Investigation of dynamic characteristics for fuel cell mounted on vehicle

Abstract

The purpose of this study was to identify dynamic characteristics of PEMFC (Proton Exchange Membrane Fuel Cell). Fuel cell in the vehicle get damaged consistently in operating condition. The mode shape of the fuel cell was measured by impact test to find out global mode which affect fuel cell durability. The correlation between the torque of joint bolts and the global mode was investigated. The modal characteristics of fuel cell were compared with increasing bolt torque. To predict elastic properties of the fuel cell, the measurement method of effective dynamic properties was investigated. Structural features of cell stacked was considered when measuring properties. Consequently, the mounting conditions of fuel cell in vehicle were proposed considering predicted elastic properties. The result of this study improves the stability of the fuel cell on the vehicle in operating condition.