HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Blog

Researchers Develop Quick-Charging Li Battery Architecture

NO RATINGS
1 saves
View Comments: Newest First|Oldest First|Threaded View
Elizabeth M
User Rank
Blogger
Re: Dose of reality, please
Elizabeth M   7/17/2014 4:29:27 AM
NO RATINGS
Exactly, Chuck. I really thought of this more of a solution for smaller devices that we'd still like to re-charge super fast.

Charles Murray
User Rank
Blogger
Re: Dose of reality, please
Charles Murray   7/16/2014 7:09:31 PM
NO RATINGS
I agree, Liz. I don't see this making it into vehicles applications any time in the foreseeable future. As Ratsky points out, the numbers don't support that. The current levels would be ridiculously high. But I would imagine there are smaller battery applications where this might make sense.  

Trenth
User Rank
Gold
You fast charge using another big battery pack. not AC.
Trenth   7/16/2014 7:08:01 PM
NO RATINGS
You can use old ecar batteries at the recharge stations to quick charge ecar as fast as you want.  Those used ecar batteries are also connected to the grid and can make money as spinning reserve.  Yes, you might need a heavier charging cable, but 500 amps is handled all the time.  It only requires about  13 mm diameter wire.  Many houses have 500 amp service.  Industry AC feeds go  to MW's and kilo amps.   

 There are already batteries that charge in 15 minutes.  A123's entire line charges that fast.

 http://www.flinkenberg.fi/batteries/material/a123/APR18650M1%20Datasheet.pdf

Elizabeth M
User Rank
Blogger
Re: Dose of reality, please
Elizabeth M   7/16/2014 7:17:40 AM
NO RATINGS
I agree with you, tekochip. I actually wasn't necessarily thinking of this as an EV battery when I wrote the story, even if that is one suggested use for it. I think it could be good for mobile devices, which still take sometimes ages to charge when depleted.

Ratsky
User Rank
Platinum
Re: Dose of reality, please
Ratsky   7/15/2014 1:27:48 PM
NO RATINGS
I agree; however, far too many readers will see the reference to the EV application and think the major stumbling block to "universal" acceptance of EV is on the way to being solved.  It can't be.

tekochip
User Rank
Platinum
Re: Dose of reality, please
tekochip   7/15/2014 1:23:50 PM
NO RATINGS
True, it might not be an EV battery, but there are plenty of uses for a battery that can do an 8C charge reliably.


Ratsky
User Rank
Platinum
Dose of reality, please
Ratsky   7/15/2014 1:14:12 PM
NO RATINGS
Let's do some back of envelope analysis for the EV case.  Let's assume a modestly-sized battery of 25KWH capacity (less than 1/2 the Tesla S).  Assuming full recharge in 10 minutes, means the charger has to provide 150KW output (ignoring efficiency, or a partially-discharged battery).  With a nominal 300VDC battery, the charging current would need to be 500 amp.  As huge as the industry-standard charging plug is, I don't think it's rated to support that current.  The code requirements for the wire would be minimum 1000MCM; that has a minimum OD of 1.3 inches for a SINGLE conductor! Oh, that wire is not exactly flexible and weighs over 3 pounds per foot (again, each conductor) so good luck on trying to plug it in!

Of course, this is completely independent of the battery technology.  It applies to ANY type of supposedly "quick-chargeable"  EV battery.  I guess that "10 minute recharge" will ALWAYS be a pipe dream!  Even with a "wimpy" 10KW battery (like the Leaf) the numbers don't change very much.  Damned physics just keeps getting in the way of progress!

Elizabeth M
User Rank
Blogger
Welcome technology
Elizabeth M   7/15/2014 6:55:32 AM
NO RATINGS
I'm sure heavy mobile device users would really welcome this new type of battery so they don't have to wait to recharge and can recharge more quickly on the go. Of course, there are a lot of new battery chemistries being developed and it will take some time before some of them make it out of the lab and into the commercial sector. This one seems promising, though.

Partner Zone
More Blogs
The trend to automation development software emphasizing configurable objects, versus structured programming, takes a step forward.
Everyone working in MEMS is chasing the ever-elusive golden wafer. But there is a moral to this story, and help is on the way.
Despite pervasive emphasis on “faster, sooner, better,” companies that have multiple design cycles a year only update their approved vendor lists on an annual basis. Maybe it's time to rethink this.
Taking energy from renewable sources, recycling existing energy, and using components that don’t need much energy at all are becoming critical industrial and consumer design criteria.
Texas Instruments has produced an e-book intended to get you up to snuff on the Industrial Internet of Things.
Design News Webinar Series
8/13/2015 11:00 a.m. California / 2:00 p.m. New York
6/25/2015 11:00 a.m. California / 2:00 p.m. New York
6/24/2015 11:00 a.m. California / 2:00 p.m. New York
6/11/2015 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.
Aug 31 - Sep4, Embedded System Design Techniques™ - Writing Portable and Robust Firmware in C
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


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.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service