Double-sided cooling EV Inverter assembly

As the power density of power modules in electric vehicles continues to increase, there is a growing demand for advanced thermal management solutions. Jet impingement cooling, which can focus cooling performance on specific areas and achieve high heat transfer coefficients of approximately 60,000 W/m²K locally, is being actively researched as a promising approach that meets the thermal management requirements of power modules. However, while most studies have focused on single-module, single-sided cooling, actual electric vehicles utilize multiple modules configured in parallel as a single system, with both sides of the packaging available for cooling. In this study, we aim to address the challenges associated with extending from a single-module, single-sided cooling system to a multi-module, double-sided cooling system, such as flow imbalance and performance degradation due to crossflow. Our design approach emphasizes resolving these issues to enhance the overall thermal management performance.