CN110113002B - Method for testing ultraviolet resistance of bonding surface of photovoltaic back plate - Google Patents
Method for testing ultraviolet resistance of bonding surface of photovoltaic back plate Download PDFInfo
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- CN110113002B CN110113002B CN201810297350.7A CN201810297350A CN110113002B CN 110113002 B CN110113002 B CN 110113002B CN 201810297350 A CN201810297350 A CN 201810297350A CN 110113002 B CN110113002 B CN 110113002B
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- back plate
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- bonding surface
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000006750 UV protection Effects 0.000 title claims abstract description 15
- 239000002313 adhesive film Substances 0.000 claims abstract description 30
- 239000011521 glass Substances 0.000 claims abstract description 12
- 238000010030 laminating Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 13
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 13
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 13
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 12
- 229920000728 polyester Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 229920002635 polyurethane Polymers 0.000 claims description 11
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 5
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 5
- 229920006267 polyester film Polymers 0.000 claims description 5
- 239000002033 PVDF binder Substances 0.000 claims description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 47
- 239000000463 material Substances 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920006264 polyurethane film Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 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
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/049—Protective back sheets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
-
- 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 invention discloses a method for testing ultraviolet resistance of a bonding surface of a photovoltaic backboard, which comprises the following steps: 1) completely heating the photovoltaic glass and the ultraviolet non-stop adhesive film, vacuumizing and laminating to obtain a two-layer connecting body of the photovoltaic glass and the ultraviolet non-stop adhesive film; 2) vacuumizing and jointing the bonding surface of the photovoltaic back plate and the end surface of the ultraviolet non-stop adhesive film in the two layers of connecting bodies; 3) fixing the three-layer connecting body in an ultraviolet test box, and carrying out ultraviolet irradiation on the bonding surface of the photovoltaic back plate in the three-layer connecting body; 4) taking out the three-layer connecting body after the ultraviolet irradiation treatment, heating to 80-120 ℃, and separating the photovoltaic back plate from the ultraviolet non-stop adhesive film within 30 seconds; 5) the separated photovoltaic backsheet was tested for mechanical properties, color change and composition. The method is very simple and convenient to operate, does not influence the test result, and can effectively shorten the test time.
Description
Technical Field
The invention relates to the technical field of photovoltaic backboard performance testing, in particular to a method for testing ultraviolet resistance of a bonding surface of a photovoltaic backboard.
Background
At present, in the technical field of solar photovoltaic back panel testing, the composite back panel mainly has a polyester/polyurethane/polyester film/linear low-density polyethylene composite structure, a polyvinylidene fluoride/polyurethane/polyester/ethylene vinyl acetate composite structure or a polyvinyl fluoride/polyurethane/polyester/ethylene vinyl acetate composite structure.
The back sheet has excellent weather resistance and can protect the solar photovoltaic module from being corroded by moisture, ultraviolet rays and chemical gases. Among these, the uv test is an important indicator for characterizing the performance of such back sheets. Linear low density polyethylene, ethylene vinyl acetate, are very good thermoplastic materials for the backing sheet adhesive side. Due to the factors of good processability, high cost performance and the like, the material is always the preferred bonding surface material of the photovoltaic back panel material.
The packaging structure of the solar photovoltaic module is a sandwich structure of a photovoltaic stripping/ultraviolet non-cut EVA (ethylene vinyl acetate) adhesive film/solar ultraviolet cut adhesive film back plate. That is to say, the bonding surface of the back plate is in laminated bonding contact with the ultraviolet ray cut-off adhesive film. The test is carried out by simulating the practical application conditions of the moisture test and the ultraviolet resistance test, so that the back plate has scientificity and guidance, and the back plate is directly placed in the ultraviolet test box for carrying out the ultraviolet resistance test on the bonding surfaceThe aging test is not reasonable. The ultraviolet rays usually penetrate through the photovoltaic film, the ultraviolet non-cut EVA and the ultraviolet cut EVA and finally reach the back plate bonding surface, and the energy of the ultraviolet rays received by the power generation surface is about 120 mu W/cm after the photovoltaic module passes through 25 years through actual measurement and calculation2To 170. mu.W/cm2. Therefore, the bonding surface of the test backboard is directly exposed in the industry at present, so that the received ultraviolet energy reaches 300 mu W/cm2Is not reasonable. The weatherability of the material in the actual packaging situation is not well simulated.
The photovoltaic back plate is positioned on the back of the solar cell panel, plays a role in protecting and supporting the cell piece, and needs to have reliable insulativity, water resistance, aging resistance and the like. Most solar back panels have a three-layer structure, an outer protective layer has good environmental erosion resistance, a middle layer is a polyester film and has good insulating property and water resistance, and an inner layer has good adhesive property, is the main functional characteristic of the solar back panels and has inferior ultraviolet resistance.
At present, the ultraviolet resistance test method for investigating the back plate bonding surface material is generally as follows: a sheet back plate with a certain size is taken from a roll of back plate film, a test surface is marked, the sheet back plate is fixed in an ultraviolet test box by a clamp, an adhesive surface faces an ultraviolet lamp, the ultraviolet irradiation amount to be tested is set, the temperature is 60 +/-5 ℃, finally, the test box is opened to enable the test box to work until the ultraviolet irradiation is finished, a sample is taken out, and the performance of the sample is tested.
Disclosure of Invention
The invention aims to provide a method for testing ultraviolet resistance of a bonding surface of a photovoltaic back plate, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for testing ultraviolet resistance of a bonding surface of a photovoltaic back plate comprises the following steps:
1) completely heating the photovoltaic glass and the ultraviolet non-stop adhesive film to 145-160 ℃, and carrying out vacuum pumping treatment for 6-8 min and laminating treatment for 8-12 min to obtain a two-layer connecting body of the photovoltaic glass and the ultraviolet non-stop adhesive film;
2) when the temperature of the two layers of connecting bodies is 80-120 ℃, vacuumizing and laminating the bonding surface of the photovoltaic back plate and the end surface of the ultraviolet non-cut adhesive film in the two layers of connecting bodies to obtain the photovoltaic glass, the ultraviolet non-cut adhesive film and the three layers of connecting bodies of the photovoltaic back plate;
3) fixing the three-layer connecting body in an ultraviolet test box, wherein the bonding surface of the photovoltaic back plate in the three-layer connecting body faces an ultraviolet lamp, setting the ultraviolet irradiation amount to be tested, the temperature is 60 +/-5 ℃, starting the ultraviolet lamp in the ultraviolet test box, and performing ultraviolet irradiation on the bonding surface of the photovoltaic back plate in the three-layer connecting body;
4) taking out the three-layer connecting body after the ultraviolet irradiation treatment, heating to 80-120 ℃, and separating the photovoltaic back plate from the ultraviolet non-stop adhesive film within 30 seconds;
5) the separated photovoltaic backsheet was tested for mechanical properties, color change and composition.
As a further scheme of the invention: the ultraviolet irradiation dose in the step 3) is 120-170 mu W/cm2。
As a further scheme of the invention: the photovoltaic back plate is a composite back plate formed by a polyester layer, a polyurethane layer, a polyester film and a linear low-density polyethylene layer.
As a further scheme of the invention: the photovoltaic back plate is a composite back plate consisting of a polyvinylidene fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
As a further scheme of the invention: the photovoltaic back plate is a composite back plate consisting of a polyvinyl fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
Compared with the prior art, the invention has the beneficial effects that: in the method, the three layers of connecting bodies adopt the ultraviolet non-stop adhesive film, and the ultraviolet can penetrate through and reach the bonding surface of the photovoltaic backboard, so that the accumulation of the ultraviolet on the bonding surface of the photovoltaic backboard is accelerated, and the test time is shortened; the three-layer connecting body adopts a vacuum laminating structure of the photovoltaic back plate and the ultraviolet non-stop adhesive film, so that other chemical reactions caused by strong oxidation of a large amount of ozone in the ultraviolet test box can be well avoided, and misjudgment caused by the introduction of results of non-test factors can be well avoided; after the test is finished, the photovoltaic backboard can be separated from the ultraviolet non-stop adhesive film within 30 seconds when being heated to 80-120 ℃, so that the photovoltaic backboard film is convenient to take down, the mechanical property, color change, components and the like of the photovoltaic backboard film are further analyzed, and the method is very simple and convenient to operate and does not influence the test result.
Drawings
Fig. 1 is a schematic structural view of a three-layer coupling body.
In the figure: 1-photovoltaic glass, 2-ultraviolet non-stop adhesive film and 3-photovoltaic backboard.
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.
Referring to fig. 1, the present invention provides a technical solution: a method for testing ultraviolet resistance of a bonding surface of a photovoltaic back plate comprises the following steps:
1) completely heating the photovoltaic glass 1 and the ultraviolet non-stop adhesive film 2 to 145-160 ℃, and carrying out vacuum pumping treatment for 6-8 min and laminating treatment for 8-12 min to obtain a two-layer connecting body of the photovoltaic glass 1 and the ultraviolet non-stop adhesive film 2;
2) when the temperature of the two layers of connecting bodies is 80-120 ℃, vacuumizing and laminating the bonding surface of the photovoltaic back plate 3 and the end surface of the ultraviolet non-cut adhesive film 2 in the two layers of connecting bodies to obtain the photovoltaic glass 1, the ultraviolet non-cut adhesive film 2 and the three layers of connecting bodies of the photovoltaic back plate 3;
3) fixing the three-layer connecting body in an ultraviolet test box, wherein the bonding surface of the photovoltaic back plate 3 in the three-layer connecting body faces an ultraviolet lamp, setting the ultraviolet irradiation amount to be tested, the temperature is 60 +/-5 ℃, starting the ultraviolet lamp in the ultraviolet test box, and performing ultraviolet irradiation on the bonding surface of the photovoltaic back plate 3 in the three-layer connecting body;
4) taking out the three-layer connecting body after the ultraviolet irradiation treatment, heating to 80-120 ℃, and separating the photovoltaic back plate 3 from the ultraviolet non-stop adhesive film 2 within 30 seconds;
5) the separated photovoltaic backsheet 3 was tested for mechanical properties, color change and composition.
Wherein the ultraviolet irradiation dose in the step 3) is 120-170 mu W/cm2。
The photovoltaic back plate 3 can adopt a composite back plate consisting of a polyester layer, a polyurethane layer, a polyester film and a linear low-density polyethylene layer.
The photovoltaic back plate 3 can also adopt a composite back plate consisting of a polyvinylidene fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
The photovoltaic back plate 3 can also adopt a composite back plate consisting of a polyvinyl fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
The conventional test method has the following disadvantages: 1. the bonding surface of the photovoltaic back plate 3 sample is exposed in the air; 2. the bonding surface of the photovoltaic back plate 3 sample is directly irradiated by ultraviolet rays; 3. the strong oxidation effect of ozone generated in the ultraviolet test box on the inner layer of the photovoltaic backboard 3 causes damage and incompleteness of the bonding surface of the photovoltaic backboard 3, and the next analysis test cannot be carried out.
In the method, the ultraviolet non-stop adhesive film 2 is adopted in the three-layer connecting body, and the ultraviolet rays can penetrate through the ultraviolet non-stop adhesive film and reach the bonding surface of the photovoltaic back plate 3, so that the accumulation of the ultraviolet rays on the bonding surface of the photovoltaic back plate 3 is accelerated, and the testing time is shortened; the three-layer connecting body adopts a vacuum laminating structure of the photovoltaic back plate 3 and the ultraviolet non-stop adhesive film 2, so that other chemical reactions caused by strong oxidation of a large amount of ozone in an ultraviolet test box can be well avoided, and misjudgment caused by introducing results of non-test factors can be well avoided; after the test is finished, the photovoltaic back plate 3 can be separated from the ultraviolet non-stop adhesive film 2 within 30 seconds when being heated to 80-120 ℃, so that the film of the photovoltaic back plate 3 can be conveniently taken down, the mechanical property, the color change, the components and the like of the film can be further analyzed, and the method is very simple and convenient to operate and does not influence the test result.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A method for testing ultraviolet resistance of a bonding surface of a photovoltaic backboard is characterized by comprising the following steps: the method comprises the following steps:
1) completely heating the photovoltaic glass and the ultraviolet non-stop adhesive film to 145-160 ℃, and carrying out vacuum pumping treatment for 6-8 min and laminating treatment for 8-12 min to obtain a two-layer connecting body of the photovoltaic glass and the ultraviolet non-stop adhesive film;
2) when the temperature of the two layers of connecting bodies is 80-120 ℃, vacuumizing and laminating the bonding surface of the photovoltaic back plate and the end surface of the ultraviolet non-cut adhesive film in the two layers of connecting bodies to obtain the photovoltaic glass, the ultraviolet non-cut adhesive film and the three layers of connecting bodies of the photovoltaic back plate;
3) fixing the three-layer connecting body in an ultraviolet test box, wherein the bonding surface of the photovoltaic back plate in the three-layer connecting body faces an ultraviolet lamp, setting the ultraviolet irradiation amount to be tested, the temperature is 60 +/-5 ℃, starting the ultraviolet lamp in the ultraviolet test box, and performing ultraviolet irradiation on the bonding surface of the photovoltaic back plate in the three-layer connecting body;
4) taking out the three-layer connecting body after the ultraviolet irradiation treatment, heating to 80-120 ℃, and separating the photovoltaic back plate from the ultraviolet non-stop adhesive film within 30 seconds;
5) the separated photovoltaic backsheet was tested for mechanical properties, color change and composition.
2. The method for testing ultraviolet resistance of the bonding surface of the photovoltaic back plate as claimed in claim 1, wherein the method comprises the following steps: the photovoltaic back plate is a composite back plate formed by a polyester layer, a polyurethane layer, a polyester film and a linear low-density polyethylene layer.
3. The method for testing ultraviolet resistance of the bonding surface of the photovoltaic back plate as claimed in claim 1, wherein the method comprises the following steps: the photovoltaic back plate is a composite back plate consisting of a polyvinylidene fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
4. The method for testing ultraviolet resistance of the bonding surface of the photovoltaic back plate as claimed in claim 1, wherein the method comprises the following steps: the photovoltaic back plate is a composite back plate consisting of a polyvinyl fluoride layer, a polyurethane layer, a polyester layer and an ethylene vinyl acetate layer.
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CN201810297350.7A CN110113002B (en) | 2018-03-30 | 2018-03-30 | Method for testing ultraviolet resistance of bonding surface of photovoltaic back plate |
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CN201810297350.7A CN110113002B (en) | 2018-03-30 | 2018-03-30 | Method for testing ultraviolet resistance of bonding surface of photovoltaic back plate |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202742768U (en) * | 2012-06-21 | 2013-02-20 | 宁波长阳科技有限公司 | Backing sheet of solar battery |
CN202994626U (en) * | 2012-10-26 | 2013-06-12 | 常州华阳光伏检测技术有限公司 | Ultraviolet aging test box with high detection efficiency |
KR20130135522A (en) * | 2012-06-01 | 2013-12-11 | 도레이첨단소재 주식회사 | Back sheet for a solarcell module and preparing process thereof |
CN207423765U (en) * | 2017-11-07 | 2018-05-29 | 苏州顺创新能源科技有限公司 | A kind of solar energy backboard film ageing test apparatus |
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US20140272153A1 (en) * | 2013-03-13 | 2014-09-18 | William J. Buehne | Free standing polymeric films |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130135522A (en) * | 2012-06-01 | 2013-12-11 | 도레이첨단소재 주식회사 | Back sheet for a solarcell module and preparing process thereof |
CN202742768U (en) * | 2012-06-21 | 2013-02-20 | 宁波长阳科技有限公司 | Backing sheet of solar battery |
CN202994626U (en) * | 2012-10-26 | 2013-06-12 | 常州华阳光伏检测技术有限公司 | Ultraviolet aging test box with high detection efficiency |
CN207423765U (en) * | 2017-11-07 | 2018-05-29 | 苏州顺创新能源科技有限公司 | A kind of solar energy backboard film ageing test apparatus |
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