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Need assistance correctly arranging a 14s6p battery.

esqueue

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Apr 23, 2018
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Need assistance correctly arranging cells for a battery pack that I plan on building. It is a 52 V 14s6p pack using BAK N21700CG-50 21700 cells powering a BBSHD e-bike motor. They will be held in place by a 3D printed 18650 hex spacers that I remixed to fit 21700.. I’ll use 0.15 × 8 mm nickel strips that will be stacked in the first and last groups.

I tried using the online battery arranger, but it kept putting rogue cells by themselves, so I used paint.net. Does anyone have any pictures of a triangle-shaped 14s6p configuration I could clone?


In my drawings:
Blue = Parallel
Green = Series

need-assistance-arranging-cells-for-an-ebike-v0-jfub7bv7q6tf1.jpg
21700 rear.jpg
 
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You know that you've drawn this wrong? As pictured, every two groups are shorted out. I leave it to you to understand what you did.

The arrangement can work, if the series wirng is done right, There''s always going to be places where current gets concentrated in non-symmetric arrays, You don't want to see one strip having to carry current for 3 or more cells. At those points, you can add more nickel, or copper wire..

Many DIY'ers figure 8mil x.15 nickel to be good for 8 amps.,
 
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You know that you've drawn this wrong? As pictured, every two groups are shorted out. I leave it to you to understand what you did.

The arrangement can work, if the series wirng is done right, There''s always going to be places where current gets concentrated in non-symmetric arrays, You don't want to see one strip having to carry current for 3 or more cells. At those points, you can add more nickel, or copper wire..

Many DIY'ers figure 8mil x.15 nickel to be good for 8 amps.,
Lol, thanks. I swear that I didn't make that huge mistake on my pre-corrupt drawing. Thanks, of all things, the main file decided to corrupt itself. I have the flattened version saved in jpg before it got corrupt. (I got this from my reddit post along where my bottlenecked first version of this battery is displayed. )
I'll go ahead and edit out that picture as it is incorrect and dangerous, thanks again.
 
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