The hollow cup motor uses a coreless rotor design, that is, the rotor is composed of a conductive coil, and the stator is composed of a permanent magnet or electromagnetic coil. This design avoids the core loss and hysteresis loss in the traditional motor, thus improving the efficiency of the motor.

Below, understand the serious problem of heating of the hollow cup motor, which may be caused by a variety of factors. Here are some of the main reasons and their analysis:

First, mechanical factors

Mechanical friction:

· Reason: hollow cup motor in the working process, due to the mutual friction of mechanical parts, will produce a lot of heat. If the mechanical accuracy is not high or the lubrication is insufficient, the coefficient of friction will increase, resulting in more heat generation.

· Solution: Improve the mechanical accuracy of the hollow cup motor and reduce unnecessary friction; Regularly lubricate the motor to keep the mechanical parts in good working condition.

Second, electrical factors

A. Electrical winding failure:

· Reason: Electrical winding is a key component in the motor, responsible for converting electrical energy into mechanical energy. If the winding breaks, short circuits or poor contact and other faults, it will lead to reduced energy conversion efficiency, while generating a lot of heat.

· Solution: Check the connection status and insulation performance of the electrical winding regularly, and repair or replace the winding in time when the fault is found.

⒉ Circuit failure:

· Cause: Problems such as loss and short circuit in the circuit will also cause the motor to heat up. For example, poor contact of the power line, excessive resistance, capacitor aging, etc., may increase the loss of the circuit, and then make the motor heat.

· Solution: Ensure that the power line is firmly connected and reliable to reduce the loss in the circuit; Periodically check the performance of components in the circuit, and replace them in time when aging or damage is found.

3. Design factors

A. Design defects:

· Reason: When the design of the hollow cup motor is unreasonable or the specifications do not meet the requirements, such as insufficient coil coil, poor design of heat dissipation structure, etc., it may cause the motor to heat seriously during operation.

· Solution: Optimize the design of the motor to ensure reasonable coordination between components; Strengthen the design of heat dissipation structure, improve the heat dissipation performance of the motor.

4. Use factors

⒈ Excessive load:

· Reason: If the hollow cup is overloaded for a long time, the heat generated will increase significantly, resulting in serious motor heating.

· Solution: Avoid the overload operation of the electric length of time, and adjust the load size according to the actual demand; In the case of long time operation, take appropriate heat dissipation measures.

⒉ The ambient temperature is too high:

· Reason: the working environment temperature of the motor is too high, which will also affect its heat dissipation performance, resulting in serious motor heating.

· Solution: Improve the working environment of the motor and reduce the ambient temperature; Add ventilation or take other heat dissipation measures if necessary.

V. Other factors

A. Material leakage:

· Reason: If the solid material or dust enters the motor and reaches the air gap between the stator and the rotor, it will cause the motor to sweep the bore and wear out the motor winding insulation, causing the motor to heat up or even damage.

· Solution: Ensure good sealing performance of the motor to prevent material leakage into the motor; Check the cleaning inside the motor regularly, and clean up foreign bodies in time.