A Study on Battery Model Verification Using Battery HILS

The development of technology for environmentally friendly cars such as plug-in hybrid electric vehicles (PHEVs) and electric vehicles (EVs) has increasingly progressed according to the conversion of vehicle development paradigms to energy issues, environmental regulations, the government’s “New Deal” policies, and so on. As a result, the importance of the battery system that is the main power source for environmentally friendly cars has grown. The most effective way of the development of PHEVs and EVs is using battery hardware-in-the-loop simulation (HILS) to significantly reduce development costs and time in vehicle-level environments for the development and evaluation of battery systems, including a battery management system (BMS). Therefore, in the present study, a battery HILS was developed and tested. It was noted through the test that the developed battery HILS could be used as a method to assess the accuracy of battery modeling in real time by applying it to developed battery system models using the electrochemical impedance spectroscopy (EIS) method.