HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
News
Electronics & Test

Lithium-Ion Batteries Emerge as Possible Culprit in Dreamliner Incidents

< Previous Page 2 / 2
View Comments: Oldest First|Newest First|Threaded View
Page 1/4  >  >>
Cabe Atwell
User Rank
Blogger
fired
Cabe Atwell   1/17/2013 3:20:15 PM
They obviously overlooked the battery design slightly in the initial stages of development. At least no one was hurt, but I am sure Boeing will fire a few on the battery team. With all the battery exploding incidents from the past, I am surprised that wasn't a concern for the engineering team. However, it could have been a manufacturing error.. Time will tell.

C

apresher
User Rank
Blogger
Dreamliner Batteries
apresher   1/17/2013 5:26:21 PM
Chuck, Very interesting report.  It's amazing how with a system as complex as the Dreamliner, there are a very large number of unknown variables to resolve.  Tough for the Boeing engineers who are moving a project of this scope into the marketplace, especially in a spotlight as bright as this situation. 

Charles Murray
User Rank
Blogger
Re: Dreamliner Batteries
Charles Murray   1/17/2013 5:43:49 PM
I agree, Al. The spotlight is very bright in this case. I initially wondered if the bright spotlight might be part of the problem here. But the succession of battery overheating incidents in January alone is hard to ignore.  

Jack Rupert, PE
User Rank
Platinum
Re: Dreamliner Batteries
Jack Rupert, PE   1/17/2013 10:02:32 PM
It's interesting that this is the same technology that Ford just standardized on.  While the article mentions the cooling systems used in autos and some of the other design components, I can't help but wonder what can happen a few years down the road in vehicles that are not properly maintained...whatever the definition of "properly" may be with respect to battery safety.

gafisher
User Rank
Gold
Re: Dreamliner Batteries
gafisher   1/18/2013 9:39:12 AM
Lithium-Ion chemistry is also used in the Chevy Volt, the Fisker and other electric vehicles (but notably not in the Toyota Prius).  Li-ion is a very energetic chemistry, which is necessary to pack so much energy in a limited volume.  Gasoline is even more efficient, so much so that it can explode in situations where Li-ion batteries would only burn.

SystemsGuy
User Rank
Iron
Cooling at 30,000 ft.?
SystemsGuy   1/18/2013 9:39:44 AM
NO RATINGS
How hard can it be to cool batteries when the outside temperature at 30,000 ft is below (-60F) ?

ChasChas
User Rank
Platinum
Re: Dreamliner Batteries
ChasChas   1/18/2013 9:44:45 AM
I look at that tight battery box and think - you cannot cool an adiabatic heat source with it's own energy - inside of the system.

davemiga
User Rank
Iron
What type of lithium ion batteries?
davemiga   1/18/2013 9:47:51 AM
The description of the meltdown seems that they might be using lithium cobalt, not a good design choice if that is the case. Lithium iron phosphate LiFeP04 would be the only safe choice. Anyone know what Boeing used?

Charles Murray
User Rank
Blogger
Re: What type of lithium ion batteries?
Charles Murray   1/18/2013 9:53:22 AM
Very good point, davemiga. I've heard -- unofficially -- that it was cobalt, but haven't been able to verify it. And, yes, a cobalt chemistry is slightly more susceptible to overheating, although all lithium-ion chemistries are on the edge (with the possible exception of the so-called "nanophophate" chemistries).

ScotCan
User Rank
Platinum
Re: fired
ScotCan   1/18/2013 9:53:49 AM
Liaison engineers have commented previously that Boeing may have done too much too soon with this aircraft. 

We have had lithium systems problems in E scooters where thermal overload shut down the 48V system via the batteries management software. We concluded that heavy current draw during acceleration was causing the problem and tried conditioning that by tweaking the controller 

Page 1/4  >  >>
Partner Zone
Latest Analysis
Hacking has a long history in the movies, beginning with Tron and War Games and continuing through The Girl with the Dragon Tattoo.
In a move that strengthens its 3D design business, Stratasys continued a 15-month buying spree this week by announcing its plan to acquire GrabCAD, a provider of a cloud-based collaboration environment for engineers.
Feature-advantage-benefit could help engineers in how we approach design problems, how we sell our ideas to management, and how we market ourselves when it comes to jobs.
Many diverse markets take advantage of semiconductor IP; so many that no one can recite the entire list without leaving off several. So why do we track all the vertical markets? They all have a unique set of requirements and value attributes differently. One major vertical market segment is automotive.
Adam Berger hacked a computer keyboard into a mini key-tar to play with his band.
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
6/25/2014 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