A permanent magnet synchronous motor intelligent temperature control structure

Abstract

The invention discloses an intelligent temperature control structure of a permanent magnet synchronous motor, which belongs to the technical field of motors. The technical key points are: the structure is installed in a motor body, a motor shaft is arranged on the motor body, and a lubricating and cooling mechanism is arranged to realize not only air blowing and heat dissipation treatment, but also lubrication treatment of the rotation of the motor shaft, that is, part of the heat is taken away by the flow of lubricating oil, thereby realizing the temperature reduction treatment of the motor shaft, and the circulating cooling mechanism is arranged to realize the continuous cooling and transportation of the coolant to the inside of the cooling chamber, thereby better realizing the temperature reduction treatment of the motor shaft and the motor body, thereby realizing the temperature reduction protection of the motor body operation, and the circulating cooling mechanism can be driven to operate accordingly by the temperature control driving mechanism, and the temperature reduction treatment can be carried out without manual intervention. This design realizes intelligent temperature control during the operation of the motor body, prolongs the service life, and has the advantages of convenient temperature reduction control and good heat dissipation and cooling effect.

Description

Technical Field

[0001] The present invention relates to the field of motors, and in particular to an intelligent temperature control structure of a permanent magnet synchronous motor. Background Art

[0002] With the rapid development of science and technology and the continuous improvement of energy efficiency, permanent magnet synchronous motors have been widely used in many fields due to their advantages such as high efficiency, high power density, high control accuracy and brushless design, such as industrial automation, electric vehicles, wind power generation and refrigeration equipment. However, with the improvement of permanent magnet synchronous motor power density and the diversification of application scenarios, its temperature management problem has become increasingly prominent and has become a key factor restricting its further performance improvement.

[0003] A permanent magnet synchronous motor generates a lot of heat during operation, causing the motor temperature to rise. Excessive temperature will not only affect the magnetic properties of the permanent magnet, causing permanent demagnetization of the permanent magnet and damaging the motor performance, but also reduce the reliability of the winding insulation and increase the risk of motor burnout. It will also affect the lubricity and strength of the bearings and shorten the service life of the motor. Therefore, effective temperature control is of great significance to ensure the stable operation and extend the service life of the permanent magnet synchronous motor.

[0004] At present, the conventional temperature reduction measures are mostly to open vents and add fans for air cooling. The cooling effect of the vents is relatively poor, and the added fans require additional electricity to drive. The overall cost is high and the heat dissipation effect is poor, which cannot meet the actual use needs.

[0005] Therefore, it is necessary to provide an intelligent temperature control structure of a permanent magnet synchronous motor to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide an intelligent temperature control structure for a permanent magnet synchronous motor, aiming to solve the technical problems raised in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A permanent magnet synchronous motor intelligent temperature control structure is installed in a motor body, a motor shaft is arranged on the motor body, and includes a mounting shell, the mounting shell is installed inside the motor body, a second vent for ventilation is opened on the mounting shell, a cooling cavity for containing coolant is opened in the motor shaft, a rotor is fixedly connected to the motor shaft, a stator is arranged outside the rotor, and the stator is fixedly installed inside the mounting shell, and also includes:

[0009] A lubricating and cooling mechanism is installed on the outside of the motor shaft and is used to lubricate and cool the motor shaft. The lubricating and cooling mechanism includes a motor sleeve wrapped around the outside of the motor shaft, and an oil transfer rod for discharging lubricating oil is provided at the connection between the motor sleeve and the motor shaft, and a plurality of oil transfer grooves are provided on the oil transfer rod;

[0010] A circulating cooling mechanism, which is installed at the end of the motor shaft and is used to circulate and extract the coolant in the motor shaft for cooling treatment. The circulating cooling mechanism includes a delivery cylinder and a rotating connection seat for circulating and extracting the coolant. One end of the motor shaft is rotatably connected to the rotating connection seat, and the rotating connection seat is fixedly installed on the mounting shell. The rotating connection seat is connected to the cooling cavity in the motor shaft through a cooling water pipe;

[0011] A temperature control driving mechanism is installed inside the mounting shell and is used to drive the circulating cooling mechanism to dock with the lubricating cooling mechanism to form a drive. The temperature control driving mechanism includes a thermal expansion block for temperature control drive. The thermal expansion block is arranged and installed inside the connecting box, and a telescopic plate is movably connected to the connecting box, and one end of the telescopic plate is fixedly connected to a lifting seat.

[0012] As a further solution of the present invention, the lubrication and cooling mechanism also includes a third connecting shaft and a drive ring for driving the oil transfer rod to rotate and discharge the lubricating oil. The drive ring is fixedly mounted on one side of the rotor, and the third connecting shaft is rotatably mounted inside the mounting shell through a first fixed bracket. The second gear and the third gear are fixedly connected to the third connecting shaft, and a plurality of teeth meshing with the third gear are arranged in the drive ring. The third connecting shaft is rotatably connected to the oil transfer rod through a synchronous belt.

[0013] As a further solution of the present invention, the lubrication and cooling mechanism also includes an oil storage tank for storing lubricating oil, the oil storage tank is arranged and installed on the motor sleeve, an oil filling pipe is arranged on the oil storage tank, and a valve is arranged on the oil filling pipe, a plurality of oil guide holes are provided at the joint between the oil storage tank and the motor sleeve, and an oil outlet is provided on the motor sleeve.

[0014] As a further solution of the present invention, the circulating cooling mechanism also includes a piston plate for circulating pumping in the conveying cylinder, the piston plate is slidably connected to the inside of the conveying cylinder through a piston rod, a heat conduction plate is provided on the conveying cylinder, a refrigeration plate is provided on one side of the heat conduction plate, the conveying cylinder is connected to a cooling water pipe through a first connecting pipe and a second connecting pipe, a first one-way valve is provided on the first connecting pipe, and a second one-way valve is provided on the second connecting pipe.

[0015] As a further solution of the present invention, the circulating cooling mechanism also includes an eccentric wheel for driving the piston plate to move back and forth. The eccentric wheel is rotatably mounted on the mounting shell through a first connecting shaft. One end of the piston rod is fixedly connected to a pressing plate, and a spring is provided at the connection between the pressing plate and the conveying cylinder.

[0016] As a further solution of the present invention, the circulating cooling mechanism also includes an exhaust fan blade and a blowing fan blade for diverting and cooling, the blowing fan blade is fixedly connected to the motor shaft, the exhaust fan blade is fixedly connected to one end of the fourth connecting shaft, the fourth connecting shaft is rotatably installed inside the mounting shell through a second fixed bracket, the other end of the fourth connecting shaft is fixedly connected to a fourth gear, and the fourth gear is adapted to be meshed and connected with teeth on the drive ring.

[0017] As a further solution of the present invention, the temperature control drive mechanism also includes a second connecting shaft for driving the first connecting shaft to dock and rotate, the second connecting shaft is rotatably connected to the lifting seat, one end of the second connecting shaft is fixedly connected to a limiting plate, one end of the first connecting shaft is provided with a movable groove adapted to be slidably connected to the limiting plate, the other end of the second connecting shaft is fixedly connected to a first gear, and the first gear is adapted to be meshed and connected to the second gear.

[0018] As a further solution of the present invention, the temperature control drive mechanism also includes a guide rod and a tension spring for driving the elastic reset of the first gear. One end of the guide rod is fixedly connected to the lifting seat, and the guide rod is limitedly slidably connected to the interior of the guide cylinder. A tension spring is provided at the internal connection between the guide rod and the guide cylinder, and the guide cylinder is fixedly connected to the connecting box.

[0019] As a further solution of the present invention, a protective cover is detachably mounted on the outer side of the motor body, a first vent is provided on the protective cover, and mounting feet for mounting support are provided at the bottom of the motor body.

[0020] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0021] The lubrication and cooling mechanism provided in the present invention can not only realize the heat dissipation treatment by blowing, that is, through the design method of directly connecting the fan blades to the motor shaft, not only the overall structure of the motor is simplified, but also the additional transmission components and installation space are reduced. This compact design is not only conducive to saving material costs, but also helps to improve the integration and flexibility of the motor, and can also realize lubrication treatment of the rotation of the motor shaft. This method can not only reduce friction and wear, but also can take away part of the heat through the flow of lubricating oil, thereby achieving good cooling treatment of the motor shaft.

[0022] By setting up a circulating cooling mechanism, the coolant can be continuously cooled and transported to the inside of the cooling chamber, so as to better realize the cooling treatment of the motor shaft and the motor body. The coolant circulates continuously inside the motor shaft, and can quickly absorb and take away the heat generated by the motor body during operation. This efficient heat exchange process can make the motor body always run at a lower temperature, effectively prevent the occurrence of overheating, realize the cooling protection of the motor body operation, and facilitate to ensure the safety of personnel and equipment.

[0023] The temperature control drive mechanism can be set up to drive the circulating cooling mechanism to operate accordingly, and the cooling process can be performed without human intervention. This design realizes intelligent temperature control during the operation of the motor body. That is, when the internal temperature of the motor body reaches the preset safety threshold, the temperature control drive mechanism can automatically trigger the cooling mechanism, and the motor can be effectively prevented from overheating without human intervention, thereby protecting the motor from high temperature damage and extending its service life.

[0024] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the invention.

[0027] Figure 3 It is a schematic diagram of the structure inside the installation shell in an embodiment of the invention.

[0028] Figure 4 It is a schematic diagram of the side view structure of the internal connection of the installation shell in an embodiment of the invention.

[0029] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A.

[0030] Figure 6 It is a schematic diagram of the front view structure of the stator connection in an embodiment of the invention.

[0031] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of B.

[0032] Figure 8 for Figure 6 Schematic diagram of the enlarged structure of C in the figure.

[0033] Fig. 9 It is a schematic diagram of the structure of the oil transfer rod in the embodiment of the invention.

[0034] Fig.10It is a schematic diagram of the cross-sectional structure of the connection of the conveying cylinder in the embodiment of the invention.

[0035] Fig.11 for Fig.10 Schematic diagram of the enlarged structure of D in the figure.

[0036] Fig.12 It is a schematic diagram of the structure of the motor shaft end connection in an embodiment of the invention.

[0037] Fig.13 It is a schematic diagram of the exploded structure of the drive ring connection in the embodiment of the invention.

[0038] Fig.14 It is a side view schematic diagram of the driving ring connected to the explosion structure in the embodiment of the invention.

[0039] Figure numerals: 1, motor body; 2, protective cover; 3, first vent; 4, mounting foot; 5, motor shaft; 6, fan blades; 7, rotor; 8, stator; 9, mounting shell; 10, second vent; 11, eccentric wheel; 12, pressing plate; 13, conveying cylinder; 14, piston rod; 15, spring; 16, piston plate; 17, first connecting pipe; 18, second connecting pipe; 19, cooling water pipe; 20, first one-way valve; 21, second one-way valve; 22, first connecting shaft; 23, moving groove; 24, limit plate; 25, second connecting shaft; 26, lifting seat; 27, first gear; 28, second Second gear; 29, third connecting shaft; 30, third gear; 31, synchronous belt; 32, oil transfer rod; 33, oil transfer groove; 34, motor shaft sleeve; 35, oil outlet; 36, oil storage tank; 37, oil guide hole; 38, oil filling pipe; 39, drive ring; 40, teeth; 41, first fixed bracket; 42, second fixed bracket; 43, fourth gear; 44, fourth connecting shaft; 45, exhaust fan blade; 46, guide rod; 47, guide cylinder; 48, tension spring; 49, telescopic plate; 50, connecting box; 51, thermal expansion block; 52, rotating connecting seat; 53, cooling chamber; 54, heat transfer plate; 55, refrigeration plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0042] Example 1: See Figures 1 to 9, a permanent magnet synchronous motor intelligent temperature control structure, installed in a motor body 1, the motor body 1 is provided with a motor shaft 5, including a mounting shell 9, the mounting shell 9 is installed inside the motor body 1, the mounting shell 9 is provided with a second ventilating port 10 for ventilation, a cooling chamber 53 for containing coolant is provided in the motor shaft 5, a rotor 7 is fixedly connected to the motor shaft 5, a stator 8 is provided outside the rotor 7, and the stator 8 is fixedly installed inside the mounting shell 9, and also includes:

[0043] The lubrication and cooling mechanism is installed on the outside of the motor shaft 5 and is used for lubricating and cooling the motor shaft 5. The lubrication and cooling mechanism includes a motor shaft sleeve 34 wrapped around the outside of the motor shaft 5. An oil transfer rod 32 for discharging lubricating oil is provided at the connection between the motor shaft sleeve 34 and the motor shaft 5. A plurality of oil transfer grooves 33 are provided on the oil transfer rod 32.

[0044] Furthermore, the lubrication and cooling mechanism also includes a third connecting shaft 29 and a drive ring 39 for driving the oil transfer rod 32 to rotate and discharge lubricating oil. The drive ring 39 is fixedly mounted on one side of the rotor 7. The third connecting shaft 29 is rotatably mounted inside the mounting shell 9 through a first fixed bracket 41. The second gear 28 and the third gear 30 are fixedly connected to the third connecting shaft 29. A plurality of teeth 40 meshingly connected to the third gear 30 are arranged in the drive ring 39. The third connecting shaft 29 is rotatably connected to the oil transfer rod 32 through a synchronous belt 31.

[0045] Furthermore, the lubrication and cooling mechanism also includes an oil storage tank 36 for storing lubricating oil. The oil storage tank 36 is arranged and installed on the motor sleeve 34. An oil filling pipe 38 is arranged on the oil storage tank 36, and a valve is arranged on the oil filling pipe 38. A plurality of oil guide holes 37 are provided at the joint between the oil storage tank 36 and the motor sleeve 34, and an oil outlet 35 is provided on the motor sleeve 34.

[0046] Furthermore, a protective cover 2 is detachably mounted on the outer side of the motor body 1 , a first vent 3 is arranged on the protective cover 2 , and mounting feet 4 for mounting support are arranged at the bottom of the motor body 1 .

[0047] Preferably, the motor body 1 can perform preliminary heat dissipation treatment through the external heat sink and the first vent 3 opened on the protective cover 2, and the mounting shell 9 is provided with a corresponding second vent 10 for heat dissipation. Under the action of the stator 8, the rotor 7 drives the motor shaft 5 to rotate accordingly, and when the motor shaft 5 rotates, it drives the blowing fan blades 6 to rotate accordingly, thereby realizing the blowing treatment in the motor body 1. In addition, the rotor 7 drives the driving ring 39 to rotate accordingly, thereby driving the fourth connecting shaft 44 on the fourth gear 43 to rotate accordingly under the action of a plurality of teeth 40 arranged in the driving ring 39, so that the fourth connecting shaft 44 drives the exhaust fan blades 45 to rotate to realize the exhaust treatment in the motor body 1, thereby forming an air diversion in the motor body 1, which is convenient for discharging the hot air in the motor body 1 and realizing good cooling treatment of the motor body 1. This design method of directly connecting the fan blades to the motor shaft 5 not only simplifies the overall structure of the motor, but also reduces additional transmission components and installation space. This compact design is not only conducive to saving material costs, but also helps to improve the integration and flexibility of the motor.

[0048] In addition, when the driving ring 39 rotates, the third gear 30 is driven to rotate accordingly, so that the third gear 30 drives the third connecting shaft 29 to rotate. The third connecting shaft 29 drives the oil transfer rod 32 to rotate under the synchronous driving action of the synchronous belt 31. Since the oil transfer rod 32 is provided with an oil transfer groove 33, when the oil transfer rod 32 rotates to the position where the oil transfer groove 33 and the oil guide hole 37 are connected, the lubricating oil in the oil storage tank 36 can enter the oil transfer groove 33 through the oil guide hole 37. Therefore, the oil transfer rod 32 rotates again to guide the lubricating oil in the oil transfer groove 33 to the oil outlet 35 for discharge, thereby achieving lubrication of the motor shaft 5. When the oil transfer groove 33 on the oil transfer rod 32 does not rotate to the oil guide hole 37 accordingly, the oil guide hole 37 is sealed to avoid leakage of the lubricating oil. This intermittent oil discharge method can well achieve lubrication of the rotation of the motor shaft 5, which can not only reduce friction and wear, but also take away part of the heat through the flow of the lubricating oil, thereby achieving good cooling of the motor shaft 5.

[0049] It should be noted that the number of the oil transfer grooves 33 provided on the oil transfer rod 32 can be between 1 and 3, and the third connecting shaft 29 and the oil transfer rod 32 are both provided with pulleys synchronously connected to the synchronous belt 31 .

[0050] Example 2: Figure 1 to Figure 14As shown, based on Example 1, this embodiment further includes a circulating cooling mechanism, which is installed at the end docking point of the motor shaft 5 and is used to circulate and extract the coolant in the motor shaft 5 for cooling treatment. The circulating cooling mechanism includes a conveying cylinder 13 and a rotating connecting seat 52 for circulating and extracting the coolant. One end of the motor shaft 5 is rotatably connected to the rotating connecting seat 52, and the rotating connecting seat 52 is fixedly installed on the mounting shell 9. The rotating connecting seat 52 is connected to the cooling cavity 53 in the motor shaft 5 through the cooling water pipe 19.

[0051] Furthermore, the circulating cooling mechanism also includes a piston plate 16 for circulating pumping in the conveying cylinder 13. The piston plate 16 is slidably connected to the inside of the conveying cylinder 13 through the piston rod 14. A heat conduction plate 54 is provided on the conveying cylinder 13. A refrigeration plate 55 is provided on one side of the heat conduction plate 54. The conveying cylinder 13 is connected to a cooling water pipe 19 through a first connecting pipe 17 and a second connecting pipe 18. A first one-way valve 20 is provided on the first connecting pipe 17, and a second one-way valve 21 is provided on the second connecting pipe 18.

[0052] Furthermore, the circulating cooling mechanism also includes an eccentric wheel 11 for driving the piston plate 16 to move back and forth. The eccentric wheel 11 is rotatably mounted on the mounting shell 9 through a first connecting shaft 22. One end of the piston rod 14 is fixedly connected to a pressing plate 12. A spring 15 is provided at the connection between the pressing plate 12 and the conveying cylinder 13.

[0053] Furthermore, the circulating cooling mechanism also includes an exhaust fan blade 45 and a blowing fan blade 6 for diverting cooling. The blowing fan blade 6 is fixedly connected to the motor shaft 5, and the exhaust fan blade 45 is fixedly connected to one end of the fourth connecting shaft 44. The fourth connecting shaft 44 is rotatably mounted inside the mounting shell 9 through the second fixed bracket 42. The other end of the fourth connecting shaft 44 is fixedly connected to a fourth gear 43, and the fourth gear 43 is adapted to be meshed and connected to the teeth 40 on the drive ring 39.

[0054] Preferably, in the present embodiment, a cooling chamber 53 is provided inside the motor shaft 5 for facilitating the flow of coolant. When further cooling treatment is required, the temperature control drive mechanism drives the eccentric wheel 11 on the first connecting shaft 22 to rotate. Under the eccentricity of the eccentric wheel 11 and the elastic return action of the spring 15, the piston plate 16 can be driven to reciprocate inside the conveying cylinder 13. Therefore, under the action of the first one-way valve 20 provided on the first connecting tube 17 and the second one-way valve 21 provided on the second connecting tube 18, the first connecting tube 17 can extract the coolant in the cooling chamber 53 and the second connecting tube 18 can transport the liquid into the cooling chamber 53, thereby realizing the continuous circulation treatment of the coolant in the cooling chamber 53, and further realizing the cooling treatment of the motor shaft 5.

[0055] And whenever the coolant is transported to the inside of the conveying cylinder 13, due to the refrigeration setting of the refrigeration plate 55 and the heat conduction setting of the heat conduction plate 54, the cooling and temperature reduction treatment of the coolant can be well achieved, so that the cooled coolant can be continuously transported to the inside of the cooling chamber 53, and the cooling treatment of the motor shaft 5 and the motor body 1 can be better achieved. This coolant continuously circulates inside the motor shaft 5, and can quickly absorb and take away the heat generated by the motor body 1 during operation. This efficient heat exchange process can make the motor body 1 always operate at a lower temperature, effectively prevent the occurrence of overheating, and realize cooling protection for the operation of the motor body 1, which is convenient for ensuring the safety of personnel and equipment.

[0056] Example 3: Figure 1 to Figure 14 As shown, based on the above embodiments, this embodiment further includes a temperature control drive mechanism, which is installed inside the mounting shell 9 and is used to drive the circulating cooling mechanism to connect with the lubrication cooling mechanism to form a drive. The temperature control drive mechanism includes a thermal expansion block 51 for temperature control drive. The thermal expansion block 51 is arranged and installed inside the connecting box 50, and the connecting box 50 is movably connected with a telescopic plate 49, and one end of the telescopic plate 49 is fixedly connected with a lifting seat 26.

[0057] Furthermore, the temperature control drive mechanism also includes a second connecting shaft 25 for driving the first connecting shaft 22 to dock and rotate. The second connecting shaft 25 is rotatably connected to the lifting seat 26. One end of the second connecting shaft 25 is fixedly connected to the limiting plate 24. One end of the first connecting shaft 22 is provided with a movable groove 23 adapted to be slidably connected to the limiting plate 24. The other end of the second connecting shaft 25 is fixedly connected to the first gear 27, and the first gear 27 is adapted to be meshed and connected to the second gear 28.

[0058] Furthermore, the temperature control drive mechanism also includes a guide rod 46 and a tension spring 48 for driving the elastic reset of the first gear 27. One end of the guide rod 46 is fixedly connected to the lifting seat 26, and the guide rod 46 is limitedly slidably connected to the inside of the guide cylinder 47. A tension spring 48 is provided at the internal connection between the guide rod 46 and the guide cylinder 47, and the guide cylinder 47 is fixedly connected to the connecting box 50.

[0059] Preferably, in the present embodiment, in the initial state when the motor body 1 just starts to operate, due to the elastic traction setting of the tension spring 48, the first gear 27 on the lifting seat 26 is not in a position where it is meshed and connected with the second gear 28. When the temperature inside the motor body 1 is too high, the heat expansion block 51 in the connection box 50 expands due to the heat, thereby pushing the telescopic plate 49 to drive the first gear 27 on the lifting seat 26 to move downward, so that the first gear 27 can be in a position where it is meshed and connected with the second gear 28. When the lifting seat 26 moves downward accordingly, the limit plate 24 on the second connecting shaft 25 can be driven to move into the moving groove 23 on the first connecting shaft 22. When the first gear 27 is meshed with the second gear 28, the limit plate 24 is just clamped at the lowest position in the moving groove 23. Figure 5 and Figure 6 As shown, and since the first connecting shaft 22 is rotatably arranged on the mounting shell 9, the first connecting shaft 22 can be driven to rotate accordingly, thereby realizing the driving of the circulating cooling mechanism, and the cooling treatment can be performed without human intervention. This design realizes the intelligent temperature control during the operation of the motor body 1, that is, when the internal temperature of the motor body 1 reaches a preset safety threshold, the cooling mechanism can be automatically triggered by the temperature control drive mechanism, and the motor can be effectively prevented from overheating without human intervention, thereby protecting the motor from high temperature damage and extending its service life.

[0060] It should be particularly noted that the components in this application are all universal standard parts or components well known to those skilled in the art, which effectively solve the technical problems raised in the background technology.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent temperature control structure for a permanent magnet synchronous motor, installed in a motor body (1), wherein a motor shaft (5) is arranged on the motor body (1), characterized in that: The invention comprises a mounting shell (9), the mounting shell (9) being mounted inside a motor body (1), the mounting shell (9) being provided with a second ventilation opening (10) for ventilation, the motor shaft (5) being provided with a cooling chamber (53) for containing a cooling liquid, the motor shaft (5) being fixedly connected with a rotor (7), the outer side of the rotor (7) being provided with a stator (8), and the stator (8) being fixedly mounted inside the mounting shell (9), and further comprising: A lubricating and cooling mechanism, which is mounted on the outside of the motor shaft (5) and is used to lubricate and cool the motor shaft (5), the lubricating and cooling mechanism comprising a motor shaft sleeve (34) wrapped around the outside of the motor shaft (5), an oil transfer rod (32) for discharging lubricating oil being provided at the connection between the motor shaft sleeve (34) and the motor shaft (5), and a plurality of oil transfer grooves (33) being provided on the oil transfer rod (32); A circulating cooling mechanism, which is mounted at the end joint of the motor shaft (5) and is used for circulating and extracting cooling liquid in the motor shaft (5) for cooling treatment, the circulating cooling mechanism comprising a delivery cylinder (13) for circulating and extracting cooling liquid and a rotating connection seat (52), one end of the motor shaft (5) is rotatably connected to the rotating connection seat (52), the rotating connection seat (52) is fixedly mounted on the mounting shell (9), and the rotating connection seat (52) is connected to the cooling cavity (53) in the motor shaft (5) through a cooling water pipe (19); A temperature control drive mechanism is installed inside the mounting shell (9) and is used to drive the circulating cooling mechanism to dock with the lubricating cooling mechanism to form a drive. The temperature control drive mechanism includes a thermal expansion block (51) used for temperature control drive. The thermal expansion block (51) is arranged and installed inside the connection box (50). The connection box (50) is movably connected to a telescopic plate (49), and one end of the telescopic plate (49) is fixedly connected to a lifting seat (26).

2. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 1 is characterized in that: The lubrication and cooling mechanism further comprises a third connecting shaft (29) and a driving ring (39) for driving an oil transfer rod (32) to rotate and discharge lubricating oil. The driving ring (39) is fixedly mounted on one side of the rotor (7). The third connecting shaft (29) is rotatably mounted inside the mounting shell (9) via a first fixed bracket (41). The third connecting shaft (29) is fixedly connected to a second gear (28) and a third gear (30). The driving ring (39) is provided with a plurality of teeth (40) meshingly connected to the third gear (30). The third connecting shaft (29) is rotatably connected to the oil transfer rod (32) via a synchronous belt (31).

3. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 2 is characterized in that: The lubricating and cooling mechanism further comprises an oil storage tank (36) for storing lubricating oil. The oil storage tank (36) is mounted on the motor shaft sleeve (34). An oil filling pipe (38) is provided on the oil storage tank (36), and a valve is provided on the oil filling pipe (38). A plurality of oil guide holes (37) are provided at the joint between the oil storage tank (36) and the motor shaft sleeve (34), and an oil outlet (35) is provided on the motor shaft sleeve (34).

4. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 1 is characterized in that: The circulating cooling mechanism also includes a piston plate (16) for circulating pumping in the conveying cylinder (13); the piston plate (16) is slidably connected to the inside of the conveying cylinder (13) through a piston rod (14); a heat conducting plate (54) is provided on the conveying cylinder (13); a refrigeration plate (55) is provided on one side of the heat conducting plate (54); the conveying cylinder (13) is connected to a cooling water pipe (19) through a first connecting pipe (17) and a second connecting pipe (18); a first one-way valve (20) is provided on the first connecting pipe (17); and a second one-way valve (21) is provided on the second connecting pipe (18).

5. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 4 is characterized in that: The circulating cooling mechanism further comprises an eccentric wheel (11) for driving the piston plate (16) to move back and forth, the eccentric wheel (11) being rotatably mounted on the mounting shell (9) via a first connecting shaft (22), one end of the piston rod (14) being fixedly connected to a pressing plate (12), and a spring (15) being provided at the connection between the pressing plate (12) and the conveying cylinder (13).

6. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 5 is characterized in that: The circulating cooling mechanism further comprises an exhaust fan blade (45) and a blowing fan blade (6) for guiding cooling, wherein the blowing fan blade (6) is fixedly connected to the motor shaft (5), and the exhaust fan blade (45) is fixedly connected to one end of a fourth connecting shaft (44), wherein the fourth connecting shaft (44) is rotatably mounted inside the mounting shell (9) via a second fixing bracket (42), and the other end of the fourth connecting shaft (44) is fixedly connected to a fourth gear (43), and the fourth gear (43) is adapted to be meshedly connected to teeth (40) on the drive ring (39).

7. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 6, characterized in that: The temperature control drive mechanism further comprises a second connecting shaft (25) for driving the first connecting shaft (22) to rotate in a docking relationship; the second connecting shaft (25) is rotatably connected to the lifting seat (26); one end of the second connecting shaft (25) is fixedly connected to the limit plate (24); one end of the first connecting shaft (22) is provided with a moving groove (23) adapted to be slidably connected to the limit plate (24); the other end of the second connecting shaft (25) is fixedly connected to the first gear (27); the first gear (27) is adapted to be meshedly connected to the second gear (28).

8. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 7 is characterized in that: The temperature control drive mechanism further comprises a guide rod (46) and a tension spring (48) for driving the first gear (27) to elastically return to its original position; one end of the guide rod (46) is fixedly connected to the lifting seat (26), and the guide rod (46) is limitedly slidably connected to the inside of the guide cylinder (47); a tension spring (48) is provided at the internal connection between the guide rod (46) and the guide cylinder (47); and the guide cylinder (47) is fixedly connected to the connection box (50).

9. The intelligent temperature control structure of a permanent magnet synchronous motor according to claim 1, characterized in that: A protective cover (2) is detachably mounted on the outside of the motor body (1), a first vent (3) is provided on the protective cover (2), and mounting feet (4) for mounting support are provided at the bottom of the motor body (1).

Images