SLUAB20A
May 2025 – July 2025
BQ41Z50
,
BQ41Z90
1
Abstract
Trademarks
1
Introduction
2
Battery Gauging Algorithm Background
3
Battery Modeling
4
Battery State of Charge Estimation and Remaining Capacity Prediction
5
Challenges Modeling Battery Response to Dynamic Load Currents
6
Approaches to Deal with Battery Dynamics
6.1
Benefits to Gauging Accuracy for Dynamic Loads
6.2
Algorithm Performance
7
Summary
8
References
9
Revision History
8
References
Texas Instruments,
Impedance Track™ Gauge Configuration for Dynamic Loads (EPOS)
, application note
Texas Instruments,
Theory and Implementation of Impedance Track™ Battery Fuel-Gauging Algorithm in bq2750x Family
, application note
Texas Instruments,
Impedance Track™ Gas Gauge for Novices
, application note