Numerical study on thermal management of battery based on PCM/micro-channel cooling

Abstract

In recent years, the development of electric vehicles has made remarkable achievements. Its popularization and application can alleviate the problem of energy shortage and environmental pollution to some extent. In the process of discharging, the battery will generate heat. If the heat cannot be transferred to the external environment in time, the normal operation of the battery will be affected. In this paper, a BTM system based on PCM/micro-channel cooling is designed, and its cooling effect on battery module is studied by numerical simulation. The electrochemical-thermal coupling model is established to study the heat production and temperature changes of the battery during discharging. The cooling effect of the flow rate at the inlet of the cooling plate and the thickness of PCM on the battery module is studied. The results show that the BTM system can not only reduce the maximum temperature of the battery module, but also effectively improve the temperature inhomogeneity among the batteries.