1. Electrical properties and modeling

1.1. Electric model

  • The electric model helps to determine the SoC or SoH.
  • Determination of SoC from simple voltage measurement is practically impossible!
  • The 1st order model provides sufficient accuracy if the parameters are f (T, SoC).
  • The internal resistance R0 is critical.
  • RC cells model the dynamic processes under load and unloading of the cell.

First order Thévenin model




Second order Thévenin model