Insulation and anti-corrosion structure of a brushless DC motor immersed in coolant

Abstract

The embodiment of the invention discloses an insulation and anti-corrosion structure of a brushless DC motor immersed in cooling liquid. In this structure, the rotor and two bearings are nested on the motor shaft, the two bearings are located at both ends of the rotor, and one bearing is located at the front end cover The other bearing is located in the bearing chamber of the rear end cover. The rotor and two bearings are used to rotate around the axis of the motor shaft and are axially fixed; the stator is sleeved in the housing, and the stator and the housing are interference fit. , the front end cover is fixedly installed at one end of the housing, and the rear end cover is fixedly installed at the other end of the housing; the position sensor is installed in the rear end cover to measure the rotation position of the rotor; the stator and the position sensor are respectively passed through the potting glue and Protective case for independent protection. The embodiment of the present invention solves the problem that the sealing structure of the DC motor in the existing hydraulic pump system is easily damaged, causing the coolant to enter the inside of the motor, resulting in failure of the motor, and the problem that the high-speed hydraulic pump system cannot be sealed.

Description

technical field [0001] The invention relates to but not limited to the technical field of insulation and anticorrosion, in particular to an insulation and anticorrosion structure of a brushless DC motor immersed in cooling liquid. Background technique [0002] In the traditional hydraulic pump system, a low-speed motor with a sealed structure is generally used, and the general speed is not more than 3000r / min, and the coolant is very corrosive. The seal structure of the DC motor in the hydraulic pump system is easily damaged, making the coolant Into the interior of the motor, causing the motor to fail. [0003] In addition, for high-speed hydraulic pump systems, there is currently no reliable way to seal the rotating body, so a motor that does not use a sealed structure is needed to solve the problem of coolant leakage in the DC motor. Contents of the invention [0004] Purpose of the present invention: The present invention provides an insulation and anti-corrosion struc...

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Problems solved by technology

[0004] Purpose of the present invention: The present invention provides an insulation and anti-corrosion structure of a brushless DC motor immersed in cooling liquid, so as to solve the problem that the sealing structure of the DC motor in the existing hydraulic pump system is easily damaged, and the cooling liquid enters the inside of the motor, causing the motor to fail problems, and the problem that the high-speed hydraulic pump system cannot be sealed

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