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Thermal management investigation for lithium-ion battery module with different phase change materials

机译：具有不同相变材料的锂离子电池模块的热管理研究

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摘要

Lithium-ion batteries, with their advantages of high energy and power density, have attracted much attention for application in electric vehicles and hybrid electric vehicles. However, there have been increasing reports of lithium-ion batteries catching fire and exploding in recent years, so there is a need for a battery thermal management (BTM) system to ensure battery safety performance. In this study, a novel shaped stabilized structure (paraffin/expanded graphite/epoxy) of composited materials was investigated for the 18 650 batteries module. The selected batteries were evaluated at different conditions to ensure the consistency of batteries initially. Then, different kinds of PCM were applied in the batteries module for thermal management, such as PCM 1 (pure paraffin), PCM 2 (EG 20%, paraffin 80%) and PCM 3 (EG 3%, epoxy 47%, paraffin 50%). The maximum temperatures of the battery modules with PCM 2 decreased more than 10%, 12% and 20% at 1C, 3C and 5C discharge rates, respectively, while paraffin mixed with expanded graphite. Furthermore, PCM can be modified by epoxy: the temperature of the module with PCM 3 was 59.79 degrees C while that of the module with PCM 2 was 64.79 degrees C after 30 charge-discharge cycles, revealing that epoxy as a plasticizer can cure the melting paraffin, preventing PCM leakage as the cycle number of the battery increases. The composite materials provide a promising solution to control temperature and decrease temperature difference in batteries modules.
机译：锂离子电池，与他们的高能量密度和功率密度的优势，而备受关注的电动汽车和混合动力电动汽车的应用。然而，已有的锂离子电池着火，并在近几年爆炸报道越来越多，所以有必要对电池热管理（BTM）系统确保电池的安全性能。在这项研究中，一种新颖的形状的稳定化结构（石蜡/膨胀石墨/环氧树脂）复合材料进行了研究为18个650电池模块。所选择的电池在不同条件下进行评价，以确保电池的一致性最初。然后，施加不同种PCM的在电池模块的热管理，诸如PCM 1（纯石蜡），PCM 2（EG 20％，石蜡80％）和PCM 3（例如3％，环氧47％，石蜡50 ％）。与PCM 2的电池模块的最高温度超过10％，12％和在分别1C，3C和5C放电速率，减少20％，而链烷烃混合膨胀石墨。此外，PCM可通过环氧树脂进行改性：用PCM 3的模块的温度为59.79℃下的同时，与PCM 2模块是64.79摄氏度30次充放电循环后，揭示了环氧树脂作为增塑剂可固化熔化石蜡，防止泄漏PCM随着电池的增加的循环数。的复合材料提供了有前途的解决方案，以控制电池模块温度和减小温度差。

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  • 来源
    《RSC Advances》 |2017年第68期|共10页
  • 作者

    Wang Ziyuan; Li Xinxi; Zhang Guoqing; Lv Youfu; Wang Cong; He Fengqi; Yang Chengzhao; Yang Chuxiong;

  • 作者单位

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Mat &

    Energy Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Markham Technol Co Ltd Shunde 528322 Peoples R China;

    Guangdong Markham Technol Co Ltd Shunde 528322 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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