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Solar band division photovoltaic power generation device

A photovoltaic power generation and sub-band technology, applied in photovoltaic power generation, photovoltaic modules, circuits, etc., can solve problems such as low conversion efficiency

Inactive Publication Date: 2016-05-11
SHANXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem of low conversion efficiency in existing solar photovoltaic power generation devices, and to provide a solar sub-band photovoltaic power generation device

Method used

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  • Solar band division photovoltaic power generation device

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Embodiment Construction

[0010] As shown in the drawings, a solar sub-band photovoltaic power generation device in this embodiment includes a parabolic reflector 1, a strip linear Fresnel lens 2, a bracket 3, a triangular prism 4 and a multi-band photovoltaic cell group 5. The parabolic reflector 1, the strip linear Fresnel lens 2, the triangular prism 4 and the multi-band photocell group 5 are successively arranged on the support 3 from left to right, and the focal line of the parabolic reflector 1 is aligned with the strip shape The focal lines of the linear Fresnel lens 2 overlap, and the strip-shaped high-energy-density parallel light output by the strip-shaped linear Fresnel lens 2 hits the prism 4, and makes the colored light of each band decomposed by the prism 4 cover the multi-band photocell group 5 above; the multi-band photovoltaic cell group 5 is composed of solar cells of multiple bands, and the bands cover the main spectrum range of solar radiation. The positions of different band solar c...

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Abstract

The invention belongs to the technical field of solar photovoltaic power generation devices, particularly relates to a solar band division photovoltaic power generation device, and mainly solves the technical problems of low conversion efficiency of the existing solar photovoltaic power generation devices. The solar band division photovoltaic power generation device comprises a parabolic cylinder reflecting mirror, a bar-shaped linear Fresnel lens, a bracket, a triangular prism and multiband photovoltaic cell packs. Low-energy-density solar radiation is converged into bar-shaped high-energy-density parallel light of which energy density is expanded for dozens or hundreds of times through the parabolic cylinder reflecting mirror and the bar-shaped linear Fresnel lens. Bar-shaped high-energy-density parallel light is decomposed into all band colors of light through the triangular prism. Solar cells formed by band gap material having the best matching degree with the wavelength of different band colors of light are arranged at the irradiation positions of different band colors of light. Sunlight of all bands can be efficiently converted into electric energy so that the technical problems of low conversion efficiency of the existing solar photovoltaic power generation devices can be solved.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation devices, and in particular relates to a solar sub-band photovoltaic power generation device. Background technique [0002] Facing the grim reality of the depletion of fossil energy and the increasing environmental pollution, the efficient use of solar energy has attracted attention. Most of the raw materials for solar cells currently on the market are polycrystalline silicon and monocrystalline silicon. The conversion efficiency of polycrystalline silicon solar cells is about 15%, that of monocrystalline silicon products is about 20%, and that of monocrystalline silicon solar cells produced on a large scale in factories is only 12%. The low conversion efficiency of solar cells and the low energy density of solar energy limit the large-scale commercial application of solar photovoltaic power generation. [0003] The reason for the low conversion of solar energy to elec...

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Application Information

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IPC IPC(8): H02S40/20H02S40/22
CPCY02E10/52H01L31/0547H02S40/00
Inventor 樊民革王欣峰
Owner SHANXI UNIV