Eiji Kadouchi

12V Pb Battery Modelling with Deterioration Characteristics for Vehicle System Simulation

Abstract A vehicle power network is becoming a most primary system and a battery is one of the key components in the system. A deteriorated Pb battery model for simulation of an automotive electrical system is developed. First main deterioration modes are determined from actually used batteries. Their models are derived from life bench tests for each mode. They are described in VHDL-AMS (IEEE1076.1) and their parameters for open circuit voltage (OCV), direct current internal resistance (DC-IR), and charge-discharge polarization are extracted from measured data. The developed models had high accuracies for both short-term and long-term load patterns and they can be utilized for simulation of an automotive power network system connected with a vehicle model.