Filed under: Hybrids/Alternative, Green
Tesla Model S sedan could have swappable battery pack
There are three main obstacles to making electric cars a viable alternative to those powered by internal combustion engines: the weight, cost and range of the batteries. Internal combustion engines have range limits based on the size of their fuel tank, but it only takes a few minutes to dump 10-15 gallons of liquid fuel in the tank and be on your way. It takes hours to recharge a battery. Fast charging systems are being developed, but they will require new infrastructure for the high currents and voltages required. The cost issue also works against range. You can reduce cost with a smaller battery, but you know what happens then. A battery with more range is both heavier and more expensive. How about a smaller swappable battery? That's one of the possible alternatives that Tesla is considering for the Model S sedan. This brings a whole different set of problems with it. Even smaller batteries will weigh several hundred pounds, making them difficult to handle. There are also safety issues with handling high voltage batteries. You also need a distribution infrastructure for the batteries and automakers have to standardize on common pack formats to make the whole idea viable. It's not like popping into a drug store for a set of AAs for you camera. Tesla's bright idea just goes to show that electric cars have a long way to go before they can replace internal combustion engines completely.
[Source: Inside Line]
Reader Comments (Page 1 of 1)
pmalloy4391 10:05AM (11/21/2008)
I like this idea, I really do You could convert most gas stations to recharge centers, drive in, pop out the battery pop in a new one thats been on a charger at the station and be on your way.
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Epyx 10:25AM (11/21/2008)
"Even smaller batteries will weigh several hundred pounds, making them difficult to handle. There are also safety issues with handling high voltage batteries"
I dont think there will be any 'popping' in and out. We are not talking about a Stomper with a AA Duracell.
But I agree in theory with your point, just don't know if it is feasible yet.
Mobius_1 10:35AM (11/21/2008)
Or make it use AA batteries (rechargeable, of course)...
I kid, I kid.
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Smegley 10:36AM (11/21/2008)
I say get Geordi and Scotty on the engineering team.
Then we can set a phaser to overload and bypass the matter/antimatter integrator thru the trionic initiator in the warp induction coils thereby creating a tachyon pulse alleviating the need to have the quantum flux penetrate the subspace field pulse and intensifying the redundant melacors ramistat 14 quilliquad interface modules.
Problem solved! Plus them phasers are a helluva lot lighter than batteries!
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Tim 10:38AM (11/21/2008)
I agree... a standard battery is best.
I always felt their should be an international union working together on making the best, lightest, quickest battery possible so all manufactures can use.
If I can go as far as to say.... build the car around the battery.
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full_of_h8 10:38AM (11/21/2008)
Kind of like swapping your old propane tank for a new one at the corner store so you can go home and grill. I like the concept, but as mentioned, delivery is another story.
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RITmusic2k 10:47AM (11/21/2008)
Time to place a call to Project Better Place...
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Noah 11:08AM (11/21/2008)
Just what I was thinking. Better Place already has the idea, has it sold to several countries (e.g. Israel, Netherlands, soon Australia) and already has a partner to make the electric car (Nissan).
Tesla should make some talks with them on battery pack design b/c I see Better Place getting setup, if not country wide, with major cities, especially in California. If Better Place sets up recharge points and swap stations between S.F. and San Diego, Tesla would be smart to partner with them and use those points.
RITmusic2k 12:09PM (11/21/2008)
If I remember correctly, the mayor of San Francisco has been interested in getting Better Place infrastructure implemented there, and has been talking to them for awhile about it now... I'm hopeful :)
why not the LS2LS7? 12:21PM (11/21/2008)
Yeah, it's most likely this car was designed in cooperation with A Better Place to fit their needs. Being "A Better Place" compatible would make it possible to sell a lot more of them in certain markets, so it's a smart move.
Matt 11:04AM (11/21/2008)
this is why there will NEED to be some kind of standardization of car batteries. Some gas stations and garages could carry the standardized battery and quickly swap it for you while you wait. Since they're getting a working battery back, it wouldn't have to cost very much. It could be like propane tanks for your barbecue.
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why not the LS2LS7? 12:22PM (11/21/2008)
Yeah, and once the pack is standardized, then Chinese companies will make packs that are compatible but substandard, and then you'll drive into a filling station and they'll swap out your $30,000 value standard pack for an inferior $15,000 knockoff that came out of some other guy's car yesterday and charge you $20 for the privilege.
I can't see how pack swapping is going to work out with owned packs, it's just too risky. It'll work with leased packs I guess but I'm not thrilled about leasing anything.
KKH 11:53AM (11/21/2008)
How about that? A coincidence that Tesla is announcing swappable batteries and Better Place's announcement?
http://www.engadget.com/2008/11/21/better-places-1-billion-electric-vehicle-grid-endorsed-by-bay/
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RITmusic2k 12:17PM (11/21/2008)
Heh, I should've read your comment and link before posting that followup to mine :-/
That's fantastic news!
Cray 11:40PM (11/22/2008)
KKH,
Thanks for posting that link.
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