基于固态储氢与燃料电池耦合的车载氢能源系统建模与特性分析  

Modeling and Performance Evaluation of the MH-PEM Hydrogen Power System for Vehicle Use

作　　者：王晗 朱丹[1] WANG Han;ZHU Dan(Chang’an University,Xi’an 710064,China)

机构地区：[1]长安大学,西安710064

出　　处：《汽车工程学报》2024年第4期631-641,共11页Chinese Journal of Automotive Engineering

基　　金：国家自然科学基金青年项目(52202462);国家重点研发计划项目(SQ2021YFE0192900);中国博士后科学基金面上项目(2022M710484);陕西省自然科学基础研究计划项目(2022JQ-501);中央高校高新技术研究支持计划项目(300102224208)。

摘　　要：探讨了一种使用金属氢化物储氢罐和质子交换膜燃料电池的车载氢能源系统,旨在通过数学建模和工况测试评估氢能源系统内部的热量耦合效应。基于热交换系统结构和换热特性提出了氢能源系统多物理场模型,又基于增程式燃料电池物流车运行工况进行了数值模拟和试验验证。结果表明,所提出的数学模型能准确表征车载氢能源系统的动态特性,功率响应与温度动态变化具有显著的一致性。借助热交换系统提供热量补充,低温条件下固态储氢罐释氢速度加快,提高氢能源系统的动态响应速度和能源利用效率。研究结果可用于基于固态储氢与燃料电池耦合的氢能源系统最优尺寸设计、温度控制和能量管理策略设计。The performance of the hydrogen power system is a critical factor in the design of fuel cell electric vehicles,as it includes the device's characteristics,control effectiveness,and energy management outcomes.This study investigated a typical hydrogen power system that uses a metal hydride(MH)hydrogen storage tank and a proton exchange membrane(PEM)fuel cell.The aim was to evaluate the thermal coupling effects of the MH-PEM hydrogen power system through mathematical modeling and real-world traffic testing.First,a multi-physical field coupling model of the MH-PEM hydrogen power system was proposed based on the structure of the thermal exchange system.Then,numerical simulations and experiments were conducted based on the operating conditions of a range-extended fuel cell hybrid electric vehicle.The results indicated that the proposed mathematical model can accurately characterize the dynamic features of the onboard hydrogen energy system.The comparison of simulation and experimental results showed great agreement,particularly in terms of power response and temperature dynamics.Further analysis of the influence of atmospheric temperature on the hydrogen supply flow was carried out by examining the temperature variation in the MH tank.The results show that the thermal coupling design is an effective method for improving energy efficiency.The results of this study may be used for optimal sizing,temperature control,and energy management strategy design of MH-PEM hydrogen power systems.

关 键 词：车载氢能源系统 金属氢化物氢存储 质子交换膜燃料电池 换热系统 模型测试 

分 类 号：U469.72[机械工程—车辆工程]