Data analysis based crystalline silica cell production process monitoring method

Abstract

The invention provides a data analysis based crystalline silica cell production process monitoring method which comprises the following step of performing a test on a finished cell product that is obtained from continuous productions with the consequence that parameters for various performances obtained from the test are divided into a plurality of sub-set groups. and the step further contains four steps: firstly, calculating the standard deviations on the parameters of various performances in each sub-set group and / or observing the frequency distribution graphs of the parameters of various performances and marking the outlier parameters; and through the process controlled SPC data, determining the production process that caused the outlier parameters and removing the influential factors for the production process; secondly, calculating the changing ratios of the parameters of various performances and determining the main factors that influence the standard deviations of outlier parameters among the finished cells; thirdly, controlling the influential factors in the production process that are relevant to the main factors so as to enhance the consistency between the performances of finished cells; and fourthly, repeating step 2 and step 3 until the standard deviations of the parameters of various performances come to zero.

Description

technical field [0001] The invention relates to the field of production of crystalline silicon batteries, in particular to a method for monitoring the production process of crystalline silicon batteries based on data analysis. Background technique [0002] Conventional fossil fuels are increasingly depleted. Among all sustainable energy sources, solar energy is undoubtedly the cleanest, most common and most potential alternative energy source. At present, among all solar cells, crystalline silicon solar cells are one of the solar cells that have been widely commercialized. This is due to the extremely abundant reserves of silicon materials in the earth's crust. Cells have excellent electrical and mechanical properties, therefore, crystalline silicon solar cells occupy an important position in the field of photovoltaics. [0003] In the production process of crystalline silicon solar cells, if the state of each process or equipment is stable, the data obtained from productio...

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Problems solved by technology

[0005] The existing production process or equipment control methods include statistical process monitoring Statistical Process Control (SPC), but each process monitoring is relatively independent. Generally, only the individual process monitoring data is analyzed to determine whether the process is abnormal, so the production process cannot be stably monitored.