Battery tapping / multiple voltages from battery banks

[ejleiss]

Hello,

My issue has to do with obtaining multiple voltages from a battery bank. I have twenty four 3.6V battery cells that I want to wire to get about 43 volts, 36 volts and 12 volts. I know that just tapping off at the desired voltage is not the best way to do this due to unequal loading and discharge rate. I was hoping someone could inform me on the best way to do this, and if there are wiring diagrams or schematics that show things like this?

Thank you.

 

[KlausST]

Hi,

one way could be to multiplex the batteries to share the load in time.

Another way is to connect all in series (or parallel, or combined) and use a DC/DC switcher to generate the desired voltages.

Klaus