CN107984842A - A kind of fluorine film, backboard and photovoltaic module - Google Patents

A kind of fluorine film, backboard and photovoltaic module Download PDF

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Publication number
CN107984842A
CN107984842A CN201711185047.XA CN201711185047A CN107984842A CN 107984842 A CN107984842 A CN 107984842A CN 201711185047 A CN201711185047 A CN 201711185047A CN 107984842 A CN107984842 A CN 107984842A
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China
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layer
resin
backboard
fluorine film
content
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CN201711185047.XA
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Chinese (zh)
Inventor
孙影
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Taizhou Longi Solar Technology Co Ltd
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Taizhou Longi Solar Technology Co Ltd
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Priority to CN201711185047.XA priority Critical patent/CN107984842A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • 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
    • H01L31/049—Protective back sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/71—Resistive to light or to UV
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/12—Photovoltaic modules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The present invention relates to solar components design field, a kind of fluorine film, backboard and photovoltaic module are disclosed, fluorine film includes first layer, the second layer and third layer, first layer and third layer are separately positioned on the upper and lower surface of the second layer, first layer adulterates the first resin to be formed for PTFE resin, PVDF resins, plasticizer and light stabilizer, the second resin that the material of the second layer forms for PVDF resins with polyester resin blending, third layer adulterate the 3rd resin to be formed for PTFE resin, PVDF resins, plasticizer, light stabilizer and surfactant.The fluorine film has the characteristics that uvioresistant ability is excellent, the backboard prepared by the fluorine film has the characteristics that the characteristics of excellent uvioresistant ability and scratch resistant and high light transmittance conservation rate, and the backboard to be used for the encapsulation of p-type double-side cell, it can realize the light-weighted design of Double-sided battery pack, improve the initial power of Double-sided battery pack and lasting generated energy.

Description

A kind of fluorine film, backboard and photovoltaic module
Technical field
The present invention relates to solar components design field, and in particular to a kind of fluorine film, backboard and photovoltaic module.
Background technology
Photovoltaic (PV) industry is constantly lifted after major transformation, photovoltaic conversion efficiency, and price continues to decline.Some areas are Reach par online, to keep this trend, many producers have done substantial amounts of work in cell piece technical elements, developed at present Double-side cell greatly improves the generating efficiency of component, and double-side cell PID phenomenons are more serious than conventional single side battery, at present component factory It is most of that double-side cell is made into solar double-glass assemblies, and the anti-PID of Double-sided battery pack is realized with polyolefin encapsulation, but double glass Lightweight packages are big, add production cost, cost of transportation and installation cost, so there is many producers to carry out light weight to component at present The design of change, is mainly the following scheme：(1) remove to module frame loss of weight or directly frame, but remove water after frame Vapour is easily invaded from glass edge, and failure risk is big；(2) single glass is carried out to double-side cell to encapsulate, but glass sheet before component, after Backboard plate, weight loss effect unobvious；(3) using two-side transparent backboard or high saturating resin, such as ETFE/ carbonic esters, such a method The weight of component 60%-70% can be substantially reduced, thoroughly realizes the lightweight of component, but due to the transparent back of the body currently on the market The mass defect of plate, can not meet the requirement of the various adverse circumstances of outdoor long-time service, generally existing uvioresistant energy force difference, no The defects of rub resistance, relatively low light transmittance conservation rate, cause component outdoor generating total amount not high.
The content of the invention
To solve problems of the prior art, it is an object of the invention to provide a kind of fluorine film, backboard and photovoltaic group Part, the fluorine film have the characteristics that uvioresistant ability is excellent, and the backboard prepared by the fluorine film has the excellent spy of uvioresistant ability Point and the characteristics of wear resistance is excellent and light transmittance conservation rate is high, and the backboard is used for the encapsulation of p-type double-side cell, Neng Goushi The light-weighted design of existing Double-sided battery pack, improves the initial power of Double-sided battery pack and lasting generated energy.
The purpose of the present invention is achieved through the following technical solutions：
A kind of fluorine film, including first layer, the second layer and third layer, first layer and third layer are separately positioned on the upper of the second layer Lower surface, first layer adulterate the first resin to be formed for PTFE resin, PVDF resins, plasticizer and light stabilizer, the second layer Material is PVDF resins, the second resin formed is blended in polyester resin and light stabilizer, and third layer is PTFE resin, PVDF trees Fat, plasticizer, light stabilizer and surfactant adulterate the 3rd resin to be formed.
It is calculated in mass percent, in the first resin, the content of PTFE resin is 5%-20%, and the content of PVDF resins is 70%-90%, the content of plasticizer is 1%-10%, and the content of light stabilizer is 1%-10%.
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:3~5:1, light stabilizer Content is the 1%-10% of the second resin quality.
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:3~5:1, the content of plasticizer is three-tree The 1%-10% of lipid amount, the content of light stabilizer are the 1%-10% of the 3rd resin quality, and the content of surfactant is the The 1%-10% of three resin qualities.
The gross thickness of fluorine film is 30-50 μm, wherein, the thickness of first layer is 5-20 μm, and the thickness of the second layer is 5-20 μm, The thickness of third layer is 5-20 μm.
Fluorine film is process for first layer, the second layer and third layer by three-layer co-extruded casting films processing method.
A kind of backboard, including the pet layer in intermediate layer, are separately positioned on two layers of glue-line of the upper and lower surface of pet layer, with And it is arranged on two layers of fluorine film of the lower surface of lower floor's glue-line and the upper surface of upper strata glue-line.
The material of glue-line is representative examples of saturated aliphatic polyurethane.
330-370 μm of the gross thickness of backboard, wherein, the thickness of pet layer is 250-288 μm, and the thickness of glue-line is 5-15 μm, The thickness of fluorine film is 30-50 μm.
A kind of photovoltaic module, including the first backboard 1, the first transparent EVA layer 2, cell piece 3, the second transparent EVA layer 4 and Two backboards 5, wherein, the first transparent EVA layer 2 and the second transparent EVA layer 4 are separately positioned on the upper and lower surface of cell piece 3, first back of the body Plate 1 is arranged on the upper surface of the first transparent EVA layer 2, and the second backboard 5 is arranged on the lower surface of the second transparent EVA layer 4.
Compared with prior art, the present invention has the advantages that：
The fluorine film first layer of the present invention adulterates to be formed first for PTFE resin, PVDF resins, plasticizer and light stabilizer Resin, the material of the second layer are the second resin that PVDF resins, polyester resin and stabilizer blending form, and third layer is PTFE trees Fat, PVDF resins, plasticizer, light stabilizer and surfactant adulterate the 3rd resin to be formed, therefore the fluorine film has anti-purple The characteristics of the characteristics of outer ability is excellent and light transmittance conservation rate are high, meanwhile, by adding surfactant in the 3rd resin, also So that third layer has a good cementability, PTFE resin is with the addition of in the first resin and the 3rd resin in the present invention, because This causes fluorine film of the present invention compared with existing fluorine film, has good wearability, and it is 200-300L to fall husky experiment, also has height Surface tension, surface energy 50-70Dyne, can play the role of good anti-gray.
The outermost of the backboard of the present invention is for two layers the fluorine film of the present invention, hence in so that backboard of the present invention has uvioresistant The characteristics of the characteristics of ability is excellent and high light transmittance conservation rate.
The photovoltaic module of the present invention can avoid using glass, Jin Erneng due to the use of the backboard with fluorine film Enough realize the lightweight of Double-sided battery pack, save production cost, cost of transportation and installation cost, but also there is uvioresistant Ability and the characteristics of high printing opacity, therefore the initial power of Double-sided battery pack and lasting generated energy can be improved.
Brief description of the drawings
Fig. 1 is the structure diagram of fluorine film of the present invention；
Fig. 2 is the structure diagram of backboard of the present invention；
Fig. 3 is the structure diagram of photovoltaic module of the present invention；
Wherein, the first backboards of 1-, 2- the first transparent EVA layers, 3- cell pieces, 4- the second transparent EVA layers, the second backboards of 5-, 6- first layers, the 7- second layers, 8- third layer, 9- fluorine films, 10- glue-lines, 11-PET layers.
Embodiment
It is next below in conjunction with the accompanying drawings that the present invention is further illustrated.
As shown in Figure 1, the fluorine film of the present invention includes first layer 6, the second layer 7 and third layer 8, first layer 6 and third layer 8 are divided The upper and lower surface of the second layer 7 is not arranged on, and first layer 6 adulterates to be formed for PTFE resin, PVDF resins, plasticizer and light stabilizer The first resin, the second resin that the material of the second layer 7 is PVDF resins, polyester resin and light stabilizer blending form, the 3rd Layer 8 adulterates the 3rd resin to be formed for PTFE resin, PVDF resins, plasticizer, light stabilizer and surfactant.
Specifically, being calculated in mass percent, in the first resin, the content of PTFE resin is 5%-20%, PVDF resins Content is 70%-90%, and the content of plasticizer is 1%-10%, and the content of light stabilizer is 1%-10%；
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:3~5:1, light stabilizer Content be the second resin quality 1%-10%；
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:3~5:1, the content of plasticizer is three-tree The 1%-10% of lipid amount, the content of light stabilizer are the 1%-10% of the 3rd resin quality, and the content of surfactant is the The 1%-10% of three resin qualities；
30-50 μm of the gross thickness of fluorine film, wherein, the thickness of first layer is 5-20 μm, and the thickness of the second layer is 5-20 μm, the Three layers of thickness is 5-20 μm.
Fluorine film is process for first layer, the second layer and third layer by three-layer co-extruded casting films processing method.
Embodiment 1
In the present embodiment, it is calculated in mass percent, in the first resin, the content of PTFE resin is containing for 5%, PVDF resins Measure as 85%, the content of plasticizer is 5%, and the content of light stabilizer is 5%；
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:1, light stabilizer contains Measure as the 2% of the second resin quality；
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:2, the content of plasticizer is the 3rd resin quality 1%, the content of light stabilizer is the 2% of the 3rd resin quality, and the content of surfactant is the 5% of the 3rd resin quality；
30 μm of the gross thickness of fluorine film, wherein, the thickness of first layer is 10 μm, and the thickness of the second layer is 10 μm, third layer Thickness is 10 μm.
The sand that falls of the present embodiment fluorine film is 200L, surface energy 52yne, and peeling force is 3N/cm between pet layer, and double 85 is wet After heat ageing 2000h, light transmittance 80%, ultraviolet ageing 250KWH post yellowings are 6.4
Embodiment 2
In the present embodiment, it is calculated in mass percent, in the first resin, the content of PTFE resin is 15%, PVDF resins Content is 76%, and the content of plasticizer is 1%, and the content of light stabilizer is 8%；
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:2, light stabilizer contains Measure as the 8% of the second resin quality；
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:1, the content of plasticizer is the 3rd resin quality 5%, the content of light stabilizer is the 8% of the 3rd resin quality, and the content of surfactant is the 1% of the 3rd resin quality；
40 μm of the gross thickness of fluorine film, wherein, the thickness of first layer is 5 μm, and the thickness of the second layer is 15 μm, the thickness of third layer Spend for 20 μm.
The sand that falls of the present embodiment fluorine film is 300L, surface energy 70yne, and peeling force is 2N/cm between pet layer, and double 85 is wet After heat ageing 2000h, light transmittance 85%, ultraviolet ageing 250KWH post yellowings are 3.4.
Embodiment 3
In the present embodiment, it is calculated in mass percent, in the first resin, the content of PTFE resin is containing for 0%, PVDF resins Measure as 71%, the content of plasticizer is 8%, and the content of light stabilizer is 1%；
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:3, light stabilizer contains Measure as the 10% of the second resin quality；
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:3, the content of plasticizer is the 3rd resin quality 8%, the content of light stabilizer is the 10% of the 3rd resin quality, and the content of surfactant is the 3rd resin quality 10%；
50 μm of the gross thickness of fluorine film, wherein, the thickness of first layer is 20 μm, and the thickness of the second layer is 20 μm, third layer Thickness is 10 μm.
The sand that falls of the present embodiment fluorine film is 200L, surface energy 50Dyne, and peeling force is 6N/cm between pet layer, and double 85 is wet After heat ageing 2000h, light transmittance 70%, ultraviolet ageing 250KWH post yellowings are 8.6.
Embodiment 4
In the present embodiment, it is calculated in mass percent, in the first resin, the content of PTFE resin is 10%, PVDF resins Content is 70%, and the content of plasticizer is 10%, and the content of light stabilizer is 10%；
In terms of mass fraction, in the second resin, the mass ratio of PVDF resins and polyester resin is 5:1, light stabilizer contains Measure as the 5% of the second resin quality；
In 3rd resin, the mass ratio of PTFE resin and PVDF resins is 5:2, the content of plasticizer is the 3rd resin quality 10%, the content of light stabilizer is the 5% of the 3rd resin quality, and the content of surfactant is the 8% of the 3rd resin quality；
40 μm of the gross thickness of fluorine film, wherein, the thickness of first layer is 20 μm, and the thickness of the second layer is 5 μm, the thickness of third layer Spend for 5 μm.
The sand that falls of the present embodiment fluorine film is 260L, surface energy 66yne, and peeling force is 5N/cm between pet layer, and double 85 is wet After heat ageing 2000h, light transmittance 87%, ultraviolet ageing 250KWH post yellowings are 3.4.
As shown in Fig. 2, backboard of the present invention includes the pet layer 11 in intermediate layer, the upper following table of pet layer 11 is separately positioned on Two layers of glue-line 10 in face, and it is arranged on two layers of fluorine film 9 of the lower surface of lower floor's glue-line and the upper surface of upper strata glue-line, two layers of fluorine Film 9 uses above-mentioned fluorine film.
Glue-line 10 is superelevation resistant to hydrolysis, the representative examples of saturated aliphatic polyurethane material of resistance to ultraviolet formula system, and glue-line 10 includes master Body resin and curing agent two-component, are mixed by matrix resin and curing agent；Matrix resin gathers for linear saturated aliphatic Compound, does not produce chromophore under long-term ultraviolet irradiation, does not produce xanthochromia, and the acid number of matrix resin is less than 1mg/KOH, tool There is a moisture-resistant pyrohydrolysis of superelevation, after double 85 hydrothermal aging 3000h, interlaminar strength ＞ 4N/cm；Curing agent gathers for isocyanates Compound；According to mass ratio it is 10 by matrix resin and curing agent when preparing glue-line 10:1-12:1 is uniformly mixed.
Barrier layer of the pet layer 11 as backboard, is the PET resin of high transparency, the molecular weight ＞ 18000 of PET resin, is tied Brilliant degree ＜ 20%, PET resin CEG carboxyl ＜ 30mg/KOH；Pet layer 11 forms a film through stretch processes, in transverse direction (MD) and indulges There is good mechanical property to (TD), in the equal ＞ 180MPa of tensile strength of MD (transverse direction) and TD (longitudinal direction), ultralow COOH's Design, enables PET resin after double 85 hydrothermal aging 2000h, percent retention of elongation ＞ 80%.
330-370 μm of the gross thickness of backboard, wherein, the thickness of pet layer is 250-288 μm, and the thickness of glue-line is 5-15 μm, The thickness of fluorine film is 30-50 μm.
After backboard total light transmittance ＞ 92%, double 85 hydrothermal aging 2000h, light transmittance conservation rate ＞ 90%, tensile strength And percent retention of elongation ＞ 80%；After ultraviolet irradiation 120KWH, light transmittance conservation rate ＞ 90%, tensile strength and elongation are protected Holdup ＞ 80%, fluorine film used in such backboard are high resistant combustible material, and VTM is 0 grade, has high-wearing feature, falls husky ＞ 200L.
As shown in figure 3, the photovoltaic module of the present invention is laminated construction, including the first backboard 1, the first transparent EVA layer 2, electricity Pond piece 3, the second transparent EVA layer 4 and the second backboard 5, the first backboard 1, the first transparent EVA layer 2, cell piece 3, the second transparent EVA 4 and second backboard 5 of layer is closely compound；
Wherein, the first transparent EVA layer 2 and the second transparent EVA layer 4 are separately positioned on the upper and lower surface of cell piece 3, first back of the body Plate 1 is arranged on the upper surface of the first transparent EVA layer 2, and the second backboard 5 is arranged on the lower surface of the second transparent EVA layer 4, first back of the body 1 and second backboard 5 of plate uses above-mentioned backboard.
Cell piece 3 is connected as solar cell string, is specially the distance between p-type double-sided solar battery piece, cell piece For 2mm, the line-spacing between battery strings is 3mm；
Solar cell string is connected by welding, and welding is tin-coated copper strip, and cell piece is 5 grid cells, and welding size is 1.0 ×0.25mm；
First transparent EVA layer 2 and the second transparent EVA layer 4 are high-transparency, and light transmittance ＞ 95%, EVA are straight chain crosslinked System, degree of cross linking ＞ 90%, body resistance are more than 1015Ω m, can realize the anti-PID of assembly end, glued membrane package assembling warp After 1500V, 192h, PID ＜ 5%；
The back side of photovoltaic module is equipped with terminal box, and terminal box is split type, and the width of terminal box is 30-40mm, and length is 70-90mm。
The photovoltaic module of the present invention is non-border structure component, and relative to two-sided solar double-glass assemblies, weight declines more than 70%, The weight of photovoltaic module of the present invention is 7-10kg.
The present invention is overcome the not rub resistance of transparent back panel and possesses the characteristic of high fire-retardance, be used for by the design of fluorine film Distributed power station, such as roof and greenhouse, which can play good fireproofing function, and realize the steady of long-term outdoor generated energy It is qualitative.
Designed by high hydrolysis resistance and the formula of high uvioresistant, can realize the high water resistance energy of backboard, ensure component length The stability of phase outdoor generating amount, improvement and interworking by material, solve the problems, such as the anti-PID of double-side cell, can realize After 1500V, 192h, PID ＜ 5%.
By the interconnection of component backboard and highly resistance PID EVA, the steady of photovoltaic module long-term outdoor power generation of the present invention is realized Qualitative, EVA substitutes tradition PO materials, and it is light-weighted while have inexpensive advantage again to realize component.
The beneficial effect that technical solution of the present invention is brought：
(1) efficient encapsulation design, realizes the anti-PID of Double-sided battery pack, ensure that the power generation that component long-term outdoor uses Amount；
(2) backboard substitution glass realizes the lightweight of Double-sided battery pack, saves production cost, cost of transportation, is mounted to This；
(3) selection of high bleed-through plate, the power of lifting assembly, realizes lightweight；
(4) design of high fire-retardance backboard, realizes the fire line of lightweight component, improves applied to distributed power station Security.

Claims (10)

1. a kind of fluorine film, it is characterised in that including first layer, the second layer and third layer, first layer and third layer are separately positioned on The upper and lower surface of the second layer, first layer adulterate the first tree to be formed for PTFE resin, PVDF resins, plasticizer and light stabilizer Fat, the material of the second layer are the second resin that PVDF resins, polyester resin and light stabilizer blending form, and third layer is PTFE trees Fat, PVDF resins, plasticizer, light stabilizer and surfactant adulterate the 3rd resin to be formed.
A kind of 2. fluorine film according to claim 1, it is characterised in that it is calculated in mass percent, in the first resin, PTFE trees The content of fat is 5%-20%, and the contents of PVDF resins is 70%-90%, and the content of plasticizer is 1%-10%, light stabilizer Content be 1%-10%.
A kind of 3. fluorine film according to claim 1, it is characterised in that in the second resin, PVDF resins and polyester resin Mass ratio is 5:3~5:1, light stabilizer content is the 1%-10% of the second resin quality.
A kind of 4. fluorine film according to claim 1, it is characterised in that in the 3rd resin, PTFE resin and PVDF resins Mass ratio is 5:3~5:1, the content of plasticizer is the 1%-10% of the 3rd resin quality, and the content of light stabilizer is three-tree The 1%-10% of lipid amount, the content of surfactant are the 1%-10% of the 3rd resin quality.
5. according to a kind of fluorine film described in claim 1-4 any one, it is characterised in that the gross thickness of fluorine film is 30 μm of -50 μ M, wherein, the thickness of first layer is 5-20 μm, and the thickness of the second layer is 5-20 μm, and the thickness of third layer is 5-20 μm.
6. according to a kind of fluorine film described in claim 1-4 any one, it is characterised in that fluorine film for first layer, the second layer and Third layer is process by three-layer co-extruded casting films processing method.
7. a kind of backboard, it is characterised in that including the pet layer in intermediate layer, be separately positioned on the two of the upper and lower surface of pet layer Layer glue-line, and two layers of fluorine film of the lower surface of lower floor's glue-line and the upper surface of upper strata glue-line is arranged on, the fluorine film is right It is required that the fluorine film described in 1-6 any one.
8. a kind of backboard according to claim 7, it is characterised in that the material of glue-line is representative examples of saturated aliphatic polyurethane.
A kind of 9. backboard according to claim 7 or 8, it is characterised in that the gross thickness of backboard is 330-370 μm, wherein, The thickness of pet layer is 250-288 μm, and the thickness of glue-line is 5-15 μm, and the thickness of fluorine film is 30-50 μm.
10. a kind of photovoltaic module, it is characterised in that including the first backboard (1), the first transparent EVA layer (2), cell piece (3), Two transparent EVA layers (4) and the second backboard (5), wherein, the first transparent EVA layer (2) and the second transparent EVA layer (4) are separately positioned on The upper and lower surface of cell piece (3), the first backboard (1) are arranged on the upper surface of the first transparent EVA layer (2), and the second backboard (5) is set In the lower surface of the second transparent EVA layer (4), first backboard (1) and the second backboard (5) are that claim 7 or 8 is any one Backboard described in.
CN201711185047.XA 2017-11-23 2017-11-23 A kind of fluorine film, backboard and photovoltaic module Pending CN107984842A (en)

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CN108598201A (en) * 2018-05-25 2018-09-28 北京汉能光伏投资有限公司 Solar cell package plate and its preparation process, solar cell
CN110010716A (en) * 2019-03-11 2019-07-12 常州回天新材料有限公司 Solar photovoltaic battery component backboard
CN110690307A (en) * 2019-10-30 2020-01-14 杭州福斯特应用材料股份有限公司 Transparent back plate for photovoltaic module and preparation method thereof
CN112786724A (en) * 2021-01-07 2021-05-11 浙江歌瑞新材料有限公司 Transparent photovoltaic backboard with high weather resistance and low water vapor transmittance
CN112980117A (en) * 2021-02-07 2021-06-18 韩华新能源（启东）有限公司 Composite material frame for photovoltaic module and preparation method
CN113573902A (en) * 2019-03-20 2021-10-29 小林股份有限公司 Film and method for producing fluorine-based resin composition

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CN105196633A (en) * 2015-10-15 2015-12-30 浙江歌瑞新材料有限公司 Decorative film adopting PP (polypropylene) substrate
EP3144140A1 (en) * 2015-09-17 2017-03-22 Amcor Flexibles Transpac Self adhesive corrosion protection film

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CN102315301A (en) * 2011-09-20 2012-01-11 江阴鑫辉太阳能有限公司 Light photovoltaic module
CN103921519A (en) * 2014-03-19 2014-07-16 浙江歌瑞新材料有限公司 Solar cell back plate membrane and preparation method thereof
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Publication number Priority date Publication date Assignee Title
CN108598201A (en) * 2018-05-25 2018-09-28 北京汉能光伏投资有限公司 Solar cell package plate and its preparation process, solar cell
CN110010716A (en) * 2019-03-11 2019-07-12 常州回天新材料有限公司 Solar photovoltaic battery component backboard
CN113573902A (en) * 2019-03-20 2021-10-29 小林股份有限公司 Film and method for producing fluorine-based resin composition
CN110690307A (en) * 2019-10-30 2020-01-14 杭州福斯特应用材料股份有限公司 Transparent back plate for photovoltaic module and preparation method thereof
CN112786724A (en) * 2021-01-07 2021-05-11 浙江歌瑞新材料有限公司 Transparent photovoltaic backboard with high weather resistance and low water vapor transmittance
CN112980117A (en) * 2021-02-07 2021-06-18 韩华新能源（启东）有限公司 Composite material frame for photovoltaic module and preparation method

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Application publication date: 20180504