channel of lithium battery respectively is connected, power channel controls the outfan of switch and is connected with the input of load.
High reliability transmission line of electricity induction energy fetching power supply the most according to claim 1; it is characterized in that, winding control switching circuit includes protecting relay, protective resistance, the first pull-up resistor, optocoupler, the first pull down resistor, three end adjustable shunt reference sources, the first electric capacity of voltage regulation, the first current-limiting resistance, a NPN audion, the first divider resistance, adjustable second divider resistance of resistance value；nullOne end of protective resistance is connected with relay，The other end of protective resistance is connected with the positive terminal of optocoupler internal illumination diode，The outfan that one end of first pull-up resistor controls switch with power channel is connected，The colelctor electrode of the other end of the first pull-up resistor phototriode internal with optocoupler is connected，The emitter stage of the internal phototriode of optocoupler connects side of isolation ground，The negative pole end of optocoupler internal illumination diode respectively with one end of the first pull down resistor、One end of first current-limiting resistance and the base stage of three end adjustable shunt reference sources connect，The other end ground connection of the first pull down resistor，The other end of the first current-limiting resistance and the base stage of a NPN audion connect，The colelctor electrode of the oneth NPN audion respectively with the colelctor electrode of three end adjustable shunt reference sources、The positive terminal of the first electric capacity of voltage regulation、One end of first divider resistance and one end of the second divider resistance connect，The other end of the first divider resistance is connected with the outfan of overvoltage crowbar，
The emitter stage of the oneth NPN audion and the resistance adjustment end of the second divider resistance connect, and the emitter stage of three end adjustable shunt reference sources is connected with the negative pole end of the first electric capacity of voltage regulation and the other end of the second divider resistance and ground connection respectively.
High reliability transmission line of electricity induction energy fetching power supply the most according to claim 1 and 2, it is characterized in that, voltage sample circuit includes the 3rd divider resistance and the 4th divider resistance, the input that one end is voltage sample circuit of the 3rd divider resistance, one end of the other end of the 3rd divider resistance and the 4th divider resistance connects and as the outfan of voltage sample circuit, the other end ground connection of the 4th divider resistance.
nullHigh reliability transmission line of electricity induction energy fetching power supply the most according to claim 1 and 2，It is characterized in that，Charging control switch includes the second electric capacity of voltage regulation、5th divider resistance、Adjustable 6th divider resistance of resistance、2nd NPN audion、Voltage comparator、Second pull-up resistor、Second pull down resistor、First diode、Second current-limiting resistance、3rd pull-up resistor and PNP triode，The positive terminal of the second electric capacity of voltage regulation is connected with the inverting input of voltage comparator，The negative pole end ground connection of the second electric capacity of voltage regulation，One end of 5th divider resistance is connected with the colelctor electrode of the 2nd NPN audion and as the input of charging control switch，The other end of the 5th divider resistance is connected with the emitter stage of the 2nd NPN audion and one end of the 6th divider resistance respectively，The other end ground connection of the 6th divider resistance，The resistance adjustment end of the 6th divider resistance is connected with the in-phase input end of voltage comparator，One end of second pull-up resistor is connected with the colelctor electrode of the 2nd NPN audion and one end of the 3rd pull-up resistor respectively，The other end of the second pull-up resistor respectively with the base stage of the 2nd NPN audion、The negative pole end of the first diode and one end of the second pull down resistor connect，The other end of the second pull down resistor is connected with voltage comparator input power negative pole end and ground connection，The positive terminal of the first diode and one end of the second current-limiting resistance connect，The other end of the second current-limiting resistance respectively with the other end of the 3rd pull-up resistor、The base stage of PNP triode connects，The outfan of the current collection of PNP triode extremely charging control switch.
nullHigh reliability transmission line of electricity induction energy fetching power supply the most according to claim 3，It is characterized in that，Charging control switch includes the second electric capacity of voltage regulation、5th divider resistance、Adjustable 6th divider resistance of resistance、2nd NPN audion、Voltage comparator、Second pull-up resistor、Second pull down resistor、First diode、Second current-limiting resistance、3rd pull-up resistor and PNP triode，The positive terminal of the second electric capacity of voltage regulation is connected with the inverting input of voltage comparator，The negative pole end ground connection of the second electric capacity of voltage regulation，One end of 5th divider resistance is connected with the colelctor electrode of the 2nd NPN audion and as the input of charging control switch，The other end of the 5th divider resistance is connected with the emitter stage of the 2nd NPN audion and one end of the 6th divider resistance respectively，The other end ground connection of the 6th divider resistance，The resistance adjustment end of the 6th divider resistance is connected with the in-phase input end of voltage comparator，One end of second pull-up resistor is connected with the colelctor electrode of the 2nd NPN audion and one end of the 3rd pull-up resistor respectively，The other end of the second pull-up resistor respectively with the base stage of the 2nd NPN audion、The negative pole end of the first diode and one end of the second pull down resistor connect，The other end of the second pull down resistor is connected with voltage comparator input power negative pole end and ground connection，The positive terminal of the first diode and one end of the second current-limiting resistance connect，The other end of the second current-limiting resistance respectively with the other end of the 3rd pull-up resistor、The base stage of PNP triode connects，The outfan of the current collection of PNP triode extremely charging control switch.
High reliability transmission line of electricity induction energy fetching power supply the most according to claim 1 and 2, it is characterized in that, power channel controls switch and includes the second diode and the 3rd diode, the positive terminal of the second diode is the first input end that power channel controls switch, the negative pole end of the negative pole end of the second diode and the 3rd diode connects and controls the outfan of switch as power channel, the positive terminal of the 3rd diode respectively with the outfan of charging circuit and the positive terminal of lithium battery is connected and controls the second input switched as power channel.
High reliability transmission line of electricity induction energy fetching power supply the most according to claim 1 and 2, it is characterized in that, power channel controls switch and includes dual pathways ideal diode LTC4413, one end of input and the 4th pull-up resistor that power channel controls switch connects, the other end of the 4th pull-up resistor indicates pin to be connected with the channel status of dual pathways ideal diode LTC4413, the channel status instruction pin of dual pathways ideal diode LTC4413 is connected with the I/O port of load microprocessor, and being used for indicating current supplying channels is mu balanced circuit or lithium battery.
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| CN201620418744.XU CN205622245U (en) | 2016-05-10 | 2016-05-10 | High reliability transmission line responds to draw -out power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834872A (en) * | 2017-11-01 | 2018-03-23 | 国网宁夏电力公司检修公司 | Suitable for the energy taking device of wide curent change scope |
| CN109787337A (en) * | 2019-01-28 | 2019-05-21 | 江苏森源电气股份有限公司 | Composite power supply formula wireless temperature-measuring sensor and its control method |
| CN111566894A (en) * | 2018-05-25 | 2020-08-21 | Oppo广东移动通信有限公司 | Wireless charging receiving device and mobile terminal |
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2016
- 2016-05-10 CN CN201620418744.XU patent/CN205622245U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107834872A (en) * | 2017-11-01 | 2018-03-23 | 国网宁夏电力公司检修公司 | Suitable for the energy taking device of wide curent change scope |
| CN107834872B (en) * | 2017-11-01 | 2020-02-07 | 国网宁夏电力公司检修公司 | Energy taking device suitable for wide current variation range |
| CN111566894A (en) * | 2018-05-25 | 2020-08-21 | Oppo广东移动通信有限公司 | Wireless charging receiving device and mobile terminal |
| CN111566894B (en) * | 2018-05-25 | 2023-06-02 | Oppo广东移动通信有限公司 | Wireless charging receiving device and mobile terminal |
| CN109787337A (en) * | 2019-01-28 | 2019-05-21 | 江苏森源电气股份有限公司 | Composite power supply formula wireless temperature-measuring sensor and its control method |
| CN109787337B (en) * | 2019-01-28 | 2022-04-29 | 江苏森源电气股份有限公司 | Composite power supply type wireless temperature measuring sensor and control method thereof |
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