CN103267889A - Novel intelligent photovoltaic confluence device - Google Patents
Novel intelligent photovoltaic confluence device Download PDFInfo
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- CN103267889A CN103267889A CN2013102245954A CN201310224595A CN103267889A CN 103267889 A CN103267889 A CN 103267889A CN 2013102245954 A CN2013102245954 A CN 2013102245954A CN 201310224595 A CN201310224595 A CN 201310224595A CN 103267889 A CN103267889 A CN 103267889A
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Abstract
The invention discloses a novel intelligent photovoltaic confluence device. The novel intelligent photovoltaic confluence device comprises a box body and a confluence circuit arranged in the box body, wherein the confluence circuit is used for converging a plurality of paths of photovoltaic direct current into one path; and the confluence circuit comprises a plurality of paths of anode input connectors for inputting anode direct current, a plurality of paths of cathode input connectors for inputting cathode direct current, and a detection module for detecting current size and voltage size of each path of input photovoltaic direct current. The novel intelligent photovoltaic confluence device disclosed by the invention is provided with the detection module so that single battery array voltage and battery array current can also be detected except converged total voltage and total current, and the intelligent degree is higher.
Description
Technical field
The application relates to the photovoltaic generation applied technical field, particularly relates to a kind of novel intelligent photovoltaic collector-shoe gear.
Background technology
At present, the energy scarcity problem is serious day by day, clean energy resource is the inevitable developing direction of current low-carbon environment-friendly life, sun power is as the main energy in future, growth along with the solar electrical energy generation market scale, arise at the historic moment in the large-sized photovoltaic power station, in solar photovoltaic generation system, in order to reduce the line between solar-energy photo-voltaic cell array and the inverter, simplied system structure, improve the reliability and maintainability of electricity generation system, can be with some, the output cable of the photovoltaic cell square formation that specification is identical is together in series, and forms several photovoltaic tandems, and then with several photovoltaic tandems photovoltaic header box that inserts in parallel, after in the photovoltaic header box, confluxing, with the supporting use of photovoltaic DC-to-AC converter.
The main effect of photovoltaic header box is that photovoltaic tandem and peripheral auxiliary element are monitored, at present, the photovoltaic header box mainly is divided into two kinds: a kind of is non intelligent photovoltaic header box, non intelligent photovoltaic header box can only play the function of wealthy stream in parallel, can't monitor the running status of photovoltaic header box internal module, its security, poor reliability, intelligent degree is low, can not satisfy the production needs; Another kind is intelligent photovoltaic header box, the more non intelligent type product of its intelligent degree height, and security, reliability are stronger.
But existing intelligent photovoltaic header box can only be monitored the total current after the parallel connection, can't monitor electric current, the voltage of single battery array, and defencive function is comparatively single, and intelligent degree is low.
Summary of the invention
In view of this, the application provides a kind of novel intelligent photovoltaic collector-shoe gear, with realization electric current and the voltage of single photovoltaic battery array is monitored.
To achieve these goals, the technical scheme that provides of the application is as follows:
A kind of novel intelligent photovoltaic collector-shoe gear is characterized in that, comprises casing and is arranged on the interior circuit that confluxes of casing, and the described circuit that confluxes is used for multichannel photovoltaic DC remittance stream is become one the tunnel, and the described circuit that confluxes comprises:
The anodal input interface of multichannel is used for the anodal direct current of input;
Multichannel negative pole input interface is used for input negative pole direct current;
Detection module, be connected with described anodal input interface or negative pole input interface, be used for size of current and/or the voltage swing of each road photovoltaic DC electricity of input are detected.
Preferably, described detection module also comprises:
Current detecting unit is used for measuring described photovoltaic DC electricity size of current;
Voltage detection unit is used for measuring described photovoltaic DC piezoelectric voltage size;
AD conversion unit, be connected with voltage detection unit with described current detecting unit, be used for the size of current data are become digital signal with the voltage swing data-switching;
Processing unit, be connected with described AD conversion unit, be used for determining the size of current of described photovoltaic DC electricity and voltage swing, and will determining that the result outwards sends according to described digital signal;
Display unit be used for to show the duty of the assembly of size of current data, voltage swing data and/or described novel intelligent photovoltaic collector-shoe gear.
Preferably, described detection module also comprises:
Input block is used for to described detection module input of control commands;
Alarm unit is used for when described photovoltaic DC electricity exceeds preset range and/or other assemblies send warning message when breaking down;
Control module is connected, is used for the described input block of control, alarm unit starts or close with described processing unit.
Preferably, the described circuit that confluxes comprises that also described supply module comprises for the supply module to described detection module power supply:
The step-down transforming circuit is used for supply voltage is reduced;
Single phase bridge type rectifier circu is used for the current commutates after the step-down;
Filtering circuit is used for reducing electric current higher hamonic wave and voltage higher hamonic wave;
Buck circuit is used for keeping output voltage stabilization.
Preferably, the described circuit that confluxes also comprises:
Positive bus, be used for the described anodal direct current of multichannel conflux Cheng Yilu, be connected by the described anodal input interface of described detection module and multichannel;
Negative bus-bar, be used for the described negative pole direct current of multichannel conflux into one the tunnel, be connected with the described negative pole input interface of multichannel;
Lightning protection device, be connected with described detection module, positive bus, negative bus-bar, supply module, be used for preventing thunderbolt;
Isolating switch, be connected with described positive bus, negative bus-bar, detection module, be used for short-circuit protection and overload protection.
Preferably, the described circuit that confluxes also comprises: fuse is connected with the described anodal input interface in each road, described detection module respectively.
Preferably, the described circuit that confluxes also comprises: fuse is connected with the described negative pole input interface in each road, described negative bus-bar respectively.
Preferably, the described circuit that confluxes also comprises:
Interface module, be connected with described detection module, be used for being connected described detection module and computer.
Preferably, described interface module is specially: the RS485 module.
Preferably, described supply module also is provided with guard shield outward.
As can be seen from the above technical solutions, compared with prior art, the novel intelligent photovoltaic collector-shoe gear that the application provides is provided with detection module, detection module is connected with the anodal input interface of multichannel or multichannel negative pole input interface, can voltage swing and/or the size of current that be input to each the road photovoltaic DC electricity in the novel intelligent photovoltaic collector-shoe gear be detected, intelligent degree is higher.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The synoptic diagram of a kind of novel intelligent photovoltaic collector-shoe gear that Fig. 1 provides for the embodiment of the present application;
The synoptic diagram of the detection module that Fig. 2 provides for the embodiment of the present application;
The synoptic diagram of the another kind of novel intelligent photovoltaic collector-shoe gear that Fig. 3 provides for the embodiment of the present application;
The synoptic diagram of the supply module that Fig. 4 provides for the embodiment of the present application;
The synoptic diagram of another novel intelligent photovoltaic collector-shoe gear that Fig. 5 provides for the embodiment of the present application;
The synoptic diagram of another novel intelligent photovoltaic collector-shoe gear that Fig. 6 provides for the embodiment of the present application;
The synoptic diagram of another intelligent photovoltaic collector-shoe gear that Fig. 7 provides for the embodiment of the present application.
Embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
The embodiment of the present application provides a kind of novel intelligent photovoltaic collector-shoe gear, and Fig. 1 is the synoptic diagram of a kind of novel intelligent photovoltaic collector-shoe gear that provides of the embodiment of the present application.
As shown in Figure 1, the novel intelligent photovoltaic collector-shoe gear that the embodiment of the present application provides comprises: anodal input interface 1, negative pole input interface 2, detection module 3, the photovoltaic DC electricity that the novel intelligent photovoltaic collector-shoe gear that the embodiment of the present application provides is used for a plurality of photovoltaic battery arrays are obtained confluxes, and size of current and the voltage swing of the photovoltaic DC electricity of single photovoltaic battery array detected.
Each road interface in the anodal input interface 1 of multichannel can link to each other with the positive pole of a photovoltaic battery array, each road interface in the multichannel negative pole input interface 2 can link to each other with the negative pole of a photovoltaic battery array, the photovoltaic DC electricity that photovoltaic battery array is produced is input in the novel intelligent photovoltaic collector-shoe gear, detection module 3 can be connected with the anodal input interface 1 of multichannel, equally also can be connected with multichannel negative pole input interface 2, do not do restriction in the embodiment of the present application, for sake of convenience, in the embodiment of the present application the anodal input interface 1 of detection module 3 and multichannel is connected, can remove the total current of confluxing, outside total voltage detects, can also size of current and/or the voltage swing of the photovoltaic DC electricity that is input to each road in the novel intelligent photovoltaic collector-shoe gear be detected.
Fig. 2 is the synoptic diagram of the detection module that provides of the embodiment of the present application, as shown in Figure 3, detection module 3 can comprise the current detecting unit 301 for detection of current data, detect the voltage detection unit 302 of voltage data, be used for current data and voltage data are converted into the AD conversion unit 303 of digital signal, the processing unit 304 that the digital signal that is converted to is handled, current detecting unit 301 can detect the electric current on each road in the multichannel array, also can detect the total current that obtains of confluxing by novel intelligent photovoltaic collector-shoe gear, voltage detection unit 301 can detect the voltage on each road in the multichannel array, also can detect the total voltage that obtains of confluxing by novel intelligent photovoltaic collector-shoe gear, the current data that AD conversion unit 303 can obtain current detecting unit 301 detections and voltage detection unit 302 detect the voltage data that obtains and are converted to digital signal, 304 pairs of digital signals that are converted to of processing unit are handled, display unit 305 can also be set in detection module 3, result is shown in display unit 305.
In order can novel intelligent photovoltaic collector-shoe gear to be better controlled, in another embodiment of the application, input block 306 can also be set in detection module 3, can make things convenient for the user that control information is input in the novel intelligent photovoltaic collector-shoe gear, realization is to the control of novel intelligent photovoltaic collector-shoe gear, input block 306 can be button, control command can be input in the detection module 3 by button.
For can in time be found when unusual appears in the duty that makes each assembly in the novel intelligent photovoltaic collector-shoe gear, in another embodiment of the application, alarm unit 307 can also be set in detection module 3, when certain or some assemblies in the novel intelligent photovoltaic collector-shoe gear break down, the electric current that perhaps is input in the novel intelligent photovoltaic collector-shoe gear occurs unusual, as overvoltage or under-voltage, alarm unit 307 can send warning by display unit 305 demonstrations or by alarm sound with failure message and abnormal information, in addition, the unlatching of 308 pairs of input blocks 306 of control module and alarm unit 307 or close and control can also be set.
Fig. 3 is the synoptic diagram of the another kind of novel intelligent photovoltaic collector-shoe gear that provides of the embodiment of the present application, Fig. 4 is the synoptic diagram of the supply module that provides of the embodiment of the present application, as shown in Figure 3 and Figure 4, in another embodiment of the application, can also arrange to the supply module 4 of detection module power supply, supply module 4 can adopt the rectification chopper circuit, the rectification chopper circuit specifically comprises: be used for the step-down transforming circuit 401 with the high voltage reduction, be used for the single phase bridge type rectifier circu 402 with the current commutates after the step-down, the buck circuit 404 that is used for reducing the filtering circuit 403 of electric current higher hamonic wave and voltage higher hamonic wave and is used for keeping output voltage stabilization, the total current that supply module 4 can obtain confluxing is carried out conversion and is used for detection module, make novel intelligent photovoltaic collector-shoe gear realize self-powered, it will be understood by those skilled in the art that, supply module can also be connected with the feed circuit in the external world, uses for detection module after conversion.
Supply module 4 can provide detection module work required electric energy, and can be with supply module 4 and detection module 3 discrete settings, supply module 4 heatings that occur in the time of can avoiding supply module 4 and detection module 3 integrated settings influence the problem of detection module greatly, prolong the serviceable life of detection module 3 and supply module 4, adopt the supply module 4 of rectification chopper circuit can make the electric energy that is supplied to detection module stable, reduce supply module to the electromagnetic interference (EMI) of detection module 3, in addition, can also guard shield be set at supply module 4, can improve supply module 4 to water, dust, the protective capacities of daylight can satisfy the requirement of shelter that uses in outdoor mounted.
In addition, novel intelligent photovoltaic collector-shoe gear is that a plurality of photovoltaic battery array volume electric currents are confluxed, the synoptic diagram of another novel intelligent photovoltaic collector-shoe gear that Fig. 5 provides for the embodiment of the present application, as shown in Figure 5, in another embodiment of the application, positive bus 5 can also be set, behind multichannel negative pole input interface, negative bus-bar 6 is set, positive bus 5 and negative bus-bar 6 can accumulate one the tunnel with the electric current of a plurality of branch roads, the novel intelligent photovoltaic collector-shoe gear total current that obtains of confluxing is bigger, in order to make novel intelligent photovoltaic collector-shoe gear can satisfy confluxing to big electric current, be unlikely to burn owing to electric current is excessive circuit, positive bus 5 and negative bus-bar 6 can adopt the copper coin bus-bar, make the electric conductivity of bus-bar better, and can make the barrier propterty of the bigger electric current that novel intelligent photovoltaic collector-shoe gear obtains confluxing better, prevent that big electric current from burning circuit, makes the longer service life of novel intelligent photovoltaic collector-shoe gear.
Novel intelligent photovoltaic collector-shoe gear generally is installed in outdoor, the instantaneous large-current that forms causes device damage in order to prevent from being struck by lightning, the synoptic diagram of another novel intelligent photovoltaic collector-shoe gear that Fig. 6 provides for the embodiment of the present application, as shown in Figure 6, in another embodiment of the application, lightning protection device 7 can also be set, the instantaneous large-current that produces that can prevent from being struck by lightning impacts equipment, lightning protection device 7 can with detection module 3, supply module 4, positive bus 5, negative bus-bar 6 is connected, and by linking to each other with ground level ground connection connection, the instantaneous large-current that produces that prevents from being struck by lightning when being struck by lightning causes damage to equipment, also can prevent the instantaneous large-current damage equipment that other device fails form in the photovoltaic electrical network simultaneously.
In addition; for the barrier propterty to abnormal current that makes novel intelligent photovoltaic collector-shoe gear better; the synoptic diagram of another novel intelligent photovoltaic collector-shoe gear that Fig. 7 provides for the embodiment of the present application; as shown in Figure 7; in another embodiment of the application; can also fuse 8 be set at the anodal input interface 1 of multichannel and multichannel negative pole input interface 2; fuse directly is connected with multichannel negative pole input interface 2 with the anodal input interface 1 of multichannel; can be when the abnormal current that the novel intelligent photovoltaic collector-shoe gear of appearance can not bear; realization is to the fuse protection of novel intelligent photovoltaic collector-shoe gear; can also isolating switch 9 be set at the output terminal of novel intelligent photovoltaic collector-shoe gear; isolating switch 9 and described positive bus 5; negative bus-bar 6; detection module 3 is connected; the folding condition that on detection module 3, can show isolating switch; the total current that obtains of will confluxing is exported through isolating switch 9 backs, realizes the circuit in the novel intelligent photovoltaic collector-shoe gear is carried out short-circuit protection and overload protection.
In addition, in order to realize remote monitoring and the Long-distance Control to novel intelligent photovoltaic collector-shoe gear, can also in novel intelligent photovoltaic collector-shoe gear, interface module 10 be set, interface module 10 can be the RS485 module, interface module 10 is connected with detection module 3, detection module 3 can be connected with computer, as being connected with computer by USB interface, can be with the detection information in the novel intelligent photovoltaic collector-shoe gear, as voltage data, current data, the duty of each assembly, send in the computer, realization is to the remote monitoring of novel intelligent photovoltaic collector-shoe gear, and can send instruction to novel intelligent photovoltaic collector-shoe gear by computer, realization is to the Long-distance Control of novel intelligent photovoltaic collector-shoe gear, can realize simultaneously making the control of photovoltaic plant convenient more in real time to the remote monitoring of a plurality of novel intelligent photovoltaic collector-shoe gears, further facilitate the duty that the technician understands novel intelligent photovoltaic collector-shoe gear.
In the above-described embodiments, a photovoltaic collector-shoe gear can conflux the electric current of a plurality of arrays, for example can be 12 the tunnel, the 14 road or 16 the tunnel, does not limit in the embodiment of the present application.
As can be seen from the above technical solutions, compared with prior art, the novel intelligent photovoltaic collector-shoe gear that the application provides is provided with detection module, detection module is connected with the anodal input interface of multichannel or multichannel negative pole input interface, can voltage swing and/or the size of current that be input to each the road photovoltaic DC electricity in the novel intelligent photovoltaic collector-shoe gear be detected, intelligent degree is higher.
Need to prove, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Need to prove, the above only is a part of preferred embodiment of present techniques scheme, make those skilled in the art can fully understand or realize the application, rather than whole embodiment, defined General Principle can realize under the situation of the spirit or scope that do not break away from the application in other embodiments herein.Therefore; based on above embodiment; for those skilled in the art; do not break away from the application's principle, do not making under the creative work prerequisite, can also make multiple apparent modification and retouching; the every other embodiment that obtains by these modifications and retouching; can be applied to the present techniques scheme, these do not influence the application's realization, all should belong to the application's protection domain.Therefore, the application will can not be restricted to these embodiment shown in this article, but will accord with principle disclosed herein and features of novelty the wideest consistent scope.
More than the application is described in detail, but using specific case herein sets forth the application's principle and embodiment, the explanation of above embodiment just is used for helping to understand the application's method and core concept thereof, simultaneously, for one of ordinary skill in the art, according to the application's thought, part in specific embodiments and applications all can change, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. a novel intelligent photovoltaic collector-shoe gear is characterized in that, comprises casing and is arranged on the interior circuit that confluxes of casing, and the described circuit that confluxes is used for multichannel photovoltaic DC remittance stream is become one the tunnel, and the described circuit that confluxes comprises:
The anodal input interface of multichannel is used for the anodal direct current of input;
Multichannel negative pole input interface is used for input negative pole direct current;
Detection module, be connected with described anodal input interface or negative pole input interface, be used for size of current and/or the voltage swing of each road photovoltaic DC electricity of input are detected.
2. novel intelligent photovoltaic collector-shoe gear according to claim 1 is characterized in that described detection module also comprises:
Current detecting unit is used for measuring described photovoltaic DC electricity size of current;
Voltage detection unit is used for measuring described photovoltaic DC piezoelectric voltage size;
AD conversion unit, be connected with voltage detection unit with described current detecting unit, be used for the size of current data are become digital signal with the voltage swing data-switching;
Processing unit, be connected with described AD conversion unit, be used for determining the size of current of described photovoltaic DC electricity and voltage swing, and will determining that the result outwards sends according to described digital signal;
Display unit be used for to show the duty of the assembly of size of current data, voltage swing data and/or described novel intelligent photovoltaic collector-shoe gear.
3. novel intelligent photovoltaic collector-shoe gear according to claim 1 is characterized in that described detection module also comprises:
Input block is used for to described detection module input of control commands;
Alarm unit is used for when described photovoltaic DC electricity exceeds preset range and/or other assemblies send warning message when breaking down;
Control module is connected, is used for the described input block of control, alarm unit starts or close with described processing unit.
4. novel intelligent photovoltaic collector-shoe gear according to claim 1 is characterized in that, the described circuit that confluxes comprises that also described supply module comprises for the supply module to described detection module power supply:
The step-down transforming circuit is used for supply voltage is reduced;
Single phase bridge type rectifier circu is used for the current commutates after the step-down;
Filtering circuit is used for reducing electric current higher hamonic wave and voltage higher hamonic wave;
Buck circuit is used for keeping output voltage stabilization.
5. novel intelligent photovoltaic collector-shoe gear according to claim 4 is characterized in that the described circuit that confluxes also comprises:
Positive bus, be used for the described anodal direct current of multichannel conflux Cheng Yilu, be connected by the described anodal input interface of described detection module and multichannel;
Negative bus-bar, be used for the described negative pole direct current of multichannel conflux into one the tunnel, be connected with the described negative pole input interface of multichannel;
Lightning protection device, be connected with described detection module, positive bus, negative bus-bar, supply module, be used for preventing thunderbolt;
Isolating switch, be connected with described positive bus, negative bus-bar, detection module, be used for short-circuit protection and overload protection.
6. novel intelligent photovoltaic collector-shoe gear according to claim 1, it is characterized in that the described circuit that confluxes also comprises: fuse is connected with the described anodal input interface in each road, described detection module respectively.
7. novel intelligent photovoltaic collector-shoe gear according to claim 5, it is characterized in that the described circuit that confluxes also comprises: fuse is connected with the described negative pole input interface in each road, described negative bus-bar respectively.
8. novel intelligent photovoltaic collector-shoe gear according to claim 1 is characterized in that the described circuit that confluxes also comprises:
Interface module, be connected with described detection module, be used for being connected described detection module and computer.
9. novel intelligent photovoltaic collector-shoe gear according to claim 8 is characterized in that described interface module is specially: the RS485 module.
10. novel intelligent photovoltaic collector-shoe gear according to claim 4 is characterized in that described supply module also is provided with guard shield outward.
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| WO2015176577A1 (en) * | 2014-05-20 | 2015-11-26 | 北京人民电器厂有限公司 | Miniature photovoltaic combiner box |
| CN104660166A (en) * | 2015-02-12 | 2015-05-27 | 苏州快可光伏电子股份有限公司 | Photovoltaic intelligent combiner box based on string MPPT power optimization and string monitoring |
| CN105634401A (en) * | 2015-08-30 | 2016-06-01 | 苏州快可光伏电子股份有限公司 | Integrated photovoltaic power station combiner box control module |
| CN105577113A (en) * | 2016-03-16 | 2016-05-11 | 安徽灿邦电气有限公司 | Convergence box with overload protection |
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| CN106656021B (en) * | 2016-11-28 | 2018-10-12 | 广东兆能新能源有限公司 | A kind of anti-PID header boxs system and its implementation |
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