CN207303123U - A kind of high-barrier solar cell backboard - Google Patents
A kind of high-barrier solar cell backboard Download PDFInfo
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- CN207303123U CN207303123U CN201721476719.8U CN201721476719U CN207303123U CN 207303123 U CN207303123 U CN 207303123U CN 201721476719 U CN201721476719 U CN 201721476719U CN 207303123 U CN207303123 U CN 207303123U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses a kind of high-barrier solar cell backboard; the solar cell backboard includes weathering protective layer, substrate layer, the weather-proof tack coat being cascading; the weathering protective layer, substrate layer, the ratio between the thickness of weather-proof tack coat three are 0.01 ~ 0.20 ︰, 1 ︰ 0.01 ~ 0.20, and the solar cell backboard further includes at least one layer of alumina layer being arranged between the substrate layer and the weathering protective layer；The high-barrier solar cell backboard of the utility model has preferable cohesive force, excellent weatherability, very high water vapor barrier property with EVA, disclosure satisfy that the application requirement of solar cell backboard.
Description
Technical field
The utility model belongs to area of solar cell, and in particular to a kind of high-barrier solar cell backboard.
Background technology
Solar power generation is that directly the visible ray of the sun is changed into using the principle of photovoltaic effect of the semiconductors such as silicon
Electric energy.But due to its in face of weather and the changeable environment of change, it is necessary to a kind of material protects silicon chip of solar cell,
In face of direct sunlight one side we silicon chip is generally protected using glass, and reverse side is then protected using solar cell backboard
Shield.On this basis, it is desirable to which solar cell backboard has following characteristic：
First, solar cell backboard will have very excellent weatherability, can resist atrocious weather；Secondly, solar energy
Battery back-sheet requirement has extraordinary ultraviolet absorption ability, and preferably protection is used for fixing silicon chip and EVA.In addition, solar-electricity
Pond backboard must also have low-down water vapor permeation rate, the therefore short circuit of making moist of protection silicon chip, while we also require too
The quality of positive energy battery back-sheet is very light, mitigates the quality of whole photovoltaic modules.
And requirement of the existing customer to backboard water vapor transmittance is higher and higher；The existing method for reducing backboard water vapor transmittance
It is mainly the following：Using aluminium foil complex technique, such a backboard water vapor transmittance is minimum, but due to such a backboard of existing structure
It is poor there are insulation performance, easily occur the risk of wet electric leakage using process；Use and improve middle layer of PET thickness to reduce steam transmission
Rate, such a scheme reduction steam effect is poor and cost is more expensive；Using compound sputter membrane technology, such a backboard water vapor rejection effect
Between it is above-mentioned between the two, but for sputtered layer there are easy to fall off, it is bad that water vapor rejection effect reduces etc. after aging.
Summary method in Chinese patent CN206340561, is related to a kind of high water resistant solar components containing aluminium foil backboard,
It include be cascading weather-proof film layer, the first adhesive layer, the first base material layer, the second adhesive layer, aluminium foil layer, the 3rd glue
Glutinous layer, the second substrate layer and weathering resistance coatings, the weather-proof film layer is polyvinyl fluoride layer, polyvinylidene fluoride layer, tetrafluoroethene-second
Alkene copolymer, tetrafluoroethene-hexafluoropropylene copolymer or pet layer.Although required that can meet to block water to a certain degree etc., the back of the body
Harden structure and technical process are considerably complicated, are unfavorable for production and cost is higher.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of excellent combination property
Novel high-barrier solar cell backboard.
To solve above technical problem, a kind of technical solution that the utility model is taken is as follows：
A kind of high-barrier solar cell backboard, the solar cell backboard include the weather-proof protection being cascading
Layer, substrate layer, weather-proof tack coat, the weathering protective layer, the substrate layer, the ratio between the thickness of the weather-proof tack coat three are
0.01~0.20 ︰, 1 ︰ 0.01~0.20, the solar cell backboard, which further includes, is arranged on the substrate layer and the weather-proof guarantor
At least one layer of alumina layer between sheath.
Some preferred aspects according to the present utility model, the weathering protective layer include weathering film layer, be arranged on it is described resistance to
Wait the weather-proof glue-line between film layer and the alumina layer.
Preferably, the ratio between thickness of the thickness of the weathering film layer and the weather-proof glue-line is 4~20 ︰ 1.
Some in the utility model are specific and be preferably carried out in mode, and the thickness of the weathering film layer is micro- for 10~50
Rice.
Some in the utility model are specific and be preferably carried out in mode, and the thickness of the weather-proof glue-line is 2~15
Micron.
Some in the utility model are specific and be preferably carried out in mode, and the material of the weathering film layer is polyvinyl fluoride
Layer, polyvinylidene fluoride layer, tetrafluoroethylene-ethylene copolymer, tetrafluoroethene-hexafluoropropylene copolymer, modified poly terephthalic acid
Two ester layer of second, polyethylene naphthalate layer, polybutylene terephthalate layer, two hexamethylene diamine layer of poly- hexanoyl, polycaprolactam
Layer or Polycarbonate Layer, the material of the weather-proof glue-line is adhesive for polyurethane, acrylic acid adhesive, polyester adhesive or epoxy
Resin adhesive.
Some in the utility model are specific and be preferably carried out in mode, and the thickness of the weather-proof tack coat is 2~30
Micron.
Some in the utility model are specific and be preferably carried out in mode, and the thickness of the substrate layer is micro- for 200~400
Rice.
Some in the utility model are specific and be preferably carried out in mode, and the thickness of the alumina layer is received for 8~500
Rice, the alumina layer are by by the reactant Vacuum Deposition of aluminium and oxygen plating alumina layer formed on the substrate.The method is
Conventional method, can select specific vacuum condition and temperature conditionss to carry out according to actual conditions.
Some in the utility model are specific and be preferably carried out in mode, and the material of the substrate layer is modified poly- to benzene
Dioctyl phthalate second diester, polyethylene naphthalate, polybutylene terephthalate, two hexamethylene diamine of poly- hexanoyl, polycaprolactam or
Makrolon.
According to such scheme preferred embodiment, the solar cell backboard is described weather-proof by what is stacked gradually
Film layer, the weather-proof glue-line, the alumina layer, the substrate layer and the weather-proof tack coat are formed.
Due to the use of above technical scheme, the utility model has the following advantages that compared with prior art：
The solar cell backboard of the utility model, it is finer and close compared to aluminium using aluminium oxide, to steam, oxygen etc.
Barrier also more preferably, especially can effectively be blocked water oxygen, and the consumption of aluminium and cost are compared to existing with Vacuum Deposition alumina layer
It is lower for technology, at the same have concurrently it is non-conductive under aluminium oxide room temperature, without wet electric leakage risk；And the utility model is by by aluminium
Product, that is, aluminium oxide direct plating with oxygen reaction causes the alumina layer to be formed more on substrate layer with the connection mode of Vacuum Deposition
Densification, can efficiently block water oxygen, while by controlling the thickness ratio of layers of material in conjunction with weather-proof glue-line and weathering film layer to oxygen
Change the protection of aluminium lamination and substrate layer so that the weatherability of whole back plate, barrier, ageing resistance, adhesion and other effects are more preferably.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the overall structure diagram of an embodiment of the high-barrier solar cell backboard of the utility model；
Wherein, 1 ', weather-proof tack coat；2 ', substrate layer；3 ', alumina layer；A, weathering protective layer；
Fig. 2 is the overall structure signal of the another embodiment of the high-barrier solar cell backboard of the utility model
Figure；
Wherein, 1, weather-proof tack coat；2nd, substrate layer；3rd, alumina layer；4th, weather-proof glue-line；5th, weathering film layer.
Embodiment
The utility model provides a kind of high-barrier solar cell backboard, and the solar cell backboard includes layer successively
The folded weathering protective layer a set, substrate layer 2,2 ', weather-proof tack coat 1,1 ', it is the weathering protective layer a, substrate layer 2,2 ', weather-proof
The ratio between thickness of 1,1 ' three of tack coat is 0.01~0.20 ︰, 1 ︰ 0.01~0.20, and the solar cell backboard, which further includes, to be set
Put at least one layer of alumina layer 3,3 ' between the substrate layer 2,2 ' and the weathering protective layer a.By controlling each interlayer
Thickness ratio in conjunction with weathering layer and alumina layer 3,3 ', may be such that whole back plate has excellent weatherability and high-barrier
Property, ageing resistance and other effects.
Preferably, weathering protective layer a can directly be cured by the way that weather-proof protective coating is coated on alumina layer 3,3 '
To (the weather-proof protective coating of routine of the prior art).
Preferably, as shown in Fig. 2, the weathering protective layer a can also be：It include weathering film layer 5, be arranged on it is described resistance to
Wait the weather-proof glue-line 4 between film layer 5 and the alumina layer 3.It is further preferred that the thickness of the weathering film layer 5 with it is described
The ratio between thickness of weather-proof glue-line 4 is 4~20 ︰ 1.Wherein, the thickness of the weathering film layer 5 is 10~50 microns.Described is weather-proof
The thickness of glue-line 4 is 2~15 microns.Preferably, it is 15 to control the gross thickness of the weathering film layer 5 and the weather-proof glue-line 4
~45 microns.It is highly preferred that it is 15~40 microns to control the gross thickness of the weathering film layer 5 and the weather-proof glue-line 4.Into one
Preferably, it is 20~35 microns to control the gross thickness of the weathering film layer 5 and the weather-proof glue-line 4 to step.The weathering film layer 5
Material for polyvinyl fluoride layer, polyvinylidene fluoride layer, tetrafluoroethylene-ethylene copolymer, tetrafluoroethene-hexafluoropropylene copolymer,
Modified layer of polyethylene terephthalate, polyethylene naphthalate layer, polybutylene terephthalate layer, poly- hexanoyl two oneself two
Amine layer, polycaprolactam amine layer or Polycarbonate Layer.The material of the weather-proof glue-line 4 for adhesive for polyurethane, acrylic acid adhesive,
Polyester adhesive or epoxy resin adhesive.
The thickness of the weather-proof tack coat 1,1 ' is 2~30 microns.Preferably, the thickness of the weather-proof tack coat 1,1 ' is
5~30 microns.The thickness of the substrate layer 2,2 ' is 200~400 microns.Preferably, the thickness of the substrate layer 2,2 ' is 200
~350 microns.The material of the substrate layer 2,2 ' be modified polyethylene terephthalate, polyethylene naphthalate, poly- pair
Terephtha-late, two hexamethylene diamine of poly- hexanoyl, polycaprolactam or makrolon.
The thickness of the alumina layer 3,3 ' is 8~500 nanometers.Preferably, the alumina layer 3,3 ' is by by aluminium
With the reactant Vacuum Deposition plating alumina layer formed on the substrate of oxygen, the method is conventional method, can be selected according to actual conditions
Select specific vacuum condition and temperature conditionss carry out.It is highly preferred that the thickness of the alumina layer 3,3 ' is 8~500 nanometers.
It is further preferred that the thickness of the alumina layer 3,3 ' is 8~300 nanometers.It is further preferred that the alumina layer 3,
3 ' thickness is 8~100 nanometers.In some specific and preferred embodiments of the utility model, the alumina layer 3,
3 ' thickness is 8~20 nanometers.
In some other embodiments of the utility model, alumina layer 3,3 ' can also be arranged to double-deck, i.e.,
Equal Vacuum Deposition or compound one layer of alumina layer 3,3 ' on the opposite two sides of the substrate layer 3,3 '.
Such scheme is described further below in conjunction with specific embodiment；It is to be understood that these embodiments are to be used to illustrate
The basic principle, main feature and advantage of the utility model, and the utility model limits from the scope of following embodiments.It is following
Coating in embodiment is selected from the conventional coating of this area in the prior art.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of high-barrier solar cell backboard, including it is cascading resistance to
Protective layer a, alumina layer 3 ', substrate layer 2 ', weather-proof tack coat 1 ' are waited, is specially：The thickness of weathering protective layer a is 20 microns,
It can directly be obtained by the way that weather-proof protective coating conventional in the prior art to be coated in cure on alumina layer 3 '；Substrate layer 2 '
Material be PET, its thickness is 300 microns；The thickness of weather-proof tack coat 1 ' is 10 microns, it can be by conventional in the prior art
Weather-proof cohesive coating coated in being formed through heat cure on substrate layer 2 '；The thickness of alumina layer 3 ' be 10 nanometers, it be
The reactant Vacuum Deposition of aluminum strip and high pure oxygen is formed on base material at 1400 DEG C.
Embodiment 2
As shown in Figure 1, present embodiments providing a kind of high-barrier solar cell backboard, including it is cascading resistance to
Protective layer a, alumina layer 3 ', substrate layer 2 ', weather-proof tack coat 1 ' are waited, is specially：The thickness of weathering protective layer a is 30 microns,
The material of substrate layer 2 ' is polycaprolactam, its thickness is 250 microns, and the thickness of weather-proof tack coat 1 ' is 15 microns, aluminium oxide
The thickness of layer 3 ' is 8 nanometers, remaining is the same as embodiment 1.
Embodiment 3
As shown in Fig. 2, present embodiments providing a kind of high-barrier solar cell backboard, including it is cascading resistance to
Film layer 5, weather-proof glue-line 4, alumina layer 3, substrate layer 2, weather-proof tack coat 1 are waited, wherein, the material of substrate layer 2 is phthalic acid
Second diester, its thickness are 350 microns；The thickness of weather-proof tack coat 1 is 5 microns, it is coated in substrate layer 2 by weather-proof cohesive coating
On formed through heat cure；For 3 thickness of alumina layer at 9 nanometers, it is the reactant Vacuum Deposition of aluminum strip and high pure oxygen at 1400 DEG C
Formed on base material；The thickness of weather-proof glue-line 4 is 4 microns, and the thickness of weathering film layer 5 is 21 microns, and weather-proof glue-line 4 can be by normal
Rule method by epoxy resin adhesive coated in being formed on alumina layer 3, weathering film layer 5 can by conventional method with weather-proof glue-line
4 is compound.
Embodiment 4
As shown in Fig. 2, present embodiments providing a kind of high-barrier solar cell backboard, including it is cascading resistance to
Film layer 5, weather-proof glue-line 4, alumina layer 3, substrate layer 2, weather-proof tack coat 1 are waited, wherein, the material of substrate layer 2 is PET, it is thick
Spend for 200 microns；Weather-proof 1 thickness of tack coat is 30 microns；For 3 thickness of alumina layer at 15 nanometers, the thickness of weather-proof glue-line 4 is 3
Micron, the thickness of weathering film layer 5 is 27 microns, remaining is the same as embodiment 3.
Embodiment 5
As shown in Fig. 2, present embodiments providing a kind of high-barrier solar cell backboard, including it is cascading resistance to
Film layer 5, weather-proof glue-line 4, alumina layer 3, substrate layer 2, weather-proof tack coat 1 are waited, wherein, the material of substrate layer 2 is PET, it is thick
Spend for 250 microns；Weather-proof 1 thickness of tack coat is 20 microns；For 3 thickness of alumina layer at 12 nanometers, the thickness of weather-proof glue-line 4 is 5
Micron, the thickness of weathering film layer 5 is 20 microns, remaining is the same as embodiment 3.
By embodiment 1, into embodiment 5, high-barrier solar cell backboard carries out basic performance test, its standard or method
It is as follows：1. with EVA peel strengths (GB/T2790)；2. water vapor transmittance (ASTMF-1249)；3. resistance to double 85 aging (GB/
T2423.3).Above-mentioned test result is listed in table 1.
Table 1, embodiment 1 the high-barrier solar cell backboard basic performance test result into embodiment 5
In terms of above-mentioned test result, high-barrier solar cell backboard in embodiment 1 to embodiment 5 and EVA have compared with
Cohesive force well, excellent weatherability, very high water vapor barrier property, disclosure satisfy that the application requirement of solar cell backboard.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this,
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (10)
1. a kind of high-barrier solar cell backboard, it is characterised in that the solar cell backboard includes being cascading
Weathering protective layer, substrate layer, weather-proof tack coat, the weathering protective layer, the substrate layer, the weather-proof tack coat three
The ratio between thickness is 0.01~0.20 ︰, 1 ︰ 0.01~0.20, the solar cell backboard further include be arranged on the substrate layer and
At least one layer of alumina layer between the weathering protective layer.
2. high-barrier solar cell backboard according to claim 1, it is characterised in that the weathering protective layer includes resistance to
Wait film layer, the weather-proof glue-line being arranged between the weathering film layer and the alumina layer.
3. high-barrier solar cell backboard according to claim 2, it is characterised in that the thickness of the weathering film layer with
The ratio between thickness of the weather-proof glue-line is 4~20 ︰ 1.
4. the high-barrier solar cell backboard according to Claims 2 or 3, it is characterised in that the thickness of the weathering film layer
Spend for 10~50 microns.
5. the high-barrier solar cell backboard according to Claims 2 or 3, it is characterised in that the weather-proof glue-line
Thickness is 2~15 microns.
6. the high-barrier solar cell backboard according to Claims 2 or 3, it is characterised in that the material of the weathering film layer
Expect for polyvinyl fluoride layer, polyvinylidene fluoride layer, tetrafluoroethylene-ethylene copolymer, tetrafluoroethene-hexafluoropropylene copolymer, modification
Layer of polyethylene terephthalate, polyethylene naphthalate layer, polybutylene terephthalate layer, two hexamethylene diamine of poly- hexanoyl
Layer, polycaprolactam amine layer or Polycarbonate Layer, the material of the weather-proof glue-line are adhesive for polyurethane, acrylic acid adhesive, gather
Ester adhesive or epoxy resin adhesive.
7. high-barrier solar cell backboard according to claim 1, it is characterised in that the thickness of the weather-proof tack coat
For 2~30 microns.
8. high-barrier solar cell backboard according to claim 1, it is characterised in that the thickness of the substrate layer is
200~400 microns.
9. high-barrier solar cell backboard according to claim 1, it is characterised in that the thickness of the alumina layer is
8~500 nanometers, the alumina layer is by by the reactant Vacuum Deposition of aluminium and oxygen plating alumina layer formed on the substrate.
10. high-barrier solar cell backboard according to claim 1, it is characterised in that the material of the substrate layer is
It is modified polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, two hexamethylene diamine of poly- hexanoyl, poly-
Caprolactam or makrolon.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721476719.8U CN207303123U (en) | 2017-11-08 | 2017-11-08 | A kind of high-barrier solar cell backboard |
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| CN201721476719.8U CN207303123U (en) | 2017-11-08 | 2017-11-08 | A kind of high-barrier solar cell backboard |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449231A (en) * | 2018-09-11 | 2019-03-08 | 广东圣帕新材料股份有限公司 | A kind of high light transmission composite material and preparation method |
| CN109888043A (en) * | 2019-03-12 | 2019-06-14 | 浙江晶茂科技股份有限公司 | A kind of novel high-barrier solar energy backboard, production method and application method |
| CN110938387A (en) * | 2018-09-25 | 2020-03-31 | 苏州维兰德新材料有限公司 | High-weather-resistance polyolefin composite film for solar cell back plate and preparation method thereof |
| CN111785803A (en) * | 2020-06-02 | 2020-10-16 | 扬州艾能新能源有限公司 | Anti-aging anti-cracking polycrystalline solar cell back plate |
| CN113471317A (en) * | 2021-07-01 | 2021-10-01 | 江苏博煦电池科技有限公司 | Solar cell backboard for street lamp |
| CN115632081A (en) * | 2022-10-27 | 2023-01-20 | 江苏苏宝塑料实业有限公司 | High-weather-resistance packaging back film and manufacturing method thereof |
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2017
- 2017-11-08 CN CN201721476719.8U patent/CN207303123U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449231A (en) * | 2018-09-11 | 2019-03-08 | 广东圣帕新材料股份有限公司 | A kind of high light transmission composite material and preparation method |
| CN110938387A (en) * | 2018-09-25 | 2020-03-31 | 苏州维兰德新材料有限公司 | High-weather-resistance polyolefin composite film for solar cell back plate and preparation method thereof |
| CN109888043A (en) * | 2019-03-12 | 2019-06-14 | 浙江晶茂科技股份有限公司 | A kind of novel high-barrier solar energy backboard, production method and application method |
| CN111785803A (en) * | 2020-06-02 | 2020-10-16 | 扬州艾能新能源有限公司 | Anti-aging anti-cracking polycrystalline solar cell back plate |
| CN113471317A (en) * | 2021-07-01 | 2021-10-01 | 江苏博煦电池科技有限公司 | Solar cell backboard for street lamp |
| CN115632081A (en) * | 2022-10-27 | 2023-01-20 | 江苏苏宝塑料实业有限公司 | High-weather-resistance packaging back film and manufacturing method thereof |
| CN115632081B (en) * | 2022-10-27 | 2024-01-30 | 湖北金诺新材料科技有限公司 | High-weather-resistance packaging back film and manufacturing method thereof |
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