George, probably a stupid question, but I’m gathering you’ve already been on mynissanleaf.com? I don’t know if the moderators pull anything like that off immediately, but I look fwd to hearing what others have to say about this...
Sincerely, Bob Bath Note: any misspellings of the contents of this message are due to 54 y.o. vision, hyperactive spell check changing what I typed, or fat fingering— not cluelessness. > On Aug 13, 2019, at 9:14 PM, George Tyler via EV <ev@lists.evdl.org> wrote: > > Has anyone had a good look at the operation of the Leaf BMS. Circuit is > very different, and so is the operation. First thing I noticed when I got > leafspy was that the BMS works ALL the time, not just above a certain > voltage. Leafspy also shows it working on the lowest cells, so it's not just > a shunt? the circuit shows inductors in series with all measuring wires to > the batteries, both sides of each cell. These points are then coupled > together by capacitors, the whole pack. > My thinking is that this could be energy transfer path between any cells > and multiple at the same time. This count be done via half bridge inverters > on each of the wires. I have searched, but find nothing, apart from some > comments that it is a small surface mount resistor that is the shunt, and > only 7.5 mA. That would actually do nothing for a 60ah battery. > > > > >> On 14-Aug-19 3:06 PM, Mr. Sharkey via EV wrote: >> >> A URL or name for this company would be appreciated. >> >> Try this, although it seems some of the products are >> discontinued/out-of-stock: >> >> https://evparts.com.au/ev-power-bms.html >> >> >> Let me know once you have a few extra to sell. >> >> This will likely be a fall/winter project, once the year's firewood is put >> up and the outdoor chores cease due to the weather. >> >> Another part of the repower project is going to be to rework a Todd Power >> Source to be a lithium-compatible 36v charger. I'll probably run barefoot >> without a BMS in the short term and carefully balance and charge manually >> until I get something worked out. >> >> _______________________________________________ >> 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) >> >> > _______________________________________________ > 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) > _______________________________________________ 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)
