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|1. (WO2018058867) ELECTRIC DRIVE ASSEMBLY OF VEHICLE|
|Applicants:||JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
|Title:||ELECTRIC DRIVE ASSEMBLY OF VEHICLE|
Disclosed is an electric drive assembly of a vehicle. The electric drive assembly of a vehicle is connected to rear axle half-shafts (6) or front axle half-shafts of a vehicle, and comprises: an electric motor (1), a speed reducer, an electromagnetic dog clutch and a differential (7). The speed reducer is provided with multiple stages of gears, an input shaft (4) and an intermediate shaft (5). The differential (7) is connected between half shafts of an axle. The electromagnetic dog clutch is mounted to the input shaft (4) or the intermediate shaft (5) of the speed reducer or to the half shafts of the axle. When the electromagnetic dog clutch is engaged, a driving force of the electric motor (1) is transmitted to the axle via the speed reducer and the electromagnetic dog clutch so as to supply an auxiliary driving force to the vehicle. When a driving force of an acceleration stage of the entire vehicle is insufficient, the electric drive assembly is made to supply an auxiliary driving force to the entire vehicle by means of engaging with the electromagnetic dog clutch, thereby compensating for the defect of the acceleration performance of a new energy passenger vehicle being insufficient. After the acceleration of the entire vehicle is complete, the driving force of the electric drive assembly can be instantly removed from the entire vehicle by means of disengaging from the electromagnetic dog clutch so as to save energy.