In this thesis, we explored different welding technologies of pipes for directional degassing
of excess gases from the battery assembly. Before choosing the technology, we studied the
selected materials and their welding possibilities. Based on that we used polyamide 6 (PA6)
and polyamide 6 with 30% of glass fibers (PA6 GF30). Based on the customers requirements
and already existing technologies in the company, we chose infrared welding technology.
We chose IR welding because it is contactless, clean, fast and technically less complicated
method. With that technology, we performed first trials in which we determined the welding
parameters. After setting the parameters, we performed tensile strength and tightness tests
with which we confirmed that the parts meet all the requirements. The test showed that the
best quality weld, that also meets all the requirements, is the one with parameters: pipe
heating time 14 s and distance between the pipe and the IR light 23 mm. The results of the
tests also determined possible improvements that will be implemented later in serial
production.
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