BQ40Z50-R2: Cell balancing in relax

Beginner

Part Number: BQ40Z50-R2

Hi Team,

May I learn from you the detail behavior when cell balancing?

We are trying to test cell balancing in relax mode. My expectation is the higher voltage will charge to weak cell.

Based on my test result, what we saw is the the voltage of higher cell decrease by time. But the voltage of weak cell keep the same.

Kindly let me know if my expectation is wrong. Attached log file for your reference. CBR TEST.xlsx

0 Nick Brylski over 4 years ago

Hi Ake,

Can you attach the .gg file? Need to perform learning cycle and have a field updated qmax before cell balancing can occur.

Best regards,

0 Beginner over 4 years ago in reply to Nick Brylski

Hi Nick,

I can attach by mail. As you can see, CBTime is activated thus I think CB is activated.

0 Nick Brylski over 4 years ago in reply to Beginner

Hi,

This looks ok, our cell balancing is passive and so it works by discharging the highest voltage. Does not charge the lower voltage cells

BR,

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