某PHEV汽车动力电池表面温度耦合优化研究

Research on Coupled Optimization of Surface Temperature for Traction Battery in a PHEV Vehicle

针对某PHEV汽车动力电池的热害问题,采用STAR-CCM+和TAITherm软件建立整车流场和温度场耦合仿真计算分析模型,获得动力电池表面温度场分布。研究了动力电池表面温度关于热源温度、热源间距和热对流的敏感性。结果表明:热对流是影响动力电池表面温度的关键因素,热源温度、热源间距对动力电池表面温度影响相对较小。基于此,提出了满足温度限值≯60℃要求的动力电池布置方案,为后续同类型PHEV汽车动力电池的布置及优化提供参考与借鉴。

Aiming at the heat damage problem of traction battery in a PHEV vehicle,established a coupled simulation analysis method for the flow and temperature field of the vehicle by software STAR-CCM+and TAITherm,obtained the surface temperature distribution of the traction battery.The sensitivities of the battery surface temperature to the temperature of heat source,the distance between heat source and battery,the heat convection are studied.The results show that heat convection is a key factor to affect the surface temperature of the traction battery,and the temperature of heat source,the distance between heat source and battery have little effect on the surface temperature of the traction battery.Proposed a battery layout plan that meets the temperature limit≯60℃,which provides reference for layout and optimization of the traction battery in a PHEV vehicle.