We have an application that requires gas-gauging and protection for a 4S (various capacities) LiFePO4 battery pack. The pack can see various steady-state loads from 5A to 25A but occasionally (a few times a day to once a week) sees a 150A-200A pulsed load for 0.5-2 seconds. This pulse might occur just once or repeat every few seconds up to 10 times.
Would the IT or CEDV algorithms be a better choice for gas gauging with these highly variable discharge current levels? We've done a bit of experimenting with the bq78PL114S12 but have had a lot of problems with the gauging accuracy when the higher steady-state discharges and high-amp pulses occur (protection works perfectly though). We'd be willing to invest the time in getting the bq78PL116 properly configured (AUX files, the various settings, etc.) but were wondering if CEDV might be a better choice? Especially with the bq3055's faster sampling rate (4x/sec?) which might be a better fit for gauging with our shorter high-amp pulse lengths.
Thank you!
