CN102646741B - Photovoltaic cell panel junction box - Google Patents
Photovoltaic cell panel junction box Download PDFInfo
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- CN102646741B CN102646741B CN201110056200.5A CN201110056200A CN102646741B CN 102646741 B CN102646741 B CN 102646741B CN 201110056200 A CN201110056200 A CN 201110056200A CN 102646741 B CN102646741 B CN 102646741B
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- buckle
- module
- unilateal conduction
- box body
- conduction module
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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
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Abstract
The invention discloses a photovoltaic cell panel junction box, mainly comprising a box body and a one-way conducting module, wherein the one-way conducting module is arranged in the box body, the box body takes a rowed buckle as a demarcation point, a part above the rowed buckle is hollow, a one-way conduction module cavity with a base plate is arranged below the rowed buckle, and a locating seat is arranged just below the rowed buckle correspondingly; and the one-way conducting module is an integrated module and has the following main structure: a naked copper sheet part outside a welding point is covered by an insulating adhesive on an aluminum-based copper-clad plate, and each group of the welding points are sequentially welded with a wiring seat, a chip and a wire jumper, and diodes in the one-way conducting module are connected in series. The one-way conducting module disclosed by the invention has the advantages that: 1, the volume is compressed and the miniaturization of an auxiliary bypass is provided with foundation due to the arrangement of the integrated module; 2, consumed materials are reduced and the cost is reduced due to the arrangement of the integrated module, and the integrated module can be directly arranged at one time so as to have simple steps and high efficiency; and 3, the base plate of the integrated module utilizes an aluminum-based copper-clad plate and two bosses are further reserved on a rectangular base material, so that the area of the base material is increased as large as possible, the characteristic of an excellent heat insulation performance of an aluminum material is utilized, the heat-radiating area is further increased, and the problem that the heat radiation of a junction box is difficult is solved.
Description
Technical field
The present invention relates generally to a kind of wire junction box, and specifically a kind of terminal box that is applicable to photovoltaic battery panel mainly by establishing unilateal conduction module composition in box body, is carried out the adjusting of electric current under abnormal operating state to photovoltaic battery panel.
Background technology
Solar watch surface temperature is up to 6000 ℃, and nuclear fusion reaction is constantly carried out in inside, and to cosmic space, launches huge energy with radiation mode.The method that solar power generation is exactly is electric energy the Conversion of Energy shining upon.The semiconductor device that directly solar energy is become to electric energy claims photovoltaic cell, and this technology is grasped by the mankind already.
TheCourse of PV Industry is swift and violent in recent years, has become one of photovoltaic industry base the biggest in the world.The whole world helps the country of photovoltaic generation to have more than 40, and is increasing every year.The cost of photovoltaic industry 2 orders of magnitude that declined for 30 years in the past, photovoltaic industry keeps the growth of annual 40%-50%, photovoltaic generation market, the world also will present the growth of 10 speeds, this market as the annual 100-200MW before 5 years 2000-3000MW till now.But the 8-10 of thermoelectricity generating electricity price doubly.Under the support of countries in the world photovoltaic incentive policy, photovoltaic industry is accelerated application on the one hand, and technological progress and large-scale production, enter benign cycle; On the other hand, photovoltaic generation subsidy declines more than 5% every year, and the annual decline 7%-8% of beginning such as German.The amplitude of photovoltaic generation cost decline must be greater than the amplitude that subsidy declines, and Zhe Yeshi government helps the original intention of photovoltaic, and hope is helped thus and ordered about photovoltaic and improve fast, and cost declines.Photovoltaic generation is equivalent to power plant for self-supply as small distributed power, at present only to compare with electrical network retail electricity price.Once photovoltaic generation cost reaches the threshold of electrical network retail electricity price, photovoltaic will enter the demulsification phase from lactation, carefully analyze photovoltaic industry chain, the production cost of crystal-silicon solar cell and links, consider silicon material problem in short supply, we predict that global photovoltaic in 2012 will enter the demulsification phase, and its sign is photovoltaic generation cost 0.15-0.25 dollar/kWh, maintain an equal level with developed country electrical network retail electricity price.
Within 2007, China's solar cell/module production accounts for the more than 27% of world wide production, over Japan, Europe, becomes first producing country; Photovoltaic industry is leading with solar cell/assembly, drives whole industrial chain balance harmony development, and China has formed a high-caliber scale, specialization and international photovoltaic industry group.
But, heat accumulation when at present photovoltaic solar transforms the diode operation in the bypass connection box that electric energy existed since medium-term and long-term, and be difficult to the difficult problem that dissipates.This is mainly because photovoltaic battery panel will guarantee that when accepting hot photograph cell panel plate area source is even, unrestricted and decay, the balance of guarantee electric current, otherwise, will cause electric current local increase of moment, breaking-up cell panel.People, in order to overcome this problem, use a kind of terminal box always, and this terminal box is mainly to realize the current lead-through under cell panel abnormal operating state by a unilateal conduction module.The structure of this unilateal conduction module is: in terminal box with mode several single identical diodes of connecting of welding simultaneously, as shown in Figure 1.The shortcoming of this structure is: 1, owing to being single welding, installation steps are complicated; 2, due to diode adopt be copper material and silicon material as stock, due to its material, itself to have poor radiation, heat radiation point little, can area of dissipation little, affects the useful life of terminal box; 3, single diode utilizes outside auxiliary welding gimmick, its system final unilateal conduction module volume excessive, do not meet the development trend of miniaturization of electronic products.
Summary of the invention
Main task of the present invention is to provide a kind of connection box for photovoltaic battery board, specifically little, the perfect heat-dissipating of a kind of volume, be convenient to the photovoltaic junction box installed.
In order to solve above technical problem, a kind of connection box for photovoltaic battery board of the present invention, mainly contain and in box body, box body, be provided with unilateal conduction module, it is characterized in that: described box body be take townhouse buckle as separation, townhouse buckle top is hollow, townhouse buckle below is the unilateal conduction module with base plate, townhouse buckle corresponding under, be provided with positioning seat; Described unilateal conduction module is integration module, is mainly on aluminum-based copper-clad plate and covers the exposed copper sheet part except pad with insulating cement, and weld successively junction block, chip, wire jumper on every assembly welding contact, by the diode series connection in unilateal conduction module.
Further, each buckle of described townhouse buckle is the U-shaped structure of flange,
Further, a side symmetry at the inlet wire port place that described aluminum-based copper-clad plate is rectangular configuration is set up a pair of symmetrical boss, and this boss and rectangular configuration global formation.
The invention has the advantages that: 1, unilateal conduction module of the present invention adopts integrated form module, has compressed volume, for auxiliary bypass miniaturization provides the foundation; 2, adopt integrated form module, reduce materials, reduce costs, and can be directly install module is disposable, step is simple, efficiency is high; 3, the aluminium base sheet material that covers copper that the substrate of integrated form module of the present invention adopts, and more than on the base material of rectangle, reserve two boss, increase as far as possible base material area, utilize the good feature of the thermal diffusivity of aluminium matter own, increase again area of dissipation, solved the terminal box difficult problem of dispelling the heat.
Accompanying drawing explanation
Fig. 1 is the structural representation that single welding diode becomes unidirectional module.
Fig. 2 is structural representation of the present invention.
Fig. 3 is terminal box body structural representation of the present invention.
Fig. 4 is unilateal conduction modular structure schematic diagram of the present invention.
Embodiment
As shown in Figure 2, connection box for photovoltaic battery board of the present invention, consists of the built-in unilateal conduction module 2 of terminal box body 1.
As shown in Figure 3, described box body 1 be take townhouse buckle 3 as separation, each buckle of townhouse buckle is the U-shaped structure of flange, and townhouse buckle 3 tops are hollow, townhouse buckle 3 belows are the unilateal conduction cavity block with base plate 4, in townhouse buckle 3 each buckle corresponding under, be provided with positioning seat 6.A cable outlet 7 is respectively established at two ends below box body 1.
As shown in Figure 4, described unilateal conduction module 2 is integration module, be mainly on aluminum-based copper-clad plate 8 and cover the exposed copper sheet part except pad 9 with insulating cement, and on every assembly welding contact, weld successively junction block 10, chip 11, form diode, on the weld tabs between adjacent diode, weld again wire jumper 12, the some diodes in unilateal conduction module are connected successively.
The structure of the junction block 10 in above-mentioned unilateal conduction module 2 is: junction block 10 consists of an inlet wire port 13 and outlet port 14 global formations, and inlet wire port 13 has a side of boss at aluminum-based copper-clad plate 8.Because the diode in unilateal conduction module 2 of the present invention is series connection, therefore, general outlet port 14 is on the shelf, only has the outlet port of two ends junction block 10 to connect respectively both positive and negative polarity cable.
The step that above-mentioned unilateal conduction module 2 is installed in box body 1 is: the unilateal conduction module 2 assembling is in advance placed in the unilateal conduction cavity block of box body 1, on it, some junction blocks 10 stick in corresponding buckle, and establish alignment pin 15 in the center of junction block 10, be located by connecting with positioning seat 6 and the fixing position of unilateal conduction module 2 and box body 1.Then, several inlet wire ports on junction block 10 are connected with the line of drawing on photovoltaic battery panel successively, then at the outlet port place that is positioned at the junction block at unilateal conduction module 2 two ends, by both positive and negative polarity, connect cable respectively and be incorporated to photovoltaic battery panel bypass.
Use: when photovoltaic battery panel is in improper light source constrained state, connected additional conductive bypass start-up, by unilateal conduction module 2 On currents of terminal box 1, guarantees the current balance type in photovoltaic battery panel.
Main innovate point of the present invention is the improvement to unilateal conduction module 2, guarantees its good heat dispersion, to extend the useful life of terminal box.
Embodiment
First, make above-mentioned terminal box.In this terminal box, it is the integrated form unilateal conduction module that 3 diode chip for backlight unit are connected and formed by wire jumper.
Secondly, choose terminal box common on market.In this terminal box, be 4 unilateal conduction modules that the series connection of single welding diode forms.
Above two terminal boxes can be used in the circuit of same photovoltaic electric magnetic sheet, and can mutually replace, and function is consistent.
Experiment 1: range estimation volume: integrated form unilateal conduction module is significantly less than the unilateal conduction module that single welding diode series connection forms.
Experiment 2: at 25 ℃ of normal temperature, the direct current of logical 20A, after 20 minutes, tests the temperature of the unilateal conduction module that single welding diode series connection forms, and is 150-165 ℃; Test set accepted way of doing sth unilateal conduction module temperature: 120-135 ℃, its integrated form heat dispersion is obviously better than the unilateal conduction module that single welding diode series connection forms.
Experiment 3: at 25 ℃ of normal temperature, the direct current of logical 20A, after 20 minutes, detected temperatures: the temperature of the unilateal conduction module that single welding diode series connection forms is 150-165 ℃; Test set accepted way of doing sth unilateal conduction module temperature: 120-135 ℃; Then, power-off 5 minutes, tests the temperature of the unilateal conduction module that the series connection of single welding diode forms, and is 86-102 ℃; Test set accepted way of doing sth unilateal conduction module temperature: 52-63 ℃. its integrated form unilateal conduction module heat dissipating successful is excellent.
Claims (3)
1. a connection box for photovoltaic battery board, mainly contain and in box body, box body, be provided with unilateal conduction module, it is characterized in that: described box body be take townhouse buckle as separation, townhouse buckle top is hollow, townhouse buckle below is the unilateal conduction cavity block with base plate, townhouse buckle corresponding under, be provided with positioning seat; Described unilateal conduction module is integration module, covers the exposed copper sheet part except pad, and weld successively junction block, chip, wire jumper on every assembly welding contact, by the diode series connection in unilateal conduction module on aluminum-based copper-clad plate with insulating cement; The step that unilateal conduction module is installed in box body is: the unilateal conduction module assembling is in advance placed in the unilateal conduction cavity block of box body, on it, some junction blocks stick in corresponding buckle, and establish alignment pin in the center of junction block, be located by connecting with positioning seat and the fixing position of unilateal conduction module and box body; Then, several inlet wire ports on junction block are connected with the line of drawing on photovoltaic battery panel successively, then at the outlet port place that is positioned at the junction block at unilateal conduction module two ends, by both positive and negative polarity, connect cable respectively and be incorporated to photovoltaic battery panel bypass.
2. a kind of connection box for photovoltaic battery board according to claim 1, is characterized in that: each buckle of described townhouse buckle is the U-shaped structure of flange.
3. a kind of connection box for photovoltaic battery board according to claim 1, is characterized in that: described aluminum-based copper-clad plate is rectangular configuration, and a side symmetry at inlet wire port place sets up a pair of symmetrical boss, and this boss and rectangular configuration global formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110056200.5A CN102646741B (en) | 2011-03-09 | 2011-03-09 | Photovoltaic cell panel junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110056200.5A CN102646741B (en) | 2011-03-09 | 2011-03-09 | Photovoltaic cell panel junction box |
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| Publication Number | Publication Date |
|---|---|
| CN102646741A CN102646741A (en) | 2012-08-22 |
| CN102646741B true CN102646741B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110056200.5A Active CN102646741B (en) | 2011-03-09 | 2011-03-09 | Photovoltaic cell panel junction box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115566092A (en) | 2022-10-26 | 2023-01-03 | 上海晶科绿能企业管理有限公司 | Photovoltaic module and manufacturing process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201425972Y (en) * | 2009-04-16 | 2010-03-17 | 苏州瀚德光伏科技有限公司 | Solar junction box |
| CN201426028Y (en) * | 2009-03-12 | 2010-03-17 | 苏州瀚德光伏科技有限公司 | Solar junction box |
| CN201450294U (en) * | 2009-07-16 | 2010-05-05 | 宜兴市天勤电子有限公司 | Junction box of solar cell panel |
| CN202058762U (en) * | 2011-03-09 | 2011-11-30 | 南通康比电子有限公司 | Connection box for photovoltaic battery board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3498945B2 (en) * | 1999-09-01 | 2004-02-23 | オーナンバ株式会社 | Terminal box device for connecting solar cell modules |
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2011
- 2011-03-09 CN CN201110056200.5A patent/CN102646741B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201426028Y (en) * | 2009-03-12 | 2010-03-17 | 苏州瀚德光伏科技有限公司 | Solar junction box |
| CN201425972Y (en) * | 2009-04-16 | 2010-03-17 | 苏州瀚德光伏科技有限公司 | Solar junction box |
| CN201450294U (en) * | 2009-07-16 | 2010-05-05 | 宜兴市天勤电子有限公司 | Junction box of solar cell panel |
| CN202058762U (en) * | 2011-03-09 | 2011-11-30 | 南通康比电子有限公司 | Connection box for photovoltaic battery board |
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| Publication number | Publication date |
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| CN102646741A (en) | 2012-08-22 |
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