Scholarlink

<p>Lithium-ion batteries generate excessive heat under high discharge rates, leading to performance degradation and safety risks. Conventional air cooling systems struggle with uniform heat dissipation, necessitating advanced cooling solutions. This study investigates the thermal management of cylindrical and prismatic lithium-ion cells under fast discharge rates (2C) using natural air cooling and ester oil-based immersion cooling in steady-state convection. The thermal performance was assessed by analyzing the maximum cell temperature and temperature uniformity within the cells. The cylindrical cell (3.7&#xa0;V, 2.6 Ah) and prismatic cell (3.2&#xa0;V, 40 Ah) were tested at an ambient temperature of 25&#xa0;°C, with the experimental setup incorporating temperature measurements at the body, positive tab, and negative tab of each cell. Results demonstrate that ester oil immersion cooling significantly reduces the maximum cell temperature and minimizes temperature gradients compared to natural air cooling. The geometric shape of the cells also plays a crucial role in cooling efficiency, with cylindrical cells showing more uniform cooling due to their symmetric geometry, while prismatic cells exhibit localized heating, especially at the tabs. These findings highlight the importance of effective cooling strategies to enhance the thermal performance and safety of Li-ion batteries in high-power applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evaluation of cooling effectiveness for cylindrical and prismatic batteries using oil immersion cooling system

  • 期刊论文

  • 发表日期：

    2025年5月26日

查看全文
  • Hemavathi S,
  • Arun Kumar A

摘要

Lithium-ion batteries generate excessive heat under high discharge rates, leading to performance degradation and safety risks. Conventional air cooling systems struggle with uniform heat dissipation, necessitating advanced cooling solutions. This study investigates the thermal management of cylindrical and prismatic lithium-ion cells under fast discharge rates (2C) using natural air cooling and ester oil-based immersion cooling in steady-state convection. The thermal performance was assessed by analyzing the maximum cell temperature and temperature uniformity within the cells. The cylindrical cell (3.7 V, 2.6 Ah) and prismatic cell (3.2 V, 40 Ah) were tested at an ambient temperature of 25 °C, with the experimental setup incorporating temperature measurements at the body, positive tab, and negative tab of each cell. Results demonstrate that ester oil immersion cooling significantly reduces the maximum cell temperature and minimizes temperature gradients compared to natural air cooling. The geometric shape of the cells also plays a crucial role in cooling efficiency, with cylindrical cells showing more uniform cooling due to their symmetric geometry, while prismatic cells exhibit localized heating, especially at the tabs. These findings highlight the importance of effective cooling strategies to enhance the thermal performance and safety of Li-ion batteries in high-power applications.