Tesla has very good range estimation, so does https://abetterrouteplanner.com/ Both take into account the route, speeds and elevation changes. ABRP let’s you customize your preferred speeds and energy use. It also can be integrated with custom EV conversions using OVMS. Tesla has a predicted graph of SOC vs miles traveled on the route, and it does recalibrate in time if you drive fast, tow a trailer or hit cold weather and headwinds. Would be nice if it knew the weather ahead of time, but not yet it seems.
-Otmar, on mobile device. -Otmar, on mobile device. > On Dec 20, 2021, at 11:46 PM, Cor van de Water via EV <ev@lists.evdl.org> > wrote: > NOT straight forward. Humans are strange animals. > One moment I may be puttering along at 55 MPH on the freeway and > suddenly remember that I need to do something before an appointment > and start driving 80 which has my consumption doubled, so the range > estimation has to correct excessively. > Another time, after I drove 80 before charging, I may set out with a > full charge only indicating 70 miles range but now I am no longer in a > hurry and again putter along at 55MPH so after driving 20 miles I > arrive with an estimated range that is *higher* than when I left on > that trip... > The range estimation is really simply a guess as to what your car can > do for you if you continue with the same parameters as you were doing > in the recent past. > I am sure that some vehicle know how to fudge the differences between > sudden drive changes and instead adapt slower or faster, but there is > no point in an EV indicating a 100 mile range trying to maintain that > illusion while I start driving it hard, it simply needs to adapt to > the new consumption as soon as possible or I will get stranded when my > driving style consumes all battery charge within 50 miles but the car > only catches up slowly and keeps pretending that I still have most of > the 100 miles range estimation while I am burning through the charge > at double the rate... > BTW, the straight estimation based on only the recent (as in the last > few minutes) consumption is also the reason that some EVs lose 10 > miles of range estimation as soon as you set out and accelerate to > freeway speeds. You suddenly need to burn an extra amount of energy > that should have carried you an extra mile, so the increased > consumption at the beginning of your trip to achieve the needed > *kinetic* energy level (A.K.A. speed) is causing this drop in range > estimation. At the end of your trip, if you can anticipate and use > mostly regen braking, you get a large amount of this energy back and > your range estimation will increase again... > Cor. > > On Mon, Dec 20, 2021 at 9:13 PM Peri Hartman via EV <ev@lists.evdl.org> wrote: >> >> I'm wondering why none of the EVs seem to have good range estimation. I >> think there is a very simple solution to providing reasonably accurate >> range. Maybe some of the manufacturers are doing what I'm about to >> describe, but I've never seen any discussion of such. >> >> Obviously, if the car has no knowledge of where you are going, all it >> can do is use past behavior and throw out a number. I'm really not >> interested in a range estimate based on my average, I'm interested in an >> estimate for the trip I'm about to take. What if you were to tell it >> where you are going and what route ? Then, it would potentially know >> every hill and stop light. With your past driving behavior, it should be >> able to come up with a very close estimation of how many kWh that trip >> will take. >> >> Google maps has all that info. Maybe local wind info is available, too. >> I understand privacy issues, but most people already have google >> location turned on and have their cell phones with them while moving >> about. Google already knows everything. So, could the car's software >> incorporate google maps to get the info I mentioned above ? Seems like a >> straight forward technology. >> >> Peri >> >> << Annoyed by leaf blowers ? https://quietcleanseattle.org/ >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211221/30478580/attachment.html> >> _______________________________________________ >> Address messages to ev@lists.evdl.org >> No other addresses in TO and CC fields >> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >> ARCHIVE: http://www.evdl.org/archive/ >> LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20211221/554c9b16/attachment.html> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
