摘要
燃料电池汽车动力系统的动力经济性会随着燃料电池的老化发生变化。这种变化不仅与燃料电池堆的输出功率衰减有关,还受到辅助系统功耗占比增加的影响,是功率输出调节必须考虑的因素。利用Amesim软件为燃料电池系统的各个部件构建功率计算模型,使用燃料电池半经验模型及零变量老化因子,生成电堆老化后的极化曲线,建立燃料电池系统全生命周期的功率计算模型,探讨在老化过程中的输出性能变化。随着电堆老化时间变化,在功率控制策略中需要对电堆最大允许工作电流密度进行相应的限制,避免燃料电池系统在老化过程中的闭环功率控制策略失效。这为燃料电池汽车功率控制提供了理论依据。
The power economy of a fuel cell vehicle’s power system changes as the fuel cell ages.This change is not only related to the output power degradation of the fuel cell stack,but also influenced by the increased proportion of auxiliary system power consumption.This factor must be considered in the power output regulation.A power calculation model for the various components of the fuel cell system is constructed using Amesim software.By applying a semi-empirical model for the fuel cell and zero-variable aging factors,the polarization curve after stack aging is generated,thereby establishing a power calculation model for the entire lifecycle of the fuel cell system.The variation in output performance during aging is investigated.With the change in stack aging time,it is necessary to impose corresponding limits on the maximum allowable operating current density in the power control strategy to prevent failure of the closed-loop power control during the aging process.This provides a theoretical basis for power control in fuel cell vehicles.
作者
查少平
杜常清
ZHA Shaoping;DU Changqing(School of Automotive Engineering,Wuhan University of Technology,Wuhan 430070,Hubei,China;Forward-Looking Technology Products Department,Jianghuai Automobile Technology Center,Hefei 230092,Anhui,China)
出处
《电池》
北大核心
2025年第3期437-444,共8页
Battery Bimonthly
基金
国家重点研发计划(2022YFB4003703)。
关键词
燃料电池系统
老化
功率模型
寿命预测
动力系统
输出性能
fuel cell system
aging
power model
lifetime prediction
power system
output performance
作者简介
查少平(1990-),男,安徽人,江淮汽车技术中心新技术研究工程师,武汉理工大学汽车工程学院硕士生,研究方向:新能源动力系统和智能控制;通信作者:杜常清(1975-),男,四川人,武汉理工大学汽车工程学院教授,博士生导师,研究方向:车辆新能源及动力装置。
