A rapid detection system for roll-to-roll surface of stainless steel base of cigs cell

Abstract

The invention relates to a roll-to-roll surface rapid detection system for the stainless steel base of a CIGS battery sheet, which solves the problem that the surface quality detection of the stainless steel base coil mainly depends on the visual observation and judgment of workers, and the work efficiency is low. There are several conveying rollers for conveying the base coil between the unwinding shaft and the rewinding shaft of the device, and a surface detection system is arranged between two adjacent conveying rollers. The surface detection system includes a laser range finder, a laser range finder and A beam splitter is arranged between the surface of the base coil. The beam splitter divides the laser light into a transmitted beam and a reflected beam. The transmitted beam forms a point projection on the surface of the base coil, and the reflected beam passes through a beam expander and a 45-degree cone mirror. A line projection is formed on the surface of the coil, and a surface defect detection camera is arranged above the line projection. The invention realizes the synchronous detection of the tension, flatness and oil stain and scratch defects of the stainless steel base coil by using the same light source, and can automatically and quickly detect the defects of the base coil.

Description

technical field [0001] The invention belongs to the field of solar cell production, and relates to a base material detection device for a CIGS flexible solar cell, in particular to a roll-to-roll surface rapid detection system for a stainless steel base of a CIGS cell. Background technique [0002] Flexible solar cells are formed on a flexible rollable substrate with a coating of solar photovoltaic materials. Copper indium gallium selenide (CIGS) thin film battery is a solar photovoltaic material with high mass-to-power ratio and good stability, and is generally considered to be the most promising flexible solar cell material. The multi-component co-evaporation method is the most widely used CIGS coating method. The coating is completed in a vacuum environment, and the elements of copper, indium, gallium and selenium are co-evaporated to form a polycrystalline coating on the surface of the substrate. [0003] The stainless steel substrate of the CIGS flexible solar cell is ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the detection of the surface quality of the stainless steel base coil of CIGS flexible solar cells mainly depends on the naked eye observation of workers, and the whole process needs to be tracked and recorded, the work efficiency is low, and the production cost is high, and a kind of CIGS cell stainless steel base is provided. The roll-to-roll surface rapid detection system can simultaneously complete the simultaneous detection of tension, flatness, and surface oil stains through a set of optical detection systems, greatly improving detection efficiency

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