CN106129258A - Flexible solar battery encapsulation multi-layer compound film and application thereof - Google Patents
Flexible solar battery encapsulation multi-layer compound film and application thereof Download PDFInfo
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- CN106129258A CN106129258A CN201610767680.9A CN201610767680A CN106129258A CN 106129258 A CN106129258 A CN 106129258A CN 201610767680 A CN201610767680 A CN 201610767680A CN 106129258 A CN106129258 A CN 106129258A
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 37
- 238000005538 encapsulation Methods 0.000 title claims abstract description 20
- 239000012785 packaging film Substances 0.000 claims abstract description 38
- 229920006280 packaging film Polymers 0.000 claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 28
- 238000002834 transmittance Methods 0.000 claims abstract description 25
- 230000037452 priming Effects 0.000 claims abstract description 18
- 239000010408 film Substances 0.000 claims description 105
- 239000010409 thin film Substances 0.000 claims description 16
- 238000003475 lamination Methods 0.000 claims description 15
- 238000010030 laminating Methods 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 10
- 229920001577 copolymer Polymers 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 claims description 5
- 125000001153 fluoro group Chemical group F* 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 150000003377 silicon compounds Chemical class 0.000 claims description 4
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 3
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 3
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 229920001038 ethylene copolymer Polymers 0.000 claims 1
- 229920006254 polymer film Polymers 0.000 claims 1
- 230000004888 barrier function Effects 0.000 abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 89
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- 238000000034 method Methods 0.000 description 20
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- 239000007789 gas Substances 0.000 description 15
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- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920002799 BoPET Polymers 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
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- 238000004544 sputter deposition Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000005041 Mylar™ Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 210000002469 basement membrane Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
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- 238000007701 flash-distillation Methods 0.000 description 1
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- 229940073561 hexamethyldisiloxane Drugs 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/88—Passivation; Containers; Encapsulations
-
- 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
- Y02E10/549—Organic PV cells
Abstract
The present invention provides a kind of multi-layer compound film for flexible solar battery encapsulation and application thereof; described laminated film is made up of packaging film and protective film; described packaging film light transmittance is 80%～95%; it is made up of the base membrane layer set gradually, priming coat and gas-barrier layer; base membrane layer thickness is 10 μm～150 μm, light transmittance more than 85%；Described protective film is made up of base material and the upper release layer formed thereof.The packaging film light weight of the present invention, the 1/4 of the most existing conventional encapsulating film product, be convenient for carrying use and subassembly product transport；The utilization rate of packaging film light is high so that the generating efficiency of assembly improves；Because of good to water vapor barrier property with gas-barrier layer, it is possible to meet solaode routine use demand.
Description
Technical field
The present invention provides solar energy packaging film, a kind of barrier film for flexible solar battery encapsulation.
Background technology
Along with the development of solar battery technology with reach its maturity, and the understanding that people are to new forms of energy, solaode
It is not limited to conventional solar power station, and has increasingly been widely used among daily life.BIPV
(BIPV), all kinds of products for civilian use such as Vehicular solar battery, portable type solar energy charger, solar tent, solar energy knapsack
Fall over each other to emerge in large numbers.
Compared with conventional solar cell assembly, the solar battery product of daily use require lower quality with
And pliable performance.But traditional components encapsulation glass is difficult to meet emerging market for encapsulating material lightweight and pliable
Demand.
Make a general survey of existing high-barrier encapsulation technology, how prepare vapor water barriers layer using mylar as base material thereon,
Then make through MULTILAYER COMPOSITE, cause encapsulating film thickness big and bendable folding endurance is poor.After component package, soft folding endurance is poor and is not easy to
Carry, install and transport.And can be used for easy the to be soft folding base material of encapsulation, on the one hand there are no high flexibility high-barrier packaging film at present
Product occurs, also there are no correlation technique open；On the other hand it is difficult to sprawl due to its softness, holds very much during component package
It is easily formed defect, causes product yields low.
Summary of the invention
The present invention seeks to the deficiency for current high-barrier packaging film material, it is provided that a kind of flexible solar battery envelope
Dress multi-layer compound film and application thereof, this multi-layer compound film has barrier height, thickness is thin, pliable, adapt to lamination work
Skill is easy to the features such as production line encapsulation process, is particularly well-suited on front side of flexible solar battery pack encapsulate.
The object of the present invention is achieved like this:
A kind of multi-layer compound film for flexible solar battery encapsulation, is made up of packaging film and protective film, institute
Stating packaging film light transmittance is 80%～95%, is made up of the base membrane layer set gradually, priming coat and gas-barrier layer, base membrane layer
Thickness is 10 μm～150 μm, light transmittance more than 85%；Described protective film is made up of base material and the upper release layer formed thereof.
Above-mentioned multi-layer compound film, the peeling force between described packaging film and protective film is 3g/25mm～30g/
25mm, preferably peeling force are 5g/25mm～15g/25mm.
Above-mentioned multi-layer compound film, the moisture-vapor transmission of described packaging film is 1 × 10-5g/m2Day～0.1g/
m2·day。
Above-mentioned multi-layer compound film, described base membrane layer thickness is 25 μm～75 μm, light transmittance more than 90%.
Above-mentioned multi-layer compound film, described protective film thickness is 50 μm～250 μm, and preferred thickness is 50 μm～150 μm.
Above-mentioned multi-layer compound film, the base membrane layer of described packaging film is fluoro-containing copolymer film or Kapton.
Above-mentioned multi-layer compound film, described fluoro-containing copolymer film is ethylene-tetrafluoroethylene copolymer thin film, perfluoroethylene
Any one in propylene copolymer film, chloro perfluoroethylene copolymer or Kapton.
Above-mentioned multi-layer compound film, the gas-barrier layer of described packaging film is oxygen-containing, the carbon of thickness 50nm～1500nm
Or the silicon compound layer of nitrogen.
Another object of the present invention is achieved in that
The application of a kind of flexible solar battery encapsulation multi-layer compound film, its way is: first by MULTILAYER COMPOSITE
Thin film is directly used in solar module encapsulation lamination, laminating temperature 120 DEG C～160 DEG C, lamination times 5min～60min；
After laminating technology completes, remove outermost protective film.
Beneficial effect:
The most compared with prior art, the multi-layer compound film of the present invention is made up of packaging film and protective film, thinner package
Film is 10 μm～the base membrane layer of 150 μm by light transmittance more than 85%, thickness, the priming coat that it is formed and gas-barrier layer group
Become；Because of base membrane layer thinner thickness so as to get multi-layer compound film and packaging film light weight, only the most existing conventional encapsulating film
The 1/4 of product, is convenient for carrying use and subassembly product transports；Because the light transmittance of base membrane layer is high, preferably control the component of priming coat
Keeping high transmission rate with thickness, the utilization rate of the packaging film light obtained is high so that the generating efficiency of assembly improves；Because of with
Gas-barrier layer is good to water vapor barrier property, it is possible to meet solaode routine use demand.
2. the present invention uses packaging film and the multi-layer compound film of protective film composition, in multi-layer compound film structure
Introduce strippable protective film, encapsulation process plays certain supporting role, thick by packaging film and protective film
That spends is preferred, successfully solves the problem that flexible film material easily occurs defect in encapsulation process, it is possible to reach encapsulation and add
Requirement in work, significantly improves subassembly product yields.
3. the present invention uses the multi-layer compound film of packaging film and protective film, introduces in multi-layer compound film structure
Strippable protecting film, plays certain supporting role in encapsulation process, and the base membrane layer of packaging film is selected the most frivolous, soft
Soft thin film, priming coat and gas-barrier layer are flexible coating or thin film, and the packaging film obtained has the transmitance, resistance to of excellence concurrently
Bending property, barrier and weatherability etc..
The gas-barrier layer of packaging film the most of the present invention is oxygen-containing, carbon or the silicon compound of nitrogen of thickness 50nm～1500nm
Layer, excellent for gas barrier property and there is good bending performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of present invention packaging film used for solar batteries.
In figure, each label is expressed as: 1-base material, 2-packaging film, 3-base membrane layer, 4-priming coat, 5-gas barrier
Layer, 6-release layer, 7-protective film.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail.
Being made up of protective film and packaging film of the solar cell package multi-layer compound film of the present invention, wherein encapsulate
Thin film is by base membrane layer, priming coat and gas-barrier layer composition.
The packaging film of the present invention can be applied to flexible CIGS solar battery, thin crystal silicon solar batteries, You Jiju
Encapsulate on front side of the multiple flexible solar batteries such as compound solaode.
Protective film base material
As the protective film base material of the present invention, preferred thermoplastic macromolecule membrane.Preferably polyethylene terephthalate
Ester (PET), the homopolymer of mylar or ethylene, propylene, the butylene etc. such as polyethylene glycol 2，6-naphthalene dicarboxylate or copolymer etc.
Polyolefin film, or nylon 6, nylon66 fiber, nylon 12, the Polyamide resin film such as copolymer nylon.Can be that unstretching film also may be used
To be stretched film.Furthermore it is also possible to carry out lamination with other plastic film material.
In terms of the mechanical strength of material, flexibility, purposes etc. and the requirement to multi-layer compound film of the encapsulation process process
From the standpoint of, it is usually chosen in the protective film base material of 25 μm～250 μ m-thick, preferred substrates thickness 50 μm～150 μm.
As the protective film of the present invention, it is coated with known organic silica gel or acrylic glue conduct in thin-film material side
Release layer, considers from the actually used mode of successive process technique and material, is 3g/25mm～30g/25mm from row layer peeling force,
Preferably peeling force 5g/25mm～15g/25mm.
Packaging film
Base membrane layer
In order to obtain transparent packaging film, meanwhile, have the feature of weatherability, pliability and the light weight of excellence concurrently, this
The preferred light transmittance of base membrane layer in invention is the thin film of more than 85%.Containing of the preferred high transmission rate of base membrane layer and excellent weathering resistance
Fluorine film or Kapton, most preferably ethylene-tetrafluoroethylene copolymer (ETFE) thin film, fluorinated ethylene propylene copolymer
(FEP) thin film, chloro perfluoroethylene copolymer (PCTFE) and polyimides (PI) thin film.Base membrane layer thickness is in 10 μm～150 μm
In the range of select, preferably 25 μm～75 μm.
Priming coat
In the present invention, for improve basal lamina material surface smoothness and improve between gas-barrier layer and base membrane layer close
Conjunction property, preferably painting bottom coating between base membrane layer and gas-barrier layer.From the standpoint of productivity, can alone or in combination two
Plant polyester resin, polyurethane based resin, acrylic resin, nitrocellulose resinoid known to above use, have
Machine silicon resinoid, vinyl alcohol resin etc..
The thickness of priming coat is generally selected 0.2 μm～5 μm, wherein preferred undercoat thickness 0.5 μm～2 μm.
Gas-barrier layer
In the present invention, as gas barrier layer material, preferably comprise the silicon compound of carbon, oxygen or nitrogen, the most excellent
The choosing silicon oxide containing a small amount of carbon doping.
As gas-barrier layer, thickness is chosen as 50nm～1500nm, but barrier layer easily produces under the conditions of thicker and splits
Stricture of vagina causes barrier to decline, and when film layer is thicker simultaneously, light transmittance reduces, therefore preferred 50nm～500nm of gas barrier layer thickness,
Particularly preferably 100nm～300nm.
For have simultaneously excellence bending and gas barrier property, gas-barrier layer by multilamellar carbon doping content in
The Si oxide monolayer composition of stepped change.Barrier layer is by interior outside near priming coat side, and the content of doping carbon is progressively
Raise.The number of plies of gas-barrier layer can select 2～9 layers, it is considered to the simplification of actual production technique and the optimization of properties of product, excellent
Selecting the gas barrier number of plies is 2～5 layers, the most particularly preferred 3 layers.
Gas-barrier layer film build method
In the present invention, gas-barrier layer can pass through PECVD plated film, sputtering or coating method and realize, and considers into
Membrane process complexity and quality of forming film, preferably PECVD film forming.
PECVD film forming
Process conditions as the PECVD that the present invention uses, it is only necessary to according to circumstances the most selected, preferred film forming
Power bracket 0.5kW～5kW, plated film pressure range 0.5Pa～5Pa, plated film supply frequency 10kHz～120kHz, plated film speed
0.5m/min～10m/min.
For obtaining more excellent performance, gas-barrier layer is combined by multicoating.The film forming power root of every layer of coating
Being adjusted according to product design, film forming power the most constantly increases in preferred scope.Particularly preferred 3 layers of coating preferred
Film forming power is respectively 1kW～2kW, 1.5～2.5kW, 2kW～3kW.
Spatter film forming
The spatter film forming mode used as the present invention, can select known spatter film forming technology according to performance requirement,
For solving the problem that monolayer sputtering barrier layer easily ftractures, it is possible to use different targets carry out multilamellar sputtering, or spatter in multilamellar
The coating or coating using the known manner such as spin coating, flash distillation to obtain is added between the barrier layer penetrated.
Coating film forming
The coating film forming mode used as the present invention, scraper for coating, nick version can be selected to be coated with according to practical situation,
Bar seam coating or other coating method, be wherein preferably used the coating of nick version and bar seam coating.It is coated with the solidification work for film forming
Skill has no particular limits.
The application process of multi-layer compound film
The multi-layer compound film using method of the present invention is similar with general packaging film, it is possible to use lamination glued membrane or coating
The solar cell package thin film manner of adhesive carries out component package.Examine from mating with existing photovoltaic module manufacturing enterprise equipment
Consider, lamination glued membrane is preferably used and carries out component package.The glued membrane used can be polyolefin or ethylene-vinyl acetate copolymer
In any one.During laminating packaging, first solar cell package multi-layer compound film protective film is outside, from top to bottom presses
Stack according to solar cell package thin film, glued membrane, solar battery sheet, glued membrane, the order of backboard；Then laminating machine is used
It is laminated, controls laminating temperature 120 DEG C～160 DEG C, lamination times 5min～60min；After laminating technology completes, remove
The protective film in outside, can obtain packaged solar module.
Embodiment
Below by some embodiments, the present invention made more specific description, but embodiments of the present invention are not by these
The restriction of embodiment.
Embodiment 1
As base membrane layer material, etfe film (the Asahi Glass 50N selecting thickness 50 μm, light transmittance to be 92%
1250DSC), the micro-gravure coater of aboveground metal is used to be coated with acrylate compounds priming coat in its surface
(CN201110133880.6), unwinding tension 50N～150N, Coating Speed 10～15m/min, roller speed ratio 75%, it is dried road temperature
Degree controls 40 DEG C/40 DEG C/60 DEG C/80 DEG C/60 DEG C, winding tension 100N～150N.Ultimately form the priming coat of thickness 1.5 μm.
PECVD coating apparatus is used to become film pressure 1.5Pa, supply frequency 90kHz, use hexamethyl disiloxane
And oxygen is as reaction raw materials gas, two gas flow ratio HMDSO:O (HMDSO)2=10:1, speed 2m/min, divide and carry out for 3 times
Plated film, the power that three times use is respectively 1.5kW/2.2kW/2.6kW.Obtain the gas-barrier layer of thickness 300nm.
Protective film material is by release layer (DOW CORNING) group of the organosilicon adhesive of coating in 100 μm PET base material and its
Become, peeling force 7g/25mm.Use cutting machine that supporting layer and the ETFE base material being coated with gas-barrier layer are combined, laminating
Power 3kg, laminate pressure 5kg, speed 10m/min.Finally obtain the flexible solar battery packaging film of structure as shown in Figure 1
Product.Moisture permeability and light transmittance for product characterize, and result is as shown in table 1.
Embodiment 2
The other the same as in Example 1, base material selects thickness 25 μm, the etfe film of light transmittance 91%, priming coat and gas barrier
The preparation technology of layer is constant, and moisture permeability and the light transmittance properties of final products are as shown in table 1.
Embodiment 3
The other the same as in Example 1, base material selects thickness 75 μm, the PI thin film of light transmittance 85%, priming coat and gas-barrier layer
Preparation technology constant, moisture permeability and the light transmittance properties of final products are as shown in table 1.
Embodiment 4
The other the same as in Example 1, protecting film use peeling force 15g/25mm, the PET film of thickness 150 μm, final products
Moisture permeability and light transmittance properties are as shown in table 1.
Embodiment 5
The other the same as in Example 1, uses peeling force 3g/25mm, and base material is the protective film of the PET film of thickness 50 μm,
Moisture permeability and the light transmittance properties of finished product are as shown in table 1.
Embodiment the effect list:
Comparative example 1
Do not use priming coat, directly on ETFE base membrane layer, be coated with gas-barrier layer, in addition, similarly to Example 1
Operation.Gained composite membrane carrying out test characterize, result is as shown in table 1.
Comparative example 2
Do not carry out plated film, directly the ETFE base material with priming coat is combined with supporting layer, in addition, with embodiment 1
Same operation.Testing composite membrane, result is as shown in table 1.
Comparative example 3
Intermediate products after plated film are not combined with protective film, in addition, operate similarly to Example 1.To unprotect
The product of thin film carries out performance test, and result is as shown in table 1.Meanwhile, embodiment 1 is used same money with comparative example 3 products obtained therefrom
Laminating machine carries out lamination contrast, and specification and the technique of lamination print are as follows: lamination print size 20cm × 20cm, use Lekai system
Make 200 μm EVA adhesive film, and same size solar cell backboard, 150 μm CIGS cell pieces.Laminating temperature 150 DEG C, evacuation
Preheating 30min, after lamination, Comparative result is as shown in table 2.
Comparative example 4
Using conventional PET base material to carry out barrier layer plated film, PET thickness 100 μm, coating process is same as in Example 1.To thin
Film properties is tested, and result is as shown in table 1.
Effect and method of testing
Moisture-vapor transmission
MOCON is used according to GB/T 21529 " the mensuration electrolytic sensors method of plastic sheeting and thin slice moisture-vapor transmission "
Company's AQUATRAN Model 2MG equipment is measured.
Light transmittance
According to the method for regulation in GB/T 2410 " transparent plastic light transmittance and the mensuration of mist degree ", haze meter is used to carry out
Measure.
Table 1
Note: all remove supporting layer when test permeability rate is with light transmittance, consistent with actually used situation to ensure.
Table 2
As seen from the above table, the present invention is to have areal density, excellent gas barrier property, optical transmittance and little curved
The packaging film that the performances such as bilge radius have concurrently, it is possible to meet the demand of lamination of solar battery components technique, is particularly well-suited to soft
Property solar module encapsulation.
On the other hand, comparative example 1 gas barrier property without priming coat is decreased obviously, it is impossible to meet the flexible sun
The demand that energy battery component intercepts for aqueous vapor；And without the comparative example 2 of gas-barrier layer, there is the highest steam and pass through
Rate, illustrates that in this programme, substrate layer and priming coat are the lowest for gas barrier contribution, and gas barrier property is derived mainly from gas resistance
Interlayer；Although have gas barrier property and the optical transmittance meeting photovoltaic module demand without the structure of protective film,
But in actual lamination process, have the most substantial amounts of wrinkle of obvious cissing and obvious bubble product, it is impossible to meet assembly
The demand of laminating technology.
Claims (10)
1. the multi-layer compound film for flexible solar battery encapsulation, it is characterised in that thin by packaging film and protection
Film is constituted, and described packaging film light transmittance is 80%～95%, by the base membrane layer set gradually, priming coat and gas-barrier layer group
Becoming, base membrane layer thickness is 10 μm～150 μm, light transmittance more than 85%；Described protective film by base material and upper formed release
Layer is constituted.
Multi-layer compound film the most according to claim 1, it is characterised in that the stripping between described packaging film and protective film
It is 3g/25mm～30g/25mm from power.
Multi-layer compound film the most according to claim 1, it is characterised in that the moisture-vapor transmission of described packaging film is 1
×10-5g/m2Day～0.1g/m2·day。
Multi-layer compound film the most according to claim 1, it is characterised in that the base membrane layer thickness of described packaging film is 25 μm
～75 μm, light transmittance more than 90%.
Multi-layer compound film the most according to claim 1, it is characterised in that described protective film base material thickness be 50 μm～
250μm。
Multi-layer compound film the most according to claim 1, it is characterised in that described protective film base material thickness be 50 μm～
150μm。
7. according to multi-layer compound film described in claim 1 or 4, it is characterised in that the base membrane layer of described packaging film is fluorine-containing
Thin polymer film or Kapton.
Multi-layer compound film the most according to claim 7, it is characterised in that described fluoro-containing copolymer film is ethylene-tetrafluoro
In ethylene copolymer films, fluorinated ethylene propylene copolymer thin film, chloro perfluoroethylene copolymer or Kapton
Any one.
Multi-layer compound film the most according to claim 1, it is characterised in that the gas-barrier layer of described packaging film is thickness
Oxygen-containing, the carbon of 50nm～1500nm or the silicon compound layer of nitrogen.
10. according to the application of flexible solar battery encapsulation multi-layer compound film described in claim 1-6, it is characterised in that:
It is directly used in solar module encapsulation lamination, laminating temperature 120 DEG C～160 DEG C, lamination first by multi-layer compound film
Time 5min～60min；After laminating technology completes, remove outermost protective film.
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