Micro Joining

Overview

Our range of services

Fraunhofer ILT researches and develops laser-based joining technology in which different processes are used, such as laser welding, laser soldering or laser bonding, depending on the material class. The institute continues to develop processes such as the precision welding of metals, plastic welding or glass and ceramic processing, and adapts them for industrial applications. One focal point lies in the development of high-performance energy storage systems: A laser can reliably generate electrical contacts of copper materials and dissimilar metal combinations – for example, for the construction of battery modules or packs. These connections are characterized by their ability to carry high current.

Special tunable lasers can be used to weld plastic-metal compounds for the automotive industry or transparent and highly crystalline plastics for electronics or medical technology particularly well. Thanks to innovative irradiation technologies, the thermal load on the workpieces remains low. In the field of display, lighting and sensor technology, lasers are also used to encapsulate electronic components, to weld transparent plastics without absorbers and to solder glass for hermetic packaging.

The services offered by Fraunhofer ILT in the field of joining technology range from customer-specific process development, integration in industrial plant engineering, services in the areas of simulation and diagnostics, and comprehensive consulting.

Contacted 18650 battery cells.
© Fraunhofer ILT, Aachen, Germany.
Contacted 18650 battery cells.
Laser beam micro-welding of pouch cells.
© Fraunhofer ILT, Aachen, Germany.
Laser beam micro-welding of pouch cells.
Glass-metal connections consisting of a borosilicate glass lid and a Kovar sleeve.
© Fraunhofer ILT, Aachen, Germany.
Glass-metal connections consisting of a borosilicate glass lid and a Kovar sleeve.

Micro Welding

  • Micro welding of steel, copper, aluminum
  • Welding of heterogeneous materials
  • Micro joints for electrical and precision engineering

Soldering

  • Micro soft soldering for electronic / electrical engineering
  • Brazing of heterogeneous materials
  • Selective glass soldering for display technology and photovoltaics

Bonding

  • Si / glass joints
  • Si / Si bonding
  • Micro welding of dielectric materials
  • Packaging solutions for sensor technology and microsystems technology

Plastics Welding

  • Welding of contours and welding simultaneously
  • Transparent / transparent joints
  • Metal-plastic joints

Brochures

Our brochures offer a quick view onto our service portfolio. Find more detailed information in the “project results“ tab.

 

“Micro Joining with Laser Radiation“

 

“Laser Processes for Hydrogen Technology”

 

“Laser-Based Contacting of Batteries and Power Electronics“

 

“Laser Processes for the Efficient Production of Energy Storage Systems“

 

“Laser Technology in Photovoltaics“

 

“Lasers in Plastics Technology“

Video: Laser-based micro joining for a wide range of connections

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From medical technology and hybrid joints for lightweight applications to battery and fuel cell production for the future of mobility: Scientists from the Micro Joining Group at Fraunhofer ILT are developing a wide range of joining techniques for various applications. Here, laser technology allows high-precision welding with minimal thermal stress and the generation of the smallest seam structures. Fraunhofer ILT possesses cutting-edge equipment and a spectrum of different laser beam sources to develop customized solutions for industry and science.

Markets

Laser technology can solve demanding tasks in many different industries. Whether as a tool in automotive production, as measuring equipment in the environmental sector, as a diagnostic or therapeutic instrument in medical technology or as a communication medium in space technology, the laser provides multiple uses with high productivity and high efficiency.

Read up about the innovations of the Fraunhofer ILT in a few selected industries and convince yourself!

 

Research with us!

Please do not hesitate to contact us if you have any questions about general topics! Our contact persons are happy to get in touch with you.