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What is involved in ECM extraction? ​

The ECM Extraction module performs battery characterization and parameter identification using uploaded HPPC and OCV datasets.

The objective of the extraction process is to generate the parameters required for a second-order Thevenin Equivalent Circuit Model (ECM), including:

  • Open Circuit Voltage (OCV)
  • Ohmic Resistance (R0)
  • Polarization Resistance (R1)
  • Polarization Resistance (R2)
  • Polarization Capacitance (C1)
  • Polarization Capacitance (C2)

The extracted parameters are subsequently used for battery simulation and State of Charge (SOC) estimation.

ECM Extraction Workflow ​

The ECM Extraction module consists of six stages:

  1. Configuration
  2. Pulse Segmentation
  3. OCV-SOC Characterization
  4. RC Parameter Identification
  5. Pulse Fit Validation
  6. Summary

Each stage provides visualization and validation tools for reviewing the characterization results.

Extraction Outputs ​

Upon successful completion, the software generates:

  • OCV-SOC lookup tables
  • ECM parameters
  • Temperature-dependent parameter maps
  • Characterization plots
  • YAML parameter files
  • Summary reports

These outputs are used during battery simulation and SOC estimation.