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View Full Version : New type of battery pushed for hybrid cars.


xcel
12-16-2006, 11:33 PM
Maker says it's safer and cheaper. (http://www.freep.com/apps/pbcs.dll/article?AID=/20061216/BUSINESS01/612160326/1014)

http://www.cleanmpg.com/photos/data/501/FireFly_Mgmt_with_all-electric_riding_lawn_mower.jpgJason Roberson – Detroit Free Press – Dec. 16, 2006

Firefly Energy’s CEO and Senior VP, Edward Williams and Mil Ovan on and behind an electric riding lawnmower powered by Firefly's own Carbon Foam Core Battery.

Executives with Firefly Energy Inc., a battery developer in Peoria, Ill., came to Detroit on Friday pitching what they said was a smaller, safer and less expensive battery than those now used in hybrid electric vehicles.

Firefly cofounders Mil Ovan and Ed Williams are visiting automakers worldwide, persuading them to use their patented lead acid batteries -- equipped with carbon in lieu of metal -- instead of nickel-metal hydride and lithium-ion batteries.

Ovan declined to say which Detroit automakers he visited, but Firefly, a former division of Peoria-based Caterpillar Inc., has customers that include the U.S. Army and Husqvarna AB, the world's largest lawn equipment manufacturer.

Battery manufacturers are competing to cash in on the fast-growing hybrid vehicle segment. The industry is dominated by manufacturers of nickel-metal hydride batteries, though lithium-ion has promised to be a better option.

Until now, carbon was avoided in lead acid batteries because it created gases that shortened the battery's life. But four years ago, Kurt Kelley, then a Caterpillar research scientist, tinkered with a lead acid battery and a scrap piece of carbon foam leftover from another Caterpillar department.

"And voila," Ovan said.

Firefly claims the battery is 70% lighter, recharges seven times faster and lasts two times longer than conventional lead acid batteries and that it is safer and costs less than today's hybrid electric batteries.

Pravus Prime
12-17-2006, 01:56 AM
But there's no mention of the charging lifetime or equivalent capacities though.

If they were/are equivalent, then that seems like one heck of a step forward. Sounds pretty darn cool.

xcel
12-17-2006, 07:30 AM
Hi Rich:

___The std. Pb-Acid has a lifespan of ~ 300 cycles w/ a 90 - 100% DoD in the lab. As we know, none of us push our 12V’s anywhere near that harsh of a cycle and they seem to die every 3 - 4 years. If the price is right, I could see a niche business but they still do not pack the punch of a Ni-MH and especially Li-Ion. We are looking at lab based pronouncements vs. in the field use as well I belive? I would love to have a much lighter weight 12V made by these guys to bang away on for a year to see for myself but one thing is for certain, there is not enough Lithium or Nickel in the world to make packs for every automobile out there today let alone tomorrow.

___Good Luck

___Wayne

AshenGrey
12-17-2006, 09:29 AM
well... if it's ligter and cheaper, it seams like it could at least replace the ultra-heavy 12v pba backup battery that hybrids use. Shaving some weight off a car is always a good thing.

NEmystic
12-17-2006, 09:51 PM
This past summer, I spoke with a high school teacher exhibiting his 1970's era electric lawnmower/tractor at an event in Ipswich, MA. If I recall correctly, the vehicle was built by General Electric. The batteries were of course heavy pb-acid, but if my assumptions are correct, that vehicle was significantly more efficient than the average contemporary riding mower. I believe that the efficiency of an internal combustion engine riding mower is somewhere between that of a battle tank and a battleship, measured in gallons per mile (as opposed to miles per gallon).
It seems now that the leading edge battery technology is being applied very selectively as part of a careful marketing strategy to maximize future profits.
While I'd be very grateful to have access to the best battery technology for my EV commuter bicycle, I'm not optimistic that it will be accessible in a cost effective way in the foreseeable future.

andy
12-18-2006, 07:04 PM
As we know, none of us push our 12V’s anywhere near that harsh of a cycle and they seem to die every 3 - 4 years.

Hi Wayne,

I just changed my mom's battery a couple of weeks ago in her 1994 Lincoln Towncar...



---original battery, 12 years old---


Yes, she does drive it. 140,000 miles, two trips to Alaska, and a trip to Florida every winter.

Don't ask me how she did it. One thing she is anal about is ALWAYS parking in the shade in summer, and of course her car is garage kept. She get's 27 mpg on the highway in that tank! I have to say I have much respect for Ford when it comes to that Lincoln. It has been an awsome car!

andy
12-18-2006, 07:05 PM
I just re-read my post, and I can't believe my mom would take a car to Alaska with a (at the time) 10 year old battery. Is she crazy?!?

mrbigh
12-18-2006, 07:41 PM
I would change my 20 PbA for the famous Firefly on a blink of an eye and become a Ginny pig for technology sake...........



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