CN116827006A

CN116827006A - Built-in permanent magnet synchronous motor control structure

Info

Publication number: CN116827006A
Application number: CN202310586966.7A
Authority: CN
Inventors: 苏立; 毛成; 文贤馗; 沈春和; 陈满华; 古庭赟; 张俊伟; 牛唯; 曾鹏; 张历; 辛明勇; 龙秋风; 樊磊
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-09-29

Abstract

The application relates to the technical field of synchronous motors, in particular to a built-in permanent magnet synchronous motor control structure which comprises a motor main body, a motor controller and a motor control unit, wherein the motor main body comprises an upper shell and a lower shell, a mounting cavity, a stator, a rotor and a motor controller are formed between the upper shell and the lower shell; the heat dissipation mechanism comprises a cooling assembly and an air inlet assembly; the control module comprises an interaction controller, a temperature detection sensor and a wire holder, wherein the interaction controller is electrically connected with the temperature detection sensor, the auxiliary fan, the inflow valve, the drainage valve and the motor controller.

Description

Built-in permanent magnet synchronous motor control structure

Technical Field

The application relates to the technical field of synchronous motors, in particular to a built-in permanent magnet synchronous motor control structure.

Background

The built-in permanent magnet synchronous motor is a synchronous motor with a rotor made of permanent magnet materials, and compared with the traditional direct current motor, the built-in permanent magnet synchronous motor has the advantages of no need of a commutator and an electric brush, high power factor, small stator current and stator resistance loss, measurable rotor parameters, good control performance and the like. The built-in permanent magnet synchronous motor has the characteristics of nonlinearity, multiple variables and the like when in working state control, wherein the built-in permanent magnet and electromagnet can change the magnetic field intensity of the built-in permanent magnet and electromagnet due to the temperature rise when the motor works, so that the voltage and current on a stator winding are required to be regulated for stabilizing the rotating speed of the motor according to the changed magnetic field intensity, and the nonlinearity and the overhigh temperature change also easily cause the stator winding and the paint layer falling off of an enameled wire on a rotor winding so as to reduce the insulating property, so that the temperature inside the motor is required to be accurately controlled, and the control difficulty of the motor is reduced by stabilizing the temperature parameter. However, the existing permanent magnet synchronous motor lacks a good control method for the temperature of the motor, and only can simply dissipate heat through fan blades coaxially arranged with a motor rotor, so that the influence of the temperature is difficult to effectively eliminate, and particularly when the motor works in a closed space or a hot zone with higher ambient temperature, the control caused by the temperature cannot be difficult to eliminate.

If the application is a novel control device which can well control the temperature in the motor so as to reduce the difficulty in controlling the working state of the synchronous motor, the problem can be effectively solved, and therefore, the application provides a built-in permanent magnet synchronous motor control structure.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.

The present application has been made in view of the above-mentioned problems occurring in the prior art.

Accordingly, the present application is directed to a control structure of an internal permanent magnet synchronous motor, which aims to: the problem that the rotating speed of the motor is difficult to control due to the fact that the temperature is increased when the existing permanent magnet synchronous motor works and the temperature inside the motor is difficult to effectively control is solved.

In order to solve the technical problems, the application provides the following technical scheme: the motor main body comprises an upper shell and a lower shell connected to one side of the upper shell, an installation cavity is formed between the upper shell and the lower shell, a stator and a rotor are concentrically arranged in the lower shell, and a motor controller electrically connected with a stator winding on the stator is arranged in the installation cavity;

and the heat dissipation mechanism comprises a cooling assembly and an air inlet assembly.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the cooling assembly comprises a spiral cooling flow passage arranged between the lower shell and the stator, a flow inlet pipe and a flow outlet pipe which are respectively arranged at two ends of the spiral cooling flow passage, a flow inlet valve arranged on the flow inlet pipe and a flow outlet valve arranged on the flow outlet pipe.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the air inlet assembly comprises a filter box arranged on the lower shell, a flow guide pipe arranged in the installation cavity and communicated with the filter box, an auxiliary cooling fin and an auxiliary fan, wherein the auxiliary cooling fin and the auxiliary fan are arranged on the outer surface of the lower shell, the two auxiliary fans are respectively arranged on two sides of the auxiliary cooling fin, the output end of each auxiliary fan is provided with an air nozzle which faces the corresponding auxiliary cooling fin, and the auxiliary fan is communicated with the flow guide pipe.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the intelligent control system comprises a motor controller, a lower shell, an auxiliary fan, a control module, an interaction controller, a temperature detection sensor, a wire holder and a flow inlet valve, wherein the control module comprises the interaction controller and the temperature detection sensor which are arranged on one side of the lower shell, the wire holder is connected with the motor controller, and the interaction controller is electrically connected with the temperature detection sensor, the auxiliary fan, the flow inlet valve, the flow outlet valve and the motor controller.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the motor main body further comprises fan blades coaxially connected to one side of the rotor, an air inlet protection cover arranged on one side of the fan blades, a top radiating fin arranged on one side surface of the upper shell and a top heat conduction copper pipe connected to the top radiating fin, a flow guide channel arranged in a circumferential array is formed in one end surface of the stator, a heat dissipation copper sheet is arranged on the inner wall of the flow guide channel, and the flow guide channel penetrates through the stator.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the control module further comprises an air pressure detection sensor and an air charging pipe, wherein the air pressure detection sensor and the air charging pipe are arranged on the surface of one side of the lower shell, an air inlet one-way valve is arranged on the outer wall of the air charging pipe, the air charging pipe is communicated with the mounting cavity, and the air pressure detection sensor is electrically connected with the interaction controller.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the control module further comprises a display and an alarm which are arranged on the surface of one side of the lower shell, the display and the alarm are electrically connected with the interaction controller, and the interaction controller is a singlechip controller.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the utility model discloses a honeycomb duct, motor controller, filter box, be provided with high-efficient filter screen and active carbon adsorbed layer on honeycomb duct one side outer wall on, the heat pipe with motor controller one side wall laminating, be provided with high-efficient filter screen and active carbon adsorbed layer in the filter box.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the cooling assembly further comprises a bottom radiating fin arranged on the lower shell, two ends of the bottom radiating fin are respectively positioned inside the spiral cooling flow passage and outside the lower shell, and a heat conducting fin is arranged between the stator and the mounting cavity.

As a preferable scheme of the control structure of the built-in permanent magnet synchronous motor, the application comprises the following steps: the cooling assembly further comprises a bottom cooling pipe arranged between the inflow pipe and the drainage pipe, and the bottom cooling pipe is attached to the bottom of the motor controller.

The application has the beneficial effects that: the device can well control the temperature in the motor, thereby reducing the difficulty in controlling the working state of the synchronous motor, reducing the damage of temperature change to parts in the motor, improving the control precision and the service life of the motor, and having high practical value.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 and 2 are schematic views of the overall structure of the present application.

Fig. 3 is a schematic view of the internal structure of the present application.

Fig. 4 is a cross-sectional view of the present application at an inflation tube.

Fig. 5 is a cross-sectional view of the drain of the present application.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Further, in describing the embodiments of the present application in detail, the cross-sectional view of the device structure is not partially enlarged to a general scale for convenience of description, and the schematic is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Example 1

Referring to fig. 1 to 4, for the first embodiment of the present application, a control structure of a built-in permanent magnet synchronous motor is provided, and the present application can well control the temperature in the motor through the device, thereby reducing the difficulty in controlling the working state of the synchronous motor, and reducing the damage of temperature variation to the parts in the motor.

Specifically, the motor main body 100 includes an upper casing 101 and a lower casing 102 connected to one side of the upper casing 101, a mounting cavity a is formed between the upper casing 101 and the lower casing 102, a stator B and a rotor C are concentrically arranged in the lower casing 102, and a motor controller D electrically connected with a stator winding on the stator B is arranged in the mounting cavity a;

heat dissipation mechanism 200, heat dissipation mechanism 200 includes cooling assembly 201 and air intake assembly 202.

The upper shell 101 and the lower shell 102 are fixedly connected through bolts, a stator winding is arranged on a stator B, a rotor winding is arranged on a rotor C, the stator B and the rotor C are arranged in a conventional technology (although not illustrated), a motor controller D is arranged above the stator B, a current control circuit is arranged in the motor controller D and is used for controlling the current and the voltage on the stator winding, so that the rotating speed of the rotor C is stabilized by regulating the current and the voltage wound by the stator according to the working requirement and the change of a magnetic field generated by a permanent magnet on the rotor C under the influence of temperature; the lower housing 102 may further be provided with a rotation speed sensor for detecting the rotation speed of the rotor C and electrically connected to the motor controller D;

through setting up cooling mechanism 200, can initiatively carry out effectual control to the inside temperature of motor to can initiatively select multistage cooling treatment according to the inside temperature of motor.

Example 2

Referring to fig. 1 to 5, in a second embodiment of the present application, based on the first embodiment, it is preferable that the motor main body 100 is configured to passively cool the interior of the motor, and the cooling assembly 201 and the air intake assembly 202 are configured to actively cool the interior of the motor, so that the temperature in the motor can be well controlled through multi-level cooling treatment, thereby reducing difficulty in controlling the working state of the synchronous motor and reducing damage to parts in the motor caused by temperature variation.

The motor main body 100 further comprises a fan blade 103 coaxially connected to one side of the rotor C and an air inlet protection cover 104 arranged on one side of the fan blade 103, a flow guide channel 105 circumferentially arranged in an array is formed in one end surface of the stator B, a heat dissipation copper sheet 106 is arranged on the inner wall of the flow guide channel 105, and the flow guide channel 105 penetrates through two ends of the stator B.

Specifically, the fan blades 103 are fixedly connected to the rotating shaft of the rotor C, rotate synchronously with the rotor C, the air inlet protective cover 104 is fixed on the outer surface of the lower shell 102 and wraps the fan blades 103, a primary filter screen or a middle-effect filter screen for filtering dust in air is arranged on the air inlet protective cover 104, the diversion channel 105 also penetrates through the lower shell 102, and the heat dissipation efficiency of the stator B is improved through the arranged heat dissipation copper sheet 106; the fan blades 103 are driven to rotate by the rotor C, so that external air can be sucked into the air inlet protecting cover 104, and then the air passes through the diversion channel 105 to dissipate heat of the stator B.

Further, the motor main body 100 further includes a top heat sink 107 disposed on a side surface of the upper housing 101, a top heat conduction copper tube 108 connected to the top heat sink 107, and an air pressure detection sensor 109 and an air inflation tube 110 disposed on a side surface of the lower housing 102, wherein an air inlet check valve 111 is disposed on an outer wall of the air inflation tube 110, the air inflation tube 110 is communicated with the mounting cavity a, and the air pressure detection sensor 109 is electrically connected with the interaction controller 301.

Specifically, the top heat conduction copper pipe 108 is arranged in the installation cavity a and is attached to the upper surface of the motor controller D, and the air pressure detection sensor 109 is used for detecting the air pressure in the installation cavity a; the air charging tube 110 can charge the air with better heat conducting performance such as hydrogen into the installation cavity A, thereby improving the ability of heat source in the installation cavity A to transfer heat to the motor shell through the flow of the air and improving the heat dissipation effect.

Further, the cooling assembly 201 includes a spiral cooling flow path 201a provided between the lower case 102 and the stator B, an inflow pipe 201B and a drain pipe 201c provided at both ends of the spiral cooling flow path 201a, respectively, an inflow valve 201d provided on the inflow pipe 201B, and a drain valve 201e provided on the drain pipe 201 c.

The cooling assembly 201 further includes a bottom fin 201f provided on the lower housing 102, and both ends of the bottom fin 201f are located inside the spiral cooling flow passage 201a and outside the lower housing 102, respectively.

The cooling assembly 201 further includes a bottom cooling tube 201h disposed between the intake tube 201b and the exhaust tube 201c, the bottom cooling tube 201h conforming to the bottom of the motor controller D.

Specifically, the stator B is isolated from the installation cavity a by a heat conducting fin, the spiral cooling flow channel 201a is attached to the outer side of the stator B, the inflow pipe 201B and the drainage pipe 201C are connected with external cooling fluid supply equipment, the spiral cooling flow channel 201a can ensure that cooling medium fed by the inflow pipe 201B can effectively cool the stator B around the outer side of the stator B in a unidirectional manner, and therefore heat generated on the stator B and the rotor C is effectively taken away by the cooling medium; the bottom cooling pipe 201h is communicated with the inflow pipe 201b and the drainage pipe 201c, and a one-way valve is arranged in the bottom cooling pipe 201h to radiate heat of the motor controller D and the installation cavity A; the heat dissipation to the inside of the lower case 102 and the spiral cooling flow path 201a is accelerated by the bottom fin 201f provided.

Further, the air intake assembly 202 includes a filter box 202a disposed on the lower housing 102, a flow guiding tube 202b disposed in the installation cavity a and communicated with the filter box 202a, an auxiliary cooling fin 202c and an auxiliary fan 202d disposed on the outer surface of the lower housing 102, the two auxiliary fans 202d are disposed on two sides of the auxiliary cooling fin 202c respectively, an air nozzle 202e for injecting air toward the auxiliary cooling fin 202c is disposed at an output end of the auxiliary fan 202d, and the auxiliary fan 202d is communicated with the flow guiding tube 202 b.

The outer wall of one side of the flow guide pipe 202b is provided with a heat pipe 202b-1, the heat pipe 202b-1 is attached to one side wall of the motor controller D, and a high-efficiency filter screen and an activated carbon adsorption layer are arranged in the filter box 202 a.

Specifically, the auxiliary fan 202d can suck the outside air through the filter box 202a, so that the air exchanges heat with the air and the heat conducting structure in the installation cavity A in the guide pipe 202b, and finally is sprayed to the auxiliary cooling fins 202c by the air nozzle 202e, and then the auxiliary cooling fins 202c are cooled, so that the motor is effectively cooled.

Example 3

Referring to fig. 1 to 5, a third embodiment of the present application is based on the second embodiment, except that the control module 300 is provided, so that the device can monitor the temperature inside the motor in real time, and perform timely and effective multistage cooling treatment.

The control module 300, the control module 300 includes an interaction controller 301 and a temperature detection sensor 302 disposed on one side of the lower housing 102, and a wire holder 303 connected to the motor controller D, where the interaction controller 301 is electrically connected to the temperature detection sensor 302, the auxiliary fan 202D, the inflow valve 201D, the outflow valve 201e, and the motor controller D.

The control module 300 further includes a display 306 and an alarm 307 disposed on a side surface of the lower housing 102, where the display 306 and the alarm 307 are electrically connected to the interaction controller 301, and the interaction controller 301 is a single-chip microcomputer controller.

Specifically, the temperature detection sensor 302 is used for detecting temperature changes in the motor housing, the wire holder 303 is also used for connecting external power supply equipment, the display 306 is used for displaying the current control state of the motor, the alarm 307 prompts alarm information such as temperature exceeding, air pressure exceeding or abnormal operation through a buzzer or a signal lamp, and the like, and the interaction controller 301 is a single-chip microcomputer controller and is mainly used for stabilizing the temperature in the motor.

In a specific implementation process, the device controls the temperature inside the motor in the working process by adopting the following method, so that the working condition of the motor is stabilized, the control difficulty inside the motor is reduced, and the synchronous rotating speed is convenient to stabilize.

1. When the environment temperature is at a proper working temperature and the control influence of the motor is small due to low temperature rise in the motor, the stator B is radiated through the fan blades 103 coaxially connected with the rotor, at the moment, the outside air passes through the diversion channel 105 under the drive of the fan blades 103, and the heat in the stator B and the rotor C is taken away through the inner wall of the diversion channel 105 so as to achieve the aim of reducing the temperature;

2. when the environment temperature is at a proper working temperature and the temperature of the interior of the motor is higher, and the fan blades 103 are adopted to control the temperature difficultly, the auxiliary fan 202d can be turned on at the moment, external air is filtered through the filter box 202a under the drive of the auxiliary fan 202d, then the external air exchanges heat with parts in the installation cavity A through the guide pipe 202B, meanwhile, heat transferred on the rotor C and the stator B is taken away, and finally, the heat is blown to the auxiliary cooling fins 202C again, so that the temperature on the auxiliary cooling fins 202C is reduced, and the aim of taking away the heat generated in the interior of the motor quickly is fulfilled;

3. when the environment temperature is not suitable for the motor to work or the auxiliary fan is adopted to effectively control the temperature rise in the motor, external cooling medium supply equipment can be connected through the inflow pipe 201b and the drainage pipe 201c, so that cooling medium is fed into the spiral cooling flow channel 201a through the inflow pipe 201b to efficiently dissipate heat in the motor, then the cooling medium in the spiral cooling flow channel 201a is discharged through the drainage pipe 201c, and the rapid heat dissipation can be effectively realized by utilizing the huge temperature difference between the cooling medium and the interior of the motor in the mode, so that the temperature in the motor is controlled to be always in a proper range, the difficulty of synchronous rotation control in the motor is effectively reduced, the damage to the interior of the motor due to temperature change is effectively reduced, the service life of the motor is effectively prolonged, and the motor has high practical value.

It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the application, or those not associated with practicing the application).

It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.

Claims

1. A built-in permanent magnet synchronous motor control structure is characterized in that: comprising the steps of (a) a step of,

the motor comprises a motor main body (100), wherein the motor main body (100) comprises an upper shell (101) and a lower shell (102) connected to one side of the upper shell (101), a mounting cavity (A) is formed between the upper shell (101) and the lower shell (102), a stator (B) and a rotor (C) are concentrically arranged in the lower shell (102), and a motor controller (D) electrically connected with a stator winding on the stator (B) is arranged in the mounting cavity (A);

the cooling device comprises a heat dissipation mechanism (200), wherein the heat dissipation mechanism (200) comprises a cooling assembly (201) and an air inlet assembly (202).

2. The built-in permanent magnet synchronous motor control structure according to claim 1, wherein: the cooling assembly (201) comprises a spiral cooling flow passage (201 a) arranged between the lower shell (102) and the stator (B), an inflow pipe (201B) and a drainage pipe (201 c) respectively arranged at two ends of the spiral cooling flow passage (201 a), an inflow valve (201 d) arranged on the inflow pipe (201B) and a drainage valve (201 e) arranged on the drainage pipe (201 c).

3. The built-in permanent magnet synchronous motor control structure according to claim 2, wherein: the air inlet assembly (202) comprises a filter box (202 a) arranged on the lower shell (102), a guide pipe (202 b) arranged in the installation cavity (A) and communicated with the filter box (202 a), an auxiliary cooling fin (202 c) and an auxiliary fan (202 d) arranged on the outer surface of the lower shell (102), the two auxiliary fans (202 d) are respectively arranged on two sides of the auxiliary cooling fin (202 c), and an air nozzle (202 e) for injecting air towards the auxiliary cooling fin (202 c) is arranged at the output end of the auxiliary fan (202 d), and the auxiliary fan (202 d) is communicated with the guide pipe (202 b).

4. The built-in permanent magnet synchronous motor control structure according to claim 3, wherein: the intelligent control system is characterized by further comprising a control module (300), wherein the control module (300) comprises an interaction controller (301) and a temperature detection sensor (302) which are arranged on one side of the lower shell (102) and a wiring seat (303) which is connected with the motor controller (D), and the interaction controller (301) is electrically connected with the temperature detection sensor (302), the auxiliary fan (202D), the inflow valve (201D), the drainage valve (201 e) and the motor controller (D).

5. The built-in permanent magnet synchronous motor control structure according to claim 4, wherein: the motor main body (100) further comprises fan blades (103) coaxially connected to one side of the rotor (C) and an air inlet protection cover (104) arranged on one side of the fan blades (103), a flow guide channel (105) which is arranged in a circumferential array is formed in one end surface of the stator (B), radiating copper sheets (106) are arranged on the inner wall of the flow guide channel (105), and the flow guide channel (105) penetrates through two ends of the stator (B).

6. The built-in permanent magnet synchronous motor control structure according to claim 5, wherein: the motor main body (100) further comprises a top radiating fin (107) arranged on one side surface of the upper shell (101), a top heat conduction copper pipe (108) connected to the top radiating fin (107) and an air pressure detection sensor (109) and an air charging pipe (110) arranged on one side surface of the lower shell (102), an air inlet one-way valve (111) is arranged on the outer wall of the air charging pipe (110), the air charging pipe (110) is communicated with the mounting cavity (A), and the air pressure detection sensor (109) is electrically connected with the interaction controller (301).

7. The built-in permanent magnet synchronous motor control structure according to claim 5 or 6, characterized in that: the control module (300) further comprises a display (306) and an alarm (307) which are arranged on one side surface of the lower shell (102), the display (306) and the alarm (307) are electrically connected with the interaction controller (301), and the interaction controller (301) is a singlechip controller.

8. The built-in permanent magnet synchronous motor control structure according to claim 7, wherein: the utility model discloses a filter device, including honeycomb duct (202 b), filtration box (202 a), be provided with on honeycomb duct (202 b) one side outer wall heat pipe (202 b-1), heat pipe (202 b-1) with a motor controller (D) side wall laminating, be provided with high-efficient filter screen and active carbon adsorption layer in filtration box (202 a).

9. The built-in permanent magnet synchronous motor control structure according to claim 8, wherein: the cooling assembly (201) further comprises bottom cooling fins (201 f) arranged on the lower shell (102), and two ends of the bottom cooling fins (201 f) are respectively located inside the spiral cooling flow channel (201 a) and outside the lower shell (102).

10. The built-in permanent magnet synchronous motor control structure according to claim 9, wherein: the cooling assembly (201) further comprises a bottom cooling pipe (201 h) arranged between the inflow pipe (201 b) and the drainage pipe (201 c), and the bottom cooling pipe (201 h) is attached to the bottom of the motor controller (D).