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Pack Design Question
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(03-01-2019, 03:29 PM)Ebarnett Wrote: Thanks to all who readily share their experience and knowledge.  I have a couple of pack design questions.  After reviewing hundreds of video and forum posts, I have decided initially on creating 4 system packs consisting of 7S10P using new Samsung 30Q cells (3000ma @ 3.6v and Max continuous discharge current of 15A).  I will then parallel these system packs together for what I believe to be a 30A at 25.2v. = 756Wh/pack x 4 packs = 3024Wh per entire system.   The system will need to provide 30A max power for short periods but primarily the system will be only supplying <10A continuous for the application I have in mind.
 
First question I have is,  I would like to know if fusing individual cells to nickel strips (.2mm x 8mm) instead of copper wire bus bars will be a problem for the load and size mentioned above.  I realize the IR of nickel and cost is not as good as copper but it’s easier to work with for me.
 
Second question I have is, how to calculate the C rating for the cells in my application defined above.  I believe the C rating of the cells above would be C5.  How do I determine what the amp load each cell is going to be subjected to?  I am thinking this is the way it would work but maybe I’m wrong. 
30A Load / 4 parallel system packs  = 7.5A per system pack / 10 cells in parallel per pack= .75A per cell.  Would this equate to a C .15 rating for each cell?
 
Thanks in advance for any comments and suggestions.

I have come out a design which maybe close to what you want... just need some DIY.
You can use 2 OFPPK kit to combine to become 8S 16P or 7S 16P configuration. 
http://bit.ly/416OFPPK
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Messages In This Thread
Pack Design Question - by Ebarnett - 03-01-2019, 03:29 PM
RE: Pack Design Question - by daromer - 03-01-2019, 03:37 PM
RE: Pack Design Question - by Ebarnett - 03-01-2019, 03:57 PM
RE: Pack Design Question - by Wolf - 03-01-2019, 04:23 PM
RE: Pack Design Question - by Ebarnett - 03-01-2019, 04:48 PM
RE: Pack Design Question - by Wolf - 03-01-2019, 06:11 PM
RE: Pack Design Question - by Ebarnett - 03-01-2019, 06:17 PM
RE: Pack Design Question - by Dan Lim - 03-02-2019, 05:47 AM
RE: Pack Design Question - by Ebarnett - 03-03-2019, 03:00 PM
RE: Pack Design Question - by Wolf - 03-03-2019, 04:02 PM

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