汽车工程 ›› 2022, Vol. 44 ›› Issue (4): 482-494.doi: 10.19562/j.chinasae.qcgc.2022.04.004

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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不同充电倍率下锂离子电池组冷却系统结构设计

吴晓刚1,齐明山1,杜玖玉2(),Shchurov N. I.3,Shtang A. A.3   

  1. 1.哈尔滨理工大学,汽车电子驱动控制与系统集成教育部工程研究中心,哈尔滨  150080
    2.清华大学,汽车安全与节能国家重点实验室,北京 100084
    3.俄罗斯新西伯利亚国立技术大学电气工程教研室,俄罗斯 新西伯利亚  630073
  • 收稿日期:2021-11-08 修回日期:2021-12-06 出版日期:2022-04-25 发布日期:2022-04-22
  • 通讯作者: 杜玖玉 E-mail:dujiuyu@tsinghua.edu.cn
  • 基金资助:
    国家自然科学基金(51877057)

Structure Design of Lithium-ion Battery Cooling System at Different Charging Rates

Xiaogang Wu1,Mingshan Qi1,Jiuyu Du2(),N. I. Shchurov3,A. A. Shtang3   

  1. 1.Harbin University of Science and Technology,Automotive Electronic Drive Control and System Integration Engineering Research Center of Ministry of Education,Harbin  150080
    2.Tsinghua University,State Key Laboratory of Automobile Safety and Energy,Beijing  100084
    3.Novosibirsk Technical University,Department of Electrical Engineering Complexes,Novosibirsk  630073,Russia
  • Received:2021-11-08 Revised:2021-12-06 Online:2022-04-25 Published:2022-04-22
  • Contact: Jiuyu Du E-mail:dujiuyu@tsinghua.edu.cn

摘要:

针对锂离子电池组在不同充电倍率下最高温度和单体温度均匀性的要求,在构建动力电池热模型的基础上,以抑制电池组内最高温度和最大温差为目标,仿真分析了液冷板布置位置、流道设计和冷板出入口位置等因素对电池组温度的影响规律。仿真结果表明,本文所设计的冷却系统,在电池组以2C倍率充电时,最高温度可控制在35.5 ℃,温差不超过5 ℃。

关键词: 锂电池, 充电, 冷却系统, 温度均匀性

Abstract:

Aiming at the requirements of highest temperature and temperature evenness on lithium-ion battery pack at different charging rates, the thermal model for traction battery is constructed and a simulation is conducted with suppressing the highest temperature and maximum temperature difference as objectives to analyze the effects of the arrangement of liquid cooling plates, flow path design and the position of cooling inlet and outlet on the thermal status of battery pack. The results of simulation show that with the cooling system designed, the highest temperature and maximum temperature difference of battery pack can be controlled at below 35.5 ℃ and 5 ℃ respectively at a charging rate of 2C.

Key words: lithium battery, charging, cooling system, temperature evenness