Research on Heat Dissipation Performance of Power Batteries Based on Flat Heat Pipes
The feasibility of applying flat heat pipes to thermal management systems of batteries was studied,and a heat pipe cooling system of power batteries was constructed by combining flat heat pipes with cooling liquid.A three-dimensional model of the cooling system was established using CATIA,and a thermal simulation of the battery pack was conducted using Fluent.The temperature changes and temperature distribution of the battery pack were analyzed under different environmental temperatures,discharge rates,and cooling liquid flow rates.The experimental results show that the battery pack using flat heat pipes has a maximum temperature below 40℃and a maximum temperature difference below 5℃at a discharge rate of 2.5 C.At a discharge rate of 1 C,compared with those of modules without flat heat pipes,the maximum temperature and maximum temperature difference of the heat pipe cooling sys-tem of the battery are reduced by 8.19℃and 7.46℃,respectively.