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Originally Posted by leahbeatle
Oh, sorry, lost track of my subject. On the subject of cold weather and batteries, I was poking around on google scholar and found this article, which seems to be exactly on point:
http://www.aes.nu/publications/2002-01-1975.pdf
The conclusion is that internal core heating, using resistance heating, is by far the best way to warm a hybrid battery in cold weather. It's a 2002 article, so surely it's been implemented by now. Anyway, if you wanted to read about the scientific details, here is some background for you, although I suppose it may not be up-to-date, as it doesn't involve the most recent hybrids. |
aw, shucks, ma'am... i thought you were just picking on me....
as for the article... LOL... they got a grant to do that research, right?
ok, so you've got a hybrid or electric vehicle, and they're worried about the electric battery's efficiency at cold temperatures? so they're going to slap 115 amps of 60-Hz AC into a 13-amp-hour battery to heat it up so it can be "more efficient"???
here are two
free, non-US-government-subsidized "from
this planet" solutions: 1) if the battery can start the gas engine, start the gas engine and let it slap a bunch of watts onto the battery
by charging it! just might warm it up a tad... and 2) just as several folks here have worried about the warmup time of the internal combustion engine in their hybrids, slap a block-heater on the engine and then put an electric heating pad under the batteries, too! keep 'em both warm overnight, jump in, hit the go button, and drive away!
c'mon... haven't there been enough hybrid drivers who turn off the AC so it doesn't drain electric power from the hybrid system and lower their hypermileage?! and these guys are talking about kilowatts of power for 3-6 minutes just to heat the battery so it's more "efficient"???
ivory tower, imnhsho... swatting a fly with a nuclear cannon.
c'mon..... if the problem is slow warmup before the heater puts out, put an engine-block heater in. if it's battery efficiency... hey, wait a minute... has ANYONE here gotten into their hybrid in ANY kind of weather and NOT had the gas engine (ICE) start up immediately when needed? if no, batteries are not part of the problem.
(kinda touchy, isn't he, LeahB...)??
