Comments on: 5 Misconceptions About Electric Car Charging

By: Understanding

Understanding — Thu, 25 Mar 2010 09:50:16 +0000

The debate about “cleanliness of electricity for EVs” is just noise in my humble view.
Historically, problems are solved using “divide and conquer” strategy.
Currently vehicles AND oil, both are unclean. EV’s divide cleanliness of energy consumption right in the middle.
Say EV revolution succeeds, we just need to solve the other part – how to generate energy cleanly in centralized plants, no longer worrying about clunkers!

By: larry holliday

larry holliday — Sun, 21 Mar 2010 00:01:26 +0000

I cannot find the answer to the magic question!

HOW MUCH WILL IT COST TO RECHARGE AN ELECTRIC CAR EIGHT HOURS A NIGHT FOR ONE MONTH WITH A 220V PLUG??

By: larry holliday

larry holliday — Sat, 20 Mar 2010 23:55:11 +0000

I cannot find the answer to the magic question!

By: Japan Power & Auto Bigwigs Link for Quick-Charge Tech

Japan Power & Auto Bigwigs Link for Quick-Charge Tech — Mon, 15 Mar 2010 17:32:09 +0000

[...] an average electric vehicle battery pack in 30 minutes or less.” Nissan’s Mark Perry has said that fast charging is critically important mainly for what the company calls “destination” and “pathway” charging — at shopping [...]

By: Martin WINLOW

Martin WINLOW — Mon, 01 Mar 2010 18:01:57 +0000

Gordon, I know – I’ve tried it too! Unfortunately, as you say, your experiment was not very scientific – for starters most speedos over read by at least 5 MPH at those sorts of speeds which would completely mess things up before you even start. However, if you crunch the numbers looking at the amount of power required for a given vehicle to overcome the resistance of drag on it when on motion due to aerodynamic drag, friction in the drivetrain and tyre to road surface (to name but a few) it turns out that the 50/70 mph thing is almost exactly true.

Of course these calculations are only approximations but they would not be more than 5% or so adrift from reality. Have a look here for more on the calculating front… http://www.evconvert.com/tools/evcalc/ … all the blue bits of text expand to give you more info or allow you to tweak things. It doesn’t really matter what variables you stick in – just look at the amount of power required to do 50 mph compared with 70mph for any given gear. If you need some real gear ratios, have a look here… http://www.evalbum.com/2092. MW

By: Gordon Gunn

Gordon Gunn — Mon, 01 Mar 2010 17:36:18 +0000

I have heard that stat of doubling the energy needed to move a car 70 mph vs 50 mph before, but I'm not sure I buy it. My car does not get double the mileage at 50 mph than it gets at 70 mph. I ran an experiment (not very scientific) where I drove to work every day at 70-75 mph for one tank of gas and noted the miles the tank lasted with the trip meter, and then did the same thing driving at 50-60 mph. It made some difference, but it wasn't huge.

By: Ruvaenator

Ruvaenator — Tue, 09 Feb 2010 06:58:52 +0000

Alex, your statement "in a grid system where all power that is being created is also getting instantaneously used" is over simplified. Their is such a thing called "spinning reserve" and also they do not want to shut down a coal, or especially nuclear power station at night, so it usually runs very inefficiently at night. the real answer is using in the near future "smart meters" and "V2G electric vehicles" and V2G plug-in hybrids. You would have the choice of charging overnight when rates are low, and supply a small amount back when the grid needs it momentarily, making back a small amount. This would be a game changer. just copy the quotes and Google to find out more.

By: Coulomb Technologies Picks Up $14M for Electric Car Charging

Coulomb Technologies Picks Up $14M for Electric Car Charging — Mon, 01 Feb 2010 15:54:16 +0000

[...] province of utilities — to drivers through a network of battery charging stations (see “5 Misconceptions About Electric Car Charging“). In California, expected to be one of the largest early markets for electric vehicles, it [...]

By: Latest Electric car news – It’s Easy Being Green: Energy on the Go | Electric Hybird Vehicles

Thu, 24 Dec 2009 08:15:27 +0000

[...] 5 Misconceptions About Electric Car Charging [...]

By: KentCourt5

KentCourt5 — Fri, 11 Dec 2009 19:39:06 +0000

I like the idea of designing EVs, so that their batteries can be charged either via AC or DC, so that a basic solar kit, consisting of one or two standard solar panels, could be marketed for off-the-grid recharging. Then your Chevy Volt could be described as a solar-powered car, rather than a coal-powered car, for daily commutes of less than 40 miles round-trip. I have no idea if this is currently planned for -- but if not, then why not?

Kent