Bystronic glass at EU PVSEC show 2011 in Hamburg - Innovative methods for the module production

Date: 1 July 2011
Source: Bystronic
Neuhausen-Hamberg (Germany), June 30, 2011. At the 26th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) 2011 in Hamburg präsentiert the Bystronic glass group will present its photovoltaic’tpa (Thermo Plastic Applicator) for the efficient encapsulation and sealing of photovoltaic thin-film modules.

At stand C24 in hall A4 visitors will be able to view the machine for the application of high-viscous butyl on semiconductor thin-film substrates being at work several times a day. Furthermore visitors will see the new TPedge module which can be produced with significantly reduced costs.

The photovoltaic’tpa is first machine of this type that is capable of working in 24-hour operation without any interruption. Two high-performance pumps ensure that the viscous sealing material is always available. Whereas the use of the conventional butyl sealant stripes from a reel is permanently linked with production interruptions when the material needs to be changed. The dosing pumps of the photovoltaic’tpa apply the material accurately to a tenth of a millimetre. Depending on the film thickness, the application thickness of the butyl varies between 0.5 to 1 millimetres – with the most precise application.

The technology of Bystronic glass is based on decade-long experience in the design of machines for the production of insulating glass, where thermoplastic material is applied as spacer between the glass plates. In the solar power industry, horizontal machines as well as vertical designs are used for sealing all types of semiconductors – cadmium-telluride (CaTe), copper-indium-diselenide (CIS), copper-indium-gallium-selenide (CIGS), microcrystalline silicon (µSi) or amorphous silicon (aSi). The machine can be included at the planning stages for newly designed plants, but can also be integrated into existing systems.

Halving the cost in the module production with TPedge

Furthermore Bystronic glass shows the TPedge module at EU PVSEC, a wafer based solar module which can be produced significantly faster and cheaper than standard wafer modules. The savings in time and costs are due to a simplified module structure and a completely new production technology. The solar cells are conventionally linked together and then fixed between two glass panes. The films and the corresponding lamination can therefore be completely eliminated. The edge sealing of the TPedge module is done by the application of a thermoplastic material (TPS®) at 130 °C so an additional aluminium frame is not necessary.

Due to the draught and stress-free, flexible bonding of the solar cells in glass composites, the new production method is best suited for the even thinner solar cells. The finished module is completely resistant to environmental influences such as rain, snow or wind loads, and extremely resistant to UV radiation. As the structure is simplified, the modules can be recycled much more easily at the end of their product life than the conventionally produced modules: in order that the materials can be disposed of separately the films are easily separated again.

Bystronic glass has developed the technology for the TPedge production in cooperation with Schmid Technology Systems GmbH and Fraunhofer-Institute for Solar Energy Systems (ISE). The TPedge module production ranges can be designed with various expansion stages. In the serial production line, it is possible to manufacture a module in under a minute – compared to the usual standard procedure of 16 minutes. The new production principle is aligned to the seal technology used in the insulating glass production technology. The development of the so-called TPedge process, used in the production of modules with a thermoplastic sealing at the edge of the glass, features a major innovation leap in the entire module production.

About Bystronic glass

Bystronic glass is the most competent and reliable partner for services, machinery, plants and systems in the glass processing sector. Bystronic glass supplies its well-proven machine technologies also in important areas of the photovoltaic industry. This includes preprocessing and front-end and back-end solutions. Bystronic glass is an international brand with globally operating companies that support their customers on site and through own sales and service companies. Since 1994, Bystronic glass is part of the Conzzeta AG, a renowned Swiss industrial holding company.

Bystronic glass media contact

Iris Minten

PR / Online Communication

c/o Bystronic Lenhardt GmbH

Karl-Lenhardt-Str. 1-9

D-75242 Neuhausen-Hamberg

Phone +49 (0)7234 601 120

Fax +49 (0)7234 601 114

iris.minten@bystronic-glass.com

www.bystronic-glass.com

Bystronic glass

Product Manager Solar

Tobias Neff

Bystronic Lenhardt GmbH

Karl-Lenhardt-Str. 1-9

D-75242 Neuhausen-Hamberg

Phone +49 (0)7234 601 320

Mobile +49 (0)172 741 49 23

Fax +49 (0)7234 601 114

tobias.neff@bystronic-glass.com

www.bystronic-glass.com

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