Interesting idea. I recall the early VWs (and Porsches) with the "reserve function". According to one Nissan engineer that I spoke with in 2011, the Leaf is designed to not charge above 80% nor discharge below 20%, which corresponds to the on on-board display's full and empty. (this corresponds with the guidelines of most Lithium manufacturers, and therefore makes a lot of sense, as a method to preserve the batteries). It has been my experience with electric vehicles that if you pull out of traffic and wait 20 minutes or so, that you can restart the vehicle and limp to an outlet somewhere. ( I have yet to need to do this with our Leaf, as the instrumentation has always erred on the side of more range rather than less. My home built projects never seemed to have the desired accuracy.
-Tom On Sat, Jan 19, 2013 at 3:21 AM, EVDL Administrator <[email protected]> wrote: > On 18 Jan 2013 at 21:32, Cal Frye wrote: > > > I wouldn't mind it if it worked like the really early Beetles - the > > range meter would reach zero at, say, 20% SOC, and you would have to > > physically throw a switch or something to discharge it any further. I > > would locate the "extended discharge switch" under the hood... > > My father had one of those VWs, a 1961, with no gas gauge and a reserve > lever on the firewall. I think something similar is an outstanding idea > for > an EV. It shouldn't be at all tough for a manufacturer to implement - > just > program it into the BMS. > > 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 > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -- Remember, it is not that the glass is half empty, in reality, the glass is merely twice the size that it needs to be! -TNT'82 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130119/5b133952/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
