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电动汽车锂离子动力电池散热系统优化设计

, PP. 24-29

Keywords: 电动汽车,锂离子电池,散热系统,优化设计,Fluent

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Abstract:

针对一个箱体形状为规则立方体的锂离子电池模块的内部结构进行优化设计,通过改变箱体顶部集风区挡板通风槽的宽度递减方式、改变顶部挡板的倾斜角度以及改变出口位置三个方面提出优化方案,通过Gambit建模与网格划分建立锂离子电池模块的三维模型,使用Fluent进行计算流体力学(ComputationalFluidDynamics,CFD)模拟仿真,得出各结构电池中心截面温度分布与最高温度,发现改变箱体顶部集风区通风槽的宽度递减方式与改变出口位置两个方面都可以降低箱体内部的温度梯度,提高各电池的温度均匀性,而改变顶部挡板的倾斜角度则对电池最高温度的降低效果明显。

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