CN102323243A - Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly - Google Patents
Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly Download PDFInfo
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- CN102323243A CN102323243A CN201110163389A CN201110163389A CN102323243A CN 102323243 A CN102323243 A CN 102323243A CN 201110163389 A CN201110163389 A CN 201110163389A CN 201110163389 A CN201110163389 A CN 201110163389A CN 102323243 A CN102323243 A CN 102323243A
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Abstract
The invention relates to a structure and method for testing the light transmittance of a laminated EVA (Ethylene Vinyl Acetate) film used for a photovoltaic assembly. The structure for testing the light transmittance of the laminated EVA film comprises glass, face-side EVA film, a cell, back-side EVA film and a backplate which are sequentially stacked, wherein a rough surface of the EVA faces the cell; for the face-side EVA film adjacent to the glass, the upper and the lower surfaces of the face-side EVA are respectively isolated by adopting release films to guarantee that two sides of the EVA film are not in direct contact and adhered with other substances; and the release films are stripped off after lamination to obtain the laminated EVA film, and the light transmittance of a smooth surface of the EVA film is directly tested. The method can easily and conveniently test the light transmittance of the laminated EVA film and verify the superior performance of the EVA film; in addition, with the adoption of the method, the transmissibility of the EVA film at each segment of light spectrum can be obtained from a light transmittance spectrogram, the light transmittance performance of the EVA film can be very accurately, conveniently and quickly known in a direct-viewing way.
Description
Technical field
The present invention relates to a kind of photovoltaic module with the EVA lamination after transmittance test structure and method.
Background technology
EVA is the critical material of potting in the photovoltaic module; It has anti-reflective glass, uvioresistant, light aging resisting, cohesiveness good, can bear that atmosphere variation, electrical isolation, isolation hostile environment, low steam see through, effective heat conductivility, in links such as photovoltaic module processing and manufacturing, storage, transportation, installation and operations necessary support structure and positioning action is provided.
Photovoltaic module the most important thing is to accept solar radiation and obtains generated output, thereby the transmittance of EVA seems particularly important.
Existing method of testing " GB 2140-80 transparent plastic transmittance and mist degree test method ": the method is the test to material itself; Use EVA for photovoltaic module; Material itself can use this method directly to test; But because need lamination in the assembly process, the transmittance of EVA needs to test behind the lamination.Because the high-adhesion of EVA can't be peeled off out from assembly behind the lamination, tests its transmittance.
Summary of the invention
Technical matters to be solved by this invention is: the transmittance test structure after providing a kind of photovoltaic module with the EVA lamination, conveniently carry out the transmittance test to the EVA behind the lamination.
The technical solution adopted for the present invention to solve the technical problems is: a kind of photovoltaic module with the EVA lamination after the test structure of transmittance; Comprise that glass, positive EVA, battery sheet, back side EVA, backboard stack gradually; The EVA hair side is isolated with the PET mould release membrance respectively at the positive EVA upper and lower surface adjacent with glass facing to the battery sheet.
The transmittance method of testing was after a kind of photovoltaic module used the EVA lamination: the upper and lower surface at positive EVA adopts stability PET mould release membrance extremely strong, that fissility is fabulous to isolate respectively; Guarantee that the eva film two sides does not directly contact with other materials; Peel off mould release membrance out behind the lamination; Obtain the EVA behind the lamination, with the transmittance of its light face of spectrophotometer test.
The invention has the beneficial effects as follows: the method can the test lamination of simple and convenient after the transmittance of EVA, the premium properties of check eva film.In addition, the method can also obtain the response of EVA to each section spectrum from the spectrogram of transmittance, intuitively understands the light transmission of EVA.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified;
Fig. 1: structural representation of the present invention;
Among the figure, 1. glass, the positive EVA of 2-1., 3. battery sheet, 2-2. back side EVA, 4. backboard, 5.PET mould release membrance.
Embodiment
As shown in Figure 1, the transmittance test structure of a kind of photovoltaic module after with the EVA lamination comprises that glass 1, positive EVA2-1, battery sheet 3, back side EVA2-2, backboard 4 stack gradually; The EVA hair side is facing to the battery sheet; Upper and lower surface at positive EVA2-1 adopts stability PET mould release membrance 5 extremely strong, that fissility is good to isolate respectively, and assurance eva film two sides does not directly contact with other materials and bonds, and peels off mould release membrance 5 out behind the lamination; Obtain the EVA behind the lamination, test the transmittance of its light face.
The method is tested the transmittance of EVA through spectrophotometer, and method is convenient and swift, very accurate.
Claims (5)
- A photovoltaic module with the EVA lamination after the transmittance test structure; Comprise glass (1), positive EVA (2-1), battery sheet (3); Back side EVA (2-2), backboard (4) stack gradually, and it is characterized in that: use mould release membrance (5) to isolate respectively at described positive EVA (2-1) upper and lower surface adjacent with glass.
- Photovoltaic module described in claim 1 with the EVA lamination after the transmittance test structure, it is characterized in that mould release membrance (5) can be the PET material.
- A photovoltaic module with the EVA lamination after the transmittance method of testing; It is characterized in that: the upper and lower surface at positive EVA (2-1) adopts stability mould release membrance (5) extremely strong, that fissility is good to isolate respectively; Guarantee that the eva film two sides does not directly contact with other materials; Peel off mould release membrance (5) out behind the lamination, obtain the EVA behind the lamination, test its transmittance.
- Photovoltaic module described in claim 3 with the EVA lamination after the transmittance method of testing, it is characterized in that mould release membrance (5) can be the PET material.
- Photovoltaic module described in claim 3 with the EVA lamination after the transmittance method of testing, it is characterized in that can be through the transmittance behind the spectrophotometer test EVA lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110163389A CN102323243A (en) | 2011-06-17 | 2011-06-17 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110163389A CN102323243A (en) | 2011-06-17 | 2011-06-17 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
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| CN102323243A true CN102323243A (en) | 2012-01-18 |
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| CN201110163389A Pending CN102323243A (en) | 2011-06-17 | 2011-06-17 | Structure and method for testing light transmittance of laminated EVA (Ethylene Vinyl Acetate) film used for photovoltaic assembly |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018182A (en) * | 2012-12-20 | 2013-04-03 | 东莞南玻光伏科技有限公司 | Testing method of reflectivity of back board and EVA assembly in photovoltaic module |
| CN103033455A (en) * | 2012-12-12 | 2013-04-10 | 东莞南玻光伏科技有限公司 | Permeable rate test method of solar photovoltaic assembly |
| CN103048120A (en) * | 2012-12-21 | 2013-04-17 | 东莞南玻光伏科技有限公司 | Reflectivity test method for solar photovoltaic component |
| CN107907509A (en) * | 2017-11-24 | 2018-04-13 | 谢育枝 | A kind of method for examining solar cell package material EVA light transmittances |
| CN108155259A (en) * | 2017-12-18 | 2018-06-12 | 太原理工大学 | The isolation membrane technology that a kind of photovoltaic module is stacked with glass |
| CN109884000A (en) * | 2019-02-28 | 2019-06-14 | 天津英利新能源有限公司 | A kind of degree of cross linking test curve fitting formula method and degree of cross linking detection method |
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| CN101591517A (en) * | 2009-06-30 | 2009-12-02 | 番禺南沙殷田化工有限公司 | A kind of optical adhesive and preparation method thereof |
| US20100068421A1 (en) * | 2008-09-17 | 2010-03-18 | 3M Innovative Properties Company | Light diffusive pressure sensitive adhesive |
| CN101740651A (en) * | 2009-12-11 | 2010-06-16 | 东方日升新能源股份有限公司 | Laminated structure and laminating technology of solar panel component |
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2011
- 2011-06-17 CN CN201110163389A patent/CN102323243A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100068421A1 (en) * | 2008-09-17 | 2010-03-18 | 3M Innovative Properties Company | Light diffusive pressure sensitive adhesive |
| CN101591517A (en) * | 2009-06-30 | 2009-12-02 | 番禺南沙殷田化工有限公司 | A kind of optical adhesive and preparation method thereof |
| CN101740651A (en) * | 2009-12-11 | 2010-06-16 | 东方日升新能源股份有限公司 | Laminated structure and laminating technology of solar panel component |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033455A (en) * | 2012-12-12 | 2013-04-10 | 东莞南玻光伏科技有限公司 | Permeable rate test method of solar photovoltaic assembly |
| CN103018182A (en) * | 2012-12-20 | 2013-04-03 | 东莞南玻光伏科技有限公司 | Testing method of reflectivity of back board and EVA assembly in photovoltaic module |
| CN103048120A (en) * | 2012-12-21 | 2013-04-17 | 东莞南玻光伏科技有限公司 | Reflectivity test method for solar photovoltaic component |
| CN103048120B (en) * | 2012-12-21 | 2015-04-01 | 东莞南玻光伏科技有限公司 | Reflectivity test method for solar photovoltaic component |
| CN107907509A (en) * | 2017-11-24 | 2018-04-13 | 谢育枝 | A kind of method for examining solar cell package material EVA light transmittances |
| CN108155259A (en) * | 2017-12-18 | 2018-06-12 | 太原理工大学 | The isolation membrane technology that a kind of photovoltaic module is stacked with glass |
| CN108155259B (en) * | 2017-12-18 | 2020-03-06 | 太原理工大学 | Isolation film technology for stacking glass for photovoltaic module |
| CN109884000A (en) * | 2019-02-28 | 2019-06-14 | 天津英利新能源有限公司 | A kind of degree of cross linking test curve fitting formula method and degree of cross linking detection method |
| CN109884000B (en) * | 2019-02-28 | 2021-12-07 | 天津英利新能源有限公司 | Cross-linking degree test curve fitting formula method and cross-linking degree detection method |
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Application publication date: 20120118 |
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