CN205584125U - Novel solar PV modules terminal box - Google Patents
Novel solar PV modules terminal box Download PDFInfo
- Publication number
- CN205584125U CN205584125U CN201620385499.7U CN201620385499U CN205584125U CN 205584125 U CN205584125 U CN 205584125U CN 201620385499 U CN201620385499 U CN 201620385499U CN 205584125 U CN205584125 U CN 205584125U
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- CN
- China
- Prior art keywords
- busbar
- cable
- connects
- electrical switch
- rosette
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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
Abstract
The utility model discloses a novel solar PV modules terminal box, including the box body, be equipped with printed circuit board in the box body, 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, still be equipped with the feed through capacitor between two electric cable connect ends. 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 energy photovoltaic assembly junction box.
Background technology
In solar energy power generating field, rosette is a kind of very important accessory, and for the electrical connection of photovoltaic module, voltage produced by solar battery group string needs after rosette is cumulative, by inverter, unidirectional current is converted to alternating current again, 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；If voltage produced by single battery group string is 30V, after 14 groups are connected, voltage then 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 energy photovoltaic assembly junction box, can power-off in time when needed.
For this, the technical solution adopted in the utility model is such that a kind of solar energy photovoltaic assembly junction box, 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；It is additionally provided with shunt capacitance between two cables connection ends.
The logic of described electrical switch is: the switch OFF when no signal, switch conduction when having signal.
Busbar connection end, diode, cable connection end, shunt capacitance, 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, shunt capacitance, electrical switch collectively form the main circuit of rosette, are also parallel with amplifier circuit between two cables connection ends, and the outfan of amplifier circuit is connected with electrical switch.
It can be seen from the foregoing description 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 can be lost, 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, can share a ground connection with rosette itself, relative to device on positive pole, provide cost savings.Cable connects the shunt capacitance 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, the design of shunt capacitance makes system to start shooting the most smoothly.Simultaneously because shunt capacitance cannot conducting direct current electricity, therefore, when some rosette or its set of cells string connected break down when can not work, the loop of whole group of solar junction box is interrupted, the power of power plant substantially reduces, so that staff can perceive and there is rosette or set of cells string breaks down, it is possible to be replaced maintenance in time, it is to avoid the waste of solar energy resources.
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 block diagram of rosette place electric power station system；
Fig. 2 is the circuit diagram of rosette；
Fig. 3 is the main circuit diagram A of rosette；
Fig. 4 is the amplifier circuit diagram B of rosette；
Fig. 5 is the driving output circuit C of rosette；
Fig. 6 is the power supply circuits D of rosette；
Fig. 7 is the artificial circuit figure of control signal generator.
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, shunt capacitance 5.
S1, S2, S3, S4, S5 in Fig. 2 ~ 6 is connection end, and the two ends of identical label are connected；
P1, P2, P3, P4, P5, P6 in Fig. 7 is connection end, and the two ends of identical label are connected.
Detailed description of the invention
Rosette described in the present embodiment, including box body, is provided with printed substrate in box body, printed substrate is printed with N number of busbar and connects end 1 and cable connection end, and 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.It is additionally provided with shunt capacitance 5 between two cables connection ends；Busbar connection end 1, diode 2, cable connection end, shunt capacitance 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, is one group by rosette series connection, by inverter, unidirectional current is converted to alternating current after produced voltage accumulation, at least part of with electrical switch 4 in described rosette；Electric power station system has a control signal generator, controls the break-make of electrical switch in rosette by control signal.Control signal generator can access loop by serial or parallel connection mode, and 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, sends to each rosette.
During the present embodiment work, the control signal sent by control signal generator controls 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 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 (5)
1. a solar energy photovoltaic assembly junction box, 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；It is additionally provided with shunt capacitance between two cables connection ends.
2. a kind of solar energy photovoltaic assembly junction box as claimed in claim 1, it is characterised in that: the logic of described electrical switch is: the switch OFF when no signal, switch conduction when having signal.
3. a kind of solar energy photovoltaic assembly junction box as claimed in claim 2, it is characterized in that: busbar connection end, diode, cable connection end, shunt capacitance, 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.
4. a kind of solar energy photovoltaic assembly junction box as claimed in claim 2, it is characterized in that: busbar connection end, diode, cable connection end, shunt capacitance, electrical switch collectively form the main circuit of rosette, also being parallel with amplifier circuit between two cables connection ends, the outfan of amplifier circuit is connected with electrical switch.
5. a kind of solar energy photovoltaic assembly junction box as described in any one of claim 1-4, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385499.7U CN205584125U (en) | 2016-05-03 | 2016-05-03 | Novel solar PV modules terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620385499.7U CN205584125U (en) | 2016-05-03 | 2016-05-03 | Novel solar PV modules terminal box |
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| Publication Number | Publication Date |
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| CN205584125U true CN205584125U (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620385499.7U Active CN205584125U (en) | 2016-05-03 | 2016-05-03 | Novel solar PV modules terminal box |
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| CN (1) | CN205584125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720912A (en) * | 2016-05-03 | 2016-06-29 | 闪耀魅力有限公司 | Novel solar photovoltaic module junction box |
| CN107843806A (en) * | 2017-10-30 | 2018-03-27 | 阳光电源股份有限公司 | A kind of Wiring detection method, device and photovoltaic generating system |
-
2016
- 2016-05-03 CN CN201620385499.7U patent/CN205584125U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720912A (en) * | 2016-05-03 | 2016-06-29 | 闪耀魅力有限公司 | Novel solar photovoltaic module junction box |
| CN107843806A (en) * | 2017-10-30 | 2018-03-27 | 阳光电源股份有限公司 | A kind of Wiring detection method, device and photovoltaic generating system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |