Rear panel composite film for solar photovoltaic cell assembly, and preparation method for rear panel composite film

A technology of photovoltaic cells and solar energy, applied in photovoltaic power generation, electrical components, integration of renewable energy, etc., can solve the problems of dependence on imports, restrictions on the development of solar photovoltaic cells, high prices of polyvinyl fluoride and polyvinylidene fluoride, and achieve excellence Anti-aging, long-term effective protection, and the effect of improving stability

Inactive Publication Date: 2012-05-23
天津市天塑科技集团有限公司技术中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the most widely used type of solar photovoltaic cell module backsheet composite film in my country is the TPT backsheet film, which is composed of upper and lower layers of polyvinyl fluoride (PVF) or polyvinylidene fluoride (PVDF) and a middle la

Method used

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  • Rear panel composite film for solar photovoltaic cell assembly, and preparation method for rear panel composite film
  • Rear panel composite film for solar photovoltaic cell assembly, and preparation method for rear panel composite film

Examples

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Embodiment

[0037] Example Preparation of solar photovoltaic cell module backplane composite film

[0038] 1. The polytetrafluoroethylene resin is sequentially dried, billet-made, sintered, turned, and low-temperature plasma surface treatment to obtain a polytetrafluoroethylene film and a hydrophilic film.

[0039] 2. Polyethylene terephthalate film was prepared by casting method.

[0040] 3. Coat the upper and lower surfaces of the polyethylene terephthalate film with adhesives, place the polyethylene terephthalate film between the upper and lower polytetrafluoroethylene films and the hydrophilic film, place The composite film of the back plate of the solar photovoltaic cell module is prepared by thermocompression bonding and curing of seven layers of films.

[0041] The obtained solar photovoltaic cell module backsheet composite film is composed of the following seven layers of materials:

[0042] 0.035mm thick polytetrafluoroethylene film (a layer of hydrophilic film is attached to t...

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Abstract

The invention relates to a rear panel composite film for a solar photovoltaic cell assembly, and a preparation method for the rear panel composite film. The rear panel composite film for the solar photovoltaic cell assembly is formed by compounding a polytetrafluoroethylene (PTFE) rotary cut film (1) with thickness of 0.028 to 0.040mm, a polyethylene terephthalate (PET) film (2) with the thickness of 0.17 to 0.35mm, a PTFE rotary cut film (3) with the thickness of 0.028 to 0.040mm, and hydrophilic films a, b, c, and d, wherein the hydrophilic films a, b, c, and d are arranged on upper and lower surfaces of the PTFE rotary cut film (1) and the PTFE rotary cut film (3). The preparation method comprises the following steps of: coating adhesives on the upper and lower surfaces of the PET film respectively, arranging the PET film between the PTFE films and the hydrophilic films, hot-pressing, and bonding and curing to obtain the rear panel composite film. Import raw materials are not used in the rear panel composite film, so cost is greatly reduced, and domestication degree is improved. Moreover, the rear panel composite film can be adhered to a glue film of a solar photovoltaic cell well.

Description

(1) Technical field [0001] The invention relates to a component used in a solar photovoltaic cell and a preparation method thereof, in particular to a solar photovoltaic cell component backplane composite film and a preparation method thereof. (2) Background technology [0002] Solar energy is a clean, safe and inexhaustible renewable energy. With the aggravation of the energy crisis and the need for environmental protection, the development and utilization of solar energy has received more and more attention. In this On the one hand, the photovoltaic conversion of solar energy is the fastest growing research field in recent years. [0003] Solar photovoltaic cell module back sheet composite film is an important component of solar cells, it is used to protect solar panels and related components from the influence of outdoor environment. The backsheet composite film of solar photovoltaic cell modules has the characteristics of aging resistance, high and low temperature resis...

Claims

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Application Information

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IPC IPC(8): H01L31/048B32B27/06B32B27/30B32B27/36H01L31/18H01L31/049
CPCY02B10/10Y02E10/50
Inventor 谢学民尹陆生赵咏梅李栋段连群黄晓辉吴震董红霞陈思伦吴建华
Owner 天津市天塑科技集团有限公司技术中心
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