CN202917523U - Rear panel for packaging of thin-film solar cell - Google Patents
Rear panel for packaging of thin-film solar cell Download PDFInfo
- Publication number
- CN202917523U CN202917523U CN 201220561689 CN201220561689U CN202917523U CN 202917523 U CN202917523 U CN 202917523U CN 201220561689 CN201220561689 CN 201220561689 CN 201220561689 U CN201220561689 U CN 201220561689U CN 202917523 U CN202917523 U CN 202917523U
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- thin
- rete
- film solar
- fluorine
- film
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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 relates to the field of the solar cell assembly technology, especially to a rear panel for packaging of a thin-film solar cell. The rear panel comprises a core film layer; a fluorine film layer is arranged at one side of the core film layer and a fluorine film layer or an ethylene-vinyl acetate resin adhesive film layer is arranged at the other side of the core film layer. According to the utility model, the needed material is easily available and the cost is low. The steam transmission rate is low and the water vapor barrier property is good, so that the thin-film solar cell can be effectively protected from being eroded by the water vapor or the environment; and the occurrences of local discharging and leakage phenomena can be avoided, so that the security is high. Therefore, the provided rear panel can be applied to the packaging of the thin-film solar cell and is suitable for industrial production.
Description
Technical field
The utility model relates to the solar module technical field, relates in particular to a kind of backboard for the thin-film solar cells encapsulation.
Background technology
The energy is the lifeblood of economic development, because increasing the weight of of environmental pollution and gradually reducing of the fossil energies such as coal, oil and natural gas, various countries greatly develop the various new energy technologies such as nuclear energy, wind energy, combustible ice, hydrogen energy source in succession.In the above energy, solar energy because of have cleaning, inexhaustible, nexhaustible, development and use are convenient etc., and various advantages are pursued energetically.Especially after the nuclear leakage crisis that Japanese violent earthquake in 2011 causes, the countries such as Germany determine to close down nuclear power station in succession, and enable one after another the popularization that subsidy policy promotes the photovoltaic industry, make solar energy power generating again become the focus that industry is paid close attention to.China has formed the solar energy industry cluster that differs from one another in areas such as the Yangtze River Delta, Pearl River Delta, the ring Bohai Sea and Midwest as the maximum solar module producing country in the whole world.
Solar-photovoltaic technology is divided into crystal silicon, film and three parts of condensation photovoltaic at present, wherein, thin-film solar cells is made owing to working as substrate with different materials such as cheap glass, plastics, pottery, graphite and sheet metals, and electric layer only needs several microns, 1/110 of not enough crystal silicon solar energy battery thickness, not only cost reduces greatly, and production process is simplified, and can make the pliability solar cell and install for curved surface, therefore extensively paid attention to and greatly developed.Yet thin-film solar cells is very responsive to steam, is easy to reduce rapidly because steam causes generating efficiency, and this has extremely low moisture permeability with regard to the back veneer material that requires the packaging film solar cell.Traditional low glass of thin-film solar cells encapsulating material normal operation moisture permeability make so-called pair of glass assembly, but the glass packaging material is heavier, is unfavorable for operation, also can't realize the curved surface installation.Used afterwards the plastic polymer backboard that contains the aluminium foil type, the structure of this kind backboard is generally: fluorine film/aluminium foil/PET film/fluorine film, perhaps fluorine film/aluminium foil/PET/ ethylene-vinyl acetate etc., though this kind backboard can reduce moisture-vapor transmission, improve water vapor barrier property, but since the thickness of the fluorine film of aluminum foil outer layer below 40 microns, so insulation effect is relatively relatively poor, if the fluorine rete has breakage, then easily cause the generation of partial discharge, leaky.
Therefore, how to obtain that a kind of moisture-vapor transmission is low, the water vapor rejection performance is good, and safe backboard, make its encapsulation that can be used for thin-film solar cells, be the problem that this area research person institute wish solves.
The utility model content
The purpose of this utility model is in order to overcome deficiency of the prior art, provide a kind of moisture permeability low, the backboard that can be used for thin-film solar cells encapsulation usefulness, partial discharge and the leaky that may occur in the hope of solving traditional backboard that contains the aluminium foil type improve fail safe.
The technical solution of the utility model is as follows:
A kind of backboard for the thin-film solar cells encapsulation comprises the core rete, and a side of described core rete is provided with the fluorine rete, and opposite side is provided with fluorine rete or ethylene-vinylacetate adhesive film layer.
Preferably, bond by tack coat between described core rete and fluorine rete or the ethylene-vinylacetate adhesive film layer.
Preferably, described core rete comprises barrier layer and at least two laminated polyester films, and two laminated polyester films are located at respectively described barrier layer both sides.
Preferably, bond by tack coat between described barrier layer and the laminated polyester film.
Preferably, described barrier layer thickness is 10～40 μ m, more preferably 20 μ m; Described polyester film layer thickness is 100～130 μ m, more preferably 100 μ m.
Preferably, described fluorine thicknesses of layers is 10～40 μ m, more preferably 25 μ m; Described ethylene-vinylacetate adhesive film layer thickness is 10～80 μ m, more preferably 60 μ m.
Wherein, the material of fluorine rete is a kind of in polyvinyl fluoride, Kynoar, polytrifluorochloroethylene, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoro-ethylene copolymer, perfluoroethylene-propylene copolymer or the hexafluoropropylene (HFP)/tetrafluoroethylene (TFE)-vinylidene fluoride copolymers; The material of polyester rete is PETG (PET) film; The material of tack coat is a kind of in polyurethane glue-line, acrylate glue-line or the epoxy adhesive layer; The material of barrier layer is aluminium foil, polyamide membrane, AM aluminum metallization film or evaporation alundum (Al2O3) film; Vinylacetate (VA) content is 0～35% in ethylene-vinyl acetate (EVA) adhesive film.
The utility model comprises the core rete, one side of core rete is provided with the fluorine rete, opposite side is provided with fluorine rete or ethylene-vinylacetate adhesive film layer, because core rete of the present utility model comprises barrier layer and at least two laminated polyester films, two laminated polyester films are located at respectively described barrier layer both sides, make its moisture-vapor transmission low, the water vapor rejection performance is good, the protective film solar cell is not subjected to steam effectively, the erosion of environment, even in the destroyed situation of fluorine rete, because barrier layer also has laminated polyester film outward, can avoid the generation of partial discharge and leaky; In a word the utility model not only material be easy to get, with low cost, and safe, the encapsulation that can be used for thin-film solar cells is fit to suitability for industrialized production.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the schematic diagram of the another kind of structure of the utility model.
Embodiment
Below will cooperate accompanying drawing, technology contents characteristics and the effect of the utility model will be elaborated.
Embodiment 1
With reference to shown in Figure 1, a kind of backboard for the thin-film solar cells encapsulation, comprise core rete 12, core rete 12 both sides are equipped with the fluorine rete 30 that thickness is 10 μ m, bond by tack coat 20 between core rete 12 and the fluorine rete 30, core rete 12 comprises that thickness is that the barrier layer 10 of 10 μ m and 11, two laminated polyester films 11 of laminated polyester film that two thickness is 130 μ m are located at respectively barrier layer 10 both sides, between barrier layer 10 and the laminated polyester film 11 by tack coat 20 bondings.
The preparation method who is used for the backboard of thin-film solar cells encapsulation, at first the side at PET thin layer 11 is coated with tack coat 20, drying is removed behind the solvent and to be carried out compound under the temperature of the pressure of 0.3MPa and 90 ℃ with aluminium foil barrier layer 10, then at aluminium foil barrier layer 10 coating tack coats 20, drying is removed behind the solvent and to be carried out compound under the pressure of 0.3MPa and 90 ℃ with PET thin layer 11, make core rete 12, then at core rete 12 1 sides coating tack coat 20, oven dry is removed behind the solvent and to be carried out compound under the temperature of the pressure of 0.3MPa and 90 ℃ with Kynoar rete 30, then the opposite side at core rete 12 is coated with tack coat 20, drying is removed behind the solvent and to be carried out compoundly under the temperature of the pressure of 0.3MPa and 90 ℃ with Kynoar rete 30, namely makes two fluorine type backboards.
Embodiment 2
A kind of backboard for the thin-film solar cells encapsulation, comprise core rete 12, core rete 12 both sides are equipped with the fluorine rete 30 that thickness is 40 μ m, bond by tack coat 20 between core rete 12 and the fluorine rete 30, core rete 12 comprises that thickness is barrier layer 10 and two laminated polyester films 11 that thickness is 100 μ m of 40 μ m, two laminated polyester films 11 are located at respectively barrier layer 10 both sides, bond by tack coat 20 between barrier layer 10 and the laminated polyester film 11.
The preparation method is with embodiment 1.
Embodiment 3
With reference to shown in Figure 2, a kind of backboard for the thin-film solar cells encapsulation, comprise core rete 12, core rete 12 1 sides are provided with the fluorine rete 30 that thickness is 25 μ m, opposite side is provided with the ethylene-vinyl acetate that thickness is 60 μ m (EVA) adhesive film 40, bond by tack coat 20 between core rete 12 and the fluorine rete 30, core rete 12 bonds by tack coat 20 with ethylene-vinylacetate adhesive film layer 40, core rete 12 comprises that thickness is barrier layer 10 and two laminated polyester films 11 that thickness is 100 μ m of 20 μ m, two laminated polyester films 11 are located at respectively barrier layer 10 both sides, bond by tack coat 20 between barrier layer 10 and the laminated polyester film 11.
The preparation method is with embodiment 1, difference is: then the opposite side at core rete 12 is coated with tack coat 20, drying is removed behind the solvent and to be carried out compoundly under the temperature of the pressure of 0.3MPa and 90 ℃ with ethylene-vinyl acetate (EVA) adhesive film 40, namely makes single fluorine type backboard.
Embodiment 4
With reference to shown in Figure 2, a kind of backboard for the thin-film solar cells encapsulation, comprise core rete 12, core rete 12 1 sides are provided with the fluorine rete 30 that thickness is 30 μ m, opposite side is provided with the ethylene-vinyl acetate that thickness is 50 μ m (EVA) adhesive film 40, bond by tack coat 20 between core rete 12 and the fluorine rete 30, core rete 12 bonds by tack coat 20 with ethylene-vinylacetate adhesive film layer 40, core rete 12 comprises that thickness is barrier layer 10 and two laminated polyester films 11 that thickness is 110 μ m of 30 μ m, two laminated polyester films 11 are located at respectively barrier layer 10 both sides, bond by tack coat 20 between barrier layer 10 and the laminated polyester film 11.
The preparation method is with embodiment 3.
Above disclosed only is preferred embodiment of the present utility model, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (6)
1. one kind is used for the backboard that thin-film solar cells encapsulates, and it is characterized in that: comprise the core rete, a side of described core rete is provided with the fluorine rete, and opposite side is provided with fluorine rete or ethylene-vinylacetate adhesive film layer.
2. the backboard for the thin-film solar cells encapsulation as claimed in claim 1 is characterized in that: bond by tack coat between described core rete and fluorine rete or the ethylene-vinylacetate adhesive film layer.
3. the backboard for thin-film solar cells encapsulation as claimed in claim 1 or 2, it is characterized in that: described core rete comprises barrier layer and at least two laminated polyester films, two laminated polyester films are located at respectively described barrier layer both sides.
4. the backboard for the thin-film solar cells encapsulation as claimed in claim 3 is characterized in that: bond by tack coat between described barrier layer and the laminated polyester film.
5. the backboard for thin-film solar cells encapsulation as claimed in claim 4, it is characterized in that: described barrier layer thickness is 10～40 μ m, described polyester film layer thickness is 100～130 μ m.
6. the backboard for thin-film solar cells encapsulation as claimed in claim 1, it is characterized in that: described fluorine thicknesses of layers is that the described ethylene-vinylacetate adhesive film layer thickness of 10～40 μ m is 10～80 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561689 CN202917523U (en) | 2012-10-29 | 2012-10-29 | Rear panel for packaging of thin-film solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561689 CN202917523U (en) | 2012-10-29 | 2012-10-29 | Rear panel for packaging of thin-film solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917523U true CN202917523U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561689 Expired - Fee Related CN202917523U (en) | 2012-10-29 | 2012-10-29 | Rear panel for packaging of thin-film solar cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240617A (en) * | 2017-05-12 | 2017-10-10 | 宁波长阳科技股份有限公司 | A kind of compound high water vapor rejection solar cell backboard film and preparation method thereof |
-
2012
- 2012-10-29 CN CN 201220561689 patent/CN202917523U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240617A (en) * | 2017-05-12 | 2017-10-10 | 宁波长阳科技股份有限公司 | A kind of compound high water vapor rejection solar cell backboard film and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130501 Termination date: 20201029 |
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| CF01 | Termination of patent right due to non-payment of annual fee |