rockman7892
Electrical
- Apr 7, 2008
- 1,176
In reviewing IEEE 485 for calculation of lead acid batteries the process for determining sizing of battery capacity involves evaluating the capacity required for each section of the defined duty cycle and using the maximum calculated capacity from all of the sections to determine battery rating.
The sections start with the 1min rating in Section one and then continue though subsequent sections of the duty cycle by evaluating change in current and battery discharge (k factor) for determining section rating.
What I don't quite understand is why in each of the sections after the initial 1min rating section does it calculate the section by assuming the 1min rating continues through the entire 2nd section and then subtracts the 2nd section current from the positive 1min value by looking at the change in current (usually resulting in negative value).
I cant seem to understand why this process is used as opposed to just taking each section, evaluating the specific rating required for that section and then just adding all the sections together?
Is anyone able to give me a general explanation of reasoning behind how the IEEE 485 calculation process works but examining each section and looking at change in current within each along with Kt factor to derive section capacity?
Thank You
The sections start with the 1min rating in Section one and then continue though subsequent sections of the duty cycle by evaluating change in current and battery discharge (k factor) for determining section rating.
What I don't quite understand is why in each of the sections after the initial 1min rating section does it calculate the section by assuming the 1min rating continues through the entire 2nd section and then subtracts the 2nd section current from the positive 1min value by looking at the change in current (usually resulting in negative value).
I cant seem to understand why this process is used as opposed to just taking each section, evaluating the specific rating required for that section and then just adding all the sections together?
Is anyone able to give me a general explanation of reasoning behind how the IEEE 485 calculation process works but examining each section and looking at change in current within each along with Kt factor to derive section capacity?
Thank You