Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 3 / 3
JanineLove
User Rank
Blogger
Really a solution?
JanineLove   9/30/2013 1:47:30 PM
NO RATINGS
I may be off topic a bit here, but the bit in the article about the national media got me thinking about the EV radio commercials I've been hearing. What no one seems to be addressing is where the electricity will come from? Aren't we just trading one problem for another here? Feel free to set me straight...

Duane Benson
User Rank
Blogger
Re: Nice goal, but...
Duane Benson   9/30/2013 12:54:42 PM
NO RATINGS
You've got a good point. I'd agree that the biggest challenge is charging time, but range certainly ranks up there. Fast charging would offset some of the problems with limited range, but at some point, range becomes too short to be practical. That's where thos 4-5X batteries will come in handy - if we can shove that many electrons around fast enough.

AZskibum
User Rank
CEO
Re: Nice goal, but...
AZskibum   9/30/2013 11:41:12 AM
NO RATINGS
Some of the promising new anode materials like silicon nanowires could make this an achievable goal by providing 4-5x the charge storage in the same battery volume.

The biggest challenge is not range, but charging time. Those future batteries with 4-5x the capacity will also require 4-5x the charging current to charge in the same amount of time as today's batteries -- and that charging time is already too long for EV purposes.

Duane Benson
User Rank
Blogger
Nice goal, but...
Duane Benson   9/30/2013 11:29:31 AM
NO RATINGS
EV batteries won't have to exactly reach the range and energy density of a tank of gas, but they'll have to meet a few pretty hard requirements to be successful.

A good analogy might be the smart phone. Before smart phones, we might expect a week out of a single phone charge. With a smart phone, we have to live with charging every day. However, the increase in functionality made the trade off worthwhile (mostly).

An electric car will need to do a similar thing. It has to have a big enough benefit - something that liquid fuel cars don't have - to make the trade offs worthwhile. I don't see that on the horizon any time soon.

a 200 mile range is good for a commuter car. That's enough range to be able to make a daily 50 mile (total) commute without fear of running our of battery power. It's not realistic, however, in my opinion, for anything other than around town use.

<<   <   Page 3 / 3


Flash Poll
Top Comments of the Week
Like Us on Facebook
EE Times on Twitter
EE Times Twitter Feed

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
Max Maxfield

Are Today's Designs Bound by the Constraints of Yesteryear?
Max Maxfield
25 comments
As part of my ongoing Pedagogical and Phantasmagorical Inamorata Prognostication Engine project (try saying that 10 times quickly), I'm working with Jason Dueck from Instrument Meter ...

Jolt Judges and Andrew Binstock

Jolt Awards: The Best Books
Jolt Judges and Andrew Binstock
1 Comment
As we do every year, Dr. Dobb's recognizes the best books of the last 12 months via the Jolt Awards -- our cycle of product awards given out every two months in each of six categories. No ...

Engineering Investigations

Air Conditioner Falls From Window, Still Works
Engineering Investigations
2 comments
It's autumn in New England. The leaves are turning to red, orange, and gold, my roses are in their second bloom, and it's time to remove the air conditioner from the window. On September ...

David Blaza

The Other Tesla
David Blaza
5 comments
I find myself going to Kickstarter and Indiegogo on a regular basis these days because they have become real innovation marketplaces. As far as I'm concerned, this is where a lot of cool ...