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Calibration Specification for Electroluminescence Defect Detection Instruments of Photovoltaic Cells and Modules
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JJF 2063-2023
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Standard similar to JJF 2063-2023 JJF 2054 JJF 2055 JJF 2053
Basic data Standard ID | JJF 2063-2023 (JJF2063-2023) | Description (Translated English) | Calibration Specification for Electroluminescence Defect Detection Instruments of Photovoltaic Cells and Modules | Sector / Industry | Metrology & Measurement Industry Standard | Word Count Estimation | 26,249 | Date of Issue | 2023-06-30 | Date of Implementation | 2023-12-30 | Issuing agency(ies) | State Administration for Market Regulation |
JJF 2063-2023: Calibration Specification for Electroluminescence Defect Detection Instruments of Photovoltaic Cells and Modules ---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
National Metrology Technical Specifications of the People's Republic of China
Photovoltaic module electroluminescence defects
Detector calibration specifications
Published on 2023-06-30
Implemented on 2023-12-30
Released by the State Administration for Market Regulation
Photovoltaic module electroluminescence defects
Detector calibration specifications
Responsible unit. National Photovoltaic Special Measuring Instruments Measurement Technical Committee
Main drafting unit. Fujian Institute of Metrology
Trina Solar Co., Ltd.
Unit participating in the drafting. Haining Chint New Energy Technology Co., Ltd.
Xiamen University of Technology
Taizhou Metrology Technology Research Institute
This specification is entrusted to the National Photovoltaic Special Measuring Instruments Measurement Technical Committee to be responsible for the interpretation
The main drafters of this specification.
Yang Aijun (Fujian Institute of Metrology)
Yan Ping (Trina Solar Co., Ltd.)
Luo Haiyan (Fujian Institute of Metrology)
Participating drafters.
Tong Yunfei (Haining Chint New Energy Technology Co., Ltd.)
Lin Jianchun (Xiamen University of Technology)
Xu Xin (Taizhou Institute of Metrology)
He Xiang (Fujian Institute of Metrology)
Table of contents
Introduction(Ⅱ)
1 Scope(1)
2 Cited documents(1)
3 Terms and Definitions(1)
4 Overview(2)
5 Measuring characteristics(2)
6 Calibration conditions(2)
7 Calibration items and calibration methods (3)
8 Calibration result expression(6)
9 Recalibration time interval(7)
Appendix A Example of uncertainty assessment of EL spatial resolution calibration results (8)
Appendix B Uncertainty Evaluation Example of Forward Current Calibration Results (11)
Appendix C EL spatial resolution test board reference standard style (15)
Appendix D Recommended format for original calibration records (16)
Appendix E Recommended format for inner pages of calibration certificate (20)
Introduction
JJF 1071 "Rules for Writing National Measurement Calibration Specifications", JJF 1001 "General Measurement Terms and Definitions" and
JJF 1059.1 "Evaluation and Expression of Measurement Uncertainty" together constitute the basic series supporting the formulation of this specification.
specification.
This specification is released for the first time.
Photovoltaic module electroluminescence defects
Detector calibration specifications
1 Scope
This specification applies to the calibration of electroluminescent defect detectors for photovoltaic cells and photovoltaic modules.
2 cited documents
This specification references the following documents.
GB/T.19953-2005 Measurement of resolution of digital cameras
GB/T 20733 Digital camera terminology
For dated references, only the dated version applies to this specification; for undated references, only the dated edition applies.
The latest version (including all modification orders) shall apply to this specification.
3 Terms and definitions
The terms and definitions defined in GB/T 20733 and below apply to this specification.
3.1 Electroluminescence; EL
The phenomenon of luminescence caused by the action of electric field.
Note. EL is divided into two types, one is injection electroluminescence of semiconductor pn junction; the other is intrinsic electroluminescence. Head
In the past, the photovoltaic industry mostly used minority carrier injection electroluminescence under forward bias of photovoltaic cells and modules.
3.2 EL defectELdefect
Through the effect of electroluminescence, it is observed in photovoltaic cells and modules that adversely affects the performance of battery modules.
Characteristics usually include black centers, black edges, bright spots, cracks, broken grids and dark flakes.
3.3 linepairs
Pairs of black and white stripes of the same direction and width.
According to relevant standards, the number of equally spaced black and white line pairs per millimeter that can be distinguished is used to express the resolution ability (such as visual
resolution and ultimate resolution).
[Source. GB/T 20733-2022,3.4.8]
3.5 EL spatial resolutionELspatialresolution
Characterize the detail resolution ability of the electroluminescence defect detector on EL images.
Note. According to the common imaging quality testing methods of optical imaging systems, black and white stripes of equal width are usually used as the imaging target pair.
The spatial resolution of the imaging system is tested, expressed in Rs, and its unit is line pair per millimeter (lp/mm).
Test pattern configuration specified for testing the characteristics of EL imaging systems.
3.7 Forward current forwardcurrent
The direct current flowing into the positive terminal of a photovoltaic cell or module.
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