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Novel solar cell backplate and preparation method thereof

A technology for solar cells and back sheets, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as power generation efficiency decline, loss of protection of components, delamination of bubbles, etc., to improve hydrolysis resistance, reduce product cost, The effect of good hydrolysis resistance

Inactive Publication Date: 2014-03-05
CHANGZHOU HUITIAN NEW MATERIALS
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Problems solved by technology

[0003] At present, the general-purpose solar backsheet generally has a three-layer structure (TPT / TPE). Exposure to outdoor high temperature and high humidity conditions for a long time will often cause bubble delamination due to hydrolysis of the adhesive layer, resulting in loss of protection of the components and a decrease in power generation efficiency and failure.

Method used

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  • Novel solar cell backplate and preparation method thereof

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Embodiment

[0032] Add a certain amount of methyltrihydroxysilane into a reactor, and then add excess ammonia water (1mol / L) drop by drop. After aging for a certain period of time at room temperature, methyltrihydroxysilane undergoes self-condensation to form Si atoms. The methyl group is connected to form a polymeric network system with repeated Si—O—Si as the skeleton, and a sufficient amount of ethanol is added, and the polysiloxane sol is obtained by ultrasonic dispersion for 30 minutes. Use the slit coating method to evenly coat the polysiloxane sol solution on one side of the biaxially oriented polyester film 2, dry it in a 100°C oven, cool and wind it, and then pass the micro gravure on the biaxially oriented polyester film. 2 The other side is evenly coated with polyurethane adhesive, and the polyolefin film is combined by dry lamination method to cool and wind up. The obtained new solar cell backsheet has good hydrolysis resistance and mechanical properties, and no yellowing of do...

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Abstract

The invention relates to the technical field of solar cell backplates, and particularly discloses a new solar cell backplate and a preparation method thereof. The solar cell backplate is prepared from an ultra-drainage polymer layer, a double-way stretching polyester film base material, a bonding agent layer and a polyolefine bonding layer by coating a composite technology. The new solar cell backplate and the preparation method thereof provided by the invention have the advantages that the ultra-drainage polymer layer is adopted, the new solar cell backplate has an ultra-drainage property, water bubbles are avoided adhering on the surface of the backplate, the hydrolysis resistance property of the backplate is improved, and the long term operation of a solar energy assembly is guaranteed effectively.

Description

technical field [0001] The invention relates to the technical field of solar battery backplanes, in particular to a novel structure solar battery backplane and a preparation method thereof. Background technique [0002] Under the background of global climate warming and countries all paying attention to energy saving and emission reduction, solar energy, as an inexhaustible new green and renewable new energy, has attracted more and more attention from all over the world. At present, the application of solar energy is mainly to use solar power generation components to convert solar energy into electrical energy for utilization. Solar power generation components are mainly composed of front plates, packaging materials, crystalline silicon cells, and back plates. The solar backsheet is located on the back of the solar panel and protects and supports the battery. Therefore, it must have reliable electrical insulation, weather resistance, good mechanical properties and water vapo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049H01L31/18
CPCY02E10/50B32B33/00B32B37/12Y02P70/50
Inventor 杜震宇石娜李刚刘波
Owner CHANGZHOU HUITIAN NEW MATERIALS
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