Peri Hartman via EV wrote:
Well, it doesn't have to be called a kwh meter. I could be called a
energy-remaining or, to use the term incorrectly, a power-remaining meter.
Or a "fuel gauge". :-)
Given the low cost of graphics displays, how about an icon that looks
like a battery? Empty (0% state of charge) has all the pixels inside it
off. No energy left; you can't drive.
As you charge it, the pixels light up, one-by-one. The icon could easily
be 100x100, so there are 10,000 pixels in there. You could easily see
the pixels being added as you charge. The charge rate is shown by the
number of pixels being added per second.
When the battery is full, most (but not all) of the pixels are lit. The
amount that fills indicates how much your battery can hold in its
present condition. That will change with temperature, as the pack ages,
or gets damaged, etc.
As you drive, you can see the pixels draining out of it. Slowly, or in a
mad rush if you're driving fast!
All done without units, so it won't confuse the "ignerunt masses". Just
like a standard gas gauge; it has no units (no gallons, no KWH). But
obviously, you could have an option that shows KWH numbers as well.
--
Results! Why man, I have gotten a lot of results. I know several
thousand things that won't work. -- Thomas A. Edison
--
Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm
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