Preparation method of novel colored BIPV (building integrated photovoltaics)

Abstract

The invention relates to the field of photovoltaic modules, in particular to a preparation method of a novel colored BIPV (building integrated photovoltaics), which comprises the following steps: S1, plating a plurality of layers of optical films on the surface of a glass substrate, and controlling the visible light transmittance to be 30-90%, the reflectivity to be 70-10% and the absorptivity to be less than 0.5%; s2, separating the plated optical film from the glass substrate, and taking out the thin film layer; s3, grinding the thin film layer until the powder granularity reaches 10-60 microns to prepare the semitransparent color pigment; s4, uniformly mixing and stirring the pigment and the transparent glaze, and selecting different mixing proportions of the pigment and the transparent glaze according to the requirements of appearance and transmittance; s5, coating front plate glass of the BIPV with the prepared pigment through a silk-screen printing process; and S6, carrying out high-temperature sintering on the front plate glass coated with the pigment to obtain the colored glass front sheet. The color is rich in variety, is coordinated with the color of the building appearance, and greatly reduces the loss of the photoelectric conversion efficiency of the photovoltaic module.

Description

technical field [0001] The invention relates to the field of photovoltaic modules, in particular to a preparation method of a novel color BIPV. Background technique [0002] BIPV is the combination of building materials and photovoltaic devices, directly as part of the external structure of the building, so that it has both power generation function and building material function. It can not only be used in building roofs, but also as photovoltaic curtain walls, photovoltaic sunshades, photovoltaic fences, etc., greatly improving the photovoltaic power generation capacity of buildings. [0003] Regardless of crystalline silicon cells or thin film cells, the appearance color is dark blue or blue-black, which is determined by the material properties of the solar cell itself, and the color is too dull and monotonous. But in the architectural design, light and color are a whole and play an important role. Color can be used as an element alone, or combined with materials as a w...

AI Technical Summary

Problems solved by technology

[0005] Processing color BIPV mainly includes vacuum coating process, high temperature glaze process, digital printing process, but there are certain defects. Controlled sputtering production line completes the deposition of multi-layer materials; the process of thin-film spectroscopic film is complicated, and the spectrum shifts after lamination, which makes the reflection of the film change greatly. In actual use, it is easy to cause color difference of the finished product, and the manufacturing cost is high.

High-temperature colored glaze is to print inorganic glaze on the glass surface, and then dry, temper or thermally process the glaze to permanently sinter the glaze on the glass surface; the existing colored glaze has a large problem of light absorption of the pigment, which leads to the failure of the finished product Photovoltaic module power loss is too large

Digital printing is to print organic low-temperature or high-temperature ink on the glass surface through printing equipment, and then dry and thermalize the coating to cure the coating on the glass surface. Large damage