HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Blogs
Electronic News & Comment

Putting a Chill Into Battery Thermal Runaway

NO RATINGS
View Comments: Oldest First|Newest First|Threaded View
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?

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?

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.

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...

Partner Zone
More Blogs from Electronic News & Comment
There's good news and bad news regarding the sub-systems of today's late-model vehicles. The good news is that new engines and transmissions are more trouble-free than in the past. The bad news is that the infotainment and DVD players are still prone to be "buggy."
Government fines and recalls are heightening the need for automakers to adopt more safety standards and software verification techniques, experts at EE Live said this week.
The coming era of self-driving cars will call for a major change in engineering culture, an embedded design expert said this week.
For decades, the corporate path to the chief executive's office has often passed through engineering. Automotive, computer, electronics, and oil companies have frequently drawn their leaders from the engineering ranks.
The Texas Motor Speedway has flipped the switch on a high-definition video board that uses 14 million LEDs, weighs more than 200,000 pounds, and is 80% larger than the Dallas Cowboys' world-renowned scoreboard.
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


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: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service