I'm just kicking this around and would be interested in other thoughts.

In the R-Pi E-14 forum someone wanted to know if there is such a thing as a=
=20
series connected lithium battery charger.

I suggested a module made up of a lithium charger IC,  a switching=20
mechanism that could isolate those batteries in the chain (envisaging no=20
more than 3) once they've charged and some form of electronic load=20
(probably a FET). It has been proposed that each  battery could have its=20
own switch controller and thinking about this a small Pic or Atmel chip=20
could be used to provide the intelligent switching per battery with the=20
charger/battery gauge chip providing the correct charging algorithm, the=20
controller chip would either switch it out of the pack chain or=20
alternatively switch in the active load to maintain that particular battery=
=20
charge state.=20

Does this seem workable in theory?

Colin
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cdb,   14/05/2012
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--




colin@btech-online.co.uk

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