The invention relates to an electric drive unit for a motor vehicle, comprising an electric drive, a multi-stage transmission (6) which is connected downstream of the electric drive and which is arranged individually or together with the electric drive in a drive housing (4), the drive housing is assembled from a housing outer shell (11), which annularly surrounds the transmission (6) with the inner side (11a) thereof, and an end wall (12), which is formed in one piece with the housing outer shell (11). The end wall is centrally provided with a transmission opening (17) for a transmission output shaft (18) of the transmission (6), and a cooling liquid is guided through the drive housing in order to cool components of the transmission. In order to improve the cooling efficiency by taking full advantage of the design of the electric drive unit, an annular chamber (33) is provided on the outside of the end wall (12), which annular chamber is arranged around the transmission opening (17), and a coolant channel (35) is formed in the drive housing (4), the coolant channel leads from an inner side (11a) of the housing shell (11) into the annular chamber (33).
本发明涉及一种用于机动车的电驱动单元,所述电驱动单元具有电驱动装置、连接在所述电驱动装置下游的多级的传动装置(6),所述传动装置单独地或与电驱动装置共同地设置在驱动壳体(4)中,所述驱动壳体由壳体外壳(11)以及与所述壳体外壳(11)一件式构造的端壁(12)组装而成,所述壳体外壳以其内侧(11a)环形包围所述传动装置(6)。所述端壁在中心设有用于所述传动装置(6)的传动装置输出轴(18)的传动装置开口(17),为了对所述传动装置的构件进行冷却,将冷却液引导通过所述驱动壳体。为了在充分利用所述电驱动单元的由结构型式决定的特别之处的情况下改进冷却效率,在所述端壁(12)外部上设置有围绕所述传动装置开口(17)设置的环形腔(33),在所述驱动壳体(4)中构造有冷却剂通道(35),所述冷却剂通道从所述壳体外壳(11)的内侧(11a)出发引导到所述环形腔(33)中。
Electric drive unit for motor vehicle
用于机动车的电驱动单元
2022-03-11
Patent
Electronic Resource
Chinese