Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fraunhofer ISE and Heraeus develop Novel Cell Connectors for High-performance Solar Modules

25.10.2018

The Fraunhofer Institute for Solar Energy Systems ISE and Heraeus are researching and optimizing novel, selectively coated cell connectors in a joint research project. The Selectively Coated Ribbon (SCRTM) cell connector achieves an average gain of 1.9 W in conventional 60-cell solar modules. The connector can be used in industrial PV module manufacturing without system modification and at no extra cost. Fraunhofer ISE has successfully tested modules with the SCR connector in its accredited TestLab PV Modules.

Heraeus and Ulbrich developed a process for the production of the efficient cell connector and presented the new product to the professional audience in September 2018 at the EU PVSEC in Brussels.


Solar cells connected with SCR connectors manufactured in the Module- TEC of Fraunhofer ISE.

© Fraunhofer ISE


Cell-to-Module analysis for SCR and standard cell connectors. The power gain of 1.85 W is due to the improved use of light.

© Fraunhofer ISE

Crystalline silicon solar cells are usually interconnected by solder-coated copper connectors. These connectors are soldered to the front and backside metallization and conduct the electric current.

While conventional cell connectors cannot harness incident light, the coated edges of the SCRTM connector reflect the light indirectly onto the cell surface, thereby providing increased performance. The effect works independently of the angle of incidence.

Dr. Markus König, project manager of the publicly funded project for the development of SCRTM cell connector at Heraeus confirms: "Our project partner Fraunhofer ISE successfully supported the most important development steps of the new cell connector through targeted tests. Thanks to the close cooperation, we were able to develop the SCR connector in a short time and reliably validate the product."

Achim Kraft, team leader for connection technology at Fraunhofer ISE, is convinced: "Our tests have confirmed the performance gain and the reliability. As a drop-in replacement in industrial process lines, the new connector has the best chance of asserting itself on the module market."

Calculation of performance gain by SmartCalc.CTM

The software tool SmartCalc.CTM of Fraunhofer ISE enabled the exact calculation of the performance gain by the SCRTM connectors in advance. The CTM (Cell-to-Module) analysis showed a power gain of 1.85 W by increasing the internal reflection. Module measurements on a preliminary series showed an average power increase of 1.9 W, thus confirming the results of the CTM calculation.

Modules produced with the SCRTM connector showed high reliability in load tests according to IEC 61215 test standard. In extended tests carried out at the TestLab PV Modules at Fraunhofer ISE, the cell connectors were examined under specific loads such as temperature changes, increased UV radiation and moisture storage.

The combination of UV exposure and moisture is realized in a special climate chamber and goes beyond the usual standard tests of the IEC standard. In comparison to the common cell connector with plain solder coating, there were no restrictions with regard to reliability.

The development work is part of the "CONNECT Combined Metallization and Connection Technology for Efficient PV Modules" project and is funded by the Federal Ministry for Economic Affairs and Energy (BMWi) (Grant number: 0324052B).

About Heraeus

A globally leading technology group, Heraeus is headquartered in Hanau, Germany. Founded in 1851, it is a family-owned portfolio company which traces its roots back to a pharmacy opened by the family in 1660. Today, Heraeus combines businesses in the environmental, energy, electronics, health, mobility and industrial applications sectors.

In the 2017 financial year, Heraeus generated revenues of €21.8 billion. With approximately 13.000 employees in 40 countries, the FORTUNE Global 500-listed company holds a leading position in its global markets. Heraeus is one of the top 10 family-owned companies in Germany.

With technical expertise, a commitment to excellence, a focus on innovation and entrepreneurial leadership, we are constantly striving to improve our performance. We create high-quality solutions for our clients and strengthen their long-term competitiveness by combining unique material expertise with leadership in technology.

Weitere Informationen:

https://www.ise.fraunhofer.de/en/press-media/press-releases/2018/novel-cell-conn...

Karin Schneider | Fraunhofer-Institut für Solare Energiesysteme ISE

More articles from Power and Electrical Engineering:

nachricht Energy-saving new LED phosphor
24.04.2019 | Universität Innsbruck

nachricht Neuron and synapse-mimetic spintronics devices developed
17.04.2019 | Tohoku University

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Energy-saving new LED phosphor

The human eye is particularly sensitive to green, but less sensitive to blue and red. Chemists led by Hubert Huppertz at the University of Innsbruck have now developed a new red phosphor whose light is well perceived by the eye. This increases the light yield of white LEDs by around one sixth, which can significantly improve the energy efficiency of lighting systems.

Light emitting diodes or LEDs are only able to produce light of a certain colour. However, white light can be created using different colour mixing processes.

Im Focus: Quantum gas turns supersolid

Researchers led by Francesca Ferlaino from the University of Innsbruck and the Austrian Academy of Sciences report in Physical Review X on the observation of supersolid behavior in dipolar quantum gases of erbium and dysprosium. In the dysprosium gas these properties are unprecedentedly long-lived. This sets the stage for future investigations into the nature of this exotic phase of matter.

Supersolidity is a paradoxical state where the matter is both crystallized and superfluid. Predicted 50 years ago, such a counter-intuitive phase, featuring...

Im Focus: Explosion on Jupiter-sized star 10 times more powerful than ever seen on our sun

A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter

  • Coolest and smallest star to produce a superflare found
  • Star is a tenth of the radius of our Sun
  • Researchers led by University of Warwick could only see...

Im Focus: Quantum simulation more stable than expected

A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.

Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...

Im Focus: Largest, fastest array of microscopic 'traffic cops' for optical communications

The technology could revolutionize how information travels through data centers and artificial intelligence networks

Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

Fraunhofer FHR at the IEEE Radar Conference 2019 in Boston, USA

09.04.2019 | Event News

 
Latest News

Proteins stand up to nerve cell regression

24.04.2019 | Life Sciences

New sensor detects rare metals used in smartphones

24.04.2019 | Life Sciences

Controlling instabilities gives closer look at chemistry from hypersonic vehicles

24.04.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>