CN110299419B - A new type of coating process for solar flexible modules - Google Patents
A new type of coating process for solar flexible modules Download PDFInfo
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- CN110299419B CN110299419B CN201910568531.3A CN201910568531A CN110299419B CN 110299419 B CN110299419 B CN 110299419B CN 201910568531 A CN201910568531 A CN 201910568531A CN 110299419 B CN110299419 B CN 110299419B
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- 238000000576 coating method Methods 0.000 title claims abstract description 35
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000003475 lamination Methods 0.000 claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000003698 laser cutting Methods 0.000 claims abstract description 4
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000007888 film coating Substances 0.000 claims abstract 7
- 238000009501 film coating Methods 0.000 claims abstract 7
- 238000005538 encapsulation Methods 0.000 claims abstract 2
- 238000010030 laminating Methods 0.000 claims description 15
- 238000004132 cross linking Methods 0.000 claims description 4
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000037303 wrinkles Effects 0.000 abstract description 2
- 230000005856 abnormality Effects 0.000 abstract 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 20
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 20
- 239000002313 adhesive film Substances 0.000 description 11
- 230000007547 defect Effects 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000007757 hot melt coating Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/30—Coatings
- H10F77/306—Coatings for devices having potential barriers
- H10F77/311—Coatings for devices having potential barriers for photovoltaic cells
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Photovoltaic Devices (AREA)
- Laminated Bodies (AREA)
Abstract
本发明涉及一种新型太阳能柔性组件的覆膜工艺，其技术方案要点是，所述工艺包括：S1:准备所需材料：太阳能TPT背板、太阳能电池片、EVA胶膜、ETFE；S2:叠层，自底层往上依次将太阳能TPT背板、EVA胶膜、太阳能电池片、EVA胶膜进行叠层；S3:层压前EL测试；S4:层压，在142摄氏度环境中对太阳能组件进行封装；S5:ETFE的熔化，将ETFE放入加热设备，加热到275摄氏度使其融化为液体；S6:涂覆，将融化的液体状ETFE利用液压或液体电泵装置输送到涂覆设备的工作头；太阳能组件进入涂覆设备后，工作头进入设置的工作起点开启涂覆工作；S7:涂覆冷却后进行EL测试；S8:激光切割；S9:组件制备完成。达到避免因ETFE膜产生褶皱、移位等异常，提高太阳能组件寿命的目的。
The present invention relates to a film coating process for a new type of solar flexible module. The main point of the technical solution is that the process includes: S1: preparing required materials: solar TPT backplane, solar cell, EVA film, ETFE; S2: stacking Layer, from the bottom layer to the top of the solar TPT back sheet, EVA film, solar cells, EVA film for lamination; S3: EL test before lamination; S4: lamination, in 142 degrees Celsius environment to carry out the solar module Encapsulation; S5: Melting of ETFE, put ETFE into heating equipment, heated to 275 degrees Celsius to melt it into a liquid; S6: Coating, the work of transporting the melted liquid ETFE to the coating equipment using a hydraulic or liquid electric pump device head; after the solar module enters the coating equipment, the working head enters the set working starting point to start the coating work; S7: EL test after coating and cooling; S8: laser cutting; S9: component preparation is completed. The purpose of avoiding wrinkles, displacement and other abnormalities caused by ETFE film and improving the life of solar modules is achieved.
Description
Technical Field
The invention relates to the technical field of solar module manufacturing, in particular to a novel film covering process for a solar flexible module.
Background
Along with the development of social economy and the improvement of living standard of people, people desire to use clean energy to replace fossil energy, solar energy is more and more paid attention to as new energy which is most widely applied, and along with the popularization of solar energy, a solar cell module plays a greater and greater role in life of people.
The flexible solar photovoltaic module is manufactured by laminating an ETFE film with the thickness of 0.05mm or a TPT film with the transparency of 0.3mm, and the transparent TPT film has poor weather resistance compared with the ETFE film, but the ETFE film is very thin and is easy to generate poor phenomena such as wrinkles, displacement, poor adhesion with EVA and the like in the laminating manufacturing process.
Therefore, it is necessary to provide a novel film covering process for a solar flexible module to solve the problem of abnormal conditions caused by the ETFE film.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a novel film laminating process for a solar flexible assembly, which is beneficial to solving the problems of wrinkling and displacement of an ETFE film, low adhesion with EVA and the like.
The technical purpose of the invention is realized by the following technical scheme:
a novel process for laminating a solar flexible module, the process comprising: s1, preparing the following required materials: the solar cell comprises a solar TPT back plate, a solar cell sheet, an EVA adhesive film and ETFE; s2, laminating, namely sequentially laminating the solar TPT back plate, the EVA adhesive film, the solar cell piece and the EVA adhesive film from the bottom layer to the top; s3, performing EL test before lamination, and detecting whether the solar module is damaged or not through an EL detector; s4, laminating, namely placing the solar module subjected to the EL test on a feeding table of a laminating machine, and packaging the module in an environment of 142 ℃, wherein the packaging time needs to ensure that the crosslinking degree of an EVA adhesive film is more than 70%; s5, melting the ETFE, putting the ETFE into a heating device, heating to 275 ℃ to melt the ETFE into liquid, and vacuumizing while melting to ensure that the melted ETFE liquid has no bubbles; s6, coating the ETFE, namely conveying the melted liquid ETFE to a working head of coating equipment by using a hydraulic or liquid electric pump device; conveying the solar assembly subjected to laminating treatment to coating equipment through a conveying belt, and starting coating work when a working head enters a set working starting point after the solar assembly enters the coating equipment; s7, after coating and cooling, carrying out EL test on the solar module; s8, laser cutting to a target specification; s9, completing the preparation of the component.
According to a further arrangement of the present invention, in S6, the working head of the coating device moves in two dimensions to perform coating; the coated area is equal to the solar module area.
According to a further configuration of the present invention, in S6, the hydraulic or liquid electric pumping device is further used for controlling the thickness of the ETFE coating.
According to the further arrangement of the invention, the thickness of the solar TPT back plate is 2-3 mm.
According to the further arrangement of the invention, the solar cell is a crystalline silicon cell.
According to the invention, the thickness of the EVA adhesive film is 0.3-0.8 mm.
In conclusion, the invention has the following beneficial effects:
1. compared with the prior art, the ETFE is arranged on the solar module in a hot-melt coating mode, so that the defects of wrinkling, displacement and the like of the ETFE film can be completely avoided, the adhesion between the ETFE layer and the EVA film is improved, the ETFE and the EVA film form a whole, and the service life of the solar module is prolonged.
2. In the invention, the coating thickness of ETFE can be controlled by a hydraulic or liquid electric pump device, thereby being beneficial to saving materials, avoiding waste, being more convenient and flexible in use, and effectively improving the light transmittance of the solar module under the condition of better processing and forming performance, material mechanical performance, barrier performance and aging resistance, thereby having good heat dissipation and cooling effects.
Drawings
Fig. 1 is a block flow diagram in an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example (b): as shown in fig. 1, a novel process for coating a solar flexible module comprises: s1, preparing the required materials: solar TPT back sheets, solar cell sheets, EVA adhesive films (ethylene-vinyl acetate copolymer) and ETFE (ethylene-tetrafluoroethylene copolymer);
s2, laminating, namely sequentially laminating the solar TPT back plate, the EVA adhesive film, the solar cell piece and the EVA adhesive film from the bottom layer to the top;
in this embodiment, the thickness of the solar TPT back sheet is 2-3mm, the thickness of the EVA adhesive film is 0.3-0.8mm, and the solar cell is a crystalline silicon cell.
S3, performing EL test before lamination, and detecting whether the solar module is damaged or not in the lamination process by an EL detector;
and S4, laminating, namely putting the solar module subjected to the EL test on a feeding table of a laminating machine, and packaging the module in an environment of 142 ℃, wherein the packaging time needs to ensure that the crosslinking degree of an EVA adhesive film is over 70 percent, so that the solar TPT back plate and the solar cell can be tightly pressed together.
S5, melting the ETFE, putting the ETFE into a heating device, heating to 275 ℃ to melt the ETFE into liquid, and vacuumizing while melting to ensure that the melted ETFE liquid has no bubbles;
s6, coating the ETFE, namely conveying the melted liquid ETFE to a working head of coating equipment by using a hydraulic or liquid electric pump device;
the solar module after lamination processing is conveyed to a coating device through a conveyor belt, after the solar module enters the coating device, a working head enters a set working starting point, namely the edge of the solar module, coating work is started, and due to the fact that vacuumizing processing is carried out during melting, ETFE liquid is free of bubbles, so that the solar module can be uniformly coated, and attention needs to be paid to the fact that the crosslinking degree of an EVA adhesive film can be increased to 75-85% when the coating temperature is high.
In this embodiment, hydraulic pressure or liquid electric pump device still are used for controlling the coated thickness of ETFE to be favorable to material saving, avoid extravagant, the working head of coating equipment removes in the two-dimensional direction and coats, and the coating area equals the solar energy component area, through the mode of hot melt coating, has improved the adhesion of ETFE layer with the EVA membrane, makes ETFE and EVA membrane form a whole, is favorable to improving solar energy component's life-span.
S7, after the coating and cooling, carrying out EL test on the solar module, and detecting abnormal phenomena such as hidden cracks, fragments, rosin joints, black-heart black-edge grid breakage or single-chip batteries with different conversion efficiencies caused by module defects and the like without damage;
s8, laser cutting to a target specification;
s9, completing the preparation of the component.
The specific working process and principle are as follows: the ETFE is arranged on the solar module in a hot-melt coating mode, so that the defects of wrinkling, displacement and the like of the ETFE film are avoided, the adhesion between the ETFE layer and the EVA film is improved, the ETFE and the EVA film form a whole, the service life of the solar module is prolonged, the coating thickness of the ETFE is controlled through a hydraulic or liquid electric pump device, materials are saved, waste is avoided, the use is more convenient and flexible, the light transmittance of the solar module can be effectively improved under the condition that the solar module has better processing and forming performance, material mechanical performance, barrier performance and ageing resistance, and good heat dissipation and temperature reduction effects are achieved.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910568531.3A CN110299419B (en) | 2019-06-27 | 2019-06-27 | A new type of coating process for solar flexible modules |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910568531.3A CN110299419B (en) | 2019-06-27 | 2019-06-27 | A new type of coating process for solar flexible modules |
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| CN110299419A CN110299419A (en) | 2019-10-01 |
| CN110299419B true CN110299419B (en) | 2021-04-06 |
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| CN114864718B (en) * | 2022-06-09 | 2023-11-10 | 浙江贝盛光伏股份有限公司 | Solar module sectional lamination method and laminating machine |
| CN115274925A (en) * | 2022-07-26 | 2022-11-01 | 宣城开盛新能源科技有限公司 | A pretreatment method and system for improving the defects of copper indium gallium selenide photovoltaic flexible components |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009108874A3 (en) * | 2008-02-27 | 2010-01-07 | Solar Roofing Systems, Inc. | Method of manufacturing photovoltaic roofing tiles and photovoltaic rofing tiles |
| CN102456766A (en) * | 2010-10-14 | 2012-05-16 | 无锡尚德太阳能电力有限公司 | Preparation method of solar cell module and solar cell module prepared by preparation method |
| WO2013033313A1 (en) * | 2011-09-02 | 2013-03-07 | Arkema Inc. | Multilayer polyvinylidene films structures |
| CN104966752A (en) * | 2015-04-17 | 2015-10-07 | 詹兴华 | High-electric energy production crystalline silicon solar cell assembly and manufacturing technology thereof |
| CN106549074A (en) * | 2016-12-08 | 2017-03-29 | 上海空间电源研究所 | A kind of thin silicon solar module near space environment and preparation method thereof |
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- 2019-06-27 CN CN201910568531.3A patent/CN110299419B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009108874A3 (en) * | 2008-02-27 | 2010-01-07 | Solar Roofing Systems, Inc. | Method of manufacturing photovoltaic roofing tiles and photovoltaic rofing tiles |
| CN102456766A (en) * | 2010-10-14 | 2012-05-16 | 无锡尚德太阳能电力有限公司 | Preparation method of solar cell module and solar cell module prepared by preparation method |
| WO2013033313A1 (en) * | 2011-09-02 | 2013-03-07 | Arkema Inc. | Multilayer polyvinylidene films structures |
| CN104966752A (en) * | 2015-04-17 | 2015-10-07 | 詹兴华 | High-electric energy production crystalline silicon solar cell assembly and manufacturing technology thereof |
| CN106549074A (en) * | 2016-12-08 | 2017-03-29 | 上海空间电源研究所 | A kind of thin silicon solar module near space environment and preparation method thereof |
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