Technology Review - Published By MIT
Log in to My.TechnologyReview.com | Register
Advertisement
« Back 1 [2]

Monday, August 13, 2007

Novel Batteries Get a Boost

Continued from page 1

By Kevin Bullis

smaller text tool iconmedium text tool iconlarger text tool icon


But the battery requirements for the Volt are much more challenging, requiring the different cell design. Whereas in the Vue power from the battery will be supplemented with power from a gasoline engine, the Volt will rely on batteries full-time. For the first 40 miles of driving, the battery will deliver power from being plugged in overnight. After that, the battery will continue to power the vehicle as it is recharged by an on-board gasoline-powered generator.

The new batteries must pack more energy into a smaller space, the reason for the flat design. But they also need to be fine-tuned for the power demands of the Volt. To do this, engineers can subtly alter the electrode chemistry, thickness, the type of electrolyte, and other aspects of the battery cell design. The collaboration with GM will give A123 direct access to more lab space and testing equipment that could allow A123 to more quickly sort through many subtle variations on the cell design, says David Vieau, A123's CEO. "You never get enough test capacity for all of the different variations you'd like to be able to consider," says Vieau. "We hope this [agreement] will accelerate the process."

Gray says GM hopes to have the batteries in packs within the next couple of months and to have these packs in a generic vehicle platform for testing by the end of the year. The technology could be in a prototype Volt sometime next spring, she says. GM's goal of a production model by 2010 or 2011, Gray says, is an "aggressive target." But the tests they've done so far since announcing the project in January have been encouraging. "We've got no information back that says uh-oh we can't do this," Gray says.

The Volt is going to be about the size of a Chevrolet Cobalt, which currently costs between $14,000 and $20,000 depending on the configuration. Rob Peterson, a GM spokesperson, says GM won't "price themselves out of that class" of vehicles with the Volt. He adds that if GM intended the vehicle to have a hefty premium, it would have made the vehicle a Cadillac. "It was a conscious decision to make it a Chevy," he says.

The agreement with GM does not mean that A123 will be locked out of doing work with other automakers. The specific cell the two companies develop together will be co-owned--so both companies will have to negotiate for how it might be used, Gray says. That could include putting the pack in cars by other companies, Gray says, since "it's in everyone's interest to achieve economies of scale to drive down battery prices." A123 still retains control over its novel battery chemistry, however. Indeed A123 has had discussions with other automakers and its batteries are set to be used in hybrid buses starting in 2008.

« Back 1 [2]

Comments

  • batteries swap
    Jochen on 08/13/2007 at 3:24 AM
    Posts:
    2
    Thinking about recharging: why not to swap the batteries ? Buying car without batteries and lease them charged at petrol stations. When close to empty swap for a charged one. Charging on night power surplus. The key point: technical arrangement that enables to remove/insert the battery pack (300 kgs or more) within an instant (F1 tyres exchange takes typically 8 seconds, what about a minute here ?)
    Rate this comment: 12345
    • Re: batteries swap
      tsaidak on 08/13/2007 at 8:43 AM
      Posts:
      4
      Just to be picky.... at 200 watts per mile (Prius needs 117) the 40 mile pack would weigh 103 lbs.
      Why would I want to swap out packs at a 40 mile range when I could recharge at home or at work in undere 5 hrs using a 110v line?  Also, swapping out the packs would be labor intensive compared to pumping gasoline, and actually drive up the cost per mile quite a bit.
      Rate this comment: 12345
      • Re: batteries swap
        jpdemers on 08/13/2007 at 11:57 AM
        Posts:
        29
        Avg Rating:
        4/5
        How many fill-ups does your average station handle in a day?  Quadruple that, given the 40-mile range. I doubt service stations are capable of storing a thousand or so 100-lb battery packs, let alone handling the massive electrical load involved in recharging them all.  And trucking in 100,000 lbs of anything on a daily basis is out of the question. 
        An interesting option, if the battery pack indeed weighs only 100 lb, would be to double up the batteries.  Increasing the range, while adding less than the weight of an adult passenger, might be worth the added expense to many potential customers.
        Rate this comment: 12345
    • battery swap? >>> yes, just read my "cellphoneCAR" article >>>
      Gaetano Marano on 08/14/2007 at 11:39 AM
      Posts:
      55
      Avg Rating:
      2/5
      .

      I agree with the "battery swap" since already suggested in my July 23, 2007 "cellphoneCAR" article:

      http://www.gaetanomarano.it/articles/033cellphoneCAR.html

      and also posted comment in this Technology Review article:

      http://www.technologyreview.com/Biztech/19085/

      it's a great idea to solve the main electric cars' problem: the (4+ hours) too long
      recharge time

      .
      Rate this comment: 12345
  • FLAT BATTS...
    advill on 08/13/2007 at 5:37 AM
    Posts:
    11
    Avg Rating:
    1/5

    Are already in production with Valence, the SAPHION Li-Ph. line has standard lead-acid sizes.

    I don“t know how this A123 people is going to avoid the 200 patents Valence has in the process...
    Rate this comment: 12345
    • Re: FLAT BATTS...
      asdar on 08/13/2007 at 9:49 AM
      Posts:
      60
      Avg Rating:
      5/5
      There's a million ways around shape patents, mostly because they're not a breakthrough. I have a flashlight with a square battery that's 20 years old.
      Rate this comment: 12345
      • Re: FLAT BATTS...
        advill on 08/14/2007 at 9:12 AM
        Posts:
        11
        Avg Rating:
        1/5
        Well , i saw much hype of A123, but they have a product that is 5 years behind in relation with Valence this people have some basic research patents related to runaway process which seems no to easy to "go around"...will see.
        Rate this comment: 12345
  • GM Tying up A123?
    asdar on 08/13/2007 at 9:54 AM
    Posts:
    60
    Avg Rating:
    5/5
    This paragraph made me sigh with relief, then grimace wondering if it meant something worse.

    Quote:
    "The agreement with GM does not mean that A123 will be locked out of doing work with other automakers. The specific cell the two companies develop together will be co-owned--so both companies will have to negotiate for how it might be used, Gray says. That could include putting the pack in cars by other companies, Gray says, since "it's in everyone's interest to achieve economies of scale to drive down battery prices." A123 still retains control over its novel battery chemistry, however. Indeed A123 has had discussions with other automakers and its batteries are set to be used in hybrid buses starting in 2008."
    End Quote:

    First off it says that A123 is free to deal with who they want, but then comes the line that makes me nervous.

    "The specific cell the two companies develop together will be co-owned--so both companies will have to negotiate for how it might be used, Gray says."

    Negotiation rights sounds an awful lot like control to me.

    I don't mind the idea of GM owning the tech, if they use it. I'm getting NiMh flashbacks from that line.

    I hope that the Volt, and A123 are on the road soon.
    Rate this comment: 12345
  • battery ownership
    cripdyke on 08/13/2007 at 4:54 PM
    Posts:
    9
    Avg Rating:
    3/5
    yes, chev volt battery will be co-owned, but a123 can always create a battery w/ different voltage and storage capacity, or even different storage cap and shape but the same voltage. A123 owns the battery tech, but chev would co-own that particular battery. Just because RCA co-owns the energizer C Cell doesn't mean that energizer can no longer sell batteries w/o RCA's permission.
    Rate this comment: 12345
    • Re: battery ownership
      EHL68 on 08/20/2007 at 2:59 AM
      Posts:
      1
      Fortunately, the article also mentions the many elements being customized for the Volt. 
      Quote--
      "...electrode chemistry, thickness, the type of electrolyte, and other aspects of the battery cell design..."
      --End Quote

      In truth though, it will likely come down to which side can produce documents on key  developments toward the final product, and which side has the better patent lawyers!

      Good luck, A123!  And to GM--I'm truly looking forward to a Volt as my next car, should it arrive at the 2010 or -11 model year!
      Rate this comment: 12345
Advertisement
Advertisement

Current Issue

Technology Review July/August 2008
The Business of Social Networks
The future of the Web is social. But can social-networking sites ever make money?
•  Subscribe
Save 41%
•  Table of Contents
•  MIT News

Magazine Services

Career Resources

MIT Technology Insider

Stories and breaking news from inside MIT about the latest research, innovations, and startups--in a convenient monthly e-newsletter. Subscribe today
Advertisement

More Technology News from Forbes

Advertisement
Advertisement
Advertisement
TECHNOLOGY RESOURCES
Advertisement
MIT Massachusetts Institute of Technology