主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 48 ›› Issue (2): 29-33.DOI: 10.16638/j.cnki.1671-7988.2023.02.006

• 新能源汽车 • 上一篇    

PHEV 电池包热管理系统设计优化与仿真分析

吴政江，王长江，鲍添增   

  1. 浙江衡远新能源科技有限公司
  • 发布日期:2023-02-01
  • 通讯作者: 吴政江
  • 作者简介:吴政江（1996—），男，硕士，工程师，研究方向为新能源电池热管理系统，E-mail:Zhengjiang.Wu@Geely.com。

Design Optimization and Simulation Analysis of PHEV Battery Pack Thermal Management System

WU Zhengjiang, WANG Changjiang, BAO Tianzeng   

  1. Zhejiang Hengyuan New Energy Technology Company Limited
  • Published:2023-02-01
  • Contact: WU Zhengjiang

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摘要： 为实现电池包热管理系统低能耗和高效率散热的目的，文章通过流体动力学（CFD） 仿真及实验对某插电式混合动力汽车（PHEV）乘用车电池包热管理系统进行优化研究。电池 包热管理系统采用液冷散热，流场压力损失设计目标值为 27 kPa。初始方案中，流场压力损 失实测值约为 60 kPa，CFD 仿真分析表明，液冷系统流场进出口是产生压力损失的主要部件； 采用增大进出口管径的方法对液冷系统进行优化，仿真和实验结果表明，优化后的液冷系统 压力损失减小至 26 kPa 左右；液冷系统流场优化后，对电池包散热特性进行仿真和实验分析， 结果表明，在 67.6 kW 工况下电池包最高温度为 53.2 ℃，低于目标值 55 ℃。综合分析可以 得出结论，优化后的电池包液冷系统各项指标达到目标状态。

关键词: 插电式混合动力汽车（PHEV）；动力电池；热管理系统；计算流体动力学（CFD）； 设计优化

Abstract: In order to realize the purpose of low-energy and high-performance heat dissipation of battery pack thermal management system, this paper studied the battery pack thermal management system of a plug-in hybrid electric vehicle (PHEV) by computational fluid dynamics (CFD) simulation and experiment to optimize the research. The battery pack thermal management system adopts liquid cooling, and the design target of pressure loss is 27 kPa. For initial plan, the measured value of pressure loss is about 60 kPa, and CFD simulation analysis indicated that inlet and outlet of cooling system were key parts for pressure loss. Liquid cooling system was optimized by enlargement pipe diameter for inlet and outlet, simulation and experiment results showed that the pressure loss of the optimized liquid cooling system is reduced to about 26 kPa. After the flow field optimization of the liquid cooling system, results showed that the maximum temperature of battery pack under 67.6 kW was 53.2 ℃, which is lower than target 55 ℃. Comprehensive analysis can conclude that optimized indicators of the battery pack liquid cooling system reach the target state.

Key words: Plug-in hybrid electric vehicle (PHEV); Power battery; Thermal management system; Computational fluid dynamics (CFD); Design optimization