[Oeva-list] ice equivalence

patrick0101 at gmail.com patrick0101 at gmail.com
Wed May 11 19:50:18 PDT 2011


If you are looking for a recharge time that is fast, battery swapping is the
way to go. There are issues with that, but time to full is not one of them.


Regards,
Pat
Offshore Drilling or Offshore Wind? Simple Choice


On Wed, May 11, 2011 at 7:02 PM, Alan Batie <alan at batie.org> wrote:

> I've been thinking about the cross country limitations of EVs and what
> it would take to have ICE equivalence.  With the Leaf at 24kwh and a
> 50kw charging station taking 1/2hr to fill 70% (20->90), and that
> getting you about 50 miles at freeway speeds, I'm thinking it would take
> a 75kwh pack and a 300kw charging station to give minimum ICE
> equivalence.  That would give you 150 freeway miles and a 15 minute
> recharge --- only slightly worse than a typical car (and virtually the
> same as my old 64 chevy pickup).
>
> I think battery technology will be there in 5-10 years, and I'm curious
> what the issues are in going from 50kw to 300kw --- that's nearly 1KA at
> 400V.  I think you could manage the current in the car by splitting the
> pack and charging sections in parallel, so only a very small part needs
> to actually handle that much concentrated power.  But there tend to be
> knees where issues and the related costs take big jumps, and I'm
> wondering where those would be here...
>
>
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