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QuoteIt's a shame that inconsiderate car drivers often make cycling on our roads an unpleasant and hazardous activity.As they don't pay road tax, do cyclists deserve any consideration? (I'm not advocating knocking them over on purpose.)
It's a shame that inconsiderate car drivers often make cycling on our roads an unpleasant and hazardous activity.
And how many cyclists 'consider' the pedestrians they terrorise on the pavements?
When I cycle, I behave as if in a car and do my best not to piss off other road users. I am in a minority.
We've been here before. It's the power supply that the filling station would need that's the problem.If you need to charge a 2000Ah battery in 1/100 of an hour (i.e. less than a minute) you would need to charge at 200,000A. That's going to need around 1,000A of mains power for each vehicle being charged.
wolfekeeperStoring energy at the filling station would cost a lot
the efficiency of such a fast cycle could be quite low (I2R losses, mainly - there is a lower limit to the possible resistance of cables).
You don't do it that often, mostly you plug in at home.
My household supply could fill up a 50 kWh battery as used by Tesla Roadster just fine thanks, overnight, from completely empty.I mean, even the cooker circuit is rated at 7.2 kW. It could do that in 7 hours.And my daily commute is nothing like the 200+ miles that the Tesla manages; more like 20.
There's lots of different sorts of batteries out there though. Li-Ion seem good for frequent use and have an excellent capacity/weight ratio. Others are a bit heavier but have much better shelf life.
We've been here before. It's the power supply that the filling station would need that's the problem.If you need to charge a 2000Ah battery in 1/100 of an hour (i.e. less than a minute) you would need to charge at 200,000A. That's going to need around 1,000A of mains power for each vehicle being charged. Then there's all the heat that it would produce during charging.A petrol pump gets the energy in with much less fuss.
Other researchers have already modified lithium iron phosphate to achieve power levels high enough for power tools and for most hybrid vehicles. Indeed, iron phosphate batteries are already being sold by more than one battery maker for such applications. Ultimately, the energy capacity of lithium iron phosphate is lower than that of other lithium-ion battery materials, making Ceder's advance of limited value, says Jeff Dahn, a professor of physics at Dalhousie University, in Halifax, Nova Scotia. This battery is good for acceleration, but not as much for long range. "A real breakthrough . . . would be a new positive electrode material with quantum-leap performance specs" in energy storage, Dahn says.
why cant we make an electric car that charges as quickly as it depletes?using a system of alternators and capacitors, you could power an electric motor. the battery starts it going and then it runs and charges itself, using the battery as a sort of "pressure tank" so to speak, to maintain voltage levels, like a pressure tank on an air compressor maintains air pressure consistency. Its a little project im working on with a 12 volt battery, a few old car alternators, and a motor from a 12 volt water pump.