电动汽车直流充电桩散热系统优化分析

doi:10.11985/2018.05.002

摘要/Abstract

摘要：

为解决充电桩在输出功率增加、内部结构复杂和室外工作环境恶劣等新需求条件下散热难的问题,对充电桩进行热特性分析具有一定的必要性。本文以150kW直流充电桩为研究对象,建立其热特性模型。利用有限体积法对强迫风冷充电桩内的流场和温度场进行热仿真分析,并且对系统通风冷却方案进行优化,对比分析了实际通风和改进通风方案下充电桩的散热效果,进一步对桩体风扇风量和输出功率等因素对充电桩温度场的影响进行研究。结果表明：改进通风优化方案更有利于减少风阻,加快系统散热,为直流充电桩产品开发提供理论指导。

关键词: 充电桩, 有限体积法, 流场, 温度场, 热仿真

Abstract:

In order to solve the problem of difficult steadying heat dissipation new demand for charging pile, which is caused by the increasing output power, complex internal structure and poor outdoor working environment, thermal analysis is highly necessary. This paper takes 150kW DC charging pile for research object, the thermal characteristic model of DC charging pile is established. The flow field and temperature field in the forced air cooled charging pile are simulated by finite volume method. At the same time, the ventilation and cooling scheme is optimized. The heat dissipation effect of charging pile under actual ventilation and improved ventilation scheme is compared and analyzed. The improved ventilation scheme is more favorable to the system heat dissipation by simulation analysis. Further more, the influence of the fan volume and the output power on the temperature field of the charging pile is studied. The results show that the improved ventilation optimization scheme is more conducive to reducing windage resistance and accelerating system heat dissipation, and provides theoretical guidance for the development of DC charging pile.

Key words: Charging pile, finite volume method, flow field, temperature field, thermal simulation

中图分类号:

TM501

侯春光,唐帅,高有华,韩颖,曹云东. 电动汽车直流充电桩散热系统优化分析[J]. 电气工程学报, 2018, 13(5): 8-13.

Hou Chunguang,Tang Shuai,Gao Youhua,Han ying,Cao Yundong. Optimization Analysis of Heat Dissipation System for DC Charging Pile of Electric Vehicle[J]. Journal of Electrical Engineering, 2018, 13(5): 8-13.

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