Optical inspection and measurement of solar modules with KUKA String Test

  • KUKA

Augsburg-based automation specialist and systems integrator KUKA Systems GmbH will again this year have its own stand at what is Asia's biggest trade fair for the photovoltaic industry.In Shanghai the company, which already has a presence on the ground in China in the form of a subsidiary, will be showcasing in-house products and solutions aimed at enhancing quality assurance in the automated production of photovoltaic modules from 22 to 24 January 2011. The product range at the fair will be rounded off by process equipment and automated system solutions for wafer production.

KUKA Systems @ SNEC PV Expo 2011 (http://www.snec.org.cn):
22 to 24 February 2011 | Shanghai, P.R. China
Hall E7, Stand 570

The KUKA String Test is particularly recommended for automated production, where it can enhance the quality and output of the modules produced. A camera system is used to measure the strings, check the position of the bus bars and give the cells a final inspection. This ensures that the robot positions the string optimally and that faulty parts are segregated for manual reworking.
An optional EL (electroluminescence) test reveals cracks (known as micro cracks) and functionally inefficient areas of the solar cells. The procedure takes between 8 and 20 seconds, depending on the scope of the test and the string size, at the end of which a clear quality analysis is available. In cell strings that have passed the test, the connecting strands are cut to size for the relevant deposition position in readiness for the subsequent process step, cross-soldering.

KUKA Systems

KUKA Systems is an international supplier of flexible automation systems for the automotive, aerospace, energy and industrial solutions industries. A workforce of around 3,500 across the world works on ideas, concepts and solutions for automated production as well as the provision of products and services for virtually all tasks in the industrial processing of metallic and non-metallic materials.

In the energy segment the company offers engineering services, automated production modules and complete turnkey production lines for the photovoltaic, solar thermal systems and wind power sectors.Key technologies from KUKA Systems are also found in power station construction and wind turbine construction. KUKA Systems' know-how can make a particularly useful contribution wherever industrialised processes place high demands on quality, quality monitoring and availability, which is especially the case in the production of solar modules. Consistent quality is achieved alongside high production volumes. KUKA Systems is also able to realise plants in orders of magnitude in excess of 500 MW.

The range of products and services is presented and marketed internationally by subsidiaries and distribution agents in Europe, the Americas and Asia. KUKA Systems posted a total order volume of around €615 m in 2009.



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