61–70 of 83 posts
Earlier quoted context omitted.
Isn't that the type of cell the 777 use(s/d)? I think Elon Musk very addressed the issue pretty well. http://www.flightglobal.com/news/articles/elon-musk-boeing-7... "Large cells without enough space between them to isolate against the cell-to-cell thermal domino effect means it is simply a matter of time before there are more incidents of this nature," he adds. "Moreover, when thermal runaway occurs with a big cell,…
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Seems like there is a lot of room for improvement? Reducing the sheer number of casings on individual cells would radically reduce weight/volume. Then with less groups of cells you could actually have the BMS monitor them like my lifepo lithium battery for bicycle.
I'm rebuilding ThinkPad X200 9-cell this weekend that is filled with 18650s and repaired a PBX about 15 years ago that had them in it so they appear literally everywhere.
Interesting to compare this to the ford fusion battery[1], which uses clever construction to prevent a technician from being exposed to high voltages during construction and teardown. [1] http://www.etotheipiplusone.net/?p=3109
Seems like there is a lot of room for improvement? Reducing the sheer number of casings on individual cells would radically reduce weight/volume. Then with less groups of cells you could actually have the BMS monitor them like my lifepo lithium battery for bicycle.
It might not be that the number of layers makes it fundamentally expensive.But instead the design and manufacturing might not be yet very optimized.
Seems like there is a lot of room for improvement? Reducing the sheer number of casings on individual cells would radically reduce weight/volume. Then with less groups of cells you could actually have the BMS monitor them like my lifepo lithium battery for bicycle.
I'm pretty sure the casings are there for fire isolation
If a cell burns it is going to take out its neighbors anyway.
Or they could start to do something similar to LiFePo4 which will not burn.
Earlier quoted context omitted.
Hey bigiain! I'm the one who initiated the archive against the page(s) in question. While I understand copyright is important, I also believe in the preservation of digital history on the internet. The page in question isn't password protected, nor were the images prevented by the Internet Archiver's archive process from committing the page to their archive. The author still receives their attribution, and The Archiv…
The copyright owners wishes are very well explained: "Images I post in this thread and my related commentary are posted and published by me, the original photographer. All copyrights and all other rights reserved. These images may not be copied or otherwise distributed outside of this forum without my express permission." To me, it pretty clear that initiating an archive against that page was explicitly ignoring the…
So for practical reasons it is probably best to claim both copyright on the page and to set up robots.txt to specifically forbid those pieces that you don't want spread around from being indexed/archived.
In the eyes of the law probably only the copyright bit matters.
Earlier quoted context omitted.
Hey bigiain! I'm the one who initiated the archive against the page(s) in question. While I understand copyright is important, I also believe in the preservation of digital history on the internet. The page in question isn't password protected, nor were the images prevented by the Internet Archiver's archive process from committing the page to their archive. The author still receives their attribution, and The Archiv…
The copyright owners wishes are very well explained: "Images I post in this thread and my related commentary are posted and published by me, the original photographer. All copyrights and all other rights reserved. These images may not be copied or otherwise distributed outside of this forum without my express permission." To me, it pretty clear that initiating an archive against that page was explicitly ignoring the…