Novel solar battery backboard

A kind of technology of solar cell and back sheet

Active Publication Date: 2009-11-18
SHANGHAI HIUV NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVDF has low surface energy and cannot be used directly

Method used

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  • Novel solar battery backboard

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Embodiment Construction

[0027] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0028] See figure 1 As shown, the novel solar battery back sheet of the present invention includes a weather-resistant layer 1, a first adhesive layer 2, a structural reinforcement layer 3, a second adhesive layer 4 and an adhesive reflective layer 5, and the weather-resistant layer 1 passes through the The first adhesive layer 2 is bonded to the structural reinforcement layer 3, the structural reinforcement layer 3 is bonded to the adhesive reflective layer 5 through the second bonding layer 4, and the weather-resistant layer 1 is modified by inorganic materials. The polyvinylidene fluoride (PVDF) alloy layer, and the adhesive reflective layer 5 is a white polyethylene (PE) layer.

[0029] Preferably, the polyvinylidene fluoride alloy layer is a blended plastic alloy layer of polyvinylidene fluoride and inorganic materials.

[0030] More p...

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Abstract

The invention relates to a novel solar battery backboard, which comprises the following components according to the adhesion in turn: a weathering layer, a first adhesive layer, a structure-enhancing layer, a second adhesive layer and an adhesive reflecting layer; wherein, the weathering layer is a polyvinylidene fluoride alloy layer modified by inorganic materials; the adhesive reflecting layer is a white polyethylene layer; preferably, the polyvinylidene fluoride alloy layer is a plastic alloy layer formed by the polyvinylidene fluoride and the inorganic materials with the thickness of 4-40 mum; the white polyethylene layer is a plastic alloy layer in which polyethylene is mixed with inorganic white pigment, anti-ultraviolet stabilizer and hot-oxygen ageing resistance stabilizer with the thickness of 10-300mum; the structure-enhancing layer is a polyethylene qlycol terephthalate layer; the first adhesive layer and the second adhesive layer can be one of the following three, namely, a polyurethane adhesive layer, an acrylic ester adhesive layer or an epoxy adhesive layer with the thickness of 1mum-30mum. The invention features novel structure, easily obtained materials, greatly reduced cost and good performance, conforms to the requirements of the backboard, and has important significance on solar energy industry.

Description

technical field [0001] The present invention relates to the technical field of solar cells, in particular to the technical field of solar cell backplanes, and specifically refers to a novel solar cell backplane. Background technique [0002] Due to the extensive use of solar cells, various countries and companies have proposed many structures for solar cell backplanes and applied for many patents accordingly. At present, the more commonly used structure is TPT structure, where T refers to DuPont's Tedlar film, the composition is polyvinyl fluoride (PVF), and P refers to polyethylene terephthalate (PET) film, so TPT refers to PVF / PET / PVF structure, the three layers of film are bonded with a suitable adhesive. A typical manufacturer of a TPT structure backplane is Isovolta in Europe. The main function of PVF film is weather resistance, which is only produced by DuPont of the United States in the world. The price is high and the supply is monopolized. In order to save costs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0203H01L31/048B32B27/08B32B27/18B32B7/12H01L31/049
CPCY02E10/50H01L31/049
Inventor 李民
Owner SHANGHAI HIUV NEW MATERIALS
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