Extra-high-expansion lens for solar power heat-collecting device

Abstract

The invention discloses an extra-high-expansion lens for a solar power heat-collecting device, which comprises a lens body. The upper surface of the lens body is provided with a film layer; the lens body is provided with a supporting structure; and the lower surface of the lens body is provided with a linear micro-groove. The extra-high-expansion lens for the solar power heat-collecting device has the advantages of simple structure, delicate design, light transmittance of over 92 percent, resistance to the high temperature of more than 130 DEG C, yellowing resistance and attenuation-free property; the surface of the lens has a self-cleaning function and is kept away from sundries, such as dust, sand and stone which affect light transmittance; and a well-shaped supporting system with extremely high light transmittance is arranged in the lens, so the lens does not deform in a large area after being used for a long time and the condensing effect is not affected.

Description

technical field [0001] The invention relates to a solar power generation and heat collection device, in particular to an ultra-high power lens of the solar power generation and heat collection device. Background technique [0002] At present, with the increasing shortage of traditional energy and the deterioration of the global environment, countries are paying more and more attention to renewable energy. Among many renewable energy sources, only solar energy is inexhaustible, inexhaustible and non-polluting, which is the renewable energy source with the most development potential. The utilization of solar energy includes photovoltaic, photothermal and so on. [0003] In recent years, with the continuous improvement of conversion efficiency and the decreasing thickness of cells, crystalline silicon solar cells have gradually occupied the mainstream of the market. However, the rapid development of crystalline silicon batteries has led to a serious shortage of silicon raw ma...

AI Technical Summary

Problems solved by technology

[0004] The traditional Fresnel lens is point-focusing. Point-focusing is to gather sunlight on a photovoltaic cell chip, which requires a high-precision sun tracking and tracking transmission device, and the Fresnel lens has a large area, while the photovoltaic cell chip area is relatively large. Small, the overall space utilization rate is insufficient, and there is a high acceptance angle that is difficult to achieve, as well as uneven distribution of light intensity after concentrating, insufficient cooling and heat dissipation make the chip prone to aging and deformation, and efficiency decay

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