Electric vehicle, double-motor coupling speed change gear thereof and control system of double-motor coupling speed change gear

Abstract

The invention provides an electric vehicle, a double-motor coupling speed change gear thereof and a control system of the double-motor coupling speed change gear. The double-motor coupling speed change gear comprises a fixed-axis gear mechanism, a planet gear mechanism, a linkage control device and a torque coupling control device, the fixed-axis gear mechanism is connected with a first motor and provided with a power output gear, the planet gear mechanism is connected with a second motor and consists of a sun gear, an inner gear ring, a plurality of planet gears and a planet carrier, the sun gear is connected with the second motor, power is outputted by the planet carrier, the linkage control device is provided with a first position and a second position, the power output gear and the inner gear ring are in coupled transmission when the linkage control device is arranged at the first position, the inner gear ring is locked when the linkage control device is arranged at the second position, the torque coupling control device is provided with a first position and a second position, the power output gear and a center shaft of the sun gear are in coupled transmission when the torque coupling control device is disposed at the first position, and the power output gear is not in transmission with the center shaft of the sun gear when the torque coupling control device is disposed at the second position. The invention further provides the control system of the double-motor coupling speed change gear and the electric vehicle provided with the double-motor coupling speed change gear. The device is simple in structure and convenient in control.

Description

technical field [0001] The invention relates to the field of driving electric vehicles, in particular to an electric vehicle, a dual-motor coupling transmission device thereof and a control system of the device. Background technique [0002] At present, the electric drive device of electric buses generally adopts a motor and a gearbox. The gearbox can adjust the output torque and speed of the motor through different gears to meet the requirements of vehicle climbing and high-speed driving. At present, manual transmissions are the main transmissions for traditional passenger cars in China. With the continuous improvement of driving comfort requirements, automatic transmission has become an inevitable trend, and manual transmissions are gradually being replaced by AMT and AT. For the electric drive device of electric bus, the combination of motor and AMT has begun to be used in small-scale demonstration applications, but its reliability and transmission efficiency still need t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an electric vehicle with simple structure and convenient operation, its dual-motor coupling transmission device and the control system of the device, so as to overcome the problems of complex mechanical mechanism of the existing transmission device, power interruption in gear shifting, and troublesome control

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