Laminated check and foreign body removal method for photovoltaic modules

Abstract

A laminated check and foreign body removal method for photovoltaic modules comprises the following steps: a laminated check and foreign body removal device for the photovoltaic modules is provided, glass is placed on a supporting device of the equipment, and photovoltaic cell strings are laid on the glass; all the photovoltaic cell strings are welded together in sequence, and a welding strip is trimmed; all the photovoltaic cell strings are lifted and upturned; the photovoltaic cell strings are checked; the surface of the glass is cleaned and tidied, a first EVA layer, the photovoltaic cell strings, a second EVA layer and a backplane are sequentially laid on the glass from bottom to top; and the photovoltaic modules after being laid are laminated and sent to a laminating process for being laminated. During the photovoltaic module laminating process, foreign bodies on the photovoltaic cell strings can be removed, phenomena of a microcrack on the cell, a poor surface of the cell string, poor welding and the like can be checked clearly, laying is carried out layer by layer after the foreign bodies on the surface of the glass are removed, and the problems that laminated check can not be seen clearly via a semi-transparent EVA and removal can not be carried out as foreign bodies are pressed and bonded together in the EVA can be solved.

Description

technical field [0001] The invention relates to the field of photovoltaic module manufacturing, in particular to a method for inspecting and removing foreign matter of a photovoltaic module stack. Background technique [0002] The conventional production process of photovoltaic modules is as follows: battery inspection, front welding, back string welding, lamination laying, module lamination, trimming, framing, welding junction box, high voltage testing and component testing. Among them, the lamination laying process is the lamination process of photovoltaic modules. After the back is connected in series and passed the inspection, the battery string, glass, EVA (ethylene vinyl acetate copolymer) and back sheet (TPT polyvinyl fluoride composite film ) according to a certain level of laying, ready for lamination. [0003] Since there will be defective single cells, poor welding and foreign objects in the stacking process of photovoltaic modules, resulting in unqualified produ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the object of the present invention is to provide a photovoltaic module lamination inspection and foreign matter removal method, which can clearly detect defective cells, poor welding and remove foreign matter during the photovoltaic module lamination process, thereby completely solving the problem of lamination. Layer inspection can not be seen clearly through translucent EVA and foreign objects are pressed in EVA and bonded together and cannot be removed

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