电动汽车冷却系统热流场的协同分析与散热性能研究  

Research on Thermal Flow Field Synergy and Heat Dissipation Performance of Electric Vehicle Cooling System

作　　者：徐晓明[1,2] 赵又群[1] 

机构地区：[1]南京航空航天大学能源与动力学院,南京210016 [2]江苏大学汽车与交通工程学院,镇江212013

出　　处：《机械工程学报》2013年第2期102-108,共7页Journal of Mechanical Engineering

基　　金：国家高技术研究发展计划(863计划;2011AA11A210;2011AA11A220);江苏省普通高校研究生科研创新计划(CXLX11_0182)资助项目

摘　　要：场协同原理可以应用于电动汽车不同冷却方式的散热性能分析,进而指导电动汽车冷却方式设计,研究表明,两边出风口模式的自然进风散热性能较差,上出风口模式具有较为优越的自然进风散热性能和气动性能;双口上出风模式比单口上出风模式散热性能优越,但气动性能稍差,综合考虑,选择单口上出风模式更能平衡电动汽车的气动性能和自然进风散热性能;随着车速提高,电池组最高温升和内部最大温差均降低,且与车速基本呈线性关系变化;水冷板不同流径的速度均匀性由低到高顺序如下:首先单进单出,其次双进双出,再到三进三出,最后为六进六出,根据场协同原理分析,散热性能逐次提高,并用试验分析和仿真计算结合的方法验证这一判断的准确性。上述结论为电动汽车冷却方式的选择提供参考依据。It is applied field synergy principle to research the heat dissipation performance of different electric vehicle cooling mode, the results indicate that： the heat dissipation capability of both sides outlet mode of wind is worse, up-outlet mode of wind can improve heat dissipation capability and aerodynamic capability; the aerodynamic capability of up-outlet mode of wind with one hole is better, the heat dissipation capability of up-outlet mode of wind with two holes is superiority, it is balance to choose up-outlet mode of wind with one hole between aerodynamic capability and heat dissipation capability; along with vehicle velocity increased, the maximum temperature rising and maximum temperature difference of battery pack will descend, and it is linearity relation along with vehicle velocity; based on field synergy principle, the sequence of different flow path＇s heat dissipation capability from low to high： single-inlet and single-outlet, double-inlet and double-outlet, three-inlet and three-outlet, six-inlet and six-outlet, it validates that the judgment is accuracy by combined of simulation and experimental. Then the reference basis for choosing electric vehicle cooling mode is offered.

关 键 词：场协同原理 电动汽车 自然进风散热 出风口模式 水冷板流径 速度均匀性 

分 类 号：U469[机械工程—车辆工程]