Before opening the end cover of the electric vehicle motor,it should be clean as a garden to prevent sundries from being absorbed on the magnetic steel in the motor.Mark the relative position of the end cap and the hub.Attention to electric vehicle motor:it is necessary to loosen the screws diagonally to avoid deformation of the motor housing.

After the motor is disassembled and the motor fault is eliminated,the original end cover mark must be installed to prevent the bore sweeping signs after the secondary device.

Lubrication of internal gear of motor

If the noise of the operation of the brush gear hub motor and the brushless gear hub motor increases first,and the gears in the motor are probably replaced,all tooth surfaces of the gears should be coated with grease.The motor manufacturer should generally use No.3 grease or the lubricant designated by the manufacturer.

Assembly of electric vehicle motor

Before assembling the brush motor,please check the elasticity of the internal spring of the brush holder,check whether the carbon brush and the brush holder collide,check whether the carbon brush can reach a very long distance in the brush holder,and pay attention to the correct positioning of the carbon brush and the phase changer to avoid jamming the carbon brush or brush holder.

When installing the motor,first of all,the impurities on the surface of the motor components should be cleared to avoid affecting the normal operation of the motor,and the hub body must be firmly fixed.The electric vehicle motor should avoid the impact and damage of components due to the strong attraction of magnetic steel during installation.

1.Look at the shell

The ordinary appearance of the motor with good outer plating is relatively bright,and the innovative machine is gray and relatively dark.Then we can look at the motor brand.Generally,relatively large manufacturers prefer to have their brands marked in the city,which is a manifestation of brand character.After that,we can see whether the motor has 3C certification,and the motor meeting the industry standard will be more secure.

2.Auditory power

During the test run,consumers can check whether the power is sufficient when starting with load.Those with insufficient power are likely to cut corners on the motor coil.

3.Touch temperature

After the motor stops,consumers can feel the temperature of the motor with their hands.The lower the temperature,the better the heat dissipation and function of the motor.

4.Check resistance

Development materials:

According to the difference of its application and application frequency,the form is also different.Different types of motors have different characteristics.At present,permanent magnet DC motors are widely used in electric vehicles.Electric vehicle motors can be divided into two categories:brushless motor and brushless motor according to the power on form of motor;

According to the machine layout of the motor assembly,it is generally divided into two categories:"toothed"(the motor speed is high,and the demand is delayed by the gear)and"toothless"(the motor torque output is not delayed in any way).