High torque electric drive integrated direct drive motor

Abstract

The present invention discloses a large torque electric drive integrated direct drive motor, which relates to the technical field of motors, wherein the large torque electric drive integrated direct drive motor comprises: a stator, provided with a first channel; a reducer, arranged in the stator, and a second channel is arranged in the reducer; a rotor, rotatably arranged in the stator and transmission-connected with the reducer, a third channel is arranged in the rotor, and the first channel, the second channel and the third channel are connected in sequence; a driving pump, arranged in the stator, the first channel and the third channel are respectively connected to the driving pump, and the driving pump is used to drive the coolant to flow in the first channel, the second channel and the third channel; and a heat dissipation structure, arranged in the driving pump to cool the coolant in the driving pump. The present invention improves the heat dissipation capacity of the motor and improves the efficiency of the motor.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to a high-torque electric-drive integrated direct-drive motor. Background Art

[0002] At present, motors generally dissipate heat through air cooling and other methods. Although this method is simple and easy to implement, its heat dissipation effect is limited, which greatly affects the further improvement of motor efficiency. Although natural air cooling or forced air cooling can take away some heat, in high power density and high load application scenarios, this passive or active air cooling method is often not enough to dissipate the large amount of heat generated by the motor during operation in a timely and effective manner. Summary of the invention

[0003] The main purpose of the present invention is to propose a large torque electric drive integrated direct drive motor, aiming to improve the heat dissipation capacity of the motor, thereby improving the efficiency and reliability of the motor.

[0004] To achieve the above object, the present invention proposes a high-torque electric-drive integrated direct-drive motor, comprising:

[0005] A stator having a first channel;

[0006] A reducer is arranged on the stator, and a second channel is arranged in the reducer;

[0007] a rotor, rotatably disposed in the stator and drivingly connected to the reducer, wherein a third channel is disposed in the rotor, and the first channel, the second channel and the third channel are sequentially connected;

[0008] a driving pump, disposed on the stator, the first channel and the third channel being connected to the driving pump respectively, and the driving pump being used to drive the coolant to flow in the first channel, the second channel and the third channel; and

[0009] The heat dissipation structure is arranged on the driving pump to cool the cooling liquid in the driving pump.

[0010] In one embodiment, the stator includes a housing and a stator coil disposed in the housing, and the first channel includes:

[0011] A first heat dissipation channel is provided in the housing, and the first heat dissipation channel extends around the stator coil along the circumference of the housing;

[0012] The first flow guiding channel is arranged in the housing, and the first flow guiding channel extends along the axial direction of the housing and is communicated with the first heat dissipation channel.

[0013] In one embodiment, a plurality of the first heat dissipation channels are provided, and the plurality of the first heat dissipation channels are spaced apart along the axial direction of the housing; and / or a plurality of the first guide channels are provided, and the plurality of the first guide channels are arranged in a circular array around the first heat dissipation channel.

[0014] In one embodiment, the reducer includes a housing and a planetary gear set, a mounting cavity is provided inside the housing, the planetary gear set is arranged in the mounting cavity, the third channel is connected to the mounting cavity, and the second channel includes:

[0015] A second flow guiding channel is provided on one side of the mounting cavity on the housing, the second flow guiding channel extends axially along the housing and is connected to the first flow guiding channel;

[0016] The drainage hole is arranged on the inner wall of the installation cavity and is connected to the second diversion channel.

[0017] In one embodiment, a plurality of the drainage holes are provided, and the plurality of the drainage holes are arranged at intervals along the extension direction of the second guide channel; and / or a plurality of the second guide channels are provided, and the plurality of the second guide channels are arranged at intervals around the installation cavity.

[0018] In one embodiment, the rotor comprises:

[0019] A central shaft rotatably disposed in the housing;

[0020] A rotor core; sleeved on the central axis, wherein a plurality of mounting grooves are arranged in the rotor core and are arranged at intervals around the central axis, and the mounting grooves are arranged in multiple layers along the radial direction of the rotor core;

[0021] A magnet is disposed in each of the mounting slots.

[0022] In one embodiment, the central shaft is provided with a positioning shoulder, the rotor further comprises a positioning ring, the positioning ring cooperates with the positioning shoulder to clamp the iron core, and the third channel comprises:

[0023] A reflux channel runs through the central axis along the axial direction of the central axis, and a liquid inlet hole and a liquid outlet hole are arranged at both ends of the reflux channel, and the liquid inlet hole and the liquid outlet hole extend along the radial direction of the central axis;

[0024] A cooling channel, provided on the rotor core and extending along the axial direction of the rotor core;

[0025] A third flow guide channel is provided in the positioning ring, and the third flow guide channel is connected with the liquid inlet hole and the cooling channel;

[0026] The fourth flow guide channel is arranged in the positioning shaft shoulder, and the fourth flow guide channel is connected with the liquid outlet and the cooling channel.

[0027] In one embodiment, a plurality of cooling channels are provided, and the plurality of cooling channels are arranged at intervals around the central axis.

[0028] In one embodiment, the drive pump comprises:

[0029] A pump housing, wherein a pump chamber for accommodating coolant is disposed inside the pump chamber, wherein the pump chamber is connected to the first channel and the third channel;

[0030] A centrifugal pump wheel is rotatably disposed in the pump chamber, and the centrifugal pump wheel is connected to the rotor.

[0031] In one embodiment, the heat dissipation structure includes:

[0032] A heat dissipation fin is arranged on the pump housing, one end of the heat dissipation fin extends into the pump cavity, and the other end extends to the outside of the pump housing;

[0033] A transmission shaft, one end of which extends into the pump chamber and is coaxially connected to the rotor;

[0034] The impeller is arranged on the transmission shaft.

[0035] In the technical solution of the present invention, the large-torque electric-driven integrated direct-drive motor includes a stator, a reducer is arranged on the stator, a rotor is rotatably arranged in the stator, and the rotor is transmission-connected to the reducer. In addition, a driving pump is also arranged on the stator, a first channel is arranged in the stator, a second channel is arranged in the reducer, and a third channel is arranged in the rotor, and the first channel, the second channel and the third channel are connected in sequence. In addition, the driving pump is connected with the first channel and the third channel, and a coolant is arranged in the driving pump. The coolant circulates between the driving pump-first channel-second channel-third channel under the drive of the driving pump, and cools the stator, the reducer and the rotor in sequence. Then, the coolant that absorbs heat flows back to the driving pump, and dissipates the heat through the heat dissipation structure arranged on the driving pump, thereby realizing the cooling of the coolant. In this way, direct cooling of all components in the motor can be achieved, thereby improving the heat dissipation effect and the efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0037] Figure 1 A schematic cross-sectional structure diagram of a high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0038] Figure 2 An exploded schematic diagram of a high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0039] Figure 3 A schematic diagram of the cross-sectional structure of a casing in a high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0040] Figure 4 A schematic diagram of the cross-sectional structure of a housing in a high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0041] Figure 5 A schematic cross-sectional structure diagram of a rotor in a high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0042] Figure 6 A schematic diagram of the structure of the rotor core in the high-torque electric-drive integrated direct-drive motor provided by the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of the pump housing in the high-torque electric-driven integrated direct-drive motor provided by the present invention.

[0044] Description of Figure Numbers:

[0045] 10. stator; 11. casing; 12. stator coil; 20. reducer; 21. housing; 22. mounting cavity; 23. planetary gear set; 30. rotor; 31. central axis; 32. rotor core; 33. magnet; 34. positioning shoulder; 35. positioning ring; 40. drive pump; 41. pump casing; 42. centrifugal pump wheel; 50. heat dissipation structure; 51. heat dissipation fins; 52. transmission shaft; 53. impeller; 100. first channel; 110. first heat dissipation channel; 120. first guide channel; 200. second channel; 210. second guide channel; 220. drainage hole; 300. third channel; 310. reflux channel; 320. liquid inlet hole; 330. liquid outlet hole; 340. cooling channel; 350. third guide channel; 360. fourth guide channel.

[0046] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] In order to improve the heat dissipation effect of the motor to improve the efficiency and reliability of the motor, the present technical solution proposes a large-torque electric-driven integrated direct-drive motor, including: a stator 10, provided with a first channel 100; a reducer 20, arranged in the stator 10, and a second channel 200 is arranged in the reducer 20; a rotor 30, rotatably arranged in the stator 10 and transmission-connected with the reducer 20, a third channel 300 is arranged in the rotor 30, and the first channel 100, the second channel 200 and the third channel 300 are connected in sequence; a drive pump 40, arranged in the stator 10, the first channel 100 and the third channel 300 are respectively connected to the drive pump 40, and the drive pump 40 is used to drive the coolant to flow in the first channel 100, the second channel 200 and the third channel 300; and a heat dissipation structure 50, arranged in the drive pump 40 to cool the coolant in the drive pump 40.

[0051] In the technical solution of the present invention, the high-torque electric drive integrated direct drive motor includes a stator 10, a reducer 20 is arranged on the stator 10, a rotor 30 is rotatably arranged in the stator 10, and the rotor 30 is transmission-connected with the reducer 20. In addition, a driving pump 40 is also arranged on the stator 10, a first channel 100 is arranged in the stator 10, a second channel 200 is arranged in the reducer 20, and a third channel 300 is arranged in the rotor 30. The first channel 100, the second channel 200 and the third channel 300 are connected in sequence. In addition, the driving pump 40 is connected to the first channel 10. 0 and the third channel 300 are connected, and a coolant is arranged in the driving pump 40. The coolant circulates among the driving pump 40, the first channel 100, the second channel 200 and the third channel 300 under the drive of the driving pump 40, and cools down the stator 10, the reducer 20 and the rotor 30 in turn. Then, the coolant that absorbs the heat flows back to the driving pump 40, and dissipates the heat through the heat dissipation structure 50 arranged on the driving pump 40, so as to realize the cooling of the coolant. In this way, all the components in the motor can be directly cooled, thereby improving the heat dissipation effect and the efficiency of the motor.

[0052] like Figures 1 to 7 In one embodiment of the present invention, the high-torque electric drive integrated direct-drive motor includes a stator 10, a first channel 100 extending along the axial direction of the stator 10 is arranged inside the stator 10, a reducer 20 is arranged at one end of the stator 10, the reducer 20 may be a planetary reducer 20, a second channel 200 is arranged inside the reducer 20, the second channel 200 is communicated with the end of the first channel 100, and a rotor 30 is rotatably arranged inside the stator 10, a third channel 300 extending along its own axial direction is arranged inside the rotor 30, the end of the third channel 300 is communicated with the second channel 200, and a driving pump 40 is arranged at the other end of the stator 10 opposite to the reducer 20, the driving pump 40 may be a centrifugal pump, the driving pump 40 is communicated with the first channel 100 and the third channel 300, and the driving pump 40, the first channel 100, the second channel 200 and the third channel 300 are connected. The three channels 300 are all filled with coolant, and the coolant flows along the path of drive pump 40—first channel 100—second channel 200—third channel 300—drive pump 40. When flowing through the first channel 100, the heat on the stator 10 can be absorbed by the coolant, when flowing through the second channel 200, the heat on the reducer 20 can be absorbed by the coolant, and when flowing through the third channel 300, the heat on the rotor 30 can be absorbed by the coolant. In this way, the coolant will carry the heat of the stator 10, the rotor 30 and the reducer 20 back to the drive pump 40, thereby cooling the stator 10, the rotor 30 and the reducer 20. In this way, the resistance loss in the stator 10 can be reduced, which helps to maintain the magnetism of the permanent magnet 33 on the rotor 30, and can reduce the risk of demagnetization. At the same time, it is also beneficial to improve the stability of the operation of the reducer 20, thereby improving the efficiency and reliability of the motor.

[0053] like Figures 1 to 3 In one embodiment of the present invention, the stator 10 includes a housing 11 and a stator coil 12 disposed in the housing 11, and the first channel 100 includes: a first heat dissipation channel 110, disposed in the housing 11, and extending around the stator coil 12 along the circumference of the housing 11; a first guide channel 120, disposed in the housing 11, and extending along the axial direction of the housing 11 and communicating with the first heat dissipation channel 110.

[0054] Among them, the stator 10 includes a housing 11 and a stator coil 12 fixed in the housing 11, and the first channel 100 includes a first heat dissipation channel 110, which is arranged in the housing 11 and extends around the stator coil 12. In addition, a first guide channel 120 is also arranged in the housing 11, and the first guide channel 120 extends along the axial direction of the housing 11 and is connected to the first heat dissipation channel 110. The coolant can enter the first heat dissipation channel 110 through the first guide channel 120, and the heat of the stator coil 12 is transferred to the housing 11 and can be transferred to the coolant in the first heat dissipation channel 110. Then the coolant can transfer the heat through the first guide channel 120 to achieve heat dissipation of the stator coil 12. In this solution, since the first guide channel 120 extends around the stator coil 12 for a circle, it can absorb the heat emitted from any area of ​​the stator coil 12, which is beneficial to improving the heat dissipation effect.

[0055] In another embodiment of the present invention, in order to improve the heat dissipation effect, a plurality of first heat dissipation channels 110 are provided, and the plurality of first heat dissipation channels 110 are arranged at intervals along the axial direction of the housing 11, so that the plurality of first heat dissipation channels 110 can be arranged along the axial direction of the stator coil 12, and absorb heat from different axial positions of the stator coil 12, which is beneficial to increase the heat that can be absorbed by the coolant and improve the heat dissipation effect of the stator coil 12; in addition, in another embodiment, a plurality of first guide channels 120 are provided, and the plurality of first guide channels 120 are arranged in a circular array around the first heat dissipation channel 110, so that the flow rate of the coolant in the housing 11 can be increased, so that the heat of the stator coil 12 can be carried out by the coolant in time, further improving the heat dissipation effect.

[0056] like Figure 1 , Figure 2 and Figure 4In one embodiment of the present invention, the reducer 20 includes a housing 21 and a planetary gear set 23. The housing 21 is provided with a mounting cavity 22. The planetary gear set 23 is disposed in the mounting cavity 22. The third channel 300 is connected to the mounting cavity 22. The second channel 200 includes: a second flow guide channel 210, which is disposed on one side of the mounting cavity 22 on the housing 21. The second flow guide channel 210 extends axially along the housing 21 and is connected to the first flow guide channel 120; a drainage hole 220, which is disposed on the inner side wall of the mounting cavity 22 and is connected to the second flow guide channel 210.

[0057] Among them, the coolant in the first guide channel 120 can flow into the second guide channel 210, and enter the installation cavity 22 through the drainage hole 220. The coolant entering the installation cavity 22 can fully contact the planetary gear set 23 to absorb the heat generated when the planetary gear set 23 rotates. Then the coolant can flow out of the installation cavity 22 from the third channel 300 to achieve heat dissipation of the reducer 20; in this solution, the planetary gear set 23 is equivalent to running in the coolant, which can improve the heat dissipation efficiency of the planetary gear set 23, and then improve the reliability of the operation of the planetary gear set 23. In addition, the coolant can provide lubrication for the planetary gear set 23, reduce the wear of the reducer 20, and further improve the reliability of the operation of the high-torque electric drive integrated direct-drive motor.

[0058] like Figure 4 In one embodiment of the present invention, a plurality of guide holes 220 are provided, and the plurality of guide holes 220 are arranged at intervals along the extension direction of the second guide channel 210. Such an arrangement can reduce the flow resistance of the coolant entering the installation cavity 22 from the second guide channel 210, which is conducive to improving the flow rate of the coolant, thereby further improving the heat exchange efficiency with the planetary gear set 23 and the heat dissipation effect on the reducer 20. In addition, in another embodiment, a plurality of second guide channels 210 are provided, and the plurality of second guide channels 210 are arranged at intervals around the installation cavity 22. Such an arrangement can also increase the flow rate of the coolant in the reducer 20, thereby further improving the heat exchange efficiency with the planetary gear set 23 and the heat dissipation effect on the reducer 20.

[0059] like Figure 5 and Figure 6 In one embodiment of the present invention, the rotor 30 includes: a central axis 31, which is rotatably disposed in the housing 11; a rotor core 32, which is sleeved on the central axis 31, and a plurality of installation slots are arranged in the rotor core 32 at intervals around the central axis 31, and the installation slots are arranged in multiple layers at intervals along the radial direction of the rotor core 32; and a magnet 33, wherein a magnet 33 is arranged in each installation slot. In this solution, by arranging multiple layers of magnets 33 along the radial direction of the rotor core 32, the magnetic flux density of the rotor 30 can be increased, which is beneficial to increase the torque of the motor. In addition, by embedding the magnets 33 in the installation slots, the connection strength between the magnets 33 and the rotor core 32 can also be increased, thereby ensuring the reliability of the rotor 30 during operation.

[0060] like Figure 5 In one embodiment of the present invention, a positioning shoulder 34 is provided on the central axis 31, and the rotor 30 further includes a positioning ring 35, which cooperates with the positioning shoulder 34 to clamp the iron core, and the third channel 300 includes: a return flow channel, which penetrates the central axis 31 along the axial direction of the central axis 31, and a liquid inlet hole 320 and a liquid outlet hole 330 are provided at both ends of the return flow channel, and the liquid inlet hole 320 and the liquid outlet hole 330 extend along the radial direction of the central axis 31; a cooling flow channel 340, which is provided in the rotor core 32 and extends along the axial direction of the rotor core 32; a third guide flow channel 350, which is provided in the positioning ring 35, and the third guide flow channel 350 connects the liquid inlet hole 320 and the cooling flow channel 340; a fourth guide flow channel 360, which is provided in the positioning shoulder 34, and the fourth guide flow channel 360 connects the liquid outlet hole 330 and the cooling flow channel 340. The positioning ring 35 can be fixed on the central shaft 31 by means of interference fit. The positioning ring 35 cooperates with the positioning shoulder 34 to clamp the iron core. One end of the central shaft 31 where the positioning ring 35 is located is connected to the reducer 20. The coolant flowing out of the mounting cavity 22 of the reducer 20 can flow into the return channel 310. When passing through the position of the liquid inlet hole 320, a part of the coolant continues to flow along the return channel 310 to cool the middle area of ​​the central shaft 31, and the other part of the coolant enters the positioning through the liquid inlet hole 320. The third flow guide channel 350 in the ring 35 has its other end connected to the cooling channel 340 on the rotor core 32. The coolant can enter the cooling channel 340 from the third flow guide channel 350, and then flow along the axis of the rotor core 32 to the shaft shoulder. During this process, the heat of the rotor core 32 and the magnet 33 is absorbed by the coolant, and then the coolant can flow back to the return channel through the fourth flow guide channel 360 on the shaft shoulder through the liquid outlet 330, thereby achieving heat dissipation for the rotor 30. In this solution, the design of the flow channel structure allows the coolant to flow through the main components such as the rotor core 32 and the center shaft 31, thereby achieving sufficient heat dissipation for the rotor 30, which is beneficial to improving the heat dissipation effect and thus improving the efficiency of the motor. Figure 6 In order to further improve the heat dissipation effect of the rotor core 32, in one embodiment of the present invention, a plurality of cooling channels 340 are provided, and the plurality of cooling channels 340 are arranged at intervals around the central axis 31, so that the flow rate of the coolant in the rotor core 32 and the contact area between the coolant and the rotor core 32 can be increased, thereby improving the heat dissipation effect of the rotor core 32.

[0061] like Figure 2 and Figure 7In one embodiment of the present invention, the driving pump 40 includes: a pump housing 41, in which a pump chamber for accommodating coolant is arranged, and the pump chamber is connected to the first channel 100 and the third channel 300; a centrifugal pump wheel 42, which is rotatably arranged in the pump chamber, and the centrifugal pump wheel 42 is connected to the rotor 30. Among them, the pump housing 41 is provided with a pump chamber with an opening on one side. The pump housing 41 is buckled on the other end of the casing 11 opposite to the reducer 20. The central axis 31 passes through the casing 11 into the pump chamber. The first guide channel 120 on the casing 11 also passes through the pump chamber. The coolant in the central axis 31 can eventually flow into the pump chamber. In addition, a centrifugal pump wheel 42 is connected to the central axis 31. The centrifugal pump wheel 42 can adopt a conventional model on the market. When the motor is working, the centrifugal pump wheel 42 rotates with the central axis 31, and the coolant discharged from the central axis 31 into the pump chamber can flow away from the central axis 31 under the action of the centrifugal pump wheel 42, and then can enter the casing 11 from the first guide channel 120 for the next cycle. In the present solution, the driving pump 40 does not need to be set up with external power, and can be driven to operate only by the work of the motor itself, thus simplifying the structure of the motor. In addition, the speed at which the driving pump 40 pumps the coolant is related to the motor speed. The higher the motor speed, the higher the heat generated, and correspondingly the operating speed of the driving pump 40 and the flow rate of the coolant will also be higher, thereby improving the heat dissipation effect. That is, the heat dissipation efficiency in the present solution is adapted to the operating state of the motor, and the heat dissipation of the motor is adaptively adjusted, thereby improving the level of automation.

[0062] like Figure 2 and Figure 7 In one embodiment of the present invention, the heat dissipation structure 50 includes: a heat dissipation fin 51, which is arranged on the pump housing 41, and one end of the heat dissipation fin 51 extends into the pump cavity, and the other end extends to the outside of the pump housing 41; a transmission shaft 52, one end of which extends into the pump cavity and is coaxially connected to the rotor 30; an impeller 53, which is arranged on the transmission shaft 52. In this solution, the heat dissipation fin 51 can be made of a material with good thermal conductivity such as copper. The heat absorbed by the coolant can be transferred to the outside through the heat dissipation fin 51, and then the impeller 53 rotates under the drive of the central shaft 31 to dissipate the heat from the heat dissipation fin 51, so that the heat is dissipated to the external environment. In this solution, since the impeller 53 is connected to the central shaft 31 through the transmission shaft 52, the rotation of the impeller 53 does not require external force to drive it, which is conducive to simplifying the structure of the motor. The rotation speed of the impeller 53 is related to the motor rotation speed, and adaptive adjustment of heat dissipation is also achieved, thereby improving the automation level of the motor.

[0063] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high torque electric drive integrated direct drive motor, characterized in that: include: A stator having a first channel; A reducer is arranged on the stator, and a second channel is arranged in the reducer; a rotor, rotatably disposed in the stator and drivingly connected to the reducer, wherein a third channel is disposed in the rotor, and the first channel, the second channel and the third channel are sequentially connected; A driving pump, disposed on the stator, the first channel and the third channel are respectively connected to the driving pump, and the driving pump is used to drive the coolant to flow in the first channel, the second channel and the third channel; and A heat dissipation structure, provided on the driving pump to cool the coolant in the driving pump; The stator includes a housing and a stator coil disposed in the housing, and the first channel includes: A first heat dissipation channel is provided in the housing, and the first heat dissipation channel extends around the stator coil along the circumference of the housing; A first flow guide channel is provided in the housing, the first flow guide channel extends along the axial direction of the housing and is communicated with the first heat dissipation channel; The reducer comprises a housing and a planetary gear set, a mounting cavity is arranged inside the housing, the planetary gear set is arranged in the mounting cavity, the third channel is connected to the mounting cavity, and the second channel comprises: A second flow guiding channel is provided on one side of the mounting cavity on the housing, the second flow guiding channel extends axially along the housing and is connected to the first flow guiding channel; a drainage hole, provided on the inner wall of the installation cavity and connected to the second diversion channel; The rotor comprises: A central shaft rotatably disposed in the housing; A rotor core; sleeved on the central axis, wherein a plurality of mounting grooves are arranged in the rotor core and are arranged at intervals around the central axis, and the mounting grooves are arranged in multiple layers along the radial direction of the rotor core; A magnet, wherein one magnet is disposed in each of the mounting grooves; The central shaft is provided with a positioning shoulder, the rotor further comprises a positioning ring, the positioning ring cooperates with the positioning shoulder to clamp the iron core, and the third channel comprises: A reflux channel runs through the central axis along the axial direction of the central axis, and a liquid inlet hole and a liquid outlet hole are arranged at both ends of the reflux channel, and the liquid inlet hole and the liquid outlet hole extend along the radial direction of the central axis; A cooling channel, provided on the rotor core and extending along the axial direction of the rotor core; A third flow guide channel is provided in the positioning ring, and the third flow guide channel is connected with the liquid inlet hole and the cooling channel; A fourth flow guide channel is provided in the positioning shaft shoulder, and the fourth flow guide channel is connected with the liquid outlet and the cooling channel; The driving pump comprises: A pump housing, wherein a pump chamber for accommodating coolant is disposed inside the pump chamber, wherein the pump chamber is connected to the first channel and the third channel; A centrifugal pump wheel is rotatably disposed in the pump chamber, and the centrifugal pump wheel is connected to the rotor.

2. The high torque electric drive integrated direct drive motor according to claim 1, characterized in that: There are multiple first heat dissipation channels, and the multiple first heat dissipation channels are arranged at intervals along the axial direction of the housing; and / or there are multiple first guide channels, and the multiple first guide channels are arranged in a circular array around the first heat dissipation channel.

3. The high torque electric drive integrated direct drive motor according to claim 1, characterized in that: A plurality of the drainage holes are provided, and the plurality of the drainage holes are arranged at intervals along the extension direction of the second guide channel; and / or a plurality of the second guide channels are provided, and the plurality of the second guide channels are arranged at intervals around the installation cavity.

4. The high torque electric drive integrated direct drive motor according to claim 1, characterized in that: A plurality of cooling channels are provided, and the plurality of cooling channels are arranged at intervals around the central axis.

5. The high torque electric drive integrated direct drive motor according to claim 1, characterized in that: The heat dissipation structure comprises: A heat dissipation fin is arranged on the pump housing, one end of the heat dissipation fin extends into the pump cavity, and the other end extends to the outside of the pump housing; A transmission shaft, one end of which extends into the pump chamber and is coaxially connected to the rotor; The impeller is arranged on the transmission shaft.

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