SOC at 82.4%
#11
12-28-2007, 01:03 PM
Hybrid and Ethanol Expert
Join Date: Mar 2005
Location: All over the Central U.S.
Posts: 3,616
Re: SOC at 82.4%
I have had one report of a person turning the FEH off with a SOC of above 75% ( I think it was 76.x % ). Then, on the next key cycle, the car would not start, it would not even crank over.
It would be a big help, if others could look into this, and if you are in a place close to home, turn off your car if you are ever in a Battery Recal mode, and get a SOC over 75%.
I am very curious if this is really a problem, or an isolated event.
Thank You in advance. -John
P.S. Running some accessories to drain the battery back down to under 75% allowed the car to restart.
It would be a big help, if others could look into this, and if you are in a place close to home, turn off your car if you are ever in a Battery Recal mode, and get a SOC over 75%.
I am very curious if this is really a problem, or an isolated event.
Thank You in advance. -John
P.S. Running some accessories to drain the battery back down to under 75% allowed the car to restart.
#12
12-28-2007, 02:38 PM
Join Date: Nov 2006
Location: Southwestern Pa
Posts: 1,747
Re: SOC at 82.4%
I have had one report of a person turning the FEH off with a SOC of above 75% ( I think it was 76.x % ). Then, on the next key cycle, the car would not start, it would not even crank over.
It would be a big help, if others could look into this, and .
I am very curious if this is really a problem, or an isolated event.
Thank You in advance. -John
P.S. Running some accessories to drain the battery back down to under 75% allowed the car to restart.
It would be a big help, if others could look into this, and .
I am very curious if this is really a problem, or an isolated event.
Thank You in advance. -John
P.S. Running some accessories to drain the battery back down to under 75% allowed the car to restart.
John, I hit 82.4% on my drive to work and parked it at that reading. 8 hours later, the car started right up. I hope this helps.
Last edited by Billyk; 12-28-2007 at 02:40 PM. Reason: Grammer error
#13
12-28-2007, 02:39 PM
Join Date: Nov 2006
Location: Southwestern Pa
Posts: 1,747
Re: SOC at 82.4%
Going down a long mountain grade, my SOC hit 67.9%.
It may have gone higher, but I reached the bottom of the slope at 67.9%.
It did take a charge slower, but was still allowing something like 22 amps, about half of normal regen to enter the battery.
After the downhill, I needed to accelerate up the next hill, and the battery used up that power quickly, to return to 53.0%.
I was getting about 60 MPG going uphill for 1 mile at 60 miles per hour!
-John
It may have gone higher, but I reached the bottom of the slope at 67.9%.
It did take a charge slower, but was still allowing something like 22 amps, about half of normal regen to enter the battery.
After the downhill, I needed to accelerate up the next hill, and the battery used up that power quickly, to return to 53.0%.
I was getting about 60 MPG going uphill for 1 mile at 60 miles per hour!
-John
#14
12-28-2007, 05:25 PM
Hybrid and Ethanol Expert
Join Date: Mar 2005
Location: All over the Central U.S.
Posts: 3,616
Re: SOC at 82.4%
Yes, a little, but most of the regen happened from coasting down a 7% slope with the car in D and in L during the steepest parts with curves.
I used L to get engine run-up ( and fuel cut ) then did most of the coasting in D which gave slight regen, but for like 10 minutes in a row.
The charge amps were set to 22 amps. It would go to zero for a few seconds to give the pack a rest, or whatever, then go back to 22 amps.
I notice charge amps of 45 to 48 amps when the SOC is below 53%.
I used L to get engine run-up ( and fuel cut ) then did most of the coasting in D which gave slight regen, but for like 10 minutes in a row.
The charge amps were set to 22 amps. It would go to zero for a few seconds to give the pack a rest, or whatever, then go back to 22 amps.
I notice charge amps of 45 to 48 amps when the SOC is below 53%.
#15
01-28-2008, 10:52 AM
Hybrid and Ethanol Expert
Join Date: Mar 2005
Location: All over the Central U.S.
Posts: 3,616
Re: SOC at 82.4%
Take a look at this:
This was a battery "recondition" or what Ford calls "Recalibration" event.
Note Module Delta Voltage was 0.17v
SOC was 80.1 % and the charge amps allowed ( inbound ) were 28.0.
Speed was 75 miles per hour cruise control on flat interstate.
MPG during charge up was 25.0 MPG @ 75 miles per hour.
Without the SG, I would have never known this was happening.
One or two minutes later, I took the following photo:
Note that now the battery was DIS-charging to get back to 53%.
Notice the MDV is down to 0.05v.
Notice I'm getting 58.4 MPG at 76 MPH on flat interstate!
This is how PHEV's work. They give battery boost at ALL speeds.
-John
This was a battery "recondition" or what Ford calls "Recalibration" event.
Note Module Delta Voltage was 0.17v
SOC was 80.1 % and the charge amps allowed ( inbound ) were 28.0.
Speed was 75 miles per hour cruise control on flat interstate.
MPG during charge up was 25.0 MPG @ 75 miles per hour.
Without the SG, I would have never known this was happening.
One or two minutes later, I took the following photo:
Note that now the battery was DIS-charging to get back to 53%.
Notice the MDV is down to 0.05v.
Notice I'm getting 58.4 MPG at 76 MPH on flat interstate!
This is how PHEV's work. They give battery boost at ALL speeds.
-John
#16
01-28-2008, 12:28 PM
Re: SOC at 82.4%
OK so as long as the hv battery has enough charge, it will boost or help mpg at any speed? I assume as the SOC gets to low it will stops helping....what is the SOC that it stops?
#17
01-28-2008, 01:08 PM
Hybrid and Ethanol Expert
Join Date: Mar 2005
Location: All over the Central U.S.
Posts: 3,616
Re: SOC at 82.4%
It is "forced" to help at anything over 53%.
Between 40% and 53% it "helps" only if you request it by increased pedal angle ( IE accelerate to pass ).
Below 40% it won't help.... UNLESS the car and catalyst is cold... then it will help down to as low as 30%.
There may be exceptions to even this.
The rules are many and complicated.
-John
Between 40% and 53% it "helps" only if you request it by increased pedal angle ( IE accelerate to pass ).
Below 40% it won't help.... UNLESS the car and catalyst is cold... then it will help down to as low as 30%.
There may be exceptions to even this.
The rules are many and complicated.
-John
#18
01-28-2008, 02:37 PM
Re: SOC at 82.4%
Interesting...so if you can keep the soc over 53...you get crazy mpg (i.e. phev) until you drop down to the 40's.....
Out of curiousity, these rules...learned from experience? (and hours of staring at a scan gauge while driving
) or is there a service manual or something to pull this type of info from?
Out of curiousity, these rules...learned from experience? (and hours of staring at a scan gauge while driving
) or is there a service manual or something to pull this type of info from?
Last edited by Slick; 01-28-2008 at 02:40 PM.
#19
01-28-2008, 04:39 PM
Join Date: Nov 2006
Location: Southwestern Pa
Posts: 1,747
Re: SOC at 82.4%
#20
01-28-2008, 09:34 PM
Re: SOC at 82.4%
Take a look at this:
This was a battery "recondition" or what Ford calls "Recalibration" event.
Note Module Delta Voltage was 0.17v
SOC was 80.1 % and the charge amps allowed ( inbound ) were 28.0.
Speed was 75 miles per hour cruise control on flat interstate.
MPG during charge up was 25.0 MPG @ 75 miles per hour.
Without the SG, I would have never known this was happening.
This was a battery "recondition" or what Ford calls "Recalibration" event.
Note Module Delta Voltage was 0.17v
SOC was 80.1 % and the charge amps allowed ( inbound ) were 28.0.
Speed was 75 miles per hour cruise control on flat interstate.
MPG during charge up was 25.0 MPG @ 75 miles per hour.
Without the SG, I would have never known this was happening.
A couple of xgauge questions:
- Is "charge amps allowed (-A<-)" showing charge potential the battery will take in regen. In other words is it an indicator of how much the charge needle may go to the charge side during braking or a FS? I'm assumng this is the same thing as "MxC" on the xgauge chart:
https://www.greenhybrid.com/share/fi...uge_coding.JPG
- What is MDV measuring?
Thanks,
Rick
