http://www.torquenews.com/2250/battery-prices-fall-greater-range-or-lower-cost-more-important-evs As EV battery prices fall, is greater range or lower cost more important? By Luke Ottaway 2014-08-20
[image] Tesla EV A new study brings an old topic back to the forefront: how much range is enough, and is it better to use battery advancements to decrease price without improving range or make electric vehicles go further on a charge? The cost of lithium-ion batteries has fallen significantly in a short time and will continue to drop as the market for advanced electric vehicle batteries grows. The improvements pose a critical question to automakers: how much range is enough? About what we have now, according to a recent study. A researcher for the Oak Ridge National Laboratory, Zhenhong Lin, concluded as much in his paper Optimizing and Diversifying Electric Vehicle Driving Range for US Drivers, published in Transportation Science (via Charged EVs). What the study found The study closely examined 36,664 sample drivers for things like driving habits and charging infrastructure availability, concluding that for most people the current status quo of sub-100 mile range is adequate. Lin proposed a way to optimize desired driving range by converting range limitation to a ‘cost’ to measure range anxiety and minimizing the sum of battery, electricity, and range limitation costs. “The quantitative results strongly suggest that ranges of less than 100 miles are likely to be more popular in the BEV market for a long period of time,” according to the author. As long as battery pack costs remain above $100/kWh, which will be the case for a while, it mathematically makes the most sense to drive down vehicle costs through battery cost reductions rather than use those advancements to improve range. Why we disagree No study is perfect, and this one is no exception. Whether or not a sub-100 mile range is actually feasible for these (or any) drivers, what matters is that the driver thinks it is feasible. Perception trumps reality when it comes to range anxiety, at least for the time being. Though there is certainly a place for electric vehicles like the Nissan LEAF and its current 84-mile range, psychological barriers and the need for longer trips means that electric vehicles must diversify their offerings to include longer-range options. [© torquenews.com] ... http://www.businessinsider.com.au/elon-musk-may-use-wonder-material-graphene-to-push-teslas-cars-to-an-800km-range-2014-8 Elon Musk May Use 'Wonder Material' Graphene To Push Tesla's Cars To An 800km Range Dave Smith [20140825] ... http://cleantechnica.com/2014/08/25/500-mile-tesla-graphene-battery/ 500-Mile Tesla Graphene Battery? August 25th, 2014 For all EVLN posts use: http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_page&node=413529&query=evln&sort=date http://www.pv-magazine.com/news/details/beitrag/lithium-batteries-leading-electrochemical-energy-storage-technologies_100016157/ Lithium batteries leading electrochemical energy storage technologies http://ecomento.com/2014/08/27/german-ev-owners-revolt-against-alarming-tesla-group-test/ German range comparison test findings upset EV owners> deemed harsh http://www.prnewswire.com/news-releases/telefonix-l1-powerpost-electric-vehicle-charging-station-compatibility-confirmed-by-nissan-271377081.html Telefonix l1powerpost.com EVSE Compatibility Confirmed by Nissan + EVLN: Startup sakti3.com sez 480mi EVs doable> aims for $100/kWh packs {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-As-EV-battery-prices-fall-More-range-or-lower-100mi-EV-cost-tp4671229.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ 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)
