Automatic transmission hub motor driving mechanism for electric vehicle

Abstract

The invention discloses an automatic transmission hub motor driving mechanism for an electric vehicle. The automatic transmission hub motor driving mechanism is provided with a hub, an upper end cover, a lower end cover, a motor, an automatic transmission, a planetary gear reducing mechanism, a main shaft and the like. The automatic transmission hub motor driving mechanism is characterized in that the automatic transmission is provided with a sun gear fixing plate, a driving disk, an enclosure, a positioning plate, a planetary gear reducer and the like, wherein magnetic steel is arranged outside the enclosure; a stator is arranged outside the magnetic steel and is fixedly arranged on a motor casing; the positioning plate is connected with the enclosure along a port; the main shaft is fixedly connected with the motor casing through the center of he automatic transmission, extends to the outside through an upper end cover bearing hole and a lower end cover bearing hole and is fixedly connected with a frame; the motor casing is matched with an inner hole of a bearing of the lower end cover; a sun gear is matched with the sun gear fixing plate; holes are formed in two sides of the sun gear fixing plate; and the sun gear fixing plate is fixedly connected with screw holes of the motor casing by using screws; the planetary gear is fixedly connected with the driving disk with a sing block; a tension spring is connected to the sing block; the driving disk is connected with a driving gear through a driving disk spline; the driving gear drives the planetary gear; the planetary gear is connected with the upper end cover through a planetary gear shaft; the planetary gear drives the upper end cover; a gear ring is fixedly connected with the motor casing; and the upper end cover and the lower end cover are connected with the hub to form the automatic transmission hub motor driving mechanism for the electric vehicle.

Description

technical field [0001] The invention relates to an electric wheel hub motor, in particular to an automatic variable speed wheel hub motor transmission mechanism for an electric vehicle. Background technique [0002] The rapid development of electric vehicles in our country has entered thousands of households. The green environmental protection of electric vehicles is in line with the spirit of the country's low-carbon emission reduction instructions. With the upcoming standards for electric vehicles and electric motorcycles in the future, the industry has higher technical requirements for the heart power of electric vehicles - the speed, load, and starting current of the motor. The quality of the motor directly affects the quality of electric vehicles. At present, the brushless hub motors used in electric vehicles in my country are relatively common. There are also high-speed hub motors, manual gear shift hub motors, and electronically controlled gear shift hub motors on the...

AI Technical Summary

Problems solved by technology

At present, the brushless hub motors used in electric vehicles in my country are relatively common. There are also high-speed hub motors, manual gear shift hub motors, and electronically controlled gear shift hub motors on the market; ordinary brushless hub motors and high-speed hub motors only provide one transmission Speed, it needs to consider the reasonable balance of the two factors of speed and load during operation, so there are deficiencies in climbing and speed during use, and the starting current is large, which reduces the service life of the battery and causes the use of motor power. Amplification and energy waste, as well as load, speed, and climbing requirements cannot be met; manual shifting hub motors, electronically controlled shifting hub motors, they can realize the conversion of transmission ratios during operation, and meet the operating requirements of load and climbing However, because the system still needs manual support, the production cost of the product is increased, the manufacturing process is complicated, and the electronic gear shift hub motor also needs the support of a special control system, which has the defects of cumbersome use and inconvenient maintenance for users.

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