Hybrid cooling motor and vehicle

Abstract

The invention relates to a hybrid cooling motor and a vehicle. The hybrid cooling motor includes: a housing; a stator assembly; the sleeve body is arranged between the stator assembly and the shell in a sleeving manner; a cooling medium runner through which a first cooling medium passes is arranged on one side, back on to the shell, of the sleeve body; the end cover is arranged on one side of the shell and covers the shell, the end cover is provided with a bearing chamber, and a bearing is arranged in the bearing chamber; the rotor assembly comprises a rotor support, and the rotor support is rotationally connected with the end cover through a bearing; a flow guide hole is formed in the rotor support so that the second cooling medium located in the rotor support can penetrate through the flow guide hole under the action of centrifugal force when the rotor support rotates. The scheme of common cooling of the first cooling medium and the second cooling medium is adopted, the first cooling medium on the outer surface of the stator assembly and the second cooling medium in the internal structure of the stator assembly and the rotor assembly are adopted, and the overall heat dissipation effect of the motor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric motors, in particular to a hybrid cooling electric motor and a vehicle. Background Art

[0002] As new energy vehicles have entered a stage of rapid development and fierce competition, the electric drive system is developing towards high electrical density, low magnetic density, high heat and high integration, and the requirements for the motor cooling system are becoming higher and higher.

[0003] In traditional technology, motor cooling adopts a water cooling solution in which cooling water is passed through the casing. The heat of the stator winding is transferred to the cooling water through the iron core and the motor casing. This is an indirect cooling for the motor stator winding. The stator end winding and the permanent magnets in the rotor are naturally cooled by copper wire and air, and the cooling effect is limited. Summary of the invention

[0004] Based on this, it is necessary to provide a hybrid cooling motor and vehicle to address the problem of poor motor cooling efficiency.

[0005] In a first aspect, the present application provides a hybrid cooling motor, the hybrid cooling motor comprising:

[0006] A shell body, wherein the shell body is provided with a liquid inlet pipe and a liquid outlet pipe penetrating therethrough;

[0007] A stator assembly is disposed in the housing;

[0008] A sleeve body is sleeved between the stator assembly and the housing, and is limited in rotation by the stator assembly; a cooling medium flow channel for passing a first cooling medium is arranged on a side of the sleeve body facing away from the housing, a first end of the cooling medium flow channel is connected to the liquid inlet pipe, and a second end of the cooling medium flow channel is connected to the liquid outlet pipe;

[0009] An end cover is arranged on one side of the housing and covers the housing, the end cover has a bearing chamber, and a bearing is arranged in the bearing chamber;

[0010] The rotor assembly comprises a rotor support, wherein the rotor support is rotatably connected to the end cover via the bearing; the rotor support is provided with a guide hole so that when the rotor support rotates, a second cooling medium located in the rotor support can pass through the guide hole under the action of centrifugal force.

[0011] In one embodiment, one of the sleeve and the stator assembly is provided with a first limiting groove, and the other is provided with a first limiting boss, and the first limiting groove cooperates with the first limiting boss to limit relative rotation of the sleeve and the stator assembly.

[0012] In one embodiment, a first sealing ring and a second sealing ring are provided on a side of the sleeve body facing away from the stator assembly, and the first sealing ring and the second sealing ring are arranged on a side of the cooling medium flow channel close to the end cover and a side away from the end cover.

[0013] In one of the embodiments, the end cover is provided with a collecting groove on one side of the bearing chamber, and the collecting groove is connected to the bearing chamber so that the cooling medium can flow from the collecting groove to the bearing chamber; the sleeve body is provided with a first collecting hole, and the bearing chamber is also provided with a second collecting hole.

[0014] In one of the embodiments, the slot area of ​​the collecting slot increases gradually in a direction away from the bearing chamber.

[0015] In one of the embodiments, the rotor support includes a rotor shaft and a rotor hub, the rotor hub is a cylindrical structure, the rotor shaft is fixedly connected to the inside of the rotor hub, and the rotor shaft is connected to the end cover through a bearing; the guide hole is opened on the surface of the rotor hub.

[0016] In one embodiment, the rotor assembly also includes a first dynamic balancing plate, a first rotor core, a diverter plate, a second rotor core and a second dynamic balancing plate which are sequentially mounted on the rotor bracket. The first rotor core and the second rotor core adopt a two-stage oblique pole arrangement and both contain multiple groups of permanent magnets.

[0017] In one embodiment, a second limiting groove is provided on the outside of the rotor bracket, and the first dynamic balancing plate, the first rotor core, the diverter plate, the second rotor core and the second dynamic balancing plate are all provided with a second limiting protrusion on the inside, and the second limiting protrusion is used to cooperate with the second limiting groove.

[0018] In one embodiment, the first dynamic balancing plate and the second dynamic balancing plate are both provided with a plurality of first guide grooves opening outward on one side facing the diverter plate, and the diverter plate is provided with a plurality of second guide grooves, and the positions of the first guide grooves and the second guide grooves correspond to each other.

[0019] In a second aspect, the present application also provides a vehicle, comprising the hybrid cooling motor.

[0020] In the above-mentioned hybrid cooling motor, a first cooling medium and a second cooling medium are used, wherein the first cooling medium can be water to form a water cooling circuit, and the second cooling medium can be oil to form an oil cooling circuit. The cooling circuit of the first cooling medium is located on the outer surface of the stator assembly. After the first cooling medium enters from the liquid inlet pipe, it passes through the grafted flow channel formed by the shell and the sleeve, and flows out from the liquid outlet pipe to achieve cooling of the stator assembly. At the same time, in order to reduce the internal temperature of the stator assembly, the second cooling medium splashes from the inside of the rotor bracket to the inner wall by centrifugal force, and flows to the stator assembly through the middle guide hole to achieve cooling and heat dissipation of the internal structure of the stator assembly. At the same time, the second cooling medium can also flow back into the rotor bracket to form a cooling circuit of the second cooling medium. The present invention adopts a solution of cooling the first cooling medium and the second cooling medium together, adopts the first cooling medium on the outer surface of the stator assembly, and adopts the second cooling medium in the internal structure of the stator assembly and the rotor assembly, thereby improving the overall heat dissipation effect of the motor on the basis of ensuring a simple structure, fewer parts, compact space, and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG. 1 is a schematic diagram of the structure of a hybrid cooling motor housing in one embodiment.

[0022] FIG. 2 is an exploded view of a casing and a stator assembly in one embodiment.

[0023] FIG. 3 is a schematic structural diagram of a rotor assembly in one embodiment.

[0024] FIG. 4 is a schematic diagram of the structure of an end cover in one embodiment.

[0025] FIG. 5 is an exploded view of a rotor assembly according to one embodiment.

[0026] Description of reference numerals:

[0027] 10. Shell; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Bolt hole; 20. Stator assembly; 21. Limiting boss; 30. Sleeve; 31. Cooling medium flow channel; 32. First limiting groove; 33. Step structure; 34. First sealing ring; 35. Second sealing ring; 36. Sealing ring groove; 37. First collecting hole; 40. End cover; 41. Bearing chamber; 42. Collecting groove; 43. Bearing; 50. Rotor assembly; 51. Rotor bracket; 511. Rotor shaft; 512. Rotor hub; 52. Guide hole; 53. First dynamic balancing plate; 531. First guide groove; 54. First rotor core; 541. Permanent magnet; 55. Diverter plate; 551. Second guide groove; 56. Second rotor core; 57. Second dynamic balancing plate; 571. Second limiting boss; 58. Positioning flange; 59. Second limiting groove. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] Referring to Figures 1 and 2, Figure 1 shows a schematic diagram of the structure of a housing 10 in a hybrid cooling motor in an embodiment of the present invention, and Figure 2 shows an exploded view of a sleeve 30 and a stator assembly 20 in an embodiment of the present invention. A hybrid cooling motor provided in an embodiment of the present invention comprises a housing 10, a stator assembly 20, a sleeve 30, an end cover 40 and a rotor assembly 50, wherein the housing 10 serves as an external protective shell, the stator assembly 20, the sleeve 30 and the rotor assembly 50 are all arranged in the housing 10, and the end cover 40 is arranged on one side of the housing 10, so as to shield the internal structure of the housing 10.

[0035] The shell 10 has a plurality of connecting bolt holes 13 on one side thereof, and the inner wall of the shell 10 is a smooth inner circle. Exemplarily, the stator assembly 20 can be connected to the shell 10 by bolts to achieve connection with the shell 10. A cooling medium flow channel 31 is formed between the outer surface of the stator assembly 20 and the inner surface of the shell 10 as a passage for the first cooling medium. Optionally, the first cooling medium can be water. The shell 10 is provided with a liquid inlet pipe 11 and a liquid outlet pipe 12 that penetrate through the shell 10, so that the first cooling medium can enter between the shell 10 and the stator assembly 20 from the liquid inlet pipe 11, flow between the shell 10 and the stator assembly 20 to cool the stator assembly 20, and then flow out from the liquid outlet pipe 12. Exemplarily, the stator assembly 20 includes a stator core and a stator winding. The stator winding is the part where the conductive coil is wound on the stator core, and its main function is to generate a rotating magnetic field.

[0036] The sleeve 30 is sleeved between the stator assembly 20 and the housing 10, specifically, sleeved on the stator assembly 20, and is restricted from rotating by the stator assembly 20. A cooling medium flow channel 31 for passing the first cooling medium is arranged on the side of the sleeve 30 facing away from the housing 10, and the first end of the cooling medium flow channel 31 is connected to the liquid inlet pipe 11, and the second end of the cooling medium flow channel 31 is connected to the liquid outlet pipe 12. In this way, the first cooling medium enters the cooling medium flow channel 31 from the liquid inlet pipe 11, flows in the cooling medium flow channel 31, and is discharged from the liquid outlet pipe 12. When the first cooling medium flows in the cooling medium flow channel 31, the stator assembly 20 can be cooled.

[0037] The end cover 40 is disposed on one side of the housing 10 and covers the housing 10, and plays a role in shielding the housing 10 and supporting the rotor assembly 50. The end cover 40 has a bearing chamber 41, and a bearing 43 is disposed in the bearing chamber 41. The rotor assembly 50 includes a rotor bracket 51, and the rotor bracket 51 is rotatably connected to the end cover 40 through the bearing 43. In this way, the rotor assembly 50 is rotatably connected through the bearing 43, and the rotor assembly 50 is disposed inside the stator assembly 20 and is coaxial with the stator assembly 20.

[0038] Referring to FIG. 3 , FIG. 3 shows a schematic diagram of the structure of a rotor assembly 50 in an embodiment. The rotor assembly 50 includes a rotor support 51, and the rotor support 51 is provided with a guide hole 52, so that when the rotor support 51 rotates, the second cooling medium located in the rotor support 51 can pass through the guide hole 52 under the action of centrifugal force. Exemplarily, the second cooling medium can be oil to achieve oil cooling. When the second cooling medium is located in the rotor support 51, the rotation of the hybrid cooling motor will drive the second cooling medium to flow therewith. When the speed is high, the second cooling medium flows out of the rotor support 51 from the guide hole 52 under the action of centrifugal force, and can at least partially flow to the stator assembly 20, thereby cooling the stator core and stator winding of the stator assembly 20.

[0039] In the above-mentioned hybrid cooling motor, a first cooling medium and a second cooling medium are used, wherein the first cooling medium can be water to form a water cooling circuit, and the second cooling medium can be oil to form an oil cooling circuit. The cooling circuit of the first cooling medium is located on the outer surface of the stator assembly 20. After the first cooling medium enters from the liquid inlet pipe 11, it passes through the grafted flow channel formed by the shell 10 and the sleeve 30, and flows out from the liquid outlet pipe 12 to achieve cooling of the stator assembly 20. At the same time, in order to reduce the internal temperature of the stator assembly 20, the second cooling medium splashes from the inside of the rotor bracket 51 to the inner wall by centrifugal force, and flows to the stator assembly 20 through the middle guide hole 52, so as to achieve cooling and heat dissipation of the internal structure of the stator assembly 20. At the same time, the second cooling medium can also flow back into the rotor bracket 51 to form a cooling circuit of the second cooling medium. The present invention adopts a solution of cooling the first cooling medium and the second cooling medium together, adopts the first cooling medium on the outer surface of the stator assembly 20, and adopts the second cooling medium in the internal structure of the stator assembly 20 and the rotor assembly 50, so as to improve the overall heat dissipation effect of the motor on the basis of ensuring simple structure, less parts, compact space and easy implementation.

[0040] Continuing to refer to FIG. 2 , in some embodiments, one of the sleeve 30 and the stator assembly 20 is provided with a first limiting groove 32, and the other is provided with a first limiting boss 21, and the first limiting groove 32 cooperates with the first limiting boss 21 to limit the relative rotation of the sleeve 30 and the stator assembly 20. Exemplarily, the outer surface of the stator assembly 20 is provided with one or more first limiting bosses 21, and the inner surface of the sleeve 30 is correspondingly provided with the same number of first limiting grooves 32, and the first limiting boss 21 can extend into the first limiting grooves 32 for limiting. Optionally, the stator assembly 20 and the water jacket are interference-fitted to improve the limiting effect. In addition, the sleeve 30 can also be provided with a step structure 33, which is used for axial positioning of the stator assembly 20 to avoid interference between the stator assembly 20 and the end cover 40.

[0041] Exemplarily, a first sealing ring 34 and a second sealing ring 35 are provided on the side of the sleeve 30 facing away from the stator assembly 20, and the first sealing ring 34 and the second sealing ring 35 are arranged on the side of the cooling medium flow channel 31 close to the end cover 40 and the side away from the end cover 40. The first sealing ring 34 and the second sealing ring 35 are used to limit the first cooling medium in the cooling medium flow channel 31 to prevent the first cooling medium from flowing into the motor through the gap.

[0042] Furthermore, the sleeve 30 may have sealing ring grooves 36 on both the side close to the end cover 40 and the side away from the end cover 40, so that the first sealing ring 34 and the second sealing ring 35 are respectively accommodated in the two sealing ring grooves 36 to improve the sealing effect on the first cooling medium.

[0043] Optionally, the end cover 40 may be a flange connected to the housing 10 by bolts. Referring to FIG. 4 , FIG. 4 shows a perspective view of the end cover 40 in one embodiment. In some embodiments, the end cover 40 is provided with a collecting groove 42 on one side of the bearing chamber 41, and the collecting groove 42 is communicated with the bearing chamber 41 so that the cooling medium can flow from the collecting groove 42 to the bearing chamber 41. Exemplarily, the end cover 40 is provided with a collecting groove 42 radially along the bearing chamber 41 toward the inside, so that the second cooling medium flowing out of the stator assembly 20 can be collected by the collecting groove 42 and then flow into the bearing chamber 41. The sleeve 30 is provided with a first collecting hole 37, wherein the first collecting hole 37 is located on a side away from the cooling medium flow channel 31, isolated from the cooling circuit of the first cooling medium, and can collect the second cooling medium splashed between the sleeve 30 and the housing 10, and the bearing chamber 41 is also provided with a second collecting hole, which is communicated with the collecting groove 42, so that the second cooling medium in the collecting groove 42 can flow back to the bearing chamber 41, forming a complete second cooling medium circuit.

[0044] In a feasible implementation, the slot area of ​​the collecting groove 42 increases in sequence in the direction away from the bearing chamber 41. In this way, a larger area of ​​the second cooling medium can be collected, and the slot area of ​​the collecting groove 42 close to the bearing chamber 41 is smaller, which can ensure that the second cooling medium flows back to the bearing chamber 41. Exemplarily, the collecting groove 42 can be a V-shaped structure, and the side with a larger opening is away from the bearing chamber 41. The second cooling medium splashed onto the inner wall of the sleeve 30 can be collected by the collecting groove 42.

[0045] Continuing to refer to FIG. 3 , in some embodiments, the rotor support 51 includes a rotor shaft 511 and a rotor hub 512. The rotor hub 512 is a cylindrical structure, which supports and connects the rotor shaft 511. The rotor shaft 511 can be used as an output drive shaft. The rotor shaft 511 is fixedly connected to the inside of the rotor hub 512, and the rotor shaft 511 is connected to the end cover 40 through a bearing 43. A guide hole 52 is provided on the surface of the rotor hub 512. When the rotor support 51 has a second cooling medium, during high-speed rotation, the second cooling medium can flow from the guide hole 52 on the rotor hub 512 to the outside of the rotor support 51, thereby cooling the stator core and stator winding in the stator assembly 20.

[0046] Referring to FIG. 5 , FIG. 5 shows an exploded view of a rotor assembly 50 in an embodiment, wherein the rotor assembly 50 further includes a first dynamic balancing plate 53, a first rotor core 54, a diverter plate 55, a second rotor core 56, and a second dynamic balancing plate 57 which are sequentially sleeved on a rotor bracket 51. Exemplarily, the rotor bracket 51 is a cylindrical structure, the first side of the rotor bracket 51 is sealed, the rotor shaft 511 is arranged at the inner axis of the first side, a positioning flange 58 is arranged along the edge of the second side of the rotor bracket 51, and the first dynamic balancing plate 53 is close to the positioning flange 58. The first rotor core 54, the diverter plate 55, the second rotor core 56, and the second dynamic balancing plate 57 are sequentially arranged in a direction away from the positioning flange 58, and the bearing 43 is arranged at the outer axis of the first side to be configured in the bearing chamber 41, and is rotatably connected to the end cover 40 through the bearing 43. Among them, the first rotor core 54 and the second rotor core 56 adopt a two-stage oblique pole arrangement, and both contain multiple groups of permanent magnets 541.

[0047] In order to connect the first dynamic balancing plate 53, the first rotor core 54, the diverter plate 55, the second rotor core 56 and the second dynamic balancing plate 57 to the rotor bracket 51 and limit their rotation, a second limiting groove 59 is opened on the outside of the rotor bracket 51, such as opening a second limiting groove 59 on the outside of the rotor hub 512, and the first dynamic balancing plate 53, the first rotor core 54, the diverter plate 55, the second rotor core 56 and the second dynamic balancing plate 57 are all internally provided with a second limiting protrusion 571, and the second limiting protrusion 571 is used to cooperate with the second limiting groove 59.

[0048] In this way, by cooperating with the second limiting protrusion 571 and the second limiting groove 59, the positioning of the rotor bracket 51 in the circumferential direction is achieved, so that the first dynamic balancing plate 53, the first rotor core 54, the diverter plate 55, the second rotor core 56 and the second dynamic balancing plate 57 are restricted from rotating.

[0049] The first dynamic balancing plate 53 and the second dynamic balancing plate 57 are both provided with a plurality of first guide grooves 531 opening outward on one side facing the diverter plate 55, and the diverter plate 55 is provided with a plurality of second guide grooves 551, and the first guide grooves 531 and the second guide grooves 551 are located in correspondence with each other. Furthermore, the first rotor core 54 and the second rotor core 56 are both provided with U-shaped guide grooves, and the first guide grooves 531 of the first dynamic balancing plate 53 and the second dynamic balancing plate 57, the second guide grooves 551 of the diverter plate 55, and the U-shaped guide grooves of the first rotor core 54 and the second rotor core 56 are all corresponding, so that the second cooling medium can flow in each guide groove to achieve cooling of each structure.

[0050] Exemplarily, the first cooling medium may be water, and the second cooling medium may be oil. For example, the first cooling medium is cooling water to form a water cooling circuit, and the second cooling medium is cooling oil to form an oil cooling circuit. The water cooling circuit is located on the outer surface of the stator assembly 20. After the cooling water enters from the liquid inlet pipe 11, it passes through the C-shaped water channel formed by the motor housing 10 and the sleeve 30, and flows out from the liquid outlet pipe 12 to achieve water cooling of the stator assembly 20. At the same time, in order to reduce the temperature of the end winding of the stator assembly 20 and the temperature of the rotor permanent magnet 541, the cooling lubricating oil is splashed from the middle of the rotor shaft 511 to the inner wall of the rotor hub 512 by the centrifugal force of the rotor rotation, and flows into the diverter plate 55 through the middle guide hole 52, and then flows through the cavity formed by the permanent magnet 541 and the iron core magnetic steel groove by the splashing pressure, and stays in the first guide groove 531 of the first dynamic balance plate 53 and the second dynamic balance plate 57 at both ends of the iron core, and then splashed to the stator end winding by centrifugal force to achieve cooling and heat dissipation of the permanent magnet 541 and the stator end winding. Part of the cooling oil splashed to the inner wall of the sleeve 30 flows into the bearing chamber 41 through the V-shaped collection groove 42 under the action of gravity to lubricate the bearing 43, and further flows to the guide hole 52 at the bottom of the sleeve 30, and flows into the oil cooling system to form an oil cooling circuit.

[0051] In some embodiments, a vehicle is further provided, the vehicle comprising the hybrid cooling motor according to any one of the above embodiments.

[0052] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hybrid cooling motor, characterized in that: The hybrid cooling motor comprises: A shell body, wherein the shell body is provided with a liquid inlet pipe and a liquid outlet pipe penetrating therethrough; A stator assembly is disposed in the housing; A sleeve body is sleeved between the stator assembly and the housing, and is limited in rotation by the stator assembly; a cooling medium flow channel for passing a first cooling medium is arranged on a side of the sleeve body facing away from the housing, a first end of the cooling medium flow channel is connected to the liquid inlet pipe, and a second end of the cooling medium flow channel is connected to the liquid outlet pipe; An end cover is arranged on one side of the housing and covers the housing, the end cover has a bearing chamber, and a bearing is arranged in the bearing chamber; The rotor assembly comprises a rotor support, wherein the rotor support is rotatably connected to the end cover via the bearing; the rotor support is provided with a guide hole so that when the rotor support rotates, a second cooling medium located in the rotor support can pass through the guide hole under the action of centrifugal force.

2. The hybrid cooling motor according to claim 1, characterized in that: One of the sleeve and the stator assembly is provided with a first limiting groove, and the other is provided with a first limiting boss. The first limiting groove cooperates with the first limiting boss to limit the relative rotation of the sleeve and the stator assembly.

3. The hybrid cooling motor according to claim 1, characterized in that: A first sealing ring and a second sealing ring are provided on a side of the sleeve body facing away from the stator assembly. The first sealing ring and the second sealing ring are arranged on a side of the cooling medium flow channel close to the end cover and a side away from the end cover.

4. The hybrid cooling motor according to claim 1, characterized in that: The end cover is provided with a collecting groove on one side of the bearing chamber, and the collecting groove is communicated with the bearing chamber so that the cooling medium can flow from the collecting groove to the bearing chamber; the sleeve body is provided with a first collecting hole, and the bearing chamber is also provided with a second collecting hole.

5. The hybrid cooling motor according to claim 4, characterized in that: The slot area of ​​the collecting slot increases gradually in a direction away from the bearing chamber.

6. The hybrid cooling motor according to claim 1, characterized in that: The rotor bracket comprises a rotor shaft and a rotor hub. The rotor hub is a cylindrical structure. The rotor shaft is fixedly connected to the inside of the rotor hub. The rotor shaft is connected to the end cover through a bearing. The guide hole is opened on the surface of the rotor hub.

7. The hybrid cooling motor according to claim 1, characterized in that: The rotor assembly also includes a first dynamic balancing plate, a first rotor core, a shunt plate, a second rotor core and a second dynamic balancing plate which are sequentially sleeved on the rotor bracket. The first rotor core and the second rotor core are arranged in two sections of oblique poles and both contain multiple groups of permanent magnets.

8. The hybrid cooling motor according to claim 7, characterized in that: A second limiting groove is provided on the outside of the rotor bracket, and a second limiting protrusion is provided on the inside of the first dynamic balancing plate, the first rotor core, the diverter plate, the second rotor core and the second dynamic balancing plate, and the second limiting protrusion is used to cooperate with the second limiting groove.

9. The hybrid cooling motor according to claim 7, characterized in that: The first dynamic balancing plate and the second dynamic balancing plate are both provided with a plurality of first guide grooves opening outward on one side facing the diverter plate, and the diverter plate is provided with a plurality of second guide grooves, and the positions of the first guide grooves and the second guide grooves correspond to each other.

10. A vehicle, characterized in that: The vehicle comprises the hybrid-cooled electric machine according to any one of claims 1-9.

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