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<p>Lithium-ion batteries are the power plants of our digital age, supplying energy to smartphones, laptops, electric vehicles, and energy storage systems. However, temperature significantly affects their performance. In this study, a cylindrical lithium-ion battery was simulated within an air-flow cooling chamber to investigate temperature rise and cooling performance. Key battery parameters such as voltage, current, power, and temperature were analyzed under four C-rates: 2.5, 3.5, 4.5, and 5.5. The simulation results show that the maximum temperature rise (<i>T</i><sub>Maximum</sub>) increases from 5.72 K at 2.5C to 20.36 K at 5.5C, while the average temperature rise (<i>T</i><sub>Average</sub>) and minimum temperature rise (<i>T</i><sub>Minimum</sub>) vary from 5.59 K and 5.25 K at 2.5C to 21.79 K and 20.47 K at 5.5C, respectively. Additionally, the voltage range expands with increasing C-rate, from 3.52–3.96 V at 2.5C to 3.38–4.20 V at 5.5C, and the output power reaches its peak negative value at the highest C-rate. These results quantitatively demonstrate the effect of C-rate on thermal and electrochemical performance, providing essential data for designing effective battery thermal management strategies.</p>

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Temperature and C-Rate dependence of \(\hbox {Li}_y\) \(\hbox {Mn}_2\) \(\hbox {O}_4\) and \(\hbox {Li}_x\) \(\hbox {C}_6\)MCMB Lithium-ion battery performance with \(\hbox {LiPF}_6\) electrolyte

  • 期刊论文

  • 发表日期：

    2025年11月17日

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  • Hanieh Zerafati Vahid,
  • Aliasghar Shokri,
  • Fatemeh Shirvani

摘要

Lithium-ion batteries are the power plants of our digital age, supplying energy to smartphones, laptops, electric vehicles, and energy storage systems. However, temperature significantly affects their performance. In this study, a cylindrical lithium-ion battery was simulated within an air-flow cooling chamber to investigate temperature rise and cooling performance. Key battery parameters such as voltage, current, power, and temperature were analyzed under four C-rates: 2.5, 3.5, 4.5, and 5.5. The simulation results show that the maximum temperature rise (TMaximum) increases from 5.72 K at 2.5C to 20.36 K at 5.5C, while the average temperature rise (TAverage) and minimum temperature rise (TMinimum) vary from 5.59 K and 5.25 K at 2.5C to 21.79 K and 20.47 K at 5.5C, respectively. Additionally, the voltage range expands with increasing C-rate, from 3.52–3.96 V at 2.5C to 3.38–4.20 V at 5.5C, and the output power reaches its peak negative value at the highest C-rate. These results quantitatively demonstrate the effect of C-rate on thermal and electrochemical performance, providing essential data for designing effective battery thermal management strategies.