Hi All
Please can someone help me understand the Design Capacity and Energy scaling factors.
I have a battery pack that consists of 4 12V batteries in series thus 48V nominal and 86Ah capacity, Charged Voltage is 52V, we have enabled the X10 mode in the pack configuration. This now gives me following value for the Design capacity
86Ah * 1000 = 86000 mAh /10 = 8600 cAh
This value is accepted by the EVM software and we could write it to the device.I also set the number of cells to 4 in Data flash
Now the problem is the design energy value is this for one cell (battery or the pack (4 batteries)) and because either way I have a to large value for the device registers that allows may 32767 max
We assumed and calculate the design energy as follows
52V * 86 = 4472 Wh
4472Wh *1000 =4472000mWh/10 = 447200cWh
Note we divide by 10 because of the X10Mode
This is assumed over the Pack not per cell or battery, if we do the same for 1 Battery then
It is 13V*86 = 1118Wh *1000 =1118000 mWh/10 = 111800 cWh
Both values are too big for the maximum allowed values.
We have set the Energy scaling factor to 10 which is mentioned on page 17 of the Datasheet does this mean that the cWh now gets scaled by 10 again which is
111800/10 = 11180 which fits the register
I apologize for all these question however it is not clear how these parameters function
Can you guys help with a design example calculation the parameters from a Battery pack
Regrads
Peter