Double-motor coupling driving bridge with torque directional distribution function

Abstract

The invention discloses a double-motor coupling driving bridge with a torque directional distribution function. The double-motor coupling driving bridge with the torque directional distribution function comprises a master driving mechanism, a spur gear differential, a TV control driving mechanism, a first single row planetary gear system, a second single row planetary gear system, a third single row planetary gear system, a first clutch, a second clutch, a third clutch and a fourth clutch, wherein a first sun gear of the first single row planetary gear system can be rotatably supported on a first half shaft, and a first gear ring is connected with the output end of the TV control driving mechanism; a second gear ring of the second single row planetary gear system is fixed to a driving bridge shell, and a second sun gear is coaxially and fixedly connected with the first sun gear; a third sun gear of the third single row planetary gear system is fixedly connected with a differential shell, and a third gear ring is fixedly connected with a second planetary frame; the first clutch is used for isolating or combining the first half shaft and a first planetary frame; the second clutch is used for isolating or combining the first planetary frame and the driving bridge shell; the third clutch is used for isolating or combining the first half shaft and a third planetary frame; and the fourth clutch is used for isolating or combining the third planetary frame and the driving bridge shell.

Description

technical field [0001] The invention belongs to the field of electric vehicle transmission, in particular to a dual-motor coupling drive axle with torque orientation distribution function. Background technique [0002] Due to the increasingly serious problems of environmental pollution and energy crisis, more and more countries in the world have paid attention to the development of energy-saving and environment-friendly vehicles. Among them, electric vehicles, as a vehicle with almost zero emissions, have become the new darling of the automotive industry and have developed rapidly in recent years. Due to its inherent advantages, electric vehicles have great potential for development. [0003] At this stage, due to the poor heat dissipation of the motor and excessive unsprung mass of the electric vehicle driven by the hub motor, the technical bottlenecks cannot be solved. The electric vehicle generally adopts a powertrain composed of a single motor and a drive axle or consis...

AI Technical Summary

Problems solved by technology

At present, this technology is mainly used in some high-end traditional internal combustion engine vehicles in the form of torque-oriented distribution differential, such as the super four-wheel drive system (SH-AWD) developed by Honda and the super active yaw developed by Mitsubishi. Control system (SAYC), etc. These torque-oriented distribution differentials greatly improve the drivability and extreme cornering ability of the vehicle, but the torque-oriented distribution technology has no practical application in electric vehicles

[0005] In addition, since electric vehicles generally use a powertrain composed of a single motor and drive axle or a powertrain composed of a single motor, transmission and drive axle to drive the vehicle, in order to meet various complex driving conditions of the car, it is necessary to require electric vehicles The single drive motor has a high backup power, so in most driving conditions, there must be a phenomenon of "big horse-drawn car" similar to traditional internal combustion engine vehicles, that is, the drive efficiency is not very high.

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