HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Greg Stirling
User Rank
Platinum
Long Overdue...
Greg Stirling   7/28/2011 6:03:09 PM
NO RATINGS
Yes, long overdue - Power management for Lithium Ion batteries, that is.  My laptops, some brand new, in 'Stand-By' mode sometimes get so hot I can barely touch the back of the unit.

So the laptop is apparently converting stored energy from the battery into Heat!  

I have to wonder, what the heck is this computer doing or attempting to do, that is so important, to generate all this heat, when I just told it to go into Standby...

So yes, these new chips and these new designs are welcome improvements...

BobGroh
User Rank
Platinum
Lithium Ion batteries and thermal runaway
BobGroh   7/28/2011 10:49:43 AM
NO RATINGS
As an electrical engineer (retired) and a casual flier of electric model airplanes, I have closely watched the development of Lithium Ion battery sources for models over the last 10 to 15 years. Lithium Ion batteries have finally made the dream of electric powered model airplane flight possible and, today, many of those in the hobby have switched over totally (I know that I have - no more glow fuel for me!). 

Of course, there were some problems and the fire issue was (and still is) a very serious concern. The risk has been mitigated to some extent with better chargers, improved battery construction, smarter control devices between the battery and the motor(s), the use of different battery materials and a strong education campaign by the model industry.

There is still a ways to go and providing 'smart' batteries with more integrated control and safety circuits might be the way to proceed for the model industry. The downside is, of course, the cost increase for the battery pack and a question of standarization.

Overall an interesting marketing and engineering problem in a rapidly evolving field.

Beth Stackpole
User Rank
Blogger
Re: Batteries rule
Beth Stackpole   7/28/2011 8:50:04 AM
NO RATINGS
Batteries are definitely the talk of the town given people's love affair with all-things electronics. Put this one in the out-there bucket: I just read about a Stanford University research team which invented a totally transparent lithium-ion battery because they want Apple to invent a see-through iPhone. Who knew?

Alexander Wolfe
User Rank
Blogger
Batteries rule
Alexander Wolfe   7/28/2011 7:58:47 AM
NO RATINGS
One clearly gets a sense, from all the stories recently on batteries, that portable power sources have become a gating factor for many of the things we'd otherwise be able to do easily. I'm not just talking about electric vehicles, where batteries are clearly THE gating factor. This applies to all manner of miniaturized electronics, as well as systems situated in hard to get at places (where it's difficult to recharge). Rising alongside all the work on batteries, we're seeing a ramp in energy capture technologies. I guess it's all part of the alternative energy arena. Hey, can I call it alt.eng?



Partner Zone
Latest Analysis
From home enthusiasts to workers on the manufacturing floor, everyone's imagination is captured by the potential of 3D printing. Prototyping, spare parts creation, art delivery, human organ creation, and even mass product production are all being targeted as current and potential uses for the technology.
ABI Research, a firm based in the UK that specializes in analyzing global connectivity and other emerging technologies, estimates there will be 40.9 billion active wirelessly interconnected “things” by 2020. The driving force is the usual suspect: the Internet of Things.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
Solar and wind energy are becoming more viable as a source of energy on the electric grid. For decades, the major drawback to solar and wind was that they’re temperamental. A cloudy day kills solar and a still day renders the wind turbines useless. Automation tools, however, are providing a path to help these renewables become practical.
In honor of Earth Day, the National Security Agency has launched the STEM Recycling Challenge in Maryland schools to encourage kids to think about where the garbage they throw out every day actually goes. The agency has also introduced “Dunk,” a muscular blue cartoon recycling bin wearing shorts and sneakers.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 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.
Apr 20 - 24, Taking the Internet of Things to the Cloud
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.
Last Archived Class
Sponsored by Proto Labs
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