A coaxial electric drive axle arrangement structure of a commercial vehicle comprises an electric drive system, a rear axle assembly, a frame and a universal coupling. The electric drive system comprises an electric drive system shell assembly, a motor and a planetary gear speed reducer; the electric drive system shell assembly is arranged behind the rear axle assembly and fixed to the frame in athree-point suspension mode, the motor and the planetary gear speed reducer are coaxially connected and installed in the electric drive system shell assembly, and a planet carrier of the planetary gear speed reducer and a rear axle main reduction input gear of the rear axle assembly are connected with the two ends of the universal coupling respectively. The electric drive axle arrangement structure is arranged behind the rear axle, the electric drive system adopts a coaxial arrangement structure, the structure is more compact, and the battery arrangement space is increased; the electric drivesystem and the rear axle differential are decoupled through the universal coupling, the weight of the electric drive system is the sprung mass, the unsprung mass is kept unchanged compared with a traditional commercial vehicle, and the problems of poor maneuverability and poor NVH caused by a rear overall axle type arrangement structure are effectively solved.
一种商用车同轴电驱动桥布置结构,包括电驱动系统、后桥总成、车架、万向联轴器;电驱动系统包括电驱动系统壳体总成、电机、行星齿轮减速器,电驱动系统壳体总成设置于后桥总成的后方且采用三点悬置固定于车架上,电机和行星齿轮减速器同轴连接且安装于电驱动系统壳体总成中,行星齿轮减速器的行星架和后桥总成的后桥主减速输入齿轮分别与万向联轴器的两端连接。本电驱动桥布置结构布置于后桥后方,电驱动系统采用同轴式布置结构,结构更紧凑,增加了电池布置空间;采用万向联轴器解耦电驱动系统和后桥差速器,电驱动系统的重量均为簧上质量,簧下质量较传统商用车保持不变,有效解决了后置整体桥式布置结构带来的操纵性差和NVH差的问题。
Coaxial electric drive axle arrangement structure of commercial vehicle
一种商用车同轴电驱动桥布置结构
2020-11-13
Patent
Electronic Resource
Chinese
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