A longitudinal dual-motor power shift transmission

Abstract

The invention discloses a vertical double-motor power shift transmission. The transmission uses two motors as power input, and ensures that the power is not interrupted during the shift process by rationally arranging the fixed shaft gear and the gear sleeve; During the shifting process, the motor actively adjusts the speed difference so that the motor can work in a more suitable working range, which meets the special working conditions of urban buses that frequently start and stop. The gearshift transmission includes: electric motor A, electric motor B, a gearbox main box module, a reducer module and an output shaft. Its working principle is: the power of motor A and motor B is input to the gearbox main box module through an input shaft respectively. The gearbox main box module couples the power of motor A and motor B through a multi-free fixed-axis gear mechanism, and realizes 5 matching gears respectively. The reducer module realizes the function of further reducing speed and increasing torque.

Description

technical field [0001] The invention relates to a shift transmission, in particular to a dual-motor power shift transmission, which belongs to the field of power transmission. Background technique [0002] In the face of increasingly serious environmental pollution and energy crisis, energy conservation and environmental protection have become an important direction of automobile development. As an important part of urban automobiles, urban public transport vehicles have become the most important part of urban transportation. However, traditional urban public transport vehicles generally use diesel as fuel, causing pollution to urban air. With the rapid increase of the number of cars in our country, the situation of cars running in the city is stop-and-go, and the speed is not high. Pure electric vehicles are more suitable for this kind of working conditions. The pure electric city bus is a vehicle powered by electricity, which is engaged in transportation and other work, a...

AI Technical Summary

Problems solved by technology

In order to increase the transmission ratio range of the pure electric urban bus drive motor, improve the power utilization rate of the motor or the high-efficiency operating range, the main drive motor is often matched with a multi-speed AMT gearbox, but there is power interruption during the shifting process, and the shifting comfort is not enough. Good and other questions

[0003] Patent CN202319954U discloses a dual-motor power coupling driving device. In the process of using dual-motor shifting in the driving device, it is impossible to ensure that the shifting power is not interrupted; patent CN102959210A discloses a dual-clutch transmission. In order to ensure that the power is not interrupted during the shifting process, but it is driven by a single motor, making it less efficient at low loads

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