HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 5/5
richnass
User Rank
Blogger
Re: Cause or Effect
richnass   2/12/2013 11:01:31 AM
NO RATINGS
tekochip, if I understand where you are going, is it the blame of the battery itself, or the electronics surrounding the pack. I'd be surprised if anyone takes "credit" for this mishap.

tekochip
User Rank
Platinum
Re: Cause or Effect
tekochip   2/12/2013 10:00:30 AM
NO RATINGS
I understand that, but did the cell fail from being overheated, or did it become hot because it had failed?  The folks at Tesla and others have said that this type of pack requires active cooling.  If that's true will an overheated cell fail by shorting, or was the cell poorly constructed, shorted and then caused the thermal runaway?

g_ost
User Rank
Gold
Re: Cause or Effect
g_ost   2/12/2013 9:37:37 AM
NO RATINGS

G-Yuasa at NASA Aerospace Battery Workshop 2011/November 15, 2011

https://batteryworkshop.msfc.nasa.gov/presentations/04_Qualification%20of%20GS%20Yuasa%20Large%20Format%20Li-ion%20Cells%20for%20Space.pdf

the cell presented is not the one from 787 but the technology should be similar.

The 787 battery pack has 8 cells serial hard connected. The cells can not be individual switched off in case of failure. The damaged cell still getting power from the good cells and aggravate the issue.

tekochip
User Rank
Platinum
Cause or Effect
tekochip   2/12/2013 8:29:25 AM
The classic question.  Was it a manufacturing problem in the battery pack that caused the cell to short or did the pack overheat and then a cell failed, as so many people looking from the outside have suggested?

<<  <  Page 5/5


Partner Zone
Latest Analysis
Why would the biggest connector company in the world design and build the first fully functional 3D-printed motorcycle? To show TE Connectivity's engineers what the technology can really do in making working load-bearing production parts, and free up their thinking when approaching design problems.
This is the story of a robotic ball clever enough to inspire the team behind the new Star Wars film.
The enhanced ST8 includes new functionality designed to help users accelerate design speed and improve the user’s ability to leverage synchronous technology. The update offers greater flexibility in choice of platform and purchasing options, according to the company.
“How can European standards affect me, especially since I only use machines built in the US?” This is a common question, and one way to answer this is to look at how machine safety is enforced, where the information comes from, and how well you can prove you followed the regulations.
A new process controller delivers smartphone-type functionality to chambers, furnaces, ovens, and industrial machinery needing thermal control.
More:Blogs|News
Design News Webinar Series
5/21/2015 11:00 a.m. California / 2:00 p.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
6/3/2015 8:00 a.m. California / 11:00 a.m. New York
6/11/2015 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.
Jun 8 - 12, Everything You Ever Wanted to Know about Filters
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.
Next Course June 2nd-4th:
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