电池(电)
热失控
材料科学
内阻
锂离子电池
吞吐量
汽车工程
核工程
过程(计算)
工作温度
集电器
电极
锂(药物)
计算机科学
电气工程
工程类
电信
物理
内分泌学
物理化学
操作系统
功率(物理)
化学
医学
量子力学
无线
作者
Xuan Ling,Qian Zhang,Yong Xiang,Jun Song Chen,Xiaoli Peng,Xiaoran Hu
标识
DOI:10.1016/j.ijheatmasstransfer.2023.124383
摘要
The high-energy-density lithium-ion batteries (LIBs) are susceptible to thermal runaway and lead to safety incidents. Monitoring the internal temperature of LIBs is a promising way to forewarn its thermal runaway. However, the current external temperature sensors show high delay and poor accuracy, and the built-in temperature sensors are incompatible with the assembly process and may damage the battery. Thus, a reliable real-time internal battery temperature monitoring sensor is desired. In this study, a high-throughput selected thin-film resistance temperature detector (TFRTD) is proposed. The TFRTD is integrated between the collectors of the pouch LIB, which is compatible with the battery assembly process. The built-in TFRTD responds 82% faster and measures 33% more accurately than an external RTD, allowing real-time monitoring of internal battery temperature at different current rates. With a discharge rate of 0.5 C, the internal temperature can be monitored to be 0.57 °C higher than the external temperature in a battery with a capacity of only 0.1 Ah. Cycling tests show that the battery with a built-in TFRTD has a capacity retention rate of 92.71% after 100 cycles, and the TFRTD has a limited impact on battery performance. Therefore, the developed novel TFRTD can be used to analyze the battery heating process under different conditions and has some potential for engineering applications.
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