Thread: Low cost BMS
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Old 07-08-2011, 06:59 PM   #13 (permalink)
VW Polo EV
Join Date: Aug 2009
Location: Port Macquarie
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Hi Harlequin2
How does the PIC in your BMS module handle noise?
Is there a likelihood of a PIC lockup doing something like the following?

The reason I ask is because another guy I know made up the micro controlled BMS (with a couple of minor mods) on the Battery Vehicle Society web site.
It worked fine initially until the day either the master or some of the slaves locked up (can't remember which he said it was) apparently due to noise.
The BMS then didn't put out the Low Cell Voltage warning & 26 batteries got discharged to the point of being door stops as a result.
Wouldn't want that to happen to anyone's LiFePo pack.
Electric VW Polo
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