Nice video! Near the end, I see soldered wires. Can you spot weld copper crimp terminals (examples below) to the pack instead of soldering?
I soldered the cables to the copper then welded the copper to the battery
I wonder if you can get crimp terminals w/o the hole so it can be spot welded with your machine? I suppose the lug hole is preventing the shielding gas from doing its job? It'd be nice not having a soldered termination.
You can terminate however you like, I can easily weld the ring end of a lug terminal onto copper, it is just a bad idea. I thought you meant the tube end. If you want to crimp then roll the copper around the cable, hydraulic crimp, then wekd the tail to the cells.Never try and crimp something you have already welded or soldered, crimping will obviously distort and likely fracture the material.
Good to hear your welder can do that. Why is it a bad idea? Crimp is better than solder for high current connections. Crimp the wire to the ferrule, spot weld the ring terminal to the busbar. As long the busbar is strong enough mechanically, what's the problem?.
I think you can make a crimp for welding many times more suitable than a ring terminal. For a start something with a decent weld area so you can get a load of fusion area. Anyway I think this is getting off topic. It is also possible to weld the cable straight to the copper.
The reason I chose the 2 crimp terminals as examples is because they are available and inexpensive. Who wants to make a "crimp for welding"? I doubt one can easily make a round crimp ferrule that is airtight like the examples.
Nope you need a different weld head for anything other than.cell tab welds / sheet welds for which my weld head has been designed, checkout the commercial sunstone pulse arc videos if you want to see what can be done with a normal pulse arc weld head to stranded copper. This isnt likely to be a priority for me anytime soon albeit such a weld head would be much simpler than the cell weld head, basically just a solenoid. The same welder can be used.
