High-power motor with high heat dissipation efficiency

Abstract

The invention relates to the technical field of motors, and particularly discloses an efficient heat dissipation high-power motor, which comprises a casing, and a rotor assembly, a stator assembly and a rotating shaft which are arranged in the casing, and is characterized in that the stator assembly comprises a stator iron core for conducting magnetic flux and a stator winding which is wound on the stator iron core and is used for generating a magnetic field; the rotor assembly is rotationally matched with the stator assembly through the rotating shaft; the high-power motor further comprises a heat dissipation mechanism, and the heat dissipation mechanism is used for conveying refrigerating fluid to exchange heat with the stator iron core. The rotor assembly comprises a rotor seat and a magnet arranged on the rotor seat, the rotor seat is arranged on the rotating shaft in a sleeving mode, a heat dissipation air channel communicated with the outside of the machine shell is arranged in the rotor seat, and the heat dissipation air channel is used for heat dissipation of the rotor assembly. According to the invention, the heat dissipation mechanism is arranged to dissipate heat of the stator assembly, and air cooling heat dissipation is carried out on the interior of the rotor assembly through the heat dissipation air duct, so that rapid transfer and dissipation of heat are realized, and the operation stability of the motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular discloses a high-power motor with high-efficiency heat dissipation. Background Art

[0002] With the rapid development of industrial automation and high-power equipment, high-power motors, as core power devices, are widely used in various high-efficiency and high-load fields, such as electricity, mining, metallurgy, ships, and rail transportation. High-power motors generate a lot of heat during operation, especially under high load conditions. Excessive temperature will not only lead to a decrease in motor efficiency, but may also cause damage or premature aging of the motor, seriously affecting the stability and service life of the equipment. Therefore, how to efficiently dissipate heat and keep the motor temperature stable is the key to improving motor performance and extending its service life.

[0003] Existing motor cooling technologies mostly use tail air cooling. The cooling efficiency of air cooling technology is low, especially when the motor is working continuously, the cooling effect is not ideal. During the operation of the motor, the internal heat decreases radially outward, resulting in the heat at the motor axis being much higher than the edge. The motor's liquid cooling system is usually installed near the stator for heat dissipation, and the heat dissipation effect at the center of the motor is poor, causing the aging efficiency of the structure at the center of the motor to be much higher than that at the edge, thereby affecting the life of the motor. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, an object of the present invention is to provide a high-power motor that achieves synchronous and efficient heat dissipation of the motor through air cooling and water cooling.

[0005] To achieve the above-mentioned purpose, the present invention provides a high-power motor with high efficiency in heat dissipation, including a housing and a rotor assembly, a stator assembly and a rotating shaft arranged in the housing, wherein the stator assembly includes a stator core for conducting magnetic flux and a stator winding wound on the stator core for generating a magnetic field, and the rotor assembly rotates with the stator assembly via the rotating shaft; the high-power motor also includes a heat dissipation mechanism, which is used to transport a refrigerant fluid to exchange heat with the stator core; the rotor assembly includes a rotor seat, a magnet arranged on the rotor seat, the rotor seat sleeve is arranged on the rotating shaft, and a heat dissipation duct connected to the outside of the housing is arranged in the rotor seat, and the heat dissipation duct is used for heat dissipation of the rotor assembly. The present invention dissipates heat from the stator assembly by arranging a heat dissipation mechanism, and realizes air cooling and heat dissipation of the inside of the rotor assembly through the heat dissipation duct, thereby realizing rapid transfer and dissipation of heat and improving the running stability of the motor.

[0006] Furthermore, the heat dissipation mechanism includes a liquid storage component, a conveying component and a circulation component. The conveying component runs through the stator core and exchanges heat with the stator core. The stator core is made of heat-conducting material. The liquid storage component and the conveying component are connected via the circulation component to form a circulation loop. The circulation component is used to drive the coolant in the liquid storage component to exchange heat with the stator core via the conveying component. The liquid has a high specific heat capacity and can carry more heat in a smaller volume. The liquid cooling system can absorb and transfer heat faster, and is particularly suitable for high-power, high-load equipment. The noise generated during operation is small, because liquid cooling does not rely on high-speed fans, and is suitable for application scenarios that require noise. The circulation of the coolant is achieved through the circulation component, which can maintain a stable heat dissipation effect when the motor is working, avoid local overheating, and complete the self-circulation of the coolant through the liquid storage component. No external equipment is required, reducing production costs.

[0007] Furthermore, the heat dissipation mechanism includes a conveying component and an air pump component, the conveying component runs through the stator core and exchanges heat with the stator core, the stator core is made of heat-conducting material, the conveying component is connected to the air pump component, and the air pump component is used to drive the airflow to exchange heat with the stator core through the conveying component. Air cooling is suitable for medium and low power applications, and has the advantages of low cost, simple structure, easy installation, and easy maintenance. It is suitable for more common equipment. Since air is a common and easily available medium, the air cooling system has strong adaptability and compatibility and is suitable for use under various environmental conditions.

[0008] Furthermore, the stator core is a plurality of stacked silicon steel sheets, and a heat dissipation hole penetrating the stator core is provided on the end surface of the stator core. The conveying assembly includes a heat dissipation pipe, a first tube body and a second tube body connected to the heat dissipation pipe, the heat dissipation pipe penetrates the heat dissipation hole, the first tube body is connected to the liquid storage assembly via the circulation assembly, and the second tube body is connected to the liquid storage assembly. By adopting the design of multiple heat dissipation holes and heat dissipation pipes, the heat dissipation efficiency of the stator core is enhanced, the temperature rise during motor operation is reduced, and the service life of the motor is extended. The penetrating design of the heat dissipation hole provides a larger cooling area, ensuring that the motor can effectively dissipate heat when operating at high power.

[0009] Furthermore, the heat dissipation holes are provided in a plurality of groups, and the plurality of heat dissipation holes are distributed in a circumferential array around the central axis of the stator core. The heat dissipation holes are distributed in a circumferential array on the end surface of the stator core to ensure that the heat dissipation holes are evenly distributed around the entire stator core. This arrangement of the heat dissipation holes improves the uniformity and effectiveness of the coolant circulation, avoids the phenomenon of local overheating, and ensures that the motor can operate stably under different working conditions.

[0010] Furthermore, the heat dissipation pipe is a hose, and the heat dissipation pipe is S-shaped and passes through multiple groups of heat dissipation holes in sequence. The hose is a metal hose with good thermal conductivity. The metal hose has good flexibility and high temperature resistance, can adapt to the deformation and vibration of the motor when it is working, and ensures that the coolant can flow smoothly, which can ensure long-term use without damage, thereby improving the heat dissipation effect and system stability.

[0011] Furthermore, the circulation component includes a sealing cylinder fixedly connected to the casing, a sealing piston adapted to the sealing cylinder, a connecting rod, a rotating disk and a transmission member, the sealing cylinder is slidably connected to the sealing piston, the bottom of the sealing cylinder is connected to the first tube body, one end of the connecting rod is connected to the end of the sealing piston away from the sealing cylinder, the other end of the connecting rod is connected to the rotating disk, and the rotating disk is connected to the rotating shaft through the transmission member; the rotation of the rotating shaft drives the sealing piston to reciprocate relative to the sealing cylinder via the transmission member. The circulation component effectively improves the flow efficiency of the coolant, ensures that the coolant can continue to flow inside the entire motor, thereby achieving more efficient heat dissipation, and drives the circulation of the coolant through a mechanical transmission device, making the heat dissipation system more stable and reliable. The rotating disk is connected to the rotating shaft, and the faster the rotating shaft rotates, the faster the circulation component pumps the coolant, so that when the motor runs at high speed, the heat dissipation speed can also be increased accordingly, thereby preventing the motor from overheating and improving the stability of the motor when running at high speed.

[0012] Furthermore, the rotor seat includes a base, a first fan and a cover plate which are sequentially mounted on the rotating shaft, and the base, the first fan and the cover plate cooperate to form a heat dissipation duct; the rotation of the rotating shaft drives the first fan to rotate, and the rotating first fan drives the air flow in the heat dissipation duct, thereby taking away the heat of the rotor seat. The air cooling design and the liquid cooling system complement each other, increasing the heat dissipation capacity of the rotor assembly. When operating at high power, the air cooling system can effectively help dissipate heat to prevent the rotor assembly from being overheated and causing the magnetism of the permanent magnet to weaken.

[0013] Furthermore, the interior of the rotating shaft is hollow, and an exhaust hole, a return hole, a delivery hole, and an air inlet hole are sequentially arranged on the rotating shaft along the central axis direction. The interior of the rotating shaft is connected to the heat dissipation duct via the delivery hole and the return hole. A partition is arranged inside the rotating shaft to isolate the internal space, and the partition is located between the delivery hole and the return hole. The airflow enters the interior of the rotating shaft via the air inlet hole, enters the heat dissipation duct via the delivery hole, and then flows into the interior of the rotating shaft again via the return hole, and finally is discharged from the exhaust hole. The airflow design inside the rotating shaft improves the air flow inside the rotating shaft by circulating flow, reduces the heat accumulation inside the rotating shaft, ensures that the rotating shaft can dissipate heat efficiently, and further improves the heat dissipation capacity of the motor.

[0014] Furthermore, the housing includes an inner wall, an outer wall and a guide plate, the outer wall is arranged around the inner wall, the guide plate extends from the inner wall to the outer wall, and the inner wall, the outer wall and the guide plate cooperate to form an annular channel. The annular channel can effectively guide the airflow, so that the heat dissipation performance of the housing is improved, and the heat inside the motor can be taken away to the maximum extent, thereby improving the heat dissipation efficiency of the motor.

[0015] Furthermore, a second fan is provided on the rotating shaft, and the second fan is an axial impeller, and the second fan includes a hub and a plurality of blades connected to the hub. The design of the second fan can further enhance the air circulation inside the motor and improve the heat dissipation efficiency. When the motor is running at high load, the second fan can quickly take away the heat inside the motor and reduce the temperature, thereby improving the stability and performance of the motor.

[0016] Beneficial effects of the present invention: The present invention dissipates heat from the stator assembly by arranging a heat dissipation mechanism, and realizes air cooling and heat dissipation inside the rotor assembly through the heat dissipation air duct, thereby realizing rapid transfer and dissipation of heat and improving the running stability of the motor; The design of multiple heat dissipation holes and heat dissipation pipes enhances the heat dissipation efficiency of the stator core, reduces the temperature rise during motor operation, and prolongs the service life of the motor. The through-hole design of the heat dissipation holes provides a larger cooling area, ensuring that the motor can effectively dissipate heat when running at high power. The circulation component effectively improves the flow efficiency of the coolant, ensuring that the coolant can continue to flow throughout the motor, thereby achieving more efficient heat dissipation. The circulation of the coolant is driven by a mechanical transmission device, making the heat dissipation system more stable and reliable. The rotating disk is connected to the shaft. The faster the shaft rotates, the faster the circulation component pumps the coolant. When the motor runs at high speed, the heat dissipation speed can also be increased accordingly, thereby preventing the motor from overheating and improving the stability of the motor when running at high speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of a high-power motor with high-efficiency heat dissipation of the present invention; Figure 2 A cross-sectional schematic diagram of a high-power motor with high heat dissipation efficiency according to the present invention; Figure 3 It is a structural schematic diagram of a high-power motor with high-efficiency heat dissipation of the present invention; Figure 4 It is a cross-sectional schematic diagram of the rotor seat and the rotating shaft of the present invention; Figure 5 It is a structural schematic diagram of the conveying assembly of the present invention; Figure 6 It is a structural schematic diagram of the stator core of the present invention; Figure 7 is a cross-sectional schematic diagram of a circulation component of the present invention; Figure 8 It is a schematic structural diagram of the casing of the present invention; Fig. 9 It is a schematic structural diagram of another implementation scheme of a high-power motor with efficient heat dissipation of the present invention.

[0018] Reference numerals include: 1. Casing; 2. Check valve; 3. Rotor assembly; 4. Stator assembly; 5. Rotating shaft; 6. Stator core; 7. Stator winding; 8. Heat dissipation mechanism; 9. Liquid storage assembly; 10. Transport assembly; 11. Circulation assembly; 12. Rotor seat; 13. Magnet; 14. Heat dissipation duct; 15. Heat dissipation hole; 16. Heat dissipation pipe; 17. First tube body; 18. Second tube body; 19. Sealing cylinder; 20. Sealing piston; 21. Connecting rod ; 22. Rotating disk; 23. Transmission member; 24. Connecting rod; 25. First connecting ear; 26. Second connecting ear; 27. Base; 28. First fan; 29. ​​Cover plate; 30. Exhaust hole; 31. Return hole; 32. Delivery hole; 33. Inlet hole; 34. Partition; 35. Inner wall; 36. Outer wall; 37. Guide plate; 38. Annular channel; 39. Second fan; 40. Air pump member; 41. Compression refrigerator. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] See also Figures 1 to 8 As shown, a high-power motor with high heat dissipation of the present invention comprises a housing 1 and a rotor assembly 3, a stator assembly 4 and a rotating shaft 5 arranged in the housing 1, the stator assembly 4 comprises a stator core 6 for conducting magnetic flux and a stator winding 7 wound on the stator core 6 for generating a magnetic field, and the rotor assembly 3 is rotatably matched with the stator assembly 4 via the rotating shaft 5; it is characterized in that: the high-power motor further comprises a heat dissipation mechanism 8, the heat dissipation mechanism 8 is used to transport a refrigerant fluid to exchange heat with the stator core 6; the rotor assembly 3 comprises a rotor seat 12, a magnet 13 arranged on the rotor seat 12, the rotor seat 12 is sleeved on the rotating shaft 5, and a heat dissipation duct 14 connected to the outside of the housing 1 is arranged in the rotor seat 12, and the heat dissipation duct 14 is used for heat dissipation of the rotor assembly 3. The present invention dissipates heat from the stator assembly 4 by arranging the heat dissipation mechanism 8, and realizes air cooling and heat dissipation inside the rotor assembly 3 through the heat dissipation duct 14, thereby realizing rapid transfer and dissipation of heat and improving the running stability of the motor.

[0021] In this embodiment, the heat dissipation mechanism 8 includes a liquid storage component 9, a conveying component 10 and a circulation component 11. The conveying component 10 passes through the stator core 6 and exchanges heat with the stator core 6. The stator core 6 is made of a heat-conducting material. The liquid storage component 9 and the conveying component 10 are connected via the circulation component 11 to form a circulation loop. The circulation component 11 is used to drive the coolant in the liquid storage component 9 to exchange heat with the stator core 6 via the conveying component 10. The liquid has a high specific heat capacity and can carry more heat in a smaller volume. The liquid cooling system can absorb and transfer heat faster, which is particularly suitable for high-power and high-load equipment, and the noise generated during operation is small, because liquid cooling does not rely on high-speed fans, which is suitable for application scenarios with requirements for noise; the circulation of the coolant is realized through the circulation component 11, which can maintain a stable heat dissipation effect when the motor is working, avoid local overheating, and complete the self-circulation of the coolant through the liquid storage component 9, without the need for external equipment, reducing production costs.

[0022] Specifically, the liquid storage component 9 is a liquid storage tank or a connection port for connecting to an external water source and a drain port connected to an external drain tank. In the present embodiment, the liquid storage component 9 is a liquid storage tank, and the liquid storage tank is provided with coolant.

[0023] Specifically, the liquid storage assembly 9 is fixedly connected with heat dissipation fins, and the heat dissipation fins quickly conduct the heat absorbed in the liquid storage assembly 9 to the surrounding environment, ensuring that the coolant in the liquid storage assembly 9 is maintained at a relatively low temperature.

[0024] Specifically, a refrigeration element is provided in the liquid storage assembly 9 , and the refrigeration element is a semiconductor refrigeration sheet, and the refrigeration element is used to reduce the temperature of the coolant in the liquid storage assembly 9 .

[0025] The stator core 6 is a plurality of stacked silicon steel sheets, and a heat dissipation hole 15 penetrating the stator core 6 is provided on the end face of the stator core 6. The conveying assembly 10 includes a heat dissipation pipe 16, a first tube body 17 and a second tube body 18 connected to the heat dissipation pipe 16. The heat dissipation pipe 16 penetrates the heat dissipation hole 15, and the first tube body 17 is connected to the liquid storage assembly 9 via the circulation assembly 11, and the second tube body 18 is connected to the liquid storage assembly 9. By adopting the design of multiple heat dissipation holes 15 and heat dissipation pipes 16, the heat dissipation efficiency of the stator core 6 is enhanced, the temperature rise during the operation of the motor is reduced, and the service life of the motor is extended. The through design of the heat dissipation hole 15 provides a larger cooling area, ensuring that the motor can effectively dissipate heat when operating at high power.

[0026] There are multiple groups of heat dissipation holes 15, and the multiple groups of heat dissipation holes 15 are distributed in a circumferential array around the central axis of the stator core 6. The heat dissipation holes 15 are distributed in a circumferential array on the end surface of the stator core 6 to ensure that the heat dissipation holes 15 are evenly distributed around the entire stator core 6. This arrangement of the heat dissipation holes 15 improves the uniformity and effectiveness of the circulation of the coolant, avoids the phenomenon of local overheating, and ensures that the motor can operate stably under different working conditions.

[0027] The heat dissipation pipe 16 is a hose, and the heat dissipation pipe 16 is S-shaped and sequentially penetrates the plurality of heat dissipation holes 15. The hose is a metal hose with good thermal conductivity, and the metal hose has good flexibility and high temperature resistance, and can adapt to the deformation and vibration of the motor when it is working, while ensuring that the coolant can flow smoothly, and can ensure long-term use without damage, thereby improving the heat dissipation effect and the stability of the system.

[0028] The circulation component 11 includes a sealing cylinder 19 fixedly connected to the casing 1, a sealing piston 20 matched with the sealing cylinder 19, a connecting rod 21, a rotating disk 22 and a transmission member 23. The sealing cylinder 19 is slidably connected to the sealing piston 20, the bottom of the sealing cylinder 19 is connected to the first tube body 17, one end of the connecting rod 21 is connected to the end of the sealing piston 20 away from the sealing cylinder 19, and the other end of the connecting rod 21 is connected to the rotating disk 22, and the rotating disk 22 is connected to the rotating shaft 5 through the transmission member 23; the rotation of the rotating shaft 5 drives the sealing piston 20 to reciprocate relative to the sealing cylinder 19 via the transmission member 23.

[0029] Specifically, the transmission member 23 is a gear fixedly connected to the rotating shaft 5, the rotating disk 22 is rotatably connected to the housing 1, and the rotating disk 22 is meshed with the gear. The circulation component 11 effectively improves the flow efficiency of the coolant, ensures that the coolant can continue to flow throughout the motor, thereby achieving more efficient heat dissipation, and drives the circulation of the coolant through a mechanical transmission device, making the heat dissipation system more stable and reliable. The rotating disk 22 is connected to the rotating shaft 5. The faster the rotation speed of the rotating shaft 5, the faster the circulation component 11 pumps the coolant, so that when the motor runs at high speed, the heat dissipation speed can also be increased accordingly, thereby preventing the motor from overheating and improving the stability of the motor when running at high speed.

[0030] Specifically, one-way valves 2 are installed on both sides of the sealing cylinder 19 in the first tube body 17, and the one-way valves 2 are used to prevent the coolant from flowing back.

[0031] The connecting rod 21 includes a connecting rod 24, a first connecting ear 25 fixedly connected to one end of the connecting rod 24, and a second connecting ear 26 fixedly connected to the other end of the connecting rod 24. The first connecting ear 25 is rotatably connected to the rotating disk 22, and the second connecting ear 26 is rotatably connected to the sealing piston 20. Through the design of the connecting ear and the connecting rod 21, it is possible to ensure that the sealing piston 20 moves smoothly and stably, reduce wear, and improve the efficiency of coolant circulation and the life of the system.

[0032] In the prior art, the rotor is sandwiched by the stator. This structure limits the direct contact area between the rotor and the air, which makes it difficult for the rotor to dissipate heat. Moreover, under high-speed conditions, since the permanent magnet 13 has a certain conductivity, eddy current losses will be generated in the alternating magnetic field. These losses will be released in the form of heat, causing the temperature of the rotor and the permanent magnet 13 to rise. When the permanent magnet 13 is in a high-temperature environment for a long time, the magnetism of the permanent magnet 13 will gradually weaken, and demagnetization will occur.

[0033] The rotor seat 12 includes a base 27, a first fan 28 and a cover plate 29 which are sequentially mounted on the rotating shaft 5. The base 27, the first fan 28 and the cover plate 29 cooperate to form a heat dissipation duct 14. The rotation of the rotating shaft 5 drives the first fan 28 to rotate, and the rotating first fan 28 drives the air flow in the heat dissipation duct 14, thereby taking away the heat of the rotor seat 12. The air cooling design and the liquid cooling system complement each other, increasing the heat dissipation capacity of the rotor assembly 3. When operating at high power, the air cooling system can effectively help dissipate heat to prevent the rotor assembly 3 from being overheated and causing the magnetism of the permanent magnet 13 to weaken.

[0034] The interior of the rotating shaft 5 is hollow, and the rotating shaft 5 is provided with an exhaust hole 30, a return hole 31, a delivery hole 32 and an air inlet hole 33 in sequence along the central axis direction. The interior of the rotating shaft 5 is connected to the heat dissipation duct 14 via the delivery hole 32 and the return hole 31. The rotating shaft 5 is provided with a partition 34 to isolate the internal space, and the partition 34 is located between the delivery hole 32 and the return hole 31; the airflow enters the interior of the rotating shaft 5 through the air inlet hole 33, enters the heat dissipation duct 14 through the delivery hole 32, and then flows into the interior of the rotating shaft 5 again through the return hole 31, and finally is discharged from the exhaust hole 30. The airflow design in the rotating shaft 5 improves the air flow inside the rotating shaft 5 by circulating flow, reduces the heat accumulation inside the rotating shaft 5, ensures that the rotating shaft 5 can dissipate heat efficiently, and further improves the heat dissipation capacity of the motor.

[0035] Specifically, the base 27 and the cover plate 29 can form a motor rotor with a hollow structure. When the motor is working, the shaft 5 rotates, and the shaft 5 drives the first fan 28 to rotate. The rotating fan generates wind pressure, forming air flow. The external air enters the shaft 5 through the air inlet 33 and enters the heat dissipation duct 14 through the delivery hole 32. Since the first fan 28 is located between the base 27 and the cover plate 29, the flowing air bypasses the first fan 28 and flows into the shaft 5 again through the return hole 31, and finally is discharged from the exhaust hole 30. Through air circulation, the contact area between the rotor and the air is increased, and efficient heat dissipation of the rotor assembly 3 is achieved, the temperature of the permanent magnet 13 is reduced, and the phenomenon that the magnetism of the magnet 13 is weakened due to the increase in the temperature of the rotor assembly 3 is avoided, and the stability of the motor operation is improved.

[0036] The housing 1 includes an inner wall 35, an outer wall 36 and a guide plate 37. The outer wall 36 is arranged around the inner wall 35. The guide plate 37 extends from the inner wall 35 to the outer wall 36. The inner wall 35, the outer wall 36 and the guide plate 37 cooperate to form an annular channel 38. The annular channel 38 can effectively guide the airflow, so that the heat dissipation performance of the housing 1 is improved, and the heat inside the motor can be taken away to the maximum extent, thereby improving the heat dissipation efficiency of the motor.

[0037] A second fan 39 is provided on the rotating shaft 5. The second fan 39 is an axial impeller. The second fan 39 includes a hub and a plurality of blades connected to the hub. The design of the second fan 39 can further enhance the air circulation inside the motor and improve the heat dissipation efficiency. When the motor is running at high load, the second fan 39 can quickly take away the heat inside the motor and reduce the temperature, thereby improving the stability and performance of the motor.

[0038] In this embodiment, when the motor is working, the stator winding 7 is energized, the stator assembly 4 generates a magnetic field and acts on the magnet 13 of the rotor assembly 3, the magnet 13 drives the rotor seat 12 to rotate, and the rotor seat 12 drives the rotating shaft 5 to rotate to achieve power output, and the rotating shaft 5 drives the first fan 28 to rotate when it rotates, and the rotation of the first fan 28 generates wind pressure to form air flow, at this time, the external air flows into the interior of the rotating shaft 5 through the air inlet 33, and then flows into the interior of the hollow rotor seat 12 through the delivery hole 32, the flowing air bypasses the first fan 28, and then flows into the interior of the rotating shaft 5 again through the reflux hole 31, and finally is discharged from the exhaust hole 30, through the circulation of air, the heat dissipation of the rotating shaft 5, the rotor seat 12 and the magnet 13 can be achieved; at the same time, the rotation of the rotating shaft 5 drives the second fan 39 to rotate, and the rotating second fan 39 forms air flow, introduces external cold air into the annular channel 38, and takes away the heat around the casing 1.

[0039] At the same time, the rotating shaft 5 drives the rotating disk 22 to rotate via the transmission member 23, and the rotation of the rotating disk 22 drives the sealing piston 20 to reciprocate relative to the sealing cylinder 19 via the connecting rod 21. The coolant in the liquid storage assembly 9 is pumped into the heat dissipation pipe 16, and the coolant exchanges heat with the stator core 6 to achieve heat dissipation of the stator assembly 4. The coolant flows back to the liquid storage assembly 9 through the second tube body 18 to complete the circulation of the coolant.

[0040] See also Fig. 9As shown, in another embodiment, the heat dissipation mechanism 8 includes a conveying assembly 10 and an air pump 40. The conveying assembly 10 runs through the stator core 6 and exchanges heat with the stator core 6. The stator core 6 is made of a heat-conducting material. The conveying assembly 10 is connected to the air pump 40. The air pump 40 is used to drive the airflow to exchange heat with the stator core 6 through the conveying assembly 10. Air cooling is suitable for medium and low power applications, and has the advantages of low cost, simple structure, easy installation, and easy maintenance. It is suitable for more common equipment. Since air is a common and easily available medium, the air cooling system has strong adaptability and compatibility and is suitable for use under various environmental conditions.

[0041] Specifically, the first tube body 17 and the second tube body 18 extend out of the casing 1 respectively, and the first tube body 17 is connected to the air pump component 40. The air pump component 40 drives the airflow to exchange heat with the stator core 6 through the heat dissipation pipe 16, and the airflow after heat exchange is discharged from the second tube body 18.

[0042] Specifically, a compression refrigerator 41 is provided between the first tube body 17 and the air pump member 40 . The compression refrigerator 41 is used to reduce the temperature of the external airflow and enhance the heat dissipation effect of the heat dissipation mechanism 8 .

[0043] Preferably, a liquid nitrogen adding port is provided between the first tube body 17 and the air pump member 40 , and the liquid nitrogen adding port is used to add liquid nitrogen into the conveying assembly 10 , thereby reducing the temperature of the airflow in the conveying assembly 10 and enhancing the heat dissipation effect of the heat dissipation mechanism 8 .

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-power motor with high heat dissipation efficiency, comprising a housing (1) and a rotor assembly (3), a stator assembly (4) and a rotating shaft (5) arranged in the housing (1); the stator assembly (4) comprising a stator core (6) for conducting magnetic flux and a stator winding (7) wound on the stator core (6) for generating a magnetic field; the rotor assembly (3) is rotatably matched with the stator assembly (4) via the rotating shaft (5); and characterized in that: The high-power motor further comprises a heat dissipation mechanism (8), the heat dissipation mechanism (8) being used to transport a cooling fluid to exchange heat with the stator core (6); the rotor assembly (3) comprising a rotor seat (12) and a magnet (13) arranged on the rotor seat (12); the rotor seat (12) being sleeved on the rotating shaft (5); a heat dissipation duct (14) being arranged in the rotor seat (12) and communicating with the outside of the housing (1); the heat dissipation duct (14) being used to dissipate heat from the rotor assembly (3).

2. A high-power motor with high heat dissipation efficiency according to claim 1, characterized in that: The heat dissipation mechanism (8) comprises a liquid storage component (9), a conveying component (10) and a circulation component (11); the conveying component (10) penetrates the stator core (6) and exchanges heat with the stator core (6); the stator core (6) is made of a heat-conducting material; the liquid storage component (9) and the conveying component (10) are connected via the circulation component (11) to form a circulation loop; the circulation component (11) is used to drive the coolant in the liquid storage component (9) to exchange heat with the stator core (6) via the conveying component (10).

3. A high-power motor with high heat dissipation efficiency according to claim 1, characterized in that: The heat dissipation mechanism (8) comprises a conveying component (10) and an air pump component (40); the conveying component (10) penetrates the stator core (6) and exchanges heat with the stator core (6); the stator core (6) is made of a heat-conducting material; the conveying component (10) is in communication with the air pump component (40); and the air pump component (40) is used to drive an airflow to exchange heat with the stator core (6) via the conveying component (10).

4. A high-power motor with high heat dissipation efficiency according to claim 2 or 3, characterized in that: The stator core (6) is a plurality of stacked silicon steel sheets. A heat dissipation hole (15) penetrating the stator core (6) is provided on an end surface of the stator core (6). The conveying assembly (10) comprises a heat dissipation pipe (16), a first tube body (17) and a second tube body (18) connected to the heat dissipation pipe (16). The heat dissipation pipe (16) penetrates the heat dissipation hole (15). The first tube body (17) is connected to the liquid storage assembly (9) via the circulation assembly (11), and the second tube body (18) is connected to the liquid storage assembly (9).

5. A high-power motor with high heat dissipation efficiency according to claim 4, characterized in that: The heat dissipation holes (15) are provided in a plurality of groups, and the plurality of groups of heat dissipation holes (15) are distributed in a circular array around the central axis of the stator core (6).

6. A high-power motor with high heat dissipation efficiency according to claim 5, characterized in that: The heat dissipation pipe (16) is a hose, and is S-shaped and passes through the multiple groups of heat dissipation holes (15) in sequence.

7. A high-power motor with high heat dissipation efficiency according to claim 2, characterized in that: The circulation assembly (11) comprises a sealing cylinder (19) fixedly connected to the housing (1), a sealing piston (20) matched with the sealing cylinder (19), a connecting rod (21), a rotating disk (22) and a transmission member (23); the sealing cylinder (19) is slidably connected to the sealing piston (20); the bottom of the sealing cylinder (19) is connected to the first tube body (17); one end of the connecting rod (21) is connected to an end of the sealing piston (20) away from the sealing cylinder (19); the other end of the connecting rod (21) is connected to the rotating disk (22); the rotating disk (22) is connected to the rotating shaft (5) via the transmission member (23); the rotating shaft (5) rotates via the transmission member (23) to drive the sealing piston (20) to reciprocate relative to the sealing cylinder (19).

8. The high-power motor with high heat dissipation efficiency according to claim 1, characterized in that: The rotor seat (12) comprises a base (27), a first fan (28) and a cover plate (29) which are sequentially sleeved on the rotating shaft (5); the base (27), the first fan (28) and the cover plate (29) cooperate to form a heat dissipation duct (14); the rotating shaft (5) rotates to drive the first fan (28) to rotate, and the rotating first fan (28) drives the air in the heat dissipation duct (14) to flow.

9. The high-power motor with high heat dissipation efficiency according to claim 1, characterized in that: The interior of the rotating shaft (5) is hollow. An exhaust hole (30), a return hole (31), a delivery hole (32) and an air inlet hole (33) are sequentially arranged on the rotating shaft (5) along the central axis direction. The interior of the rotating shaft (5) is connected to the heat dissipation duct (14) via the delivery hole (32) and the return hole (31). A partition (34) is arranged inside the rotating shaft (5) to isolate the internal space. The partition (34) is located between the delivery hole (32) and the return hole (31). The airflow enters the interior of the rotating shaft (5) via the air inlet hole (33), enters the heat dissipation duct (14) via the delivery hole (32), then flows into the interior of the rotating shaft (5) again via the return hole (31), and finally is discharged from the exhaust hole (30).

10. The high-power motor with high heat dissipation efficiency according to claim 1, characterized in that: The casing (1) comprises an inner wall (35), an outer wall (36) and a guide plate (37); the outer wall (36) is arranged around the inner wall (35); the guide plate (37) extends from the inner wall (35) to the outer wall (36); the inner wall (35), the outer wall (36) and the guide plate (37) cooperate to form an annular channel (38); a second fan (39) is provided on the rotating shaft (5); the second fan (39) is an axial impeller; the second fan (39) comprises a hub and a plurality of blades connected to the hub.

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