Double-motor single-speed hub speed reduction parallel-axis electric drive axle

Abstract

The invention discloses a double-motor single-speed hub speed reduction parallel-axis electric drive axle. The invention belongs to the technical field of new energy vehicles. The problems that an existing single motor is high in energy loss, low in transmission efficiency and poor in power performance are mainly solved. The electric drive axle is mainly characterized by comprising a first motor,a second motor, a first output half shaft, a second output half shaft, a first hub speed reducer assembly, a second hub speed reducer assembly, a first speed reducer assembly and a second speed reducer assembly; the first motor and the second motor are mounted on the first speed reducer assembly and the second speed reducer assembly respectively. The first speed reducer assembly and the second speed reducer assembly comprise meshed input gears and reduction gears; the two ends of the first output half shaft are connected with the first hub speed reducer assembly and the first reduction gear respectively, and the two ends of the second output half shaft are connected with the second hub speed reducer assembly and the second reduction gear respectively; and the first output half shaft and the second output half shaft are parallel to the first motor shaft and the second motor shaft. The electric drive axle has the advantages of being simple in structure and capable of improving passing ability and dynamic property, and is mainly used for single-speed hub speed reduction parallel-axis electric drive axle.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles. In particular, it relates to a double-motor single-speed pulley-side deceleration parallel-axis electric drive axle. Background technique [0002] As more and more attention is paid to automobile exhaust pollution and energy consumption around the world, new energy vehicles have become the key research and development models of automobile manufacturers in various countries. The power system of the whole vehicle has also changed from the original engine + gearbox + traditional axle to the current motor + transmission axle to provide power. At present, the more mature and widely used electric drive technology in the domestic and foreign markets is based on the transmission system composed of a single motor and a differential reducer. The centralized drive form of a single motor mainly relies on the rigid power transmission of gears and couplings. The loss in the process is almost the ...

AI Technical Summary

Problems solved by technology

At present, the more mature and widely used electric drive technology in the domestic and foreign markets is based on the transmission system composed of a single motor and a differential reducer. The centralized drive form of a single motor mainly relies on the rigid power transmission of gears and couplings. The loss in the process is almost the same as that of ordinary fuel vehicles, with high energy loss, low transmission efficiency and weak power

In addition, in the electric drive axle with single-speed parallel shaft and wheel-side deceleration, automobile manufacturers use a drive motor. In order to meet the power requirements, the volume and quality of the motor are relatively large, which not only occupies a large space for the layout of the chassis structure , and also affects the number of battery layouts; it also makes the maximum speed of the motor generally low, the high-efficiency working area of ​​the motor is narrow, and the energy utilization rate is low, resulting in a short driving range of the vehicle, and it is difficult to balance the power and economy of the vehicle

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