Trace every module back to its cells, glass lot and flash test result.

A module is built in layers: glass, encapsulant, a matrix of soldered cells, encapsulant again and a backsheet. Heat and pressure bind them. The laminator does the rest. A fault in one lot of cells or ribbon can sit inside hundreds of finished panels before anyone sees it, and a buyer’s claim then reaches back across several months of output.

Production software for solar panel makers keeps the lot trail per serial number. Cell grade, ribbon lot, laminator batch and the flash test result all attach to one module record. Pick any pallet and we will follow it from incoming cells, through lamination and flash testing, to the packing list, serial by serial.

Cells arrive in boxes graded by efficiency class and colour, with a supplier lot. Stores log them, along with glass, EVA film, backsheet, ribbon, junction boxes and frames. The stringer solders cells into strings. A layup operator builds the matrix between glass and film, and an electroluminescence check looks for cracks before the laminator closes, since a cracked cell cannot be fixed afterwards.

After lamination the edges are trimmed and the frame and junction box go on. Each module is flashed under a simulator, and its power, voltage and current are recorded against the serial number. Modules are sorted into power bins, labelled, stacked on pallets and listed on the packing list for the buyer’s order. Done.