Uneven distribution of weak Vectrix cells within the battery pack- why???

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Anderson
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Last seen: 8 years 4 days ago
Joined: Saturday, October 11, 2008 - 18:28
Points: 142
Re: Uneven distribution of weak Vectrix cells within the ...

I recently took the battery cover off and it looks like you could fit a PCB board with relays on top of the
battery, the purpose being to monitor battery cell voltage and maybe charge them without needing direct
wiring to the battery cells except two wires (the plus and minus).
.
.
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Relay board.JPG

Mik
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Last seen: 8 years 1 month ago
Joined: Tuesday, December 11, 2007 - 15:27
Points: 3739
Re: Uneven distribution of weak Vectrix cells within the ...

I recently took the battery cover off and it looks like you could fit a PCB board with relays on top of the
battery, the purpose being to monitor battery cell voltage and maybe charge them without needing direct
wiring to the battery cells except two wires (the plus and minus).
.
.
.
Relay board.JPG

Forget it!

A) There are three cell layers on top of each other.
B) Your pcb will block the cooling airflow.
C) There is insufficient space for it, even on the top layer.

This is pretty much the maximum you can add into the battery without hindering the cooling air flow://i281.photobucket.com/albums/kk217/Mr_Mik/Vectux/Battery/Battery%20rework%205%20BMS/th_DSC06197.jpg)

Initially one of the rainbow cables was not perfectly tied down...when I was doing the overheating tests in full sun etc., the fans came on during riding, and the slightly lower position of the rear fan's edge (due to my weight during riding) cut through the insulation and caused weird and wonderful temperature and voltage readings! That's how tightly engineered it is!

This information may be used entirely at your own risk.

There is always a way if there is no other way!

Mik
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Last seen: 8 years 1 month ago
Joined: Tuesday, December 11, 2007 - 15:27
Points: 3739
Re: Uneven distribution of weak Vectrix cells within the ...

This page has been added to the Vectrix Collaborative Handbook - please try to stay on topic!

This information may be used entirely at your own risk.

There is always a way if there is no other way!

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