基于逻辑阈值的轻度混合动力商用车能量管理策略研究

Research on the Energy Management Strategy of Mild Hybrid Commercial Vehicles based on Logic Thresholds

以某款轻度混合动力商用车为研究对象,建立了基于规则的能量管理策略以提高研究对象的燃油经济性。首先,针对内燃机/轻型电机的车辆构型,搭建了基于Matlab/Simulink的车辆驱动系统模型;其次,设计了基于逻辑阈值的轻混能量管理策略,在US06工况下仿真结果表明,基于逻辑阈值的整车控制策略能让动力电池SOC始终维持在平衡状态,延长了其使用寿命,且一定程度上提高了整车的燃油经济性。

A rule-based energy management strategy was developed to improve the fuel economy of a mild hybrid commercial vehicle as a research object.Firstly,a Matlab/Simulink-based vehicle drive system model is built for the vehicle configuration of internal combustion engine/light electric motor;secondly,a logic threshold-based light hybrid energy management strategy is designed,and the simulation results under US06 operating conditions show that the logic threshold-based control strategy for the whole vehicle can keep the power battery SOC in equilibrium at all times,prolong its service life,and to a certain The simulation results under US06 conditions show that the logic threshold-based control strategy can keep the power battery SOC in equilibrium,prolong its service life and improve the fuel economy to a certain extent.