Reduced Order Models (ROM) and Digital Twins are very promising and favorable in our time and they have a lot of applications. Ansys platform allow us to create ROM and Digital Twin of batteries to predict the electro chemical and thermal behavior of batteries from cell to pack. Here are the steps to create ROM from Fluent results or test data:

  • Create cell ECM from HPPC data
  • Create module ECM using cell ECM
  • Generate thermal ROM training data in Fluent
  • Create LTI ROM in Twin Builder using training data generated by Fluent
  • Couple the Module ECM and thermal LTI ROM in Twin Builder
  • Create pack and connect to cooling pate if needed

ECM (Equivalent Circuit Model) represents the electro-chemical behavior using test data while Thermal ROM mimics the Thermal behavior. On the other hand, the ETC (Electro-Thermally Coupled) model include all these in one coupled model. The procedure is shown below:

Digital Twin Reduced Order Model

Fig. 1) Steps of making a thermal ROM and ECM to create and ETC ROM in Ansys Twin Builder


Learn more about battery simulation solutions on our Battery Solutions webpage.