CN208226555U - Photovoltaic module array cutoff device - Google Patents
Photovoltaic module array cutoff device Download PDFInfo
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- CN208226555U CN208226555U CN201820524054.1U CN201820524054U CN208226555U CN 208226555 U CN208226555 U CN 208226555U CN 201820524054 U CN201820524054 U CN 201820524054U CN 208226555 U CN208226555 U CN 208226555U
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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
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Abstract
The utility model discloses a kind of photovoltaic module array cutoff devices, for being connected to or disconnecting to photovoltaic module under the control of shutdown controller, including box body, box body has installation cavity, lid is provided on installation cavity, control circuit board is provided in installation cavity, the first connecting pin being electrically connected respectively with control circuit board and second connection end are provided on box body, it connects with shutdown controller the first connecting pin, second connection end is connected with adjacent photovoltaic component, wherein, control circuit board includes interconnection main control unit, controlled cell, power supply unit, interconnection box unit, interconnection main control unit is connected with the first connecting pin, interconnection main control unit generates a master signal under the action of turning off controller, power supply unit is connected to controlled cell, controlled cell generates a controlled signal under the action of master signal, interconnection switches unit is connect with second End is connected, and interconnection switches unit is connected to or disconnects under the action of controlled signal.By adopting the above-described technical solution, the fast and safely shutdown of each component in system can be realized automatically in the utility model, to guarantee personnel safety.
Description
Technical field
The utility model relates to a kind of photovoltaic module array turning off system.
Background technique
Photovoltaic cell is the device that solar radiation energy is directly changed into electric energy, and photovoltaic module is exactly by multiple photovoltaics
Product made of battery connection and encapsulation, is the basic unit of battery array in photovoltaic generating system.When photovoltaic module array goes out
When existing failure, need to turn off power grid, however photovoltaic module is electricity generation system, each series connection basic unit has high voltage,
To maintenance personal, there are security risks, it is therefore desirable to provide a kind of turning off system of fast intelligent, system can be realized automatically
In each component fast and safely shutdown, to guarantee personnel safety.
Summary of the invention
To overcome disadvantages mentioned above, the utility model aim, which is to provide, a kind of can be realized automatically each component in system
The photovoltaic module array cutoff device fast and safely turned off.
In order to reach the goals above, the utility model provides a kind of photovoltaic module array cutoff device, for turning off
Photovoltaic module is connected to or is disconnected under the control of controller, including box body, the box body is built-in or is placed outside photovoltaic module,
The box body has installation cavity, is provided with lid on the installation cavity, is provided with control circuit board in the installation cavity,
The first connecting pin being electrically connected respectively with the control circuit board and second connection end are provided on the box body, it is described
First connecting pin is connected with shutdown controller, and the second connection end is connected with adjacent photovoltaic component, wherein the control
Circuit board includes interconnection main control unit, controlled cell, power supply unit, interconnection box unit, the interconnection main control unit and institute
The first connecting pin stated is connected, and the interconnection main control unit generates a master signal under the action of turning off controller, described
Power supply unit be connected to the controlled cell, the controlled cell generates a controlled letter under the action of master signal
Number, the interconnection box unit is connected with the second connection end, and the interconnection box unit is in the controlled letter
It is connected to or disconnects under the action of number.
Preferably, first connecting pin and second connection end are fixed on the box body, alternatively, described
First connecting pin and second connection end are arranged on the box body by extension line.
Preferably, support body is provided in the installation cavity, the control circuit board is mounted on the support body
Upper surface, the lower surface of the support body is provided with high pressure sleeve and low pressure sleeve, and one end of the low pressure sleeve is deep
The first connecting pin, the other end described in entering pass through support body and the corresponding contact of the lower surface of control circuit board connects, described
The second connection end is goed deep into one end of high pressure sleeve, the other end passes through support body and is connected with conductive sheet, the conductive sheet
It is connected with the corresponding contact of the lower surface of control circuit board.
Preferably, there is the conductive sheet the first joint face, extended segment and connection needle, the high pressure sleeve to have
Second joint face, first joint face, the second joint face are adjacent to and are fixedly connected by electric resistance welding.
Preferably, first connecting pin is located at the inside of second connection end.
It preferably, further include hook, the inner end of the hook is connected with support body, the outer end of the hook and light
Lie prostrate component connection.
Preferably, first connecting pin, second connection end extension line be threaded through in box body, the extension line is logical
The line card buckle crossed in installation cavity is fixed, and the lower section of the control circuit board has welding hole, passes through the welding
The extension thread end of first connecting pin, second connection end is soldered to the correspondence contact of the lower surface of control circuit board by hole
Afterwards, seal cap is installed on the welding hole.
Preferably, the both ends of the control circuit board have fixed-wing, and the fixed-wing correspondence is inserted in line card.
Preferably, control connection is realized by photoelectric coupling switch between the interconnection main control unit and controlled cell,
The photoelectric coupling switch includes a light emitting diode D and one by light-operated phototriode T；
The interconnection box unit includes a metal-oxide-semiconductor field effect transistor, and the grid of metal-oxide-semiconductor field effect transistor is connected to described controlled
Unit；
The controlled cell includes:
It is connected to the phototriode T and resistance R1 of power supply unit, resistance R1 is connected to the collector of phototriode T；
It is connected to the complementary push-pull circuit of power supply unit, the complementary push-pull circuit includes triode T2, resistance R3, three
Pole pipe T3 and resistance R4, the triode T2, one of triode T3 be NPN type triode, the other is three pole of positive-negative-positive
Pipe, the triode T2, the base stage of triode T3 are connected, and collector is in parallel, and emitter is connected in parallel in metal-oxide-semiconductor field effect transistor
For grid with output-controlled signal, resistance R3 is connected to the emitter of triode T2, and resistance R4 is connected to the emitter of triode T3；
The triode T1 and resistance R2, the base stage of the triode T1 for being connected to power supply unit are connected to phototriode
The collector of the collector of T, the triode T1 is connected to the base stage of triode T2, triode T3.
Preferably, the power supply unit includes taking electric input unit, DC/DC converter, pressure stabilizing output unit, described
Electric input unit is taken to be connected to the output end of photovoltaic module, the pressure stabilizing output unit is connected to the controlled cell,
In,
The DC/DC converter has the end VIN, the end EN, the end SW, the end FB, the end CB, the end GND, and described takes electricity input single
Member includes counnter attack diode D1, filter capacitor C2, the filter capacitor C3 for being connected to the end VIN, the end EN；
The pressure stabilizing output unit include the energy storage inductor L1 for being connected to the end SW, sampling resistor R11, sampling resistor R12,
Sustained diode 2, filter capacitor C4, the end filter capacitor C5, FB are connected between sampling resistor R1 and sampling resistor R2, the end CB
Partially installing capacitor C1 is connected between the end SW.
By adopting the above-described technical solution, each component can be realized automatically in system fast and safely in the utility model
Shutdown, to guarantee personnel safety.
Detailed description of the invention
Attached drawing 1 is the perspective view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model
One；
Attached drawing 2 is the perspective view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model
Two；
Attached drawing 3 is the side view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model；
Attached drawing 4 is the broken away view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model；
Attached drawing 5 is the perspective view of the embodiment two of the power supply unit of the photovoltaic module array cutoff device of the utility model；
Attached drawing 6 is the broken away view of the embodiment two of the power supply unit of the photovoltaic module array cutoff device of the utility model；
Attached drawing 7 is the system framework figure of the embodiment one of the photovoltaic module array cutoff device of the utility model；
Attached drawing 8 is the circuit diagram of the photovoltaic module array cutoff device of the utility model；
Attached drawing 9 is the circuit diagram of the power supply unit of the photovoltaic module array cutoff device of the utility model；
Attached drawing 10 is the system framework figure of the embodiment two of the photovoltaic module array cutoff device of the utility model.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Attached drawing 1 is the perspective view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model
One, attached drawing 2 is the perspective view two of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model, attached drawing
3 be the side view of the embodiment one of the power supply unit of the photovoltaic module array cutoff device of the utility model, and attached drawing 4 is that this is practical
The broken away view of the embodiment one of the power supply unit of novel photovoltaic module array cutoff device.Photovoltaic module battle array in the present embodiment
Column cutoff device, including box body 1, box body 1 is built-in or is placed outside photovoltaic module, and box body 1 has installation cavity 2, sets on installation cavity 2
It is equipped with lid 3,3 edge of lid is provided with sealing ring 16 to guarantee the waterproof performance of circuit.Control circuit is provided in installation cavity 2
Plate 4 is provided with the first connecting pin 5 being electrically connected respectively with control circuit board 4 and second connection end 6, the first connecting pin on box body 1
5 connect with shutdown controller, and second connection end 6 is connected with adjacent photovoltaic component.
The first connecting pin 5 and second connection end 6 in the present embodiment are fixedly disposed on box body 1, and first connects
Connect the inside that end 5 is located at second connection end 6.Support body 7 is provided in installation cavity 2, control circuit board 4 is mounted on support body 7
Upper surface, the lower surface of support body 7 are provided with high pressure sleeve 8 and low pressure sleeve 9, and the first connection is goed deep into one end of low pressure sleeve 9
End 5, the other end pass through support body 7 and connect with the corresponding contact of the lower surface of control circuit board 4, and one end of high pressure sleeve 8 is goed deep into
Second connection end 6, the other end pass through support body 7 and are connected with conductive sheet 10, pair of conductive sheet 10 and the lower surface of control circuit board 4
Contact is answered to connect.The outside of box body 1 is additionally provided with hook 15, and the inner end of hook 15 is connected fixed to play with support body 7
Effect, the outer end of hook 15 is connect with photovoltaic module.Conductive sheet 10 has the first joint face 11, extended segment 12 and connection needle
13, high pressure sleeve 8 has the second joint face 14, and the first joint face 11, the second joint face 14 are adjacent to and connect by the way that electric resistance welding is fixed
It connects, since the voltage of high pressure sleeve 8 is higher (1500V or more), the excessively high generation of local temperature is dangerous in order to prevent, conductive sheet 10
Be relatively large in diameter, length is longer, surface area is larger, enhance the effect of heat dissipation.
Control circuit board includes interconnection main control unit, controlled cell, power supply unit, interconnection box unit, interconnects master control list
Member is connected with the first connecting pin, and interconnection main control unit generates a master signal under the action of turning off controller, and power supply unit connects
It is connected to controlled cell, controlled cell generates a controlled signal under the action of master signal, and interconnection box unit is connect with second
End is connected, and interconnection box unit is connected to or disconnects under the action of controlled signal.
Attached drawing 5 is the perspective view of the embodiment two of the power supply unit of the photovoltaic module array cutoff device of the utility model,
Attached drawing 6 is the broken away view of the embodiment two of the power supply unit of the photovoltaic module array cutoff device of the utility model.The present embodiment
In, the first connecting pin 5 and second connection end 6 are arranged on box body 1 by extension line 21, and the first connecting pin 5 is located at box body 1 in figure
Lower section both ends, second connection end 6 is located at the top both ends of box body 1, the first connecting pin 5, second connection end 6 extension line 21 wear
It is located in box body 1, extension line 21 is buckled by the line card 17 being located in installation cavity 2 and fixed, and the lower section of control circuit board 4 has weldering
Connect hole 19, when installation can be by control circuit board 4 by corresponding be inserted on line card 17 of the fixed-wing 18 at the both ends of control circuit board 4
It is fixed, 21 end of extension line of the first connecting pin 5, second connection end 6 is then soldered to by control circuit board by welding hole 19
Lower surface correspondence contact, seal cap 20 is installed on welding hole 19.
Attached drawing 7 is the system framework figure of the embodiment one of the photovoltaic module array cutoff device of the utility model, is used for
Shutdown control is carried out to photovoltaic module array, including shutdown controller and a plurality of independent cutoff devices, cutoff device have
First connecting pin and second connection end, cutoff device are series between DC bus by second connection end and photovoltaic module, just,
Negative terminal is DC bus, is connected to inverter, and for each cutoff device between adjacent photovoltaic component, cutoff device passes through first
Connecting pin is connected with shutdown controller formation, and turning off system is the dress for being turned off photovoltaic cell component string by turning off controller
It sets, shutdown controller is the circuit for controlling cutoff device on-off, operates as needed to shutdown controller, turns off controller
On a preset condition based all cutoff devices in control circuit simultaneously be switched on or off with control the connection of photovoltaic module circuit or
It disconnects.
Cutoff device includes interconnection main control unit, controlled cell, power supply unit, interconnection box unit, interconnects main control unit
With second connection end, interconnects main control unit and generate a master signal under the action of turning off controller, power supply unit is connected to
Controlled cell, controlled cell generate a controlled signal under the action of master signal, and interconnection box unit has the first connecting pin,
Interconnection box unit is connected to or disconnects under the action of controlled signal.When needing to connect photovoltaic cell component string, shutdown is controlled
Device processed carries out logical operation, the conducting of interconnection box unit, and photovoltaic cell component string is all connected to, and direct current energy passes to inverter, into
Row power generation.When needing to turn off photovoltaic cell component string, shutdown operation is carried out to shutdown controller, is turned off at interconnection box unit
State, photovoltaic cell component string is all off, and DC bus both end voltage drops to zero, to realize safe shutdown.
Attached drawing 8 is the circuit diagram of the photovoltaic module array cutoff device of the utility model.The previous photovoltaic module of Z1 connection, Z2
Connect latter photovoltaic module.It interconnects and control connection, photoelectricity is realized by photoelectric coupling switch between main control unit and controlled cell
Coupled switch includes a light emitting diode D and one by light-operated phototriode T, D and T composition photoelectric coupling, to transmit letter
Number and isolation, due to the input impedance very little of photoelectrical coupler, though the amplitude of interference voltage is larger, but feed back arrive photoelectric coupling
The noise voltage meeting very little of device input terminal, can be only formed very faint electric current, to be suppressed.The input of photoelectrical coupler
There is no electrical link between circuit and output loop, also without altogether, between distribution capacity it is smaller, and insulation resistance is very
Greatly, therefore the various jamming incoherent signals on circuit one side are all difficult to be transferred to another side by photoelectrical coupler, avoid total impedance coupling
The generation of the interference signal of conjunction.In addition, photoelectrical coupler can be very good to play the role of safety guarantee, even if when external equipment goes out
When existing failure or even input signal are shorted, component will not be damaged because the input circuit and output loop of photoelectrical coupler it
Between can bear several kilovolts of high pressure.Finally, the response speed of photoelectrical coupler is exceedingly fast, responds delay time and only have 10 μ s left
The right side is suitble in the present invention to the response very high occasion of rate request.
The previous interconnection box unit of K1 connection, the latter interconnection box unit of K2 connection, interconnection box unit include a MOS
The grid of effect pipe, metal-oxide-semiconductor field effect transistor is connected to controlled cell.
V is voltage source, is powered for controlled cell, and structural principle describes in detail later.Controlled cell includes: to connect
It is connected to the phototriode T and resistance R1 of power supply unit, resistance R1 is connected to the collector of phototriode T；It is connected to power supply
The complementary push-pull circuit of unit, complementary push-pull circuit include triode T2, resistance R3, triode T3 and resistance R4, triode T2,
One of triode T3 is NPN type triode, the other is PNP type triode, triode T2, triode T3 base stage be connected,
Collector is in parallel, and emitter is connected in parallel in the grid of metal-oxide-semiconductor field effect transistor with output-controlled signal, and resistance R3 is connected to triode
The emitter of T2, resistance R4 are connected to the emitter of triode T3；It is connected to the triode T1 and resistance R2 of power supply unit, three poles
The base stage of pipe T1 is connected to the collector of phototriode T, and the collector of triode T1 is connected to triode T2, triode T3
Base stage.
" complementation " be by using the triode of two kinds of opposed polarities, using opposed polarity triode input polarity not
Together, the triode of two opposed polarities is motivated with a signal, one is NPN type triode, the other is three pole of positive-negative-positive
The base stage of pipe, two triodes is connected, and adds an input signal to make driving signal in the base stage of two pipes.Two pipe base stages and emitter
Parallel connection, since the polarity of two triodes is different, applied signal voltage in base stage is forward bias for one for two pipes, one
A is reverse bias.When an input signal is present, voltage increases two pipe base stages simultaneously, and applied signal voltage is to a pipe plus just at this time
To bias voltage, so the pipe enters conducting and magnifying state.Since base voltage increases, plus reversed inclined for another pipe
Voltage is set, so the pipe is in off state.When there is no input signal, two pipe base stages voltage decline simultaneously, it is positive to another pipe
Biasing makes the pipe enter conducting and magnifying state, and a pipe enters off state.
Of the invention rapidly switches off circuit operation principle: when needing photovoltaic system to be connected to work, control signal is flowed by K1
It shines to K2, D, T conducting, T1 cut-off, the lower end R2 high level, T3, which is connected, in T2 ends, the grid high level of T4, T4 conducting, photovoltaic
System is connected.When needing photovoltaic system quickly to disconnect, the signal between K1K2 is cut off, D does not shine, T cut-off, T1 saturation, R2
Lower end is low level, and T2 ends T3 conducting, and the grid of T4 is low level, T4 cut-off, photovoltaic system disconnection.
Attached drawing 9 is the circuit diagram of the power supply unit of the photovoltaic module array cutoff device of the utility model, power supply unit packet
It includes and takes electric input unit, DC/DC converter, pressure stabilizing output unit, take electric input unit to be connected to the output end of photovoltaic module, surely
Pressure output unit is connected to controlled cell, and DC/DC converter therein uses DC/DC chip, and DC/DC chip is a current-mode
The buck converter of formula, it has very wide input voltage range 4.5V ~ 52V, is suitable for various applications, adjusts unstable
Power supply to fixed stablizes output.The switching of built-in 0.9 Ω of low resistance switchs, so that the IC possesses 85% works fine effect
Rate, in addition the advantages of being effectively reduced chip surface temperature.
DC/DC chip has the end VIN, the end EN, the end SW, the end FB, the end CB, the end GND, and VIN, GND are the input terminals of this power supply,
Electricity is taken from photovoltaic module.Taking electric input unit includes being connected to the end VIN, the counnter attack diode D1 at the end EN, filter capacitor C2, filter
Wave capacitor C3.V, GND is the output end of this power supply, rapidly switches off circuit power supply for photovoltaic.Pressure stabilizing output unit includes being connected to
Energy storage inductor L1, sampling resistor R11, sampling resistor R12, sustained diode 2, filter capacitor C4, the filter capacitor C5 at the end SW,
The end FB is connected between sampling resistor R1 and sampling resistor R2, and partially installing capacitor C1 is connected between the end CB and the end SW.
This circuit takes electricity by VIN, GND from photovoltaic module, prevent by D1 it is reversed, by C2, C3 filter decoupling, made by U1
DC/DC transformation, through L1 energy storage D2 afterflow, C4, C5 filtering, by R1, R2 sampling feedback to U1, to obtain required for subsequent conditioning circuit
Burning voltage.
Attached drawing 10 is the system framework figure of the embodiment two of the photovoltaic module array cutoff device of the utility model, this implementation
Photovoltaic component terminal box cutoff device in example is similar in embodiment one, distinguishes the cutoff device being in this implementation one by one
It is corresponding to be arranged inside photovoltaic module, it is integrated specifically, can also be with photovoltaic component terminal box, as photovoltaic group
The separate unit of part terminal box exists, thus it is simpler using installing, therefore the utility model can be realized automatically in system
The fast and safely shutdown of each component, to guarantee personnel safety.
Embodiment of above is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill
The people of art understands the content of the utility model and is implemented, and does not limit the protection scope of the present invention, and all
According to the equivalent change or modification that the spirit of the present invention is substantially done, should all cover within the protection scope of the present utility model.
Claims (10)
1. a kind of photovoltaic module array cutoff device, for being connected to or disconnecting to photovoltaic module under the control of shutdown controller,
It is characterized by comprising box body, the box body is built-in or is placed outside photovoltaic module, and the box body has installation cavity, institute
It is provided with lid on the installation cavity stated, control circuit board is provided in the installation cavity, difference is provided on the box body
The first connecting pin being electrically connected with the control circuit board and second connection end, first connecting pin and shutdown controller
Series connection, the second connection end are connected with adjacent photovoltaic component, wherein the control circuit board includes interconnection master control list
Member, controlled cell, power supply unit, interconnection box unit, the interconnection main control unit are connected with first connecting pin, institute
The interconnection main control unit stated generates a master signal under the action of turning off controller, and the power supply unit is connected to described
Controlled cell, the controlled cell generate a controlled signal under the action of master signal, the interconnection switches unit with
The second connection end is connected, and the interconnection switches unit is connected to or disconnects under the action of the controlled signal.
2. photovoltaic module array cutoff device according to claim 1, it is characterised in that: first connecting pin and
Two connecting pins are fixed on the box body, alternatively, first connecting pin and second connection end are set by extension line
It sets on the box body.
3. photovoltaic module array cutoff device according to claim 1, it is characterised in that: be provided in the installation cavity
Support body, the control circuit board are mounted on the upper surface of the support body, and the lower surface of the support body is provided with
High pressure sleeve and low pressure sleeve, first connecting pin is goed deep into one end of the low pressure sleeve, the other end passes through support body
It is connected with the corresponding contact of the lower surface of control circuit board, the deep second connection end in one end of the high pressure sleeve,
The other end passes through support body and is connected with conductive sheet, and the conductive sheet is connected with the corresponding contact of the lower surface of control circuit board.
4. photovoltaic module array cutoff device according to claim 3, it is characterised in that: the conductive sheet has first
Joint face, extended segment and connection needle, the high pressure sleeve have the second joint face, and first joint face, second connect
Junction is adjacent to and is fixedly connected by electric resistance welding.
5. photovoltaic module array cutoff device according to claim 1, it is characterised in that: first connecting pin is located at
The inside of second connection end.
6. photovoltaic module array cutoff device according to claim 1, it is characterised in that: it further include hook, the card
The inner end of hook is connected with support body, and the outer end of the hook is connect with photovoltaic module.
7. photovoltaic module array cutoff device according to claim 6, it is characterised in that: first connecting pin,
The extension line of two connecting pins is threaded through in box body, and the extension line is buckled by the line card being located in installation cavity and fixed, described
The lower section of control circuit board there is welding hole, by the welding hole by first connecting pin, second connection end
Behind the correspondence contact for extending the lower surface that thread end is soldered to control circuit board, seal cap is installed on the welding hole.
8. photovoltaic module array cutoff device according to claim 7, it is characterised in that: the two of the control circuit board
End has fixed-wing, and the fixed-wing correspondence is inserted in line card.
9. photovoltaic module array cutoff device according to claim 1, it is characterised in that:
Control connection, the photoelectricity coupling are realized by photoelectric coupling switch between the interconnection main control unit and controlled cell
Combination switch includes a light emitting diode D and one by light-operated phototriode T；
The interconnection box unit includes a metal-oxide-semiconductor field effect transistor, and the grid of metal-oxide-semiconductor field effect transistor is connected to the controlled list
Member；
The controlled cell includes:
It is connected to the phototriode T and resistance R1 of power supply unit, resistance R1 is connected to the collector of phototriode T；
It is connected to the complementary push-pull circuit of power supply unit, the complementary push-pull circuit includes triode T2, resistance R3, triode
T3 and resistance R4, the triode T2, one of triode T3 be NPN type triode, the other is PNP type triode, institute
The base stage of the triode T2, triode T3 that state are connected, and collector is in parallel, and emitter is connected in parallel in the grid of metal-oxide-semiconductor field effect transistor
With output-controlled signal, resistance R3 is connected to the emitter of triode T2, and resistance R4 is connected to the emitter of triode T3；
The triode T1 and resistance R2, the base stage of the triode T1 for being connected to power supply unit are connected to phototriode T's
The collector of collector, the triode T1 is connected to the base stage of triode T2, triode T3.
10. photovoltaic module array cutoff device according to claim 1, it is characterised in that: the power supply unit includes
Take electric input unit, DC/DC converter, pressure stabilizing output unit, the output for taking electric input unit to be connected to photovoltaic module
End, the pressure stabilizing output unit are connected to the controlled cell；Wherein,
The DC/DC converter has the end VIN, the end EN, the end SW, the end FB, the end CB, the end GND, and described takes electric input unit packet
Include counnter attack diode D1, filter capacitor C2, the filter capacitor C3 for being connected to the end VIN, the end EN；
The pressure stabilizing output unit includes the energy storage inductor L1, sampling resistor R11, sampling resistor R12, afterflow for being connected to the end SW
Diode D2, filter capacitor C4, the end filter capacitor C5, FB are connected between sampling resistor R1 and sampling resistor R2, the end CB and SW
Partially installing capacitor C1 is connected between end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524054.1U CN208226555U (en) | 2018-04-13 | 2018-04-13 | Photovoltaic module array cutoff device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820524054.1U CN208226555U (en) | 2018-04-13 | 2018-04-13 | Photovoltaic module array cutoff device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208226555U true CN208226555U (en) | 2018-12-11 |
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ID=64528942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820524054.1U Active CN208226555U (en) | 2018-04-13 | 2018-04-13 | Photovoltaic module array cutoff device |
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| Country | Link |
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| CN (1) | CN208226555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886339A (en) * | 2018-04-13 | 2018-11-23 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array cutoff device |
-
2018
- 2018-04-13 CN CN201820524054.1U patent/CN208226555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886339A (en) * | 2018-04-13 | 2018-11-23 | 苏州谐通光伏科技股份有限公司 | Photovoltaic module array cutoff device |
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