Maintainable flexible connection protection structure used for motor and electric control connection part

Abstract

The invention relates to a maintainable flexible connection protection structure used for a motor and an electric control connection part. The maintainable flexible connection protection structure comprises a rubber sealing ring, an upper cover and an opening cover, wherein the rubber sealing ring is a cylinder with openings in the two ends and is arranged on the outer side of a three-phase wiringharness in a sleeving manner; the lower port is connected to a motor assembly in a sealing manner; the upper port radially extends outwardly to form an annular plate; an upper pull plate is buckled on the bottom surface of the annular plate, and the upper pull plate is an annular body; a fastening screw in the box body and the upper pull plate form fastening connection, and the annular plate presses and props against the bottom of the box body to form plane sealing; the upper cover is arranged on the upper part of the box body, and an opening for operating the fastening screw in the box bodyand the three-phase wiring harness fixed end is formed in the top; the opening is opposite to the upper port of the rubber sealing ring; and the opening cover is used for shielding the upper cover opening. By adoption of the maintainable flexible connection protection structure, simple system detachment is realized; the problem that the integrated motor electrical control system can be detached and maintained only by overall lifting and detaching can be solved; vibration transfer caused by rigid connection is obstructed; and the overall reliability and durability of the controller system are improved and the maintenance cost is lowered.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a flexible connection protection structure used for the maintainability of the motor and electric control connection parts. Background technique [0002] Energy-saving and new energy vehicles have become one of the key development areas of "Made in China 2025" and are the key development direction of the national manufacturing power strategy; in the next 5-10 years, the world will usher in an important period of strategic opportunities for the reorganization, transformation and upgrading of the automobile industry. Automobile has become a national strategic industry. As the core technology of new energy vehicles, electronic control of drive motors is becoming more and more integrated and high-tech. Due to the vibration of the vehicle and the high temperature environment in the engine compartment of the car, the motor and its control system operate in a harsh environment with large vibratio...

AI Technical Summary

Problems solved by technology

[0003] Motor and control system are generally divided into two electrical connection methods, one is plug-in connection, which has high cost (two more connectors), three-phase line leakage, and the box at both ends needs to be sealed, which is not suitable for lightweight structure Design and other issues; one is the integrated rigid connection method

The assembly of the existing integrated motor and its control system adopts an integrated rigid connection method, which is a rigid connection structure. When the vehicle is running, the vibration of the road surface, transmission system and motor-reducer is easily transmitted to the integrated controller. Causes problems such as excessive vibration of electronic components, PCB resonance, and reduced reliability; in addition, in the prior art, the motor and control system assembly needs to be disassembled as a whole for maintenance, and then disassembled for inspection and maintenance after lifting, making maintenance difficult The problem

Images