Repeatability and reproducibility testing method

Abstract

The invention discloses a repeatability and reproducibility testing method. The method comprises the following steps of: carrying out light stabilization processing on a test sample to obtain a lightstabilization sample; testing the light stabilization sample to obtain test data; calculating a range mean value and a mean value range according to the test data; and calculating the repeatability and the reproducibility according to the range mean value and the mean value range. The method is greatly helpful for improving the quality of a test system and improving the confidence of a product test result; large test errors or wrong tests caused by incompatibility and mismatching among modules of a power tester are avoided; and a test quality analysis control channel is provided, so that the product quality risk is reduced.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a test method for repeatability and reproducibility. Background technique [0002] At present, in the photovoltaic industry, cell manufacturers or module manufacturers or laboratories often have to accept some indicators of the power tester when purchasing solar simulator power tester equipment, including the repeatability of the power tester, and here The required repeatability usually has no constraints or a relatively simple test method. The most typical is to use a standard battery or standard component to repeat flashing multiple times in a static state in the power tester. The power test obtained after multiple flashes is the largest. The difference between the value minus the minimum value is used to test the mean value, or the maximum value plus the minimum value. In addition, in the process of using the solar simulator power tester by the cell manufacturer or comp...

AI Technical Summary

Problems solved by technology

[0009] At present, when cell manufacturers or module manufacturers or laboratories purchase and use solar simulator power testers, the repeated line test analysis only verifies and analyzes the repeated performance of the tester under static conditions, and the power tester is used in different environments. , is closely related to the tester, test sample, test method, test environment temperature, and test standard. During the use of the power tester, the tester itself is in the process of moving. In this process, the test transmission mechanism of the power tester , sensing mechanism, test tightening mechanism, positioning mechanism and other systems are the biggest test for manufacturers who are equipped with automatic lines to produce solar cells and modules. This part of the error will be directly introduced into the test results of the product. Existing The repeatability test analysis technology shown in the figure above cannot identify the repeatability and reproducibility errors of the overall test system, so far it is vacant

The repeatability test analysis of the existing power tester cannot reflect the error of the overall test system, which will cause a lack of monitoring of the manufacturer's purchase of solar simulator power tester and equipment testing capabilities during use, resulting in certain quality risks and cost waste

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