Double powered variable transmission for electric automobile

Abstract

The invention provides a double powered variable transmission for an electric automobile. In the stepless transmission, an output shaft of a main power motor extends into a connector and is connected with a left end shaft of a sun gear; the sun gear is engaged with a planet gear on the periphery thereof; an axis of the planet gear passes through a left inner bore and a right inner bore of a planet carrier; the planet gear is engaged with an internal tooth of a gear ring at the same time; the gear ring is engaged with a worm through a worm wheel ring; the worm is coaxially connected with an output shaft of a regulating motor; the right end of the planet carrier is fixed with the left end of a variable speed output shaft; and the right end of the variable speed output shaft extends out of an end cover. The variable transmission has stepless variable transmission ratio, leads the rotating speed of the main power motor to be within 4,000 revolutions / minute, realizes that the electric automobile not only meets the requirement of low speed large torque, but also accords with the requirement of high speed mobility, has the characteristics of simple structure, easy assembly, light weight, low manufacturing cost, stable transmission, reliable performance, easy implementation, wide application range and the like, and can meet the requirement on economy and whole automobile cost of the electric automobile.

Description

technical field [0001] The invention belongs to the field of electric vehicle parts manufacturing, and in particular relates to a dual-power continuously variable transmission on the electric vehicle. Background technique [0002] Due to the pollution of fuel vehicles to the environment and the continuous rise of international oil prices, various automobile manufacturers have increased the pace of research on electric vehicles. There are generally two forms of power transmission to the wheels of electric vehicles: one is that the electric motor directly drives the differential to drive the vehicle, and the other is to drive the wheels through a motor-reducer connected to the differential. The power performance of the motor direct drive method is not good, and it is not suitable for the high-torque climbing and muddy road driving of the whole vehicle; while the motor + reducer solution, although obtaining high torque, hinders the high-speed operation of the car. Another solu...

AI Technical Summary

Problems solved by technology

The power performance of the motor direct drive method is not good, and it is not suitable for the high-torque climbing and muddy road driving of the whole vehicle; while the motor + reducer solution, although it obtains high torque, it hinders the high-speed operation of the car

Another solution is to add a gear changer. When the whole vehicle is running at high speed, it adopts a small transmission ratio i=4, and when running at low speed, the transmission ratio is changed to i=8-10. Clutches, synchronizers, gearboxes, gearbox controllers, etc. are difficult to assemble, heavy in weight, and high in cost, making it difficult to meet the economic and cost requirements of electric vehicles

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