Extrusion & Post
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EVA Photovoltaic Module Broken Cells
Problem Phenomenon
After lamination, the cells show microcracks or fragments.
Cause Analysis
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.
Solution
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.
Key Takeaway
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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