So i've been building ebikes/karts for a few years now, gone though about 3 iterations of bikes and most recently a dirtbike frame fitted with a 48v altrax/etek with SLA batteries and and so forth...
ANYWAY the point is, i'm going to be building a full on long range high speed fully lithium motorcycle and i realized....No way to get 72v lithium packs in parallel effectively without risking some life shortage via one pack faster then the other.
I'm in college for mechanical engineering, so i just asked one of my electrical engineering friends to come up with a cell balancer that can monitor voltage/ouput from every cell, and balance each pack in parallel thus creating a perfectly even discharge EVEN, if the cells were not balanced to begin with!
Design and prototype cost for this kind of thing are rather high so we figured we would offer (once we get it working) 48v, 60v, and 72v parallel cell balancers for others so they don't have to spend a fortune (or just not be able to do it at all).
Additionally those wishing to use multiple ping packs for high power applications (as we are) should not be using the ping BMS for discharge (but you can still have it on for charging in our setup) and use something like the kelly motor controller to limit your amps intelligently, so no shut-offs, no re-booting, same current limiting effect.
Just wanted to know what the interest level is on parallel cell balancers, should not only increase range a little bit, but cell life by far. Additionally, you can (probably) order a bunch of cells for a custom pack (ask for no duct tape lol) and make it yourself.
Friend of mine has a ping pack now, and is getting more, so you can bet we will have all sorts of data aq. once we get it running. (cell balancer can even have data logging to an SD card or similar).
I'll be getting several ping packs later when i get some more moolah.
Just wanted to know what the interest level is on parallel cell balancers, should not only increase range a little bit, but cell life by far. If enough people want em, ill invest more and see if we can't have fancy and low tech versions...Fancy versions being able to individually monitor and log data etc etc...