Motor end cover structure of electric vehicle

Abstract

The invention discloses a motor end cover structure of an electric vehicle. The motor end cover structure comprises an end cover body and a heat dissipation disc, and the center of the end cover bodyis provided with a shaft hole for a motor output shaft to pass through. The heat dissipation disc is in a disc shape, the cross section of the heat dissipation disc is in an L shape, the heat dissipation disc and the motor output shaft are fixedly installed, the heat dissipation disc is rotatably connected with the end cover body, the end face of the side, opposite to the end cover body, of the heat dissipation disc is provided with a plurality of protruding ribs arranged in an annular array mode, and the ribs are in an arc shape. A wire outlet hole is formed in the end face of the end cover body, an installation groove is turned in the inner wall of the wire outlet hole, a sealing air bag is arranged in the installation groove, and the sealing air bag is a hollow cavity made of rubber. Aiming at the problem that the working environment of a power device of an electric vehicle is severe, the invention provides the motor end cover with higher passive heat dissipation performance and overall sealing performance, so that the adaptability of the motor to the working environment is improved, and the service life of the motor is prolonged.

Description

technical field [0001] The invention relates to the related technical field of electric vehicle power devices, in particular to an electric vehicle motor end cover structure. Background technique [0002] The motor end cover is generally set at both ends of the stator shell to fix and support the motor shaft, so that the shaft on the shaft [0003] The rotor remains coaxial with the stator. [0004] Motor The motor is one of the main components in the powertrain of an electric vehicle. Since the motor is usually installed in the closed power compartment of the electric vehicle, and the sealing of the motor housing is also high, the overall heat dissipation is carried out by introducing external airflow. However, due to the harsh working environment and the huge amount of heat generated under continuous high-power output, the ordinary passive heat dissipation structure is no longer able to do what it wants. Sex, but the energy consumption is also significantly increased, af...

AI Technical Summary

Problems solved by technology

[0004] Motor The motor is one of the main components in the powertrain of an electric vehicle. Since the motor is usually installed in the closed power compartment of the electric vehicle, and the sealing of the motor housing is also high, the overall heat dissipation is carried out by introducing external airflow. However, due to the harsh working environment and the huge amount of heat generated under continuous high-power output, the ordinary passive heat dissipation structure is no longer able to do what it wants. performance, but the energy consumption is also significantly increased, affecting the mileage

In addition, usually the power wires of the motor core and carbon brush pass through the end face of the motor end cover, resulting in an opening in the motor housing that is not easy to seal and affects the sealing performance.

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