Hybrid Fuel Cell Power Train Development Considering Electrochemical Power Source Degradation

这项研究的目标是通过可靠性工程过程开发聚合物膜(PEM)燃料电池组和燃料电池混合动力汽车动力系统的创新材料、组装结构和运行模式。具体地说，这项研究是为聚合物膜(PEM)燃料电池组和燃料电池动力系统开发可靠性和部件有效性模型，包括将失效模式与材料降解现象联系起来。随着2015年PEM燃料电池在汽车应用中接近商业化，了解退化和失效机理的必要性更加迫切。总体方法是首先在单电池级别建立故障模式关联和模型；然后将这些模型用于电堆生命周期模型的开发，最后将模型放大到车辆和其他应用的实际混合动力系统模型中。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)的表现至关重要。动力总成配置和控制策略将极大地影响消费者对车辆的性能、效率、续航能力、寿命和成本等方面的期望。控制策略必须能够适应车辆的行驶周期、环境条件和车辆整个寿命期间的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.