CN205584126U - Solar PV modules is with safe terminal box and power plant system of breaking off - Google Patents
Solar PV modules is with safe terminal box and power plant system of breaking off Download PDFInfo
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- CN205584126U CN205584126U CN201620401323.6U CN201620401323U CN205584126U CN 205584126 U CN205584126 U CN 205584126U CN 201620401323 U CN201620401323 U CN 201620401323U CN 205584126 U CN205584126 U CN 205584126U
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- rosette
- busbar
- cable
- control signal
- electrical switch
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses a solar PV modules is with safe terminal box and power plant system of breaking off, the terminal box includes the box body, is equipped with printed circuit board in the box body, and the last printing of printed circuit board has a N busbar link and two electric cable connect ends, and every busbar link passes through the busbar and links to each other with the solar array cluster, still links to each other with the diode between each adjacent busbar link, it has electronic switch wherein to establish ties between first busbar link and the first electric cable connect end, and electronic switch controls its break -make by the control signal who receives, N busbar link links to each other with second electricity cable connect end, two electric cable connect ends are connected with the external world respectively through the cable conductor. Power plant system controls the terminal box through control signal. The utility model discloses can drop the power plant system internal voltage to security range artificially or automatically at the time of emergency to be favorable to in time developing scene disposal.
Description
Technical field
This utility model belongs to solar photovoltaic technology field, particularly relates to a kind of solar photovoltaic assembly with safely disconnecting rosette, and uses the solar photovoltaic power plant system of this rosette.
Background technology
Solar energy power generating development in recent years is rapid, and its basic structure includes rack-mount solar battery group string, and the rosette connect by group series winding.Wherein, rosette is a kind of very important accessory, and for the electrical connection of solar photovoltaic assembly, voltage produced by solar battery group string needs after rosette is cumulative, then by inverter, unidirectional current is converted to alternating current, is then incorporated into electrical network.In prior art, the structure of rosette generally comprises box body, is provided with some conducting strips in box body, connects solar battery group string each via busbar；It is connected with diode between each adjacent conductive sheet；The conducting strip at two ends is respectively connected with the external world with cable.Multiple rosettees are connected, and are added up by the voltage that set of cells string produces.Existing rosette is not switched off function, and in the case of i.e. physical connection does not turns off, electrical connection exists the most all the time, and voltage is at a relatively high；In common design, voltage produced by single battery group string is 30V, and after 14 groups are connected, voltage can reach 420V.So when power station something unexpected happened, such as fire, earthquake, owing to system still having high voltage, rescue personnel will be hindered to rescue in time.
Summary of the invention
The purpose of this utility model is to provide a kind of solar photovoltaic assembly with safely disconnecting rosette, can disconnect electrical connection the most in time.
Another object of the present utility model is to provide a kind of solar photovoltaic power plant system employing above-mentioned rosette, so that its DC side can reduce voltage in time.
For realizing first utility model purpose, the technical solution adopted in the utility model is such that a kind of solar photovoltaic assembly with safely disconnecting rosette, including box body, it is characterized in that: in box body, be provided with printed substrate, it is printed with N number of busbar on printed substrate and connects end and two cables connection ends, each busbar is connected end and is connected with solar battery group string by busbar, and each adjacent busbar connects and is also connected with diode between end；Wherein the first busbar connects end and the first cable and connects and be in series with electrical switch between end, electrical switch by the control signal received to control its break-make；N busbar connects end and the second cable connects end and is connected；Two cables are connected end and are connected with the external world respectively by cable.
The logic of described electrical switch is: the switch OFF when no signal, switch conduction when having signal.
Further, two cables connect bridging between end bypass diode.
Busbar connection end, diode, cable connection end, bypass diode, electrical switch collectively form the main circuit of rosette, also being in series with amplifier circuit between corresponding busbar connection end and cable connection end, the outfan of amplifier circuit is connected with electrical switch.
Busbar connection end, diode, cable connection end, bypass diode, electrical switch collectively form the main circuit of rosette, and two cables connect also bridging between ends has amplifier circuit, the outfan of amplifier circuit to be connected with electrical switch.
It is that the first busbar connects end that the busbar of negative pole connects end, and it is that the first cable connects end that the cable of negative pole connects end.
For realizing second utility model purpose, be employed technical scheme comprise that such: solar photovoltaic power plant system, including some solar battery group strings, it it is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, it is characterised in that: at least part of in described rosette safely disconnect rosette for aforesaid；Electric power station system has a control signal generator, controls to safely disconnect the break-make of electrical switch in rosette by control signal.
Further, control signal generator accesses loop in series or in parallel, and produced control signal is transmitted to each rosette by cable；Or, control signal generator produces wireless signal, sends to each rosette.
From above to safely disconnecting the description of rosette it can be seen that the first busbar connects end and the first cable connects end and has corresponding relation, become one group；N busbar connects end and the second cable connects end and has corresponding relation, becomes one group.In general they lay respectively at the both sides of printed substrate, become negative or positive electrode.When amplifier circuit connected in series enters main circuit, having two kinds of possible modes, one is that the first busbar connects end and the first cable connects an electrical switch of connecting between end, and N busbar connects end and the second cable connects amplifier circuit of connecting between end；Another kind is that the first busbar connects end and the first cable connects connect between end an electrical switch, and amplifier circuit, and N busbar connects end and the second cable connects end and is joined directly together.
The effect of amplifier circuit is acquisition controlling signal, and this control signal can be present in the carrier signal in loop, it is also possible to is wireless signal, is transferred to electrical switch after then being amplified.
Electrical switch has two kinds of alternative logics, is i.e. defaulted as on-off.As being defaulted as leading to, then switch conduction during no signal, switch OFF when having signal；As being defaulted as breaking, then switch OFF during no signal, switch conduction when having signal.This utility model is preferably defaulted as the scheme broken, because when something unexpected happened, control signal may be lost automatically because of fortuitous event, and rosette will automatically shut down, and is so more beneficial for realizing the utility model purpose of " timely power-off under the state of emergency ".
Electrical switch in this utility model, needs extra power supply circuits, and connects between end and cable connection end by electronic switching device at the busbar of negative pole, a ground connection can be shared with rosette itself, relative to device on positive pole, optimize design, provide cost savings.Cable connects the bypass diode set between end and has very important effect, in an initial condition, owing to electrical switch default conditions are for turning off, loop can not be formed between each rosette, control signal cannot arrive each rosette thus start whole system, therefore, arranging of bypass diode makes system to start the most smoothly；When some rosette or its set of cells string connected break down when can not work, it is also desirable to bypass diode conducting forms loop so that other rosettees and the set of cells string of series connection can normally work.
Electric power station system of the present utility model, controls rosette by control signal, and owing to a control signal controls multiple rosette simultaneously, therefore when signal occurs reversion, multiple rosettees all can disconnect, thus disconnects the series connection between solar battery group string.As each rosette is designed with electrical switch, then after switching off, present in electric power station system, voltage is voltage produced by monocell group string, by aforementioned citing, about 30V；As in each two rosette, one sets electrical switch, then after switching off, present in electric power station system, voltage is voltage produced by two set of cells strings, by aforementioned citing, about 60V；The rest may be inferred.
Control signal can control electrical switch in a wired or wireless manner, and wireless mode has the multiple types such as WIFI, radio frequency, bluetooth available；Wired mode may utilize original cable, sends with the form of carrier signal, and control signal generator can be connected with rosette, it is also possible in parallel.
It can be seen from the foregoing description that the technical solution of the utility model, manually or automatically voltage in electric power station system can be down to safety range, thus is conducive to carrying out site disposal in time at the time of emergency.
Accompanying drawing explanation
It is described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model
Fig. 1 is the system block diagram of electric power station system；
Fig. 2 is the circuit diagram of rosette；
Fig. 3 is the main circuit diagram A1 of rosette；
Fig. 4 is the amplifier circuit diagram A2 of rosette；
Fig. 5 is the driving output circuit A3 of rosette；
Fig. 6 is the power supply circuits A4 of rosette；
Fig. 7 is the circuit diagram of electric power station system；
Fig. 8 is the artificial circuit figure of control signal generator；
Fig. 9 is the PCB figure of rosette.
Figure is labeled as: busbar connects end 1, diode 2, negative electricity cable connection end 31, positive electrical cable connection end 32, electrical switch 4, bypass diode 5；U be operational amplifier, R be resistance, C be electric capacity, D be diode, Q2 be audion, VR be potentiometer, Trans be ribbon core transformator.
Wherein, D1, D2, D3, D4, D5, the D6 in Fig. 2 is connection end, and the two ends of identical label are connected；
S1, S2, S3, S4, S5 in Fig. 3 ~ 7 is connection end, and the two ends of identical label are connected；
P1, P2, P3, P4, P5, P6 in Fig. 8 is connection end, and the two ends of identical label are connected.
Detailed description of the invention
See accompanying drawing.Rosette is safely disconnected described in the present embodiment, including box body, being provided with printed substrate in box body, printed substrate is printed with N number of busbar and connects end 1 and cable connection end, cable connects end and is divided into negative electricity cable connection end 31 and positive electrical cable connection end 32；Each busbar is connected end 1 and is connected with solar battery group string by busbar, and each adjacent busbar connects and is also connected with diode 2 between end 1；Wherein the first busbar connects and is in series with electrical switch 4 between end and negative electricity cable connection end 31, electrical switch 4 by the control signal received to control its break-make；N busbar connects end and is connected with positive electrical cable connection end 32；Two cables are connected end and are connected with the external world respectively by cable.Two cables connect bridging between end bypass diode 5；Busbar connection end 1, diode 2, cable connection end, bypass diode 5, electrical switch 4 collectively form the main circuit of rosette, corresponding busbar connects also connects at S1, the S2 between end and cable connection end or has bridged amplifier circuit, and the outfan of amplifier circuit is connected with electrical switch 4.
Solar power plant system described in the present embodiment, including some solar battery group strings, it is one group by rosette series connection, after produced voltage accumulation, by inverter unidirectional current is converted to alternating current, at least part of in described rosette safely disconnect rosette for described；Electric power station system has a control signal generator, controls to safely disconnect the break-make of electrical switch in rosette by control signal.Control signal generator can access loop by serial or parallel connection mode, produced control signal can be by the way of wired, i.e. cable transmits to each rosette, can also be wirelessly, i.e. WIFI, radio frequency, bluetooth etc., produce wireless signal, send to respectively safely disconnecting rosette.
During the present embodiment work, the control signal sent by control signal generator controls to safely disconnect rosette, starting stage, many Battery packs sheet and rosette normal power supply；When there are special circumstances, control signal generator sends reverse signal, and the electrical switch of junction box disconnects；Owing to a control signal controls multiple to safely disconnect rosette simultaneously, therefore control signal generator sends reverse signal, the electrical switch of multiple junction box all can disconnect, thus disconnect the series connection between solar battery sheet, voltage present in electric power station system is made to be voltage produced by single Battery pack sheet, voltage in electric power station system is down to safety range, thus is conducive to carrying out site disposal in time.
Claims (9)
1. solar photovoltaic assembly is with safely disconnecting rosette, including box body, it is characterized in that: in box body, be provided with printed substrate, it is printed with N number of busbar on printed substrate and connects end and two cables connection ends, each busbar is connected end and is connected with solar battery group string by busbar, and each adjacent busbar connects and is also connected with diode between end；Wherein the first busbar connects end and the first cable and connects and be in series with electrical switch between end, electrical switch by the control signal received to control its break-make；N busbar connects end and the second cable connects end and is connected；Two cables are connected end and are connected with the external world respectively by cable.
2. solar photovoltaic assembly as claimed in claim 1 is with safely disconnecting rosette, it is characterised in that: the logic of described electrical switch is: the switch OFF when no signal, switch conduction when having signal.
3. solar photovoltaic assembly as claimed in claim 2 is with safely disconnecting rosette, it is characterised in that: two cables connect bridging between end bypass diode.
4. solar photovoltaic assembly as claimed in claim 3 is with safely disconnecting rosette, it is characterized in that: busbar connection end, diode, cable connection end, bypass diode, electrical switch collectively form the main circuit of rosette, also being in series with amplifier circuit between corresponding busbar connection end and cable connection end, the outfan of amplifier circuit is connected with electrical switch.
5. solar photovoltaic assembly as claimed in claim 3 is with safely disconnecting rosette, it is characterized in that: busbar connection end, diode, cable connection end, bypass diode, electrical switch collectively form the main circuit of rosette, two cables connect also bridging between end has amplifier circuit, the outfan of amplifier circuit to be connected with electrical switch.
6. the solar photovoltaic assembly as described in any one of claim 1-5 is with safely disconnecting rosette, it is characterised in that: it is that the first busbar connects end that the busbar of negative pole connects end, and it is that the first cable connects end that the cable of negative pole connects end.
7. solar photovoltaic power plant system, including some solar battery group strings, it it is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, it is characterised in that: at least part of for safely disconnecting rosette described in any one of claim 1-6 in described rosette；Electric power station system has a control signal generator, controls to safely disconnect the break-make of electrical switch in rosette by control signal.
8. solar photovoltaic power plant system as claimed in claim 7, it is characterised in that: control signal generator accesses loop in series or in parallel, and produced control signal is transmitted to each rosette by cable.
9. solar photovoltaic power plant system as claimed in claim 7, it is characterised in that: control signal generator produces wireless signal, sends to each rosette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401323.6U CN205584126U (en) | 2016-05-03 | 2016-05-03 | Solar PV modules is with safe terminal box and power plant system of breaking off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401323.6U CN205584126U (en) | 2016-05-03 | 2016-05-03 | Solar PV modules is with safe terminal box and power plant system of breaking off |
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| Publication Number | Publication Date |
|---|---|
| CN205584126U true CN205584126U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620401323.6U Active CN205584126U (en) | 2016-05-03 | 2016-05-03 | Solar PV modules is with safe terminal box and power plant system of breaking off |
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| CN (1) | CN205584126U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720913A (en) * | 2016-05-03 | 2016-06-29 | 闪耀魅力有限公司 | Safety cut-off junction box used for solar photovoltaic modules and power station system |
| JP2019193550A (en) * | 2018-04-28 | 2019-10-31 | ベイジン・ハナジー・ソーラー・パワー・インベストメント・カンパニー・リミテッド | Solar module junction box, solar system and control method for solar module |
-
2016
- 2016-05-03 CN CN201620401323.6U patent/CN205584126U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720913A (en) * | 2016-05-03 | 2016-06-29 | 闪耀魅力有限公司 | Safety cut-off junction box used for solar photovoltaic modules and power station system |
| JP2019193550A (en) * | 2018-04-28 | 2019-10-31 | ベイジン・ハナジー・ソーラー・パワー・インベストメント・カンパニー・リミテッド | Solar module junction box, solar system and control method for solar module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |