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CN-224233522-U - Permanent magnet synchronous motor

CN224233522UCN 224233522 UCN224233522 UCN 224233522UCN-224233522-U

Abstract

The application relates to the technical field of permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor which comprises a stator assembly, a rotor assembly, a shell, a cooling module and an intelligent control unit, wherein winding coils are embedded in stator grooves, a permanent magnet ring is arranged on the outer side of a rotor, an air gap is 0.8mm to 1.2mm and is provided with a diversion groove, the heat dissipation effect is enhanced, the cooling module is used for cooling through cooling liquid, the intelligent control unit is used for monitoring the rotating speed and the load in real time, the current input is dynamically regulated to accurately control the torque, and the outer surface of the shell is provided with cooling fins to improve the overall heat dissipation performance.

Inventors

  • QI SHENG
  • MENG LILI

Assignees

  • 大连天晟永磁电机有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (6)

  1. 1. The permanent magnet synchronous motor is characterized by comprising a shell, a stator assembly, a rotor assembly, a cooling module and an intelligent control unit, wherein the stator assembly is fixedly arranged inside the shell, the rotor assembly is rotationally connected with the shell through a bearing, a plurality of evenly distributed stator grooves are formed in the inner side of the stator assembly, winding coils are embedded in the stator grooves, a permanent magnet ring is fixedly arranged on the outer side of the rotor assembly, an air gap is formed between the outer surface of the permanent magnet ring and the inner surface of the stator assembly, the cooling module is fixedly arranged at the top of the shell, the output end of the cooling module extends to the position between the stator assembly and the rotor assembly and is communicated with the air gap, the intelligent control unit is fixedly arranged at the bottom of the shell, and the signal output end of the intelligent control unit is electrically connected with the stator assembly.
  2. 2. The permanent magnet synchronous motor according to claim 1, wherein the cooling module comprises a cooling liquid storage tank, a micro pump, a conduit and a cooling nozzle, the cooling liquid storage tank is fixedly arranged at the top of the shell, the micro pump is fixedly arranged at the side of the cooling liquid storage tank, the output end of the micro pump is connected with the cooling nozzle through the conduit, the cooling nozzle is fixedly arranged on the inner wall of the shell and the spraying direction is towards the air gap, a backflow channel is arranged at the bottom of the cooling liquid storage tank, the backflow channel is communicated with the cooling liquid storage tank, and a filter screen is arranged at the inlet of the backflow channel.
  3. 3. The permanent magnet synchronous motor according to claim 2, wherein the intelligent control unit comprises a signal processor, a speed sensor and a power regulating module, the speed sensor is mounted on the rotor assembly and is electrically connected with the signal processor, an output end of the signal processor is electrically connected with the power regulating module, and an output end of the power regulating module is electrically connected with the winding coil of the stator assembly.
  4. 4. A permanent magnet synchronous motor according to claim 3, wherein the width of the air gap is 0.8mm to 1.2mm, a plurality of diversion trenches are uniformly distributed in the circumferential direction in the air gap, and the depth of the diversion trenches is 0.2mm to 0.4mm.
  5. 5. The permanent magnet synchronous motor of claim 4, wherein the permanent magnet ring is formed by splicing a plurality of sections of arc-shaped permanent magnets, positioning protrusions are arranged at two ends of each section of arc-shaped permanent magnet, and the positioning protrusions are matched with adjacent arc-shaped permanent magnets.
  6. 6. A permanent magnet synchronous motor according to claim 5, wherein a plurality of heat dissipation fins are arranged on the outer surface of the housing, the heat dissipation fins are uniformly distributed along the axial direction of the housing, and the thickness of the heat dissipation fins is 1mm to 2mm.

Description

Permanent magnet synchronous motor Technical Field The utility model relates to the technical field of motors, in particular to a permanent magnet synchronous motor. Background Transportation, home appliances, and the like. However, in practical applications, the existing permanent magnet synchronous motor still has a plurality of problems under the conditions of high rotation speed and high load. For example, during high-speed operation, the motor tends to suffer from a phenomenon of large torque ripple, resulting in a decrease in output stability, and at the same time, under high load conditions, the motor internal loss increases, and overheating problems tend to occur, thereby affecting its efficiency, reliability and service life. The permanent magnet synchronous motor on the market at present is difficult to realize efficient, stable and reliable operation under the conditions of high rotating speed and high load, and particularly shows prominence under variable working conditions, so that a novel design of the permanent magnet synchronous motor is needed to overcome the defects in the prior art and provide a solution which is more efficient, stable and suitable for various working conditions. Disclosure of utility model The utility model aims to avoid the defects of the prior art and provide a permanent magnet synchronous motor, which effectively solves the overheating problem and the torque fluctuation problem under the conditions of high rotating speed and high load by optimizing the structural design between a stator and a rotor and introducing a dynamic cooling system and an intelligent torque control module, thereby improving the running efficiency, the stability and the service life of the motor. The utility model provides a permanent magnet synchronous motor, including stator module, rotor subassembly and shell, stator module fixed mounting is inside the shell, rotor subassembly passes through the bearing and rotates with the shell and be connected, stator module's inboard is provided with a plurality of evenly distributed's stator groove, the embedded winding coil that is equipped with of stator groove, rotor module's outside fixed mounting has the permanent magnet ring, form the air gap between the surface of permanent magnet ring and stator module's the internal surface, the top fixed mounting of shell has cooling module, cooling module's output extends to between stator module and the rotor subassembly and with the air gap intercommunication, the bottom fixed mounting of shell has intelligent control unit, intelligent control unit's signal output part and stator module electric connection. The cooling module comprises a cooling liquid storage box, a micropump is fixedly arranged on the side of the cooling liquid storage box, the output end of the micropump is connected with a cooling nozzle through a guide pipe, the cooling nozzle is fixedly arranged on the inner wall of the shell, the spraying direction of the cooling nozzle faces to an air gap, a backflow channel is arranged at the bottom of the cooling liquid storage box and is communicated with the cooling liquid storage box, and a filter screen is arranged at the inlet of the backflow channel. Specifically, the intelligent control unit comprises a signal processor, the input end of the signal processor is electrically connected with a speed sensor on the rotor assembly, the output end of the signal processor is electrically connected with the power adjusting module, the output end of the power adjusting module is electrically connected with the winding coil of the stator assembly, and the signal processor dynamically adjusts the current input of the winding coil to realize accurate control of output torque by monitoring the rotating speed and the load state of the rotor assembly in real time. Preferably, the width of the air gap is between 0.8mm and 1.2mm, and a plurality of diversion trenches uniformly distributed along the circumferential direction are arranged in the air gap, and the depth of the diversion trenches is between 0.2mm and 0.4mm and used for enhancing the fluidity and the heat dissipation effect of the cooling liquid. Specifically, the permanent magnet ring is formed by splicing a plurality of sections of arc-shaped permanent magnets, positioning protrusions are arranged at two ends of each section of arc-shaped permanent magnet and are matched with grooves of adjacent arc-shaped permanent magnets, so that the integrity and stability of the permanent magnet ring are ensured. Further, a plurality of radiating fins are arranged on the outer surface of the shell, and are uniformly distributed along the axial direction of the shell, and the thickness of each radiating fin is 1mm to 2mm and is used for improving the radiating performance of the shell. According to the utility model, through optimizing the structural design between the stator and the rotor and combining the dynamic cooling system and the intelligent torque co