Ultracapacitor battery
Well, the EEstor ultracapacitor battery is due out this season, so presumably could come along any minute now. This is the one supposedly with great secrecy, from Cedar Park (Austin) Texas. Said to have many times the energy density of a lithium ion battery, recharge in just a few minutes, and to give the vehicle range of hundreds of miles. A real breakthrough.
So, anybody heard more about this? Odds of the hype bearing fruit? Thoughts? |
Otto -
I've heard of them. Just googled and found they have a relationship with Zenn electric vehicles : EEStor - Wikipedia, the free encyclopedia Quote:
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granted fuel vapour is a little sensitive to ignition but 45Kg of TNT!!!!
after racing RC cars for a few years i've had LiPo go crispy on me and Thats scary! kinda tempting though............. in a perverse way |
...anyone familiar with electronics is WELL AWARE of how violently simple electrolytic and solid tantalum capacitors can EXPLODE...for whatever reason!
...electrolytics turn the water in the electrolytic 'paste' into instant steam, while tantalums when "reverse-charged" conduct and thermally disintegrate. ...sounds like a "real" flux-gate capacitor candidate! Where are all our DeLorean's? |
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I'd be a little concerned about the energy flow going in on their quick recharge. Anyone for some nice energetic plasma? |
Hi,
Here's a very helpful thread over at the Aptera Forum: EEStor EESU thread Apparently, EEStor has started working with Underwriters Laboratories, which is very encouraging. |
That is good news Neil. However, ultracapacitors have been 'almost there' for years now. I'll believe it when I see them.
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We don't need the high discharge rate for a car, the quick charge would be nice but lithium batteries like the A123 system batteries can handle an 80% charge in 10 minutes? any faster and your electrical service is going to have a hard time keeping up.
I could see having a bank of capacitors that are used for absorbing the braking energy and that get charged while the vehicle is charging for starting from a dead stop. The big draw back of capacitors is that as you discharge them their voltage drops drastically. |
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I used to blow up those caps you mentioned in vocational DC electronics class in High School by attaching 110AC to them - BAM-Poof! I think our good MOD has pointed out a real safety problem with this battery. Some might say it is too high a price to pay for what is otherwise a rather cool battery. It's a real good start sounds like though.... Maybe in time they can make it safer. |
After reading all about it on Wikipedia, I'm on the fence. I have been involved with electronics, and educated in such, ever since I was in 7th grade in basic electricity class. It appears this thing is really a large high power capacitor, and the critics doubts seem fairly sound and logical based on what little I know of this technology. The one thing that I think we all should heed is the fact that some mighty powerful companies have had a shot at using this battery, and for whatever reason they choose not to have anything to do with it. On speculation, I guessing it may have to do with $$ and any rights by the owner/inventor, or it could very well be safety related, and that's one thing most large companies run away from fast, is more liability likelihood.
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