混合动力汽车功率分配管理的内容主要体现在汽车在实际运行工况下,为满足实际运行工况的功率需求,而在发动机、电动机及动力电池之间对功率的输出与储存进行有效的管理,既能满足需求功率,又达到节约能量的效果.因此,对混合动力汽车建立合理的功率分配数学模型、采用合理的功率分配管理算法成为主要的技术难点.针对上述问题,对混联型混合动力汽车(SPHEV)建立了功率分配模型,并基于惩罚函数原理,对动力电池提出了一种新型的电池能量控制惩罚函数的数学模型.根据整车动力性要求和实际工况的需求功率,利用离散动态规划算法对混联型混合动力汽车实际运行时的功率分配进行了优化控制.从而达到节省燃油消耗同时提高燃油经济性的目的.最后通过Advisor仿真软件进行实验.实验结果表明,混联型混合动力汽车百公里油耗有着显著的下降,且在HC、CO、NOx的排放量上也有所下降.验证了上述功率分配管理数学模型及控制算法,使混联型混合动力汽车优化后性能得到了提高.%A power distribution model is established for hybrid hybrid vehicle (SPHEV),and a new mathematical model of battery energy control penalty function is proposed based on the principle of penalty function.According to the power requirement of the vehicle and the demand power of the actual working condition,the discrete dynamic programming algorithm is used to optimize the power distribution of the hybrid vehicle in actual operation,and the fuel consumption can be reduced.The simulation is carried out by Advisor simulation software.The simulation results show that the fuel consumption of hybrid vehicle has a significant decrease in fuel consumption of 100 km,and the emission of HC,CO and NOx is also decreased.The mathematical model and the control algorithm of the power distribution management improve the performance of the hybrid vehicle.
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