Hybrid Fuel Cell Power Train Development Considering Electrochemical Power Source Degradation

本研究的目的是通过可靠性工程过程开发聚合物膜（PEM）燃料电池堆和燃料电池混合动力汽车动力系统的创新材料、装配配置和操作模式。具体而言，本研究旨在建立聚合物膜（PEM）燃料电池堆和燃料电池动力系统的可靠性和组件有效性模型，包括失效模式与材料降解现象的联系。随着质子交换膜燃料电池在2015年在汽车上的商业化应用，了解其降解和失效机制的需求变得更加迫切。总体方法是首先在单细胞水平上建立失效模式相关性和模型；然后将这些模型用于堆栈生命周期模型的开发，最后将模型扩展到实际的车辆混合动力总成模型和其他应用中。信息和建模将允许诊断和预测电化学电源的寿命，并促进“基于模型的设计”方法。了解它们在生命初期和生命末期（EOL）的表现是至关重要的。消费者对汽车性能、效率、续航里程、寿命和成本的期望将受到动力系统配置和控制策略的极大影响。控制策略必须能够适应车辆在整个生命周期内的行驶周期、环境条件和电化学电源健康状态（SOH）。

The objective of this research is to develop innovative materials, assembly configuration and operation modes for polymer membrane (PEM) fuel cell stacks and fuel cell hybrid vehicle power trains through a reliability engineering process. Specifically this research is to develop reliability and component effectiveness models for polymer membrane (PEM) fuel cell stacks, and fuel cell power trains including linkage of the failure modes to material degradation phenomenon. As PEM fuel cells approach commercialization in automotive applications in 2015, the need to understand degradation and failure mechanisms is even greater. The overall approach is to develop failure mode correlations and models at the single cell level first; then to use these models in the development of stack life cycle models, and finally to scale up model into actual hybrid power train models for vehicles and other applications. Information and modelling will allow for diagnosis and prediction of the life of the electrochemical power sources, and facilitate a 'model based design' approach. It will be critical to understand their performance at both beginning of life and end of life (EOL). Consumer expectations such a vehicle performance, efficiency, range, life and cost will be greatly affected by power train configurations and control strategies. The control strategies must be able to adapt to the vehicle's drive cycle, environmental condition, and electrochemical power source state of health (SOH) over the life of the vehicle.