CN204244170U - Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux - Google Patents
Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux Download PDFInfo
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- CN204244170U CN204244170U CN201420789699.XU CN201420789699U CN204244170U CN 204244170 U CN204244170 U CN 204244170U CN 201420789699 U CN201420789699 U CN 201420789699U CN 204244170 U CN204244170 U CN 204244170U
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- circuit
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- counnter attack
- control module
- conflux
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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 provides a kind of photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux, and described photovoltaic combiner box comprises casing, conflux circuit and the main control module be arranged in casing.The described circuit that confluxes comprises positive pole loop and the negative loop corresponding with positive pole loop.Described positive pole loop or described negative loop are provided with counnter attack unit, when there is forward current in the described circuit that confluxes, described counnter attack unit sends normal input current signal to described main control module, the switch opens of described main control module, described in conflux circuit pathways; When the negative current of the described circuit that confluxes flows through described counnter attack unit, described counnter attack unit is to described main control module conveying counnter attack unit controls signal, and the switch of described main control module cuts out, described in conflux circuit breaker.Setting like this, the conduction loss of the circuit that makes to conflux in photovoltaic combiner box reduces.
Description
Technical field
The utility model relates to a kind of technical field of photovoltaic power generation, particularly relates to a kind of photovoltaic combiner box of arranging with anti-anti-technology and the anti-circnit NOT of photovoltaic conflux thereof.
Background technology
Photovoltaic combiner box traditional at present, adopts conventional diode to carry out counnter attack, on the one hand in order to prevent current reflux between different group string, on the other hand in order to prevent photovoltaic module reversal connection.Due to the existence of the conduction voltage drop of diode itself, conduction loss and conduction voltage drop in direct ratio.Heat dissipation problem is exactly the problem being difficult in photovoltaic combiner box overcome all the time.As Figure of description Figure 1 shows that the conspectus of current conventional photovoltaic header box.
Therefore, be necessary to provide a kind of photovoltaic combiner box of improvement to solve the problem.
Utility model content
The purpose of this utility model is to provide a kind of photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux thereof that can reduce conduction loss in the circuit that confluxes.
For realizing above-mentioned utility model object, the utility model provides a kind of photovoltaic combiner box, comprise casing, conflux circuit and the main control module that confluxes in circuit described in being serially connected in be arranged in casing, the described circuit that confluxes comprises positive pole loop and the negative loop corresponding with positive pole loop, described positive pole loop or described negative loop are provided with counnter attack unit, when there is forward current in the described circuit that confluxes, described counnter attack unit sends normal input current signal to described main control module, the switch opens of described main control module, described in conflux circuit pathways; When the negative current of the described circuit that confluxes flows through described counnter attack unit, described counnter attack unit is to described main control module conveying counnter attack unit controls signal, and the switch of described main control module cuts out, described in conflux circuit breaker.
As further improvement of the utility model, described counnter attack unit is the MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) of band body diode or IGBT (the Insulated Gate Bipolar Transistor of band body diode.
As further improvement of the utility model, the described circuit that confluxes comprises some described positive pole loops parallel with one another, the one end in described positive pole loop is the electrode input end be connected with photovoltaic module tandem positive wire, the other end is cathode output end, is connected in series the MOSFET of described body diode or the IGBT of band body diode between two ends.
As further improvement of the utility model, each described positive pole loop forms the first branch road in parallel and the second branch road in branch of described counnter attack unit place, be serially connected with described band body diode in described first branch road, in described second branch road, be serially connected with described MOSFET or IGBT.
As further improvement of the utility model, described in conflux on circuit and be also serially connected with current acquisition module, after some described first branch roads accumulate current acquisition module serial connection described in a total Lu Houyu, described current acquisition module is connected in series with described cathode output end again.
As further improvement of the utility model, described current acquisition module is connected in series with described main control module, and each described second branch road is connected in series to form detection line with described main control module respectively, is connected in parallel between described detection line and described total road.
As further improvement of the utility model, described photovoltaic combiner box is also provided with power supply module, described power supply module and the described current acquisition model calling of powering for described main control unit.
The utility model also provides a kind of photovoltaic conflux anti-circnit NOT, comprise and conflux circuit and be serially connected in the main control module confluxed in circuit, the described circuit that confluxes comprises positive pole loop and the negative loop corresponding with described positive pole loop, described positive pole loop or described negative loop are provided with counnter attack unit, when there is forward current in the described circuit that confluxes, described counnter attack unit sends normal input current signal to described main control module, the switch opens of described main control module, described in conflux circuit pathways; When the negative current of the described circuit that confluxes flows through described counnter attack unit, described counnter attack unit is to described main control module conveying counnter attack unit controls signal, and the switch of described main control module cuts out, described in conflux circuit breaker.
As further improvement of the utility model, the one end in described positive pole loop is the electrode input end be connected with photovoltaic module tandem positive wire, the other end is cathode output end, be connected in series described counnter attack unit between two ends, described counnter attack unit is the MOSFET of band body diode or the IGBT of band body diode.
As further improvement of the utility model, described positive pole loop forms the first branch road and the second branch road in branch of described counnter attack unit place, described first branch road is connected in series described body diode, described second branch road is connected in series described MOSFET or described IGBT, in parallel between described first branch road with described second branch road.
The beneficial effects of the utility model are: the utility model photovoltaic combiner box is by arranging counnter attack unit confluxing on circuit, utilize counnter attack unit to send normal current signal and counnter attack unit controls signal to main control module to control to conflux the break-make of circuit, thus reduce conduction loss in the circuit that confluxes, simultaneously because heat radiation is less, reduce the heat in described photovoltaic combiner box, significantly add the high reliability of photovoltaic combiner box.
Accompanying drawing explanation
Fig. 1 is the circuit diagram in prior art in photovoltaic combiner box.
Fig. 2 is the circuit diagram in the utility model photovoltaic combiner box.
Embodiment
Below with reference to each execution mode shown in the drawings, the utility model is described in detail.But these execution modes do not limit the utility model, the structure that those of ordinary skill in the art makes according to these execution modes, method or conversion functionally are all included in protection range of the present utility model.
Please refer to shown in Fig. 2, the utility model photovoltaic combiner box 100, comprise a casing 1, conflux circuit 2 and the main control module 3 that confluxes in circuit 2 described in being serially connected in be arranged in described casing 1.Some negative loops 22 that the described circuit 2 that confluxes comprises some positive pole loops 21 and arranges with positive pole loop 21 one_to_one corresponding.The one end in each described positive pole loop 21 is the electrode input end 4 of the positive wire (not shown) of serial connection photovoltaic module tandem, and one end is the positive DC output 5 of the extraneous inverter of serial connection (not shown) in addition.One end of each described negative loop 21 is the negative input 6 of the negative wire (not shown) of serial connection photovoltaic module tandem, and one end is the negative DC output 7 connecting extraneous inverter in addition.
Shown in ginseng Fig. 2, each described positive pole loop 21 is serially connected with high voltage fuse 211, counnter attack unit 212 and current acquisition module 213 between described electrode input end 4 and described positive DC output 5.In the illustrated execution mode of the utility model, described in the circuit 2 that confluxes include four described positive pole loops 21 parallel with one another, each described positive pole loop 21 is punished at described counnter attack unit 212 and is formed the first branch road a in parallel and the second branch road b.Described counnter attack unit 212 is MOSFET (the metal-oxide layer semiconductcor field effect transistor of band body diode 2121, English: Metal-Oxide-Semiconductor Field-Effect Transistor, be called for short: MOSFET) 2122 or band body diode 2121 IGBT(insulated gate bipolar transistor, English: Insulated Gate Bipolar Transistor, be called for short: IGBT) 2122.The described body diode 2121 of serial connection in described first branch road a, serial connection described MOSFET 2122 or IGBT 2122 in described second branch road b.Four described first branch road a conflux, and Cheng Yizong road 20 is rear to be connected in series with described current acquisition module 213, and then described current acquisition module 213 is connected in series with described positive DC output 5 again; Four described second branch road b are connected in series to form four detection lines with described main control module 3 respectively, are connected in parallel to described main control module 3 between each described detection line and the described total road 20 being connected with described current acquisition module 213.When the electric current occurred in described positive pole loop 21 is forward current (not shown), described electric current carries normal current signal by the band body diode 2121 of the first branch road a to described main control module 3, described main control module 3 opens switch (not shown), the described circuit 2 that confluxes forms path, and described forward current directly exports from described positive DC output 5.When the electric current occurred in described positive pole loop 21 is negative current (not shown), described MOSFET 2122 or the IGBT 2122 of described second branch road b transmit counnter attack unit controls signal to described main control module 3, described main control module 3 closing switch, the described circuit 2 that confluxes disconnects and forms open circuit, prevents described negative current from pouring in down a chimney to described photovoltaic module tandem.
In sum, described counnter attack unit 212 is the Mosfet of band body diode or the IGBT of band body diode.Setting like this, utilize synchronous rectification reduce described in conflux the conduction loss of circuit 2, simultaneously because heat radiation is less, reduce the heat in described photovoltaic combiner box 100, significantly add the high reliability of photovoltaic combiner box 100.
In addition, the power supply module 215 be connected respectively with described current acquisition module 213 and described main control module 3 is also provided with in described positive pole loop 21.Described power supply module 215 is used for gathering electric current from described current acquisition module 213, and powers for described main control module 3.
In the illustrated execution mode of the utility model, described negative loop 22 is similarly four, forms described negative DC output 7 again and be connected in series with extraneous inverter after four described negative loops 22 are parallel with one another after converging into a circuit 23.Other one end of each described negative loop 22 is connected in series with the negative input 6 of described photovoltaic module tandem.
The high direct voltage lightning-protection module 24 be connected in series respectively with described positive pole loop 21 and described negative loop 22 is also provided with in the described circuit 2 that confluxes.
Be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each execution mode also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for feasibility execution mode of the present utility model; they are also not used to limit protection range of the present utility model, all do not depart from the utility model skill equivalent implementations of doing of spirit or change all should be included within protection range of the present utility model.
Claims (10)
1. a photovoltaic combiner box, comprise casing, conflux circuit and the main control module that confluxes in circuit described in being serially connected in be arranged in casing, the described circuit that confluxes comprises positive pole loop and the negative loop corresponding with described positive pole loop, described positive pole loop or described negative loop are provided with counnter attack unit, it is characterized in that: when there is forward current in the described circuit that confluxes, described counnter attack unit sends normal input current signal to described main control module, the switch opens of described main control module, described in conflux circuit pathways; When the negative current of the described circuit that confluxes flows through described counnter attack unit, described counnter attack unit is to described main control module conveying counnter attack unit controls signal, and the switch of described main control module cuts out, described in conflux circuit breaker.
2. photovoltaic combiner box according to claim 1, is characterized in that: described counnter attack unit is the MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) of band body diode or the IGBT (Insulated Gate Bipolar Transistor) of band body diode.
3. photovoltaic combiner box according to claim 2, it is characterized in that: described in the circuit that confluxes comprise some described positive pole loops parallel with one another, the one end in described positive pole loop is the electrode input end be connected with photovoltaic module tandem positive wire, the other end is cathode output end, is connected in series the MOSFET of described band body diode or the IGBT of band body diode between two ends.
4. photovoltaic combiner box according to claim 3, it is characterized in that: each described positive pole loop forms the first branch road in parallel and the second branch road in branch of described counnter attack unit place, be serially connected with described body diode in described first branch road, in described second branch road, be serially connected with described MOSFET or IGBT.
5. photovoltaic combiner box according to claim 4, it is characterized in that: described in conflux on circuit and be also serially connected with current acquisition module, after some described first branch roads accumulate current acquisition module serial connection described in a total Lu Houyu, described current acquisition module is connected in series with described cathode output end again.
6. photovoltaic combiner box according to claim 5, it is characterized in that: described current acquisition module is connected in series with described main control module, each described second branch road is connected in series to form detection line with described main control module respectively, is connected in parallel between described detection line and described total road.
7. photovoltaic combiner box according to claim 5, is characterized in that: described photovoltaic combiner box is also provided with power supply module, described power supply module and the described current acquisition model calling of powering for described main control unit.
8. the anti-circnit NOT of photovoltaic conflux, comprise and conflux circuit and be serially connected in the main control module confluxed in circuit, the described circuit that confluxes comprises positive pole loop and the negative loop corresponding with described positive pole loop, described positive pole loop or described negative loop are provided with counnter attack unit, it is characterized in that: when there is forward current in the described circuit that confluxes, described counnter attack unit sends normal input current signal to described main control module, the switch opens of described main control module, described in conflux circuit pathways; When the negative current of the described circuit that confluxes flows through described counnter attack unit, described counnter attack unit is to described main control module conveying counnter attack unit controls signal, and the switch of described main control module cuts out, described in conflux circuit breaker.
9. the anti-circnit NOT of photovoltaic conflux according to claim 8, it is characterized in that: the one end in described positive pole loop is the electrode input end be connected with photovoltaic module tandem positive wire, the other end is cathode output end, be connected in series described counnter attack unit between two ends, described counnter attack unit is the MOSFET of band body diode or the IGBT of band body diode.
10. the anti-circnit NOT of photovoltaic conflux according to claim 9, it is characterized in that: described positive pole loop forms the first branch road and the second branch road in branch of described counnter attack unit place, described first branch road is connected in series described body diode, described second branch road is connected in series described MOSFET or described IGBT, described first branch road and described second branch circuit parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789699.XU CN204244170U (en) | 2014-12-15 | 2014-12-15 | Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420789699.XU CN204244170U (en) | 2014-12-15 | 2014-12-15 | Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux |
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| CN204244170U true CN204244170U (en) | 2015-04-01 |
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| CN201420789699.XU Active CN204244170U (en) | 2014-12-15 | 2014-12-15 | Photovoltaic combiner box and the anti-circnit NOT of photovoltaic conflux |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305957A (en) * | 2015-11-27 | 2016-02-03 | 国网冀北电力有限公司电力科学研究院 | Energy efficiency analysis method and device of photovoltaic conflux box |
| CN113890092A (en) * | 2021-09-30 | 2022-01-04 | 嘉兴学院 | Photovoltaic power generation system |
-
2014
- 2014-12-15 CN CN201420789699.XU patent/CN204244170U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305957A (en) * | 2015-11-27 | 2016-02-03 | 国网冀北电力有限公司电力科学研究院 | Energy efficiency analysis method and device of photovoltaic conflux box |
| CN113890092A (en) * | 2021-09-30 | 2022-01-04 | 嘉兴学院 | Photovoltaic power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215300 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Co-patentee after: Changshu Canadian Solar Inc. Patentee after: Artes sunshine Power Group Co. Ltd. Address before: 215300 Suzhou high tech Zone, Jiangsu, Lu Shan Road, No. 199 Co-patentee before: Changshu Canadian Solar Inc. Patentee before: Canadian (China) Investment Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee after: Atlas sunshine Power Group Co.,Ltd. Patentee after: Changshu Artes Sunshine Power Technology Co.,Ltd. Address before: No. 199, deer mountain road, Suzhou high tech Zone, Jiangsu Province Patentee before: CSI SOLAR POWER GROUP Co.,Ltd. Patentee before: Changshu Artes Sunshine Power Technology Co.,Ltd. |