中国机械工程 ›› 2012, Vol. 23 ›› Issue (4): 493-499.

• 车辆工程 • 上一篇    下一篇

基于等效BSFC和电池SOC平衡的插入式混合动力汽车分段式能量分配策略研究

林潇1;徐晓2;管成2
  

  1. 1.上海捷能汽车技术有限公司,上海,201804
    2.浙江大学,杭州,310027
  • 出版日期:2012-02-25 发布日期:2012-03-02
  • 基金资助:
    国家高技术研究发展计划(863计划)资助项目(2010AA044401)
    National High-tech R&D Program of China (863 Program) (No. 2010AA044401)

Subsection-typed Energy Management for a Plug-in Hybrid Electric Vehicle Based on Equivalent BSFC and Battery SOC Balancing

Lin Xiao1;Xu Xiao2;Guan Cheng2
  

  1. 1.Shanghai E-propulsion Auto Technology Co.,Ltd.,Shanghai,201804
    2.Zhejiang University,Hangzhou,310027
  • Online:2012-02-25 Published:2012-03-02
  • Supported by:
    National High-tech R&D Program of China (863 Program) (No. 2010AA044401)

摘要:

基于所提出的插入式并联混合动力汽车系统结构,对整车动力/传动系统(包括发动机、电机、电池、离合器、变速箱等子系统)进行了动态精确建模,模拟了行车换挡过程中同步器切换、离合器接合/分离等瞬态过程。根据电池SOC值分段采用最大用电策略或效率优先策略,提出了基于等效BSFC和电池SOC平衡的分段式能量分配策略,兼顾了发动机BSFC和电机充/放电效率,实现了系统在当前转速和输入轴需求转矩下的最佳转矩分配。结果表明,所提出的能量分配策略在不牺牲汽车各项性能的前提下,提高了动力系统工作效率和整车燃油经济性。

关键词:

Abstract:

Based on the proposed system architecture of a plug-in parallel hybrid vehicle, a dynamics mathematical model of the whole vehicle's powertrain/transmission system including engine, motor, battery, clutch, transmission box was put forward which was capable of simulating transit synchronizer progress and clutch engage or disengage progress during gear shift or mode change stage. In accordance with the battery SOC, the electricity max algorithm or powertrain efficiency algorithm was adopted. The energy distribution algorithm of powertrain efficiency based on equivalent BSFC and battery SOC balancing was brought forward which took engine's BSFC and motor's motor/generation efficiency into consideration. The optimal torque distribution can be realized under varying sets of vehicle speed and torque requests at the input shaft. Theoretical analysis and simulation results show that, the proposed energy distribution algorithm can increase powertrain system working efficiency and the whole system fuel economy without sacrificing any vehicle performance. 

hybrid electric vehicle; equivalent BSFC(brake specific fuel consumption); subsectional control; torque distribution

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