Solar battery backboard taking modified polyvinylidene fluoride alloy layer as weathering protective layer

A technology of polyvinylidene fluoride and solar cells, which is applied in the direction of synthetic resin layered products, circuits, electronic equipment, etc., can solve the problems of not being able to be used directly, low surface energy, etc., achieve low cost, increase surface energy, and good weather resistance Effect

Active Publication Date: 2009-11-18
SHANGHAI HIUV NEW MATERIALS
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Problems solved by technology

However, PVDF has low surface en

Method used

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  • Solar battery backboard taking modified polyvinylidene fluoride alloy layer as weathering protective layer

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Embodiment Construction

[0022] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0023] See figure 1 As shown, the solar battery back sheet using the modified polyvinylidene fluoride alloy layer as the weather-resistant protective layer of the present invention includes a first weather-resistant layer 1, a first adhesive layer 2, a structural reinforcement layer 3, a second adhesive layer 4 and The second weather-resistant layer 5, the first weather-resistant layer 1 is bonded to the structural reinforcement layer 3 through the first adhesive layer 2, and the structural reinforcement layer 3 is bonded to the structural reinforcement layer 4 through the second bonding layer 4. The second weather-resistant layer 5, the first weather-resistant layer 1 and the second weather-resistant layer 5 are polyvinylidene fluoride (PVDF) alloy layers modified with inorganic materials.

[0024] Preferably, the inorganic material is sele...

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Abstract

The invention relates to a solar battery backboard which takes a modified polyvinylidene fluoride alloy layer as a weathering protective layer. The backboard comprises the following components according to the adhesion in turn: a weathering layer, an adhesive layer, a structure-enhancing layer, a second adhesive layer and a second weathering layer; wherein, the first weathering layer and the second weathering layer are the polyvinylidene fluoride alloy layers modified by inorganic materials; 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 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 fine performance, conforms to the requirement of backboard, and has important significance on solar energy industry.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to the technical field of solar cell back sheets, and specifically refers to a solar cell back sheet with a modified polyvinylidene fluoride alloy layer as a weather-resistant protective layer. 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 commonly used structures are TPT structure and TPE structure, where T refers to DuPont’s Tedlar film, which is composed of polyvinyl fluoride (PVF), P refers to polyethylene terephthalate (PET) film, and E refers to vinyl- Vinyl acetate resin (EVA) film, therefore, the TPT structure refers to the PVF film / PET film / PVF film structure, the TPE structure refers to the PVF film / PET film / EVA film structure, and the three layers of films are bonded with a suitable adhesive. A typi...

Claims

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Application Information

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IPC IPC(8): H01L31/0203H01L31/048B32B7/12B32B27/18B32B27/30
CPCB32B27/30B32B27/20Y02E10/50H01L31/048B32B27/36B32B7/12B32B27/08B32B27/18B32B27/304B32B2250/24B32B2307/712B32B2457/12H01L31/049
Inventor 李民
Owner SHANGHAI HIUV NEW MATERIALS
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