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ADG1612 for Lithium Battery Management

An n-cell active charging/balancing system for n-cell series battery blocks connected in parallel is context of this discussion.  Typically EV battery systems are parallel blocks connected in series.  This does not allow for individual cells in the parallel group to be identified when errant.  By using the ADG1612 4 channel analog switches and being careful about inter module connectivity, a n-cell battery block front end PCB, connection backplane, and microcontroller managed active balancer ICs can be integrated to perform this task.  I have attached an *.docx of what such a system may look like.  I would like to find a University group that would take the concept and create a prototype for analysis as a one year special project, typical for some University EE Departments.  Thank you for looking.

attachments.zip
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  • Hi Ken,

    ok, this limits us.  The only other part would be the ADG4612 but again the Ron would be above 1ohm and it is default NO with no power supplies. But it can power up off a single +5V supply.  Unfortunately we don't have any NC parts available.  You might have to investigate a mechanical relay approach.

    Regards,

    Eric.

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  • Hi Ken,

    ok, this limits us.  The only other part would be the ADG4612 but again the Ron would be above 1ohm and it is default NO with no power supplies. But it can power up off a single +5V supply.  Unfortunately we don't have any NC parts available.  You might have to investigate a mechanical relay approach.

    Regards,

    Eric.

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