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<p>As the core component of the power battery thermal management system, the internal flow channel structure of the liquid cooling plate directly determines its heat transfer performance. This paper proposes a structural design for a ribbed liquid cooling plate based on a lattice arrangement, and analyzes the impact of fluid mixing effects induced by the rib structure on heat transfer performance. An experimental test setup for a multi-condition variable-flow battery module was designed to measure the temperatures of five batteries under various discharge rates and flow rates, with the aim of calibrating the NTGK heat generation model parameters and verifying the accuracy of the numerical method. A thermal-fluid-solid coupling model was employed to analyze the influence characteristics of rib structure parameters on heat transfer performance. Furthermore, a multi-objective optimization analysis of the key parameters of the flow channel structure was conducted using the orthogonal experiments and the NSGA-II genetic algorithm. The research results indicate that the rib structure in the flow channel effectively promotes fluid mixing, thereby strengthening the convective heat transfer performance between the coolant and the liquid cooling plate. Compared to the smooth flow channel, under the 3&#xa0;C discharge rate, the optimized ribbed liquid cooling plate, reduced the maximum temperature of the battery from 39.28 ℃ to 37.22 ℃, and decreased the maximum temperature difference from 16.28 ℃ to 15.06 ℃, respectively. This represents reduction of 2.06 ℃ and 1.22 ℃, respectively, with percentage decreases of 5.24% and 7.49% demonstrating outstanding heat dissipation performance. The findings of this study provide solid theoretical support for the design and optimization of liquid cooling plate for power batteries.</p>

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Heat transfer feature and structural betterment for a new ribbed liquid cooling plate

  • 期刊论文

  • 发表日期：

    2026年3月2日

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  • Junjie Chen,
  • Longfei Ma,
  • Yufeng Gan,
  • Qianglong Zhou,
  • Zhen Liu,
  • Huawei Wu

摘要

As the core component of the power battery thermal management system, the internal flow channel structure of the liquid cooling plate directly determines its heat transfer performance. This paper proposes a structural design for a ribbed liquid cooling plate based on a lattice arrangement, and analyzes the impact of fluid mixing effects induced by the rib structure on heat transfer performance. An experimental test setup for a multi-condition variable-flow battery module was designed to measure the temperatures of five batteries under various discharge rates and flow rates, with the aim of calibrating the NTGK heat generation model parameters and verifying the accuracy of the numerical method. A thermal-fluid-solid coupling model was employed to analyze the influence characteristics of rib structure parameters on heat transfer performance. Furthermore, a multi-objective optimization analysis of the key parameters of the flow channel structure was conducted using the orthogonal experiments and the NSGA-II genetic algorithm. The research results indicate that the rib structure in the flow channel effectively promotes fluid mixing, thereby strengthening the convective heat transfer performance between the coolant and the liquid cooling plate. Compared to the smooth flow channel, under the 3 C discharge rate, the optimized ribbed liquid cooling plate, reduced the maximum temperature of the battery from 39.28 ℃ to 37.22 ℃, and decreased the maximum temperature difference from 16.28 ℃ to 15.06 ℃, respectively. This represents reduction of 2.06 ℃ and 1.22 ℃, respectively, with percentage decreases of 5.24% and 7.49% demonstrating outstanding heat dissipation performance. The findings of this study provide solid theoretical support for the design and optimization of liquid cooling plate for power batteries.