Quote:
Originally Posted by Bazz4CQJ
My 3-cell 12V battery will have the cells permanently wired in, and that's why I was hoping that the BMS would take care of optimising the use of each cell.
The design team has handed over the drawings to production, so I should have it for testing in a week or three  .
B |
I was wondering about that -the optimising of charging for each cell. What happens when one cell is fully charged, but the others need to continue? Surely this would require bypassing of the charged cell, and a reduction of charging voltage to the remaining ones. That's why I asked about the (fixed?) input voltage to the BMS - with one or two batteries bypassed but the same input voltage and a lower charging voltage there's going to be a fair bit of power (= heat) to be dissipated somewhere, and I can't see any provision for that on those BMS boards. Maybe they use some sort of switching regulation, but they don't look as though they have that. I think the very least needed is to know the appropriate input voltage(s).
But, none of this is my "special subject"!
Mike