Peri, I hear you, I currently have a 2011 leaf with ~55 miles range (53 Ah which is nominally just over 19kWh left) because I sold its new warranty replacement 2015 pack with Lizard cells to my neighbor and installed it in their 2011 Leaf, while I installed a used pack into my car. For 200 miles range, it does not need 200kWh since it is possible to get about 225Wh/mi in the Leaf in mixed driving, so about 45 kWh of usable capacity is needed for that range, meaning a pack of at least 52 kWh with 15% unused capacity. Still, that is roughly twice the capacity of current Leaf packs, so it must have a different form factor than current packs as I do not know of a technology to pack twice the energy in the same volume as the current Leaf pack.
Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info http://www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Peri Hartman via EV Sent: Monday, August 22, 2016 1:30 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, androgynous-design and no-delays Thanks for your detailed answer, Cor. I can't really justify increasing from 24kwh to 30, so it's unlikely I'll pursue that. 200kwh would make a substantial difference, though. I could get rid of my other vehicle. We'll just have to see what happens over the next couple years, though I agree, I don't think battery tech has advanced enough to fit it in the same space. Peri ------ Original Message ------ From: "Cor van de Water via EV" <[email protected]> To: "Electric Vehicle Discussion List" <[email protected]> Sent: 22-Aug-16 1:24:08 PM Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, androgynous-design and no-delays >Peri, >Unlikely. >While battery technology has been progressing quickly and we have seen >the Model S go through a series of incremental upgrades where the kWh >rating went up in 5 kWh steps for the same size of battery, it is >unlikely that Nisan will be able to shoe-horn more than twice the >current capacity into the same space under the vehicle and keep it >compatible. >The 2016 Leaf can be had with a 30kWh pack instead of 24 so that is a >possibility to get a new and incrementally better pack. >I suspect that Nissan will not provide the 30kWh pack with the same >connector as the 2011 Leaf has, but knowing the pin-out (it is the same >signals on different pins, we already saw this change going from the >2011/2012 Leaf to the 2013+ where the control connector changed from >4-row to a 6-row connector but has identical signals, so it would be >trivial to splice on a new connector and plug (send me a message if you >want to do this, I have a connector and the pack feed-through from a >2011 that you can splice onto the 2013+ wiring to allow it to work in a >2011 Leaf) >Only you will need to convince a Nissan Dealer to help you to pair your >new pack to your car in the Nissan service system so it generates a key >that needs to be entered on your car to accept the new pack, else you >can only drive around at 25 MPH. >There is one other option to get the 30kWh pack to work in a 2011 Leaf, >but I would have to see the internals of the new pack (number of cells >and layout) to be able to tell if it would be possible to use the old >BMS on the new pack, which would avoid contacting the Nissan service, >only the old BMS will need to learn that it has higher capacity cells >to >better estimate range, even though it will work and balance like normal >on the old pack. >Learning new capacity takes more than a month of daily driving in my >experience. > >As I said, this is to get the 30kWh battery into the 2011 Leaf. I >highly >doubt the 200 mile Leaf will have the same space for its battery, it is >likely that the car itself will be re-designed to create more space for >the pack so it will by definition not be compatible. > >Cor van de Water >Chief Scientist >Proxim Wireless > >office +1 408 383 7626 Skype: cor_van_de_water >XoIP +31 87 784 1130 private: cvandewater.info > >http://www.proxim.com > >This email message (including any attachments) contains confidential >and >proprietary information of Proxim Wireless Corporation. If you >received >this message in error, please delete it and notify the sender. Any >unauthorized use, disclosure, distribution, or copying of any part of >this message is prohibited. > > >-----Original Message----- >From: EV [mailto:[email protected]] On Behalf Of Peri Hartman >via EV >Sent: Monday, August 22, 2016 10:38 AM >To: Ed Blackmond; Electric Vehicle Discussion List >Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, >androgynous-design and no-delays > >When Nissan comes out with their 200 mile battery, does anyone know if >it will be possible to upgrade a 2011 leaf with that battery? > >Peri > >------ Original Message ------ >From: "Ed Blackmond via EV" <[email protected]> >To: "Electric Vehicle Discussion List" <[email protected]> >Sent: 22-Aug-16 9:36:25 AM >Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, >androgynous-design and no-delays > >> >>> On Aug 22, 2016, at 4:19 AM, EVDL Administrator via EV >>><[email protected]> wrote: >>> >>> For all that, I have to admit, it has promising specs. It's just >>>that I >>> still can't get past GM's EV history. >>> >>That worries me a bit too, but they are going to be available for >>purchase. The EV1 was not. >> >>I'm planning to replace my 2011 Leaf with a Bolt as soon as they >>become > >>available. If I can get 150 miles driving the way I drive, I will >>never > >>have to rent an ICE car again. >> >>The range of my Leaf is now down to about 55. The most I ever got was >>81. Ever since buying the Leaf, there were things I decided not to do >>because I would have to rent a car to do them. I don't think that will >>be the case with the Bolt. >> >>Ed >>_______________________________________________ >>UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >>http://lists.evdl.org/listinfo.cgi/ev-evdl.org >>Read EVAngel's EV News at http://evdl.org/evln/ >>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 >Read EVAngel's EV News at http://evdl.org/evln/ >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 >Read EVAngel's EV News at http://evdl.org/evln/ >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 Read EVAngel's EV News at http://evdl.org/evln/ 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 Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
