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IS it Logical to use Lithium ions in noramal cars?

Just Normal cars,not electric ones..I think it may not be able to charge and discharge at the same time for Lithium family..Am i right?

pls  point out some faults..that you think may occur?

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iceng4 years ago
The Tesla sports car is being delivered in California with the entire floor
made up of liquid cooled laptop lithium batteries.
Tesla uses an induction machine as the drive for improved acceleration
that outperforms BMW's best and travels 300 miles on a single charge....

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Vyger iceng4 years ago
If it runs out of juice in the middle of the expressway do you have to have it towed or can you get a jump charge from a passerby? I know 300 miles seems like a good distance but where I live that would not even get you to a WalMart and back.
jrh065 Vyger4 years ago
I wonder if you could charge it with a tow truck by leaving the drive wheels on the ground. :D The tow truck driver would be mighty confused after you drove off after a tow.
iceng jrh0654 years ago
I never like to trust figures, even those enveloped in flawless epidermis.

Lead Acid Batteries are only able to return half of the charging energy put into them, 50% efficiency ! !

Lion batteries actually return 80% of their energy, if they are the Dumb kind.

Smart Lion batteries on the other hand loose charge with time and can be

below that figure.

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iceng Vyger4 years ago
A very good question.

If I had all that computing power, you can guarantee there would be sufficient
warning to let you plug in any where. I understand power stations will dot the
highways at 100 mile intervals soon..
The power distribution to coincide with farming lots and distributed
manufacturing areas.

But what do I know about anything..... Just Never Believe a politician...
How fast can you charge it ? That to me is a key parameter.
Under 1 hr, there is a micro on each cell.
Jeeesus, that's some charging rate. No wonder they're liquid cooling the pack.

....and how many charge cycles are they good for ?

Steve
The F1 KERS system recharges a 60 Kw Lion battery pack in a few seconds during braking !

http://www.formula1.com/news/features/2009/1/8887.html
110 KJ of energy is dissipated to stop a 1.3 Ton car traveling at 48 km/h..
And that is full 100% conversion of kinetic energy to electrical energy..
Which is not possible to do so today..

That works out to only a 100Watts for 18 minutes
or 55KW for 2 seconds
but I could not find any text that said a Lion battery pack could absorbe
that power in that time frame ???

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I respect your figures and can only point to the link where the manufacturers describe the system (in general terms) - On the other hand i guess the charging is done over several braking phases and I doubt the packs are full discharged.

i have seen an interview sometime where the commentator said the battery packs don't last long and are fraught with problems.
I never like to trust figures, even those enveloped in flawless epidermis.

Lead Acid Batteries are only able to return half of the charging energy put into them, 50% efficiency ! !

Lion batteries actually return 80% of their energy, if they are the Dumb kind.
Smart Lion batteries on the other hand loose charge with time and can be
below that figure.

A
I don't think they know, perhaps the guarantee which I have not found..
The charger is on board in the car and the induction motor is also Liquid Cooled.

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lemonie4 years ago
Lead-acid batteries can supply very heavy current, such as you need for cold-starting, and that's why they are used. Also, they aren't easily damaged by "rough" charging.

L
Vyger lemonie4 years ago
They also don't catch on fire. But they can explode because of the hydrogen if they are not vented correctly.
And lead acid survives things like gravel roads with out shorting out. (Usually)
verence Vyger4 years ago
Modern lead batteries all have vents to release over pressure.
iceng4 years ago
So.... yes you are right but each cell must be watched for voltage and
temperature to survive...

They are powerful, light and charge tricky....

A
Providing it can supply enough current to run the starter, any battery technology could be used in a conventional car. The only problems with using lithium batteries instead of a normal lead-acid battery are currently cost and comparative difficulty to charge properly.

A normal battery is either charging or discharging at a given point, not both. If the circuit the battery is in receives more energy than it is using, the battery charges. If the circuit is using more energy than it is receiving, the battery discharges.

Lithium batteries would probably be better than lead-acid batteries in modern cars as they work well with only partial charging and discharging and are lighter than other battery types of the same capacity.
I suspect its very hard to make a Lion battery with the CCA of lead-acid batteries.
I had noticed the low working current of normal lithium cells when seeing if they were suitable to use with a motor I had. IIRC, the cells from a laptop battery were only good for a couple of amps, whereas a similar Ni-MH would safely supply over 20A.

I'm sure I've seen automotive lithium battery packs being made before. They were made from a stack of thin, plate shaped cells, presumably connected in parallel. I guess the shape and quantity of the cells gives a bigger surface area or something to maximise the available current.