Integrated type planet gear reduction differential motor used for new-energy automobile

Abstract

The invention provides an integrated type planet gear reduction differential motor used for a new-energy automobile. The output end of a drive motor is connected with a differential mechanism througha speed reducer. The drive motor, the speed reducer, the differential mechanism and an automobile outer shell are integrated into an integrated structure through a drive motor outer shell, a speed reducer outer shell and a differential mechanism outer shell and serve as a part of a new-energy automobile axle housing, the structure is compact, the occupied space is small, and the overall weight isgreatly reduced. A differential mechanism inner shell is fixedly connected to the output end of the speed reducer, the differential mechanism is connected with a left axle shaft of the automobile through a left axle shaft gear and connected with a right axle shaft of the automobile through a right axle shaft gear, the rotation speed output by the drive motor is reduced through the hollow shaft type planet gear speed reducer and converted into torque of different numerical values through the differential mechanism, the torque is transmitted to the left axle shaft and the right axle shaft of theautomobile, differential drive of the left axle shaft and the right axle shaft of the automobile is achieved, the left axle shaft and the right axle shaft of the motor output torque at the same time,the differential speed can be obtained automatically, and the requirement for different rotation speeds of wheels on the two sides of the new-energy automobile is met.

Description

technical field [0001] The invention relates to an integrated planetary gear reduction differential motor for new energy vehicles. Background technique [0002] Due to the increasingly serious problems of energy consumption and pollution, national policies strongly support and guide the development of new energy vehicles. With the enhancement of people's awareness of environmental protection and the advancement of new energy vehicle manufacturing technology Getting better and better. New energy vehicles have become the key direction of future growth in the industry, with broad market prospects and opportunities; while the power structure in traditional vehicle transmission systems is generally a drive motor, which matches the speed between the prime mover and the working machine or actuator through a reducer , Transmission torque to reduce speed and increase torque, planetary gear reducer is widely used in servo motors, stepping motors, DC motors, etc. due to its small size...

AI Technical Summary

Problems solved by technology

New energy vehicles have become the key direction of future growth in the industry, with broad market prospects and opportunities; while the power structure in traditional vehicle transmission systems is generally a drive motor, which matches the speed between the prime mover and the working machine or actuator through a reducer , Transmission torque to reduce speed and increase torque, planetary gear reducer is widely used in servo motors, stepping motors, DC motors, etc. due to its small size, high transmission efficiency, wide deceleration range, high precision and many other advantages In the transmission system; the traditional planetary gear motor can only output torque from one end to one direction, and cannot output torque in both forward and backward directions at the same time; especially the motor in new energy vehicles cannot transmit different values ​​​​to the transmission mechanisms on both sides at the same time. Torque, while new energy vehicles have a compact structure, and a differential is installed to adjust the speed difference between the left and right wheels. The motor, reducer, and differential each have a rotating shaft, and each rotating shaft is not the same shaft as the vehicle wheel shaft. The connection structure is complicated. The number of parts is large, the volume is large and heavy, it takes up a lot of space, and the installation operation is cumbersome

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