Yes, there is probably a trade-off, but it also means that your 'power' electronics on each pack is a lot smaller, so you get a distributed system instead of just a few 'large' switching components. Also, you get an element of redundancy so that any single failure means you still have a working vehicle.
Charlie
Batteries are lots of trouble in traditional gas powered cars in cold weather.
Wouldn't batteries as primary power source be a bad idea in colder northern states?
How economical would all electric cabin heat be?
Indeed. Current efforts seem to be bent on restoring economic growth. Preferably double-digit growth, as the world was so proud of only months ago. Continuous exponential growth in a world with finite resources is clearly impossible. I'd argue that the only way to get a stable economy is to moderate -and ultimately stop- overall growth.
Jeroen Belleman
no it doesn't after 1 minute with the foot hard on the "go" pedal the driver crashes at 100Mph.
Sensible answer: a 75Kw elecric car motor will not be consuming 75Kw of power all the time that the vehicle is in motion.
Thermal plants aren't much better. it takes several hours (half a day?) to ramp a boiler up or down. hydro can be turned on or off rapidly. but diesel can too.
It is funny money, and much of it will nicely line the pockets of selected few. Which is not that funny.
First time I heard of these bailouts I asked myself how they plan to control where the money goes. What's a couple millions out of say 50 billions?
M
I see this thread generated quite an interest. To see what DIYers are doing, check these forums. This one has the most traffic,
In article , snipped-for-privacy@yahoo.com says...>
No, they were asking for government largess or ROI, depending on your POV.
It more than likely can NOT be made to work reliably without a modular electronic approach involving distributed cell monitoring and balancing. Whether the individual modules are made replacable by the user, by service personnel, or not at all, is another thing. There also could well be some safety requirement that demands internal barriers in the battery pack so it can't self destruct from relatively minor damage.
Best regards, Spehro Pefhany
-- "it\'s the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Karl Rove was a Democrat?
-- Bill Sloman, Nijmegen
If they wanted to stimulate the economy they'd get rid of the capital gains tax and all corporate taxes, permanently.
Charlie E. wrote in news: snipped-for-privacy@4ax.com:
doubtful on the last part of your post,because it's likely the motor controller will shut down if the pack voltage drops beyond some set point,to prevent further pack damage,or undervoltage damage to the motor itself. I believe most of the power systems on electrc cars today are the DC-AC type,the controller converting the DC power pack's output to AC to run an AC motor.
there might not be any way to shunt the "good" cells around the bad ones,either.
-- Jim Yanik jyanik at kua.net
[snip]
I forgot to mention, 5-passengers, seated in comfort, and all their luggage for 1 week stashed in the trunk ;-)
...Jim Thompson
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I love to cook with wine Sometimes I even put it in the food
Only a small fraction is going to long-term infrastructure type stuff. The rest will simply be scattered and wasted, another binge of spending for its own sake.
John
Corporate taxes, certainly. And unemployment, FICA, and workman's comp. Shift it all to sales taxes. Or export jobe to places that don't have those costs.
John
There's still lots of room for sensible growth. Much of the world is still dirt-poor, and we could help one another if we did the right things. We don't need ever-more Cadillac SUVs and plastic lawn furniture.
John
True. They are no saver to their passengers than smaller vehicles would be, but they make it more dangerous for those smaller vehicles. Everybody loses.
John
Lovins says big is safer too--more crumple zone. Weight kills (but probably the other guy).
Lecture 3, here:
Cheers, James Arthur
Jim Thompson wrote in news: snipped-for-privacy@4ax.com:
for those few occasions that you travel enmasse,you can RENT one of those. You don't drive a U-Haul truck daily just because you need to move once in a while.
-- Jim Yanik jyanik at kua.net
James Arthur wrote in news:rKkgl.643$ snipped-for-privacy@nwrddc01.gnilink.net:
the big stuff tends to roll over,is less maneuverable(accident AVOIDance),and harder to park. Also more prone to "lose control",and harder to recover.
-- Jim Yanik jyanik at kua.net
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