Development of 1D vehicle energy flow model to select suitable thermal system configuration and components

In case of electric vehicle (EV), as there are various thermal system configurations in each automotive manufacturer, suppliers should take a huge amount of time to select the best components for each OEM system. To solve this problem, a model-based development (MBD) method switching components easily and estimating their benefits efficiently is needed. In this study, the vehicle energy flow model was developed to select appropriate system configuration and components to balance cabin comfort and battery lifetime. To realize required accuracy and computing time, a 1D model, which has a motor, an air-cooling battery, a coolant circuit and heating ventilation and air-conditioning (HVAC) in a cabin, based on C-segment vehicle, was developed.