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

NTSB: Short Circuit Caused 787 Battery Fire

NO RATINGS
View Comments: Oldest First|Newest First|Threaded View
<<  <  Page 5/5
curious_device
User Rank
Gold
Battery mess.
curious_device   2/19/2013 4:30:08 PM
NO RATINGS
I saw a graphic that Boeing was going to stick a vented containment around the existing battery box.  I doubt that will satisfy the FAA and NTSB. Aside of the whole qualification time lag, why wouldn't they swap the Lion battery units with NiMH-based assemblies?  Since they seem to have the space to put a box around the existing box, they could definitely go to a lower energy density battery technology.

Connector
User Rank
Iron
Cause or Effect
Connector   2/20/2013 12:49:30 AM
NO RATINGS
Of course, an active cooling system will add weight and take up space.  That is probably why Boeing chose not to incorporate it.

g_ost
User Rank
Gold
Re: Battery mess.
g_ost   2/21/2013 7:55:39 AM
NO RATINGS
"The gaps between the cells will be increased." as immediate solution will allow a breathing space for further improvements. SAFT mentions in their battery manual:

"Un espace de 30 à 50mm doit être laissé libre sous les modules pour permettre la désoperculation des éléments en cas de problème."

Google translation - I love this tool

A space of 30 to 50 mm must be left in the modules to allow uncapping elements in case of problems.

The problem still exist but this short solution will reduce the cascade effect in case of a cell failure and will improve the local cooling - trough enhanced sufrace contact with  the air environment.

Charles Murray
User Rank
Blogger
Re: Battery mess.
Charles Murray   2/21/2013 1:12:07 PM
NO RATINGS
Another story came out yesterday, saying that Boeing intends to provide more space between cells. It's worth mentioning, however, that Boeing's spokespeople are not commenting, so we don't know for sure.

http://www.reuters.com/article/2013/02/20/us-boeing-dreamliner-battery-idUSBRE91J0VG20130220

<<  <  Page 5/5
Partner Zone
Latest Analysis
Take a look through these film and TV robots from 1990 through 1994.
The Soofa is an urban smart bench that provides mobile device charging as well as collects environmental information via wireless sensors.
Sciaky, provider of electron-beam additive manufacturing (EBAM) services, will start selling these machines commercially in September. The company has used its EBAM 3D printing technology for making very large, high-value, metal prototypes and production parts for aerospace and defense OEMs.
At this year’s Google I/O, the spotlight was pointed on gender inequality in the high-tech industry. Google has established a new initiative that it hopes will even out the playing field, Made w/Code. Part of this initiative will fund free online courses in basic coding.
Self-driving vehicle technology could grow rapidly over the next two decades, with nearly 95 million “autonomous-capable” cars being sold annually around the world by 2035, a new study predicts.
More:Blogs|News
Design News Webinar Series
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
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Aug 4 - 8, Introduction to Linux Device Drivers
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: August 12 - 14
Sponsored by igus
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