The invention belongs to the technical field of mechanical-electrical-hydraulic hybrid power and hydraulic driving, and particularly relates to a multi-mode high-power hydraulic driving system based on hybrid power and a control method. The hydraulic driving system comprises a main power system, an auxiliary power system and a central control unit. The main power system comprises an engine, a motor, a hydraulic pump, a main hydraulic oil way, a clutch, a brake locking mechanism, a fixed-speed-ratio transmission case, a motor controller, a high-voltage direct-current bus, a power battery, a brake resistor and the like and is used for achieving the high-power hydraulic load driving function. The auxiliary power system comprises a low-power motor, a motor controller, a fixed-speed-ratio transmission case, a brake locking mechanism, a hydraulic pump, an auxiliary hydraulic oil way, a one-way valve and the like and is used for accurately controlling the stroke at the tail end of the hydraulic stroke. The control method provided by the invention is integrated in the central control unit and is used for realizing coordination control on the working mode and the working process of the hydraulic driving system.
本发明属于机电液混合动力和液压驱动技术领域,具体涉及一种基于混合动力的多模式大功率液压驱动系统及控制方法,所述液压驱动系统包括主动力系统、副动力系统、中央控制单元。主动力系统包括发动机、电机、液压泵、主液压油路、离合器、制动锁止机构、固定速比传动箱、电机控制器、高压直流母线、动力电池和制动电阻等,用于实现大功率的液压负载驱动功能。副动力系统包括小功率电动机、电机控制器、固定速比传动箱、制动锁止机构、液压泵、副液压油路和单向阀等,用于在液压行程的末端对行程进行精确控制。中央控制单元中集成了本发明提出的控制方法,用以实现对液压驱动系统的工作模式和工作过程的协调控制。
Multi-mode high-power hydraulic driving system based on hybrid power and control method
基于混合动力的多模式大功率液压驱动系统及控制方法
2020-10-02
Patent
Electronic Resource
Chinese
IPC: | 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 / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
Multi-mode hybrid power driving system and control method
European Patent Office | 2023
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