Abstract: A subsystem model of power battery for studying multi-power-resource vehicles’ forward simulation model was built. Based on the framework of ideal voltage source and inner resistance model and consideration of the effect of SOC and temperature, the model was made and applied to simulation validation via experiments of various working statuses of a certain NiMH battery. In this process, a study was made on the engineering method for the temperature estimate of battery.

Key words: battery model, NiMH battery, temperature model for battery