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Solar multilayer composite photovoltaic backboard

A multi-layer composite and photovoltaic backplane technology, which is applied in the direction of photovoltaic power generation, layered products, and synthetic resin layered products, can solve the problems of reduced effective output power of batteries, fires caused by component combustion, and battery module shedding, etc., to achieve Promotes crystal growth efficiency, enhances strength against mechanical damage, and enhances waterproof performance

Active Publication Date: 2022-06-17
江苏大明光福电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, if the backplane has delamination, cracking, blistering, yellowing and other adverse phenomena, it will cause the battery module to fall off, the battery sheet to slip, the effective output power of the battery to decrease, etc., and even cause the components to burn and trigger a fire.

Method used

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  • Solar multilayer composite photovoltaic backboard
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  • Solar multilayer composite photovoltaic backboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A solar multi-layer composite photovoltaic back sheet, comprising: a polyvinyl fluoride protective layer with a thickness of 10 μm and a polyethylene terephthalate intermediate layer with a thickness of 0.2 mm; a polyethylene terephthalate intermediate layer A polyvinyl fluoride protective layer is applied on both sides respectively, and the polyvinyl fluoride protective layer and the polyethylene terephthalate intermediate layer are adhered by a polyurethane adhesive.

[0028] Above-mentioned polyethylene terephthalate intermediate layer adopts following concrete steps to make: 50kg polyethylene terephthalate is placed in 70 ℃ of drying ovens to dry and remove moisture, and 1kg hyperbranched pentaerythritol composite polycondensate is added. Melt and blend in a torque rheometer preheated to 120° C., the rotor speed is 60 r / min, extrude, dry, and injection-mold to obtain a polyethylene terephthalate intermediate layer.

[0029] The above-mentioned hyperbranched pentaery...

Embodiment 2

[0031] A solar multi-layer composite photovoltaic back sheet, comprising: a polyvinyl fluoride protective layer with a thickness of 100 μm and a polyethylene terephthalate intermediate layer with a thickness of 0.5 mm; a polyethylene terephthalate intermediate layer A polyvinyl fluoride protective layer is applied on both sides respectively, and the polyvinyl fluoride protective layer and the polyethylene terephthalate intermediate layer are adhered by a polyurethane adhesive.

[0032] Above-mentioned polyethylene terephthalate intermediate layer adopts following concrete steps to make: 100kg polyethylene terephthalate is placed in 80 ℃ of drying ovens to dry and remove moisture, and 5kg hyperbranched pentaerythritol composite polycondensate is added. Melt and blend in a torque rheometer preheated to 140° C., the rotor speed is 100 r / min, extrude, dry, and injection-mold to obtain a polyethylene terephthalate intermediate layer.

[0033] The above-mentioned hyperbranched penta...

Embodiment 3

[0035] A solar multi-layer composite photovoltaic back sheet, comprising: a polyvinyl fluoride protective layer with a thickness of 30 μm and a polyethylene terephthalate intermediate layer with a thickness of 0.4 mm; a polyethylene terephthalate intermediate layer Polyvinyl fluoride protective layers are respectively applied on both sides, and the polyvinyl fluoride protective layer and the polyethylene terephthalate intermediate layer are adhered by epoxy resin adhesive.

[0036] Above-mentioned polyethylene terephthalate intermediate layer adopts following concrete steps to make: 60kg polyethylene terephthalate is placed in 77 ℃ of drying ovens to dry and remove moisture, and 2kg hyperbranched pentaerythritol composite polycondensate is added. Melt and blend in a torque rheometer preheated to 135° C., the rotor speed is 70 r / min, extrude, dry, and injection-mold to obtain a polyethylene terephthalate intermediate layer.

[0037]The above-mentioned hyperbranched pentaerythri...

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Abstract

The invention discloses a solar multilayer composite photovoltaic backboard which comprises polyvinyl fluoride protection layers and a polyethylene glycol terephthalate middle layer, the polyvinyl fluoride protection layers are attached to the two sides of the polyethylene glycol terephthalate middle layer respectively, and the polyvinyl fluoride protection layers and the polyethylene glycol terephthalate middle layer are bonded through an adhesive. The adhesive is a polyurethane adhesive or an epoxy resin adhesive, and the polyethylene glycol terephthalate intermediate layer is obtained by blending a hyperbranched pentaerythritol composite polycondensate and polyethylene glycol terephthalate. The hyperbranched pentaerythritol composite polycondensate is obtained by adopting bis (hydroxymethyl) propionic acid as a branched monomer, carrying out condensation on bis (hydroxymethyl) propionic acid and pentaerythritol, and reacting end hydroxyl of the branched polycondensate with palmitic acid and nano silicon dioxide.

Description

technical field [0001] The present application relates to the technical field of photovoltaic backsheets, and in particular, to a solar multi-layer composite photovoltaic backsheet. Background technique [0002] Due to the aggravation of environmental pollution and the gradual reduction of fossil energy such as coal, oil and natural gas, various countries have vigorously developed various new energy technologies such as nuclear energy, wind energy, combustible ice, and hydrogen energy. Among the above energy sources, solar energy is highly sought after due to its clean, inexhaustible, inexhaustible, and convenient development and utilization advantages. [0003] As the world's largest producer of solar cell modules, China has formed various solar energy industry clusters in various regions of China. Since the photovoltaic modules themselves constitute the structural part of the building, this requires the use of high-strength photovoltaic modules. The installed capacity of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/30B32B27/08B32B27/18B32B7/12H01L31/048H01L31/049
CPCB32B27/36B32B27/304B32B27/08B32B27/18B32B7/12H01L31/0481H01L31/049B32B2307/306B32B2307/558B32B2307/7265B32B2457/12Y02E10/50
Inventor 何梦龙李学忠胡世杰
Owner 江苏大明光福电力科技有限公司
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