Lightweight backsheet for photovoltaic module, and photovoltaic module therefor and preparation method thereof

Abstract

The invention discloses a lightweight backsheet for a photovoltaic module, and a photovoltaic module therefor and a preparation method thereof. The lightweight backsheet at least comprises a thermoplastic core layer and a first thermoplastic substrate layer which are integrated by hot melt pressing, wherein the base material of the thermoplastic core layer is a core layer thermoplastic polymer, the base material of the first thermoplastic substrate layer is a substrate layer thermoplastic polymer, and the core layer thermoplastic polymer is the same as the material of the substrate layer thermoplastic polymer; the thermoplastic core layer has a honeycomb shape or a porous foam shape; the lightweight backsheet can simultaneously replace a metal frame as the lining structure of the photovoltaic module; the lightweight backsheet for the photovoltaic module, and the photovoltaic module therefor and the preparation method thereof have the advantages of the light weight, safety and reliability, no border design, no easy accumulation of dust and no grounding, The version can be flexible and changeable, avoiding the high bursting problem of the traditional double glass component, and the lightweight backsheet for the photovoltaic module, and the photovoltaic module therefor and the preparation method thereof fully meet the requirements of the photovoltaic standard, and can achieve thereal scale promotion application.

Description

technical field [0001] The invention belongs to the photovoltaic encapsulation technology, and in particular relates to a lightweight backboard for a photovoltaic module. The invention also relates to a photovoltaic module used in the light backboard and a preparation method of the photovoltaic module. Background technique [0002] Reliability, safety and low cost are requirements that any energy product must meet at the same time. In the past few decades, the photovoltaic industry has reduced the cost of photovoltaic products by as much as 300 times in the past 40 years through continuous and high-quality research and development to improve photoelectric conversion efficiency, supply chain and localization and automation of production equipment. Of course, over the past few decades, the cost of photovoltaic cells has been significantly and effectively reduced to the extreme. Both the limit of conversion efficiency and the scale effect of production are about to encounter bo...

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Problems solved by technology

[0013] Before explaining the technical solution of the present invention, the applicant further explained the origin of the development of the technical solution: First, the applicant believes that the material functional layer in the photovoltaic packaging solution must be laminated through the adhesive film layer, which is a technical prejudice, and the application People found that this can be solved by targeted screening of material layers and application of new technology, and then problems such as bubbling, degumming and deformation creep can be solved

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