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Looking for 20 Kilowatt Hour battery system

Discussion in 'Prius PHEV Plug-In Modifications' started by strongsidejedi, Jan 15, 2009.

  1. strongsidejedi

    strongsidejedi New Member

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    Does anyone have experience or located a 20 Kilowatt-Hour battery system for the Prius?
     
    #1 strongsidejedi, Jan 15, 2009
  2. hybrad2

    hybrad2 New Member

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    Sure...we have the batteries in stock in the OC. You'll need 80 each of our 90Ah batteries to make 21.6K...$13,596.00,,,You should get about 100 miles of battery power!!!

    Hybrad
    junglemotors.com
     
    #2 hybrad2, Jan 17, 2009
  3. Rokeby

    Rokeby Member

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    Hybrad2,

    Seriously, how much would those batteries weigh?

    Mebbe they'd have to be put in a trailer! :eek:

    Not so seriously, with a group buy, could we get the price down to $10K?
    :D

    Oh, and don't forget a fast charger... ;)
     
    #3 Rokeby, Jan 17, 2009
  4. strongsidejedi

    strongsidejedi New Member

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    Finding the batteries is only part of the issue. You need the charge controller and the electrical engineering to push electrical current to appropriate storage.

    Does anyone have true engineering data on the charge cycles and lifetime storage capacity of these batteries when cycled 400 times in a year and in all climates?

    The chemical battery seems to be the strongest possibility at unseating gasoline, but internal combustion is still a very cost-effective, albeit carbon based, technique.

    Please post your info.
     
    #4 strongsidejedi, Jan 17, 2009
  5. PeakOilGarage

    PeakOilGarage Nothing less than 99.9

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    Carrying that many batteries will be a major problem for the Prius. The weight is going to be over 1,000 lbs. That is about 4x heavier than the Hymotion lithium-ion 5 kwh battery. So you are going to need some serious upgrades to the springs to even support that much weight. I don't even know where you would put all of those batteries.
     
    #5 PeakOilGarage, Jan 17, 2009
  6. strongsidejedi

    strongsidejedi New Member

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    Sounds like you would lose the entire "trunk" space in the rear of the passenger compartment. Collisions (either front or back) could be a big problem if the mass is 1000 lbs.

    I may need to pare back my expectations to 10 KWH. I note that if you are buying 21 KWH of storage, you are essentially deep cycling the cells which limits lifetime.

    My guess is that 15 KWH of storage actually equates to 10 KWH of actual cycling... is this the capacity of the systems being installed?
     
    #6 strongsidejedi, Jan 17, 2009
  7. PeakOilGarage

    PeakOilGarage Nothing less than 99.9

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    Most of the batteries being installed are between 3 kwh to 8 kwh.

    The Plug-In Supply lead-acid battery is 3 kwh (I think) $6,000

    The Hymotion lithium-ion L5 system is 5 kwh. $10,000

    The Hybrids-Plus lithium-ion system is 8 kwh $20,000+
     
    #7 PeakOilGarage, Jan 17, 2009
  8. strongsidejedi

    strongsidejedi New Member

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    Thank you for the response.
    I appreciate the data because this is about physics, albeit complex when calculating the rates.

    Unless the manufacturers specify the exact characteristics of the vehicle, it is hard to evaluate the likelihood that the purchase matches need.

    It is one thing to use Hybrid to recapture energy on braking, it is a completely other dynamic to begin to extrapolate the use of the car to other functions than just driving.

    V2G is an exciting application.
     
    #8 strongsidejedi, Jan 18, 2009
  9. Mjolinor

    Mjolinor New Member

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    I am actively working on this with a few utilities right now as part of Smart Grid implementation. Hopefully some European grant money will fall my way in the next few months to allow me to buy some much needed hardware (new Prius with plug in conversion).
     
    #9 Mjolinor, Jan 18, 2009
  10. strongsidejedi

    strongsidejedi New Member

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    The V2G solution would appear to add tremendous functionality and flexibility for the owner of the car.

    By adding 20 KWH of onboard power storage, there is a capability to not only drive the vehicle a longer range. It would be able to power a small camp at night.

    KWH of storage would translate to about 750 watts of power per hour of continuous discharge for one day.

    That should be enough power to operate a small on-board refrigerator or freezer unit and associated electronic gear/satellite phone.

    I suppose one would not need a Prius to make this solution because you could make it for any vehicle.

    However, the Prius is particularly attractive due to the ability to extend range and store electricity.
     
    #10 strongsidejedi, Jan 19, 2009
  11. hill

    hill High Fiber Member

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    #11 hill, Jan 19, 2009
  12. hybrad2

    hybrad2 New Member

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    80 X 6.6lbs each = 528lbs. The GVWR is approx 3795 with the curb weight at approx 2765, so we have approx 1,030 lbs of cargo capacity. So with the large battery pack behind the rear seats you can still carry yourself and another person or two. Larger springs would be needed and air shocks are probably a good idea.

    We have a 10KW pack that fits into the rear under the carpet and only weighs 260lbs...probably a better option unless you want to make the car 100% electric.

    Hybrad
     
    #12 hybrad2, Jan 30, 2009
  13. hybrad2

    hybrad2 New Member

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    Our LiFePo4 batteries are rated for 3,000 full discharge cycles, that should last at least 10 years...but we'll only know for sure 8 years from now...

    Hybrad
     
    #13 hybrad2, Jan 30, 2009
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