Compound-eye-based compact double-reflective photovoltaic concentrator

Abstract

The invention relates to the photovoltaic power generation technology, and aims at providing a compact double reflection-type photovoltaic condenser based on compound eyes. The compact double reflection-type photovoltaic condenser based on the compound eyes comprises a photovoltaic cell and an optical collector, wherein the upper surface of the optical collector comprises a free curved surface and a refraction curved surface, the lower surface of the optical collector comprises a transmission plane and a reflection plane, the center of the refraction curved surface and the center of the reflection plane are positioned at the same vertical position, the center of the free curved surface and the center of the transmission plane are positioned at the same vertical position, and the free curved surface is arranged at a focal position of the refraction curved surface; and the photovoltaic cell is arranged outside the optical collector and adjoins to the transmission plane, the photovoltaic cell is positioned at a focal position of the free curved surface, and the aperture of the transmission plane is larger than that of the photovoltaic cell. The compact double reflection-type photovoltaic condenser has the advantages that the photovoltaic conversion efficiency of the photovoltaic cell is improved, the service life of the photovoltaic cell is prolonged, an optical plastic PMMA (polymethyl methacrylate) is adopted and is prone to injection molding and processing, light in weight and applicable to large-scale processing, and the processing cost is reduced.

Description

technical field [0001] The invention relates to photovoltaic power generation technology, in particular to a compact double-reflection photovoltaic concentrator based on compound eyes. Background technique [0002] With the rapid development of the global economy and human society, mineral energy such as oil and coal has been consumed by humans in large quantities. Human beings are actively developing renewable energy technologies in pursuit of sustainable development. In the field of developing renewable new energy, the sun, as one of the renewable energy sources, has the most abundant resource reserves, which has attracted increasing attention from governments and energy experts around the world in recent years. [0003] The traditional photovoltaic concentrating system usually adopts the point focusing method, but the point focusing method will affect the service life of the photovoltaic cell and reduce its conversion efficiency. In order to make the illumination spot on...

AI Technical Summary

Problems solved by technology

First of all, because the light needs to be reflected many times in the homogenizing prism before it is irradiated on the photovoltaic cell, resulting in a large loss of light energy. Secondly, the optical concentrator and the homogenizing prism are double separated devices, which will cause error, in addition, adding dodging prisms is bound to increase the cost of the entire system

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