电动汽车电池冷板微小通道结构优化研究*

doi:10.19562/j.chinasae.qcgc.2020.05.016

Abstract

Abstract: In order to optimize the structure of the cold plate of the micro channel of the vehicle battery and explore the interaction mechanism between the flow field and the temperature field in the cold plate flow channel, the optimal layout of the cold plate is first obtained using orthogonal experiments in this paper. By using the Face-Centered Central Composite Design (FCCCD), it is found that when the wavy channel amplitude is 1 mm and the number of cycles is 4, the overall thermal-hydraulic performance of the wavy channel reaches the maximum, which increases by 17.4 % compared to the straight channel. According to CFD analysis, the consistency of the field synergy angle and the channel Nusselt number proves that the field synergy angle theory can be used to explain the enhanced heat transfer in the micro channel. The chaotic advection in the flow channel caused by the curvature of the wavy channel greatly enhances the convective fluid mixing and destroys the shear layer, which separates the main flow and the recirculating flow in the channel, resulting in a heat transfer enhancement

Key words: automotive aerodynamics, wavy channel, field synergy theory, heat transfer enhancement

Wang Jingyu, Yan Wei, Li Song, Hu Xingjun, Sang Tao, Wang Mo. Research on Microchannel Structure Optimization of Electric Vehicle Battery Cold Plate[J].Automotive Engineering, 2020, 42(5): 672-680.

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Research on Microchannel Structure Optimization of Electric Vehicle Battery Cold Plate

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