Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 21,070
The circuit board isn't the only worry, there will also be large forces and vibration on the terminals. The cells themselves need to be fixed firmly in place, but still with flexibility for normal expansion under load. How on earth do you do that, with or without a circuit board?
I would want to hold the cells under compression and avoid mechanical stress on the terminals. Flexible busbars would seem the way to do that, although possibly holding cells under compression would mean the terminals don't move.
Alternative if compression isn't needed is to let them float and have rigid busbars. That would work with cells vertical and enough space between them for whatever pillowing is going to occur, but busbars couldn't attached during shipping.
I've seen some pictures of welded busbars that had bends, allowing flex as cells expand.