电池热管理系统散热结构的设计和仿真

为了更加有效地控制电动汽车电池的工作温度,研究了一种铝板/相变材料/液冷电池热管理系统散热结构,采用CFD软件模拟仿真。研究了铝板厚度、水管数量、质量流量、导热系数、相变温度和进水温度等因素对电池散热的影响。通过对电池温度场的模拟仿真,合理控制因素之间的相互影响,将参数取值进行优化,使电池的最高温度和最大温差能够控制在44.19℃和3.18℃,此温度能够很好地满足电池的工作温度,表明铝板/相变材料/液冷相结合的新型散热结构能够较好地控制电池的温度均匀性和有效性。

Design and Simulation of Heat Dissipation Structure of Battery Management System

To control the working temperature of electric vehicle batteries more effectively,a heat dissipation structure of the thermal management system of aluminium sheet phase change material liquid-cooled batteries is studied in this paper,which is simulated by CFD software.The effects of the thickness of the aluminium plate,the number of water pipes,mass flow rate,thermal conductivity,phase change temperature and water inlet temperature on the heat dissipation of the batteries are studied.Through the simulation of the temperature field of the battery,the interaction between the reasonable control factors and the optimization of the parameters,the maximum temperature and the maximum temperature difference of the battery can be controlled at 44.19℃and 3.18℃which can well meet the working temperature of the battery.The results show that the new heat dissipation structure with the aluminum plate,phase change material and liquid cooling is of the temperature uniformity better controlled and the effectiveness of the batteries.