On 22 Oct 2017 at 21:02, davinder via EV wrote: > I am puzzling over how regeneration in ev charges the main battery. > Plug in charging takes 8-10 hour charging to top up the battery - so > when the vehicle is rolling down hill oe deaccelerating the 'charge > energy' is avalable for seconds or minutes.
Regenerative braking doesn't fully charge the EV's battery. It would be great if it could -- drive for free! -- but it can't. You'll never recover 100% of the energy you used to put the vehicle in motion. That's physics for you. IIRC when you add regenerative braking, the typical increase in range (and hence energy recovery) is around 20%. I've read that in hilly regions you can get to 35%. To see this taken to an extreme, look here: http://www.evdl.org/pages/evergreen.html Over 20 years ago, Axel Krause of Brusa designed a light EV with efficient components and aggressive use of regen. He drove it over the Apls, and thanks to the regen, got essentially the same range he would have had if he'd driven on flat ground! 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)
