Extrusion & Post
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EVA Photovoltaic Module Broken Cells
Fenómeno del problema
After lamination, the cells show microcracks or fragments.
Análisis de la causa
Improper soldering with tin buildup or tin slag crushes the cells during vacuuming; the cells have original hidden damage, lamination is too early while the EVA has good fluidity; improper board-lifting gestures also cause crush injuries.
Solución
①Check the soldering quality and strengthen employee training; ②adjust the lamination process, increase the vacuuming time and reduce the lamination pressure; ③standardize the board-lifting operation; ④inspect incoming cells.
Conclusión clave
Broken cells are a typical problem of the superposition of human factors and process; soldering quality and operation specifications are the focus of prevention and control.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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