On Wed, Jul 5, 2023 at 02:36 PM, Tim Hutcheson wrote:
it seems that 2^n-1 switches would be needed
Surely this is not Sam Ben-Yaakov's intention, as he readily describes a natural self-balancing behaviour (propagation indeed) permitting the use of 2 switches per cell in case it is acceptable that the full cells string balancing takes 5 hours. Such a natural self-balancing propagation happens with a 94% efficiency in case of balancing a string of 10 Ah cells, using two inexpensive 125 milliohm 12 VDC mosfets (as switches) per cell, and using one inexpensive 12 VDC 20 microfarad polarized capacitor (as charge exchanger) per cell. Plus a microcontroller (possibly a $0.20 one). But at this moment, I don't know if Sam Ben-Yaakov is talking about a 4-cell string, or a 104-cell string.
stephanecnockaert