Photovoltaic solar cell composite backboard, preparation method and assembly thereof

A technology for solar cells and back sheets, applied in chemical instruments and methods, synthetic resin layered products, lamination devices, etc., can solve the problems of weather resistance of solar cell back sheets, weak water vapor barrier insulating back sheet strength, etc. Achieve the effect of high bond strength, lower production cost, and reduced use

Active Publication Date: 2015-08-19
JOLYWOOD SUZHOU SUNWATT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the weather resistance, water vapor barrier, insulation and backboard strength of the solar battery backsheet are relatively weak

Method used

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  • Photovoltaic solar cell composite backboard, preparation method and assembly thereof
  • Photovoltaic solar cell composite backboard, preparation method and assembly thereof
  • Photovoltaic solar cell composite backboard, preparation method and assembly thereof

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention, rather than limiting it in any way.

[0037] Such as figure 1As shown, this embodiment provides a photovoltaic solar cell composite back sheet, including an outer polyethylene terephthalate (PET) and polyester coextrusion layer 1, an intermediate adhesive layer 2, an inner layer of poly Ethylene (PE) and olefin polymer co-extrusion layer 3; the thickness of the outer polyethylene terephthalate and polyester co-extrusion layer 1 is the same as that of the inner layer polyethylene and olefin polymer co-extrusion The thickness ratio of the exit layer 3 is 1:5˜16:1. The outer coextruded layer is mainly polyethylene terephthalate (PET) and coextruded with various polyesters, and the inner coextruded layer is mainly polyethylene (...

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Abstract

The invention relates to the field of solar cell backboards, and .provides a photovoltaic solar cell composite backboard, which is characterized by including an outer layer polyethylene glycol terephthalate and polyester co-extruded layer, an intermediate bonding layer, and an inner layer polyethylene and olefin polymer co-extruded layer. According to the invention, the melt coextrusion outer layer and inner layer respectively select PET and PE as the main body, select polymers with similar structure but different properties for complementation, melting coextrusion is conducted, polymer molecules interdiffuse, the bonding strength is large, and the melt coextruded layer enables endow the backboard with higher peel strength, excellent weatherability, water vapor barrier properties, insulativity and other performances. Thus, the photovoltaic solar cell composite backboard has good comprehensive properties.

Description

technical field [0001] The invention relates to the field of solar battery backplanes, in particular to a photovoltaic solar battery composite backplane, a preparation method and components thereof. Background technique [0002] The solar cell module is a stacked structure, which is composed of panels, glue, cells, glue, and back sheet. The back sheet is the most important material in the solar cell module except the cell sheet. The packaging material that is in contact with the external environment on a large area supports and protects the cells in the module. Generally, the service life of solar cell modules is required to be more than 25 years. Such a long service life requires strict restrictions on the quality of the solar cell module packaging material backsheet. The backsheet must have reliable weather resistance, water vapor barrier and insulation. In the traditional composite backsheet, adhesives are used between the layers in the multilayer composite process. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B7/12B32B37/15
Inventor 林建伟夏文进张育政
Owner JOLYWOOD SUZHOU SUNWATT
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