Analysis of Radiated Emission in High-Voltage Junction Box Using Conductive Plastic Material in Electric Vehicles

Electric vehicles commonly incorporate lightweighting measures in various key areas. Recently, the trend extends beyond the body structure, chassis, and suspension to include the use of lightweight materials for Power Electric (PE) Components. This paper specifically analyzes the Radiated Emission(RE) issues that arise when utilizing conductive plastic-the lightweight material-in the high voltage junction box. The paper conducts an analysis and comparison of the radiation emitted by HVPE components and the radiation from cables, including the ground wire. Additionally, study is conducted on how to reduce the radiation noise when using the conductive plastic.