A kind of el test connection device

Abstract

The invention provides an EL (Electro-Luminescence) test connecting device comprising a wire box base, a plurality of copper sheets, connection wires and a fixture, wherein a plurality of lead wires capable of being conducted with a solar battery are arranged on the wire box base; the copper sheets are fixed on the wire box base and are used for contacting with an ejector pin of an EL tester; the copper sheets are correspondingly connected with the lead wires one by one through the connection wires; and the fixture is arranged on the bottom face of the wire box base and can be clamped on the solar battery. According to the EL test connecting device provided by the invention, the copper sheets are not arranged on a former box cover, but are fixed on the independent wire box base, so that the limitation of a box cover structure can be avoided, and the positioning effect is better; the rate that the copper sheets are far away from a contact position of the ejector pin in a downward-moving process is reduced, so that the test success rate can be improved; and the independent wire box base is connected with the solar battery through the lead wires without modifying the box cover, so that the influence of the type of a junction box on an EL test can be avoided, and the generality of the EL test for different solar batteries can be improved.

Description

technical field [0001] The invention relates to the technical field of solar cell production, and more specifically relates to an EL test connection device. Background technique [0002] After the solar cell is assembled, it is necessary to use an EL tester (EL tester, the abbreviation of Electroluminescence in English, defect test. EL tester, solar cell module defect detection automatic tester, using the principle of electroluminescence of crystalline silicon, adopts high-resolution The high-speed CCD camera captures the near-infrared images of the components, obtains and determines the defects of the components) and conducts the solar cell to conduct a crack test on the solar cell to test whether its production quality meets the process requirements. [0003] In the prior art, the process of testing the solar cell by the EL tester is completed in the dark box, and the most direct test method is to arrange personnel to connect the EL tester and the lead wire of the solar ce...

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Problems solved by technology

[0004] However, the above-mentioned test method also has defects: due to the structural limitation of the box cover itself, the copper sheet placed on it is relatively prone to displacement, so that the copper sheet cannot be effectively contacted with the conductive metal in the junction box or deviates from the position when the test thimble moves down. As a result, the EL tester cannot be effectively conducted with the solar cell under test, making the test fail, and the success rate can only reach 90%; because the junction box models installed on different solar cells may be different, and the modified box cover It can only be installed in combination with the model and its corresponding junction box, but cannot be installed with other types of junction boxes, which makes this test method subject to certain restrictions. If multiple different types of box covers are modified at the same time, the workload and Production cost; this test method is only applicable to solar cells with removable box covers, but cannot be tested for solar cells with non-removable glue-filled junction boxes

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