Cross-Domain Vehicle Simulation for EV System Analysis and Development

An electric vehicle system is comprised of various subsystems, components, and elements and interacts with road and traffic environments. The vehicle driving behavior influences how the load is transferred from wheels to powertrain components that deliver energy. In today’s electrified, connected, and automated vehicle systems, cross-domain interactions are tightly coupled, and their detailed analysis is tedious. To predict component performance/degradation over the life cycle, it is necessary to estimate the real-load conditions, and virtual environment is a key enabler. Multi-domain virtual vehicle simulation serves this purpose by comprising multiphysics models, which can represent complex vehicle system architectures under normal and critical test conditions. In this example, an electric vehicle model with all the components relevant for energy flow has been built and validated with real-vehicle behavior for baselining the vehicle model. Once the base vehicle model is built, it can be used for various use cases ranging from component competitive assessment, deriving loads for HV battery over 24-hours duration, and more.