On Wed, Jan 20, 2010 at 12:32 AM, t.piwowar <t...@tjpa.com> wrote: > On Jan 19, 2010, at 8:36 PM, Art Clemons wrote: > >> The truth is that we need some method of rapid charging said batteries on >> the go. Ten minutes charging for let's say 200 minutes of driving would be >> reasonable presently (not much longer than filling up with gasoline), but we >> as a nation don't have the electrical distribution for either battery >> exchange or fast charging, leaving electric cars as something for local >> commuting. >> > > Yes that has been worked out. It was discovered that charging takes so long > because the electrons have to cross a porous barrier and most of the time > they bounce back because they fail to align with the opening in the barrier. > Some guys figured out how to eliminate most of the misses so charging can > take just a few minutes. Their new problem is figuring out how to supply so > much current is such a short time interval. > > Coleman, among others, has a rapid charge screw driver that uses a big capacitor in place of a battery. IMS the trick here is having a similar capacitor in the base charging all the time. They trade the charge in something like 90 seconds. The down side is capacitors aren't as stable as batteries.
<http://www.popularmechanics.com/blogs/technology_news/4223118.html> -- John Duncan Yoyo -------------------------------o) ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************
