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View Diary: The state of lithium (180 comments)

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  •  Electric vehicles have one good thing going for (3+ / 0-)

    them:

    If you hook up a battery pack with the right electrical characteristics, they'll run.  Doesn't matter what's inside that pack, the car will run.

    Of course, different batteries last longer, weigh less, etc than others, but changes in the battery don't have to mean reengineering the car.

    Free speech? Yeah, I've heard of that. Have you?

    by dinotrac on Sun Jun 13, 2010 at 10:16:38 AM PDT

    [ Parent ]

    •  Power density & weight are importiant (3+ / 0-)
      Recommended by:
      JeffW, dinotrac, ItsSimpleSimon

      And the architecture of battery stacks, and coversion systems needed for different battery technologies can be quite diferent. Of particulr importance is charge process. It will not be as simple as awapping batteries when new technology is available.

      It's acually not as simple as it seems.

      "Life immitates art, but takes license." - ko

      by koNko on Sun Jun 13, 2010 at 10:52:32 AM PDT

      [ Parent ]

      •  Sure they are, but riddle me this, Batman: (1+ / 0-)
        Recommended by:
        koNko

        In a world with these nifty people we call engineers, can you imagine that somebody specifically looking to engineer a replacement for a battery pack of one technology with another could provide a servicable substitute?

        I'm not saying that you could replace lithium batteries with a lead-acid battery pack and get the same performance, but you could get the car to run.  I would also bet those canny engineers could get it to work with the original charger with a little bit of electronic wizardry.

        Smart people, those engineers.

        Free speech? Yeah, I've heard of that. Have you?

        by dinotrac on Sun Jun 13, 2010 at 02:24:12 PM PDT

        [ Parent ]

        •  In some cases yes. (0+ / 0-)

          But the discharge control circuitry is generally engineered for specific types because the charge/discharge processes are different, to at the level of the car it is not so simple.

          What can and is being standardized is the voltage of recharge stations, but even there, some very quick charge batteries may benifit from talored solutions.

          BTW, the modus operendi of engineering is ..

          solve problem/make problem, rinse, repeat.

          "Life immitates art, but takes license." - ko

          by koNko on Sun Jun 13, 2010 at 10:32:00 PM PDT

          [ Parent ]

    •  changes in the battery do incur reengineering (2+ / 0-)
      Recommended by:
      dinotrac, erush1345

      charger technology, power controls other sub-components will have different characteristics.

      Perhaps the changes are not major - as for instance is the case in going from Gasoline to Diesel, but they are real.

      I do agree with your general point - the use of the core "fuel" from the grid is not materially altered.

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