배터리 교환형 충전소의 전산유체역학기반 열관리 모형

초록

The demand for electric mobility is rising, but the time it takes to charge batteries remains a concern for users. Rather than reducing the battery charging cost, battery swapping stations(BSS) offer an alternative solution by allowing users to exchange a discharged battery for a fully charged one. For the purpose of thermal management, we develop a computational fluid dynamics(CFD) model, which describe thermal behavior and airflow within the BSS. Heat generation in the batteries was modeled considering Joule heating, and the pressure minor loss at the outlet was estimated using a separate model that provides the same pressure drop due to the fans. The model accuracy was validated with experimental data measured in high-temperature and low-temperature batteries. As a result, in both high- and low- temperature batteries, temporal variations of the CFD model were consistent with experimental results. The proposed CFD model has the potential to provide guidance for improving designs and operating conditions of the BSS, ultimately enhancing thermal management efficiency.

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