2013年2月20日星期三

Cognex technology to optimize the production of thin-film solar


JENO PTIK-VOTANTM Solas100/200 is used to draw a pattern on the thin film solar modules using a laser and / or needles in each of the processing step (P1, P2, and P3). Standard machine model contains six industrial camera and Cognex VisionPro? Vision software can be used to calibrate the processing tools, to determine the state of wear, and check the correct processing of solar module.

Settings for each module, processing and follow-up of the detection process only takes 60 seconds, which enables manufacturers able to obtain a yield advantage in the fierce competition in the sustainable energy market. Photosensitive semiconductor-based thin-film technology is based on a glass substrate a vapor deposition or sputtering, less energy and materials generally used, and lower production costs compared to silicon solar cells.

Manufacturers lower production costs in the pricing initiative, Germany has reduced incentives for solar charge controller products. Modern thin film solar cell by a metal layer, a semiconductor layer and a transparent conductive oxide layer.

In the first processing step, VOTANSolas100 drawing pattern in the bottom layer using a multi-beam laser, referred to as P1. CIS / CIGS modules with mechanical tools underlying the above two layers, called P2 and P3. The the integrated gilling device can be up to 1.5 m / s speed accurately diagram drawn on the surface.

In the process, each needle is a separate operation and positioning system according to the battery size quickly adjust and accurately respond to changes in demand. The automated needle adjustment method can minimize set-up time and increase production.

The visual system in a matter of seconds to record the actual position of the tool. At the same time there will be another three camera measurement automatically feed solar cell P1 trajectory. The camera can be provided to automatically adjust the three reference points, and the VisionPro data used to adjust the machine coordinate system and corrective tool path can also be provided according to the orientation of the P1 structure.

The goal of the process is to minimize the P1 structure relative to the dislocation of the P2 and P3 layer, thereby improving the cell efficiency. And then deal with the tools to continue drawing a positioning accuracy of 5μm layer of P2 and P3. In the final detection step, the other two cameras again careful examination of the solar module, and by the VisionPro vision software detection quality, find minor damage, broken glass, and the layer between the particles may occur separated.

You can easily machine with VisionPro vision software quick integration into complex production lines. The software will ignore irrelevant differences on the surface of the solar panel, to focus on the important features of the relationship between product quality. The world leader in visual software with a variety of tools, without any complicated pre-processing the image, thereby increasing the speed of application development and reduce the cost of the product life cycle.

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