Electric driving device based on double-planet-row two-gear transmission

Abstract

The invention discloses an electric driving device based on a double-planet-row two-gear transmission. The electric driving device comprises a driving system shell, a driving motor, a first-planet-row sun gear, a first-planet-row planet carrier, an intermediate shaft, a second-planet-row sun gear, a brake, a clutch and a second-planet-row planet carrier, wherein the driving motor has an output shaft for outputting power; the first-planet-row sun gear is connected with the output shaft of the driving motor; the first-planet-row planet carrier is fixedly connected with a first-planet-row planet gear I and a first-planet-row planet gear II, and is fixedly connected with the driving system shell; the intermediate shaft is connected with a first-planet-row inner gear ring, and rotates along with the first-planet-row inner gear ring; the second-planet-row sun gear is connected with the intermediate shaft; the brake is arranged between the driving system shell and a second-planet-row inner gear ring; the clutch is arranged between the intermediate shaft and the second-planet-row planet carrier; and the second-planet-row planet carrier is fixedly connected with the output shaft. The electric driving device has the characteristics of compact design structure, no power interruption in gear shifting process, simple realization of reversing control, high utilization rate of whole vehicle energy, effective energy use and energy saving.

Description

technical field [0001] The invention relates to the drive field, in particular to an electric drive device based on a dual-planetary two-speed transmission. Background technique [0002] Electric vehicles are new, energy-saving and environmentally friendly vehicles, especially in today's environment with severe air pollution, they have great development potential and broad application prospects. An electric vehicle uses an electric motor to replace the engine of a traditional car. The electric motor can be started with load and can meet the requirements of the car through reasonable configuration, which is a big difference from the engine. It is no longer suitable to use multi-speed transmissions on electric vehicles, but if the variable speed transmission device is cancelled, it will be difficult to meet the requirements of vehicle climbing and high-speed driving, especially for small and medium-sized vehicles, it is necessary to redesign the power of electric vehicles acco...

AI Technical Summary

Problems solved by technology

It is no longer suitable to use multi-speed transmissions on electric vehicles, but if the variable speed transmission device is cancelled, it will be difficult to meet the requirements of vehicle climbing and high-speed driving, especially for small and medium-sized vehicles, it is necessary to redesign the power of electric vehicles according to the working characteristics of the electric motor system

Images