SLUAA45
April 2020
BQ27Z561
End of Discharge SOC Jump Elimination
Trademarks
1
Introduction
2
Improve Battery Modeling
2.1
Improve Battery Modeling -- Get Matched ChemID
2.2
Improve Battery Modeling -- Use GPCRB Tool to Optimize Low-Temperature Performance
3
Optimize Gauge Configurations
3.1
Optimize Gauge Configuration -- Load Prediction
3.1.1
Load Mode
3.1.2
Load Select
3.1.3
Discharge Current Threshold and Quit Current
3.2
Optimize Gauge Configuration -- Enable Smoothing to 0% in Discharge Mode
3.3
Optimize Gauge Configuration -- Enable Fast Resistance Scaling
3.4
Optimize Gauge Configuration -- EDV in Steep Zone
4
Achieve Successful Ra Table, Qmax and DOD0 Learning
4.1
Complete a Learning Cycle to Update Ra Table and Qmax
4.2
Add a Dedicated Relaxation to Update DOD0
5
References
5
References
Texas Instruments:
Impedance Track Gauge Configuration For Dynamic Loads (EPOS)
Texas Instruments:
Achieving The Successful Learning Cycle
Texas Instruments:
Theory and Implementation of Impedance Track™ Battery Fuel-Gauging Algorithm in bq2750x Family
Texas Instruments:
BQ27Z561-R1 Technical Reference Manual