Biconical dispersion prism for focus monochromatic solar battery system

A technology of solar cells and beam splitting prisms, applied in prisms, photovoltaic power generation, optics, etc., can solve the problems of high cost and difficult processing of beam splitting prisms, and achieve the effects of saving material costs, convenient and cheap processing, and reducing volume

Inactive Publication Date: 2011-01-12
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0004] The present invention proposes a solution in order to solve the problems of difficult processing and high cost of the above-mentioned dichroic prism applied to the concentrating monochromatic solar cell system

Method used

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  • Biconical dispersion prism for focus monochromatic solar battery system
  • Biconical dispersion prism for focus monochromatic solar battery system
  • Biconical dispersion prism for focus monochromatic solar battery system

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Embodiment approach

[0014] attached figure 1 It is a schematic diagram of the overall structure of the biconical beam-splitting prism of the present invention, which can be said to be an ideal biconical beam-splitting prism. The upper and lower bottom surfaces of this ideal beam-splitting prism are conical, and the processing technology is complicated and expensive. . Accordingly, the present invention utilizes figure 2 After splicing several (6, 8 or 12) triangular prisms as shown, it can be simulated figure 1 The biconical beamsplitter prism is shown. A plurality of triangular prisms are spliced ​​into a regular polyhedron (hexahedron, regular octahedron or regular 12-hedron) with tapered grooves at the upper and lower ends to obtain a biconical dichroic prism used in a concentrating monochromatic photovoltaic cell system.

[0015] The outer surface of a triangular prism consists of two isosceles triangle end faces A, B, two trapezoid side faces C, D and a rectangular bottom face E, composi...

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Abstract

The invention belongs to an optical splitter in the field of solar batteries and relates to a biconical dispersion prism for a focus monochromatic solar battery system. The biconical dispersion prism comprises n identical triangular prisms, wherein the outer surface of each triangular prism consists of a rectangular bottom surface, two isosceles triangle end faces and two trapezoidal side faces, the two triangular end faces are polished surfaces, and an included angle between the two trapezoidal side faces is 1 / n of 360 degrees; the adjacent trapezoidal side faces of the adjacent triangular prisms are spliced together; and one of the two similar conical surfaces formed by splicing the triangular end faces serves as an incidence end face and the other one serves as an exit end face. The biconical dispersion prism of the invention can effectively reduce the volume of the dispersion prism and compress the splitting area, thereby reducing the production cost, improving the efficiency. The biconical dispersion prism is easy to machine and is suitable for large-scale production.

Description

technical field [0001] The invention relates to a light-splitting prism, which is suitable for a light-splitting device of a concentrating monochromatic solar cell system. Background technique [0002] Sunlight in nature is the most environmentally friendly, cleanest and most comfortable natural energy, inexhaustible and inexhaustible. The study found that the use of concentrating technology can greatly reduce the area of ​​solar cells, thereby reducing costs. Due to the broad-spectrum characteristics of sunlight, single-junction solar cells have a high absorption efficiency for specific narrow-band light, which makes the utilization rate of light energy not high enough. Therefore, the multi-junction series solar cell is proposed, and each junction has its own absorption peak corresponding to different wave bands, which can greatly increase the efficiency of photovoltaic cells. However, the process of epitaxially growing a multilayer structure is complicated. [0003] For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/052G02B27/12G02B5/04H02S40/22
CPCY02E10/52Y02E10/50
Inventor 刘文龚贻文王双保聂晶徐智谋
Owner HUAZHONG UNIV OF SCI & TECH
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