Why sure, but what I meant is that imagining we have the supercapacitor betteries, there would be no point in swapping them rather than transferring the juice. With such betteries swapping just wouldn't fit in the picture, although as you say there would be no other option for lead-acid batteries.
Michel ----- Original Message ----- From: "Jed Rothwell" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, February 09, 2007 5:17 PM Subject: Re: [Vo]: "Bettery" on-the-way? > Michel Jullian wrote: > >>Battery swapping has been mentioned, why not just empty the "gas" >>station's full one into the car's empty one? > > That is what we have in mind when we talk about a "bank" of supercapacitors. > > With something like a lead-acid battery which takes a long time to > recharge, swapping battery packs is probably a more practical > technique. This is an old idea. I recall reading about schemes to > swap batteries back as 1960s, in Popular Science. Compared to 1960, > it would be easier and safer to implement a battery exchange scheme > nowadays, now that we have RFID tags, computer networks and so on. I > doubt that many people would steal the battery packs, any more than > they steal propane tanks today. (No doubt a few drunk high school > kids do steal propane tanks.) A battery pack might be damaged in an > accident, but this sort of thing could easily be checked for with > computer testing systems. The propane tanks are also dangerous when > they have been damaged, so they are checked with automatic equipment > to ensure safety. > > I think electric cars would be easier to implement than people > realize, and most of the concerns about limited operating range are > either unimportant, or they could easily be fixed. If the world had > run short of oil back in 1960, you can be sure we would have > implemented electric cars with battery exchanges by 1975, and > everyone would take it for granted. > > - Jed >
