储能科学与技术 ›› 2023, Vol. 12 ›› Issue (9): 2954-2961.doi: 10.19799/j.cnki.2095-4239.2023.0365

• 储能测试与评价 • 上一篇    下一篇

海拔高度对储能锂电池包强制风冷系统影响的热仿真分析及优化设计

李岳峰1,2(), 韦银涛1,2, 彭宪州1,2, 项峰1,2, 王杭烽1,2, 孙勇1,2, 徐卫潘1,2, 黄文强1,2   

  1. 1.浙江运达风电股份有限公司,浙江 杭州 310012
    2.浙江省风力发电技术重点实验室,浙江 杭州 310000
  • 收稿日期:2023-05-29 修回日期:2023-06-09 出版日期:2023-09-05 发布日期:2023-09-16
  • 通讯作者: 李岳峰 E-mail:lyf0304@mail.ustc.edu.cn
  • 作者简介:李岳峰(1995—),男,博士,高级工程师,研究方向为储能、发电机热管理及涡轮叶片主动热防护技术,E-mail: lyf0304@mail.ustc.edu.cn
  • 基金资助:
    浙江省科学技术厅项目(2023C01123)

Thermal simulation analysis and optimal design for the influence of altitude on the forced air cooling system for energy storage lithium-ion battery pack

Yuefeng LI1,2(), Yintao Wei1,2, Xianzhou PENG1,2, Feng XIANG1,2, Hangfeng WANG1,2, Yong SUN1,2, Weipan XU1,2, Wenqiang HUANG1,2   

  1. 1.Zhejiang Windey Co. , Ltd. , Hangzhou 310012, Zhejiang, China
    2.Key Laboratory of Wind Power Technology of Zhejiang Province, Hangzhou 310000, Zhejiang, China
  • Received:2023-05-29 Revised:2023-06-09 Online:2023-09-05 Published:2023-09-16
  • Contact: Yuefeng LI E-mail:lyf0304@mail.ustc.edu.cn

摘要:

自然条件恶劣的高海拔地区对储能设备的环境适应性提出了严峻的挑战。而作为储能设备核心的锂电池包,因其在工作过程中会大量产热导致温升、温差过高,因此需要实施严格的热管理方案。显然,海拔高度的变化将直接对锂电池包的散热性能产生影响。因此,为了评估储能锂电池包在不同海拔工况下的热特性,本工作以某强制风冷系统为研究对象,首先阐述了海拔高度变化对于电池系统参数的具体影响,接着通过数值模拟探究了海拔高度从0~4000 m变化对于电池温度特性的影响,最后针对高海拔工况提出散热结构的优化方案。结果表明:海拔高度变化主要是通过改变空气参数及风扇特性从而影响风冷系统的热特性;随着海拔高度的提升,电芯温升和温差均有不同程度增加;且当海拔高度高于1000 m后,温升增加率较高;在高海拔工况下,通过增加进风口面积和提升风扇转速的优化方案可以有效降低系统电池的温升和温差。本工作为今后储能电池系统在高海拔的工程应用提供详细的温度数据、规律及优化参考。

关键词: 储能锂电池, 热特性, 海拔高度, 优化设计

Abstract:

The environmental adaptability of energy storage equipment is severely hampered by high altitude and harsh natural circumstances. Lithium battery packs, as the core of energy storage equipment,require stringent thermal management due to high-temperature rise and temperature differences caused by large amounts of heat generation during operation. It is obvious that changes in altitude directly influence the thermal characteristics of the lithium battery pack. In evaluating the thermal characteristics of the energy storage lithium-ion battery under different altitude conditions by adopting a forced air cooling system, this research elucidated the specific effects of altitude on the battery system parameters, investigated the influence of altitude (0—4000 m) on the temperature characteristics of the battery, and then proposed an optimum scheme for the heat-dissipating structures at high altitude condition. The results showed that a change in altitude influences the thermal characteristics of the forced air cooling system by altering air parameters and fan characteristics. The temperature rise and difference of cells increase in varying degrees with altitude, and the rate of temperature increaseis relatively high after 1000 m. Under high altitude conditions, optimization of increasing the inlet area and fan speed decreases the temperature rise and difference for the system battery. This researchprovides detailed temperature regular and optimization references for future engineering applications of energy storage battery systems under high altitude conditions.

Key words: energy storage lithium-ions battery, thermal characteristics, altitude, optimal design

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