[Yves M.]

Here are my findings:

There are 10 voltage sensors into the battery pack:
http://www.md92raid.100freemb.com/pub/i ... ge116.html

When one of the 10 'subpacks', being checked by one of the 10 sensors, reaches the upper or lower preset voltage limit, the system executes a Reset of the SOC calculation:
http://www.md92raid.100freemb.com/pub/i ... ge130.html

So the number of times you get a recal is affected by one of the subpack, not being able to keep up with the other subpack. Some batteries in that pack have lost their capacity to keep charge and being charged.

This subpack is empty, the IMA battery SOC will show empty. This subpack is full, the SOC of the IMA shows full.


And the IMA system will show that the battery has a problem when one of the listed arrives:
http://www.md92raid.100freemb.com/pub/i ... ge131.html

 

[Rick]

Very nice explanation!

 

[Guest]

Hi Yves:

___Did you see this explained in the tech manual? It sure makes sense … I wonder if there was a way to shrink the Delta between good/bad via flash to reduce the number of recal’s some members in this forum as well as the Yahoo-Honda-Hybrid group are experiencing? Maybe soldering in a small but high capacity resistor on the sub-group’s that are high to bring about a small voltage drop to match that sub-group that is slightly low possibly?

___Good Luck

___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___[email:b8qe2o8d][email protected][/email:b8qe2o8d]

 

[Yves M.]

Yes, in the second link I gave, the paragraphe above the shema directly says what is a recal. It is actually called "reset the calculation"

The BCMM does the SOC calculation - Any of the 10 voltage sensor (actually 2 subpacks per sensor) reaching the voltahe upper or lower limit triggers the "reset calculation" of the SOC

And the diagram calls it 'MAP Correction" since the reset calculation that happens when a voltage sensor is at the limit does reset the entire pack SOC

I do not know about your idea of the resistor, I do not have enough knowledge on this. Maybe an other member could be more knowledgeable.

For sure, the sensors can point to the faulty subpacks. Maybe replacing the exact batteries that causes this could be enough instead of replacing the entire $$ pack