Our expertise focuses on the following applications: Terminal welding, compacting, splicing, hot crimping, welding under braze, micro welding, diffusion bonding of copper foils and welding of copper and aluminium connections. Our solutions are used in the following areas: power distribution, HV cable harness, inverter systems, HV storage/batteries, e-traction, AC/DC charging applications, sensor signal transmissions, safety paths, electronic assemblies.

Our portfolio includes table-top machines, semi-automatic units as well as fully automatic systems with optional process chaining.

We offer our professional support from the initial product development phase through prototype production to the finished concept of a customized solution.

Our highlight products

Resistance welding of aluminium and copper connections in the vehicle electrical system and power distribution

Our innovative solutions enable a secure and long-term stable connection between aluminium and copper without intermetallic phases and thus allow the connection of:

  • Cu terminals (BusBars) and Cu cables with ALU-BusBars
  • ALU-strands to (HV) contacts

Our connections guarantee min. contact resistance, high retention forces and space efficiency.

Welding of flex busbars

Flex busbars, otherwise known as flexible HV connectors, are used to compensate for tolerances in the field of power distribution. They consist of foil layers with a thickness of 0.05 mm to 1 mm in any number or of braids in the desired cross-sections. In both variants, the ends are welded over large areas of up to 1,000 mm2 in fractions of a second without direct cooling.

Our website: https://www.strunk.de/