Abstract
This study examines the coolant and heat flows in electric vehicle (EV) battery pack that employs a thermal interface material (TIM). The overall temperature distribution of the battery pack that consists of many battery modules is precomputed based on the cooling circuit design, and the battery module that is most strongly influenced by cooling circuit is selected. To investigate the detailed effects of the TIM’s performance, we measure its thermal conductivity based on its compression ratio and consider the detailed shape of the battery cell module for incorporating the TIM’s thermal conductivity in the battery assembly. The TIM, which functions as part of the cooling system within the confined space of the battery cell module, is included in the CFD analysis to assess the effect of thermal conductivity variation resulting from the compression ratio of the TIM on the cooling performance of the battery pack. Various cases of confined spaces in the battery module are compared to optimize the cooling efficiency of the EV battery pack.
Abstract
This study examines the coolant and heat flows in electric vehicle (EV) battery pack that employs a thermal interface material (TIM). The overall temperature distribution of the battery pack that consists of many battery modules is precomputed based on the cooling circuit design, and the battery module that is most strongly influenced by cooling circuit is selected. To investigate the detailed effects of the TIM’s performance, we measure its thermal conductivity based on its compression ratio and consider the detailed shape of the battery cell module for incorporating the TIM’s thermal conductivity in the battery assembly. The TIM, which functions as part of the cooling system within the confined space of the battery cell module, is included in the CFD analysis to assess the effect of thermal conductivity variation resulting from the compression ratio of the TIM on the cooling performance of the battery pack. Various cases of confined spaces in the battery module are compared to optimize the cooling efficiency of the EV battery pack. Read More
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