基于Fluent的并联式风冷电池系统的仿真及优化

Simulation and optimization of parallel air-cooled battery system based on Fluent

文章利用计算流体力学软件Fluent对并联式风冷电池系统的温度场进行计算,然后通过在与冷却通道相对的会聚静压室壁上增设二次排气口对冷却系统进行优化,从而提高冷却系统的冷却性能。结果表明,在恒产热率的情况下,二次排气口的位置对冷却系统的冷却性能有很大的影响,二次排气口设置在靠近入口的冷却通道上有效提高了冷却系统的冷却性能,电池组的最高温度和最大温差均降低了2k以上。

In this paper, the temperature field of the parallel air-cooled battery system are calculated by using the comput-ational fluid dynamics software Fluent. Then the cooling system is optimized by adding a secondary vent on the wall of the convergence plenum against the cooling channel to improve the cooling performance of the cooling system. The results show that under the condition of constant heat generation rate, the position of the secondary vent has a great influence on the cooling performance of the cooling system. The cooling performance of the cooling system is effectively improved by locating the secondary vent against the cooling channel around the battery cell with the maximum temperature. And the maximum temperature and the maximum temperature difference of the battery pack is reduced by 2 k.