Recognizing Faulty Manufacturing in the Solar Industry

Solar Industry

Enabling a fast and efficient solution for the special assignment of tasks for the production of solar cells, solar cell strings, and modules, the SolarEye plug-in was especially designed for the solar industry.

The solar plug-in SolarEye can recognize faults frequently arising from faulty manufacturing processes, such as cracks and edge breakouts on the wafers. Essential inspection tasks are solved by the inspection system as it detects contour- and edge-breakouts, as well as checking the correct dimensions and thickness.

Furthermore, it defines both the rotation position of the cell and its position on the conveyor band in order to ensure the correct soldering of cells. A solar module for laser scribing inspection extends the solar plug-in, particularly for the Solar Industry adapted reader function. Consequently, it is also possible to read DMC, OCR/OCV, and barcodes on both silicium and solar cells.

3D Measurement

The third dimension is made accessible to the user by the EyeScan 3d smart camera system. Known from the EyeSpector systems, the standard EyeVision software was extended by numerous evaluation commands. As a result, it is as simple to perform 3d measurements as it is 2d tasks.

The rate of yield is increased as a result of the inspection system recognizing chipping during the running production process. The assignment of various tasks from the solar industry can be easily solved with a series of special commands. Detecting microcracks and other wafer defects precisely is vital both for wafer and solar cell production, in order to avoid wafer breakage and ensure the production runs without failures.

Accurate to a μ

Courtesy of the high resolution camera, all errors are accurately recognized to the degree of a μ. This is in order to guarantee the recognition of the defect wafer so that it can be discharged from the production line, consequently lowering the breakage rate considerably. This enables a rise in the rate of yield.

The inspection system’s evaluation software collects information about the error characteristics of the solar wafer during the running production. This is used to provide the user with a continuous and systematic enhancement of the process of production. Low-cost, maximum accuracy is offered by this system.

This system’s innovative aspect is that it is completely integrated. Consequently, it is as simple to set up the 3D evaluation as it is a common image processing system. The system can be directly connected to a monitor to both supervise the running production and check measurement results.

The image data and result values can be transferred courtesy of further interfaces such as Gigabit Ethernet, RS232 and RS485. Communication with robots is also made possible by the extensive communication interfaces of the 3D systems, which also enable direct data transfer to the company software of ORACLE, SAP and others.

Thus, production results are at all times and everywhere available in the company.

The Laserscribing Tool

The high speed Laserscribing module completes the SolarEye software plug-in, which was specially developed for the Solar Industry.

The counteracting of errors which often arise in production, such as cracks and edge breakouts, is enabled by the Laserscribing module.

ChipControl for the Solar Industry

This information has been sourced, reviewed and adapted from materials provided by EVT Eye Vision Technology.

For more information on this source, please visit EVT Eye Vision Technology.