CN205584127U - Controllable solar PV modules terminal box - Google Patents
Controllable solar PV modules terminal box Download PDFInfo
- Publication number
- CN205584127U CN205584127U CN201620401351.8U CN201620401351U CN205584127U CN 205584127 U CN205584127 U CN 205584127U CN 201620401351 U CN201620401351 U CN 201620401351U CN 205584127 U CN205584127 U CN 205584127U
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- Prior art keywords
- busbar
- electrical switch
- cable
- connects
- diode
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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 controllable 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 bypass diode 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 controllable solar energy photovoltaic component terminal 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 controllable solar energy photovoltaic component terminal box, can power-off in time when needed.
For this, the technical solution adopted in the utility model is such that a kind of controllable solar energy photovoltaic component terminal 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 bypass diode between two cables connection ends.
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, are also parallel with amplifier circuit between two cables connection ends, and the outfan of amplifier circuit is connected with electrical switch.
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 ".
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.
First busbar connects end and the first cable connects end and has corresponding relation, becomes 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.
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 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.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, 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 (3)
1. a controllable solar energy photovoltaic component terminal 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 bypass diode between two cables connection ends.
2. a kind of controllable solar energy photovoltaic component terminal box as claimed in claim 1, 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.
3. a kind of controllable solar energy photovoltaic component terminal box as claimed in claim 1, 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 parallel with amplifier circuit between two cables connection ends, the outfan of amplifier circuit is connected with electrical switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401351.8U CN205584127U (en) | 2016-05-03 | 2016-05-03 | Controllable solar PV modules terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620401351.8U CN205584127U (en) | 2016-05-03 | 2016-05-03 | Controllable solar PV modules terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205584127U true CN205584127U (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620401351.8U Active CN205584127U (en) | 2016-05-03 | 2016-05-03 | Controllable solar PV modules terminal box |
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| Country | Link |
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| CN (1) | CN205584127U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703706A (en) * | 2016-05-03 | 2016-06-22 | 闪耀魅力有限公司 | Controllable solar photovoltaic module connection box |
-
2016
- 2016-05-03 CN CN201620401351.8U patent/CN205584127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703706A (en) * | 2016-05-03 | 2016-06-22 | 闪耀魅力有限公司 | Controllable solar photovoltaic module connection box |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |