Fitting 264 cells in a Qulbix 140r, how can I do this, it's not wide enough!?? Please help!

General Discussion about electric bicycles.
Post Reply
mbgjt1   10 W

10 W
Posts: 79
Joined: Sep 22 2020 11:50pm

Fitting 264 cells in a Qulbix 140r, how can I do this, it's not wide enough!?? Please help!

Post by mbgjt1 » Jan 10 2021 6:26pm

Hello all.

I am looking at starting to build my battery pack. I will be using VTC6 Sony cells, 22s12p to give a total of 360 battery amps, so 264 cells in total...

Now, the Qulbix 140 frame has a battery compartment which fits a MAXIMUM battery size which is:
Length:Width:Height = 320mm : 140 mm : 220 mm

It seems the only way I can fit this would be to lay the 18650 cells horizontally (flat) and have 2 x 11s12p packs stacked vertically side by side.

If I choose this option, each 18650 cell is 65 mm in height, so two cells would be 130 mm. If I put these into the frame, I will only have 10 mm to fit the nickel strips, copper busbars, heat shrink covering, and battery enclosure... I am worried this may not be enough space.

Any advice on whether or not this could work, is there an alternative that I am missing??

I have attached the dimensions for the battery compartment for your reference.

Are all 18650 batteries the same length? For example, if there was one that is slightly shorter, it would give me more space.
Attachments
download.png
Qulbix 140 frame battery compartment
download.png (9.18 KiB) Viewed 129 times

User avatar
Chalo   100 GW

100 GW
Posts: 8824
Joined: Apr 29 2009 11:29pm
Location: Austin, Texas

Re: Fitting 264 cells in a Qulbix 140r, how can I do this, it's not wide enough!?? Please help!

Post by Chalo » Jan 10 2021 6:46pm

Image
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

mbgjt1   10 W

10 W
Posts: 79
Joined: Sep 22 2020 11:50pm

Re: Fitting 264 cells in a Qulbix 140r, how can I do this, it's not wide enough!?? Please help!

Post by mbgjt1 » Jan 10 2021 7:56pm

Chalo wrote:
Jan 10 2021 6:46pm
Image
Overkill ?

mbgjt1   10 W

10 W
Posts: 79
Joined: Sep 22 2020 11:50pm

Re: Fitting 264 cells in a Qulbix 140r, how can I do this, it's not wide enough!?? Please help!

Post by mbgjt1 » Jan 10 2021 7:58pm

Another option would be to use 21700 cells and build 2 x 6s10p and 2 x 5s10p all connected together and stacked flat side by side.

Thoughts?

Post Reply