CN110289640A - Intelligent photovoltaic switching off device - Google Patents
Intelligent photovoltaic switching off device Download PDFInfo
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- CN110289640A CN110289640A CN201910743022.XA CN201910743022A CN110289640A CN 110289640 A CN110289640 A CN 110289640A CN 201910743022 A CN201910743022 A CN 201910743022A CN 110289640 A CN110289640 A CN 110289640A
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- 230000000630 rising effect Effects 0.000 claims description 3
- 206010014357 Electric shock Diseases 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The present invention provides a kind of intelligent photovoltaic switching off device, comprising: charge pump circuit, signal receiving circuit, logic control circuit, RSD breaking circuit；The input of charge pump circuit terminates the positive PV+ of corresponding photovoltaic panel, one fixed operating voltage of output end output one, it is supplied to signal receiving circuit and logic control circuit, the another output of charge pump circuit connects RSD breaking circuit, and the output voltage of photovoltaic panel is promoted a voltage value and is supplied to RSD breaking circuit；The positive output node VSTRING+ of input termination the same level of signal receiving circuit, the control output end of signal receiving circuit connects logic control circuit；The control signal of logic control circuit derives from the signal receiving circuit, and logic control circuit connects the control terminal of RSD breaking circuit；The input of RSD breaking circuit terminates the positive PV+ of corresponding photovoltaic panel, the positive output node VSTRING+ of output termination the same level；The present invention can guarantee personal safety.
Description
Technical field
The present invention relates to a kind of photovoltaic switching off device, especially a kind of intelligent photovoltaic switching off device based on PLC power line carrier.
Background technique
Solar energy power generating has become global research hotspot as a kind of green energy resource electricity generation system and has obtained fast
Speed development is transmitted as alternating current in view of conventional electric power, and photovoltaic panel needs muti-piece series connection to carry out inversion grid connection power generation.This series connection is high
Pressure can cause electric shock risk, and especially when fire occurs, fireman's participation fire extinguishing procedure can be easier to get an electric shock dead.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of intelligent photovoltaic switching off device, can be in the short period
It is interior that the output voltage of photovoltaic panel is reduced to low-voltage such as 1v, in the series connection of muti-piece photovoltaic panel, whole string photovoltaic module
Output voltage can control within safe voltage, ensure that the personal safety of fireman.The technical solution adopted by the present invention is that:
A kind of intelligent photovoltaic switching off device, comprising: charge pump circuit, signal receiving circuit, logic control circuit, RSD breaking circuit；
For the whole string photovoltaic module formed of being connected by photovoltaic panels at different levels, in circuits at different levels, intelligent photovoltaic switching off device corresponds to the same level
Photovoltaic panel；
The input of charge pump circuit terminates the positive PV+ of corresponding photovoltaic panel, and operating voltage is fixed in an output end output one,
It is supplied to signal receiving circuit and logic control circuit, the another output of charge pump circuit connects RSD breaking circuit, by photovoltaic
The output voltage of plate promotes a voltage value and supplies to RSD breaking circuit；
The positive output node VSTRING+ of input termination the same level of signal receiving circuit, the control output end of signal receiving circuit connects
Logic control circuit；
The control signal of logic control circuit derives from the signal receiving circuit, and logic control circuit connects RSD breaking circuit
Control terminal；Signal receiving circuit receives the power carrier signal by power line transmission；
The input of RSD breaking circuit terminates the positive PV+ of corresponding photovoltaic panel, the positive output node of output termination the same level
VSTRING+；The control of RSD breaking circuit terminates logic control circuit.
It further, further include bypass freewheeling circuit, the current input terminal for bypassing freewheeling circuit connects the negative output section of the same level
Point OUT-, current output terminal meet the positive output node VSTRING+ of the same level；
The cathode PV- of photovoltaic panel meets the negative output node OUT- of the same level.
Further, RSD breaking circuit is also connected with a low-voltage VOUT, when so that RSD breaking circuit turning off, can export
Low-voltage VOUT；The sum of low-voltage VOUT of circuits at different levels needs to be less than safe voltage.
Specifically, charge pump circuit include charge pump and power supply chip U1, square-wave generator, diode D1, D3, D4, D5,
D6, capacitor C6, C8；
The anode of diode D1 meets the positive PV+ of photovoltaic panel, and cathode connects the voltage of charge pump Yu power supply chip U1 by resistance R1
Input terminal；The output of the square wave input of charge pump and power supply chip U1 termination square-wave generator；Charge pump is with power supply chip U1's
One voltage output end exports fixed operating voltage, and charge pump exports one end of termination capacitor C6 with the square wave of power supply chip U1,
The cathode of another terminating diode D3 of capacitor C6 and the anode of D4；
The positive PV+ of one termination photovoltaic panel of the anode and resistance R6 of diode D6, the anode of diode D5 connect the just defeated of the same level
Egress VSTRING+；The cathode of diode D6 connects the anode of the cathode of D5, the other end of resistance R20 and diode D3, capacitor
The both ends of C8 connect the anode of diode D3 and the cathode of D4 respectively；The cathode output of diode D4 mentions the output voltage of photovoltaic panel
Voltage after rising, connects RSD breaking circuit by resistance R8.
Specifically, signal receiving circuit includes signal receiving chip U3, crystal oscillator source X1, carrier wave reception circuit；
The clock of signal receiving chip U3 terminates crystal oscillator source X1, and the power carrier signal input terminal of signal receiving chip U3 carries wave
Receive circuit；The input that carrier wave receives circuit meets the positive output node VSTRING+ of the same level；
The feeder ear of signal receiving chip U3 connects the fixation operating voltage of charge pump circuit generation by resistance R18；Signal receives
The control output end of chip U3 connects logic control circuit.
Further, carrier wave receive circuit include capacitor C17, resistance R21, receiving transformer T1, resistance R13, R14,
R15, capacitor C10, C11, C12, zener diode ZD1, ZD2；The positive output section of termination the same level of capacitor C17 and resistance R21
The primary Same Name of Ends of another termination receiving transformer T1 of point VSTRING+, capacitor C17, the primary different name end of receiving transformer T1
With the cathode PV- of another termination the same level photovoltaic panel of resistance R21；Secondary one end terminating resistor R15 of the same name of receiving transformer T1,
The one end capacitor C12, the one end capacitor C10 and zener diode ZD1 cathode；The secondary different name terminating resistor R15 of receiving transformer T1
The other end, the capacitor C12 other end, the one end capacitor C11 and zener diode ZD2 cathode；The anode of zener diode ZD1 and ZD2
Ground connection；The capacitor C10 other end connects a carrier signal input pin of signal receiving chip U3 by resistance R13, and capacitor C11 is another
One end connects another carrier signal input pin of signal receiving chip U3 by resistance R14.
Further, signal receiving chip U3 also passes through one low-voltage VOUT of one voltage output end generation；It is at different levels
The sum of low-voltage VOUT of circuit needs to be less than safe voltage.
Specifically, logic control circuit includes resistance R9, R10, R11, NMOS tube N1, N3；
RSD breaking circuit include NMOS tube Q1, Q2, N4, N5, zener diode ZD4, ZD5, ZD6, ZD7, resistance R12, R22,
R23；
One end of resistance R11 and the grid of NMOS tube N3 connect the control output end of signal receiving circuit 200 by resistance R19, electricity
Hinder the other end of R11 and the source electrode ground connection of N3；One end drain electrode connecting resistance R10 of NMOS tube N3, the one end resistance R9, NMOS tube N4 and
The grid of N5；The fixation operating voltage of another termination charge pump circuit output of resistance R10；Another termination NMOS tube of resistance R9
The grid of N1；The drain electrode of NMOS tube N4 meets low-voltage VOUT；The sum of low-voltage VOUT of circuits at different levels needs to be less than safe electricity
Pressure；The source electrode of NMOS tube N4 connects the source electrode of N5, and the drain electrode of N5 meets the positive output node VSTRING+ of the same level by resistance R12；
The drain electrode of NMOS tube Q1 connects the one end grid connecting resistance R8, one end resistance R22, pressure stabilizing of photovoltaic panel the anode PV+, Q1 of the same level
The drain electrode of the cathode of diode ZD4 and ZD7, the grid of NMOS tube Q2, resistance R23 one end, NMOS tube N1；The source electrode of N1 is grounded；
RSD breaking circuit connects the voltage of the another output output of charge pump circuit by resistance R8, i.e., to the output electricity of photovoltaic panel
Voltage after pressure promotion；
The drain electrode of source electrode connecting resistance the R22 other end, zener diode ZD5 cathode and NMOS tube Q2 of NMOS tube Q1, two pole of pressure stabilizing
The anode of pipe ZD4 and ZD5 docks, the cathode and the same level of the source electrode connecting resistance R23 other end of NMOS tube Q2, zener diode ZD6
Positive output node VSTRING+；The anode of zener diode ZD6 and ZD7 dock.
Specifically, bypass freewheeling circuit includes diode D2, and the anode of diode D2 flows into termination the same level as electric current
The cathode of negative output node OUT-, D2 meet the positive output node VSTRING+ of the same level as current output terminal.
Advantages of the present invention: firstly, carrying out reception shutdown using power carrier signal, not interfering vulnerable to outer signals,
It is not easy to interfere external device；In addition, the output voltage path of photovoltaic module can be turned off, the person of fireman when ensureing fire extinguishing
Safety.
Detailed description of the invention
Fig. 1 is electrical diagram of the invention.
Fig. 2 is specific electrical schematic diagram of the invention.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
As shown in Figure 1, a kind of intelligent photovoltaic switching off device proposed by the present invention, comprising: charge pump circuit 100, signal receive
Circuit 200, logic control circuit 300, RSD breaking circuit 400, bypass freewheeling circuit 500；
For the whole string photovoltaic module formed of being connected by photovoltaic panels at different levels, every primary circuit includes that a photovoltaic panel and one are corresponding
Intelligent photovoltaic switching off device；
In circuits at different levels,
The input of charge pump circuit 100 terminates the positive PV+ of corresponding photovoltaic panel, a fixed work electricity of output end output one
Pressure, such as 10v, are supplied to signal receiving circuit and logic control circuit, the another output of charge pump circuit 100 meets RSD
The output voltage of photovoltaic panel is promoted (such as promoting 10v) supply of a voltage value to RSD breaking circuit by breaking circuit 400
400；
The positive output node VSTRING+ of input termination the same level of signal receiving circuit 200, the control of signal receiving circuit 200 are defeated
Logic control circuit 300 is terminated out；
Signal receiving circuit 200 also generates a low-voltage VOUT and is supplied to RSD breaking circuit 400, so that RSD breaking circuit 400
When shutdown, low-voltage VOUT can be exported；Work, the low-voltage VOUT of circuits at different levels are kept convenient for the CPU in inverter
The sum of need to be less than safe voltage；It is 1v in VOUT this example；
The control signal of logic control circuit 300 derives from the signal receiving circuit 200, and logic control circuit 300 connects RSD
The control terminal of breaking circuit 400；Signal receiving circuit 200 receives PLC sender unit and sends and pass through power line transmission
Power carrier signal；
The input of RSD breaking circuit 400 terminates the positive PV+ of corresponding photovoltaic panel, the positive output node of output termination the same level
VSTRING+；The control of RSD breaking circuit 400 terminates logic control circuit 300；
The current input terminal of bypass freewheeling circuit 500 meets the negative output node OUT- of the same level, and current output terminal connects the just defeated of the same level
Egress VSTRING+；
The cathode PV- of photovoltaic panel meets the negative output node OUT- of the same level；
Series connection for circuits at different levels,
The positive output node VSTRING+ of first order circuit connects the positive input terminal of inverter, and in the positive output section of first order circuit
PLC sender unit is set on route between point VSTRING+ and inverter positive input terminal；
The positive output node VSTRING+ of the negative output node OUT- connection second level circuit of first order circuit；From second level circuit
Start, the positive output node VSTRING+ of the negative output node OUT- connection next stage circuit of every primary circuit, afterbody electricity
The negative input end of the negative output node OUT- connection inverter on road；
As shown in Fig. 2, charge pump circuit 100 include charge pump and power supply chip U1, square-wave generator, diode D1, D3, D4,
D5, D6, capacitor C6, C8；SP1501 or other similar chips can be used with power supply chip U1 in charge pump；
The anode of diode D1 meets the positive PV+ of photovoltaic panel, and cathode connects the voltage of charge pump Yu power supply chip U1 by resistance R1
Input terminal；The square wave input end (14 foot) of charge pump and power supply chip U1 connect the output of square-wave generator；Square wave occurs in this example
Base chip U2 and peripheral cell when device uses 555, such as resistance R2, R3, capacitor C4, C5 are constituted, this part is mature circuit；
A voltage output end (11 foot) of charge pump and power supply chip U1 export fixed operating voltage, such as 10v, charge pump with for battery core
The square wave output end (9 foot) of piece U1 connects one end of capacitor C6, the cathode of another terminating diode D3 of capacitor C6 and the anode of D4；
The positive PV+ of one termination photovoltaic panel of the anode and resistance R6 of diode D6, the anode of diode D5 connect the just defeated of the same level
Egress VSTRING+；The cathode of diode D6 connects the anode of the cathode of D5, the other end of resistance R20 and diode D3, capacitor
The both ends of C8 connect the anode of diode D3 and the cathode of D4 respectively；The cathode output of diode D4 mentions the output voltage of photovoltaic panel
Voltage after rising, connects RSD breaking circuit 400 by resistance R8；
As shown in Fig. 2, signal receiving circuit 200 includes signal receiving chip U3, crystal oscillator source X1, carrier wave reception circuit；Signal connects
The TPS9361 that chip U3 uses Wuxi silicon power micro-electronic Co., Ltd is received, other power carrier signals can also be used
Receive chip；
The clock end (7 foot) of signal receiving chip U3 connects crystal oscillator source X1, the power carrier signal input terminal of signal receiving chip U3
(8 feet, 9 feet) carry wave and receive circuit；The input that carrier wave receives circuit meets the positive output node VSTRING+ of the same level；
It includes capacitor C17, resistance R21, receiving transformer T1, resistance R13, R14, R15, capacitor in circuit this example that carrier wave, which receives,
C10, C11, C12, zener diode ZD1, ZD2；The positive output node VSTRING of termination the same level of capacitor C17 and resistance R21
+, the primary Same Name of Ends of another termination receiving transformer T1 of capacitor C17, the primary different name end of receiving transformer T1 and resistance R21
Another termination the same level photovoltaic panel cathode PV-；Secondary one end terminating resistor R15 of the same name, capacitor C12 mono- of receiving transformer T1
End, the one end capacitor C10 and zener diode ZD1 cathode；The secondary different name terminating resistor R15 other end, the electricity of receiving transformer T1
Hold the C12 other end, the one end capacitor C11 and zener diode ZD2 cathode；The plus earth of zener diode ZD1 and ZD2；Capacitor
The C10 other end connects a carrier signal input pin of signal receiving chip U3 by resistance R13, and the capacitor C11 other end passes through
Resistance R14 connects another carrier signal input pin of signal receiving chip U3；
The feeder ear (18,19 foot) of signal receiving chip U3 connects the fixation work electricity of the generation of charge pump circuit 100 by resistance R18
Pressure, such as 10v；The control output end (11 foot) of signal receiving chip U3 connects logic control circuit 300；
In this example, signal receiving chip U3 also passes through the low-voltage VOUT that one voltage output end (4 foot) generates a 1v,
In other embodiments, the low-voltage VOUT of the 1v can be generated by an individual voltage transformation module；
Logic control circuit 300 includes resistance R9, R10, R11, NMOS tube N1, N3；
RSD breaking circuit 400 include NMOS tube Q1, Q2, N4, N5, zener diode ZD4, ZD5, ZD6, ZD7, resistance R12,
R22,R23；
One end of resistance R11 and the grid of NMOS tube N3 connect the control output end of signal receiving circuit 200 (i.e. by resistance R19
11 feet of U3), the other end of resistance R11 and the source electrode ground connection of N3；One end drain electrode connecting resistance R10 of NMOS tube N3, resistance R9 mono-
It holds, the grid of NMOS tube N4 and N5；The fixation operating voltage of another termination charge pump circuit output of resistance R10, such as 10v；Electricity
Hinder the grid of another termination NMOS tube N1 of R9；The drain electrode of NMOS tube N4 meets the low-voltage VOUT of 1v；The low electricity of circuits at different levels
The sum of pressure VOUT needs to be less than safe voltage；VOUT is generated by signal receiving circuit 200 in this example, but can also be by another solely
Vertical voltage transformation module generates；The source electrode of NMOS tube N4 connects the source electrode of N5, and the drain electrode of N5 connects the just defeated of the same level by resistance R12
Egress VSTRING+；
The drain electrode of NMOS tube Q1 connects the one end grid connecting resistance R8, one end resistance R22, pressure stabilizing of photovoltaic panel the anode PV+, Q1 of the same level
The drain electrode of the cathode of diode ZD4 and ZD7, the grid of NMOS tube Q2, resistance R23 one end, NMOS tube N1；The source electrode of N1 is grounded；
RSD breaking circuit connects the voltage of the another output output of charge pump circuit by resistance R8, i.e., to the output electricity of photovoltaic panel
Voltage after pressure promotion；
The drain electrode of source electrode connecting resistance the R22 other end, zener diode ZD5 cathode and NMOS tube Q2 of NMOS tube Q1, two pole of pressure stabilizing
The anode of pipe ZD4 and ZD5 docks, the cathode and the same level of the source electrode connecting resistance R23 other end of NMOS tube Q2, zener diode ZD6
Positive output node VSTRING+；The anode of zener diode ZD6 and ZD7 dock；
Bypassing freewheeling circuit 500 includes diode D2, and the anode of diode D2 flows into the negative output section of termination the same level as electric current
The cathode of point OUT-, D2 meet the positive output node VSTRING+ of the same level as current output terminal；Bypass the effect of freewheeling circuit 500
Be, after the photovoltaic panel of the same level is blocked, whole string photovoltaic module can from bypass freewheeling circuit afterflow, reduce energy loss, and
Realize the normal series connection of the superior and the subordinate's photovoltaic panel.
Under normal circumstances, PLC sender unit sends power carrier signal by power line；Signal receiving circuit 200
After receiving power carrier signal, control output end (i.e. 11 feet of U3) export high level, N3 conducting, the one end resistance R9 voltage
It is pulled low, N1 shutdown, N4 and N5 shutdown；The grid of Q1 and Q2 is high level, Q1 and Q2 conducting, RSD breaking circuit when N4 is turned off
Internal path conducting, thus opens the path of photovoltaic panel and the same level positive output node VSTRING+；And 1v when N4 and N5 shutdown
Low-voltage VOUT will not be loaded onto the path of the same level positive output node VSTRING+；
When the dangerous situations such as fire occur, PLC sender unit can taking human as closing, no longer transmitting electric power carrier signal,
The control output end (i.e. 11 feet of U3) of signal receiving circuit 200 exports low level, N3 shutdown, and the one end resistance R9 is high level,
N1 conducting, N4 and N5 conducting；When N1 is connected, the grid level of Q1 and Q2 are pulled low, Q1 and Q2 shutdown, inside RSD breaking circuit
Access cutting, thus the path of photovoltaic panel and the same level positive output node VSTRING+ are cut off；And when N4 and N5 conducting, 1v's is low
Voltage VOUT adds to the path of the same level positive output node VSTRING+；It is kept in inverter after low-voltage VOUT series connection at different levels
CPU work, and the sum of low-voltage VOUT at different levels control ensures the personal safety of fireman under 36v safe voltage.
Transient voltage can also be connected between the same level positive output node VSTRING+ and negative output node OUT- inhibits pipe
TVS plays a protective role.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (9)
1. a kind of intelligent photovoltaic switching off device characterized by comprising charge pump circuit (100), is patrolled at signal receiving circuit (200)
Collect control circuit (300), RSD breaking circuit (400)；
For the whole string photovoltaic module formed of being connected by photovoltaic panels at different levels, in circuits at different levels, intelligent photovoltaic switching off device corresponds to the same level
Photovoltaic panel；
The input of charge pump circuit (100) terminates the positive PV+ of corresponding photovoltaic panel, the fixed work of output end output one
Voltage, is supplied to signal receiving circuit and logic control circuit, and the another output of charge pump circuit (100) connects RSD shutdown
The output voltage of photovoltaic panel is promoted a voltage value and supplied to RSD breaking circuit (400) by circuit (400)；
The positive output node VSTRING+ of input termination the same level of signal receiving circuit (200), the control of signal receiving circuit (200)
System output termination logic control circuit (300)；
The control signal of logic control circuit (300) derives from the signal receiving circuit (200), logic control circuit (300)
Connect the control terminal of RSD breaking circuit (400)；
The input of RSD breaking circuit (400) terminates the positive PV+ of corresponding photovoltaic panel, the positive output section of output termination the same level
Point VSTRING+；The control of RSD breaking circuit (400) terminates logic control circuit (300).
2. intelligent photovoltaic switching off device as described in claim 1, which is characterized in that
It further include bypass freewheeling circuit (500), the current input terminal of bypass freewheeling circuit (500) connects the negative output node of the same level
OUT-, current output terminal meet the positive output node VSTRING+ of the same level；
The cathode PV- of photovoltaic panel meets the negative output node OUT- of the same level.
3. intelligent photovoltaic switching off device as described in claim 1, which is characterized in that
RSD breaking circuit (400) is also connected with a low-voltage VOUT, when so that RSD breaking circuit (400) turning off, can export this
Low-voltage VOUT；The sum of low-voltage VOUT of circuits at different levels needs to be less than safe voltage.
4. intelligent photovoltaic switching off device as claimed in claim 1,2 or 3, which is characterized in that
Charge pump circuit (100) includes charge pump and power supply chip U1, square-wave generator, diode D1, D3, D4, D5, D6, electricity
Hold C6, C8；
The anode of diode D1 meets the positive PV+ of photovoltaic panel, and cathode connects the voltage of charge pump Yu power supply chip U1 by resistance R1
Input terminal；The output of the square wave input of charge pump and power supply chip U1 termination square-wave generator；Charge pump is with power supply chip U1's
One voltage output end exports fixed operating voltage, and charge pump exports one end of termination capacitor C6 with the square wave of power supply chip U1,
The cathode of another terminating diode D3 of capacitor C6 and the anode of D4；
The positive PV+ of one termination photovoltaic panel of the anode and resistance R6 of diode D6, the anode of diode D5 connect the just defeated of the same level
Egress VSTRING+；The cathode of diode D6 connects the anode of the cathode of D5, the other end of resistance R20 and diode D3, capacitor
The both ends of C8 connect the anode of diode D3 and the cathode of D4 respectively；The cathode output of diode D4 mentions the output voltage of photovoltaic panel
Voltage after rising, connects RSD breaking circuit 400 by resistance R8.
5. intelligent photovoltaic switching off device as claimed in claim 1,2 or 3, which is characterized in that
Signal receiving circuit (200) includes signal receiving chip U3, crystal oscillator source X1, carrier wave reception circuit；
The clock of signal receiving chip U3 terminates crystal oscillator source X1, and the power carrier signal input terminal of signal receiving chip U3 carries wave
Receive circuit；The input that carrier wave receives circuit meets the positive output node VSTRING+ of the same level；
The feeder ear of signal receiving chip U3 connects the fixation operating voltage of charge pump circuit (100) generation by resistance R18；Signal
The control output end for receiving chip U3 connects logic control circuit (300).
6. intelligent photovoltaic switching off device as claimed in claim 5, which is characterized in that
Carrier wave receive circuit include capacitor C17, resistance R21, receiving transformer T1, resistance R13, R14, R15, capacitor C10, C11,
C12, zener diode ZD1, ZD2；The positive output node VSTRING+ of termination the same level of capacitor C17 and resistance R21, capacitor
The primary Same Name of Ends of another termination receiving transformer T1 of C17, the primary different name end of receiving transformer T1 and resistance R21's is another
Terminate the cathode PV- of the same level photovoltaic panel；Secondary one end terminating resistor R15 of the same name, one end capacitor C12, electricity of receiving transformer T1
Hold the one end C10 and zener diode ZD1 cathode；The secondary different name terminating resistor R15 other end, the capacitor C12 of receiving transformer T1
The other end, the one end capacitor C11 and zener diode ZD2 cathode；The plus earth of zener diode ZD1 and ZD2；Capacitor C10 is another
One end connects a carrier signal input pin of signal receiving chip U3 by resistance R13, and the capacitor C11 other end passes through resistance
R14 connects another carrier signal input pin of signal receiving chip U3.
7. intelligent photovoltaic switching off device as claimed in claim 5, which is characterized in that
Signal receiving chip U3 also passes through one voltage output end and generates a low-voltage VOUT；The low-voltage of circuits at different levels
The sum of VOUT needs to be less than safe voltage.
8. intelligent photovoltaic switching off device as claimed in claim 1,2 or 3, which is characterized in that
Logic control circuit (300) includes resistance R9, R10, R11, NMOS tube N1, N3；
RSD breaking circuit (400) include NMOS tube Q1, Q2, N4, N5, zener diode ZD4, ZD5, ZD6, ZD7, resistance R12,
R22,R23；
One end of resistance R11 and the grid of NMOS tube N3 connect the control output end of signal receiving circuit 200 by resistance R19, electricity
Hinder the other end of R11 and the source electrode ground connection of N3；One end drain electrode connecting resistance R10 of NMOS tube N3, the one end resistance R9, NMOS tube N4 and
The grid of N5；The fixation operating voltage of another termination charge pump circuit output of resistance R10；Another termination NMOS tube of resistance R9
The grid of N1；The drain electrode of NMOS tube N4 meets low-voltage VOUT；The sum of low-voltage VOUT of circuits at different levels needs to be less than safe electricity
Pressure；The source electrode of NMOS tube N4 connects the source electrode of N5, and the drain electrode of N5 meets the positive output node VSTRING+ of the same level by resistance R12；
The drain electrode of NMOS tube Q1 connects the one end grid connecting resistance R8, one end resistance R22, pressure stabilizing of photovoltaic panel the anode PV+, Q1 of the same level
The drain electrode of the cathode of diode ZD4 and ZD7, the grid of NMOS tube Q2, resistance R23 one end, NMOS tube N1；The source electrode of N1 is grounded；
RSD breaking circuit connects the voltage of the another output output of charge pump circuit by resistance R8, i.e., to the output electricity of photovoltaic panel
Voltage after pressure promotion；
The drain electrode of source electrode connecting resistance the R22 other end, zener diode ZD5 cathode and NMOS tube Q2 of NMOS tube Q1, two pole of pressure stabilizing
The anode of pipe ZD4 and ZD5 docks, the cathode and the same level of the source electrode connecting resistance R23 other end of NMOS tube Q2, zener diode ZD6
Positive output node VSTRING+；The anode of zener diode ZD6 and ZD7 dock.
9. intelligent photovoltaic switching off device as claimed in claim 2, which is characterized in that
Bypass freewheeling circuit (500) includes diode D2, and the anode of diode D2 flows into the negative output of termination the same level as electric current
The cathode of node OUT-, D2 meet the positive output node VSTRING+ of the same level as current output terminal.
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