中文摘要：

蓄电池柜内气流分布对电池组散热效率和散热均衡性有重要影响。蓄电池柜气流分配易形成低速涡旋，电池组表面流速分布不均匀，气流组织难以控制等问题，提出三种气流组织优化方案，基于计算流体力学（CFD）建立蓄电池柜气流分配区域气流组织模型，采用标准κ-ε湍流模型对蓄电池柜气流分配腔进行数值仿真，获得腔体内气流组织的速度场和出口流速的分布规律，并与原始气流组织方案的实验结果对比，计算气流分配腔出口风速的不均匀系数。结果表明，使用控制方案后分配腔内气流分布更加均匀，出口气流速度分布更加合理，增加导流板能够降低速度场的不均匀系数，但同时会增大气流动能损失。

英文摘要：

Airflow distribution of accumulator tank easily causes a lot of problems, such as low velocity vortex, nonuniform distribution of surface velocity of battery pack, and uncontrollability of air distribution. In order to solve these problems, three kinds of optimization schemes of air distribution are proposed. Based on computational fluid mechanics, air distribution model of airflow allocation region of the accumulator tank is built. Numerical simula- tion is carried out for airflow allocation chamber by using standard k - e turbulence model to obtain regularities of dis- tribution velocity field and exit velocity of airflow distribution in the chamber. Simulation results are compared with that of original airflow allocation scheme, and non - uniform coefficient of exit velocity of airflow allocation chamber is calculated. It is proved that the airflow distribution in allocation chamber is more uniform after using the control scheme and the exit airflow velocity is more reasonable. It can reduce non - uniform coefficient of velocity field, but enlarge kinetic energy loss of airflow to increase guide plate.