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Nanotech Battery Claims to Solve Electric Car Woes
Posted by
Zonk
on Sat Feb 17, 2007 03:50 PM
from the down-with-woes dept.
from the down-with-woes dept.
rbgrn writes "A123 Systems claims to have invented a Lithium Ion battery that not only can discharge at very high rates of current but can be recharged very quickly without damage to the cells or overheating. From their website: 'A unique feature of A123Systems' M1 cells is their ability to charge to high capacity in 5 minutes or less. That's a significant improvement over traditional Li Ion, which typically requires more than 90 minutes to reach a similar level of charge.' Using this technology, General Motors has announced a plug-in hybrid SUV and Venture Vehicles is developing a fully electric 3 wheel vehicle. Politics aside, the main technological hurdle to mass adoption of electric cars has been a fuel station replacement when driving distances beyond a single charge worth of range. Will we finally be seeing high current recharge stations in the next decade?"
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Probably not (Score:5, Insightful)
On the other hand, overnight charging of the batteries (when power stations have spare capacity) is an extremely good idea, and indeed the dual hybrid concept good at good write up last year.
So my suggestion is: Yes, this is a really good idea, yes it is progress in terms of better flexibility of power supplies, yes it goes some way to resolve the problem that you cannot easily store electrical power by allowing it to be stored in a big distributed network of vehicles - but ten years is for too soon for it to take over as a technology.
The progressively replacement of gasoline engines by Diesel in Europe has been going on for over 20 years now, and that's probably a realistic timeframe. 20 years to get market penetration of battery vehicles, and then, only if renewable fuels turn out to be a failure, the progressive development of very high power charging stations.
Less like a gas station than like a substation (Score:3, Interesting)
Every electric drive system I've seen from the Prius to electric dragsters winds up at a design
Hybrids will be the bridging tech (Score:5, Interesting)
The solution is to build hybrids with fast charging batteries. Then car buyers can invest without fear of getting stranded. Once a large fleet is on the roads, service stations will start to convert.
BTW, this all asumes that TFA and similar techs are not vaporware.
Cost? (Score:5, Insightful)
While this is interesting, I have to wonder about the cost of these batteries. I've seen many of these stories before, about some wonderful electric vehicle that's going to replace the gas-burner real soon. Except that the batteries needed cost more than any vehicle currently on the road. But it'll be practical "as soon as we get the costs down!"
I'll get excited when someone announces a reasonably priced, high-density, quick recharge battery. Until then, I'm going to regard it as yet another prototype - an interesting idea, but one of many.
The real deal (Score:5, Informative)
They do perform extremely well, with about 2/3 the energy density of Li-Po, but with the dis/charge abilities of a good Ni-Cd. They are also supposed to have a very good service life, over 1000 complete charge cycles. At about 1/2 the price of Li-Po's I'm looking at picking some up for an upcoming EV project.
http://www.a123systems.com/html/home.html [a123systems.com]
http://www.a123racing.com/ [a123racing.com]
My EV project:
http://www.easyracers.com/pod/ [easyracers.com]
Gabe
The BESTsource for emerging battery tech... (Score:5, Informative)
Check 'em out,
http://www.rcgroups.com/batteries-and-chargers-12
You Don't Need to Replace Gas Pumps (Score:3, Interesting)
Plug in, order amount of electricity, go do your shopping/etc. and come back to a car ready to go. Employers could also do this at their offices, at first offering it as an employee perk and down the road as an additional revenue stream.
This could create competitive advantage in the near team and additional revenue long term for many companies.
Interchangeable batteries (Score:4, Insightful)
Who Killed The Electric Car? (Score:4, Interesting)
Go watch it.
Re:conservation of energy (Score:4, Insightful)
Re:conservation of energy (Score:5, Interesting)
Another feature is that it is a passively safe design; meltdowns simply aren't possible. Anyways, the interviews in the external links of that wikipedia article are very interesting and informative.
Re: (Score:3, Insightful)
Re:conservation of energy (Score:5, Informative)
Yes, of course you have to recharge you car from the grid. The amperage required is not any more than typical household service, particularly if you are willing to let it charge overnight. 220 volts is even better than 110 for charging cars, and it really doesn't take more than your house already has.
As far as the generating issue, it is much cheaper and easier to clean pollution from a large single source than it is millions of mobile sources which are poorly maintained by their owners. Coal might not be that clean, but new coal-fired plants are better than old ones, and they are probably better than the number of gas powered cars it could replace. It is also more efficient, even with transmission losses, than the gas cars. Finally, if you want to make your power plant cleaner at some point in the future it is a bit easier than retrofitting a large number of cars.
These things have been discussed to death all over the net, you obviously have not read anything about this subject at all.
http://www.electroauto.com/info/pollmyth.shtml [electroauto.com]
Re:conservation of energy (Score:4, Insightful)
Also, the power plant is not sitting in traffic on the street next to sidewalks and apartments full of people. Even if the only benefit were to relocate pollution, even if none of the other advantages existed, there'd still be a benefit.
Re:conservation of energy (Score:5, Interesting)
> 220 volts is even better than 110 for charging cars, and it really doesn't take more than your house already has.
Yes it would add a hell of a lot of load to the grid if everyone had an electric car cooking at home every night, but that problem is probably managable, since night time is normally lighter loaded.
The big question nobody wants to look at is Interstate recharging. Take a look at a big fscking Roadrunner station with twenty plus 'pumps' recharging batteries in five minutes and run those numbers. Put the sucker out in the boonies between cities and ask yourself where they are going to get the power from? Now imagine everyone is running away from a hurricane/terrorist attack and those 'pumps' are going to have to be able to hammer away for 12 plus hours with a line at every pump. Onsite storage isn't an option for that kind of demand and the grid as it currently exists simply can't do it either.
Everyone wants to think it just because 'big oil' doesn't want electric cars that the infrastructure hasn't magically appeared. It isn't. Even if the demand existed to justify it, nobody currently knows HOW to build it. These are hard problems, but we do need to keep trying to solve them because buying oil from our enemies isn't the brightest idea even if you think 'global warming' is a communist plot.
Re:conservation of energy (Score:5, Insightful)
I wonder how much charge a tanker-truck sized truck could carry as cargo? This might actually be cheaper than maintaining lines if the losses were lower than line loss. (Don't know how to figure that?) (And depending on how expensive the batteries were.)
Also, the obvious way to go, if one can work out the mechanics, is to charge the vehicles by swapping batteries. It might not be the best...but also it might. This would, however, require:
a) standardization of size, shape, and connections, and
b) a meter built into the battery which would display how many watt-hours it was storing.
This probably won't happen because any economic benefit would probably be marginal, and also because getting companies to agree on a standard is...dubious.
Nope (Score:5, Informative)
Umm... what? You're just wrong here.
Long-distance (100+ miles) electric transmission is quite common throughout the US. Link [wikipedia.org]
In most states, you're rarely more than a hundred miles away from the nearest power plant, of one kind or another. Another link. [wikipedia.org]
Yes, a commercial recharging station on a major interstate would probably need it's own substation. But the paper mills in northeastern NC I drive past on the way to visit my parents every few months have their own substations. The electric load from those is much higher than any electric roadrunner would ever need. It's not a particularly hard problem, or one that hasn't been solved before. It would put more demand on the electric grid, that's true. And if everyone in the US bought an electic car eventually, we'd definetely need to build more power plants.
But it's not lack of a technical innovation,nor a conspiracy, that is preventing that from happening - it's the chicken/egg problem. Few people will buy electric cars before the infrastructure exists, few companies will set up infrastructure while there's few customers.
Re: (Score:3, Interesting)
The point of the tech this article presents is that the battery only takes 5 minutes to recharge. You could just install a power outlet at the fuel station. Plug your car in, browse the shop during those five minutes (regular refueling isn't really faster
Re:conservation of energy (Score:4, Informative)
First, you forget that a car doesn't use all of it's power constantly. A gasoline engine has a huge margin over what's needed to maintain a car's speed just to enable quick acceleration. Second, Watts are a power measure, not an energy measure. The only reason you need to worry about power when it comes to batteries is that they can only release so much power at a time.
Still, due to the wonders that is the efficiency of a electric motor(90+%) and regenerative braking, you can generally get by with 1/2 - 1/3 the horsepower rating for an electric vehicle over a gasoline one. The problem has always been one that the amount of energy you can stuff into a gas tank is orders of magnitude than a similar size or weight of batteries. Electric - Great motor, lousy storage, Hydrocarbon - Fantastic storage, lousy motor.'
Another wierdness is that gasoline engines are rated by their maximum horsepower, whereas an electric motor is rated at it's continous duty cycle. That means that you can 'undersize' the engine even more, because it's quite possible to run many motors at 300% for short periods of time. This is because the main problem with overdriving an electric motor is simply the motor's capability to disperse heat. You can safely overdrive it for short periods, as long as you don't fry the engine. Larger engines use heavier wire, reducing heat generation and increasing heat dispersion capabilities. Larger motor's are also more efficient on average though, so reducing below a certain level doesn't gain you much.
So an electric car can get by with a much smaller engine than a gasoline one(just overdrive during acceleration, controlled by the computer).
As for the wattage required, the tesla roadster takes 110 watt-hours [stanford.edu] on average for a kilometer. As the article noted, the roadster is 'performance tuned', not 'economy tuned'. Still, it's a smaller vehicle, incabable to holding the cargo average users would ask of a primary car.
That would be
I think they're counting on an activly cooled extremely high voltage battery, that's still more efficient than stuff on the market today.
Re:conservation of energy (Score:5, Informative)
Batteries also have come a long way and are fairly efficient for storage. It's much better than, say, hydrogen powered cars.
The main drawback right now for electric cars is the cost, and even so they remain popular. I know a couple of people at Tesla Motors and they have already sold out their allotment of cars for the first two years, and these are going for $100K each. It sounds like they will be coming out with a 5 passenger vehicle at around $50K around 2009. With the rapid rate of battery evolution I expect they will become more and more affordable.
One final note, the cost per mile for an electric vehicle is much less than gasoline, even without the large deductions EV owners can typically make. Last I looked, it worked out to something around $1.50/mile even with the very high cost of electricity where I live (where I often pay over $0.20/kwh).
The solution I see for our energy needs is to not only continue to invest in solar and wind, but to also build nuclear breeder reactors and nuclear power generation. The breeder reactors will significantly increase the amount of nuclear fuel available and eliminate much of the nuclear waste which they want to bury in Nevada. And modern nuclear power plants are far safer than the ones of the past. Solar and wind alone will not solve our energy needs though they will help. Hydroelectric is mostly tapped out, though there's still a lot of room for geothermal.
Re: (Score:3, Insightful)
Re:$1.50 a mile? WTF (Score:5, Informative)
I live in quite cold climate(last week's high was -15F), and getting gas powered cars to start and warm up is a challenge. The number ONE problem we have is batteries going dead overnight in the cold. You can trickle charge them or put a warmer on them to prevent it, but if the entire car runs on battery I would imagine the battery life to be very poor.
Then, tack on the heater issue... Sounds pretty infeasible around these parts. Although, a possible solution would be to do what is currently done with gas cars, and pipe whatever excess heat is made by the motor into the cab. I'm not sure how much that would produce, but it would increase the efficiency a bit.
I've seen a few cold weather tests for hybrid and turbo desiel around here. The hybrids seem to crap out about -10F to -15F and a few of the TD seem to drop out about -35F. The gas, assuming it starts, don't have issues running in cold.
Re: (Score:3, Informative)
The only piece missing from either all-electric or "real hybrid" is a good* battery. Every Other Problem is a question of just putting existing technology into p
Why not have a pooled battery swap system? (Score:3, Interesting)
Re:High current recharge stations? (Score:5, Informative)
hell, quite a few oil companies don't even own refineries anymore. A lot of the gas people buy today comes from independant refineries.
I don't think we will outgrow carpet, plastic bags, and the millions of other items that currently use oil.
Plus, they have all that land now, think about it, ready made recharging stations