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HomeAircraftHelicopterMain Discussion › One minute recharge Li-Ion batteries
03-30-2005 02:23 AM  13 years agoPost 1
dCypher

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Dallas

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...just announced. Looks like battery technology is finaly advancing as fast as we'd all hoped...

http://www.toshiba.co.jp/about/press/2005_03/pr2901.htm

snipet:

TOKYO -- Toshiba Corporation today announced a breakthrough in lithium-ion batteries that makes long recharge times a thing of the past. The company's new battery can recharge 80% of a battery's energy capacity in only one minute, approximately 60 times faster than the typical lithium-ion batteries in wide use today, and combines this fast recharge time with performance-boosting improvements in energy density.

(snip)

The battery has a long life cycle, losing only 1% of capacity after 1,000 cycles of discharging and recharging, and can operate at very low temperatures. At minus 40 degrees centigrade, the battery can discharge 80% of its capacity, against 100% in an ambient temperature of 25 degree centigrade).


Major Specifications of New Battery
1) Excellent Recharge Performance
The thin battery recharges to 80% of full capacity in only a minute. Total recharge takes only a few more minutes.
2) High Energy Density
Small and light, the new battery offers a high level of storage efficiency. The prototype battery is only 3.8mm thick, 62mm high and 35mm deep and has a capacity of 600mAh.
3) Long Life Cycle
A prototype of new battery (a laminated lithium ion battery with 600mAh capacity) was discharged and fully recharged 1,000 times at a temperature of 25 degrees centigrade and lost only 1% of capacity during the test.
4) Temperature
The new battery operates well in extremes of temperature. It discharges 80% of its capacity at minus 40 degrees centigrade, against 100% at an ambient temperature of 25 degrees centigrade, and loses only 5% of capacity at temperatures as high as 45 degrees centigrade after 1,000 cycles. These characteristics assure the wide applicability of the battery as a power source for products as diverse as hybrid vehicles and mobile phones.
5) Eco-friendly Battery
The new battery can quickly store energy produced by locomotives and automobiles. This speedy and highly effective recharge characteristic of the battery will support CO2 reduction, as the battery can save and re-use energy that was simply wasted before.

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03-30-2005 02:32 AM  13 years agoPost 2
Ted Toth

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Myrtle Beach S.C.

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some more info Here

.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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03-30-2005 03:39 AM  13 years agoPost 3
Dr. Fibinotchi

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Sioux Falls SD

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nice.
cant wait till that comes out.

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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03-30-2005 04:58 AM  13 years agoPost 4
nocontrol

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Cape Town, South Africa

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Do not want to say "told you so" but this is the reason why I am hanging on before buying an electric heli. Things are moving to fast in this field and what is news today will be redundant in a month or two.

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03-30-2005 01:13 PM  13 years agoPost 5
Chopper

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Stow,Oh- oops, I mean St Louis, nope Stow again,

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Did you say redundant?
Did you say redundant?

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03-30-2005 02:07 PM  13 years agoPost 6
Laurens

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Oegstgeest, NL

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I wonder how expensive this one will be....

Edge rotorblades, Scorpion systems

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03-30-2005 02:27 PM  13 years agoPost 7
Ben-T-Spindle

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Central Illinois

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That’s a good April Fools joke.

LOL!

.

... BTS

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03-31-2005 12:54 PM  13 years agoPost 8
w.pasman

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Netherlands

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Energy density is somewhat lower than std LiPo cells it seems but furthermore it sounds great
And no it's not 1 april yet.

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03-31-2005 04:55 PM  13 years agoPost 9
IYKIST

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London united kingdom

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Nocontrol if you have to wait before you buy everything you probably will never buy anything, todays technology would almost be yesterdays technology before it hits the market.

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03-31-2005 05:25 PM  13 years agoPost 10
FLYINFOOL

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Cudahy, WI

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Lets see.
A 600mah battery that recharges to 80% capacity in 1 minute……
That means that assuming 100% efficiency (which we all know wont happen) the charge current to replace 480mah in 1 minute would be 28.8 amps.
I guess we all need much bigger chargers.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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03-31-2005 05:35 PM  13 years agoPost 11
Gyronut

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Martinsville In.

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I dont think that charge calculation is quite right.....?????

Rick

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03-31-2005 05:50 PM  13 years agoPost 12
JKos

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Redondo Beach, CA

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0.480*60 is indeed 28.8! Dang.

- John

RR rules!

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03-31-2005 06:15 PM  13 years agoPost 13
Stet

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Key Largo FL

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28A

That's a lot of juice, you'll need a new line coming in to the house, er......., I mean the garage, er,,,,,,,,,,,, I mean the bunker in the back yard.

Stored chemical energy. Gotta love it.

keepin' it real

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03-31-2005 06:38 PM  13 years agoPost 14
Dr. Fibinotchi

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Sioux Falls SD

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just hook up to the transformer out back to charge bob...
you know Engineers are nicknamed 'inkaneer' because it worked on pen and paper.

It made me laugh thinking of how many chargers they might have used to test this super fast charge battery drawing this many amps with others in parallel.

-Cody

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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03-31-2005 06:38 PM  13 years agoPost 15
zoom boy

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N.E. Lincolnshire UK

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That’s a good April Fools joke.

LOL!
Its not the 1st 'til tomorrow, so it doesnt look like a joke

For the smaller batteries, eg the >2000mAH, then it will still be useful, current chargers (good pun eh?) like the Mercury, can charge at 5A

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03-31-2005 06:58 PM  13 years agoPost 16
dCypher

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Dallas

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28 amps, huh...


...doing some more detailed math:

It would require 468 amps at 7.4V, or 28.86A at 120V. Charge it in two minutes (ignoring all system losses and heat issues) and you've solved the 120V issue. You're still trying to push 234A at 7.4V, though, which would be a problem. At 10 minutes charge time, especially if you were able to integrate the charger with the battery pack, I can see how it might be feasible.

Still a hell of a lot better than what we have now


ps: April fool's is a wholey european (if not american only) tradition. It'd be hard to convince Toshiba, on their Japanese sight, to pull such a prank.

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03-31-2005 07:50 PM  13 years agoPost 17
JKos

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Redondo Beach, CA

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dCypher,
Where did you come up with 468 A? It does not matter what the voltage of the pack is, current is current. Power is another issue, however.

To obtain 480 mAh in one minute requires 28.8 A of current. If it s a 2S pack take 8.4 V times 28.8 A and that is 241.9 W. Divide by 120 V and you get 2 A. All assuming 100% efficiency.

- John

RR rules!

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03-31-2005 08:28 PM  13 years agoPost 18
FLYINFOOL

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Cudahy, WI

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This sounds more like marketing has invented this, and had management order engineering to change the laws of physics if necessary, to make it happen.

I've seen it before.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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04-02-2005 08:29 PM  13 years agoPost 19
w.pasman

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Netherlands

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Such charge rates seem pretty impossible! Not that the chargers can't deliver it, but at such rates the internal resistance of the wires and pack itself are becoming major obstacles. You would need quite some extra voltage to get such a current. And we all know what happens when you put too much voltage on such packs

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04-02-2005 09:27 PM  13 years agoPost 20
zoom boy

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N.E. Lincolnshire UK

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Thats too much current, not too much voltage, but even if there are no chargers currently available, they will be usefull because of waiting over an hour, you can charge in maybe 20 minutes

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