[1]沈超,张艺哲,杨建中,等.电动汽车驱动电机冷却流道性能的数值模拟研究[J].郑州大学学报(工学版),2021,42(06):69-74.
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电动汽车驱动电机冷却流道性能的数值模拟研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年06期
页码:
69-74
栏目:
出版日期:
2021-11-10

文章信息/Info

Title:
Numerical Research on Optimal Design of Cooling Channels for Driving Motors of Electric Vehicles
作者:
沈超张艺哲杨建中李欢张东伟
文献标志码:
A
摘要:
温度对电动汽车电机的寿命具有重要影响。本文针对四种不同功率电动汽车驱动电机的散热问题,建立了机壳内部流体流动与换热的三维模型,基于Fluent软件对两种散热方案下的流动和温度分布进行计算,对比分析了两种不同流道结构在不同驱动功率下内壁面最高温度和流道压力分布。结果显示电机功率为80 kW和90 kW的时候,两种流道结构均能满足散热要求,但六通道流道结构具有更好的散热效果。当电机功率超过100 kW的时候,只有六通道流道结构的机壳能够满足散热要求。四通道周向“Z”字型流道结构的机壳,在冷却过程中,流道的压力损失较小,对机壳的承压能力要求不高,因此在较低功率的驱动电机冷却方案中可以优先选用四通道周向“Z”字型结构。
Abstract:
Temperature has an important influence on the life of electric vehicle motors. Aiming at the heat dissipation problem of four different power electric vehicle drive motors, this paper establishes a three-dimensional model of fluid flow and heat transfer inside the casing. ba<x>sed on the Fluent software, the flow and temperature distribution under the two heat dissipation schemes are calculated, and the maximum temperature of the inner wall and the pressure distribution of the flow path are compared and analyzed for two different flow channel structures under different driving motor powers. The results show that when the motor power is 80 kW and 90 kW, both runner structures can meet the heat dissipation requirements, but the six-channel runner structure has better heat dissipation effect. When the motor power exceeds 100 kW, only the six-channel flow channel structure can meet the heat dissipation requirements. The four-channel circumferential "Z"-shaped flow channel structure of the casing, during the cooling process, the pressure loss of the flow channel is smaller, and the pressure bearing capacity of the casing is not high. Therefore, the four-channel circumferential "Z" structure can be preferentially used in the cooling scheme of the lower power drive motor
更新日期/Last Update: 2021-12-17