New energy automobile motor based on multi-phase winding and use method thereof

Abstract

The invention relates to the technical field of workpiece internal defect detection, in particular to a new energy automobile motor based on a multi-phase winding and a use method thereof.The new energy automobile motor comprises a multi-phase winding motor body, an output shaft and a mounting barrel, the middle of the multi-phase winding motor body is rotationally connected with the output shaft, and a transmission assembly is fixedly arranged on the surface of the output shaft; a liquid cooling assembly is fixedly arranged at one end of the multi-phase winding motor body, a mounting cylinder is fixedly arranged at the other end of the multi-phase winding motor body, an air cooling assembly is fixedly arranged on one side of the inner wall of the mounting cylinder, and an oil cooling assembly is fixedly arranged in the middle of the inner wall of the mounting cylinder; the magnetic field of the connecting disc transmits torque to drive the connecting disc to rotate, the connecting disc accelerates flowing of cooling liquid through a plurality of blades, a plurality of cooling pipes are used for absorbing heat emitted by the surface of the multi-phase winding motor body, and due to the fact that the output shaft and the connecting disc are in non-contact transmission, heat generated by mechanical friction is reduced. And the operation burden of the multi-phase winding motor body is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a new energy vehicle motor based on multi-phase windings and a method of using the motor. Background Art

[0002] As global energy shortages and environmental problems continue to intensify, new energy vehicles are increasingly valued for their clean and efficient use of energy. In the power systems of these new vehicles, motors are core components, and their performance plays a decisive role in the power output, energy efficiency and driving experience of the entire vehicle. Every innovation and optimization of motors makes it possible to improve the overall performance and user experience of new energy vehicles. In the core structure of new energy vehicle drive motors, the stator is a key component of electromagnetic energy conversion, and its design is directly related to the overall performance of the motor. Multi-phase windings, as direct participants in motor energy conversion, achieve precise control of the magnetic field through carefully designed phase angles and pitches. The optimization of the phase angle is like paving a smooth and unobstructed "high-speed channel" for the magnetic field, reducing the generation of harmonic magnetic fields, making the motor more stable during operation, reducing vibration and noise, and the precise calculation and adjustment of the pitch further improves the utilization rate of the winding, making the current more evenly distributed in the winding, and improving the efficiency and power density of the motor. However, in order to save space, the multi-phase winding motor will drive the fan blades to rotate through the transmission shaft to achieve heat dissipation during operation. However, this cooling method has significant limitations. Specifically, the fan blades increase the load burden of the motor due to their own rotation. As the motor continues to run, this inefficient heat dissipation mechanism gradually exposes its shortcomings and cannot fully meet the heat dissipation requirements of the core components and casing inside the motor, resulting in frequent local overheating, which in turn affects the overall performance and service life of the motor. Therefore, in order to solve the above problems, a new energy vehicle motor based on multi-phase winding and a method for using the same are proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a new energy vehicle motor based on multi-phase windings and a method of using the same, so as to solve the problem in the above background technology that heat is dissipated by driving the fan blades to rotate through a transmission shaft, and the fan blades increase the load burden of the motor due to their own rotation, which makes it difficult to fully meet the heat dissipation requirements of the core components and casing inside the motor, thereby affecting the overall performance and service life of the motor.

[0004] To achieve the above object, the present invention provides the following technical solutions: A new energy automobile motor based on multi-phase winding and a method of using the same, comprising a multi-phase winding motor body, an output shaft and a mounting cylinder, wherein the middle part of the multi-phase winding motor body is rotatably connected with the output shaft, a transmission assembly is fixedly arranged on the surface of the output shaft, one end of the multi-phase winding motor body is fixedly arranged with a liquid cooling assembly, the other end of the multi-phase winding motor body is fixedly arranged with a mounting cylinder, one side of the inner wall of the mounting cylinder is fixedly arranged with an air cooling assembly, the middle part of the inner wall of the mounting cylinder is fixedly arranged with an oil cooling assembly, the transmission assembly comprises a connecting disk, the surface of the connecting disk is provided with a There is an installation groove one, and there are several installation grooves one, a magnetic block one is arranged inside the installation groove one, the liquid cooling component includes a sealing box, a water outlet groove is opened on one side of the sealing box, and there are several water outlet grooves, a support plate is rotatably connected inside the sealing box, a blade is arranged on the surface of the support plate, and there are several blades, an installation groove two is opened on the inner wall of the support plate, and there are several installation grooves two, a magnetic block two is arranged inside the installation groove two, a cooling pipe is arranged at one end of the water outlet groove, and a liquid storage component is arranged at one end of the several cooling pipes.

[0005] As a further optimized content of the present invention, wherein: the surface of the cooling tube is fixedly connected to the multi-phase winding motor body, and the outer surface of the multi-phase winding motor body is provided with a mounting groove three matching the cooling tube.

[0006] As a further optimization of the present invention, a heat dissipation pipe is provided on one side of the surface of the sealing box, a heat dissipation fin is provided on the surface of the heat dissipation pipe, and a mounting seat is provided on the other side of the surface of the sealing box.

[0007] As further optimized content of the present invention, the liquid storage assembly includes a liquid storage tank, which is arranged at one end inside the mounting cylinder, one side of the mounting cylinder is fixedly connected to a plurality of cooling pipes, and the other side of the liquid storage tank is provided with a heat sink, and the surface of the heat sink is provided with a heat fin 2, and a plurality of heat fins 2 are provided, and a plurality of heat fins 2 are cross-arranged, and a ventilation groove is opened on the surface of the heat fin 2.

[0008] As a further optimized content of the present invention, a reflux pipe is provided between the bottom end of the sealing box and the bottom end of the liquid storage tank, and a one-way valve is provided on one side of the reflux pipe.

[0009] As further optimized content of the present invention, the air cooling component includes a fixing rod, a small motor is provided in the middle of the fixing rod through a motor seat, a transmission shaft of the small motor is provided with fan blades, and a heat dissipation hole is opened on the surface of the mounting tube, and a plurality of heat dissipation holes are provided.

[0010] As a further optimization of the present invention, one end of the installation tube is threadedly connected to a protection frame, a protection rod is provided inside the protection frame, and anti-slip grooves are provided on the surface of the protection frame.

[0011] As further optimized content of the present invention, the oil cooling assembly includes two support rods, an oil storage pan is provided between the two support rods, and the oil storage pan is located in front of the hot fin 2, an oil inlet pipe is provided at the top of one side of the oil storage pan, one end of the oil inlet pipe passes through the top of the inner wall of the multi-phase winding motor body, an oil outlet pipe is provided at the bottom of one side of the oil storage pan, one end of the oil outlet pipe passes through the bottom of the inner wall of the multi-phase winding motor body, and a small infusion pump is provided on one side of the middle of the oil outlet pipe.

[0012] As a further optimized content of the present invention, wherein: a mounting seat 2 is provided on one side of the surface of the mounting tube, and a plurality of mounting seats 2 are provided, and a fixing plate is provided between every two adjacent mounting seats 2.

[0013] As further optimized content of the present invention, S1: firstly, according to; a proper amount of coolant is filled inside the sealing box, the sealing box is connected with a plurality of cooling pipes, the coolant can flow into the plurality of cooling pipes through the water outlet groove, and the heat emitted from the surface of the multi-phase winding motor body is absorbed by the plurality of cooling pipes, so as to achieve the external cooling effect of the multi-phase winding motor body; S2: The output shaft is used to drive the connection disk to rotate synchronously. The surface of the connection disk is provided with a plurality of magnetic blocks 1 through the installation groove 1, and the plurality of magnetic blocks 1 are arranged in a circular pattern with N poles and S poles in sequence. At the same time, the inner wall of the support disk is provided with a plurality of magnetic blocks 2 through the installation groove 2, and the plurality of magnetic blocks 2 are arranged in a circular pattern with S poles and N poles in sequence. The plurality of magnetic blocks 2 are magnetically connected with the corresponding magnetic blocks 1, and the output shaft drives the connection disk to rotate by transmitting torque through the magnetic field. The connection disk accelerates the coolant to flow into the liquid storage tank through a plurality of blades for cooling circulation. The cooled coolant will flow into the sealing box through the return pipe under the action of water pressure for cooling circulation. S3: The oil storage pan is filled with a proper amount of cooling oil, and a small infusion pump provides power for the cooling oil delivery. Since the cooling oil is non-conductive and non-magnetic, the cooling oil enters the interior of the multi-phase winding motor body through the oil inlet pipe to cool the rotor, and then flows into the oil storage pan through the oil outlet pipe to cool the rotor, thereby realizing the cooling cycle of the multi-phase winding motor body; S4: The transmission seat shaft of a small motor is used to drive the fan blades to generate airflow, and the airflow blows to the surface of the oil storage pan and the surface of the second hot fin to achieve cooling of the liquid storage tank and the oil storage pan. Several ventilation slots are conducive to improving the airflow between the second hot fins, and the heat dissipation holes on the surface of the mounting tube are convenient for discharging heat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a liquid cooling assembly is provided, and the magnetic field of the connection disk is used to transmit torque to drive the connection disk to rotate. The connection disk accelerates the flow of coolant through a plurality of blades. The sealing box is connected with a plurality of cooling pipes, and the plurality of cooling pipes are used to absorb the heat emitted from the surface of the multi-phase winding motor body, so as to achieve the external cooling effect of the multi-phase winding motor body. The cooling effect is better. Since the output shaft and the connection disk are non-contact transmission, the heat generated by mechanical friction is reduced, the operation burden of the multi-phase winding motor body is greatly reduced, and the service life of the motor is extended; 2. In the present invention, an oil cooling assembly is provided, and a small infusion pump is used to provide power for cooling oil delivery. Since the cooling oil is non-conductive and non-magnetic, the high-speed rotating rotor can be efficiently cooled. This process not only effectively suppresses the internal temperature rise of the motor, but also ensures the stability and safety of the operation of the multi-phase winding motor body. Through the cooperation of the oil cooling assembly and the liquid cooling assembly, the overall heat dissipation efficiency of the multi-phase winding motor body is greatly improved, ensuring the continuous stability of the motor under long-term and high-load operation; 3. In the present invention, an air cooling component is provided, and the transmission seat shaft of a small motor is used to drive the fan blades to generate airflow. The airflow blows to the surface of the oil storage pan and the surface of the hot fin 2, and can cool the liquid storage tank and the oil storage pan at the same time. This design not only significantly reduces the operating cost, but also improves the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the explosion structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the sealing box of the present invention; Figure 5 It is a structural schematic diagram of the transmission assembly of the present invention; Figure 6 It is a schematic diagram of the explosion structure of the sealing box of the present invention; Figure 7 It is a structural schematic diagram of the support plate of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the liquid storage assembly of the present invention; Fig. 9 It is a schematic structural diagram of the oil cooling assembly of the present invention.

[0016] In the figure: 1. multi-phase winding motor body; 2. output shaft; 3. transmission assembly; 31. connection plate; 32. mounting slot 1; 33. magnetic block 1; 4. liquid cooling assembly; 41. sealing box; 411. heat pipe; 412. heat sink 1; 42. water outlet tank; 421. cooling pipe; 4211. mounting slot 3; 422. liquid storage assembly; 4221. liquid storage tank; 4222. heat sink; 4223. heat sink 2; 4224. ventilation slot; 4225. return pipe; 42 26. One-way valve; 43. Support plate; 44. Blade; 45. Mounting slot 2; 46. Magnetic block 2; 47. Mounting seat 1; 5. Mounting cylinder; 51. Air cooling assembly; 511. Fixing rod; 512. Small motor; 513. Fan blade; 514. Heat dissipation hole; 515. Protection frame; 516. Protection rod; 52. Mounting seat 2; 53. Fixing plate; 6. Oil cooling assembly; 61. Support rod; 62. Oil storage tray; 63. Oil inlet pipe; 64. Oil outlet pipe; 65. Small infusion pump. DETAILED DESCRIPTION

[0017] See also Figure 1-9 , the present invention provides a technical solution: A new energy automobile motor based on multi-phase winding and a method of using the same, comprising a multi-phase winding motor body 1, an output shaft 2 and a mounting barrel 5, wherein the middle of the multi-phase winding motor body 1 is rotatably connected to the output shaft 2, a transmission assembly 3 is fixedly arranged on the surface of the output shaft 2, one end of the multi-phase winding motor body 1 is fixedly arranged with a liquid cooling assembly 4, the other end of the multi-phase winding motor body 1 is fixedly arranged with a mounting barrel 5, one side of the inner wall of the mounting barrel 5 is fixedly arranged with an air cooling assembly 51, and the middle part of the inner wall of the mounting barrel 5 is fixedly arranged with an oil cooling assembly 6; the transmission assembly 3 comprises a connecting plate 31, a mounting groove 32 is opened on the surface of the connecting plate 31, and the mounting groove A plurality of mounting grooves 32 are provided, and a magnetic block 33 is provided inside the mounting groove 32; the liquid cooling component 4 includes a sealing box 41, a water outlet groove 42 is provided on one side of the sealing box 41, and a plurality of water outlet grooves 42 are provided, a support plate 43 is rotatably connected inside the sealing box 41, a blade 44 is provided on the surface of the support plate 43, and a plurality of blades 44 are provided, a mounting groove 45 is provided on the inner wall of the support plate 43, and a plurality of mounting grooves 45 are provided, a magnetic block 46 is provided inside the mounting groove 45, a cooling pipe 421 is provided at one end of the water outlet groove 42, and a liquid storage component 422 is provided at one end of the plurality of cooling pipes 421.

[0018] As a technical solution for further implementing the present scheme, the surface of the cooling tube 421 is fixedly connected to the multi-phase winding motor body 1 , and the outer surface of the multi-phase winding motor body 1 is provided with a mounting groove 4211 matching the cooling tube 421 .

[0019] As a further technical solution for implementing the present invention, a heat dissipation pipe 411 is provided on one side of the surface of the sealing box 41 , a heat dissipation fin 412 is provided on the surface of the heat dissipation pipe 411 , and a mounting seat 47 is provided on the other side of the surface of the sealing box 41 .

[0020] As a technical solution for further implementation of the present scheme, the liquid storage assembly 422 includes a liquid storage tank 4221, which is arranged at one end inside the mounting tube 5, and one side of the mounting tube 5 is fixedly connected to a plurality of cooling tubes 421. A heat sink 4222 is provided on the other side of the liquid storage tank 4221, and a heat sink 4223 is provided on the surface of the heat sink 4222. A plurality of heat fins 4223 are provided, and the plurality of heat fins 4223 are cross-arranged, and a ventilation groove 4224 is provided on the surface of the heat fin 4223.

[0021] As a technical solution for further implementing the present invention, a return pipe 4225 is provided between the bottom end of the sealing box 41 and the bottom end of the liquid storage tank 4221 , and a one-way valve 4226 is provided on one side of the return pipe 4225 .

[0022] As a technical solution for further implementing the present scheme, the air cooling assembly 51 includes a fixing rod 511, a small motor 512 is provided in the middle of the fixing rod 511 through a motor seat, a drive shaft of the small motor 512 is provided with fan blades 513, and a heat dissipation hole 514 is opened on the surface of the mounting tube 5, and a plurality of heat dissipation holes 514 are provided.

[0023] As a technical solution for further implementing the present invention, one end of the mounting tube 5 is threadedly connected with a protection frame 515 , a protection rod 516 is provided inside the protection frame 515 , and anti-slip grooves are provided on the surface of the protection frame 515 .

[0024] As a technical solution for further implementing the present scheme, the oil cooling assembly 6 includes two support rods 61, an oil storage pan 62 is provided between the two support rods 61, and the oil storage pan 62 is located in front of the hot fin 2 4223, an oil inlet pipe 63 is provided at the top of one side of the oil storage pan 62, one end of the oil inlet pipe 63 passes through the top of the inner wall of the multi-phase winding motor body 1, an oil outlet pipe 64 is provided at the bottom of one side of the oil storage pan 62, one end of the oil outlet pipe 64 passes through the bottom of the inner wall of the multi-phase winding motor body 1, and a small infusion pump 65 is provided on one side of the middle of the oil outlet pipe 64.

[0025] As a technical solution for further implementing the present scheme, a second mounting seat 52 is provided on one side of the surface of the mounting tube 5 , and a plurality of second mounting seats 52 are provided, and a fixing plate 53 is provided between every two adjacent second mounting seats 52 .

[0026] S1: First, according to; a proper amount of coolant is filled inside the sealing box 41, the sealing box 41 is connected with a plurality of cooling pipes 421, the coolant can flow into the plurality of cooling pipes 421 through the water outlet 42, and the heat emitted from the surface of the multi-phase winding motor body 1 is absorbed by the plurality of cooling pipes 421, so as to achieve the external cooling effect of the multi-phase winding motor body 1; S2: Since there is a gap between the connecting disk 31 and the inner wall of the sealing box 41, and the sealing box 41 is made of insulating plastic material, the output shaft 2 is used to drive the connecting disk 31 to rotate synchronously. The surface of the connecting disk 31 is provided with a plurality of magnetic blocks 33 through the mounting groove 32, and the plurality of magnetic blocks 33 are N poles and S poles arranged in a circular pattern in sequence. At the same time, a plurality of magnetic blocks 46 are provided on the inner wall of the supporting disk 43 through the mounting groove 45, and the plurality of magnetic blocks 46 are S poles and N poles arranged in a circular pattern in sequence. The plurality of magnetic blocks 46 are magnetically connected to the corresponding magnetic blocks 33 by using the magnetic connection. The output shaft 2 drives the connecting disk 31 to rotate by transmitting torque through the magnetic field. The connecting disk 31 accelerates the coolant to flow into the liquid storage tank 4221 through the plurality of blades 44 for cooling circulation. The cooled coolant will flow into the sealing box 41 through the return pipe 4225 under the action of water pressure for cooling circulation. S3: The oil storage pan 62 is filled with a proper amount of cooling oil, and a small infusion pump 65 provides power for the cooling oil delivery. Since the cooling oil is non-conductive and non-magnetic, the cooling oil enters the interior of the multi-phase winding motor body 1 through the oil inlet pipe 63 to cool the rotor, and then flows into the oil storage pan 62 through the oil outlet pipe 64 to cool, thereby realizing a cooling cycle for the multi-phase winding motor body 1; S4: The transmission seat shaft of the small motor 512 is used to drive the fan blades 513 to generate airflow, and the airflow blows to the surface of the oil storage pan 62 and the surface of the second hot fin 4223, so as to cool the liquid storage tank 4221 and the oil storage pan 62. A plurality of ventilation slots 4224 are conducive to improving the airflow between the second hot fin 4223, and the heat dissipation holes 514 on the surface of the mounting tube 5 are convenient for discharging heat.

[0027] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A new energy automobile motor based on a multi-phase winding and a method of using the same, comprising a multi-phase winding motor body (1), an output shaft (2) and a mounting cylinder (5), characterized in that: An output shaft (2) is rotatably connected to the middle of the multi-phase winding motor body (1), a transmission assembly (3) is fixedly provided on the surface of the output shaft (2), a liquid cooling assembly (4) is fixedly provided on one end of the multi-phase winding motor body (1), a mounting tube (5) is fixedly provided on the other end of the multi-phase winding motor body (1), an air cooling assembly (51) is fixedly provided on one side of the inner wall of the mounting tube (5), and an oil cooling assembly (6) is fixedly provided on the middle of the inner wall of the mounting tube (5); The transmission assembly (3) comprises a connection disk (31), a surface of the connection disk (31) is provided with a mounting groove (32), a plurality of mounting grooves (32) are provided, and a magnetic block (33) is provided inside the mounting groove (32); The liquid cooling assembly (4) comprises a sealing box (41), one side of the sealing box (41) is provided with a water outlet groove (42), and a plurality of water outlet grooves (42) are provided. The sealing box (41) is rotatably connected to a support plate (43) inside, a surface of the support plate (43) is provided with blades (44), and a plurality of blades (44) are provided. The inner wall of the support plate (43) is provided with a second mounting groove (45), and a plurality of second mounting grooves (45) are provided. A second magnetic block (46) is provided inside the second mounting groove (45). A cooling pipe (421) is provided at one end of the water outlet groove (42), and a liquid storage assembly (422) is provided at one end of the plurality of cooling pipes (421).

2. A new energy automobile motor based on multi-phase winding and a method of using the same according to claim 1, characterized in that: The surface of the cooling tube (421) is fixedly connected to the multi-phase winding motor body (1), and the outer surface of the multi-phase winding motor body (1) is provided with a third installation groove (4211) matching the cooling tube (421).

3. The new energy automobile motor based on multi-phase winding and the use method thereof according to claim 1, characterized in that: A heat dissipation pipe (411) is provided on one side of the surface of the sealing box (41), a heat dissipation fin (412) is provided on the surface of the heat dissipation pipe (411), and a mounting seat (47) is provided on the other side of the surface of the sealing box (41).

4. A new energy automobile motor based on multi-phase winding and a method of using the same according to claim 1, characterized in that: The liquid storage assembly (422) comprises a liquid storage tank (4221), wherein the liquid storage tank (4221) is arranged at one end inside the mounting tube (5), one side of the mounting tube (5) is fixedly connected to a plurality of cooling tubes (421), and the other side of the liquid storage tank (4221) is provided with a heat sink (4222), and a surface of the heat sink (4222) is provided with a second heat fin (4223), a plurality of the second heat fins (4223) are provided, and the plurality of second heat fins (4223) are cross-arranged, and a ventilation groove (4224) is provided on the surface of the second heat fin (4223).

5. A new energy automobile motor based on multi-phase winding and a method of using the same according to claim 4, characterized in that: A return pipe (4225) is provided between the bottom end of the sealing box (41) and the bottom end of the liquid storage tank (4221), and a one-way valve (4226) is provided on one side of the return pipe (4225).

6. The new energy automobile motor based on multi-phase winding and the use method thereof according to claim 1, characterized in that: The air cooling assembly (51) comprises a fixing rod (511), a small motor (512) is arranged in the middle of the fixing rod (511) through a motor seat, a drive shaft of the small motor (512) is provided with fan blades (513), and a surface of the mounting tube (5) is provided with a heat dissipation hole (514), and a plurality of heat dissipation holes (514) are provided.

7. The new energy automobile motor based on multi-phase winding and the use method thereof according to claim 1, characterized in that: One end of the installation tube (5) is threadedly connected to a protection frame (515), a protection rod (516) is provided inside the protection frame (515), and a surface of the protection frame (515) is provided with anti-slip grooves.

8. The new energy automobile motor based on multi-phase winding and the use method thereof according to claim 4, characterized in that: The oil cooling assembly (6) comprises two support rods (61), an oil storage pan (62) is provided between the two support rods (61), and the oil storage pan (62) is located in front of the second hot fin (4223), an oil inlet pipe (63) is provided at the top of one side of the oil storage pan (62), one end of the oil inlet pipe (63) penetrates the top of the inner wall of the multi-phase winding motor body (1), an oil outlet pipe (64) is provided at the bottom of one side of the oil storage pan (62), one end of the oil outlet pipe (64) penetrates the bottom of the inner wall of the multi-phase winding motor body (1), and a small infusion pump (65) is provided on one side of the middle of the oil outlet pipe (64).

9. The new energy automobile motor based on multi-phase winding and the use method thereof according to claim 1, characterized in that: A second mounting seat (52) is provided on one side of the surface of the mounting tube (5), and a plurality of second mounting seats (52) are provided, with a fixing plate (53) being provided between every two adjacent second mounting seats (52).

10. A detection method for a new energy vehicle motor based on a multi-phase winding and a method for using the same according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, a proper amount of cooling liquid is filled inside the sealing box (41), the sealing box (41) is connected to a plurality of cooling tubes (421), the cooling liquid can flow into the plurality of cooling tubes (421) through the water outlet groove (42), and the heat radiated from the surface of the multi-phase winding motor body (1) is absorbed by the plurality of cooling tubes (421), thereby achieving an external cooling effect on the multi-phase winding motor body (1); S2: The output shaft (2) is used to drive the connecting disk (31) to rotate synchronously. The surface of the connecting disk (31) is provided with a plurality of magnetic blocks (33) through the mounting groove (32). The plurality of magnetic blocks (33) are arranged in a circular pattern with N poles and S poles in sequence. Meanwhile, the inner wall of the supporting disk (43) is provided with a plurality of magnetic blocks (46) through the mounting groove (45). The plurality of magnetic blocks (46) are arranged in a circular pattern with S poles and N poles in sequence. The plurality of magnetic blocks (46) are magnetically connected to the corresponding magnetic blocks (33). The output shaft (2) drives the connecting disk (31) to rotate by transmitting torque through the magnetic field. The connecting disk (31) accelerates the coolant to flow into the liquid storage tank (4221) through the plurality of blades (44) for cooling circulation. The cooled coolant flows into the sealing box (41) through the return pipe (4225) under the action of water pressure for cooling circulation. S3: An appropriate amount of cooling oil is filled inside the oil storage pan (62), and a small infusion pump (65) provides power for the cooling oil delivery. Since the cooling oil is non-conductive and non-magnetic, the cooling oil enters the interior of the multi-phase winding motor body (1) through the oil inlet pipe (63), thereby cooling the rotor, and then flows into the oil storage pan (62) through the oil outlet pipe (64) for cooling, thereby achieving a cooling cycle for the multi-phase winding motor body (1); S4: The drive seat shaft of the small motor (512) is used to drive the fan blades (513) to generate airflow, and the airflow is blown to the surface of the oil storage pan (62) and the surface of the second hot fin (4223), thereby cooling the liquid storage tank (4221) and the oil storage pan (62). The plurality of ventilation slots (4224) are conducive to improving the airflow between the second hot fin (4223), and the heat dissipation holes (514) on the surface of the mounting tube (5) are convenient for discharging heat.

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