R
Rob Dekker
Guest
"AZDuffman" <srduffy1126@gmail.com> wrote in message news:1abf7ca0-a8fd-4581-b00f-f75aa74305d6@g37g2000yqn.googlegroups.com...
.....
Consider that the first line of hybrids is already out (with Nickel Metal Hydrate batteries), and the second line of will be Plug-in
hybrids.
And I claim that current battery technology is ready for that scenario :
First of all, there will be no fast recharges for these PHEVs and not because of battery limitations.
There is no high-power re-charging infrastructure in place currently and the grid cannot handle massive fast vehicle recharges, to
mention just two of these challenges unrelated to batteries. So the first PHEV batteries will be charged off-peak (overnight) in
people's garages.
Second, for plug-in hybrids, there is a (small) ICE on-board, which solves the problem of limited range of affordable electrical
storage.
Your first 40 miles (or so) will be all electric, after that the ICE will kick in for long range. That is a good (cost and
capabilities) ballance between battery capabilities and ICE capabilities. When successfull on a large scale, this scenario will make
a significant dent (up to 50%) in our vehicular oil usage (DOE reports).
For this scenario (slow charges and limited 40 mile electric range) there is a spectrum of battery technologies available.
Batteries technologies like LiFePO4 (Lithium Iron Phosphate), ZEBRA (NaNiCl), Li-ion, Li-polymer and even NiMH all are suitable for
use in Plug-In Hybrid EVs, albeit each with their own advantages and disadvantages.
My opinion is that we are currently entered a transition phase from gasoline power to electric power and this will last at least 20
years regardless of which ultimate solution will win. Batteries are ready for this phase of the transition and will get better and
cheaper over time and with volume production.
Solutions like "slotting the freeways" and "5 min EV charging stations" are not even an option right now (immense infrastructure and
grid load issues). They are also not necessary : Oil supplies will slowly reduce after Peak Oil and there will be periods (like
right now) when consumption is again below production, with resulting low gasoiline prices. During such periods there will be little
incentive for anyone to pay anything extra for 'plug-in' electric drive. So I think we will see an 'evolution' rather than a
'revolution' and not just because of battery technology limitations.
So the Volt is nice, but I wonder if GM we be producing them....
>
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That is a very general statement and kind of throwing out the baby with the bathwater.Not sure where Bret gets the idea that the electricity would be free.
But there are two reasons why electric vehicles are cheaper to run than ICEs
:
(1) Electric power can be generated at higher efficiency than ICEs in
traditional cars.
Electric power plants run at 40% or more, ICEs run at 20% or less.
(2) Electric power can be generated from many different sources (coal,
nuclear, nat.gas., hydro, renewables etc), while ICEs need liquid fuel
(derived from oil). The cost of these other sources is considerably less
(per BTU) than oil. That is one reason why electricity is NOT generated from
liquid fuels. It would simply be too expensive.
These two reasons result in a 2-4X reduction in cost for electric powered
vehicles versus gasoline (or other liquid fuel) vehicles.
That means you 'pump' electric grid power for less than $1/gallon
equivalent.
That's it in gross terms why electric drive is cheaper than gasoline
vehicles.
All we need is a good, low cost battery and some car manufacturers that want
to make these vehicles.
The battery has always been the thing and IMHO always will. Power
just seems to not want to be stored.
Consider that the first line of hybrids is already out (with Nickel Metal Hydrate batteries), and the second line of will be Plug-in
hybrids.
And I claim that current battery technology is ready for that scenario :
First of all, there will be no fast recharges for these PHEVs and not because of battery limitations.
There is no high-power re-charging infrastructure in place currently and the grid cannot handle massive fast vehicle recharges, to
mention just two of these challenges unrelated to batteries. So the first PHEV batteries will be charged off-peak (overnight) in
people's garages.
Second, for plug-in hybrids, there is a (small) ICE on-board, which solves the problem of limited range of affordable electrical
storage.
Your first 40 miles (or so) will be all electric, after that the ICE will kick in for long range. That is a good (cost and
capabilities) ballance between battery capabilities and ICE capabilities. When successfull on a large scale, this scenario will make
a significant dent (up to 50%) in our vehicular oil usage (DOE reports).
For this scenario (slow charges and limited 40 mile electric range) there is a spectrum of battery technologies available.
Batteries technologies like LiFePO4 (Lithium Iron Phosphate), ZEBRA (NaNiCl), Li-ion, Li-polymer and even NiMH all are suitable for
use in Plug-In Hybrid EVs, albeit each with their own advantages and disadvantages.
My opinion is that we are currently entered a transition phase from gasoline power to electric power and this will last at least 20
years regardless of which ultimate solution will win. Batteries are ready for this phase of the transition and will get better and
cheaper over time and with volume production.
Solutions like "slotting the freeways" and "5 min EV charging stations" are not even an option right now (immense infrastructure and
grid load issues). They are also not necessary : Oil supplies will slowly reduce after Peak Oil and there will be periods (like
right now) when consumption is again below production, with resulting low gasoiline prices. During such periods there will be little
incentive for anyone to pay anything extra for 'plug-in' electric drive. So I think we will see an 'evolution' rather than a
'revolution' and not just because of battery technology limitations.
Plug-in is definitely the next big thing, if oil prices want to go up again.Your post only gets half the
advantages to electric, though. Electric motots are "off" when
sitting while ICEs must idle. Second, anyone can watch and see that
an electric motor gets up to full power faster than an ICE, and keeps
at its full power easier than an ICE keeps at the top of its power
curve.
But it still all comes down to storing the power. They have been
promising better batteries for 40 years now, 100 + if you go all the
way back. Again, I just don't think it will happen. GM has the best
idea so far with the Volt. Plug-in when you can, charge it locomotive-
style when you must.
So the Volt is nice, but I wonder if GM we be producing them....
>