Re: [EVDL] pouch cells
Dial it back just a bit. No need to be abusive. On 5/11/2015 7:59 PM, Michael Ross via EV wrote: You provided nothing that would help us answer your question. Not even the name of the reseller or manufacturer. What kind of inquiry is that? If you won't tell us, or show us, then there can be no real answer. "4000 cycles at %90 dod" This is a mostly meaningless specification. Taking lithium cells to 90% DOD does absolutely nothing bad to them. What might mess them up regarding DOD is if they were not consistent in their capacity and construction - so that they would not age well together for the life of the pack. What you want to know with certainty, is the voltage at 100% SOC (or somewhat lower for a factor of safety). And then the temperature beyond which the cells should not go when at a high SOC. You need to know the recommended high cutoff voltage that is sufficient to protect the cells regardless of temperature. You need to be sure your charger never pushes the cells beyond the max SOC%. If you do push voltage and SOC% higher you need to know the activation temperature of the system (positive electrode and electrolyte composition) and never let the pack exceed that temperature when the cells at at a high SOC%. What will the life of the cells be? Unless a thorough study using high precision coulometry has been performed, then you will mostly have no idea the expected life of the cells. Traditional testing tells you nothing much about the expected life. The old methods take far too long to give results and no one ever runs them long enough to get an estimate that is very certain. On Mon, May 11, 2015 at 9:00 PM, ken via EV wrote: I saw some pouch cells that claim 4000 cycles at %90 dod. any one tested theses. How are they for $ vs. power density. ___ 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) ___ 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)
Re: [EVDL] pouch cells
You provided nothing that would help us answer your question. Not even the name of the reseller or manufacturer. What kind of inquiry is that? If you won't tell us, or show us, then there can be no real answer. "4000 cycles at %90 dod" This is a mostly meaningless specification. Taking lithium cells to 90% DOD does absolutely nothing bad to them. What might mess them up regarding DOD is if they were not consistent in their capacity and construction - so that they would not age well together for the life of the pack. What you want to know with certainty, is the voltage at 100% SOC (or somewhat lower for a factor of safety). And then the temperature beyond which the cells should not go when at a high SOC. You need to know the recommended high cutoff voltage that is sufficient to protect the cells regardless of temperature. You need to be sure your charger never pushes the cells beyond the max SOC%. If you do push voltage and SOC% higher you need to know the activation temperature of the system (positive electrode and electrolyte composition) and never let the pack exceed that temperature when the cells at at a high SOC%. What will the life of the cells be? Unless a thorough study using high precision coulometry has been performed, then you will mostly have no idea the expected life of the cells. Traditional testing tells you nothing much about the expected life. The old methods take far too long to give results and no one ever runs them long enough to get an estimate that is very certain. On Mon, May 11, 2015 at 9:00 PM, ken via EV wrote: > I saw some pouch cells that claim 4000 cycles at %90 dod. > > any one tested theses. > > How are they for $ vs. power density. > > ___ > 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) > > -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison <http://www.brainyquote.com/quotes/quotes/t/thomasaed125362.html> A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-6737 Land (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Google Phone (919) 631-1451 Cell michael.e.r...@gmail.com -- next part -- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20150511/a1bbd41c/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)
Re: [EVDL] pouch cells
Got a link ? ( thanks ) On Mon, May 11, 2015 at 8:00 PM, ken via EV wrote: > I saw some pouch cells that claim 4000 cycles at %90 dod. > > any one tested theses. > > How are they for $ vs. power density. > > ___ > 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/20150511/d7844bf7/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)
[EVDL] pouch cells
I saw some pouch cells that claim 4000 cycles at %90 dod. any one tested theses. How are they for $ vs. power density. ___ 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)
[EVDL] EVLN: Tesla-3 to be unveiled in March 2016
'Ford is trying to kill sex' http://www.ibtimes.co.uk/tesla-model-3-elon-musks-bmw-3-series-rival-be-unveiled-march-1500106 Tesla Model 3: Elon Musk's BMW 3-Series rival to be unveiled in March By Alistair Charlton May 7, 2015 [image http://d.ibtimes.co.uk/en/full/1437386/tesla-model-3-render.jpg?w=736 Tesla Model 3 render A render by Auto Moto of what the smaller Tesla Model 3 might look like(Auto-Moto) http://d.ibtimes.co.uk/en/full/1437387/tesla-model-3-render.jpg?w=736 Tesla Model 3 render Render suggesting what the Tesla Model 3 might look like, based on the Model S and X(Auto-Moto) ] Tesla will unveil a new all-electric car to compete with the BMW 3-Series in March 2016, company boss Elon Musk has said. The car, to be called the Model 3, will be a smaller version of the company's successful Model S and Tesla is rumoured to be targeting a starting price of around $35,000 (£23,000), placing it in the firing line of entry-level saloon cars from BMW, Audi, Volkswagen and Ford. During a call with investors, Musk said: "We are hoping to show the Model 3 in March of next year," although admitted that this date is tentative and could change depending on how development of the car progresses. The chief executive added added that the car, which will have a range of 200 miles on one charge, will enter production in mid- to late-2017, adding: "Late 2017 is probably more realistic." After widespread success with the Model S - and the Model X, a taller SUV which will go on sale towards the end of this summer - the Model 3 will be Tesla's most important car to date. Where the Model S is a luxury saloon priced between £50,000 and £100,000, the Model 3 will bring the concept of a practical and refined all-electric car to the masses and at a price which is equal to petrol cars of a similar size and style. It will, assuming it sells in the high volumes expected of a £23,000 car, be the make-or-break point for Tesla's network of free Superchargers, which is gradually expanding across the US, UK, Europe and further afield to provide a way of quickly recharging for no cost and with the convenience of petrol stations. The company will need to install thousands more between now and late-2017 before anxiety - the fear of running out of electricity miles from a charger - is completely eradicated. 'Ford is trying to kill sex' The Model 3 is actually Tesla's fourth car after the Roadster, Model S and upcoming Model X, and was originally called the Model E, but Ford sued Musk's company, saying it wanted to use the name. As a compromise, the Model 3's name will be stylised as Model III. Musk told Auto Express earlier this year: "We had the model S for sedan and X for crossover SUV, then a friend asked what we were going to call the third car. So I said we had the model S and X, we might as well have the E...and then Ford sued us saying it wanted to use the Model E - I thought this is crazy, Ford's trying to kill sex." The Model 3 is expected to feature an all-new chassis, rather than borrow the platform shared by the similarly-sized Model S and Model X, and the new vehicle will be developed in part by Tesla's British engineering chief Chris Porritt, who used to work for Aston Martin. [© ibtimes.co.uk] ... http://www.ibtimes.co.uk/tesla-model-s-p85-review-car-future-already-here-1485808 Tesla Model S P85 review: The car of the future is already here http://www.theverge.com/2015/5/6/8562127/tesla-plans-to-unveil-its-35000-model-3-in-march-2016 Tesla plans to unveil its $35000 Model 3 in March 2016 Production will ramp up in "late 2017" By Chris Welch May 6, 2015 The Model 3, which will be 20 percent smaller than the Model S, is a crucial project for the company as it looks to make its own electric vehicles more affordable ... ... http://www.tweaktown.com/news/45006/tesla-unveil-model-3-vehicle-priced-35-000-march-2016/index.html Tesla will unveil Model 3 vehicle priced at $35000 in March 2016 By: Anthony Garreffa | May 7, 2015 Tesla has teased the availability of its upcoming Model 3, the more mainstream electric vehicle from the company, for release sometime in March 2016. ... http://www.slashgear.com/tesla-aiming-for-35k-model-3-unveiling-in-march-2016-09382803/ Tesla aiming for $35k Model 3 unveiling in March 2016 [May 9, 2015] While Tesla and its all-electric Model S seem to be getting lots of attention within the auto industry these days, the cars are not easily affordable, starting around ... ... http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_page&node=413529&query=subject%3Aevln+subject%3Atesla+-re&days=0&sort=date Read more Tesla EVLN items on evdl For EVLN posts use: http://evdl.org/evln/ http://247wallst.com/autos/2015/05/10/reserve-a-tesla-model-x-for-5000/ Reserve A Tesla-X For $5000 http://www.moneyweb.co.za/news/international/teslas-battery-grabbed-800m-in-its-first-week/ Tesla's giga-battery-factory grabbed $800m/1st-week> for EVs&Powerw
[EVDL] EVLN: Tesla Roadster 3.0 Longer Range Package Release In August
http://www.hybridcars.com/tesla-roadster-3-0-range-extending-package-to-be-released-in-august/ Tesla Roadster 3.0 Range Extending Package To Be Released In August by Sarah Shelton May 7, 2015 [images / Jonathan Alcorn/Bloomberg via Getty Images http://www.hybridcars.com/wp-content/uploads/2015/05/Tesla-roadster.jpg http://www.hybridcars.com/wp-content/uploads/2015/05/tesla-roadster-tweet.jpg Via Twitter http://www.hybridcars.com/wp-content/uploads/2014/12/Musk_tweet_roadster-upgrade.jpg Elon Musk first announced the Roadster 3.0 upgrade on December 26, 2014, via Twitter ] Last Christmas, Tesla gave Roadster owners an extra gift when CEO Elon Musk announced that an upgraded package will soon be available. Almost four months went by with no word, until one owner reached out to Musk for more details. Using his standard platform for news updates – Twitter – Musk said recently that the company now expects the Roadster 3.0 package to be on the market by late summer. Built exclusively for the Roadster, Tesla’s all-electric sports car produced between 2008 and 2012, the carmaker estimates that the upgrade will boost the Roadster’s range by as much as 50 percent. “There is a set of speeds and driving conditions where we can confidently drive the Roadster 3.0 over 400 miles,” Tesla said. Even though production on the coupe ended two years ago, Tesla said it wanted Roadster owners to be able to benefit from range improvements the company had developed since then. The new package will include both software and component improvements in three main areas: batteries, aerodynamics and rolling resistance: Battery: The original Roadster battery was the very first lithium ion battery put into production in any vehicle. It was state of the art in 2008, but cell technology has improved substantially since then. We have identified a new cell that has 31% more energy than the original Roadster cell. Using this new cell we have created a battery pack that delivers roughly 70kWh in the same package as the original battery Aerodynamics: The original Roadster had a drag coefficient (Cd) of 0.36. Using modern computational methods we expect to make a 15% improvement, dropping the total Cd down to 0.31 with a retrofit aero kit. Rolling Resistance: The original Roadster tires have a rolling resistance coefficient (Crr) of 11.0 kg/ton. New tires that we will use on the Roadster 3.0 have a Crr of roughly 8.9 kg/ton, about a 20% improvement. We are also making improvements in the wheel bearings and residual brake drag that further reduce overall rolling resistance of the car. Though Roadster owners now have a better idea of when they can pick up the upgraded package, the price is still unspecified. Experts are estimating that after trading in the Roadster’s old 50 kilowatt-hours battery, the 3.0 package will likely cost between $10,000 and $15,000. Even with the new battery, though, it doesn’t appear as though the Roadster will be able to use Tesla’s Superchargers. This network of rapid charging stations is currently only compatible with the Model S. [© hybridcars.com] ... http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/NamlServlet.jtp?macro=search_page&node=413529&query=subject%3Aevln+subject%3Atesla+-re&days=0&sort=date Read more Tesla EVLN items on evdl For EVLN posts use: http://evdl.org/evln/ http://247wallst.com/autos/2015/05/10/reserve-a-tesla-model-x-for-5000/ Reserve A Tesla-X For $5000 http://www.moneyweb.co.za/news/international/teslas-battery-grabbed-800m-in-its-first-week/ Tesla's giga-battery-factory grabbed $800m/1st-week> for EVs&Powerwall http://www.autoevolution.com/news/blacked-out-tesla-model-s-says-a-lot-about-how-the-ev-market-is-changing-95281.html Blacked Out Tesla-S Says a Lot about How the EV Market Is Changing http://www.theautochannel.com/news/2015/05/05/130612-robots-to-drive-polaris-ranger-darpa-robotics-challenge.html GEM nEVs @DARPA Robotics Challenge Finals 6/5-6 Fairplex, Pomona CA http://indefinitelywild.gizmodo.com/what-s-wrong-with-electric-bicycles-1702986234 Karmic Bikes' Koben promises to fix what ails the ebicycle industry http://www.sanluisobispo.com/2015/04/28/3608499/paso-robles-park-and-ride-lot.html 2 L2 EVSE @Paso Robles, CA park-and-ride lot + EVLN: Tesla-3 EV to be unveiled in March 2016 {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Tesla-Roadster-3-0-Longer-Range-Package-Release-In-August-tp4675453.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)
[EVDL] EVLN: VisibleTesla> free open source Tesla-S hack-app
http://www.techworm.net/2015/05/visibletesla-free-app-to-hack-tesla-model-s.html "VisibleTesla" free open source App to hack your 'Tesla Model S' By Maya Kamath on May 10, 2015 “VisibleTesla” an open source app created by Joe Pasqua helps ‘Tesla Model S’ owners to record the status of their vehicle’s systems along with scheduling automated commands. Tesla Motors’ Model S is an electric driven automated car. This car is a symbol of high-tech vehicle with Internet connectivity, a 17 inch touch screen display for control console, the car even sports its own Web browser and what more it even gets regular software updates. Though Tesla has not opened up to outside programmers however some enthusiastic owners are using the REST APIs (which is exposed by Tesla to write a neat interface) for creating new codes that collects the data from the car, on the other hand the codes can get the car to do some interesting, innovative things as well. One such enthusiast is Joe Pasqua, who is based in San Carlos, California. Pasqua has created a free open source app known as “VisibleTesla”. In a recent interview with the MIT Technology Review, Pasqua discussed the various functions that his new app “VisibleTesla” can carry out. This app can do wonders because it can help the owners not only in tracking the status of their vehicle’s systems but also to schedule automated commands as per their requirement. Visible Tesla would allow owners to unlock the doors, control the heater and air conditioners, control the charging function of the car, open the rooftop and also gather GPS information. This free source app is a software that runs on the PC; however by configuring it for Web access the Tesla Model S owners can access this app from the web browser which is available in the car. VisibleTesla functioning is similar to official Tesla iPhone and Android apps. Pasqua described one function in VisibleTesla app which is useful when a person visits grocery store because it seems the grocery stores in his area have stopped providing bags. In such a scenario VisibleTesla comes handy: “With VisibleTesla I can bring up a Google map, draw a circle around a certain area, and say, ‘Send me a text message anytime I go in that area, and here’s what I want it to say.’ So when I go to my grocery store parking lot, I get a text message that says, ‘remember your bags.’” Well, must say this is definitely a convenient and handy function. Due to such convenient functionality of the VisibleTesla app, it has already gathered a devoted online community wherein users share their data about their vehicles which helps other owners as well. For example, the community shares aggregate data as to how weather conditions affect the battery life. By using VisibleTesla app owners can even program their Model S to turn the heat at a specific time so that it is warm when users get in. Further, the app also has a feature to send text notifications to owners in case they forget put their cars on charging. Pasqua further mentioned in his interview that so far his app does not have any support from Tesla; however he also added that he has not encountered any resistance from Tesla yet. Tesla’s Model S can be controlled via internet and hence has an easy access to the programmers. It seems Edward Arthur, a semiconductor designer from southern Massachusetts, was able to write a simple code that would help him check if his battery was charging at a specific time and the program would send him a text notification in case he forgets to plug it for charging. Arthur is not using VisibleTesla and has found a method to tap into Model S over the internet. Tesla was suppose to release a software development kit for its Model S which has not been released yet; nor are there any details as to when this will be released. So till then owners of Model S can surely rely on innovative and creative VisibleTesla app. [© techworm.net] http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVent-Tesla-Plans-To-Open-EV-Doors-To-All-Hackers-8-6-9-Las-Vegas-NV-tp4675235.html EVent: Tesla Plans To Open EV Doors To All Hackers 8/6-9 Las Vegas NV Researchers from Chinese security, search and app store giant Qihoo 360 won. But that competition was not exactly Tesla-approved. Later this year, however, at the Defcon convention in Las Vegas, Tesla plans to open one of Elon Musk’s sleek electric cars to the hacker... May 01 2015 ... http://electric-vehicle-discussion-list.413529.n4.nabble.com/Evenchick-s-60-Open-Source-CAN-Hacking-Kit-tp4674630.html Evenchick's $60 Open-Source CAN Hacking Kit Former Tesla Intern Releases $60 Full Open Source Car Hacking Kit For The Masses Thomas Fox-Brewster 3/25/2015 [image http://blogs-images.forbes.com/thomasbrewster/files/2015/03/Screen-Shot-2015-03-24-at... Mar 30 2015 ... http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Don-t-try-to-hack-your-Tesla-S-Tesla-knows-when-you-do-tp4668858.html EVLN: Don’t try to hack your
[EVDL] centralsussex.ac.uk students ‘loved learning’ about electric cars
http://www.crawleyobserver.co.uk/news/local/students-loved-learning-about-electric-cars-1-6727914 Students ‘loved learning’ about electric cars 06 May 2015 [image http://www.crawleyobserver.co.uk/webimage/1.6727913.1430907690!/image/1756011464.jpg_gen/derivatives/landscape_620/1756011464.jpg SUS-150428-160330001 ] Students ‘loved learning’ about electric cars at a Crawley college’s careers event. Motorline Nissan showcased an electric car and van at Central Sussex College Crawley’s Futures Fair. Thérèse Wynn-Davies, innovation specialist at Motorline Nissan Crawley, said: “The students loved learning all about the Nissan LEAF and e-NV200 – they know that electric motoring is well and truly thriving today. “They were fascinated to learn how both vehicles can be charged up to 80 per cent in as little as 30 minutes and for such little cost. “For some it was their first introduction to electric vehicles. “Hopefully they will become the next generation of electric vehicle owners.” The vehicles were 100 per cent electric. A spokesman said they were market leaders in electric motoring. The annual Fair ran on April 22 and April 23. Representatives from universities, technology businesses, the voluntary and public sector and financial companies attended. The event’s town exhibitors included Crawley STEMfest, Motorline Nissan Crawley, St Catherine’s Hospice Crawley, and K2 Leisure Centre. Crawley STEMfest is an annual celebration of Science, Maths, Engineering and Mathematics in town. The festival sees events and talks aimed at inspiring young people in the subjects. [© crawleyobserver.co.uk] ... https://www.centralsussex.ac.uk/News-and-Events/Events/Futures-Fair-2015 Crawley Futures Fair 2015 - Central Sussex College For EVLN posts use: http://evdl.org/evln/ {brucedp.150m.com} -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/centralsussex-ac-uk-students-loved-learning-about-electric-cars-tp4675451.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)