Building Ebike pack with tubing structure

[Sameguy]

I'm just getting into putting together an Ebike and plan on building my battery pack. I'm planning on using new 18650's and not quite ready to throw down for a spot welder and have read soldering has it's drawbacks, although I can solder pretty well. I was wondering what the collective brain trust thinks about simply building the structure of the pack with tubing, more specifically, 6-7 18650 batteries in each tube with some way of mechanically fastening the ends to provide contact between batteries. Then each set of 2 tubes could be a cell, then packing them all in a larger tube. The numbers below represent the cell pairs in the larger tube.

I'm not sure what to use for the tubes, end pieces etc but it seems like a simple way to construct various size packs that would not require welding or soldering to the battery ends.

 

[Hillhater]

Try a forum search.
you will find many threads on this very topic, ..such as this one just down the page..
https://endless-sphere.com/forums/viewtopic.php?f=14&t=82777
..and..
https://endless-sphere.com/forums/viewtopic.php?f=14&t=69738&hilit=18650+pipe
and
https://endless-sphere.com/forums/viewtopic.php?f=14&t=57810

 

[Gregory]

Yep, a search for No Solder gets a few hits.

 

[Sameguy]

Thank you for the links, I have seen those threads and read them thoroughly. Much appreciated

 

[dogman dan]

some have made neat battery boxes from square tubing,, such as rain gutter downspout. Not sure how 18650's fit in that. But its; easy stuff to work with, the right shape.

 

[Hillhater]

Those larger PVC tubes can be heated in a warm oven (-130-150 deg C) and reshaped to suit any form you want.