[China Instrument Network Instrument R&D] Recently, the Research Institute of Metrology of China led the Guangdong Province Metrology Institute to participate in the quality inspection public welfare project "Research on the measurement of the measurement capacity of solar cell standard metrology device" successfully passed the AQSIQ in Beijing. acceptance.
During the two-year project, the research team successfully completed the expected goals, completed the reference solar cell quantum efficiency measurement method, the value transfer technology from the reference solar cell to the solar cell module, the solar cell attenuation mechanism and the sun The three aspects of battery accelerated aging and other research work have laid a good foundation for improving the measurement and measurement capabilities in the photovoltaic field.
Among them, in the study of quantum efficiency measurement methods, the theoretical calculation of the quantum efficiency of solar cells was completed, and the deviation between the calculated and measured values ​​of quantum efficiency theory was controlled at a low level of 4.3%; the reference solar cell to the amount of solar cell modules In terms of value transfer technology, theoretical calculations and experimental corrections of key parameters such as solar cell voltage temperature coefficient, current temperature coefficient, and total irradiation intensity correction coefficient were completed, effectively correcting the open-circuit voltage and short-circuit current of solar cell modules and the standard values. The deviation between them was controlled at 0.95% and 0.58%, respectively, reaching the domestic leading level.
At the same time, Guangdong Metrology Institute has also established indoor and outdoor experimental platforms for solar cells and modules, published 2 domestic core journal articles, and trained a number of metrology and inspection engineers in the field of photovoltaics.
(Original title: Our institute completed the National Quality Inspection Public Welfare Special Project "Referring to the Research on the Measurement Capacity Enhancement of Solar Cell Standard Metrology Devices")