Multistage hybrid powertrain for a motor vehicle

Abstract

The invention relates to a multi-stage hybrid drive train for a motor vehicle, having an input stage and further comprising: - a stage input shaft that can be coupled to an internal combustion engine, - a stage output shaft that can be coupled to a subsequent stage, - an electric motor , with a fundamentally fixed stator and a rotor rotatably arranged radially inside the stator, and a planetary gear set with a sun gear, a ring gear and a planet carrier on which a plurality of planet gears are rotatably mounted, the meshes with the sun gear on the one hand and with the ring gear on the other hand, the sun gear is coupled to the rotor, the ring gear is coupled to the stage input shaft and the planet carrier is coupled to the stage output shaft, the invention is characterized in that a first clutch coupling the rotor to the sun gear is arranged axially adjacent to the planetary gear set, a second clutch coupling the rotor to the stage output shaft is arranged axially adjacent to the first A clutch is disposed axially adjacent, and the planetary gear set and clutch are disposed both radially and axially within the rotor.

Description

technical field [0001] 本发明涉及一种用于机动车的多级的混合动力传动系,具有输入级,还包括: [0002] -可与内燃机耦连的级输入轴, [0003] -与后面的级耦连的级输出轴, [0004] -电机,具有基础固定的定子和径向在定子内部可转动地安置的转子,和 [0005] -行星齿轮组,具有太阳轮、齿圈和行星架,在行星架上可转动地支承有多个行星齿轮,这些行星齿轮一方面与太阳轮啮合并且另一方面与齿圈啮合, [0006] 其中,所述太阳轮与所述转子耦连、所述齿圈与所述级输入轴耦连并且所述行星架与所述级输出轴耦连。 Background technique [0007] 这种混合动力传动系由EP 1 640 202 A1已知。 [0008] 在用于机动车的现代的混合动力传动系的设计中,人们致力于提供足够多的挡位和传动模式,以便可以以尽可能高能效的和使用户舒适的方式满足所有想得到的行驶情况。因此通常,这种传动系设计有多个级,其中,不同的级具有不同的功能作用。但是,所有方案都要根据尽可能小的结构空间需求的希望而设计,这由于通常较多数量的换挡件、如制动器和离合器、传动元件、如行星齿轮组和驱动设备、如电机常常是很难实现的。 [0009] 上述文献公开了一种混合动力传动系,该混合动力传动系的输入级包括行星齿轮组和电机。在输入侧,输入级借助其级输入轴可以与内燃机、尤其通过曲轴相连。在输出侧,输入级通过其级输出轴与后面的传动级相连,后面的传动级的具体的结构在本发明中不涉及。在已知的输入级中,行星齿轮组和电机轴向地彼此相邻地布置,其中,在输入级中行星齿轮组在输入侧并且电机在输出侧布置。这种布置方式的缺点是,在利用了合理的、轴向的结构空间的情况下仅仅可以使用相对较低功率的电机。具有更多数量绕组的较强功率的电机相应地要求更大的结构空间。当考虑到控制元件、尤其离合器集成在输入级中,用于实现不同的运行模式时,则上述问题变得更加严重。 Contents of the invention [0010] 本发明所要解决的技术问题是,针对输入级如此改进前述类型的混合动力传动系,从而可以增大可使用的运行模式的数量并且可以增大电功率,而不会导致过度的、轴向的结构空间的增长。 [0011] 所述技术问题按照...

AI Technical Summary

Problems solved by technology

The above-mentioned problems become even more serious when it is considered that control elements, especially clutches, are integrated in the input stage for different operating modes

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