Abstract
To ensure a suitable temperature range and temperature difference performance for on-board power battery, the heat transfer characteristics analysis and structural parameter optimization design of cold plate were completed. The research of battery heat generation and cold plate heat transfer mechanism were carried out, and three-dimensional transient heat transfer fluid-solid coupling model for battery and cold plate was also established with the application of Fluent software. Based on the results of multiple numerical simulation analysis and experimental verification of cold plate's heat transfer performance, the optimized design scheme of structure and parameters for cold plate was proposed. The simulation results under typical working conditions show that the battery cold plate could realize the heat dissipation of battery pack rapidly and equably. The average temperature of battery pack is 30.6°C, with the maximum temperature difference of 2.9°C, which could meet the requirements of temperature control for on-board power battery.
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