Coating method of curved mirror for concentrated solar module

Abstract

The invention discloses a coating method of a curved mirror for a concentrating solar power module. The coating method includes: step 1, pretreating a film without a reflecting layer; step 2, coatingan adhesive applying face of the film with an adhesive, and then drying and curing the adhesive on the film surface; step 3, coating the adhesive applying face of the film with a reflective layer to obtain a film sheet; step 4, laminating a protective film on the reflective layer of the film sheet; step 5, arranging a curved base plate on the surface, without the protective film, of the film sheetto form the curved mirror. By adoption of a vacuum coating process on a planar production line, the film is coated with the reflective layer in advance, then an in-module injection molding process isadopted for forming the curved base plate, direct coating of a curved surface is avoided, and accordingly coating difficulty is lowered, stability in coating is achieved, easiness in mass productionis realized, and equipment cost is sharply reduced.

Description

technical field [0001] The invention relates to the technical field of concentrating solar energy, in particular to a method for coating a curved mirror used in a concentrating solar module. Background technique [0002] At present, most of the concentrating mirrors used in high-power concentrating solar energy on the market are Fresnel mirrors, which use curved or hyperboloid mirrors as the shape of the substrate, and the substrate materials are mostly glass, aluminum, PMMA (acrylic) or SOG (silicon-glass bonding) Structural materials), the above materials are used for concentrating light after surface treatment and other processes. The Fresnel lens is too much affected by temperature, the focus is uncertain, and it is easy to cause excessive loss of secondary light and energy. The requirements for materials are also too high, so the defect rate during production is high, the cost is too high, and mass production is difficult. Coating on curved surfaces is difficult, whic...

AI Technical Summary

Problems solved by technology

The Fresnel lens is too much affected by temperature, the focus is uncertain, and it is easy to cause excessive loss of secondary light and energy. The material requirements are also too high, so the defect rate is high during production, the cost is too high, and mass production is difficult

Coating on curved surfaces is difficult, which increases the cost of coating equipment and makes mass production difficult

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