I just fail to wrap my head around how to calculate SoC in Wh% from a data sheet presented with Ah%.
Thinking SoC 10% Ah is SoC 10% Wh is not correct, right? AFAIK, there should be about 15% difference between 10%Ah and 10%Wh?
So. I have this DIY welded E-bike and DIY 10s NMC battery rebuilt from a slightly used 12s Ford Kuga PHEV module. 49,5Ah cells. The closest data sheet I could find is Samsung SDI 94Ah cells. Since I do not have equipment to exactly measure voltage-curve with all the knees, legs, etc, this data sheet is all I have to work from.
The reason is. I can manually configure the display of the E-bike for SoC voltages. Entering values based on Ah from the data sheet would simply misrepresent the actual energy level of the battery. The indicator is divided in 5 bars, so, 0 - 20 - 40 - 60 - 80 - 100 (%)
The sheet have a discharge diagram and table co-relating resting OCV and Ah%SoC. (The sheet is from resources, Samsung cells Pt2)
OCV Discharge @ 25°C
100% - 4.129
90% - 4.010
80% - 3.907 - ?
70% - 3.819
60% - 3.751 - ?
50% - 3.676
40% - 3.641 - ?
30% - 3.614
20% - 3.574 - ?
10% - 3.490
0% - 3.404
So, what values would be for 20-40-60-80 in volts for WhSoC?
Thinking SoC 10% Ah is SoC 10% Wh is not correct, right? AFAIK, there should be about 15% difference between 10%Ah and 10%Wh?
So. I have this DIY welded E-bike and DIY 10s NMC battery rebuilt from a slightly used 12s Ford Kuga PHEV module. 49,5Ah cells. The closest data sheet I could find is Samsung SDI 94Ah cells. Since I do not have equipment to exactly measure voltage-curve with all the knees, legs, etc, this data sheet is all I have to work from.
The reason is. I can manually configure the display of the E-bike for SoC voltages. Entering values based on Ah from the data sheet would simply misrepresent the actual energy level of the battery. The indicator is divided in 5 bars, so, 0 - 20 - 40 - 60 - 80 - 100 (%)
The sheet have a discharge diagram and table co-relating resting OCV and Ah%SoC. (The sheet is from resources, Samsung cells Pt2)
OCV Discharge @ 25°C
100% - 4.129
90% - 4.010
80% - 3.907 - ?
70% - 3.819
60% - 3.751 - ?
50% - 3.676
40% - 3.641 - ?
30% - 3.614
20% - 3.574 - ?
10% - 3.490
0% - 3.404
So, what values would be for 20-40-60-80 in volts for WhSoC?