The invention discloses a series-parallel hybrid power forklift and a hierarchical control method thereof. A power system of the series-parallel hybrid power forklift comprises an engine, a generator, a power battery, a driving motor, an electromagnetic clutch, a whole vehicle controller, a transmission system and a hydraulic system. When the electromagnetic clutch is closed, the engine and the generator form a range extender, and when the electromagnetic clutch is disconnected, the engine or the generator independently drives the hydraulic system to work. And the vehicle control unit calculates to obtain power requirements of walking and operation, realizes working mode switching and power distribution, determines starting and stopping moments of an engine, a generator, a driving motor and a power battery and closing and opening moments of an electromagnetic clutch, and calculates power required to be provided by each component, so that energy distribution is completed, and hierarchical control is realized. According to the invention, the coordination control strategy is designed to improve the cooperation efficiency among the components, the flow-sequential switching of diversified working states is realized, the efficiency and the operation stability of the whole vehicle are improved, and the zero-emission operation requirement of an indoor working environment is met.
本发明公开了一种混联式混合动力叉车及其分层控制方法,其动力系统包括发动机、发电机、动力电池、驱动电机、电磁离合器、整车控制器、传动系统和液压系统;当电磁离合器闭合时,发动机与发电机组成增程器,当电磁离合器断开时,发动机或发电机单独带动液压系统工作;整车控制器计算得到行走和作业的功率需求,实现工作模式切换和功率分配,确定发动机、发电机、驱动电机、动力电池的启停时刻、电磁离合器吸合和断开时刻,计算各部件需要提供多大的功率,从而完成能量分配,实现分层控制。本发明通过设计协调控制策略提升各部件之间的配合效率,实现多样化工作状态的流顺切换,整车效率和运行稳定性提升,满足室内作业环境的零排放运行要求。
Series-parallel hybrid power forklift and hierarchical control method thereof
一种混联式混合动力叉车及其分层控制方法
25.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last |
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