Just a query to see if anyone has done this:
Instead of stacking Li-Ion batteries in series to get a required voltage, is it better to run a boost regulator on each battery, and parallel ( probably including diodes ) the boost cct outputs to get enough current at the required voltage. So each boost circuit would supply current to the load, limited to a settable max voltage.
That way, one could run as many batteries as needed, even with common grounds, and just parallel enough to get the current required.
This makes charging them relatively simple, since one does not need all the complicated charge balancing circuitry, running at different voltage levels, for each part of the stack.
Typical application would be a 24 volt motor supply, with boost circuit on each battery to supply 24v at an amp or so, and enough battery-boost circuits to supply something like 20 amps as a total.
Obviously one would like a PWM controller built in as part of the boost circuit, to control the load, rather than do that afterwards.
Anyone done anything along those lines ?