Earlier this year, there was a spate of news stories about the company "Hybrid Industries" who would install a second pack (up to 24kWh) in the trunk of your Leaf. I just did some quick searching, but I couldn't find out anyone who actually had the product installed, nor did their web site seem to give many details of how it worked.
Bill -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Cor van de Water via EV Sent: Monday, August 22, 2016 5:21 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, androgynous-design and no-delays This is straightforward but quite a kludge as the CHAdeMO is not a simple contactor and controller, but it is actually a power converter / battery charger. The Leaf actually does not care how much capacity the pack has, the pack has an integrated BMS that is quite stand-alone and there is a HV wire and a CAN bus running from car to pack, plus a few good old 12V contactor coil power signals, which connect directly to the coils of precharge, positive and negative contactors, that is it. So, parallel attaching of an extra pack (Leaf or otherwise) is not too difficult. Only thing I would question is if the Leaf is concerned about a difference in current between what the motor draws and what the BMS registers inside the pack. I have not tested if the Leaf actually cares about that. If not, it is simply a matter of splicing the contactor control signals and HV wiring and you can add a twin Leaf pack. I have two complete 2011 Leaf packs that will go into my US Electricar S10 truck, including the two Leaf BMS's so I can monitor all cells in both packs via the 2 CAN buses (I will use a "CANary" for that) 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 Bill Dennis via EV Sent: Monday, August 22, 2016 3:46 PM To: 'Lee Hart'; 'Electric Vehicle Discussion List' Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises,androgynous-design and no-delays How about this idea: install an extra pack in the trunk and or back seat as you say, but then attach the male end of a Chademo plug to it and do a little Arduino programming to emulate the supply side of the Chademo. Then when you need some extra range, pull over and do a quick charge from the extra pack. Maybe call it the "Leaflet" and market it even. :) Bill -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of Lee Hart via EV Sent: Monday, August 22, 2016 4:13 PM To: Peri Hartman; Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Chevrolet Bolt EV Early Adopter promises, androgynous-design and no-delays Peri Hartman via EV wrote: > 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. I have a 2013 Leaf, and have also been wondering if there's a practical way to increase its pack capacity and thus range. Rather than fit something into the same space as the present pack, I'm wondering if an add-on battery pack can be installed in the truck or back seat area. Perhaps as a stack of "suitcases" of manageable size and weight, so they can be loaded in by hand when the extra range is needed, and removed when they are not. The big unknown is how to add capacity in such a way that the Leaf's computers will accept and use it. -- A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away. -- Antoine de Saint Exupery -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com _______________________________________________ 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)
