Scholarlink

<p>Hybrid supercapacitors have significantly increased energy density while maintaining high power, meeting the demands of various applications. However, the increased energy density also brings safety concerns, necessitating greater attention to thermal management systems in practical applications. This paper investigates the performance of hybrid supercapacitors and specifically examines the heat generation characteristics for high-power scenarios. It is found that during the charging process, Ohmic heating diffuses from the electrode connection point to the cell, while during discharging, the temperature at the cathode electrode connection point is the highest, and heat is transferred from the cathode to the anode end. Based on these observations, a temperature monitoring scheme is proposed for thermal management within the module, which specifically measures the temperature at the cathode electrode transpolar sheet of each parallel module. It is demonstrated that the temperature change of the transpolar sheet is synchronized with the temperature at the electrode connection point, with a temperature difference within 3&#xa0;°C, and the transpolar sheet surface temperature exhibits good consistency, within 2&#xa0;°C. Even when a single cell in the module experiences overheating, the transpolar sheet still maintains good temperature synchronization and consistency. This study introduces a novel temperature monitoring scheme for hybrid supercapacitors to address key challenges in energy storage. The innovative methodology enhances temperature management efficiency, which boosts the performance and longevity of energy storage devices. The broader impact includes optimizing operational efficiency and ensuring the safety and reliability of large-scale energy storage 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

Thermal characteristics and management strategies for hybrid supercapacitors during charge and discharge

  • 期刊论文

  • 发表日期：

    2025年4月24日

查看全文
  • Mingxia Wu,
  • Can Zhang,
  • Shengnan Xie

摘要

Hybrid supercapacitors have significantly increased energy density while maintaining high power, meeting the demands of various applications. However, the increased energy density also brings safety concerns, necessitating greater attention to thermal management systems in practical applications. This paper investigates the performance of hybrid supercapacitors and specifically examines the heat generation characteristics for high-power scenarios. It is found that during the charging process, Ohmic heating diffuses from the electrode connection point to the cell, while during discharging, the temperature at the cathode electrode connection point is the highest, and heat is transferred from the cathode to the anode end. Based on these observations, a temperature monitoring scheme is proposed for thermal management within the module, which specifically measures the temperature at the cathode electrode transpolar sheet of each parallel module. It is demonstrated that the temperature change of the transpolar sheet is synchronized with the temperature at the electrode connection point, with a temperature difference within 3 °C, and the transpolar sheet surface temperature exhibits good consistency, within 2 °C. Even when a single cell in the module experiences overheating, the transpolar sheet still maintains good temperature synchronization and consistency. This study introduces a novel temperature monitoring scheme for hybrid supercapacitors to address key challenges in energy storage. The innovative methodology enhances temperature management efficiency, which boosts the performance and longevity of energy storage devices. The broader impact includes optimizing operational efficiency and ensuring the safety and reliability of large-scale energy storage applications.