Munich  /  11/12/2019  -  11/15/2019

productronica

More efficient and precise laser microwelding with blue laser radiation

Blue laser beam for efficient and precise laser beam micro welding
© Fraunhofer ILT, Aachen

Blue laser beam for efficient and precise laser beam micro welding

  • Self-developed optics for demanding welding tasks
  • Precise control of energy coupling through increased absorption in copper
  • Flexible weld seam design through combination with a glavanometric laser scanner
  • Enabling innovative and advanced joining processes

Contacting of battery cells by laser beam microwelding

Joining of 18650 cylindrical cells to form a battery pack (OPTEMUS)
© Fraunhofer ILT, Aachen

Joining of 18650 cylindrical cells to form a battery pack (OPTEMUS)

  • Joining of cells to modules and packs by highly efficient laser beam micro welding with highly brilliant laser beam sources
  • Joining of highly reflective materials such as copper and aluminium
  • Choice of complex geometries and demanding joining tasks due to flexible beam guidance and modulated laser radiation

Laser Impulse Metal Bonding LIMBO

LIMBO for material-locking joining connection between massive interconnectors and printed circuit boards
© Fraunhofer ILT, Aachen

LIMBO for material-locking joining connection between massive interconnectors and printed circuit boards

  • Innovative joining process for contacting power electronic devices
    (high thermal stability and low contact resistance)
  • Contacting of thermally and mechanically sensitive joining partners
    (e.g. printed circuit boards, DCB, DAB)
  • Precise control of welding depth (< 10 µm)