Page 88 of 523 FirstFirst ... 387884858687888990919298138188 ... LastLast
Results 871 to 880 of 5221

Thread: Tesla Supercharger network

  1. #871
    Model S P-2540 EdA's Avatar
    Join Date
    Mar 2011
    Location
    Massachusetts
    Posts
    1,032
    A few supercharging comments...

    1.) Regarding Boston to NY (or points further south): I never drive on Rt. 95 when going to NYC - kill me before I take the Cross Bronx Expressway again. I will take whatever route is going to be the least busy be it 84-684-Hutchinson River Pkt or the Merritt...but NEVER EVER 95. Texans, sorry to be so parochial.

    2.) Let's say there's a charging station outside of "Springfield" and I happen to live a few miles from "Springfield". What's to stop me from ever charging at home and always using (clogging up) the SuperCharger? Is Tesla going to enforce some kind of limits to keep locals off of the SuperChargers? I know when I'm on my road trip, a half and hour of SuperCharging is going to be more than I want to stop.

    I can see myself doing Boston<->Philly a bunch of the next N-years while my daughter is in college...

  2. #872
    Model S VIN P01536 Robert.Boston's Avatar
    Join Date
    Oct 2011
    Location
    Portland, Maine, USA
    Posts
    5,567
    Good points, @EdA . I almost always use I-84/I-684 so an SC near Danbury cT would be really good. The Milford SC could be helpful visiting my daughter in New Haven. Also a good choice for New Yorkers traveling to Cape Cod.

    However, given that there will be an SC in Milford, I expect that I'll detour there to top up even en route to NYC.

  3. #873
    Roadster#433, Model S#S37 Cottonwood's Avatar
    Join Date
    Feb 2009
    Location
    Colorado
    Posts
    2,048
    Quote Originally Posted by Robert.Boston View Post
    However, given that there will be an SC in Milford, I expect that I'll detour there to top up even en route to NYC.
    I have a friend in Newton, MA with several properties on Fire Island. The Newton, MA to Bay Shore, NY drive that he does MANY times a year was a stretch even with the 85 kWh battery. Now, with the Milford Supercharger, its a no-brainer. He is now seriously considering a Model S.

    Superchargers may be what ultimately make Tesla a success.

  4. #874
    Model S Perf Sig 1232 Larry Chanin's Avatar
    Join Date
    Aug 2011
    Location
    Sarasota, Florida
    Posts
    2,694
    Quote Originally Posted by Cottonwood View Post
    The only thing unwise about charging in Range mode at a Supercharger is that the charging just slows down to a normal charge rate at the end to protect the battery. Its not unwise in terms of battery life, but it is very unwise in terms of time to charge when on a trip.
    You make an excellent practical point. However, I received the following response from Tesla engineering following an inquiry that I made:

    "Charging in Max Range mode regularly will indeed accelerate battery degradation. Degradation mostly occurs at the upper end of the battery when it’s at very high voltage. Range mode is there for a reason – to give you max range – and customers should feel free to use it when it makes sense. We recommend using Standard mode for most daily driving."

    I agree that the Supercharger has a level of sophistication in communicating with Supercharger enabled batteries that is probably greater than conventional universal chargers. Nevertheless, beyond the practical advice that Supercharger fast charging probably ceases to be fast when fully charging in Range mode, I believe there probably is an added increment in battery degradation by Supercharging in Range mode. Put another way, if charging in Range mode degrades the battery at much lower capacities, it is not unreasonable to expect that charging at very high capacity, at higher heat loads, would probably be incrementally more damaging.

    Larry

  5. #875
    EU Model S P-37 VolkerP's Avatar
    Join Date
    Jul 2011
    Location
    Germany
    Posts
    2,339
    Larry,

    I think the "damage" to the battery when charging beyond 90% SoC is mainly determined by charging power and cell temperature. The superchargers begin to cut back from 90kW as early as 50% SoC. When range charging above 90% SoC with a super charger, I expect the charge power to fall below 20kW, the equivalent of AC charging with twin chargers. So that should not differ from level 2 (AC) charging.

    Heat load should be reduced when supercharging above 90% SoC, since Model S can redirect cooling power from the 10kW onboard chargers to the battery. Outside temperatures might play in here.

  6. #876
    Member
    Join Date
    Aug 2012
    Location
    Oslo, Norway
    Posts
    202
    Quote Originally Posted by EdA View Post
    2.) Let's say there's a charging station outside of "Springfield" and I happen to live a few miles from "Springfield". What's to stop me from ever charging at home and always using (clogging up) the SuperCharger?
    We discussed that in a norwegian EV forum recently. The conclusion was that power is so cheap noone here would detour and wait around at the Supercharger just to save a few bucks.
    And even though Tesla claims supercharging will not affect the battery, I would not risk any degradation from extensive supercharger use. Saving a few dollars at the risk of accelerated degradation and wasting time hanging around a charger is a no-brainer to me.

    You don`t buy a $70-90,000 car and cheap out on charging.....

  7. #877
    Senior Member JRP3's Avatar
    Join Date
    Aug 2007
    Location
    Central New York
    Posts
    6,600
    Quote Originally Posted by Larry Chanin View Post
    Put another way, if charging in Range mode degrades the battery at much lower capacities, it is not unreasonable to expect that charging at very high capacity, at higher heat loads, would probably be incrementally more damaging.

    Larry
    I disagree. The supercharger will have to reduce current at higher SOC's to the same range as any other charger, and the pack TMS will be keeping pack temperatures in line well before the higher SOC is reached. By the time your are into the final 10% or so of a range mode charge on a supercharger I don't think the battery will be experiencing anything different than a range mode charge from an onboard charger.

  8. #878
    Junior Member wayno's Avatar
    Join Date
    Jul 2011
    Posts
    15
    Quote Originally Posted by Robert.Boston View Post
    So, here's my speculation (posted in another thread):

    Milford: the Westfield Connecticut Post Mall. Sits on I-95, ample parking, stores, dining.

    Wilmington: the Christiana Mall. Sits at a critical point on I-95, just south of the NJ Turnpike split and just north of the DE-1 connection, leading down to the Delaware coast. High end mall, Apple store, same owner as the Natick Mall (home of the Tesla Boston store).
    .
    I couldn't agree more on the Christiana Mall location. I went over there last week to scout out locations, and came up empty handed though. Even again tonight having Dinner at the mall, I couldn't find any signs of a supercharger construction area. I also checked out the I-95 rest area in DE as the next logical location and came up empty there as well. I would imagine that in order for it to be operational within a month there would need to be some sign of construction at this point. I will keep looking though until I hear an announcement.

    Thanks,
    Wayne

  9. #879
    Senior Member hcsharp's Avatar
    Join Date
    Jun 2011
    Location
    Vermont
    Posts
    1,491
    Quote Originally Posted by JRP3 View Post
    I disagree. The supercharger will have to reduce current at higher SOC's to the same range as any other charger, and the pack TMS will be keeping pack temperatures in line well before the higher SOC is reached. By the time your are into the final 10% or so of a range mode charge on a supercharger I don't think the battery will be experiencing anything different than a range mode charge from an onboard charger.
    I think you're right JRP3. Unless there's something we don't know, you can't apply much more than 4.2v to a Li-ion cell while charging it. That doesn't leave enough voltage differential to apply more charging power regardless of method. That's why it starts cutting the rate down fairly early when Supercharging.

  10. #880
    Senior Member JRP3's Avatar
    Join Date
    Aug 2007
    Location
    Central New York
    Posts
    6,600
    Yes you have to keep voltage below the electrolyte solvent breakdown voltage so current has to be reduced. EPhase: Battery Electrolyte Breakdown Voltage
    It's like filling a bucket with a hose, when the bucket is empty you can use high pressure and not spill anything, but as it nears full you need to lower the pressure if you want to fill it all the way.

Thread Information

Users Browsing this Thread

There are currently 7 users browsing this thread. (3 members and 4 guests)

  1. hileyms,
  2. republic,
  3. hans

Similar Threads

  1. Suggested Tesla Supercharger locations in Florida
    By Larry Chanin in forum Florida
    Replies: 166
    Last Post: 2014-07-27, 07:49 PM
  2. Replies: 86
    Last Post: 2014-04-24, 07:25 PM
  3. "Supercharger" plans for Germany (Current HPC network)
    By TEG in forum Netherlands, Belgium, Germany, Austria, Switzerland
    Replies: 34
    Last Post: 2013-10-24, 01:33 PM
  4. Supercharger Event 2012/9/24
    By iridium in forum News
    Replies: 168
    Last Post: 2013-10-13, 11:53 AM
  5. Replies: 29
    Last Post: 2013-02-25, 08:52 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •