基于NEDC的氢-锂电池混合动力系统性能仿真

魏宁¹，黄凤云¹，杜树村¹，陈浩¹，王连修²，李新海^1*

1.山东建筑大学机电工程学院,山东济南250101；2.山东省标准化研究院，山东济南250014

摘要：设计氢燃料电池-锂电池混合动力系统，利用AVL-CRUISE软件构建整车动力系统模型，基于新欧洲行驶测试循环（new European driving cycle，NEDC）对氢燃料电池各主要部件功耗、氢燃料电池性能、锂电池性能、氢燃料电池进气流量进行仿真验证系统的经济性和合理性。结果表明：NEDC全工况下，各部件中空压机的功耗最大，且与车速正相关；全工况耗氢量为0.089 kg，总行驶里程为10.926 km，耗氢量较低，经济性较好；氢燃料电池堆内工作温度为66~77 ℃，符合60~80 ℃的温度要求；锂电池在城市工况输出功率占比大于郊区工况输出功率占比；氢气过量系数为1.1～1.5，满足动力系统不同功率输出要求；实际空气流量与设定目标接近，控制效果较好。

关键词：混合动力系统；氢燃料电池；锂电池；空压机

Performance simulation of a hydrogen-lithium battery hybrid power system based on NEDC

WEI Ning¹, HUANG Fengyun¹, DU Shucun¹, CHEN Hao¹,

WANG Lianxiu²，LI Xinhai^1,*

1. School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China;

2. Shandong Institute of Standardization, Jinan 250014, China

Abstract：This study is focused on the design of a hybrid power system integrating hydrogen fuel cells and lithium batteries, with a primary objective of verifying its economic viability and practicality through simulation. The complete vehicle power system model is developed using AVL-CRUISE software. Simulation and analysis are conducted based on the new European driving cycle (NEDC) to assess the power consumption of major components within the hydrogen fuel cell system, hydrogen fuel cell performance, lithium battery performance, and hydrogen fuel cell intake airflow. The results indicate that the power consumption of the compressor in the accessory subsystem reaches its maximum during the NEDC cycle and shows a positive correlation with vehicle speed. The hydrogen consumption is 0.089 kg over the complete cycle, covering a total distance of 10.926 km. The hybrid system has low hydrogen consumption and good economy. The fuel cell temperature is maintained within the range of 66 ℃ to 77 ℃. Furthermore, the lithium battery exhibits a higher power output ratio during urban driving conditions compared to suburban scenarios. The hydrogen excess ratio ranging from 1.1 to 1.5, which meets the different power output requirements of the power system. The actual airflow closely matches the preset target, indicating a precise control.

Keywords:hybrid powertrain system; hydrogen fuel cell; lithium battery; compressor