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Battery Thermal Management System (BTMS) is designed for energy storage batteries to ensure optimal performance during high-power operation. It regulates the battery temperature, reduces the risk of thermal runaway and improves safety, thus safeguarding the operation of the battery. A BTMS using U-shaped flat heat pipe (UFHP) combined with a submerged liquid channel is established in this paper, and the temperature control behavior of the UFHP BTMS is investigated by numerical simulation with a number of influencing factors including working fluid, water flow rate and inlet water temperature. The results indicate that when the water flow rate is 0.2 L/min and the inlet water temperature is 25 ℃, the maximum temperature of the battery at 0.5 C, 1 C, and 1.5 C rates with UFHP BTMS decreases by 37.77%, 51.91%, and 58.17%, respectively, versus the battery without UFHP BTMS. In battery heating conditions, the minimum temperature of the battery with UFHP BTMS increases from 0 ℃ to 15 ℃ at 320 s of discharge, 93.44% earlier than the battery without UFHP BTMS.

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Numerical Analysis on the Cooling Performance of the Battery Thermal Management System Using U-Shaped Flat Heat Pipe

  • 会议论文

  • 发表日期：

    2025年

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  • Xinyi Dong,
  • Yijia Dai,
  • Zhixiong Shao,
  • Zaiguo Fu,
  • Qunzhi Zhu

摘要

Battery Thermal Management System (BTMS) is designed for energy storage batteries to ensure optimal performance during high-power operation. It regulates the battery temperature, reduces the risk of thermal runaway and improves safety, thus safeguarding the operation of the battery. A BTMS using U-shaped flat heat pipe (UFHP) combined with a submerged liquid channel is established in this paper, and the temperature control behavior of the UFHP BTMS is investigated by numerical simulation with a number of influencing factors including working fluid, water flow rate and inlet water temperature. The results indicate that when the water flow rate is 0.2 L/min and the inlet water temperature is 25 ℃, the maximum temperature of the battery at 0.5 C, 1 C, and 1.5 C rates with UFHP BTMS decreases by 37.77%, 51.91%, and 58.17%, respectively, versus the battery without UFHP BTMS. In battery heating conditions, the minimum temperature of the battery with UFHP BTMS increases from 0 ℃ to 15 ℃ at 320 s of discharge, 93.44% earlier than the battery without UFHP BTMS.