Test method and device for high-light intensity and large-scale solar cell illumination linearity

A solar cell and testing device technology, which is applied in the field of solar cells, can solve the problems that the range of light irradiance variation is difficult to reach more than 3 orders of magnitude, and the test value of light linearity cannot be obtained.

Active Publication Date: 2012-03-21
BEIJING DONGFANG MEASUREMENT & TEST INST
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light irradiance variation range of all the above-mentioned methods and systems is difficult to reach more than 3 orders of magnitude

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test method and device for high-light intensity and large-scale solar cell illumination linearity
  • Test method and device for high-light intensity and large-scale solar cell illumination linearity
  • Test method and device for high-light intensity and large-scale solar cell illumination linearity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0050] Such as figure 1 Shown: a test device for the linearity of solar cells with high light and strong range of light, including a test light source capable of generating light pulses and a test darkroom. The device uses a pulse xenon lamp 1 to generate millisecond-level high-energy light pulses as a test light source. The xenon lamp has an elliptical concave reflector 2 that focuses the light beam. When a pulsed xenon lamp cannot meet the high light intensity required, multiple pulsed xenon lamps can be triggered simultaneously through a synchronous trigger circuit, using a tapered light tube 3 or a cone-shaped fiber bundle or other optical paths. The system combines the light radiation of multiple pulsed xenon lamps to achieve higher light intensities. The test darkroom 14 has a small hole window 4 in the light axis direction of the light source, and the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a test method and a test device for high-light intensity and large-scale solar cell illumination linearity, which can accurately test short-circuit current or open circuit voltage illumination linearity when the light intensity variation scale is more than three orders of magnitude and especially under the high light intensity of thousands of solar constants, measurement can be continuously carried out, and light intensity intervals can be freely set. The test device comprises a test light source and a test darkroom, wherein the test light source can generate light pulse; the test darkroom is provided with an orifice window; a light spectrum regulation light filter is arranged behind the orifice window; a beam splitter is aslant arranged; a tested solar cell and a standard solar cell are arranged on the light path of the transmission light of the beam splitter by one group of vertically-arranged neutral attenuation light filters which can be independently movedin or out of the light path; the light path of the reflected light of the beam splitter is provided with a monitoring solar cell through the attenuation light filters; the tested solar cell and the standard solar cell are both fixed on a temperature-control test bench; and the temperature-control test bench is arranged on a guide rail which can cause the temperature-control test bench to move from back and front along the light axis of the light source.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method and a device for testing the linearity of illumination of solar cells in a high light intensity range. The high light intensity refers to the light intensity at 1 solar constant (1367W / m 2 ) above the light intensity, the large range refers to the light irradiance change range or the light intensity change range is more than 3 orders of magnitude. Background technique [0002] The change of the slope of the short-circuit current (or open-circuit voltage) of the solar cell with the light intensity variation curve is called the light linearity of the short-circuit current (or open-circuit voltage) of the solar cell. Solar cell light linearity is an important parameter to evaluate the performance of solar cells. For example, the international standard ISO-15387 stipulates that the linearity of the short-circuit current of a standard solar cell within the r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01R31/36
Inventor 杨亦强
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap