1. Attachments are working again! Check out this thread for more details and to report any other bugs.

IndieGoGo Project Promises to Charge cell phone or electric car battery in minutes

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by jsfabb, Feb 13, 2013.

  1. jsfabb

    jsfabb Active Member

    Joined:
    Aug 2, 2010
    617
    156
    0
    Location:
    Medford, NY
    Vehicle:
    2012 Prius
    Model:
    Three
  2. John H

    John H Senior Member

    Joined:
    Jun 4, 2012
    2,208
    557
    0
    Vehicle:
    2007 Prius
    Model:
    N/A
    Hmm... I already have a Rayovac 15 minute fast charger. Not sure what the breakthrough here is.
     
    Blu-ray likes this.
  3. jsfabb

    jsfabb Active Member

    Joined:
    Aug 2, 2010
    617
    156
    0
    Location:
    Medford, NY
    Vehicle:
    2012 Prius
    Model:
    Three
    For your car? :sneaky:
     
  4. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    As is always the issue with large batteries, the problem is having the energy available to put into them. The new generation lithium batteries can be charged very quickly, but putting 20KwH into a battery in 16 minutes will take an 80KwH supply. That is about 350 amps at 230 volts....not something you can do at home.
     
    John Hatchett likes this.
  5. John H

    John H Senior Member

    Joined:
    Jun 4, 2012
    2,208
    557
    0
    Vehicle:
    2007 Prius
    Model:
    N/A
    ok, just some math ... 12kWh in 15 minutes .... 48kW

    48kW @ 240V = 200Amps.

    this is not impossible by any means. the Tesla supercharge is greater than 48kW, but those stations cost somewhere north of $50k.
     
  6. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    The smallest Tesla S is 40KwH. That works out to 160KwH/240=666 amps. Good luck getting your local utility to put that into your house. The Potential Difference website has essentially no information on it. There is no magic way to put energy into batteries...one joule is one joule.
     
    John Hatchett likes this.
  7. kabin

    kabin Member

    Joined:
    Dec 15, 2007
    167
    20
    0
    Location:
    Scottsdale, AZ
    Vehicle:
    2008 Prius
    Looks like it's a 2001 patent. It's related to the battery side of things and not wasting energy trying to charge the battery when it isn't in an ideal state to be charged. They avoid high charge currents to the battery which result in poor charge efficiency. It monitors the battery's charge state which changes many times within a split second and then apply an optimal charge.
     
  8. John H

    John H Senior Member

    Joined:
    Jun 4, 2012
    2,208
    557
    0
    Vehicle:
    2007 Prius
    Model:
    N/A
    when jsfabb asked "for your car?" I used the 12kWh needed to fully charge my 2012 Volt.


    did you keep a link to the patent ?

    I suppose a new BMS could integrate the method at a cell level and speed up charging. There is still the kW ceiling available from the utility but that could be bypassed/enhanced with some local storage like a flywheel.
     
  9. kabin

    kabin Member

    Joined:
    Dec 15, 2007
    167
    20
    0
    Location:
    Scottsdale, AZ
    Vehicle:
    2008 Prius
    John Hatchett likes this.
  10. drysider

    drysider Active Member

    Joined:
    Apr 14, 2008
    823
    332
    1
    Location:
    Liberty Lake WA
    Vehicle:
    2012 Prius
    Model:
    Four
    This really looks like Blue Sky at this point. It may be legitimate, but comparing a cell phone battery to a 40KHW EV battery may make for good press but it is bad engineering.
     
    ftl likes this.