汽车工程 ›› 2022, Vol. 44 ›› Issue (4): 476-481.doi: 10.19562/j.chinasae.qcgc.2022.04.003

所属专题: 新能源汽车技术-动力电池&燃料电池2022年

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新型动力电池热管理系统设计及性能研究

曾祥兵1,2,谢堃2,张伟2,徐俊超2,张培根1,孙正明1()   

  1. 1.东南大学材料科学与工程学院,江苏省先进金属材料高技术研究重点实验室,南京  211189
    2.奇瑞新能源汽车股份有限公司,芜湖  241000
  • 收稿日期:2021-11-02 修回日期:2022-01-01 出版日期:2022-04-25 发布日期:2022-04-22
  • 通讯作者: 孙正明 E-mail:zmsun@seu.edu.cn

Design and Performance Study of a New Type of Thermal Management System for Traction Battery

Xiangbing Zeng1,2,Kun Xie2,Wei Zhang2,Junchao Xu2,Peigen Zhang1,Zhengming Sun1()   

  1. 1.School of Materials Science and Engineering,Southeast University,Jiangsu Key Laboratory of Advanced;Metallic Materials,Nanjing  211189
    2.Chery New Energy Vehicle Co. ,Ltd. ,Wuhu  241000
  • Received:2021-11-02 Revised:2022-01-01 Online:2022-04-25 Published:2022-04-22
  • Contact: Zhengming Sun E-mail:zmsun@seu.edu.cn

摘要:

为提高动力电池液冷系统和加热系统的冷却和加热效果与安全性,本文中基于理论分析和数值模拟的方法设计了一种新型冷热集成系统。其中,液冷板采用独立式盘绕铝管嵌入铝材基板结构,并设计了流量分区以适应电池模组差异化的冷却需求,而低温条件下电池模组的快速加热,则通过集成PTC热敏电阻模块来实现。实验结果表明,在环境温度为40 ℃条件下进行快速充电和大功率放电循环时,电池包4个分区的最高温度均低于45 ℃,且各分区温差在1 ℃左右;在环境温度为-20 ℃时,内部加热方案可快速将电池包温度由-20 ℃上升至可大电流充电的温度,且其能耗比外部循环加热方式降低41.4%。

关键词: 新能源汽车, 动力电池, 液冷, 加热

Abstract:

In order to enhance the cooling and heating effect and safety of the liquid cooling system and heating system for traction battery, a novel integrated cooling and heating system is designed based on theoretical analysis and numerical simulation. The liquid cooling plate in the system adopts the structure of independent coiled aluminum tube embedded in the aluminum substrate, with four flow subzones designed to suit the discrepant cooling requirements of battery pack and a heating module of thermo-sensitive resistor with positive temperature coefficient is integrated into the system for the rapid heating of battery pack in the condition of low temperature. The results of experiment show that in a cycle of fast charging and high power discharging at an ambient temperature of 40 ℃, the highest temperature of four subzone all lower than 45 ℃, and their temperature difference are all around 1 ℃, and when the ambient temperature falls to -20 ℃, the internal heating scheme can quickly raise the temperature of battery pack from -20 ℃ to the temperature allowing large current charging with an energy consumption 41.4% lower than that with external cycle heating.

Key words: new energy vehicles, traction battery, liquid cooling, heating