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충격 및 바운스 특성 양상을 위한 HEV-Relay의 설계
고윤기(Younki Ko),조상순(Sangsoon Cho),허훈(Hoon Huh),이상엽(Sangyoeb Lee),박홍태(Hongtae Park),오일성(Ilsung Oh) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
A HEV-relay plays a significant role as a mechanical switch which determines the operation of a gasoline engine or an electric motor in a hybrid electric vehicle (HEV). The HEV-relay has critical two problems in the operating process. First, the unstable current can occur in the operating process of the HEV-relay due to the severe bounce between moving and fixed electrode. Second, noises occur due to impact between electrodes in HEV-relay. In this research, spring properties such as stiffness and initial compression force, and electrode shape are designed to reduce the bounce time and noises caused by impact between moving and fixed electrode. The operating process of HEV-relay is simulated using LS-DY□A3D as explicit finite element code. The optimum spring properties are determined using the response surface method (RSM) as the design methodology, and the electrode shape is newly designed through the modifying the stiffness of moving and fixed electrode.