HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 3/5  >  >>
vandamme
User Rank
Silver
Re: Standard with big results
vandamme   10/25/2012 8:19:59 PM
NO RATINGS
I don't need to recharge at home in ten minutes; 100 minutes is fine, or more likely 8 hours, when the electricity is cheaper. A slow charge is better on the batteries, too.

bobjengr
User Rank
Platinum
Re: Standard with big results
bobjengr   10/25/2012 4:23:53 PM
NO RATINGS
 I also am amazed at the length of time to develop (or publish) the standard.  Looks to me like the automotive industry would begin with a viable standard and design around that or at least plan on their product being tested to it.   I am not in the automotive industry so I don't really know the ins and outs of the industry but it does seem strange. 

CharlesM
User Rank
Silver
Re: Standard with big results
CharlesM   10/25/2012 3:50:33 PM
NO RATINGS
10 minutes get's us to 80% charged. How long will it take to get to 100%?

You typically would not fast charge past 80%. You'd revert to Level 1 or 2, as it is then approaching the top-off region.  At level 2 that would typically add about 24 miles of range per hour for a 6.6kW on-board charger. 

Also, this is not compatible with Teslas.

tekochip
User Rank
Platinum
Re: Standard with big results
tekochip   10/25/2012 2:50:49 PM
NO RATINGS
80% is pretty good and should get you to the next charge station.

joseph.holmes
User Rank
Iron
Totally Pedestrian Question...
joseph.holmes   10/25/2012 12:15:43 PM
NO RATINGS
So, I'm not an Engineer, so, this may be an incredibly ignorant question, but, from a consumer (who is *extremely* interested in getting an electric car) standpoint I wonder about compatibility. The article mentions that the quick charging stations won't be available for homes (which is fine), but also mentions that the hardware will have two extra pins... will the interfaces still be able to be used with home-based charging stations?

Charles Murray
User Rank
Blogger
Re: Standard with big results
Charles Murray   10/25/2012 12:01:39 PM
NO RATINGS
Good question, Lardo140. I'll try to get an answer for you (or maybe one of our readers knows the answer). The last 20% takes a long time because the charge rate slows down at that point. Because these battery packs are so expensive, everyone is afraid of damaging them through overcharging.

GeorgeG
User Rank
Platinum
Re: Standard with big results
GeorgeG   10/25/2012 11:22:41 AM
NO RATINGS
Of course you mean most homes in North America, not France, for example. In any case, a home either has a 24 kVA or 48 kVA power entry. A full charge is perhaps 16 kWh. The math says 20 minutes but likely more if you want to keep the lights on or less if you have storage. But everything has to start somewhere. Setting the vehicle capability high in a standardized way permits standards to be developed. 10 minute charging implies 96 kVA at the vehicle and ~10 kWh of storage in a residential charger. Or, houses could be supplied with 240/120 3-phase (wild phase) power, like many commercial buildings, increasing the service to 83 kVA for the cost of one wire. But in the real world, most people don't drive around running on empty. Nor is their average time parked in the drive less than 30 minutes. Obviously for PHEVs - you get what you get based on time available but full charge is only 4-10 kWh so 10 minute charge at home may just be doable.                         

GeorgeG
User Rank
Platinum
Re: Still burning coal
GeorgeG   10/25/2012 10:52:59 AM
NO RATINGS
You don't have to burn any coal. No one is holding a gun to your head. It's a concious decision on your part to do so. Each and every individual American uses 3.4 tons of coal each year. Good choice. There are plenty of better energy sources. The only excuse for coal is that it's cheap mostly because they are exempt from environmental regulations which everyone else must meet and because no one put a value on the land use (now over 200 mountains and 15000 miles of waterways obliterated). At the current rate, in your lifetime you personally will have destroyed 2.5 acres of land and along with 250 friends killed one human. Nice one.      

Lardo140
User Rank
Iron
Standard with big results
Lardo140   10/25/2012 10:09:05 AM
NO RATINGS
Another question; Okay... 10 minutes get's us to 80% charged. How long will it take to get to 100%?

ChriSharek
User Rank
Gold
Re: Still burning coal
ChriSharek   10/25/2012 10:02:22 AM
NO RATINGS
At least this coal burning is domestically made energy rather than part of the $37 Billion we send each month to foreign countries that want to kill us.  The implementation of EVs and PHEVs could have profound impacts on our debt while creating thousands of new jobs in the energy production and distribution related fields. 

<<  <  Page 3/5  >  >>


Partner Zone
Latest Analysis
Released on September 19, 2014, this 5.5 inch screen iPhone is the larger version of the iPhone 6, whose teardown follows tomorrow.
A Design News course on field programmable gate arrays (FPGAs) should help engineers who are considering the technology for their upcoming designs.
In many engineering workplaces, there’s a generational conflict between recent engineering graduates and older, more experienced engineers. However, a recent study published in the psychology journal Cognition suggests that both may have something to learn from another group: 4 year olds.
CTC releases EtherCAT Master module for high-performance control of networked servos, stepping motors, and I/O devices.
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
More:Blogs|News
Design News Webinar Series
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 22 - 26, MCU Software Development – A Step-by-Step Guide (Using a Real Eval Board)
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: September 30 - October 2
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service