Fly Electric!

PIC Balancer - Final Cell Balancing (example 'E8')

This illustrates how the balancer can kick in again if left to settle longer (~3 minutes shown here):
We can see here how the pack settles after the intitial balance and then drifts a little before reaching equilibrium
(EEPROM memory can only store 32 events so this comprises two consecutive recordings with the middle shortened)
One cell starts high (pink square) so gets 100% duty cycle but the overshoot keeps kicking in to prevent over-discharge
The three voltages then reach the chosen accuracy level (0.01v gap) until the lowest cell dips/jitters down 0.005v
This triggers a 12% duty cycle (1/4 of max because gap is so low) which pulls the highest down a tighter grouping
A 25% duty cycle occurs right at the end as the gap widens briefly and this proves enough to pull the cells together

Back
Click on the links below for other pages.

Home ¦ Art of the Possible ¦ Absence of Matter ¦ Links ¦ Updates ¦ Email
SITE MAP