Excitedly I started putting together a battery case for some SCiBs: 60Ah/3p6s configuration. I have made it to such tolerances that the cells slide in comfortable and fit snugly such that there is no room to move. In fact, there is a vacuum when trying to remove the last cells in each bank.
In retrospect, I have now realized that I have omitted spacing the +/- on each parallel cluster. From a lot of the lithium builds I have seen folks just tape the cells together directly with nylon tape but now I'm worried about safety.
I have a few questions now:
In retrospect, I have now realized that I have omitted spacing the +/- on each parallel cluster. From a lot of the lithium builds I have seen folks just tape the cells together directly with nylon tape but now I'm worried about safety.
I have a few questions now:
- Do the SCiBs use the the casing as a common grounding point?
Reason I ask is that out of curiosity when I test voltage on "+" to the housing I get 1.4V and "-" to the housing I get 0.9V which gives a 2.3V potential, however when I test for continuity it reads as open which is confusing. - Ultimately I'm looking at redoing this and making space for a 1/8" wood shim between the +/- banks as indicated by the yellow lines as in the attached image of the current build. Would this be sufficient, or is an an additional shimming for the planar side of the cells also be required (effectively each cell being spaced exclusively)? I'm guessing this is not required as the cells are ultimately tied at the parallel junction, correct?