HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 2/2
Beth Stackpole
User Rank
Blogger
Re: Future capacity?
Beth Stackpole   7/21/2011 3:41:57 PM
NO RATINGS
Is there some kind of Moore's law governing capacity in batteries as there is in processor design? Perhaps a technology that's the equivalent of multi-core for batteries? It would seem there would have to be as devices get smaller malland ser and as as people become ever more reliant on them on a 24/7 cycle. I don't see that demand dissipating any time soon.

Ivan Kirkpatrick
User Rank
Platinum
Thermal Management
Ivan Kirkpatrick   7/20/2011 1:52:09 PM
NO RATINGS
The problem before was in cotnrolling the batteries themal characteristics.  Sometimes if the battery was being discharged too rapidly the temperature rose and created the issues already noted.  Smae thing can happen when charging the batteries.  I think the solution was in the modification of the chemistry involved.

In terms of energy storage the total energy stored is getting interesting.  And any uncontrolled release of that energy has to be dealt with in a safe manner.  consider a stick of dynamite.  I am not sure exactly how much energy it stores but when it is released suddenly it has dramatic effects.  If that same energy could be controlled and released gradually in the form of electric current it would make a fine storage device but probably not rechargeable.

If one had a Lithium-Ion type battery with the same energy storage potential as a comparable size stick of dynamite it would certainly warrant very careful attention to catastrophic failure modes. 

As I recall from chemistry class, the most energetic chemical reaction is the conversion of H to H2.  That is Monatomic Hydrogen binding with another free Hydrogen into diatomic Hydrogen, H2.  I believe it also liberates an electron.  Probably not possible to make a battery out of it.

Douglas Smock
User Rank
Platinum
Safety Concerns
Douglas Smock   7/20/2011 10:24:58 AM
NO RATINGS
What are the safety issues with the laminate-style lithium polymer batteries? It seemed that there was a lot of buzz a couple years ago about potential fires or even small explosions with lithium batteries, but I don't hear much about it anymore. Are these issues addressed in the polymer technology, laminate constructions or just in more robust housings? (Or not at all.)

 

 

Alexander Wolfe
User Rank
Blogger
Future capacity?
Alexander Wolfe   7/20/2011 10:17:49 AM
NO RATINGS
You raised the big battery elephant in the room question at the end, Chuck, about capacity. Will capacities rise to 4.2A-hr or 4.4A-hr? This of course relates directly to product weight. If capacities don't rise, eventually (soon, actually) portable devices relying on these things will hit a design wall, and the heavier devices will end up being performance-impaired.

<<  <  Page 2/2


Partner Zone
Latest Analysis
The phablet wars continue. Today we welcome the Nexus 6 -- a joint collaboration between Google and Motorola.
According to a study by the National Institute of Standards and Technology, one of the factors in the collapse of the original World Trade Center towers on Sept. 11, 2001, was the reduction in the yield strength of the steel reinforcement as a result of the high temperatures of the fire and the loss of thermal insulation.
If you have a Gadget Freak project, we have a reader who wants to make it. And not only will you get your 15 minutes of fame on our website and social media channels, you will also receive $500 and be automatically entered into the 2015 Gadget Freak of the Year contest.
Robots are getting more agile and automation systems are becoming more complex. Yet the most impressive development in robotics and automation is increased intelligence. Machines in automation are increasingly able to analyze huge amounts of data. They are often able to see, speak, even imitate patterns of human thinking. Researchers at European Automation call this deep learning.
Thanksgiving is a time for family. A time for togetherness. A time for… tech?
More:Blogs|News
Design News Webinar Series
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
11/6/2014 11:00 a.m. California / 2:00 p.m. New York
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.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.
Dec 1 - 5, An Introduction to Embedded Software Architecture and Design
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.
Last Archived Class
Sponsored by Littelfuse
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