A test system and test method for high-power concentrating photovoltaic cells

Abstract

The invention discloses a system for testing high-ratio concentrator photovoltaic cells. The system comprises a light source, a concentrator system and a secondary brightness balance system. The light source is a solar simulation light source; the concentrator system can receive simulated sunlight emitted by the light source, can output convergent beams with a certain energy concentration ratio and comprises a convergent lens and a diaphragm with an adjustable aperture, and the diaphragm is positioned between the light source and the convergent lens; the convergent beams can uniformly irradiate on the tested cells by the aid of the secondary brightness balance system. The invention further discloses a method for testing the high-ratio concentrator photovoltaic cells. The system and the method for testing the high-ratio concentrator photovoltaic cells have the advantages that the diaphragm is arranged between the light source and the convergent lens, so that large-area uniform parallel light can be outputted; the area of the aperture of the diaphragm can be continuously adjusted, so that total light energy received by the tested cells can be continuously adjusted; the brightness balance system can be a light funnel or trapezoid prism, the convergent beams can be repeatedly totally reflected in the light funnel or trapezoid prism, and accordingly brightness balance effects can be realized.

Description

technical field [0001] The application belongs to the field of photovoltaics, and in particular relates to a testing system and testing method for high-power concentrating photovoltaic cells. Background technique [0002] In recent years, as a new type of renewable energy, solar cells have attracted more and more attention, and their status in the energy industry has become more and more important. With the continuous development of solar technology and people's continuous in-depth exploration of high-efficiency solar cells, the concentrating solar cell system composed of multiple PN-structured high-efficiency solar cells and concentrating components is bound to become the mainstream of solar cell applications. . [0003] For solar cells with multiple PN junctions, in the actual application process, they often do not work directly under the outdoor sunlight, but gather a large area of ​​sunlight to a small cell surface through a condenser lens, so that The surface unit are...

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