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A device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells

A light-induced attenuation and photovoltaic cell technology, which is applied in photovoltaic power generation, photovoltaic modules, photovoltaic system monitoring, etc., can solve the problems of inability to effectively guarantee the accuracy of battery efficiency testing, long light-induced attenuation time of solar cells, and low matching degree. problem, to achieve reliable guarantee, guarantee stability, and good matching effect

Active Publication Date: 2018-09-11
TRINA SOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simulated light sources of the existing solar cell light-induced attenuation devices all use a single light source such as energy-saving lamps, incandescent lamps, halogen lamps or xenon lamps. Low, resulting in long light-induced attenuation time of solar cells, poor stability, and cannot effectively guarantee the accuracy of cell efficiency testing

Method used

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  • A device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells
  • A device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells
  • A device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like Figure 1-5 As shown, the simulated light-induced attenuation device of solar crystalline silicon photovoltaic cells of the present invention includes a sealed box 1; a fan 2 is provided on the top of the box 1, and a temperature and light controller 3 is provided on the outer surface of the box 1. The inside of the body 1 is provided with a simulated light source 4 and a sample measuring platform 5 sequentially from top to bottom; the simulated light source 4 includes a xenon lamp 6, a filter 7 arranged directly under the xenon lamp 6, and a metal halide lamp 8 arranged staggered from the xenon lamp 6; the sample Measuring platform 5 comprises sliding support 9, sample temperature detector 10 and the pyranometer 11 that is positioned on sliding support 9; The pyranometer 11 is provided with by common thickened glass layer 12, solar crystalline silicon photovoltaic cells sample layer 13 and The sample radiator 15 composed of the photovoltaic high-transparency glass...

Embodiment 2

[0053] When simulating the light-induced attenuation of natural light, the battery sheet should be ≥ 2.5 days, and the total requirement is at least 60kWh of cumulative radiation. The irradiance and temperature data are passed through the pyranometer 11 and Pt100 sample temperature detector of the device in Example 1. A temperature probe is provided to ensure that the conditions for simulating the light-induced attenuation of natural light meet the requirements. That is: sample temperature (50±10)℃, light intensity (1000±50)W / m 2 . Before and after simulating the light-induced attenuation of natural light, solar simulators should be used to test the electrical properties of the cells. Crystalline should be less than 2%, and the appearance of the cell should be free from oxidation, missing corners, pollution and internal cracks.

[0054] Adopt the simulation light-induced attenuation device in embodiment 1 to carry out the light-induced attenuation of solar crystalline silico...

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Abstract

The invention discloses a device and a method for simulating light degradation of a solar crystal silicon photovoltaic cell piece. The device comprises a sealing box body, wherein a fan is arranged on the top of the box body, a temperature illumination controller is arranged on the outer surface of the box body, and the interior of the box body is provided with a simulative light source and a sample measuring table from top to bottom in sequence; the simulative light source comprises a xenon lamp, a light filter arranged under the xenon lamp and a metal halid lamp staggered to the xenon lamp; the sample measuring table comprises a sliding support, a sample temperature detector and a total radiation meter positioned on the sliding support; a sample radiating body consisting of an ordinary thickened glass layer, a solar crystal silicon photovoltaic cell piece sample layer and a photovoltaic high-transparent glass layer is arranged on the total radiation meter, and the photovoltaic high-transparent glass layer directly faces the simulative light source; and the sliding support is in sliding fit with fixed sliding rails arranged on the inner wall of the lower part of the box body. The device and the method can provide a stable environment as well as stable illumination, temperature and humidity, and an accurate and ideal test result is achieved.

Description

technical field [0001] The invention relates to the technical field of light-induced attenuation of cells, in particular to a device and method for simulating light-induced attenuation of solar crystalline silicon photovoltaic cells. Background technique [0002] More than 30 years ago, H.Fischer and W.Pschunder et al. first observed the initial light-induced attenuation phenomenon of P-type (boron-doped) crystalline silicon solar cells. The initial light-induced attenuation mechanism is as follows figure 1 shown. Then people conducted a lot of scientific experiments on this. In recent years, scientific research has found that the phenomenon of light-induced attenuation is related to the concentration of boron and oxygen in silicon wafers. The boron-oxygen complex is formed, thereby reducing the minority carrier lifetime, but after annealing treatment, the minority carrier lifetime can be restored, and the recognized possible reaction is: [0003] [0004] Solar crystal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S50/15
CPCH02S50/15Y02E10/50
Inventor 闫萍周学峰
Owner TRINA SOLAR CO LTD
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