Rear electric drive assembly of hybrid vehicle

Abstract

The invention relates to a rear electric drive assembly of a hybrid vehicle. The rear electric drive assembly of the hybrid vehicle comprises a drive motor and a reducer assembly. The reducer assemblycomprises a differential assembly mounted in a reducer case, a differential left housing and a differential right housing are provided with extended sleeve sections through allowing semi-shafts to pass, the extended sleeve sections are supported on the reducer case by bearings, a main reduction gear is fixedly connected to the differential housing, the main reduction gear receives torque output by the drive motor, a rotatable planet carrier is arranged in the differential housing in a loose fit mode, one axial end face of the planet carrier is provided with an end face tooth, an axially movable gear ring is arranged in the differential housing, an end face tooth of a gear ring is arranged on one axial end face and corresponds to the end face tooth of the planet carrier, the other axial end of the gear ring is provided with a plurality of axial mounting posts, the axial mounting posts protrude from the differential to support a signal plate, a return spring is arranged between the signal plate and the differential housing, and driving devices for driving the signal plate to perform axial displacements are arranged on the reducer.

Description

technical field [0001] The invention relates to an automobile drive axle, in particular to a rear electric drive assembly of a hybrid electric automobile. Background technique [0002] With the increasing shortage of oil supply and the increasing environmental pollution, people are paying more and more attention to new energy vehicles. Among them, the hybrid electric vehicle has the advantages of obvious fuel saving, no mileage limit, pure electric driving, good power performance, etc., and the technology is becoming more and more mature, and has become the mainstream in the market. However, due to the limited space in the front cabin of the hybrid electric vehicle, the motor Placing it in the front compartment will lead to major changes in the vehicle, increased costs, and a long development cycle; and if the motor is placed in the front compartment of the engine, the output power of the motor must pass through the transmission mechanism to reach the rear wheels, which will...

AI Technical Summary

Problems solved by technology

Among them, the hybrid vehicle has the advantages of obvious fuel saving, no mileage limit, pure electric driving, good power performance, etc., and the technology is becoming more and more mature, and has become the mainstream in the market. However, due to the limited space in the front cabin of the hybrid vehicle, the motor Placing it in the front compartment will lead to large changes in the vehicle, increased costs, and a long development cycle; and if the motor is placed in the front compartment of the engine, the output power of the motor must pass through the transmission mechanism to reach the rear wheels, and the power loss will be serious if it passes through the transmission mechanism.

For conventional hybrid electric vehicles, when only the internal combustion engine is required to drive, the transmission structure of the vehicle will back-drag the motor that does not participate in the power output, resulting in energy losses such as oil stirring and friction in the electric drive assembly, thus wasting a part of the output of the internal combustion engine power, causing motor speed overspeed and vehicle speed limitation

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