Driving rear axle of mini electric vehicle

The invention discloses a driving rear axle of a mini electric vehicle. The driving rear axle of the mini electric vehicle adopts a transmission structure with a motor, a single-reduction gearbox and a differential, is simple and compact in structure and high in transmission efficiency as compared with the prior art, and is more suitable for mini electric vehicles. Simultaneously, a motor output gear shaft which is processed by a cold extrusion molding technique has the characteristics of low number of teeth and high strength, and is suitable for the transmission structure with the motor, single-reduction gearbox and differential. The motor and reduction gearbox integrated case is convenient for mounting and disassembly, reduces the required space for arrangement, and solves the problem that the inner space of the mini electric vehicle is insufficient. 种微型电动车驱动后桥,采用电机、级减速器、差速器的传动结构，与现有技术相比，结构简单紧凑，传动效率高，更适用于微型电动车。同时，通过冷挤压成型工艺加工出的电机输出齿轮轴具有齿数低，高强度的特性，适用于电机、级减速器、差速器的传动结构。采用发动机减速器体化壳体，便于安装，拆卸，减少布置所需空间，改善了微型电动车内部空间