On 10/23/18 1:11 PM, bvgandhi via EV wrote:
Hi,
I have lately come across a lot of work done on reconfigurable battery packs
which uses the concept of scheduling of battery cells. Instead of oversizing
the battery pack with too many cells and adding additional failure modes,
reconfiguration works on the idea of using switches and scheduling cells as
per power requirement of the vehicle. Does anyone here have any opinion or
ideas about this this or has seen previous practical implementations ?
Unless you can REMOVE some of the cells when you don't need them so you
are not carrying around the weight, I see no benefit to switching cells
in or out of a circuit (but keeping them in the vehicle). I think it
would be better to use all of the cells you have (to reduce the total
amp draw / heat buildup / cycle count on any particular cell).
If you can remove sections of the pack, reducing the weight you are
carrying around for short trips may have some benefits, but I see the
major benefit there as a battery swapping "fast charging" ability.
(Or easy battery replacement/upgrades over time.)
Jay
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