Bosch Unwraps New Module Prototypes

Bosch Solar Energy AG has unveiled three prototypes of new crystalline and thin-film modules. Debuting at EU PVSEC (European Photovoltaic Solar Energy Conference and Exhibition), the company’s thin-film product portfolio is to be supplemented by a micromorphous product with a frame. With its thermally toughened front glass panel, the module has a mechanical strength of 2400 pascal. Weighing in at 16 kilograms, it is substantially lighter than conventional thin-film glass-glass laminates (typically, around 25 kilograms).

Bosch says the module can be mounted using established assembly systems. In addition, A “low voltage concept” is also in preparation, which the company says will mean less wiring work for installers.

“Due to its special properties, this module type is highly suitable for steeply sloping roofs and roofs that do not face full south,” says Peter Schneidewind, Bosch Solar Energy AG management board member responsible for sales.

The new module prototypes also include a crystalline solar module based on black monocrystalline silicon solar cells. With a black anodized frame and black backing foil, this model has been given a completely monochromatic design to satisfy strict aesthetic demands for special architectural settings. 

Also at EU PVSEC, Bosch Solar Energy unveiled its first monocrystalline MWT (metal wrap-through) rear-side contact cells, developed jointly with ISE–the Fraunhofer Institute for Solar Energy Systems in Freiburg, Germany. In this cell, which is integrated in a high-performance panel, the front bus bars have been shifted to the back of the panel, meaning that the areas of the solar cell that were previously “shaded” are now available for converting sunlight into electrical power.

“We are quite proud of this successful project work,” says Dr. Hans-Joachim Krokoszinski, head of engineering/crystalline cells, describing the first results of development in the field of MWT rear-side contacts. “No other company has, so far, been able to implement the MWT cell concept with monocrystalline wafers.”

Bosch Solar Energy says work has begun on the final project phase, in which the contact structure and process parameters will be optimized.

(Read more at Photovoltaics World)

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