A simple thought experiment
If you are charging at a paltry 6.6kW, and inductively charging, and losing a
mere 5% due to "The pain of plugging in" you lose over 300 watts, or 3, 100
watt lightbulbs under your vehicle, making a nice warm place for critters in
the winter.
If you are charging inductively at 19.2kW, and using "lossy" inductive charging
at "only 5%" you have a 960 watt, electric stove eye on _high_ right under the
vehicle, really heating stuff up
Are folks _really_ comfortable with putting electric resistance heaters of 300
to 960+ watts right underneath very expensive vehicles, right next to the
batteries that need active or passive _cooling_?
How long would you hold your hand 5-10 inches away from an electric stove on
high? Would you willingly heat your battery extra, reducing the lifespan?
From: brucedp5 via EV <ev@lists.evdl.org>
To: ev@lists.evdl.org
Cc: brucedp5 <bruce...@juno.com>
Sent: Sunday, October 22, 2017 1:09 AM
Subject: [EVDL] How important is the ability to recharge w/o plugging in a
cord?> Does wireless matter?
https://www.greencarreports.com/news/1113306_how-much-does-wireless-charging-matter-for-electric-cars-poll-results
How much does wireless charging matter for electric cars? Poll results
Oct 17, 2017 John Voelcker
[images
https://images.hgmsites.net/med/2018-bmw-530e-iperformance-wireless-charging_100606443_m.jpg
2018 BMW 530e iPerformance wireless charging
]
The announcements by BMW and Mercedes-Benz that they would offer wireless
charging as an option next year raise a question for electric-car advocates.
How important is the ability to recharge a vehicle without plugging in a
cord?
On the pro side, wireless charging may be easier for owners and drivers, who
don't have to remember to plug in the charging cable when they park.
As envisioned by makers of inductive charging equipment (as it's formally
known), semi-autonomous cars of the future would even know how to position
themselves over the charging mat.
That means drivers would be relieved of the need to ensure the car is in
exactly the right place to enable the two coils—one in the mat on the
ground, the other on the undercarriage of the car—to align.
Such self-driving features are likely to be introduced first at the top end
of the market, so it makes sense that the two German brands will offer the
option on pricey plug-in hybrid sedan models.
On the other hand, purchase and installation of wireless charging equipment
isn't cheap, currently running several thousand dollars.
That includes buying and installing the charging mat, which may require
trenching for the power cable (depending on local building codes) and then
installing the coil underneath the car itself.
Most electric-car owners seem to feel that plugging in a car to charge isn't
that big a hassle. Charging stations for personal use, meanwhile, now run
from $400 to $1,000, and every plug-in car comes with a charging port built
in.
We surveyed our Twitter followers to see how important they thought wireless
charging would be for plug-in electric vehicles in the future.
The results came down pretty firmly on the "nice to have but not a
game-changer" side: 45 percent called wireless charging "a nice option."
Another 35 percent thought it wasn't necessary, at least for them, choosing
the "Plugs are all you need" response.
Just 14 percent of respondents felt that wireless charging was "the best!"
and the remaining 6 percent felt it would be a low-volume option on cars of
the future.
We take away from this pretty much what we'd expected: wireless charging may
be an appealing option for some buyers, but it's probably not going to have
a huge effect on electric cars in general.
[© 2017 Green Car Reports]
For EVLN EV-newswire posts use:
http://evdl.org/evln/
{brucedp.neocities.org}
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