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Influence of Channel Heights on Li-ion Battery Thermal Management Cooling Performance System

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The temperature of the battery pack is regulated using a Battery Thermal Management System (BTMS). In this study, a Computational Fluid Dynamics (CFD) method was employed to improve the intake and output channel heights of the traditional Z and U-type BTMS to produce different flow and temperature distributions. Geometry of 6×145×225 mm was used with channel intake and output height, length and width set to 20, 100 and 3 mm, respectively. Channel height varied from 20 to 25 mm. The results show that increasing the intake and output channel heights improves the performance of regular Z-type flow cooling. For this study, the best performance is height with 25 mm intake and 25 mm output channel height. The peak temperature dropped by 11.2 °C while its power consumption and peak difference in temperature reduced by 25% and 5.33 °C, respectively. The cooling effectiveness of a standard U-type flow BTMS is enhanced by increasing the intake and output channel heights to 25 mm. Accordingly, the peak temperature decreased by 8.92 °C, the peak temperature differential diminished by 2.94 °C, and the power usage decreased by 16%. Generally, the outcomes show that intake and output channel height are crucial for BTMS optimization.
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BTMS; Channel Height; Peak Temperature; Peak Temperature Difference; Power Consumption

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