CIESC Journal ›› 2021, Vol. 72 ›› Issue (S1): 494-502.DOI: 10.11949/0438-1157.20201487

• Energy and environmental engineering • Previous Articles     Next Articles

Thermodynamic analysis of performance of integrated thermal management system for pure electric vehicle

LIANG Kunfeng1(),WANG Moran1,GAO Meijie1,LYU Zhenwei2,XU Hongyu1,DONG Bin1,GAO Fengling1   

  1. 1.Vehicle & Transportation Engineering Institute, Henan University of Science and Technology, Luoyang 471003, Henan, China
    2.School of Automotive Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
  • Received:2020-10-28 Revised:2021-01-12 Online:2021-06-20 Published:2021-06-20
  • Contact: LIANG Kunfeng

纯电动车集成热管理系统性能的热力学分析

梁坤峰1(),王莫然1,高美洁1,吕振伟2,徐红玉1,董彬1,高凤玲1   

  1. 1.河南科技大学车辆与交通工程学院,河南 洛阳 471003
    2.武汉理工大学汽车工程学院,湖北 武汉 430070
  • 通讯作者: 梁坤峰
  • 作者简介:梁坤峰(1975—),男,博士,教授,lkf@haust.edu.cn
  • 基金资助:
    国家自然科学基金项目(51876055);河南省科技攻关项目(212102210242)

Abstract:

The pure electric vehicle integrated thermal management (ITM) system could effectively improve the energy efficiency of vehicles. However, the structure of the ITM system considering the thermal requirements of battery and cabin is complex. Aiming at the series and parallel configuration of the ITM system, the system simulation model is built based on AMESim software, and the performance of the two ITM systems is compared and analyzed from the perspective of thermodynamic energy and exergy analysis. The results show that: the coefficient of performance and exergy efficiency of the series system are significantly higher than those of the parallel system, with an average increase of 7.6% and 23.6% in the refrigeration mode and 13% and 7.6% in the heat pump mode, respectively. With the increase of compressor speed, the total exergy loss of components in the two systems increases significantly. The exergy loss of compressor and outdoor heat exchanger became the main exergy loss. In addition, the exergy loss of electronic expansion valve accounts for a large proportion in the parallel system.

Key words: pure electric vehicle, integrated thermal management, exergy loss, lithium-ion battery, air conditioning

摘要:

纯电动车集成热管理(ITM)系统能有效提高车辆的能量利用效率,然而兼顾电池、客舱热需求的集成热管理系统结构复杂,针对ITM系统的串联和并联两种构成形式,基于AMESim软件搭建系统仿真模型,从热力学的能量和角度比较分析两种系统的性能。结果表明:串联系统的性能系数和效率均明显高于并联系统,制冷模式下,分别平均高7.6%、23.6%;热泵模式下,分别平均高13%、7.6%。随着压缩机转速的增大,两种系统的部件总损失均明显增大,压缩机和室外换热器的损失成为主要损失,此外在并联系统中电子膨胀阀的损失占比较大。

关键词: 纯电动汽车, 集成热管理, 损失, 锂离子电池, 空调

CLC Number: