CN203984337U - A kind of low profile photovoltaic header box - Google Patents
A kind of low profile photovoltaic header box Download PDFInfo
- Publication number
- CN203984337U CN203984337U CN201420255951.9U CN201420255951U CN203984337U CN 203984337 U CN203984337 U CN 203984337U CN 201420255951 U CN201420255951 U CN 201420255951U CN 203984337 U CN203984337 U CN 203984337U
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- module
- current
- protective device
- controller
- current detection
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- 238000001514 detection method Methods 0.000 claims abstract description 38
- 230000001681 protective Effects 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 238000004891 communication Methods 0.000 claims abstract description 13
- 230000001012 protector Effects 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000875 corresponding Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
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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 is a kind of photovoltaic combiner box; described photovoltaic combiner box arranges many group protective devices, at least one multiloop electric current detection module, at least one lightning protector module, at least one direct-current isolating switch or direct current mold cased circuit breaker, at least one power module, at least one controller module, earth terminal and communication terminal in the casing of closed; described every group of protective device and current detection module adopt inserting mode, screw fastening.The setting that superposes up and down of described power module and controller module, power module is positioned at controller module lower floor, and both adopt connector to connect, and form power supply/controller composite module.Described power supply/controller composite module is arranged at protective device and current detection module top.The utility model is multiple functional; Modularized design; Maintainability is good, and maintenance cost is low, and it is more convenient to keep in repair; Controller module and power module combination layout, box volume is little, and cost is low, and installing space is also smaller.
Description
Technical field
This technology relates to the photovoltaic combiner box in a kind of photovoltaic generating system, belongs to field of photovoltaic power generation.
Background technology
Solar photovoltaic generation system is generally made up of photovoltaic array, direct current conflux case, inverter.In order to reduce the line between solar-energy photo-voltaic cell array and inverter, simplied system structure, improve the reliability and maintainability of electricity generation system, the output cable of some, photovoltaic battery matrix that specification is identical can be together in series, form several photovoltaic arrays, and then several photovoltaic arrays are connected in to photovoltaic combiner box, after confluxing in photovoltaic combiner box, be connected with photovoltaic DC-to-AC converter, form photovoltaic generating system.In current photovoltaic generating system, photovoltaic combiner box plays the effect of forming a connecting link, and is the tie that connects photovoltaic array and inverter, and the operation conditions of photovoltaic combiner box directly affects whole photovoltaic generating system, so photovoltaic combiner box is of crucial importance.
Conventional photovoltaic combiner box mainly comprises in the market: casing, mounting panel, protective device, current sensing means, lightning protection device, direct-current isolating switch or direct current mold cased circuit breaker, control module, power module, communication terminal and earth terminal.In above photovoltaic combiner box, the arrangement of main element can be divided into two kinds at present: (1) protective device adopts DC fuse, be positioned in the plug socket on circuit board, general 4 roads or 8 tunnels are a unit module, each unit module is realized and being installed by an independent circuit board, combine according to the specific requirement of system applies, can realize the designing requirement of 8 tunnels, 12 Huo16 road, road header boxs; Secondly connect current sensing means, generally fuse and current sensing means are arranged on same circuit board.(2) protective device is fuse, and fuse is anodal and negative pole left and right two rows are arranged apart, and fuse is anodal to be connected and to be confluxed by flexible cord with current sensing means, and negative pole connects the load end of direct-current isolating switch or direct current mold cased circuit breaker.Subject matter and the shortcoming of above two kinds of prior art schemes are as follows:
1, between fuse and current detection module, be fixedly connected by welding, be arranged on same circuit board, as certain component wear wherein, need all change, it is maintainable poor to cause, and maintenance cost is high;
2, in order to meet safety creepage distance requirement, it is arranged apart that fuse is generally left and right two row's both positive and negative polarities, and enough large safe distance is left in centre, causes header box space availability ratio low; Meanwhile, because fuse both positive and negative polarity is arranged apart, cannot be grounded insulation and detect;
3, controller module and power module split are arranged, further cause box sizes to strengthen, and high tension loop simultaneously exposes, and unshielded, coefficient of safety is low.
Summary of the invention
The purpose of this utility model is to provide a kind of miniaturization photovoltaic combiner box, can dwindle more than 40% with respect to conventional Intelligent photovoltaic header box box volume.Be convenient to safeguard simultaneously, cost is low, can be grounded insulation and detecting.
The technical solution adopted in the utility model is:
A kind of low profile photovoltaic header box, inside arranges many group photovoltaic cell string protective devices, at least one current measurement module, at least one lightning protector module, at least one direct-current isolating switch or direct current mold cased circuit breaker, at least one power module, at least one controller module, earth terminal and communication terminal.
Described photovoltaic cell string protective device and current measurement module are placed on a side of photovoltaic combiner box; Described direct-current isolating switch or direct current mold cased circuit breaker are placed on the opposite side of photovoltaic combiner box;
When described photovoltaic cell string protective device is small-sized DC circuit breaker, can two rows correspondence arrange, current detection module is between upper and lower two groups of protective devices, and every group of protective device is connected with the manner that current detection module employing is pegged graft or screw is fixing; When described protective device is DC fuse, can both positive and negative polarity stack arrange, current detection module is positioned at the upside of protective device, and protective device adopts manner to be connected with current detection module;
The setting that superposes up and down of described power module and controller module, power module is positioned at controller module lower floor, and both adopt connector to connect, and form power supply/controller composite module;
Described power supply/controller composite module is arranged at protective device and current detection module top;
Described direct-current isolating switch or direct current mold cased circuit breaker are arranged at the right side of protective device and current detection module;
In the time that described protective device is fuse, can in photovoltaic combiner box, increase leakage current test module, be grounded insulation measuring ability.
The beneficial effect that technical solutions of the utility model are brought
(1) protective device two rows (small-sized DC circuit breaker) or both positive and negative polarity stack (fuse) are arranged, middle (small-sized DC circuit breaker) or top (fuse) arrange current detection module, between protective device and current detection module, be flexibly connected, in reduced volume, the maintainability that has improved photovoltaic combiner box, maintenance cost significantly reduces;
(2) fuse both positive and negative polarity stack arrangement is convenient in photovoltaic combiner box, increase ground insulation measuring ability, has improved the security of system of photovoltaic combiner box;
(3) controller module and the power module layout that superposes up and down, forms power supply/controller composite module, has further dwindled box volume, and cost is low.
Brief description of the drawings
Fig. 1 is scheme 1 structural representation of the utility model photovoltaic combiner box.
Fig. 2 is scheme 2 structural representations of the utility model photovoltaic combiner box.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment 1: a kind of photovoltaic combiner box comprises casing, mounting panel, fuse, current detection module, lightning protection device, power module, controller module, leakage current test module (when client needs), earth terminal and communication terminal.Protective device, current detection module, lightning protection device, power module, controller module, leakage current test module (when client needs), earth terminal and communication terminal are all arranged on mounting panel; Controller and power module adopt stack design, and power module is positioned at controller lower floor, and both adopt connector to connect, composition power supply/controller composite module, in this arrangement, by the placement of high-tension circuit part and bottom power panel, greatly improved fail safe.If arrange according to conventional scheme, volume is large, and binding post is many, occurs that the possibility of virtual connection is large, poor reliability.This scheme volume is little, and reliability is high, and it is convenient to install, easy to operate.Fuse and current detection module are arranged on the below of power supply/controller composite module and lightning protector module, and fuse is positioned at current detection module below, and current detection module is flexibly connected with fuse by grafting or screw; The stack of fuse both positive and negative polarity is arranged, if arrange according to conventional scheme, cannot install leak current detection device additional, causes the afunction of photovoltaic combiner box.Earth terminal and communication terminal are arranged on the right side of protective device; Direct-current isolating switch or direct current mold cased circuit breaker are arranged at the right side of other modules.Leakage current test module arrangement is (when client needs) between protective device and current detection module, is fixed and is connected by grafting, and current detection module is plugged on leakage current test module top, is be also fixed and be connected by grafting.
Operation principle: photovoltaic array output line is connected in fuse lower port.Electric current, after overcurrent fuse, outputs to leakage current test module; Negative pole circuit confluxes and is connected in an end of incoming cables of direct-current isolating switch or direct current mold cased circuit breaker, and cathode circuit, through current detection module, confluxes and is passed to direct-current isolating switch or another end of incoming cables of direct current mold cased circuit breaker in current detection module; Electric current is exported after by direct-current isolating switch or direct current mold cased circuit breaker, is connected with inverter, so far completes the task of confluxing of photovoltaic combiner box.Lightning protection device is connected with earth terminal with the input terminal of direct-current isolating switch or direct current mold cased circuit breaker respectively, current detection module and power supply/controller composite module carry out transfer of data by data wire, and the relevant information of controller is carried out outbound data transmission by communication terminal.
Embodiment 2: a kind of Novel intelligent photovoltaic combiner box, comprises casing, mounting panel, small-sized DC circuit breaker, current detection module, direct-current isolating switch or direct current mold cased circuit breaker, lightning protection device, power supply and controller composite module, earth terminal and communication terminal.Small-sized DC circuit breaker, current detection module, direct-current isolating switch or direct current mold cased circuit breaker, lightning protection device, power supply and controller composite module, earth terminal and communication terminal are all arranged on mounting panel; Small-sized DC circuit breaker and current detection module are arranged in mounting panel left side, small-sized DC circuit breaker is upper and lower two to arrange and put, current detection module is set in the middle of it, two groups of small-sized DC circuit breakers are pegged graft or are flexibly connected by screw with current detection module is staggered, detect the operating current of upper and lower two row's small-sized DC circuit breakers simultaneously, if arrange according to conventional scheme, casing length direction is than existing scheme increase by 50% length nearly, cause casing excessive, cannot meet field erected requirement according to conventional scheme.Direct-current isolating switch or direct current mold cased circuit breaker are arranged on the right side of two row's small-sized DC circuit breakers; Power supply and controller composite module are that upper and lower stack is arranged, power module is arranged in controller module below, composition power supply and controller composite module, and this power supply and controller composite module are arranged in the top of direct-current isolating switch or direct current mold cased circuit breaker.Lightning protection device and earth terminal and communication terminal thereof are arranged in direct-current isolating switch or direct current mold cased circuit breaker right side, and lightning protection device is arranged in earth terminal and communication terminal top.
The current work principle of photovoltaic combiner box: photovoltaic battery array positive pole is connected in corresponding multiple small-sized DC circuit breaker, current detection module is flexibly connected with two rows small-sized DC circuit breaker, and current detection module detects the operating current of upper and lower two row's small-sized DC circuit breakers simultaneously.After positive electrode current confluxes in current detection module, be connected with the input terminal of direct-current isolating switch or direct current mold cased circuit breaker by bus-bar; Photovoltaic array negative pole connects after corresponding multiple small-sized DC circuit breakers, after confluxing, is connected with another input terminal of direct-current isolating switch or direct current mold cased circuit breaker by negative bus-bar.Two ports of lightning protection device are connected with the input terminal of direct-current isolating switch or direct current mold cased circuit breaker respectively, and another one port is connected with earth terminal.Power supply and controller composite module carry out exchanges data by data circuit, and the output data line of power supply and controller composite module is connected on communication terminal, can externally carry out exchanges data.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect have been carried out to further detailed description; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. a low profile photovoltaic header box; inside arranges many group photovoltaic cell string protective devices, at least one current measurement module, at least one lightning protector module, at least one direct-current isolating switch or direct current mold cased circuit breaker, at least one power module, at least one controller module, earth terminal and communication terminal, it is characterized in that:
Described photovoltaic cell string protective device and current measurement module are placed on a side of photovoltaic combiner box;
Described direct-current isolating switch or direct current mold cased circuit breaker are placed on the opposite side of photovoltaic combiner box.
2. photovoltaic combiner box as claimed in claim 1, is characterized in that:
When described photovoltaic cell string protective device is small-sized DC circuit breaker, can two rows correspondence arrange, current detection module is between upper and lower two groups of protective devices, and every group of protective device adopts manner to be connected with current detection module.
3. photovoltaic combiner box as claimed in claim 1, is characterized in that:
When described protective device is DC fuse, can both positive and negative polarity stack arrange, current detection module is positioned at the upside of protective device, and protective device adopts manner to be connected with current detection module.
4. photovoltaic combiner box as claimed in claim 2 or claim 3, is characterized in that:
Between described protective device and current detection module, can adopt grafting or the fixing mode of screw to be connected.
5. photovoltaic combiner box as claimed in claim 1, is characterized in that:
The setting that superposes up and down of described power module and controller module, power module is positioned at controller module lower floor, and both adopt connector to connect, and form power supply/controller composite module;
Described power supply/controller composite module is arranged at protective device and current detection module top.
6. photovoltaic combiner box as claimed in claim 1, is characterized in that:
Described direct-current isolating switch or direct current mold cased circuit breaker are arranged at the right side of protective device and current detection module.
7. photovoltaic combiner box as claimed in claim 1, is characterized in that:
In the time that described protective device is fuse, can in photovoltaic combiner box, increase leakage current test module, realize the measuring ability of leakage current.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255951.9U CN203984337U (en) | 2014-05-20 | 2014-05-20 | A kind of low profile photovoltaic header box |
| PCT/CN2015/074658 WO2015176577A1 (en) | 2014-05-20 | 2015-03-20 | Miniature photovoltaic combiner box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420255951.9U CN203984337U (en) | 2014-05-20 | 2014-05-20 | A kind of low profile photovoltaic header box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203984337U true CN203984337U (en) | 2014-12-03 |
Family
ID=51981750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420255951.9U Active CN203984337U (en) | 2014-05-20 | 2014-05-20 | A kind of low profile photovoltaic header box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203984337U (en) |
| WO (1) | WO2015176577A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176577A1 (en) * | 2014-05-20 | 2015-11-26 | 北京人民电器厂有限公司 | Miniature photovoltaic combiner box |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093667A (en) * | 2016-08-11 | 2016-11-09 | 许继集团有限公司 | Header box automatic matching test system and test fixture thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601536U (en) * | 2009-12-17 | 2010-10-06 | 深圳市永联科技有限公司 | Intelligent photovoltaic array combiner box of integrated measurement and control module |
| JP2015501625A (en) * | 2011-09-30 | 2015-01-15 | ソーラーボス、インク． | System that integrates DC power from multiple inputs |
| US8699209B2 (en) * | 2012-01-10 | 2014-04-15 | Cooper Technologies Company | Externally fused enclosure for a solar power system |
| CN202549886U (en) * | 2012-04-09 | 2012-11-21 | 杜邦太阳能有限公司 | Photovoltaic junction box |
| CN103267889A (en) * | 2013-06-05 | 2013-08-28 | 温州科宇电器有限公司 | Novel intelligent photovoltaic confluence device |
| CN203984337U (en) * | 2014-05-20 | 2014-12-03 | 北京人民电器厂有限公司 | A kind of low profile photovoltaic header box |
-
2014
- 2014-05-20 CN CN201420255951.9U patent/CN203984337U/en active Active
-
2015
- 2015-03-20 WO PCT/CN2015/074658 patent/WO2015176577A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015176577A1 (en) * | 2014-05-20 | 2015-11-26 | 北京人民电器厂有限公司 | Miniature photovoltaic combiner box |
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| Publication number | Publication date |
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| WO2015176577A1 (en) | 2015-11-26 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |