What is the reason for the new energy vehicle motor sound

The causes of automobile motor noise are bearing failure, magnet loosening and falling off, axial tampering, and rotor sweeping. Bearing failure, the solution is to replace the new bearing. The magnet is loose, re-adhesive magnet. Axial runout, you can add the appropriate amount of washers on the axial. Rotor sweep, need to readjust the rotor and stator.

1, motor bearing clearance within the motor: motor bearings, also known as motor bearings or motor bearings, is specifically applied to the motor or motor on a special bearing. Motor bearing bearings are a part that supports the shaft, it can guide the rotation of the shaft, but also can withstand the shaft idle parts, the concept of bearings is very broad.

2, motor rotor sweep: also a rotating part in the motor. The motor consists of two parts, the rotor and stator, which is used to realize the electrical energy and mechanical energy and mechanical energy and electrical energy conversion device. Motor rotor is divided into motor rotor and generator rotor.

3, the magnet is loose, off. Magnets are synthesized from several hard strong metals, such as iron and aluminum, nickel, cobalt, and sometimes copper, niobium, tantalum synthesis, used to make super-hard permanent magnet alloy.

4, the motor internal axial tampering.

5, brush motor commutator surface oxidation, ablation, oil, unevenness, commutator loose.

6, the carbon brush holder loose, carbon brush holder is not correct.

Expanded Information:

Motor overhaul method:

1, the motor's no-load current is large when the motor's no-load current is greater than the limit data, indicating that the motor is faulty. Motor no-load current is large due to, motor internal mechanical friction, coil local short circuit, magnet demagnetization. Continue down to do the relevant tests and inspection items, you can further determine the cause of the failure or fault location.

2, motor heating motor heating is caused directly by the current. The method of dealing with the motor heat release, generally is to replace the motor.

(Photo / text / photo: Q&A caller) Mercedes-Benz S-Class Ask M5 Ideal ONE Buick GL8 Xiaopeng P5 Xiaopeng Automobile P7 @2019