CN102082192B - Solar battery backing film, preparation method thereof and solar battery - Google Patents
Solar battery backing film, preparation method thereof and solar battery Download PDFInfo
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- CN102082192B CN102082192B CN200910188448.XA CN200910188448A CN102082192B CN 102082192 B CN102082192 B CN 102082192B CN 200910188448 A CN200910188448 A CN 200910188448A CN 102082192 B CN102082192 B CN 102082192B
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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
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- 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 invention belongs to the technical field of solar battery, in particular to a solar battery backing film. The backing film comprises a substrate, an intermediate layer and a weather resistant layer which are stacked in sequence; the substrate layer and the intermediate layer are laminated in a bonding manner, the weather resistant layer is coated on the intermediate layer; the substrate layer is a metal layer or a plated composite layer, and the cladding composite layer is a polyester film plated with one of the group consisting of Si, AlOx or SiOy, wherein x is not less than 4/3 and not more than 3/2 and y is more than 0 but and more than 2; the intermediate layer is a polyethylene terephthalate layer; and the weather resistant layer comprises fluorocarbon resin, fluorine-containing organic polysiloxane, cross-linking agent and inorganic filler. The invention further discloses a preparation method of the backing film and a solar battery using the backing film. The solar battery backing film provided by the invention has low vapor transmittance, excellent water isolating property and good interlayer bonding force to avoid interlayer peeling, which can prolong the service life of the battery effectively.
Description
Technical field
The invention belongs to technical field of solar batteries, be specifically related to a kind of solar battery back film and preparation method thereof and solar cell.
Background technology
Solar cell is directly light energy conversion to be become to the device of electric energy by photoelectric effect.It is a kind of novel power supply of following main development, has permanent, spatter property and the large advantage of flexibility three, and its market prospects are wide.Solar energy power generating can occupy the important seat of world energy sources consumption in the near future, not only wants Substitute For Partial conventional energy resource, and will become the main body of world energy supplies.
Solar panel is a laminated construction normally: mainly comprise the layers such as photic zone, glue-line, cell piece, glue-line, notacoria, lamination forms successively.Wherein, the Main Function of solar battery back film is the overall mechanical strength that improves solar panel, can prevent that in addition water vapor permeable from, in sealant, affecting the useful life of cell piece.Characteristics such as so solar battery back film must have insulation (resistance to electrical breakdown), ageing-resistant, weather affects and corrosion-resistant.
At present, existing solar battery back film is produced by multilayer film thermoforming way.Take the most frequently used TPT as example, and it is that independently film is hot-forming by the bonding of glue with three layers of polyvinyl fluoride/PETG/polyvinyl fluorides (being PVF/PET/PVF).
But because the general surface of fluoropolymer can be low, while adopting between PVF and PET hot-press gluing, glue formula is required harsh, and easily cause film bonding strength between layers inadequate, easily cause between layers bubble residual simultaneously, in applying for a long time, gas, salt fog, some pollutants can permeate to centre and corrode along the edge of film, thereby cause thin layer because glue aging causes peeling off between layer and layer, cause solar cell weather, the decline of UV resistant and insulating properties, thereby affect the life-span of solar cell.
And the water vapor transmittance of existing material is high, after long-time use, can have a strong impact on the performance of battery, cause battery to shorten.
Summary of the invention
Technical problem to be solved by this invention is, existing solar battery back film water vapor transmittance is high, and layer is poor with the adhesion of layer, thereby the solar battery back film that a kind of water vapor transmittance is low, layer is good with layer adhesion is provided.
A solar battery back film, it comprises basic unit, intermediate layer and the weathering layer stacking gradually; Between described basic unit and intermediate layer, glue together lamination, described weathering layer is coated on intermediate layer;
Described basic unit is metal level or plates attached composite bed, and the attached composite bed of described plating is on polyester film, to plate attached Si, AlO
xor SiO
yin a kind of, wherein, 4/3≤x≤3/2,0 < y≤2;
Described intermediate layer is PETG layer;
Described weathering layer comprises fluorocarbon resin, fluorine-containing organopolysiloxane, crosslinking agent and inorganic filler.
Second object of the present invention has been to provide a kind of preparation method of above-mentioned solar battery back film.
A preparation method for solar energy back film, it comprises the steps:
(1) after interlayer surfaces is processed, in the one side in intermediate layer, apply slurry and form coating; Described slurry is the mixture of fluorocarbon resin, fluorine-containing organopolysiloxane, inorganic filler, crosslinking agent, solvent;
(2) by coating at 50～150 ℃ of crosslinking curings, form weathering layer;
(3) another side in intermediate layer and basic unit is stacked, then lamination glues together.
The 3rd object of the present invention has been to provide a kind of solar cell.
A solar cell, it comprises photic zone, glue-line, cell piece, glue-line and the notacoria stacking gradually; It is characterized in that, described notacoria is solar battery back film provided by the present invention.
Solar battery back film provided by the present invention, its water vapor transmittance is low, has good water isolating; And layer is good with the adhesion of layer, avoided layer with layer peel off; Both all can effectively improve the useful life of battery.
Accompanying drawing explanation
Fig. 1 is the three-decker schematic diagram of solar battery back film of the present invention.
Fig. 2 is the five-layer structure schematic diagram of solar battery back film of the present invention.
Embodiment
A solar battery back film, it comprises basic unit, intermediate layer and the weathering layer stacking gradually; Between described basic unit and intermediate layer, glue together lamination, described weathering layer is coated on intermediate layer;
Described basic unit is metal level or plates attached composite bed, and the attached composite bed of described plating is that polyester film plates attached Si, AlO
xor SiO
yin a kind of, wherein, 4/3≤x≤3/2,0 < y≤2;
Described intermediate layer is PETG layer;
Described weathering layer comprises fluorocarbon resin, fluorine-containing organopolysiloxane, crosslinking agent and inorganic filler.
The present invention preferably selects the three-decker (can referring to Fig. 1) that stacks gradually basic unit, intermediate layer and weathering layer, or stacks gradually the five-layer structure (can referring to Fig. 2) of weathering layer, intermediate layer, basic unit, intermediate layer and weathering layer.Wherein, in Fig. 1, Fig. 2,1 represents basic unit, and 2 represent intermediate layer, and 3 represent weathering layer.
Wherein, the present invention adopts metal level or plates the mechanical strength that attached composite bed can increase solar battery back film, improves water vapor rejection performance, increases the interlaminar strength with intermediate layer.
The preferred aluminium lamination of metal level or stainless steel layer in the present invention.
Plating attached composite bed is on polyester film, to plate attached Si, AlO
xor SiO
y, wherein plating attached is evaporation known in those skilled in the art and sputter.
The polyester film plating in attached composite bed is also known in those skilled in the art, the preferred PEN of the present invention (PEN) film.
The thickness of basic unit of the present invention is preferably 100～300 μ m.
Wherein, PETG (PET) layer is selected in intermediate layer.PET has good electrical insulating property.
The thickness in intermediate layer of the present invention is 10～50 μ m preferably.
Wherein, weathering layer of the present invention comprises: the composition of fluorocarbon resin, fluorine-containing organopolysiloxane, crosslinking agent, inorganic filler.
Preferably, the quality of weathering layer of take is benchmark, and the content of each component is: fluorocarbon resin 40～60wt%, fluorine-containing organopolysiloxane 2～20wt%, crosslinking agent 5～20wt%, inorganic filler 20～50wt%.
In weathering layer, fluorine-containing organopolysiloxane can be selected from one or more in the siloxanes with following structure:
Preferably, fluorocarbon resin is selected from one or more in polyvinyl fluoride, Kynoar, polytetrafluoroethylene, perfluoroethylene-propylene, chlorotrifluoroethylene-vinyl ether resin, chlorotrifluoroethylene-vinyl ester resin, polyvinylidene fluoride resin, Kynoar-tetrafluoroethene-hexafluoro isopropyl olefine resin.
Crosslinking agent in weathering layer is crosslinking agent known in those skilled in the art.Such as mylar, polyurethane, amino resins, epoxy resin, Lauxite etc.
Preferred isocyanate class crosslinking agent of the present invention, as N75, the N3390 that Beyer Co., Ltd produces, TPA-100 etc.
Inorganic filler in weathering layer, can improve hardness, the resistance to wear of weathering layer, reduces shrinkage, improves stability, surface smoothness, flatness and zero diopter or dumb light etc.
Inorganic filler of the present invention is preferably selected from one or more in titanium dioxide, silicon dioxide, barium sulfate, precipitated calcium carbonate.Wherein, the average grain diameter of inorganic filler is preferably 10-5000nm, more preferably 200～300nm.
In the present invention, the thickness of weathering layer is preferably 10-60 μ m, is preferably 20～40 μ m.
So both can reach solar battery back film to ageing-resistant and barrier, can avoid again notacoria crack performance (which floor thermal coefficient of expansion of weathering layer and other does not mate and easily occurs crack performance).Also can reduce the cost of solar energy back film simultaneously.
Solar battery back film provided by the invention, is directly coated in pet layer by weathering layer, utilizes pet layer and base plate bonding, can adopt the general glue with weatherability, both guarantee adhesion strength, improved the stability of back veneer material, further reduced cost.
On the other hand, the present invention adopts different baseplate materials, the Si of impermeability excellence, AlO
xor SiO
ythe materials such as evaporation polyester film, aluminium and stainless steel, can reduce water vapor transmittance better, have improved the security performance of back veneer material.
A preparation method for solar energy back film, it comprises the steps:
(1) after interlayer surfaces is processed, in the one side in intermediate layer, apply slurry and form coating; Described slurry is the mixture of fluorocarbon resin, fluorine-containing organopolysiloxane, inorganic filler, crosslinking agent, solvent;
(2) by coating at 50～150 ℃ of crosslinking curings, form weathering layer;
(3) another side in intermediate layer and basic unit is stacked, then lamination glues together.
Wherein, surface-treated object is to remove surface impurity and effects on surface modification, generally comprises oil removing, destatics, surface corona is processed or surface plasma processing etc.
Destatic and can adopt neutralizing method known in those skilled in the art, for example, utilize the mode of desk-top ion blower or ion wind gun scanning to remove static.
Surface plasma is processed and is also adopted surface plasma processing method known in the field.
Corona treatment is also known in those skilled in the art.
Intermediate layer adhesive ability after surface treatment increases.
In the present invention, the concrete preparation process of slurry is: take in proportion each raw material, first fluorocarbon resin and fluorine-containing organosiloxane are dissolved in solvent, stir, mixing speed is 50～200 revs/min; In whipping process, by adding pH value conditioning agent, keeping pH value is 7.5～10; Then add inorganic filler, mix and blend, mixing speed is 50～200 revs/min, mixing time is 10～120min, finally adds crosslinking agent, mixes to obtain mixed emulsion; Finally by mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side in surface treated intermediate layer, applying wet-film thickness is 100～200 μ m.
Step (2), by coating at 50～150 ℃ of crosslinking curings.
Wherein, crosslinking curing is known in those skilled in the art, is about between fluorocarbon resin molecule and fluorine-containing organopolysiloxane molecule crosslinked.The general mode that adopts heating.
The present invention is 1～30min preferred heating time.
Step (3) is stacked by the another side in intermediate layer and basic unit, then lamination gummed.
Lamination gummed, for operation known in those skilled in the art, is generally and utilizes organic adhesive that intermediate layer and basic unit are bonded together, and laminated into type.Therefore not to repeat here.
Wherein, organic adhesive is also that ability technical staff is known, adhesives such as polyurethane, acrylate, epoxy resin.
A solar cell, it comprises photic zone, glue-line, cell piece, glue-line and the notacoria stacking gradually; Wherein, described notacoria solar battery back film provided by the present invention.
Wherein, photic zone, glue-line, cell piece are known in those skilled in the art.At this, do not repeat.
The modes of emplacement of notacoria is also known in those skilled in the art, and for example, when solar battery back film is trilamellar membrane, wherein weathering layer is exposed in air, and basic unit contacts bonding with glue-line.Other are repeat no longer more.
Below in conjunction with specific embodiment, the invention will be further elaborated.
Embodiment 1
1. the thick PET film of 50 μ m is carried out to oil removing, surface corona processing successively.
By 25g chlorotrifluoroethylene-alkyl vinyl ester resin (FEVE), 10g fluorosilicone is dissolved in 40g propylene glycol monomethyl ether, with the speed of 150 revs/min, stir, after stirring 30min, add 15g titanium dioxide, mix and blend, mixing speed is 100 revs/min, mixing time is 20min, add again 5g trimerization isocyanide ester N3375, mix to obtain mixed emulsion.By mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side through surface treatment PET material with coating machine, and applying wet-film thickness is 100 μ m.
2. more coated PET is put into heating furnace and heat, at 80 ℃, heat 30min, form weathering layer.
3. get the pen film of surperficial evaporation Si (Si bed thickness 2 μ m) as basic unit, the thick 250 μ m of basic unit.With coating machine, on steaming coating surface, apply epoxy resin solution, then put into drying box dry, so that the solvent evaporates in epoxy resin solution.
The another side in intermediate layer and basic unit is stacked, according to being followed successively by from top to bottom: the mode of weathering layer/intermediate layer/basic unit is stacked, put into plasticator hot pressing compound.
Make solar battery back film, be denoted as A1.
Embodiment 2
1. the thick PET film of 50 μ m is carried out to oil removing, surface corona processing successively.
By 25g chlorotrifluoroethylene-ethylene-vinyl ether resin (FEVE), 8g fluorosilicone is dissolved in 40g butyl acetate, with the speed of 150 revs/min, stir, after stirring 30min, add 15g titanium dioxide, mix and blend, mixing speed is 100 revs/min, mixing time is 30min, add again 6gTPA-100, mix to obtain mixed emulsion.By mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side through surface treatment PET material with coating machine, and applying wet-film thickness is 80 μ m.
2. more coated PET is put into heating furnace and heat, at 80 ℃, heat 30min.
3. get the pen film of two sides evaporation Si (Si bed thickness 2 μ m) as basic unit, the thick 210 μ m of basic unit.With coating machine, on basic unit's layer two sides, all apply epoxy resin solution, then put into drying box dry, so that the solvent evaporates in epoxy resin solution.
The another side in basic unit and 2 intermediate layers is stacked, according to being followed successively by from top to bottom: the mode of weathering layer/intermediate layer/basic unit/intermediate layer/weathering layer is stacked, put into plasticator hot pressing compound.
Gained solar battery back film, is denoted as A2.
Embodiment 3
1. the thick PET film of 50 μ m is carried out to oil removing, surface corona processing successively.
By 25g chlorotrifluoroethylene-ethylene-vinyl ether resin (FEVE), 5g fluorosilicone is dissolved in 40g butyl acetate, with the speed of 150 revs/min, stir, after stirring 30min, add 15g titanium dioxide, mix and blend, mixing speed is 100 revs/min, mixing time is 20min, add again 5g N75, mix to obtain mixed emulsion.By mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side through surface treatment PET material with coating machine, and applying wet-film thickness is 100 μ m.
2. more coated PET is put into heating furnace and heat, at 80 ℃, heat 30min.
3. use coating machine all to apply epoxy resin solution on stainless steel foil basic unit (200 μ m) two sides, then put into drying box dry, so that the solvent evaporates in epoxy resin solution.
The another side in basic unit and 2 intermediate layers is stacked, according to being followed successively by from top to bottom: the mode of weathering layer/intermediate layer/basic unit/intermediate layer/weathering layer is stacked, put into plasticator hot pressing compound.
Gained solar battery back film, is denoted as A3.
Embodiment 4
1. the thick PET film of 30 μ m is carried out to oil removing, surface corona processing successively.
By 40g chlorotrifluoroethylene-ethylene-vinyl ether resin (FEVE), 10g fluorosilicone is dissolved in 40g butyl acetate, with the speed of 150 revs/min, stir, after stirring 30min, add 15g titanium dioxide, mix and blend, mixing speed is 100 revs/min, mixing time is 20min, add again the many isocyanide esters of 9g, mix to obtain mixed emulsion.By mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side through surface treatment PET material with coating machine, and applying wet-film thickness is 100 μ m.
2. more coated PET is put into heating furnace and heat, at 80 ℃, heat 30min.
3. get the pen film of two sides evaporation Si (Si bed thickness 2 μ m) as basic unit, the thick 300 μ m of basic unit.With coating machine, in basic unit, apply polyurethane solutions, then put into drying box dry, so that the solvent evaporates in polyurethane solutions.
The another side in basic unit and 2 intermediate layers is stacked, according to being followed successively by from top to bottom: the mode of weathering layer/intermediate layer/basic unit/intermediate layer/weathering layer is stacked, put into plasticator hot pressing compound.
Gained solar battery back film, is denoted as A4.
Embodiment 5
1. the thick PET film of 50 μ m is carried out to oil removing, surface corona processing successively.
By 25g chlorotrifluoroethylene-ethylene-vinyl ether resin (FEVE), 10g fluorosilicone is dissolved in 40g butyl acetate, with the speed of 150 revs/min, stir, after stirring 30min, add 15g titanium dioxide, mix and blend, mixing speed is 100 revs/min, mixing time is 20min, obtain mixed emulsion, then add the many isocyanide esters of 6g.By mixed emulsion sanded, be less than 5 μ m to fineness, form slurry.
The slurry making is coated in the one side through surface treatment PET material with coating machine, and applying wet-film thickness is 100 μ m.
2. more coated PET is put into heating furnace and heat, at 80 ℃, heat 30min.
3. get two sides evaporation SiO
2(SiO
2bed thickness 2 μ m) pen film is as basic unit, the thick 250 μ m of basic unit.With coating machine, in basic unit, apply epoxy resin solution, then put into drying box dry, so that the solvent evaporates in epoxy resin solution.
The another side in basic unit and 2 intermediate layers is stacked, according to being followed successively by from top to bottom: the mode of weathering layer/intermediate layer/basic unit/intermediate layer/weathering layer is stacked, put into plasticator hot pressing compound.
Gained solar battery back film, is denoted as A5.
Comparative example 1
The Kynoar that is 30 μ m by two thickness (PVF) film is one side corona treatment respectively.
With spreader at two PVF film processing layer surface-coated epoxy resin solutions after treatment, the PVF film of epoxy resin will be covered with, put into drying box, baking temperature 80 degree, drying time 1h, so that the solvent evaporates in epoxy resin, by being covered with PVF film, the PETG film (PET) of epoxy resin, the PVF film that is covered with epoxy resin stacks successively, wherein epoxy resin layer is between PVF film and PET film, the PVF/PET/PVF trilamellar membrane stacking is put into plasticator hot pressing compound, obtaining gross thickness is the sample TPT of 340 μ m.
Be denoted as AC1.
Performance test:
Testing vapor transmission: carry out test parameter by ASTM F-1249: 38 ℃ of temperature, humidity: 90%, time 24h.The results are shown in Table 1.
Adhesive force test: draw the square lattice of 100 1 millimeter * 1 millimeter by hundred graticule mesh at coating surface layer, smooth being bonded on grid of adhesive tape that is 600 by the model that Minnesota Mining and Manufacturing Company produces, do not stay a space, then with prestissimo, vertically uncover, observe cut edge and have or not and come off.If the amount of coming off is 5B between 0～5 area %, between 5～10 area %, be 4B, between 10～20 area %, be 3B, between 20～30 area %, be 2B, between 30～50 area %, be B, more than 50 area %, be 0B, test result is in Table 1.
Mechanical strength and elongation at break test: carrying out according to ASTM D-882 standard, detected materials is made to the rectangle sample of 10mm * 150mm size, is 20+2 ℃ in temperature, under the condition that humidity is 65 ± 5%, stretches with the speed of 50mm/min.Survey its mechanical strength and elongation at break.The results are shown in Table 1.
Interlaminar strength test:
According to IPC-TM650 standard, carry out, material is made into the sample (2.5cm*20cm) of definite shape size according to test request.Sample free end strip off certain length, sample holder, take angle as 180 °, and speed is 0.2m/min, and effectively strip length is 12.5cm, tests its peel strength.The results are shown in Table 1.
Table 1
| Sample | Thickness (μ m) | Coating adhesion | Water vapor transmittance (g/m 2.d) | Interlaminar strength (N/cm) | Mechanical strength (N/cm) | Elongation at break (%) |
| A1 | 350 | 5B | 1.3 | 9 | 400 | 80 |
| A2 | 390 | 5B | 0.5 | 8 | 350 | 100 |
| A3 | 410 | 5B | 0.1 | 8 | 400 | 50 |
| A4 | 420 | 5B | 0.6 | 12 | 344 | 100 |
| A5 | 460 | 5B | 0.3 | 13 | 370 | 70 |
| AC1 | 340 | 3B | 2.5 | 6 | 350 | 115 |
As can be seen from Table 1, the water vapor transmittance of the solar battery back film of embodiment of the present invention 1-5 has had significantly reduction, shows that the water-resisting property of solar battery back film is excellent, thereby can extend the life-span of solar cell.In addition, also to find out that the adhesive force on its top layer is significantly improved.Interlaminar strength, mechanical strength and elongation at break basic with comparative example maintenance par, can meet the demand of solar cell.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a solar battery back film, it comprises basic unit, intermediate layer and the weathering layer stacking gradually; Between described basic unit and intermediate layer, glue together lamination, described weathering layer is coated on intermediate layer;
Described basic unit is metal level or plates attached composite bed, and the attached composite bed of described plating is on polyester film, to plate attached Si, AlO
xor SiO
yin a kind of, wherein, 4/3≤x≤3/2,0<y≤2;
Described intermediate layer is PETG layer;
Described weathering layer comprises fluorocarbon resin, fluorine-containing organopolysiloxane, crosslinking agent and inorganic filler;
Described fluorine-containing organopolysiloxane is selected from one or more in the siloxanes with following structure:
Described weathering layer comprises following component, with percentage by weight, represents: fluorocarbon resin 40～60wt%, fluorine-containing organopolysiloxane 2～20wt%, crosslinking agent 5～20wt%, inorganic filler 20～50wt%.
2. solar battery back film according to claim 1, is characterized in that: described solar battery back film is the five-layer structure of the weathering layer that stacks gradually, intermediate layer, basic unit, intermediate layer, weathering layer.
3. solar battery back film according to claim 1 and 2, is characterized in that: the thickness in described intermediate layer is 10～50 μ m.
4. solar battery back film according to claim 1 and 2, is characterized in that: the thickness of described weathering layer is 10～60 μ m.
5. solar battery back film according to claim 1 and 2, is characterized in that: the thickness of described basic unit is 100～300 μ m.
6. solar battery back film according to claim 1 and 2, is characterized in that: described fluorocarbon resin is selected from one or more in polyvinyl fluoride, Kynoar, polytetrafluoroethylene, perfluoroethylene-propylene, chlorotrifluoroethylene-vinyl ether resin, chlorotrifluoroethylene-vinyl ester resin, polyvinylidene fluoride resin, Kynoar-tetrafluoroethene-hexafluoro isopropyl olefine resin.
7. a preparation method for solar battery back film claimed in claim 1, it comprises the steps:
(1) after interlayer surfaces is processed, in the one side in intermediate layer, apply slurry and form coating; Described slurry is the mixture of fluorocarbon resin, fluorine-containing organopolysiloxane, inorganic filler, crosslinking agent, solvent;
(2) by coating at 50～150 ℃ of crosslinking curings, form weathering layer;
(3) another side in intermediate layer and basic unit is stacked, then lamination glues together.
8. a solar cell, it comprises photic zone, glue-line, cell piece, glue-line and the notacoria stacking gradually; It is characterized in that, described notacoria is the solar battery back film described in claim 1～6 any one.
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| CN102569456A (en) * | 2011-12-31 | 2012-07-11 | 苏州幸福新能源科技有限责任公司 | E-film for solar back panel |
| CN105576057B (en) * | 2014-10-31 | 2018-06-26 | 比亚迪股份有限公司 | Solar cell module and preparation method thereof |
| EP3185310B1 (en) * | 2015-12-23 | 2019-02-20 | Agfa-Gevaert | A backsheet for a solar cell module |
| CN107611202A (en) * | 2017-09-30 | 2018-01-19 | 苏州携创新能源科技有限公司 | A kind of photovoltaic module |
| CN108198886A (en) * | 2018-01-19 | 2018-06-22 | 中天科技精密材料有限公司 | A kind of corrosion resistant PVDF thin film of high reflectance and preparation method thereof, application |
| CN108493279B (en) * | 2018-04-10 | 2021-04-02 | 苏州中来光伏新材股份有限公司 | Hydrophobic water-resistant solar cell back plate based on coating technology and preparation method |
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| CN201199524Y (en) * | 2008-08-29 | 2009-02-25 | 苏州中来太阳能材料技术有限公司 | Backing film for high cohesiveness solar battery |
| CN101359695A (en) * | 2008-09-02 | 2009-02-04 | 中国乐凯胶片集团公司 | Back plate of solar cell |
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| Publication number | Publication date |
|---|---|
| CN102082192A (en) | 2011-06-01 |
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