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Electric Vehicle Pros & Cons

1586 messages,  Last post on Oct 23, 2009 at 4:19 PM

You are in the Electric Vehicles Forum. Your Host is pf_flyer

What is this discussion about? Alternative Fuels, Coupe, Hatchback, Truck, Sedan, SUV


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#1517 of 1586
Re: Will new lead acid batteries surpass Li-Ion?? [tpe] by reddroverr
Nov 25, 2007 (2:37 pm)
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Replying to: tpe (Nov 20, 2007 5:29 am)

They also claim that the price of these battery packs will be low enough to allow for drivers to recoup the initial price premium of an EV within 2 years. We'll see but it sounds pretty good.
 
Let's hope so, but that statement in itself is pretty vague. Do they give what they based that statement on? I looked at the company. Tiny little thing...perhaps..perhaps.
#1518 of 1586
Re: Will new lead acid batteries surpass Li-Ion?? [reddroverr] by reddroverr
Dec 12, 2007 (1:07 pm)
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Replying to: reddroverr (Nov 25, 2007 2:37 pm)

And yet another battery in the running:
 
"Lithium ion batteries developed by the German company called Li-Tec, which is taking part in a development program with Bosch, "take up 30% less volume than those from Toyota" and "allow you to go three times further for the same weight than French models, " according to Li -Tec director Tim Schaefer.
 
Li-Tec’s ‘Separion’ system consists of two lithium electrodes in an electrolyte, separated by a flexible ceramic membrane that reportedly provides greater thermal stability than has so far been achieved in lithium ion batteries. Their tendency to overheat is what led Toyota to delay installing li-ion batteries in the forthcoming third-generation Prius hybrid. Other consortia besides Bosch are also developing lithium ion battery technologies focused on thermal control.
"
 
http://puregreencars.com/Green-Cars-News/Technology/Li-Tec-Reports-Lithium-Ion-B- attery-Breakthrough.html
#1519 of 1586
Re: Will new lead acid batteries surpass Li-Ion?? [reddroverr] by tpe
Dec 12, 2007 (2:59 pm)
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Replying to: reddroverr (Dec 12, 2007 1:07 pm)

Here's another one
 
toshiba
 
Not a lot of specifics in this article other than a 5 minute recharge time and 10 year lifespan.
 
The field of companies conducting R&D on advancing battery technology is definitely getting crowded.
#1520 of 1586
Merry Christmas by pf_flyer HOST
Dec 24, 2007 (9:39 am)
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Wouldn't it be great to find Cool Stuff under the tree in the morning?
#1521 of 1586
Electrics in the news by pf_flyer HOST
Jan 22, 2008 (5:53 am)
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More electric vehicle news on the Alternate Route
 
Perfect Storm?
#1522 of 1586
EV Battery -- ThunderSky by marketdisc
Jan 30, 2008 (9:31 pm)
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I have a few questions about batteries for Electric Vehicle, especially by Thunder Sky (TS):
 
1. Is it really viable?
I choose a TS product:
  MODEL NO:TS-LFP90AHA
  Nominal Capacity :90AH
  Operating Voltage:2.5V~4.25V
  Weight:3kg±100g
  Dimensions:145×220×68(mm)
 
Let me assume its votage is 4.00V, then the capacity of a battery is 4V x 90 Ah - 360 Wh. I know a 1.2ton-car driving at 100 km/h needs power of about 13 kw. Then a TS battery can drive the car by 360 Wh / 13 kw= 0.08 hours, i.e. 2.8 km. So to drive 280 km the car needs 100 pieces of batteries, weighting 300 kg. But it is unlikely to drive a car with 300 kg batteris. Was my calculation correct?
 
2. May I know the installed-based for ThunderSky automobiles, especially in Europe in 2005-2007? Who are its main customers? What sale growth do you expect - Any committed contract?
 
3. What's the difference for batteries used on Fuel-cell EV, Hybrid EV, and Battery EV?
#1523 of 1586
Re: EV Battery -- ThunderSky [marketdisc] by plekto
Jan 31, 2008 (2:45 pm)
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Replying to: marketdisc (Jan 30, 2008 9:31 pm)

No, your calculations are exactly right. Most EVs have a thousand pounds or more of batteries and the makers extrapolate their best case scenario and then multiply it times the battery capacity to get "mileage".
 
Real world, it's often 1/2 of that.
#1524 of 1586
Re: EV Battery -- ThunderSky [marketdisc] by apeweek
Jan 31, 2008 (8:54 pm)
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Replying to: marketdisc (Jan 30, 2008 9:31 pm)

Your best bet is to talk to others who have used the Thunder Sky batteries in their EVs. Here's a page with several of them:
 
http://www.evalbum.com/battb/THUN
#1525 of 1586
Re: EV Battery -- ThunderSky [marketdisc] by reddroverr
Feb 04, 2008 (3:59 pm)
Reply

Replying to: marketdisc (Jan 30, 2008 9:31 pm)

1. yes batteries are heavy, but the main problem at this point is cost.
 
2. sounds like you want someone to do investment research for you. contact the company or other sources.
#1526 of 1586
Mitsu finally has a car on the road by larsb
Feb 14, 2008 (5:52 am)
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This looks like it really might happen:
 
Mitsu MiEV coming soon to Japan, then the UK? USA when?
 
When it comes to city cars, the Splash is the future for Suzuki – but can the same be said of Mitsubishi’s new i? Powered solely by electricity, it doesn’t emit any CO2 on the move and sprints from 0-60mph five seconds quicker than the petrol version.
 
Called the i MiEV (which stands for Mitsubishi innovative Electric Vehicle), the car goes on sale in Japan next year and could make it here after that. Auto Express took a drive to see if it really is a glimpse of tomorrow’s world
 
Apart from the stickers and a plug-in socket, the exterior is identical to the regular i. Inside, the only changes are the addition of a battery meter, while the auto box is swapped for a selector with two modes – Drive and Eco.
 
Out goes the 660cc three-cylinder turbo petrol engine and in comes an electric motor running off lithium-ion batteries spread underneath the seats.
 
Power is identical to the petrol car, at 63bhp, but torque is up from 85Nm to 180Nm. Response is instantaneous, and the i races from 0-60mph in less than nine seconds in virtual silence.
 
Despite carrying an extra 180kg, it actually handles better than the petrol model, thanks to a lower centre of gravity, and it rides comfortably. Drive hard, though, and the batteries will run out within one hour – which is where Eco mode comes in.
 
This drops power to 42bhp, and Mitsubishi claims you can travel 100 miles before recharging. Choose the special quick-charge mode, and you can refill the batteries to 80 per cent capacity in half an hour.

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