Chinese Journal of Mechanical Engineering >

2018 , Vol. 31 >Issue 3: 53 - 53

DOI: https://doi.org/10.1186/s10033-018-0255-0

Advanced Transportation Equipment

Experimental Investigation on Cooling/ Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management

  • Fei-Fei Liu ,
  • Feng-Chong Lan ,
  • Ji-Qing Chen ,
  • Yi-Gang Li
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  • 1. School of Mechanical & Automotive Engineering, Guangdong Key Labora-tory of Automotive Engineering, South China University of Technology, Guangzhou 510641, China;
    2. School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China

收稿日期: 2016-09-25

  网络出版日期: 2019-07-23

基金资助

Supported by National Natural Science Foundation of China (Grant No. 51775193), Guangdong Provincial Science and Technology Planning Project of China (Grant Nos. 2014B010125001, 2014B010106002, 2016A050503021), and Guangzhou Municipal Science and Technology Planning Project of China (Grant No. 201707020045)

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Experimental Investigation on Cooling/ Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management

  • Fei-Fei Liu ,
  • Feng-Chong Lan ,
  • Ji-Qing Chen ,
  • Yi-Gang Li
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  • 1. School of Mechanical & Automotive Engineering, Guangdong Key Labora-tory of Automotive Engineering, South China University of Technology, Guangzhou 510641, China;
    2. School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China

Received date: 2016-09-25

  Online published: 2019-07-23

Supported by

Supported by National Natural Science Foundation of China (Grant No. 51775193), Guangdong Provincial Science and Technology Planning Project of China (Grant Nos. 2014B010125001, 2014B010106002, 2016A050503021), and Guangzhou Municipal Science and Technology Planning Project of China (Grant No. 201707020045)

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摘要

Due to the heat pipes' transient conduction, phase change and fluid dynamics during cooling/heating with high frequency charging/discharging of batteries, it is crucial to investigate in depth the experimental dynamic thermal characteristics in such complex heat transfer processes for more accurate thermal analysis and design of a BTMS. In this paper, the use of ultra-thin micro heat pipe (UMHP) for thermal management of a lithium-ion battery pack in EVs is explored by experiments to reveal the cooling/heating characteristics of the UMHP pack. The cooling performance is evaluated under different constant discharging and transient heat inputs conditions. And the heating efficiency is assessed under several sub-zero temperatures through heating films with/without UMHPs. Results show that the proposed UMHP BTMS with forced convection can keep the maximum temperature of the pack below 40 ℃ under 1 ~ 3C discharging, and effectively reduced the instant temperature increases and minimize the temperature fluctuation of the pack during transient federal urban driving schedule (FUDS) road conditions. Experimental data also indicate that heating films stuck on the fins of UMHPs brought about adequate high heating efficiency comparing with that stuck on the surface of cells under the same heating power, but has more convenient maintenance and less cost for the BTMS. The experimental dynamic temperature characteristics of UMHP which is found to be a high-efficient and low-energy consumption cooling/heating method for BTMSs, can be performed to guide thermal analysis and optimization of heat pipe BTMSs.

关键词： Electric vehicle; Lithium-ion battery; Thermal management; Ultra-thin micro heat pipe

本文引用格式

Fei-Fei Liu , Feng-Chong Lan , Ji-Qing Chen , Yi-Gang Li . Experimental Investigation on Cooling/ Heating Characteristics of Ultra-Thin Micro Heat Pipe for Electric Vehicle Battery Thermal Management[J]. Chinese Journal of Mechanical Engineering, 2018 , 31(3) : 53 -53 . DOI: 10.1186/s10033-018-0255-0

Abstract

Due to the heat pipes' transient conduction, phase change and fluid dynamics during cooling/heating with high frequency charging/discharging of batteries, it is crucial to investigate in depth the experimental dynamic thermal characteristics in such complex heat transfer processes for more accurate thermal analysis and design of a BTMS. In this paper, the use of ultra-thin micro heat pipe (UMHP) for thermal management of a lithium-ion battery pack in EVs is explored by experiments to reveal the cooling/heating characteristics of the UMHP pack. The cooling performance is evaluated under different constant discharging and transient heat inputs conditions. And the heating efficiency is assessed under several sub-zero temperatures through heating films with/without UMHPs. Results show that the proposed UMHP BTMS with forced convection can keep the maximum temperature of the pack below 40 ℃ under 1 ~ 3C discharging, and effectively reduced the instant temperature increases and minimize the temperature fluctuation of the pack during transient federal urban driving schedule (FUDS) road conditions. Experimental data also indicate that heating films stuck on the fins of UMHPs brought about adequate high heating efficiency comparing with that stuck on the surface of cells under the same heating power, but has more convenient maintenance and less cost for the BTMS. The experimental dynamic temperature characteristics of UMHP which is found to be a high-efficient and low-energy consumption cooling/heating method for BTMSs, can be performed to guide thermal analysis and optimization of heat pipe BTMSs.

Key words： Electric vehicle; Lithium-ion battery; Thermal management; Ultra-thin micro heat pipe

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