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首页> 外文期刊>International journal of hydrogen energy >Power management system for a fuel cell/battery hybrid vehicle incorporating fuel cell and battery degradation
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Power management system for a fuel cell/battery hybrid vehicle incorporating fuel cell and battery degradation

机译：用于结合了燃料电池和电池退化的燃料电池/电池混合动力车辆的电源管理系统

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摘要

Optimization of fuel cell/battery hybrid vehicle systems has primarily focused on reducing fuel consumption. However, it is also necessary to focus on fuel cell and battery durability as inadequate lifespan is still a major barrier to the commercialization of fuel cell vehicles. Here, we introduce a power management strategy which concurrently accounts for fuel consumption as well as fuel cell and battery degradation. Fuel cell degradation is quantified using a simplified electrochemical model which provides an analytical solution for the decay of the electrochemical surface area (ECSA) in the fuel cell by accounting for the performance loss due to transient power load, start/stop cycles, idling and high power load. The results show that the performance loss based on remaining ECSA matches well with test data in the literature. A validated empirical model is used to relate Lithium-ion battery capacity decay to C-rate. Simulations are then conducted using a typical bus drive cycle to optimize the fuel cell/battery hybrid system. We demonstrate that including these degradation models in the objective function can effectively extend the lifetime of the fuel cell at the expense of higher battery capacity decay resulting in a lower average running cost over the lifetime of the vehicle. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：燃料电池/电池混合动力汽车系统的优化主要集中在降低燃料消耗上。然而，还必须关注燃料电池和电池的耐久性，因为寿命不足仍然是燃料电池汽车商业化的主要障碍。在这里，我们介绍一种电源管理策略，该策略同时考虑了油耗以及燃料电池和电池的退化。使用简化的电化学模型对燃料电池的退化进行量化，该模型通过考虑瞬态功率负载，启动/停止循环，空转和高功率引起的性能损失，为燃料电池中电化学表面积（ECSA）的衰减提供了一种解析解决方案。电源负载。结果表明，基于剩余ECSA的性能损失与文献中的测试数据非常吻合。使用经过验证的经验模型将锂离子电池的容量衰减与C速率相关联。然后使用典型的公交车驾驶周期进行仿真，以优化燃料电池/电池混合动力系统。我们证明，在目标函数中包括这些退化模型可以以延长电池容量衰减为代价，从而有效地延长燃料电池的寿命，从而导致在车辆生命周期内降低平均运行成本。 （C）2019氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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