A vein-bionic design for optimizing heat-dissipation in liquid-cooling plates for EV battery packs

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ID: 332159
2026
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Abstract
Abstract Electric vehicles (EV) battery packs consist of numerous cells, and the heat-generation rate varies with cell positions. Conventional liquid-cooling plates are generally unable to provide targeted cooling, resulting in poor temperature uniformity across the battery pack. Based on the influence of cell temperature rise and the characteristic parameters of liquid-cooling plates on cell heat-transfer performance, this study proposes a flow-channel calculation method for achieving targeted heat-dissipation performance. The core innovation is a regionalized design method that accounts for the different cooling needs of individual battery cell and uses a bionic vein structure to adaptively match the flow-channel width. Inspired by the hierarchical venation of heat-resistant plants, a novel vein-like liquid-cooling plate for battery packs is developed, and a heat-transfer experimental platform is built to calibrate the proposed numerical model. The heat-dissipation performance of the proposed liquid-cooling plate is then compared with that of a traditional parallel-channel liquid-cooling plate through numerical simulations, and the mechanism by which the flow-channel angle affects the overall performance of the plate is investigated. The results show that a smaller flow-channel angle reduces vortices at the junction between the main and branch channels, mitigates flow separation, and decreases the pressure drop in the channels. The proposed bionic liquid-cooling plate exhibits low flow resistance and good temperature uniformity, maintaining the temperature difference of the battery pack within 3 K. This study offers theoretical support for low-energy thermal management in new-energy battery packs.
Reference Key
openalex_W7221575348 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Shuichang Liu, Shengong Pan, Zhang Yong, He Liu, Yunbo Jiang, Yuke Lian
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Journal Transportation Safety and Environment
Year 2026
DOI
10.1093/tse/tdag029
URL
https://doi.org/10.1093/tse/tdag029
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