CN111384195B - Reflecting film, photovoltaic module and method for eliminating influence of soldering flux - Google Patents
Reflecting film, photovoltaic module and method for eliminating influence of soldering flux Download PDFInfo
- Publication number
- CN111384195B CN111384195B CN201811631081.XA CN201811631081A CN111384195B CN 111384195 B CN111384195 B CN 111384195B CN 201811631081 A CN201811631081 A CN 201811631081A CN 111384195 B CN111384195 B CN 111384195B
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- China
- Prior art keywords
- eva
- compatilizer
- photovoltaic module
- soldering flux
- layer
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- 230000004907 flux Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005476 soldering Methods 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 11
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 21
- -1 cyclic anhydride Chemical class 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 8
- 239000002346 layers by function Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 238000010345 tape casting Methods 0.000 abstract 1
- 238000010248 power generation Methods 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Classifications
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- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
- H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- 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
- Y02E10/52—PV systems with concentrators
Abstract
The invention discloses a reflecting film applied to a photovoltaic module, the photovoltaic module and a method for eliminating the influence of soldering flux, wherein the project uses a compatilizer in materials in the photovoltaic industry for the first time, the compatilizer is added in a certain ratio, the main component of the compatilizer in practical application can adopt maleic anhydride, the ratio is 1-7%, the maleic anhydride is preferably mixed with EVA particles, and the mixture is suitable for tape casting extrusion at the same time, so that the residue of the soldering flux on a welding tape can be better contained, the attaching force of the reflecting film and the welding tape is improved, about 5 newtons is reached, the offset is reduced to 0.2 mm, and the improvement efficiency is ensured to be about 2-3%.
Description
Technical Field
The invention relates to the field of photovoltaic modules, in particular to a reflecting film applied to a photovoltaic module, the photovoltaic module and a method for eliminating the influence of soldering flux.
Background
In the prior art, gaps and solder strips covered on the photovoltaic modules are arranged between the photovoltaic modules and between the photovoltaic module strings, and the gaps and the solder strips substantially occupy the surface area of the photovoltaic modules but cannot participate in energy conversion, so that sunlight received by the part of the area is wasted, the effective power generation area of a single photovoltaic module is reduced, and the problem needs to be further solved along with the higher and higher requirements on the power generation efficiency of the photovoltaic modules. Therefore, a reflective film is provided, which has a micro-prism structure, covers the gaps and the solder strips, and reflects sunlight irradiated on the positions to a sheet working area through the micro-prisms and the glass panel, so that the sunlight is utilized, and the power generation efficiency of the photovoltaic module is effectively improved. However, since the flux is incompatible with EVA and the bonding effect of EVA and the solder strip is reduced, it is necessary to solve the problem of flux residue, and if a separate process is used to remove the flux, time and labor are consumed, and a simple and easy method needs to be found.
Disclosure of Invention
The invention aims to provide a technical scheme with low cost and simple scheme.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the utility model provides a be applied to photovoltaic module's reflectance coating, includes following structure from top to bottom in proper order:
a functional layer having micro prisms for reflecting sunlight;
the EVA layer is used for bonding the functional layer to the welding strip; the EVA layer includes:
EVA, and a compatilizer coated on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
Further, the compatibilizer is a cyclic anhydride type.
Furthermore, the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA.
Further, the compatilizer is maleic anhydride.
The invention also provides a method for eliminating the influence of residual soldering flux on the surface of a solder strip on a photovoltaic module on an adhesive reflecting film,
in the preparation of the reflective film, the EVA layer of the reflective film is processed by the following method:
coating a compatilizer on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
Further, the compatibilizer is a cyclic anhydride type.
Furthermore, the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA.
Further, the compatilizer is maleic anhydride.
The invention also provides a photovoltaic module, wherein the upper surfaces of the welding strips of the photovoltaic module are covered with the reflecting film of the claim or the reflecting film prepared by the method.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 shows a schematic view of a reflective film of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a reflective film applied to a photovoltaic module sequentially comprises the following structures from top to bottom:
a functional layer 1 having micro prisms for reflecting sunlight;
the EVA layer 2 is used for bonding the functional layer to the welding strip;
the EVA layer includes:
EVA, and a compatilizer coated on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
The project uses the compatilizer in the photovoltaic industry material for the first time, and the compatilizer with a certain ratio is added, so that the main component of the compatilizer in practical application can be the Maran anhydride, the proportion is 1-7%, the Maran anhydride is preferably firstly mixed with EVA particles, and the mixture can be suitable for flow casting extrusion, so that the mixture can better contain the flux residue on a welding strip, the adhesion force of a reflecting film and the welding strip is improved, about 5 newtons is achieved, the offset is reduced to 0.2 mm, and the improvement efficiency is ensured to be about 2% -3%.
In practical application, the compatilizer is a cyclic anhydride type.
In practical application, the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA.
Preferably, the compatilizer is mainly maleic anhydride.
The invention also provides a method for eliminating the influence of residual soldering flux on the surface of a solder strip on a photovoltaic module on an adhesive reflecting film,
in the preparation of the reflective film, the EVA layer of the reflective film is processed by the following method:
coating a compatilizer on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
Further, the compatibilizer is a cyclic anhydride type.
Furthermore, the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA.
Further, the compatilizer is maleic anhydride.
The invention also provides a photovoltaic module, wherein the upper surfaces of the welding strips of the photovoltaic module are covered with the reflecting film of the claim or the reflecting film prepared by the method. By adopting the method, the residual soldering flux on the welding strip can be better contained by the reflecting film, the adhesion force of the reflecting film and the welding strip is improved to about 5N, the offset is reduced to 0.2 mm, and the improvement efficiency is ensured to be about 2-3%.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and similar parts between the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a be applied to photovoltaic module's reflectance coating which characterized in that, from the top down includes following structure in proper order:
a functional layer having micro prisms for reflecting sunlight;
the EVA layer is used for bonding the functional layer to the welding strip; the EVA layer includes:
EVA, and a compatilizer coated on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer; the compatilizer is a cyclic anhydride type;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
2. The reflective film for photovoltaic module according to claim 1,
the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA by weight.
3. The reflective film for photovoltaic module application according to claim 1 or 2,
the compatilizer is maleic anhydride.
4. A method for eliminating the influence of residual soldering flux on the surface of a solder strip on a photovoltaic module on an adhesive reflecting film is characterized in that,
in the preparation of the reflective film, the EVA layer of the reflective film is processed by the following method:
coating a compatilizer on the lower surface of the EVA, or,
mixing EVA and a compatilizer to form an EVA layer; the compatilizer is a cyclic anhydride type;
the compatilizer is used for enabling the soldering flux and the EVA to be combined compatibly.
5. The method of claim 4,
the EVA layer is formed by mixing 1-7% of cyclic anhydride compatilizer and 93-99% of EVA by weight.
6. The method according to claim 4 or 5,
the compatilizer is maleic anhydride.
7. A photovoltaic module, wherein the upper surfaces of the solder strips of the photovoltaic module are covered with the reflective film according to any one of claims 1 to 3 or the reflective film prepared by the method according to any one of claims 4 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631081.XA CN111384195B (en) | 2018-12-28 | 2018-12-28 | Reflecting film, photovoltaic module and method for eliminating influence of soldering flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631081.XA CN111384195B (en) | 2018-12-28 | 2018-12-28 | Reflecting film, photovoltaic module and method for eliminating influence of soldering flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111384195A CN111384195A (en) | 2020-07-07 |
| CN111384195B true CN111384195B (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631081.XA Active CN111384195B (en) | 2018-12-28 | 2018-12-28 | Reflecting film, photovoltaic module and method for eliminating influence of soldering flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111384195B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110146754A1 (en) * | 2009-12-22 | 2011-06-23 | Brightleaf Technologies, Inc. | Solar conversion system having solar collector for forming a transposed image |
| CN105374885B (en) * | 2014-09-29 | 2017-04-12 | 凡登（江苏）新型材料有限公司 | Manufacturing method and production line of heterogeneous high-efficiency photovoltaic solder strip and conductive base band |
| CN107216830A (en) * | 2017-07-10 | 2017-09-29 | 荆楚理工学院 | A kind of white EVA adhesive film of precuring type and preparation method and application |
| CN107863406A (en) * | 2017-12-11 | 2018-03-30 | 浙江宝利特新能源股份有限公司 | A kind of reflectance coating and photovoltaic module and preparation method for photovoltaic module |
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2018
- 2018-12-28 CN CN201811631081.XA patent/CN111384195B/en active Active
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| CN111384195A (en) | 2020-07-07 |
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