Hi Brian. Carl Clark at Electric Car Parts Company proposed to me recently the concept of parallel 48-volt packs. One of the things about this approach that appealed to me was the certain degree of redundancy it provides. That is, the failure of one of the cells of a pack, effectively killing the pack, would not leave you dead in the water because you could take the failed pack off line and continue (albeit with more limited capacity) with the remaining good one. You might still be able to maneuver around the docks for instance.
This seem to work economically because the lower capacity cells are less expensive, it seems, per AH.
But Carl seemed to be suggesting a two 16-cells-in-series packs put in parallel rather than doubling up individual cells and putting the doubled cells in series. If I understand it correctly, using the approach you describe, if one cell goes bad, you'd have to disassemble (or reconfigure) the entire pack before you could put it back on line. Or have I missed or misunderstood something?
[-tv]
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Posted by: tvinypsi@gmail.com
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