Solar module rear side encapsulation element and solar module

Abstract

A solar module rear side encapsulation element having a laminate-type layer construction having at least one polymer plate or polymer foil (2,3,4,5a,5b,8) having a laminate surface is provided. The laminate-type layer construction has at least one protective layer having layer openings (6). The protective layer (1a, 1b) covers at least 70% of the laminate surface by a covering area, and due to the layer openings (6) at least 15% and maximum 99.9% of the regions of the solar module rear side encapsulation element lying under the protective layer (1a,1b) are covered in the covering area, and the protective layer is formed as a structure made of threads, thus being open to diffusion.

Description

technical field [0001] The invention relates to a back packaging component of a solar module and a solar module comprising the back packaging component of a solar module. Background technique [0002] The solar module backside encapsulation member should be weather-resistant enough to sufficiently insulate the solar cells of the solar module from the weather even after decades of outdoor use. Generally, this is ensured by multilayer laminates made of polyvinyl fluoride (PVF) (eg DuPont, the United States, Wilmington) and polyethylene terephthalate (PET), polyethylene terephthalate is generally used as a central isolation film set in two layers Between the films and optionally between additional adhesive layers. Also, various layers made of polyolefins, polyamides or other polymers can be used. For example, in EP2482338A2 there is described such a laminated structure of the solar module backside encapsulation member. Such laminated layer structures have at least one pol...

AI Technical Summary

Problems solved by technology

Although it has improved hydrolysis resistance and good electrical insulation properties, it does not weatherproof long enough to protect solar modules in areas with many dust storms, sand storms and enhanced UV exposure

Therefore, this solar module has limited applicability for use in desert areas

[0005] Especially in desert areas, where solar modules are exposed to increased mechanical stress and enhanced UV exposure caused by sandstorms, the wear and tear of existing solar modules is higher

This is due to the fact that the polymer foils used have limited resistance to UV radiation and their mechanical stability against abrasion is too low in view of the required service life of up to twenty years

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