Batteries

  • 3D Cell Design – Physics-based aging models
    • Increased behavior fidelity with the “Sub-grid Particle Surface Film” model for cell degradation
      • Two main aging mechanisms:
        • Solid-Electrolyte Interphase (SEI) film growth
        • Lithium plating film growth
      • Helps in deducing cell capacity and impedance evolutions
      • Simulates local degradation evolution of the cell
        • Locate critical aging areas with dedicated field functions
    • All models were validated against experimental results as part of the EU Commission-funded project MODALIS (MODelling of Advanced LI Storage Systems)
  • Cell thermal runaway -Solid phase time-varying porosity
    • Improved fidelity in cell solid material combustion in thermal runaway events with the time-varying porosity model
      • Handles porosity and solid volume fractions changes due to solid mass consumption/production
      • Updates porosity and solid volume fractions internally via a dedicated solver
      • User-defined initial conditions for porosity and solid volume fractions
      • Compatible with the Surface Chemistry model
  • Batteries thermal runaway – Additional cell self-heating definition options
    • More flexibility and control for the user with two additional options for the self-heating definition
      • Local self-heating rate (Q) expressed with a user-defined field function
        • Evaluating local temperature field (3D T) and outputting local heat generation field
      • Local self-heating rate expressed with a table of the cell’s heat as a function of the cell’s local temperature (Q(3D T))
    • Great productivity improvement with a single self-heating rate expression to deploy to all cells in battery pack
  • Remove constraint with Circuit Model being selected for Thermal Runaway simulation
    • Simplifies the setup for pack thermal runaway simulations by removing the unnecessary Circuit Model
  • Enhance Copy/Paste feature for User Defined Battery Cell object
    • Improved productivity with enhanced Copy/Paste capabilities
      • User Defined Battery Cell object can be copied and pasted within simulation file and across simulation files including properties, conditional models and constraints