Battery Equivalent Circuit

Battery Equivalent Circuit

• PNGV
• GNL

Battery Modeling

• ECM Equivalent Circuit Model
• Physics Electrochemical
• DDM Data driven model

SoC Estimation

• Direct Calculation
  • Look up Table
  • Coulomb Counting
• Electrochemical
  • Pseudo-2D
  • Single Particle Model (SPM)
• Circuit principle (equivalent circuit model, ECM)
  • Open circuit voltage (OCV)
  • Internal Resistance (Rint, IR)
  • n-RC (nth-RC)
  • Ampere counting method (Ampere-hour integral, Ah counting)
  • Coulomb counting (CC)
  • Thevenin
  • EMF method
  • Equivalent Circuit Model, ECM (EchM)
• Filter methods
  • KF
  • EKF
  • EEKF
  • CKF (cubature KF)
  • ACKF (adaptive cubature KF)
  • UKF
  • Particle filter
  • Adaptive extended H-infinity filter (AEHF)
  • H∞
• Data driven methods
  • ANN
  • Relevance Vector Machines (RVM)
  • SVM
  • GA
  • SVR

SoH Estimation

• Direct measurement
  • Discharge test
  • 1-C
  • Charge test
  • Quiescent voltage measurement
  • Internal resistance
  • Electrochemical Impedance spectroscopy
  • Chemical analysis
  • Coulomb-counting
  • Open circuit voltage (OCV)
• Model-based
  • Detecting (change of measured variables)
  • Load-based (observing the effects of loads)
  • Electrochemical
  • Equivalent circuit model
• Filter
  • Kalman filter
  • Least squares method
• Data driven
  • fuzzy logic
  • State-vector machine
  • ANN
  • Particle Swarm Optimization

Battery Estimation Variable

• State of Charge (SoC)
• State of Health (SoH)

Battery Management System

• monitoring of voltage, current, and temperature
• battery performance optimization
• failure prediction and prevention
• collection of battery data
• analysis of battery data
• lifetime prognostics
• evaluation and optimization

References