I think Ken and I are looking for the same thing (I hope). I'm looking to use "dumb" (non CAN Bus) chargers with a cell pack with a BMS (or in Ken's case maybe no BMS). In my case the chargers I have are designed for lead acid so they have a higher finishing voltage than acceptable for the pack. Basically employ a circuit that measures voltage and turns a relay on & off as needed, cycle as necessary or timed. I think these would be much similar to those ebay programmable digital thermostats with relay, except with voltage instead. As the pack reaches top charge, the relay would see the high voltage and open a relay, likely connected to the AC side of the charger and turn it off. I understand with a BMS that as per cell voltage is reached shunts/resisters are used, what happens when the pack is fully charged without a smart signal to the charger? Do the shunts just continue to work absorbing charge/ generating heat?
On Mon, Mar 18, 2019 at 6:22 PM EVDL Administrator via EV <[email protected]> wrote: > On 18 Mar 2019 at 14:04, ken via EV wrote: > > > there must be some kind of modaul that you'd input on seconds / off > seconds, > > then it would run a relay to controll charger on/off or program an > > ?adrainal? the little computer. > > You're talking about charging, yes? I can't understand why you want to do > this. I don't see the advantage. What am I missing? > > David Roden - Akron, Ohio, USA > EVDL Administrator > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > EVDL Information: http://www.evdl.org/help/ > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > Note: mail sent to "evpost" and "etpost" addresses will not > reach me. To send a private message, please obtain my > email address from the webpage http://www.evdl.org/help/ . > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20190319/89ed59b1/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
