Battery cooling, and packaging. I do not like the battery configurations many of the Mass Produced units are designed with. My idealized pack is in two battery boxes , one is between the front wheels giving the understeering handling we are used to.(The car tends go straight) And the second is in front of the rear axle to minimize drifting or skidding on slick surfaces. (Extra weight gives more traction.) The cooling to be accomplished with several cold plates between the cells (Like the noodles in lasagna.) With hoses (Or tubing) connecting to a simple radiator for cooling the non-flammable coolant circulated by a electric pump which can be switched off in cold weather. Put the radiator in the front like an ICE unit or under the cabin floor if a Grill is not in your styling scheme. Put the electric motor(s) in the location used by ICE transmissions. In the winter you can pre-warm the battery cells by use of an aftermarket ICE engine block heater immersed in the coolant below the packs (Warm liquid rises)during charging and while parked at other times on cold days to keep them warm (Usually outlets are provided in colder climates.)
Dennis Lee Miles (*[email protected] <[email protected]>)* * Founder: **EV Tech. Institute Inc.* *Phone #* *(863) 944-9913 (12 noon to 12 midnight Eastern US Time)* *Educating yourself, does not mean you were **stupid; it means, you are intelligent enough, **to know, that there is plenty left to learn!* * You Tube Video link: http://youtu.be/T-FVjMRVLss <http://youtu.be/T-FVjMRVLss> * On Mon, Aug 4, 2014 at 10:02 PM, Ben Goren via EV <[email protected]> wrote: > On Aug 2, 2014, at 6:10 PM, Lee Hart <[email protected]> wrote: > > > Since you live in AZ, why not an evaporative "swamp cooler"? They work > pretty well in low humidity environments. > > Sadly, about half the hot season is humid enough for evaporative coolers > to be ineffective. Some people have both systems in their homes, because > they can save a few pennies that way...but, mot many, and mostly just those > who initially had just a swamp cooler before upgrading to an heat pump. > > > A compressor *is* a heat pump. > > I think my confusion comes from the heat pump only being used for > cooling...the heat pumps I'm familiar with all have as a selling point > their efficiency at heating as well as cooling. > > > If the batteries are in an insulated box, they won't need much cooling > to keep them at a reasonable temperature. There are small "chiller" units, > intended for water coolers and vending machines that could do it. > > I think I first need to figure out just where I'm going to put the > batteries before deciding how to cool them. A lot is going to depend on > weight distribution...I know that's something critical, and I don't want to > make the car back-heavy, front-heavy, top-heavy, or whatever. I can see > various possibilities, from a single box near the rear axle to four boxes > near each wheel to a single layer under the cabin to... > > ...and each would suggest a different approach to cooling.... > > b& > _______________________________________________ > 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/20140804/9174e01f/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)
