Even the battery in my prius hybrid regens pretty well -- not as well as a BEV, but not bad. But... it fills up really quickly (like in 4 or 5 miles of downhill) and then it's full.... so it's not the power that's limiting it, but the energy.
Z On Thu, Nov 14, 2013 at 8:41 AM, Willie2 <[email protected]> wrote: > On 11/13/2013 11:25 AM, EVDL Administrator wrote: > >> On 13 Nov 2013 at 3:33, brucedp5 wrote: >> >> Conventional batteries take so long to charge that they cannot >>> efficiently >>> store braking energy. >>> >> Hold on there! A lead-acid battery can be charged at thousands of amps if >> it's below 80% SOC. >> >> To view it from another angle, a battery can usually charge as fast as it >> can discharge. I'm sure there are exceptions, but in my experience, most >> drivers seldom decelerate dramatically faster than they accelerate. >> >> That said, supercaps have been shown to be useful in mitigating peak >> currents on discharging, and maybe this would help too on charging. But I >> suspect that further battery refinement - and the extra cost of the caps - >> will make this a moot point. >> > > I also noticed the poor quality of the article also and intended to > comment on it at the time. > > I guess he is thinking of not BEVs but hybrids with relatively small > batteries. > > As far as I know, ALL BEVs with regen capture an acceptable amount of > braking energy. A Tesla S (warm with a not full battery) can regen at > 60kw; that covers probably more than 90% of braking needs. I have no > personal experience, but I suspect even the small battery in a Volt allows > an acceptable job of regen. > > >> > _______________________________________________ > 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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20131114/26808eec/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)
