CN207150526U - Multicompartment level Quick shut-off device and photovoltaic system - Google Patents
Multicompartment level Quick shut-off device and photovoltaic system Download PDFInfo
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- CN207150526U CN207150526U CN201721225629.1U CN201721225629U CN207150526U CN 207150526 U CN207150526 U CN 207150526U CN 201721225629 U CN201721225629 U CN 201721225629U CN 207150526 U CN207150526 U CN 207150526U
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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
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- 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
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Abstract
The utility model discloses the multicompartment level Quick shut-off device for being used for controlling photovoltaic module string in a kind of photovoltaic system, photovoltaic module string includes multiple photovoltaic modulies being cascaded, and multicompartment level Quick shut-off device includes microcontroller, communication unit, drive circuit, accessory power supply, switch element and output bypass diode；Microcontroller is communicated with communication unit and controls drive circuit, communication unit is used to transmit instructions to microcontroller, drive circuit is according to the order-driven switch element of microcontroller, accessory power supply is powered by photovoltaic module, switch element includes multiple switch, switch it is corresponding with photovoltaic module and be connected to photovoltaic module form series circuit in, drive circuit with switch be connected respectively with the shut-off of controlling switch with it is open-minded；It has compared with high performance-price ratio and can reduce energy expenditure.
Description
Technical field
It the utility model is related to technical field of photovoltaic power generation, more particularly to a kind of multicompartment level Quick shut-off device and photovoltaic
System.
Background technology
Solar energy is as a kind of low-carbon regenerative resource, not only aboundresources, environmentally safe, and be that the mankind can
The energy freely utilized, therefore solar energy turns into the focus of people's attention with its exclusive advantage.Photovoltaic generation is as solar energy
It is most widely used in society now and is widelyd popularize, installation increases year by year.Distributed photovoltaic power generation system refers to
User scene or the less photovoltaic generating system of close electricity consumption situ configuration, to meet the needs of specific user, support existing matches somebody with somebody
The economical operation of power network, or meet the requirement in terms of the two simultaneously.
Distributed photovoltaic power generation system is typically mounted on building roof, because photovoltaic generating system is used as one kind is powered to set
It is standby, all the time with the presence of electric current in its internal and circuit.When fire occurs for building, it is timely that the presence of electric current can influence fire fighter
Sue and labour.With the continuous expansion of photovoltaic industry, the probability that accident occurs also is being continuously increased.At the same time, how photovoltaic is sent out
Electric system, which carries out the intellectualized operations such as the monitoring of intelligence, control access and disconnection, to be also a direction of current industry development and becomes
Gesture.Therefore in order to improve the safety of photovoltaic system, quick close is proposed to photovoltaic system in NEC2017 (U.S.'s electrician's bill 2017)
The requirement of disconnected (RS, Rapid Shutdown).
Existing shut-off mode is that a Quick shut-off device is accessed on each photovoltaic module, and cost is higher；In addition
In normal power generation, the switch of multiple Quick shut-off devices can form series connection corresponding to multiple photovoltaic modulies, produce larger lead
Logical loss, then influence the generating efficiency of photovoltaic module.
In view of this, it is necessory to propose a kind of high performance-price ratio, meet that the multicompartment level of NEC2017 standards requirement is quickly closed
Disconnected solution, to solve the above problems.
Utility model content
The purpose of this utility model is to provide a kind of multicompartment level Quick shut-off device and photovoltaic system, the multicompartment level
Quick shut-off device and photovoltaic system can effectively improve the generating efficiency of photovoltaic module and reduce energy expenditure, while have high property
Valency ratio.
To realize above-mentioned purpose of utility model, the utility model provides a kind of multicompartment level Quick shut-off device, is used in
Connected photovoltaic module string is controlled in photovoltaic system, the photovoltaic module string includes at least two photovoltaics being cascaded
Component；The multicompartment level Quick shut-off device includes microcontroller, communication unit, drive circuit, accessory power supply, switch element
With output bypass diode；The microcontroller is communicated with the communication unit and controls drive circuit, the communication unit
Member is used to transmit instructions to microcontroller, and the drive circuit is described according to the order-driven switch element of the microcontroller
Accessory power supply is powered by the photovoltaic module；The switch element includes at least two switches, the switch and the photovoltaic group
Part is corresponded and is connected in the circuit of corresponding photovoltaic module access series circuit, and the drive circuit is each opened with described
Pass connect respectively with the shut-off of controlling switch with it is open-minded.
As further improvement of the utility model, a photovoltaic module in the photovoltaic module string is as power supply photovoltaic
Component, the positive and negative terminal of the accessory power supply connect the positive and negative terminal of power supply photovoltaic module respectively；The switch is in corresponding photovoltaic
The negative terminal access of component accesses in the anode of corresponding photovoltaic module；It is described to switch in the negative terminal access of photovoltaic module,
In addition to switch corresponding to power supply photovoltaic module, rest switch is light-coupled isolation driving；The anode switched in photovoltaic module accesses
When, all switches are light-coupled isolation driving.
As further improvement of the utility model, multicompartment level Quick shut-off device one step include with it is described micro-
The sampling unit of controller connection, the sampling unit are used for the voltage for gathering photovoltaic module and temperature data and sent it to
Microcontroller.
As further improvement of the utility model, the initial and end end of the output bypass diode is attempted by photovoltaic module
The positive and negative terminal of string；The drive circuit by control signal amplify so that driving switch；The switch is MOSFET, IGBT or relay
One kind in device；The accessory power supply uses circuit of reversed excitation；The communication unit is direct current PLC or communication.
The utility model additionally provides another multicompartment level Quick shut-off device, controls in photovoltaic system and connects with it
The photovoltaic module string connect, the part string include at least two photovoltaic modulies being cascaded；The multicompartment level rapidly switches off
Device includes control unit, communication unit, accessory power supply, switch element and output bypass diode；The communication unit is used for
Transmission shut-off instruction, the accessory power supply are that control unit and communication unit are powered, and the switch element is opened including at least two
Close, the switch is corresponded and is connected on the series circuit of photovoltaic module string formation, the control with the photovoltaic module
Unit processed is connected respectively with described at least two switches, and when performing shut-off instruction, described control unit control is all to be switched off
Connection, then mutually disconnects each photovoltaic module.
As further improvement of the utility model, a photovoltaic module in the photovoltaic module string is as power supply photovoltaic
Component, the positive and negative terminal of the accessory power supply connect the positive and negative terminal of power supply photovoltaic module respectively；The switch is in corresponding photovoltaic
The negative terminal access of component accesses in the anode of corresponding photovoltaic module；Negative terminal access of the switch in corresponding photovoltaic module
When, in addition to switch corresponding to power supply photovoltaic module, rest switch is light-coupled isolation driving；Switch is corresponding to photovoltaic module just
Terminate it is fashionable, it is all switch be light-coupled isolation driving.
As further improvement of the utility model, the multicompartment level Quick shut-off device one step includes and the control
The sampling unit of unit connection processed, described control unit include microcontroller and drive circuit, and the sampling unit is used to sample
The voltage and temperature data of each photovoltaic module simultaneously send it to microcontroller.
As further improvement of the utility model, the initial and end end of the output bypass diode is attempted by photovoltaic module
The positive and negative terminal of string；The switch is one kind in MOSFET, IGBT or relay；Accessory power supply uses circuit of reversed excitation；It is described logical
Believe that unit is direct current PLC or communication.
The utility model additionally provides a kind of photovoltaic system, and the photovoltaic system includes at least one foregoing multicompartment level
Quick shut-off device and corresponding with the multicompartment level Quick shut-off device at least one photovoltaic module string, gateway and inversion
Device, input and the photovoltaic module series winding of the multicompartment level Quick shut-off device connect, and the multicompartment level rapidly switches off
The output end of device is connected with the input of the inverter, and the gateway is used to send finger to multicompartment level Quick shut-off device
Order, multicompartment level Quick shut-off device photovoltaic module string according to corresponding to instruction shut-off.
As further improvement of the utility model, the photovoltaic system also include be connected to the inverter and power network it
Between air switch, the gateway can be used as external autonomous device, can also be integrated into the inverter.
The beneficial effects of the utility model are：Multicompartment level Quick shut-off device of the present utility model can control simultaneously
The shut-off of multiple photovoltaic level assemblies in one photovoltaic module string, avoid each photovoltaic module of the prior art and be required to correspondingly
One cutoff device, so as to reduce the quantity of cutoff device, the control cost of photovoltaic module string is reduced, and further reduced
The system loss of photovoltaic system.
Brief description of the drawings
Fig. 1 is the schematic diagram of multicompartment level Quick shut-off device embodiment one provided by the utility model.
Fig. 2 is the schematic diagram of multicompartment level Quick shut-off device embodiment two provided by the utility model.
Fig. 3 is the schematic diagram of multicompartment level Quick shut-off device embodiment three provided by the utility model.
Fig. 4 is the schematic diagram of multicompartment level Quick shut-off device example IV provided by the utility model.
Fig. 5 is the schematic diagram of multicompartment level Quick shut-off device embodiment five provided by the utility model.
Fig. 6 is photovoltaic system schematic diagram provided by the utility model.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in detail example.
Refer to shown in Fig. 1, be the schematic diagram of multicompartment level Quick shut-off device embodiment one provided by the utility model.
The multicompartment level Quick shut-off device that the present embodiment provides is applied in photovoltaic generating system, to control connected photovoltaic group
Part string.The photovoltaic module string includes multiple photovoltaic module 101- photovoltaic modulies 10n being cascaded.The multicompartment level is fast
Fast cutoff device includes control unit, communication unit 201, accessory power supply 202, switch element, sampling unit 203 and output bypass
Diode D1.The switch element includes multiple switch Q1-Qn.
Described control unit includes microcontroller (MCU) 204 and drive circuit 205.The microcontroller 204 is as center
Controller, it can be communicated with the communication unit 201 and by the controlling switch unit of drive circuit 205 (switch Q1-Qn)
Shut-off with it is open-minded.The drive circuit 205 is connected respectively with switch Q1-Qn, and according to the instruction of microcontroller 204, will be controlled
Signal amplifies, and then each switch Q1-Qn of controlling switch unit is switched on or off.
The communication unit 201 uses plc communication, and the communication unit 201 is by being multiplexed dc bus cable and gateway
300 (ginseng Fig. 6) carry out direct current carrier communication.After PLC unit receives shut-off and the provisioning instruction of gateway 300, instruction is transmitted
To microcontroller 204.
The sampling unit 203 to the voltage and temperature real-time sampling of each photovoltaic module (photovoltaic module 101-10n), its
In, the voltage can use electric resistance partial pressure mode or differential mode to measure；Again by microcontroller 204 through the basis of communication unit 201
System needs related data such as voltage, temperature etc. being sent to gateway 300.
The switch Q1-Qn corresponds with the photovoltaic module 101-10n in the photovoltaic module string, and is connected to described
In the circuit for the series circuit that photovoltaic module string is formed.The switch according to instruction, the shut-off of executive module level with it is open-minded.Further
, the switch can be the switch element that MOSFET, IGBT or relay etc. have turn-off function.
In the present embodiment, the photovoltaic module 101 is powered as power supply photovoltaic module to the accessory power supply 202, institute
The positive and negative terminal for stating accessory power supply 202 is connected to the positive and negative terminal of the power supply photovoltaic module 101, further, the auxiliary
Power supply 202 uses circuit of reversed excitation.In the utility model, the power supply photovoltaic module 101 is situated between by taking photovoltaic module 101 as an example
Continue, though the position of power supply photovoltaic module 101 is positioned at the bottom of multiple photovoltaic modulies of series connection, it is to be understood that power supply light
The multiple photovoltaic module 101-10n optional position of series connection, any one photovoltaic module can be located at by lying prostrate the position of component 101
101-10n can serve as photovoltaic module 101 of powering, and its is specifically chosen in this not limitation.
In the present embodiment, when the switch Q1-Qn is accessed in corresponding photovoltaic module 101-10n negative terminal, i.e.,
The switch Q1 accesses are between the negative terminal of corresponding photovoltaic module 101 and the negative terminal of photovoltaic module string, the switch Q2 accesses
Between the negative terminal of corresponding photovoltaic module 102 and the anode of photovoltaic module 101, the switch Qn accesses are in corresponding photovoltaic module
Between the anode of 10n negative terminal and the photovoltaic module adjacent with photovoltaic module 10n (not shown).Except power supply photovoltaic in the present embodiment
Corresponding to component 101 outside switch Q1, rest switch Q2-Qn is light-coupled isolation driving.
During normal work, when the switch Q1-Qn is turned on, each photovoltaic module 101-10n output electricity of photovoltaic module string
Energy；When running into emergency, when the microcontroller 204 sends shut-off instruction, all to switch off, each photovoltaic module
101-10n mutually opens a way, and the voltage now exported is 0.It should be noted that switch Q1-Qn disclosed in the present embodiment
Working condition is identical, i.e., normal work when, it is all switch it is all open-minded；During emergency, all switches are turned off.
The initial and end end of the output bypass diode D1 is attempted by the positive and negative terminal of photovoltaic module string.With more than two
In the photovoltaic system of multicompartment level Quick shut-off device, when one of multicompartment level Quick shut-off device fails, photovoltaic group
The electric current of part string can form path by exporting bypass diode D1, and it is multigroup that the cutoff device so to fail does not interfere with other
The control of photovoltaic module string corresponding to part level Quick shut-off device and its normal output.
It please join shown in Fig. 2, be the schematic diagram of multicompartment level Quick shut-off device embodiment two provided by the utility model.Institute
State multicompartment level Quick shut-off device and the difference of embodiment one is：The communication unit is using radio communication 201
Mode.The present embodiment provide multicompartment level Quick shut-off device include control unit, radio communication 201, accessory power supply 202,
Switch element, sampling unit 203 and output bypass diode D1.Wherein, the switch element includes multiple switch Q1-Qn.
Described control unit includes microcontroller (MCU) 204 and drive circuit 205.The microcontroller 204 is as center
Controller, it can be communicated with the radio communication 201 and by the controlling switch unit switch Q1- of drive circuit 205
Qn shut-off with it is open-minded.The drive circuit 205 is connected respectively with the switch Q1-Qn, and according to the finger of microcontroller 204
Order, control signal is amplified, and then respectively switch Q1-Qn is switched on or off in controlling switch unit.
The radio communication 201 carries out radio communication with the wireless transmit/receive units in gateway 300 (Fig. 6), by what is received
Shut-off and provisioning instruction pass to microcontroller 204.Radio communication 201 can be carried out wirelessly using the mode such as wireless Zigbee, RF
The transmission of signal.The sampling unit 203 can carry out real-time sampling to each photovoltaic module 101-10n voltage and temperature, its
In, voltage can use electric resistance partial pressure mode or differential mode to be acquired, then by microcontroller 204 through the basis of communication unit 201
System needs related data such as voltage, temperature etc. being sent to gateway 300.
In the present embodiment, when the switch Q1-Qn is accessed in corresponding photovoltaic module 101-10n negative terminal, i.e.,
The switch Q1 accesses are between the negative terminal of corresponding photovoltaic module 101 and the negative terminal of photovoltaic module string, the switch Q2 accesses
Between the negative terminal of corresponding photovoltaic module 102 and the anode of photovoltaic module 101, the switch Qn accesses are in corresponding photovoltaic module
Between the anode of 10n negative terminal and the photovoltaic module adjacent with photovoltaic module 10n (not shown).Except power supply photovoltaic in the present embodiment
Corresponding to component 101 outside switch Q1, rest switch Q2-Qn is light-coupled isolation driving.
Refer to shown in Fig. 1 and Fig. 2, the embodiment one and the embodiment two are to use photovoltaic module 101-10n
Negative terminal shut-off mode carries out the shut-off control of photovoltaic module, and description below part will disclose the utility model with reference to Fig. 3 and Fig. 4
When being controlled using shut-off of the anode shut-off mode to photovoltaic module, it turns off the mode similarities and differences with negative terminal.
Refer to shown in Fig. 3, be the schematic diagram of multicompartment level Quick shut-off device embodiment three provided by the utility model.
The multicompartment level Quick shut-off device includes control unit, communication unit (PLC) 201, accessory power supply 202, switch element, adopted
Sample unit 203 and output bypass diode D1.
The switch element includes multiple switch Q1-Qn.Each switch Q1-Qn of the switch element is accessed corresponding
Photovoltaic module 101-10n anode, that is, Q1 accesses are switched in the anode of corresponding photovoltaic module 101 and the negative terminal of photovoltaic module 102
Between, in the anode of corresponding photovoltaic module 102 and between the negative terminal of photovoltaic module 103, switch Qn accesses exist for switch Q2 accesses
Between corresponding photovoltaic module 10n anode and the anode of photovoltaic module string, further, Q1-Qn is switched described in the present embodiment
It is light-coupled isolation driving.
During normal work, when the switch Q1-Qn is turned on, each photovoltaic module 101-10n of photovoltaic module string exports electric energy；
When running into emergency, when the microcontroller 204 sends shut-off instruction, all to switch off, each photovoltaic module 101-
10n mutually opens a way, and the voltage now exported is 0.Specifically, the on off state phase when switching Q1-Qn in identical working environment
Together, i.e., normal work when, it is all switch it is all open-minded；During emergency, all switches are turned off.
Refer to shown in Fig. 4, be the schematic diagram of multicompartment level Quick shut-off device example IV provided by the utility model,
It the difference is that only that communication unit is communicated using wireless mode with the embodiment three in Fig. 3.Specifically, it is described
Anode of each switch Q1-Qn accesses of switch element in corresponding photovoltaic module 101-10n.Q1 accesses are wherein switched corresponding
Between the anode of photovoltaic module 101 and the negative terminal of photovoltaic module 102, switch Q2 accesses corresponding photovoltaic module 102 anode and
Between the negative terminal of photovoltaic module 103, switch Qn accesses corresponding photovoltaic module 10n anode and photovoltaic module string anode it
Between, and the switch Q1-Qn is light-coupled isolation driving.
Refer to shown in Fig. 5, be double groups of multicompartment level Quick shut-off device embodiment five provided by the utility model
Part level Quick shut-off device, wherein, photovoltaic module string corresponding to double component level Quick shut-off devices includes two photovoltaic groups
Part 101,102.The switch element includes switching Q1, Q2 corresponding to two, wherein switch Q1 accesses are in photovoltaic module 101
Negative terminal and photovoltaic module string negative terminal between, negative terminal and photovoltaic module 101 of the switch Q2 access in photovoltaic module 102
Between anode, further, the switch Q2 drives for light-coupled isolation in the present embodiment.
Refer to shown in Fig. 6, be the schematic diagram of photovoltaic system provided by the utility model.The photovoltaic system includes multiple
Double component level Quick shut-off devices 200, with double 200 corresponding multiple photovoltaic module strings of component level Quick shut-off device, gateway
300th, inverter 400 and air switch 500.The input of each double component level Quick shut-off device 200 is corresponding
Photovoltaic module series winding connect, and the output end of double component level Quick shut-off devices 200 be cascaded connection inverter 400 it is defeated
Enter end.It is understood that when photovoltaic system includes only including a multicompartment level Quick shut-off device, the cutoff device
Input of the output end directly with inverter 400 is connected.
The gateway 300 is used to send instruction to double component level Quick shut-off devices 200, and double component levels rapidly switch off
The photovoltaic module string according to corresponding to turning off the instruction of microcontroller 204 of device 200.The air switch 500 is connected to inverter
Between 400 and power network 600；It is understood that the gateway 300 may alternatively be integrated within inverter 400.
With reference to Fig. 5 and Fig. 6, the course of work of photovoltaic system is further illustrated.It is described per a pair of component level when initial
Quick shut-off device 200 carries out MANET after being powered, provisioning instruction is sent after the completion of networking without output, gateway 300.Each double components
After level Quick shut-off device 200 receives provisioning instruction, opening switch Q1, Q2 respectively, photovoltaic module 101-110 is normally exported,
Inverter 400 works.Under normal circumstances, double component level Quick shut-off devices 200 will regularly be uploaded by the sampling unit 203
The information such as voltage, temperature and failure.
Under emergency, air switch 500 turns off, and gateway 300 detects that power network 600 is lost, and sends shut-off instruction immediately.
After each double component level Quick shut-off devices 200 receive shut-off instruction, switch Q1, Q2 are immediately turned off.It is empty after emergency releases
Air cock 500 closes, and gateway 300 sends provisioning instruction.After double component level Quick shut-off devices 200 receive provisioning instruction, point
Switch Q1, Q2, photovoltaic system normal work again are not opened.
Quickly closed for other multicompartment levels only by taking double component level Quick shut-off devices 200 as an example description above part
Disconnected device operation principle is identical, will not be repeated here.
In summary, the multicompartment level Quick shut-off device that the present embodiment provides, only can with a Quick shut-off device
To control multiple photovoltaic module 101-10n shut-off, it is not necessary to as each photovoltaic module of the prior art is required to correspond to one
Cutoff device, therefore, reduce cutoff device quantity, reduce the control cost of photovoltaic module string；And to a certain extent
Also reduce the energy expenditure of photovoltaic module normal work.
Above example is only to illustrate the technical solution of the utility model and unrestricted, although with reference to preferred embodiment pair
The utility model is described in detail, it will be understood by those within the art that, can be to technology of the present utility model
Scheme is modified or equivalent substitution, without departing from the spirit and scope of technical solutions of the utility model.
Claims (10)
1. a kind of multicompartment level Quick shut-off device, connected photovoltaic module string, the light are controlled in photovoltaic system
Volt component string includes at least two photovoltaic modulies being cascaded；The multicompartment level Quick shut-off device includes microcontroller
Device, communication unit, drive circuit, accessory power supply, switch element and output bypass diode；It is characterized in that：The microcontroller
Device is communicated with the communication unit and controls drive circuit, and the communication unit is used to transmit instructions to microcontroller, institute
Order-driven switch element of the drive circuit according to the microcontroller is stated, the accessory power supply is powered by the photovoltaic module；
The switch element includes at least two switches, and the switch corresponds with the photovoltaic module and is connected to corresponding photovoltaic
In the circuit of component access series circuit, the drive circuit and each switch be connected respectively with the shut-off of controlling switch and
It is open-minded.
2. multicompartment level Quick shut-off device according to claim 1, it is characterised in that：One in the photovoltaic module string
For individual photovoltaic module as power supply photovoltaic module, the positive and negative terminal of the accessory power supply connects the positive and negative terminal of power supply photovoltaic module respectively；
The switch is in the negative terminal access of corresponding photovoltaic module or in the anode access of corresponding photovoltaic module；The switch exists
During the negative terminal access of photovoltaic module, in addition to switch corresponding to power supply photovoltaic module, rest switch is light-coupled isolation driving；Switch
In the anode access of photovoltaic module, all switches are light-coupled isolation driving.
3. multicompartment level Quick shut-off device according to claim 1, it is characterised in that：The multicompartment level rapidly switches off
Device includes the sampling unit being connected with the microcontroller, and the sampling unit is used for the voltage and temperature for gathering photovoltaic module
Data simultaneously send it to microcontroller.
4. multicompartment level Quick shut-off device according to claim 1, it is characterised in that：The output bypass diode
Initial and end end is attempted by the positive and negative terminal of photovoltaic module string；The drive circuit by control signal amplify so that driving switch；It is described to open
Close as one kind in MOSFET, IGBT or relay；The accessory power supply uses circuit of reversed excitation；The communication unit is direct current
PLC or communication.
5. a kind of multicompartment level Quick shut-off device, connected photovoltaic module string, the light are controlled in photovoltaic system
Volt component string includes at least two photovoltaic modulies being cascaded；It is single that the multicompartment level Quick shut-off device includes control
Member, communication unit, accessory power supply, switch element and output bypass diode；It is characterized in that：The communication unit is used to transmit
Shut-off instruction, the accessory power supply are that control unit and communication unit are powered, and the switch element includes at least two switches, institute
Switch is stated to correspond and be connected on the series circuit of photovoltaic module string formation, described control unit with the photovoltaic module
It is connected respectively with described at least two switches, when performing shut-off instruction, described control unit control is all to switch off connection, after
And each photovoltaic module is mutually disconnected.
6. multicompartment level Quick shut-off device according to claim 5, it is characterised in that：One in the photovoltaic module string
For individual photovoltaic module as power supply photovoltaic module, the positive and negative terminal of the accessory power supply connects the positive and negative terminal of power supply photovoltaic module respectively；
The switch is in the negative terminal access of corresponding photovoltaic module or in the anode access of corresponding photovoltaic module；The switch exists
During the negative terminal access of corresponding photovoltaic module, in addition to switch corresponding to power supply photovoltaic module, rest switch is light-coupled isolation driving；
Switch in the anode access of corresponding photovoltaic module, all switches are light-coupled isolation driving.
7. multicompartment level Quick shut-off device according to claim 5, it is characterised in that：The multicompartment level rapidly switches off
Device includes the sampling unit being connected with described control unit, and described control unit includes microcontroller and drive circuit, described
Sampling unit is used for the voltage for sampling each photovoltaic module and temperature data and sends it to microcontroller.
8. multicompartment level Quick shut-off device according to claim 5, it is characterised in that：The output bypass diode
Initial and end end is attempted by the positive and negative terminal of photovoltaic module string；The switch is one kind in MOSFET, IGBT or relay；Auxiliary electricity
Source uses circuit of reversed excitation；The communication unit is direct current PLC or communication.
A kind of 9. photovoltaic system, it is characterised in that:The photovoltaic system includes at least one such as claim 1-8 any one institute
The multicompartment level Quick shut-off device and at least one photovoltaic module corresponding with the multicompartment level Quick shut-off device stated
String, gateway and inverter, input and the photovoltaic module series winding of the multicompartment level Quick shut-off device connect, described multigroup
The output end of part level Quick shut-off device is connected with the input of the inverter, and the gateway is used to quickly close to multicompartment level
Disconnected device sends instruction, multicompartment level Quick shut-off device photovoltaic module string according to corresponding to instruction shut-off.
10. photovoltaic system according to claim 9, it is characterised in that：The photovoltaic system is also described inverse including being connected to
The air switch become between device and power network, the gateway can be used as external autonomous device, can also be integrated into the inverter.
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| CN109546960A (en) * | 2017-09-22 | 2019-03-29 | 阿特斯阳光电力集团有限公司 | Multicomponent grade Quick shut-off device and photovoltaic system |
| CN109638786A (en) * | 2019-02-13 | 2019-04-16 | 海宁昱能电子有限公司 | A kind of photovoltaic module cut-off protection circuit and component switching off device |
| CN110311625A (en) * | 2019-06-14 | 2019-10-08 | 常熟市福莱德连接器科技有限公司 | A kind of controllable cut-off method connected between photovoltaic battery panel |
| CN110797907A (en) * | 2018-08-03 | 2020-02-14 | 浙江昱能科技有限公司 | Photovoltaic system with safety protection function |
| CN111224424A (en) * | 2020-01-14 | 2020-06-02 | 海宁昱能电子有限公司 | Photovoltaic module shutoff device |
| CN111293972A (en) * | 2018-12-06 | 2020-06-16 | 财团法人工业技术研究院 | Photovoltaic system |
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| CN109546960A (en) * | 2017-09-22 | 2019-03-29 | 阿特斯阳光电力集团有限公司 | Multicomponent grade Quick shut-off device and photovoltaic system |
| CN110797907A (en) * | 2018-08-03 | 2020-02-14 | 浙江昱能科技有限公司 | Photovoltaic system with safety protection function |
| CN111293972A (en) * | 2018-12-06 | 2020-06-16 | 财团法人工业技术研究院 | Photovoltaic system |
| CN109638786B (en) * | 2019-02-13 | 2020-07-31 | 海宁昱能电子有限公司 | Photovoltaic module turn-off protection circuit and module turn-off device |
| CN109638786A (en) * | 2019-02-13 | 2019-04-16 | 海宁昱能电子有限公司 | A kind of photovoltaic module cut-off protection circuit and component switching off device |
| CN110311625A (en) * | 2019-06-14 | 2019-10-08 | 常熟市福莱德连接器科技有限公司 | A kind of controllable cut-off method connected between photovoltaic battery panel |
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| WO2020248496A1 (en) * | 2019-06-14 | 2020-12-17 | 常熟市福莱德连接器科技有限公司 | Method for controllably breaking connection between photovoltaic battery panels |
| US11177770B2 (en) | 2019-06-14 | 2021-11-16 | Changshu Friends Connector Technology Co., Ltd. | Controllable system for shutting down connection between photovoltaic panels |
| CN111224424A (en) * | 2020-01-14 | 2020-06-02 | 海宁昱能电子有限公司 | Photovoltaic module shutoff device |
| WO2021142906A1 (en) * | 2020-01-14 | 2021-07-22 | 海宁昱能电子有限公司 | Photovoltaic module turn-off apparatus |
| CN113131509A (en) * | 2020-01-15 | 2021-07-16 | 昱能科技股份有限公司 | Photovoltaic inverter |
| CN113131509B (en) * | 2020-01-15 | 2022-09-13 | 昱能科技股份有限公司 | Photovoltaic inverter |
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Address after: No. 199, Lushan Road, Suzhou hi tech Zone, Suzhou City, Jiangsu Province Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: 215129 199 deer Road, Suzhou hi tech Development Zone, Jiangsu, Suzhou Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. |
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