The invention discloses a parallel type electro-hydraulic hybrid power system. A storage battery pack is electrically connected with a motor through a motor controller, an output shaft of the motor is coaxially connected with a first input shaft of a power confluence mechanism, and an output shaft of the power confluence mechanism is coaxially connected with an input shaft of a main speed reducer; an oil inlet and outlet of the hydraulic energy accumulator is communicated with a high-pressure oil inlet and outlet of the hydraulic pump motor, a low-pressure oil inlet and outlet of the hydraulic pump motor is communicated with the hydraulic oil tank, and an output shaft of the hydraulic pump motor is coaxially connected with a second input shaft of the power confluence mechanism. An electric driving system with high energy density and a hydraulic driving system with high power density are combined together to form an electro-hydraulic hybrid power system, the electric driving system provides average power, the hydraulic driving system provides peak power, the installed power of the motor is reduced, the negative influence of large-current charging and discharging on a storage battery is avoided, and the power performance of the engineering machinery is improved.
本发明公开了一种并联式电液混合动力系统。本发明的蓄电池组通过电机控制器与电机电连接,电机的输出轴与功率汇流机构的第一输入轴同轴连接,功率汇流机构的输出轴与主减速器的输入轴同轴连接;液压蓄能器的进出油口与液压泵马达的高压进出油口连通,液压泵马达的低压进出油口与液压油箱连通,液压泵马达的输出轴与功率汇流机构的第二输入轴同轴连接。本发明将能量密度高的电驱动系统和功率密度高的液压驱动系统结合到一起,构成电液混合动力系统,由电驱动系统提供平均功率,液压驱动系统提供峰值功率,降低了电机的装机功率、避免了大电流充放对蓄电池的负面影响,提高了工程机械的动力性能。
Parallel type electro-hydraulic hybrid power system
一种并联式电液混合动力系统
2021-11-16
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 |
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