汽车工程

汽车工程 ›› 2020, Vol. 42 ›› Issue (12): 1621-1629.doi: 10.19562/j.chinasae.qcgc.2020.12.003

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蓄电池公交车电液并联混合动力系统设计与能量管理*

刘桓龙, 陈冠鹏, 王家为   

  1. 1.西南交通大学,先进驱动节能技术教育部工程研究中心,成都 610031;
    2.西南交通大学机械工程学院,成都 610031
  • 收稿日期:2020-02-19 修回日期:2020-04-30 出版日期:2020-12-25 发布日期:2021-01-13
  • 通讯作者: 刘桓龙,副教授,E-mail:lhl_swjtu@163.com
  • 基金资助:
    *四川省科技厅重点研发项目(2018GZ0450)资助。

Design and Energy Management of Electro-hydraulic Parallel Hybrid Power System for Battery Bus

Liu Huanlong, Chen Guanpeng, Wang Jiawei   

  1. 1. Southwest Jiaotong University, Engineering Research Center of Advanced Drive Energy Saving Technology, Ministry of Education, Chengdu 610031;
    2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031
  • Received:2020-02-19 Revised:2020-04-30 Online:2020-12-25 Published:2021-01-13

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摘要： 针对城市蓄电池公交车起步或加速时电机转矩冲击大、电池寿命短等问题,以成都市区运行的某型电动公交为对象,设计了一种新型双轴并联电液混合动力系统,对典型工况下调节电机工作状态提高综合能量利用率进行研究。基于AMESim与MATLAB/Simulink-stateflow软件的联合仿真建立整车及控制模型并设定基于规则的动态优化能量管理策略,分析了中国典型城市公交车循环行驶工况(CCBC)与该类公交车实地调研循环行驶工况下的动力与能量利用特性。对电液混合动力系统能量耦合等核心问题进行试验研究,验证系统设计思路与仿真模型的正确性。结果表明:在满足动力性能需求的前提下,所设计的电液混合动力系统能显著改善电机工作点分布情况,减小峰值转矩冲击,CCBC工况下峰值转矩减小33.8%,续驶里程提高30.6%;实际调研工况下峰值转矩减小33.0%,续驶里程提高20.0%。

关键词: 蓄电池公交车, 电液混合动力, 电机工作效率, 转矩特性, 能量利用率

Abstract: In order to solve the problems of large motor torque shock and short battery life when the city battery bus starts or accelerates, this paper designs a new dual-shaft parallel electro-hydraulic hybrid system for a certain type of electric bus running in Chengdu to study the improvement of the comprehensive energy utilization rate by adjusting the working state of the motor under typical working conditions. Based on the co-simulation of AMESim and MATLAB/Simulink-stateflow software, the vehicle and control model are established and the rule-based dynamic optimization energy management strategy is set up. The dynamic performance and energy utilization characteristics of Chinese City Bus Cycle(CCBC) and field investigation driving conditions of this kind of bus are analyzed. The core problems of energy coupling of electro-hydraulic hybrid system are studied experimentally, which verifies the correctness of the design thought and the simulation model. The results show that under the premise of satisfying the demand of dynamic performance, the designed electro-hydraulic hybrid system can effectively improve the distribution of the motor’s operating point and greatly reduce the peak torque shock. Under CCBC conditions, the peak torque is reduced by 33.8%, and the driving range is increased by 30.6%; while under field investigation conditions, the peak torque is reduced by 33.0%, and the driving range is increased by 20.0%

Key words: battery bus, electro-hydraulic hybrid, motor working efficiency, torque characteristic, energy efficiency