Double-curved surface reflecting mirror for light condensation solar module

Abstract

The invention provides a double-curved surface reflecting mirror for a light condensation solar module. The double-curved surface reflecting mirror comprises a double-curved surface substrate and a reflecting layer, wherein the reflecting layer is arranged on the concave surface of the double-curved surface substrate. The double-curved surface reflecting mirror for the light condensation solar module is a light condensation device; the reflecting layer is arranged on the concave surface, so that the secondary light loss caused by coating a film on the convex surface of the traditional glass reflecting mirror can be reduced, and the light effect utilization rate is high; the focal length of the double-curved surface reflecting mirror is small, and is nearly 1 / 2 of that of a Fresnel light condensation mirror with the same or similar size, and the focal length of light spots is small, so that the solar module using the double-curved surface reflecting mirror as a light condenser has small occupied space, little material application and light system weight; the double-curved surface substrate can adopt materials such as glass with good weather resistance and difficulty in deformation, so that the service life of the double-curved surface reflecting mirror is prolonged.

Description

technical field [0001] The invention relates to the technical field of concentrating solar energy, in particular to a hyperboloid reflector for a concentrating solar module. Background technique [0002] At present, the concentrators used in high-power concentrating solar energy on the market are: Fresnel mirrors. Due to the specific optical path requirements of the Fresnel condensers, the height of the corresponding spot focal length is equal to or greater than that of the Fresnel condensers, for example: 400× The focal length of the spot corresponding to the 400mm Fresnel condenser is within 400mm or 430mm. Due to the optical path principle of the Fresnel condenser, the focal length is too high, which increases the material consumption of the power generation module and the module is too heavy. At the same time, due to the Fresnel condenser The material of the condenser is made of acrylic (PMMA), which has low light transmittance, poor weather resistance, and is easily def...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned defects and problems of the existing high-magnification concentrating solar concentrating mirror technology, the purpose of the present invention is to provide a hyperboloid reflector with short spot focal length, high light efficiency utilization rate, good weather resistance, and not easily deformed. The device is used in concentrating solar modules, which can solve the problems of high spot focal length, low light efficiency utilization, poor weather resistance and easy deformation of existing high-power concentrating solar concentrating mirrors.

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