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Crosslinkable edge sealant used for photovoltaic module

A sealant and frame technology, applied in the field of solar cell modules, can solve problems such as long curing time, environmental problems, and high manufacturing costs

Inactive Publication Date: 2013-06-19
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only results in higher manufacturing costs but also creates environmental concerns
Second, silicone glue requires a long (at least about 6 hours) curing time, which reduces production efficiency
Also, when using silicone adhesives, there is often a release of MEK which can cause odor issues
Finally, when using silicone glue, there will be too much loss, resulting in higher manufacturing costs

Method used

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  • Crosslinkable edge sealant used for photovoltaic module
  • Crosslinkable edge sealant used for photovoltaic module
  • Crosslinkable edge sealant used for photovoltaic module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] Material:

[0084] Cross-linkable blend sheet-1 (CBS-1): A 0.5 mm thick polymer sheet, which can be prepared as follows. First, a dry blend of ionomer and ethylene copolymer (60:40 by weight) was prepared in a cement mixer. Then, the dry blend was introduced into a cast film machine (manufactured by Davis Standard) to make a polymer sheet, wherein the extrusion temperature was set at 120° C. and the line speed was set at 2 m / min. The ionomer used herein is a sodium ionomer (which has a melt flow rate of 10 g / 10 min and is derived from the use of Na + Cationic neutralization of 37% ethylene (89% by weight) / methacrylic acid (11% by weight) precursor acid copolymer). The ethylene copolymer used herein is an ethylene / n-butyl acrylate / glycidyl methacrylate copolymer having a melt flow rate of 12 g / 10 min and containing ethylene (66.75% by weight), n-butyl acrylate (28 % by weight) and copolymerized units of glycidyl methacrylate (5.25% by weight).

[0085] Cross-...

Embodiment E1-E2

[0093] First, the solar cell module with the structure "glass sheet / EVA sheet / solar cell / EVA sheet / TPT sheet" will be processed by placing the assembly at 125°C in a vacuum laminator (manufactured by Meier Vakuum Technik GMBH Model Meier Icolam 10 / 08) for 5 minutes. Each solar cell module thus prepared will have dimensions of 172x152 mm.

[0094] In E1 and E2, a 1.5 cm wide sealing strip prepared from CBS-1 or CBS-2, respectively, was placed around the outer edge of the solar cell module. Thereafter, two 172 mm long aluminum frame strips and two 152 mm long aluminum frame strips were locked around the outer edge of the solar cell module covered by the sealing strip. The entire assembly was then heated in a 150°C oven for 15 minutes to form the final framed solar cell module.

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Abstract

The invention discloses a crosslinkable edge sealant used for a photovoltaic module. The invention provides a solar cell module with a frame. The solar cell module with the frame comprises a plate-shaped solar cell module, a framework body with a ditch groove part and sealant materials, wherein the plate-shaped solar cell module comprises a solar cell assembly which is formed by one solar cell or more than one solar cells which are mutually connected in an electric mode, the outer edge of the solar cell module is connected in the framework body, the sealant materials are used for being filled in the space between the outer edge of the solar cell module and the ditch groove part of the framework body, and the sealant materials are made of crosslinkable blending compositions of ionomer and vinyl copolymer.

Description

technical field [0001] The present invention relates to framed solar cell modules using novel edge sealing materials. Background technique [0002] Currently, silicone glue is often used as an edge sealant to bond the aluminum frame around the solar cell module. Using silicone glue as an edge sealing material has a number of disadvantages. First, after applying the silicone glue, excess residue is often left on the module surface and needs to be wiped off. This not only results in higher manufacturing costs but also causes environmental problems. Second, silicone glue requires a long (at least about 6 hours) curing time, which reduces production efficiency. In addition, when silicone glue is used, there is often a release of methyl ethyl ketone oxime, which can cause odor problems. Finally, when using silicone glue, there will be too much loss, resulting in higher manufacturing costs. Therefore, there is still a need to develop a new edge sealing material that is enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048C09K3/10H01L31/18
CPCB32B17/10018B32B17/10302B32B17/10788B32B2266/0235H01L31/0481H01L31/0488H02S30/10Y02E10/50
Inventor 张大为G.W.普雷琼张家维赵民骥K.J.利里
Owner EI DU PONT DE NEMOURS & CO