Sub-1.0% State-of-Charge Estimation Across Full Operating Temperatures
Coupling two concurrent Extended Kalman Filters—one estimating state of charge, the second tracking internal cell ohmic and polarization resistance in real time.
Hysteresis Compensation in LFP Chemistries
Integrating mathematical hysteresis models that accurately track state of charge across the flat 3.2V to 3.3V open-circuit voltage plateau of lithium iron phosphate cells.
- Sub-1.0% SoC estimation accuracy verified across -30°C to 60°C.
- Real-time online parameter adaptation tracking aging degradation.
- Zero drift accumulation over 1,000 km continuous driving cycles.
- Instantaneous Open Circuit Voltage (OCV) relaxation calibration.
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