Fault analysis of electric vehicle motor

If the electric vehicle motor is in an overloaded state for a long time, it is necessary to carry out maintenance work after each shutdown to avoid damage and failure of the motor in a short period of time due to such abnormal use state. In order to enable everyone to better control the motor, Xiaobian talks about the faults and corresponding methods that the motor is more prone to, so that everyone will not have a situation when they face the motor failure.

 

1. The electric vehicle motor has mechanical collision or mechanical noise inside during operation. No matter whether it is a high-speed motor or a low-speed motor, there should be no mechanical collision or discontinuous irregular mechanical noise when the load is running. Different types of motors can be used differently. Method for repair.

 

2. The mileage of the whole vehicle is shortened, the electric motor is weak, the mileage of the vehicle is short and the motor is weak (commonly known as the motor is not strong). The reason is that the fault of the vehicle is not caused by the motor. This is related to the attenuation of the battery capacity, the charger is not fully charged, and the controller parameters drift (the PWM signal does not reach 100%).

 

3, the lack of phase of the brushless motor, the lack of phase of the brushless motor is generally caused by the damage of the Hall element of the brushless motor. We can compare the resistance of the Hall element output lead to the Hall ground wire and the lead of the relative Hall power supply, and use the comparison method to determine which Hall element has failed.

 

In the long-term use of electric motor motors, regular maintenance and maintenance must be carried out to ensure that the motor can be used in good condition. At the same time, Xiaobian suggested that you have more knowledge about the motor fault, so that it can solve the problem calmly, quickly and effectively when the motor fails, and avoid the fault affecting the amplification.