The invention relates to a series variable-speed hybrid power system with a middle-mounted power generation motor, which comprises a casing, a driving motor, the power generation motor, a differential mechanism and a speed change mechanism are arranged in the casing, and the power generation motor is connected with an engine in series. The speed change mechanism comprises a sun gear, an output gear synchronously rotating with the sun gear, a planet gear meshed with the sun gear and an inner gear ring meshed with the planet gear; a wheel shaft of the sun wheel is connected with the output end of the driving motor through a clutch, the output end of the driving motor and a wheel carrier of the planet wheel synchronously rotate at the same time, and a brake is connected between the inner gear ring and the machine shell. The driving system has the following beneficial effects that only one driving motor is arranged, two power transmission paths are achieved at the same time, and starting, the dynamic property under the medium-low vehicle speed and the fuel economy under the medium-high vehicle speed can be considered at the same time; two power transmission paths are integrated, so that the whole mechanism of the speed change system and the hybrid power system is compact and convenient to arrange, and the manufacturing cost can be reduced. Meanwhile, due to the two-gear design, the rotating speed of the motor at medium and high vehicle speeds can be greatly reduced, and the NVH problem caused by the high rotating speed of the motor is solved.
本发明涉及一种发电电机中置式串联变速混动系统,包括机壳,所述机壳内设有驱动电机、发电电机、差速器及变速机构,发电电机与发动机串联,所述变速机构包括太阳轮、与太阳轮同步转动的输出齿轮、与太阳轮啮合的行星轮、与行星轮啮合的内齿圈;太阳轮的轮轴与驱动电机的输出端之间通过离合器连接,驱动电机的输出端同时与行星轮的轮架同步转动,所述内齿圈与机壳之间连接有制动器。本发明的有益效果如下:仅设置一个驱动电机,同时实现了两种动力传递路径,即可以同时兼顾起步及中低车速下的动力性和中高车速下的燃油经济性;将两种动力传递路径进行集成,可使得变速系统混动系统整体机构较为紧凑,便于布置,且可降低制造成本。同时因为2挡设计,可大幅度降低中高车速下电机的转速,从而改善电机高转速带来的NVH问题。
Series variable-speed hybrid power system with middle-mounted power generation motor
发电电机中置式串联变速混动系统
2023-03-14
Patent
Electronic Resource
Chinese
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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