CN103035768A - Solar battery assembly and preparing method thereof - Google Patents
Solar battery assembly and preparing method thereof Download PDFInfo
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- CN103035768A CN103035768A CN2012105859563A CN201210585956A CN103035768A CN 103035768 A CN103035768 A CN 103035768A CN 2012105859563 A CN2012105859563 A CN 2012105859563A CN 201210585956 A CN201210585956 A CN 201210585956A CN 103035768 A CN103035768 A CN 103035768A
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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
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- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a solar battery assembly which comprises a surface layer, a first bonding layer, a solar battery layer, a second bonding layer, a back plate layer, a third layer bonding layer and a base layer which are sequentially laminated. The surface layer is an ethylene-tetrafluoroethylene (ETFE) copolymer layer, an ETFE membrane is adopted, and the base layer is made of light supporting materials. According to the solar battery assembly, the ETFE membrane and the light supporting materials replace photovoltaic glass, the weight of the whole assembly is reduced, and surface heat dissipation performance of the solar battery assembly is effectively improved. Additionally, the solar battery assembly has a foldable characteristic, package transportation cost is reduced, and meanwhile the solar battery assembly is probably widely used in daily life. The invention further discloses a preparing method of the solar battery assembly, equipment used for preparing the solar battery assembly is universal equipment used in solar battery enterprises, the method is simple, and industrial large-scale production is easy to achieve.
Description
Technical field
The present invention relates to the solar cell field, relate in particular to a kind of solar module and preparation method thereof.Background technology
Because global energy crisis and environmental problem is increasingly serious, people are more and more urgent to the demand of new forms of energy and non-pollution renewable energy, and solar cell is technology rising in the new and renewable sources of energy.In recent years, solar cell obtains the great attention of countries in the world as a kind of renewable and clean energy resource, and scientific research and industry development are all very rapid.Crystal-silicon solar cell occupies the leading position of industry with advantages such as its higher photoelectric conversion efficiency, abundant raw material, industrial production stability, and the photovoltaic market share surpasses 90%.
The primary element of solar energy power generating is the solar battery cell sheet, and monocrystalline silicon, polysilicon and hull cell etc. are arranged.One or several solar battery cell sheet forms solar module through encapsulation.
The crystalline silicon solar cell modules encapsulating structure of existing solar cell plant produced is for by photovoltaic glass, EVA(ethylene-vinyl acetate copolymer) the compound fluoroplastics film of solar panel, EVA glued membrane and weatherability (TPT) backboard that connects of glued membrane, connection in series-parallel successively superimposed heating in vacuum lamination form, the TPT backboard comprises fluoropolymer layer, PETG layer and the fluoropolymer layer that stacks gradually.But above-mentioned solar module is photovoltaic glass because of skin-material, exist frangible, from the defective that can't overcome such as great, can't satisfy the required requirement such as light, collapsible, portable in the daily life, so that the application of this construction package has been subject to certain restriction.The collapsible solar module technology of development of new lightweight has important using value thus.
Application publication number is that the Chinese invention patent application of CN102044584A discloses a kind of solar module, stacked gradually from top to bottom by top layer, upper ethylene-vinyl acetate copolymer layer, the first photic zone, middle ethylene-vinyl acetate copolymer layer, solar cell layer, lower ethylene-vinyl acetate copolymer layer, the second photic zone and detachable backsheet layer and to arrange, to encapsulate and consist of, described top layer, the first photic zone and the second photic zone are the toughened glass layer, and detachable backsheet layer is light tight.Although this technical scheme improves light transmittance and intensity by multilayer tempering glassy layer is set, its weight is still heavier, not foldable and carrying.
Application publication number is that the Chinese invention patent application of CN102694043A discloses a kind of solar panel (being solar module), comprise the perfluoroethylene-propylene film, ethylene-vinyl acetate copolymer layer, solar cell piece, ethylene-vinyl acetate copolymer layer and the fiberglass reinforced panel that stack gradually, and the sealing joint strip sealing is all adopted in its edge.This technical scheme adopts perfluoroethylene-propylene film, fiberglass reinforced panel to substitute toughened glass of the prior art, polyvinyl fluoride composite membrane, solar panel adopts the sealing joint strip sealing, need not to use aluminum alloy frame, thereby greatly reduce the weight of solar panel, convenient carrying and installation, but the heat-resisting quantity of perfluoroethylene-propylene film is not good, and aging and fusing to a certain extent occur easily, thus the useful life of having reduced solar panel.
Summary of the invention
Based on the shortcoming and defect of existing market-oriented crystalline silicon solar cell modules, the purpose of this invention is to provide a kind of light, high output, low cost, can be used for the solar module in the daily life.
Technical scheme of the present invention is as follows:
A kind of solar module, comprise top layer, the first tack coat, solar cell layer, the second tack coat, backsheet layer, the 3rd layer of tack coat and basic unit of stacking gradually, described top layer is ethylene-tetrafluoroethylene copolymer (ETFE) layer, and described basic unit is the lightweight backing material.
Adopt ethylene-tetrafluoroethylene copolymer (ETFE) layer and lightweight backing material can alleviate the weight of solar module, convenient carrying and installation, and ethylene-tetrafluoroethylene copolymer (ETFE) layer light transmittance and temperature tolerance are all better, the generating efficiency and the useful life that are conducive to improve solar module of the present invention.
Ethylene-tetrafluoroethylene copolymer (ETFE) layer can adopt commercially available etfe film.As preferably, the thickness of described ethylene-tetrafluoroethylene copolymer layer is 0.01 ~ 1 millimeter, and size is as the criterion to cover solar module fully.
Described the first tack coat, the second tack coat and the 3rd layer of tack coat all can adopt prior art, as preferably, described the first tack coat, the second tack coat and the 3rd layer of tack coat are ethylene-vinyl acetate copolymer layer, have good performance, be conducive to solar module of the present invention and form good encapsulating structure.
Described solar cell layer comprises at least one solar cell piece, solar cell piece can adopt prior art, can adopt single crystal silicon solar cell sheet, polycrystalline silicon solar cell sheet etc., described solar cell piece adopts single crystal silicon solar cell sheet or polycrystalline silicon solar cell sheet.As preferably, described solar cell layer comprises plural solar cell piece, and connection in series-parallel forms array between a plurality of solar cell pieces.Further preferred, be provided with 1 ~ 100 millimeter folding space between the described solar cell piece, the employed welding of the connection of each solar cell piece, busbar and wire etc. all adopt the flexible foldable material.Crystal-silicon solar cell occupies the leading position of industry with advantages such as its higher photoelectric conversion efficiency, abundant raw material, industrial production stability, selects single crystal silicon solar cell sheet or polycrystalline silicon solar cell sheet to be conducive to the marketization and applies.
Further preferred, each solar cell piece in the described solar cell layer is to having the first bonding sheet of being arranged in the first tack coat, the second bonding sheet in the second tack coat, backboard, the 3rd bonding sheet in the 3rd layer of tack coat and the substrate in the basic unit in the backsheet layer, the first bonding sheet, solar cell piece, the second bonding sheet, backboard, the 3rd bonding sheet and substrate stack gradually, thereby realize each solar cell piece is encapsulated.
Further preferred, the size of described the first bonding sheet, the second bonding sheet, backboard, the 3rd bonding sheet and substrate is consistent, greater than solar cell piece, wherein length is than grow up 1 ~ 100 millimeter of solar cell piece, wide than solar cell piece roomy 1 ~ 100 millimeter is convenient to each solar cell piece is encapsulated.Further preferred, the size of described the first bonding sheet, the second bonding sheet, backboard, the 3rd bonding sheet and substrate is consistent, long grow up 3 ~ 10 millimeters than solar cell piece, and wide than solar cell piece roomy 3 ~ 10 millimeters,
The thickness of the first bonding sheet, solar cell piece, the second bonding sheet, backboard, the 3rd bonding sheet and substrate can adopt the usual thickness in solar cell field.
The backboard of described backsheet layer can adopt prior art, and as adopting the TPT backboard, as preferably, the backboard in the described backsheet layer comprises polyvinyl fluoride layer, PETG layer and the polyvinyl fluoride layer that stacks gradually.The thickness of described backboard is 0.01 ~ 1 millimeter, the substrate in the same size in size and the basic unit.
Described basic unit is the lightweight backing material, as preferably, described basic unit adopts a kind of in carbon fiber board, polymethyl methacrylate, fiberglass, the expanded polypropylene (EPP) etc., the thickness of described basic unit is 1 ~ 100 millimeter, the length of substrate is than grow up 1 ~ 100 millimeter of solar cell piece in the basic unit, than solar cell piece roomy 1 ~ 100 millimeter of substrate wide in the basic unit.Further preferred, consider strong supportive and high-temperature stability that basic unit is required, the substrate in the described basic unit adopts carbon fiber board.
The present invention also provides a kind of preparation method of solar module, adopts existing solar module laminating machine to implement, and method is simple, is easy to realize large-scale industrialization production.
A kind of preparation method of solar module may further comprise the steps:
Top layer, the first tack coat, solar cell layer, the second tack coat, backsheet layer, the 3rd layer of tack coat and basic unit are stacked gradually, after 5 ~ 150 minutes, obtain solar module at 50 ℃ ~ 200 ℃ heating in vacuum laminations.
The heating in vacuum lamination can adopt solar cell enterprise to produce general solar module laminating machine.
Compared with prior art, the invention has the advantages that:
Solar module of the present invention adopts etfe film and lightweight backing material to replace photovoltaic glass, reduced the weight of black box, and effectively improved the solar module surface radiating, in preferred technical scheme, be provided with folding space between the solar cell piece, not only reduced the packed and transported cost, and be expected to be used widely in daily life; Make simultaneously solar module possess foldable properties, convenient carrying and installation.
Adopting the fusion temperature of etfe film is 260 ℃ ~ 270 ℃, and the thermal decomposition occurrence temperature is 350 ℃ ~ 360 ℃, and under normal conditions, etfe film can not occur aging and fusing; The visible light transmissivity of etfe film reaches 95%, and ultraviolet transmitance also reaches 80%, can improve the power output of solar module; The Breaking elongation of etfe film reaches more than 300%, effectively guarantee the repetition folding property of solar module, the etfe film on top layer has the self-cleaning performance of high transmission rate, good durability, excellence, is conducive to improve the power output of solar module and reduces the regular maintenance management cost.
The preparation method of solar module of the present invention adopts solar cell enterprise to produce general solar module laminating machine, need not to introduce new equipment, and method is simple, has reduced production cost, is fit to large-scale industrialization production.
Description of drawings
Fig. 1 is the fractionation structural representation of solar module of the present invention.
Embodiment
Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail with specific embodiment, but the present invention is not limited to embodiment, can adjust according to actual conditions.
Shown in 1, solar module of the present invention, comprise the top layer 1 that stacks gradually, the first tack coat 2, solar cell layer 3, the second tack coat 4, backsheet layer 5, the 3rd layer of tack coat 6 and basic unit 7, top layer 1 is ethylene-tetrafluoroethylene copolymer (ETFE) layer, and basic unit 7 is the lightweight backing material.
The first tack coat 2, the second tack coat 4 and the 3rd layer of tack coat 6 are ethylene-vinyl acetate copolymer layer.
Shown in 1, solar module of the present invention, comprise the top layer 1 that stacks gradually, the first tack coat 2, solar cell layer 3, the second tack coat 4, backsheet layer 5, the 3rd layer of tack coat 6 and basic unit 7, top layer 1 is ethylene-tetrafluoroethylene copolymer (ETFE) layer, and basic unit 7 is the lightweight backing material.
Stacked 7 layers of structure successively, comprise that (thickness is 0.1 millimeter to 350 millimeters * 190 millimeters etfe films, Japan AGC, Aflon), (thickness is 5mm to ground floor EVA glued membrane, Shenzhen Southwick), (thickness is 5mm for solar cell piece, second layer EVA glued membrane, Shenzhen Southwick), (thickness is 0.28 millimeter to the TPT backboard, LG Corp of South Korea production TPT backboard), the 3rd layer of EVA glued membrane (thickness is 5mm, Shenzhen Southwick) and carbon fiber board (thickness is 2 millimeters, and the Dongguan newly flies glass).Wherein, the size of ground floor EVA glued membrane, second layer EVA glued membrane, TPT backboard, the 3rd layer of EVA glued membrane and carbon fiber board is 130 millimeters * 130 millimeters, be two, namely with two groups of encapsulating structures of two 125 millimeters * 125 millimeters supporting formation of monocrystalline silicon battery sheet, and two groups of encapsulating structures link together by busbar and etfe film, and formation can be to folding solar module.The TPT backboard comprises the polyvinyl fluoride layer, PETG layer and the polyvinyl fluoride layer that stack gradually.Solar cell piece is selected two 125 millimeters * 125 millimeters monocrystalline silicon battery sheets (production of Sani Energy Science Co., Ltd of Zhejiang University) series connection, with picking out both positive and negative polarity behind 2 grid lines of busbar connection, folding space between two solar cell pieces is 25 millimeters, so that folding carrying.Above material is superimposed in order, adopts solar cell enterprise to produce general solar module laminating machine and vacuumizes 6 minutes, and 138 ℃ of heated lamination formed in 18 minutes, obtained novel and portable, foldable solar module.
Table 1
| Parameter | Short circuit current (A) | Open circuit voltage (V) | Maximum power (W) | Fill factor, curve factor (%) | Conversion efficiency (%) |
| Experiment package | 5.697 | 1.251 | 5.466 | 76.69 | 17.49 |
| Commercial component | 5.619 | 1.252 | 5.386 | 76.56 | 17.24 |
Carbon fiber board among the embodiment 1 is replaced with the pure white fiberglass of 3 millimeters thick, and size also is 130 millimeters * 130 millimeters, and other are with embodiment 1.Solar module output characteristic phase and the embodiment 1 of embodiment 2 preparations are basically identical, but supportive and the high-temperature stability of basic unit slightly are better than embodiment 2 in the solar module of embodiment 1 preparation.
Claims (10)
1. solar module, it is characterized in that, comprise top layer, the first tack coat, solar cell layer, the second tack coat, backsheet layer, the 3rd layer of tack coat and basic unit of stacking gradually, described top layer is the ethylene-tetrafluoroethylene copolymer layer, and described basic unit is the lightweight backing material.
2. solar module according to claim 1 is characterized in that, the thickness of described ethylene-tetrafluoroethylene copolymer layer is 0.01 ~ 1 millimeter.
3. solar module according to claim 1 is characterized in that, described the first tack coat, the second tack coat and the 3rd layer of tack coat are ethylene-vinyl acetate copolymer layer.
4. solar module according to claim 1 is characterized in that, described solar cell layer comprises at least one solar cell piece, and described solar cell piece adopts single crystal silicon solar cell sheet or polycrystalline silicon solar cell sheet.
5. solar module according to claim 4 is characterized in that, described solar cell layer comprises plural solar cell piece, and connection in series-parallel forms array between a plurality of solar cell pieces.
6. solar module according to claim 5 is characterized in that, is provided with 1 ~ 100 millimeter folding space between the described solar cell piece.
7. solar module according to claim 5, it is characterized in that, each solar cell piece in the described solar cell layer is to having the first bonding sheet of being arranged in the first tack coat, the second bonding sheet in the second tack coat, backboard, the 3rd bonding sheet in the 3rd layer of tack coat and the substrate in the basic unit in the backsheet layer, and the first bonding sheet, solar cell piece, the second bonding sheet, backboard, the 3rd bonding sheet and substrate stack gradually.
8. solar module according to claim 7, it is characterized in that, the size of described the first bonding sheet, the second bonding sheet, backboard, the 3rd bonding sheet and substrate is consistent, greater than solar cell piece, long grow up 1 ~ 100 millimeter than solar cell piece wherein, wide than solar cell piece roomy 1 ~ 100 millimeter.
9. solar module according to claim 1 is characterized in that, described basic unit adopts a kind of in carbon fiber board, polymethyl methacrylate, fiberglass, the expanded polypropylene.
10. the preparation method of each described solar module is characterized in that according to claim 1 ~ 9, may further comprise the steps:
Top layer, the first tack coat, solar cell layer, the second tack coat, backsheet layer, the 3rd layer of tack coat and basic unit are stacked gradually, after 5 ~ 150 minutes, obtain solar module at 50 ℃ ~ 200 ℃ heating in vacuum laminations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012105859563A CN103035768A (en) | 2012-12-28 | 2012-12-28 | Solar battery assembly and preparing method thereof |
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| CN2012105859563A CN103035768A (en) | 2012-12-28 | 2012-12-28 | Solar battery assembly and preparing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299002A (en) * | 2016-09-14 | 2017-01-04 | 中国电子科技集团公司第四十八研究所 | Flexible solar cell assembly and its preparation method and application |
| CN106379516A (en) * | 2016-09-14 | 2017-02-08 | 中国电子科技集团公司第四十八研究所 | Solar-powered airplane wing and manufacturing method thereof |
| CN107393989A (en) * | 2017-07-05 | 2017-11-24 | 厦门冠宇科技股份有限公司 | The production technology of flexible monocrystaline silicon solar cell |
| CN107768465A (en) * | 2017-09-29 | 2018-03-06 | 宝鸡长达电气科技有限公司 | A kind of solar cell module and preparation method thereof |
| CN110948954A (en) * | 2018-09-25 | 2020-04-03 | 汉能移动能源控股集团有限公司 | Front plate, thin-film solar module and preparation method thereof |
| CN115958853A (en) * | 2022-12-30 | 2023-04-14 | 无锡海达光能股份有限公司 | Laminated glass for photovoltaic tiles |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106299002A (en) * | 2016-09-14 | 2017-01-04 | 中国电子科技集团公司第四十八研究所 | Flexible solar cell assembly and its preparation method and application |
| CN106379516A (en) * | 2016-09-14 | 2017-02-08 | 中国电子科技集团公司第四十八研究所 | Solar-powered airplane wing and manufacturing method thereof |
| CN106299002B (en) * | 2016-09-14 | 2017-07-14 | 中国电子科技集团公司第四十八研究所 | Flexible solar cell component and its preparation method and application |
| CN107393989A (en) * | 2017-07-05 | 2017-11-24 | 厦门冠宇科技股份有限公司 | The production technology of flexible monocrystaline silicon solar cell |
| CN107768465A (en) * | 2017-09-29 | 2018-03-06 | 宝鸡长达电气科技有限公司 | A kind of solar cell module and preparation method thereof |
| CN110948954A (en) * | 2018-09-25 | 2020-04-03 | 汉能移动能源控股集团有限公司 | Front plate, thin-film solar module and preparation method thereof |
| CN115958853A (en) * | 2022-12-30 | 2023-04-14 | 无锡海达光能股份有限公司 | Laminated glass for photovoltaic tiles |
| CN115958853B (en) * | 2022-12-30 | 2023-09-22 | 无锡海达光能股份有限公司 | Laminated glass for photovoltaic tiles |
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Application publication date: 20130410 |