Motor, electric drive system and vehicle

Abstract

The utility model discloses a motor, an electric drive system and a vehicle, and belongs to the technical field of automobiles, the motor comprises a rotating shaft, the rotating shaft is internally provided with a liquid supply channel, and the peripheral surface of the rotating shaft is provided with a liquid supply port communicated with the liquid supply channel; the rotor core is arranged on the peripheral surface of the rotating shaft in a sleeving manner; the rotor partition plate is arranged on the peripheral face of the rotating shaft in a sleeving mode and located at the axial end of the rotor iron core, a liquid guide groove is formed in the end face, away from the rotor iron core, of the rotor partition plate and communicated with the liquid supply opening, and the included angle alpha 1 between the extending direction of the groove bottom wall of the liquid guide groove and the radial direction of the rotating shaft is larger than or equal to 0 degree and smaller than or equal to 60 degrees. According to the motor of the utility model, the cooling effect of the motor can be ensured to be good, the dynamic balance of the rotor core is good, and the working reliability of the motor is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and more specifically, to a motor, an electric drive system and a vehicle. Background Art

[0002] In the related art, during the operation of the motor, the motor has problems such as rapid heating and excessive heating, which can easily affect the normal operation of the motor and reduce the service life of the motor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a motor, which can ensure good cooling effect of the motor and good dynamic balance of the rotor core, thereby ensuring reliable operation of the motor.

[0004] Another object of the present invention is to provide an electric drive system having the above motor.

[0005] Another object of the present invention is to provide a vehicle having the above electric drive system.

[0006] According to the embodiment of the utility model, the motor includes: a rotating shaft, wherein the rotating shaft has a liquid supply channel, and the outer peripheral surface of the rotating shaft is provided with a liquid supply port connected with the liquid supply channel; a rotor core, wherein the rotor core is sleeved on the outer peripheral surface of the rotating shaft; a rotor partition, wherein the rotor partition is sleeved on the outer peripheral surface of the rotating shaft and is located at the axial end of the rotor core, and the end surface of the rotor partition away from the rotor core is provided with a liquid guide groove, and the liquid guide groove is connected with the liquid supply port, wherein the angle between the extension direction of the bottom wall of the liquid guide groove and the radial direction of the rotating shaft is α1 and satisfies: 0°≤α1≤60°.

[0007] According to the motor of the embodiment of the utility model, the rotor partition is located at the axial end of the rotor core, and a liquid guide groove is provided on the end surface of the rotor partition away from the rotor core, and the liquid guide groove is connected to the liquid supply port of the rotating shaft, so that the medium in the liquid supply channel of the rotating shaft can cool the rotor core and other structures of the motor through the liquid supply port and the liquid guide groove, ensuring a good cooling effect of the motor and improving the heat dissipation efficiency of the motor, and the liquid guide groove is located on the end surface of the rotor partition away from the rotor core, which can avoid the problem of the medium accumulating between the rotor partition and the rotor core and causing the dynamic balance of the rotor core to deteriorate, ensuring the dynamic balance of the rotor core is good, thereby ensuring the reliable operation of the motor. In addition, the angle between the extension direction of the bottom wall of the liquid guide groove and the radial direction of the rotating shaft is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guide groove can reliably guide the medium, so that the medium flows smoothly, which is conducive to improving the heat dissipation efficiency.

[0008] In addition, the motor according to the above embodiment of the utility model may also have the following additional technical features:

[0009] According to the motor of some embodiments of the present utility model, the liquid guiding groove extends along the radial direction of the rotor partition.

[0010] According to some embodiments of the present invention, in a direction from the radial inner side to the radial outer side of the rotor partition plate, the bottom wall of the liquid guide groove extends obliquely in a direction away from the rotor core.

[0011] According to some embodiments of the present invention, α1 satisfies: 0°<α1≤30°.

[0012] According to some embodiments of the present invention, the end surface of the rotor partition away from the rotor core is formed as a predetermined end surface, and the bottom wall of the liquid guide groove at one end away from the rotating shaft extends to the predetermined end surface.

[0013] According to some embodiments of the present invention, one end of the liquid guiding groove away from the rotating shaft is spaced apart from the outer peripheral wall of the rotor partition.

[0014] According to some embodiments of the present invention, the width of the liquid guiding groove is greater than or equal to the aperture of the liquid supply port.

[0015] According to some embodiments of the present invention, the widths of two opposite groove side walls of the liquid guiding groove gradually increase from the radial inner side to the radial outer side of the rotor partition.

[0016] According to some embodiments of the present invention, the angle between two opposite edges in the width direction of the liquid guiding groove is α2 and satisfies: 0°<α2≤90°.

[0017] According to some embodiments of the present invention, α2 satisfies: 3°≤α2≤15°.

[0018] According to some embodiments of the present invention, the liquid supply port and the liquid guide groove are opposite to each other along the radial direction of the rotor partition.

[0019] According to some embodiments of the present utility model, the liquid supply ports are multiple and evenly spaced along the circumferential direction of the rotating shaft, and the liquid guiding grooves are multiple and correspond one to one to the multiple liquid supply ports.

[0020] According to some embodiments of the present invention, the aperture of the liquid supply port is 1mm-4mm; and / or the maximum depth of the liquid guide groove is 0.2mm-10mm; and / or the minimum width of the liquid guide groove is 1mm-10mm.

[0021] According to some embodiments of the present invention, the rotor partition includes a first partition and a second partition, and the first partition and the second partition are respectively arranged at two ends of the rotor core in the axial direction.

[0022] According to some embodiments of the present invention, the first partition plate and the second partition plate have the same structure and / or size.

[0023] According to some embodiments of the present invention, the liquid supply ports are divided into two groups spaced apart along the axial direction of the rotating shaft, and the liquid guide grooves of the first partition plate and the second partition plate are respectively connected to the two groups of liquid supply ports.

[0024] According to some embodiments of the utility model, the two groups of liquid supply ports are staggered along the circumferential direction of the rotating shaft; or, the two groups of liquid supply ports are arranged opposite to each other along the axial direction of the rotating shaft.

[0025] The electric drive system according to the embodiment of the utility model includes the motor according to the embodiment of the utility model.

[0026] According to the electric drive system of the embodiment of the utility model, the rotor partition is located at the axial end of the rotor core, and a liquid guide groove is provided on the end surface of the rotor partition away from the rotor core, and the liquid guide groove is connected to the liquid supply port of the rotating shaft, so that the medium in the liquid supply channel of the rotating shaft can cool the rotor core and other structures of the motor through the liquid supply port and the liquid guide groove, ensuring a good cooling effect of the motor and improving the heat dissipation efficiency of the motor, and the liquid guide groove is located on the end surface of the rotor partition away from the rotor core, which can avoid the problem of medium accumulation between the rotor partition and the rotor core causing the dynamic balance of the rotor core to deteriorate, ensuring the dynamic balance of the rotor core is good, thereby ensuring the reliable operation of the motor. In addition, the angle between the extension direction of the bottom wall of the liquid guide groove and the radial direction of the rotating shaft is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guide groove can reliably guide the medium, so that the medium flows smoothly, which is conducive to improving the heat dissipation efficiency.

[0027] The vehicle according to the embodiment of the utility model includes the motor according to the embodiment of the utility model, or includes the electric drive system according to the embodiment of the utility model.

[0028] According to the vehicle of the embodiment of the utility model, the rotor partition is located at the axial end of the rotor core, and a liquid guide groove is provided on the end surface of the rotor partition away from the rotor core, and the liquid guide groove is connected to the liquid supply port of the rotating shaft, so that the medium in the liquid supply channel of the rotating shaft can cool the rotor core and other structures of the motor through the liquid supply port and the liquid guide groove, ensuring a good cooling effect of the motor and improving the heat dissipation efficiency of the motor. The liquid guide groove is located on the end surface of the rotor partition away from the rotor core, which can avoid the problem of the medium accumulating between the rotor partition and the rotor core and causing the dynamic balance of the rotor core to deteriorate, ensuring the dynamic balance of the rotor core, thereby ensuring the reliable operation of the motor. In addition, the angle between the extension direction of the bottom wall of the liquid guide groove and the radial direction of the rotating shaft is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guide groove can reliably guide the medium, so that the medium flows smoothly, which is conducive to improving the heat dissipation efficiency.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a cross-sectional view of a motor according to an embodiment of the utility model;

[0032] Figure 2 It is a schematic structural diagram of a rotor partition of a motor according to an embodiment of the utility model;

[0033] Figure 3 is a cross-sectional view of a rotor partition of a motor according to an embodiment of the utility model;

[0034] Figure 4 It is a schematic structural diagram of the rotating shaft of the motor according to an embodiment of the utility model.

[0035] Reference numerals:

[0036] 100. Motor;

[0037] 10. Rotating shaft; 11. Liquid supply channel; 12. Liquid supply port;

[0038] 20. Rotor core;

[0039] 30, rotor partition; 31, liquid guide groove; 301, first partition; 302, second partition;

[0040] 41. stator core; 42. winding;

[0041] 50. Reducer shaft. DETAILED DESCRIPTION

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] 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 a limitation on the present invention.

[0044] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature may include the first feature being directly above and diagonally above the second feature, or may simply mean that the first feature is at a higher level than the second feature.

[0045] The motor 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] Reference Figure 1-Figure 4 As shown, the motor 100 according to the embodiment of the present invention may include: a rotating shaft 10 , a rotor core 20 and a rotor partition 30 .

[0047] Specifically, the rotor core 20 and the rotor diaphragm 30 are both sleeved on the outer circumferential surface of the rotating shaft 10, and the rotor diaphragm 30 is located in the axial direction of the rotor core 20 (for example Figure 1 The rotor partition plate 30 can prevent the magnetic field generated on the rotor core 20 from leaking, thereby ensuring the normal operation of the motor 100.

[0048] In addition, if Figure 1-Figure 4As shown, the rotating shaft 10 has a liquid supply channel 11, and a liquid supply port 12 is provided on the outer peripheral surface of the rotating shaft 10, and the liquid supply port 12 is connected to the liquid supply channel 11. The end surface of the rotor partition 30 away from the rotor core 20 is provided with a liquid guide groove 31, and the liquid guide groove 31 is connected to the liquid supply port 12. Therefore, the medium in the liquid supply channel 11 (for example, the medium can be cooling oil or water, etc.) can enter the liquid guide groove 31 through the liquid supply port 12, and the medium can cool the rotor core 20 and other structures of the motor 100 (for example, the stator core 41 and the winding 42 of the motor 100, etc.) through the guidance of the liquid guide groove 31, so as to ensure a good cooling effect of the motor 100, improve the heat dissipation efficiency of the motor 100, ensure the normal use of the motor 100, and help to extend the service life of the motor 100.

[0049] In the related art, the cooling scheme of the motor is to let oil enter from the inner hole of the shaft, and the oil enters the radial oil groove at the bottom of the magnetic isolation plate from the radial oil hole of the shaft and sprays to the root of the end winding. Since the oil is radially sprayed from the oil groove at the bottom of the magnetic isolation plate, oil is easily stored in the oil groove, which causes the dynamic balance of the rotor core to deteriorate. In the present utility model, the liquid guide groove 31 is located on the end face of the rotor partition 30 away from the rotor core 20, so that the medium can be prevented from accumulating in the liquid guide groove 31, that is, the medium can be prevented from accumulating between the rotor partition 30 and the rotor core 20, which causes the dynamic balance of the rotor core 20 to deteriorate, and other problems, thereby ensuring that the dynamic balance of the rotor core 20 is good, thereby ensuring the reliable operation of the motor 100.

[0050] In addition, if Figure 3 As shown, the angle between the extension direction of the bottom wall of the liquid guiding groove 31 and the radial direction of the rotating shaft 10 is α1, and α1 satisfies: 0°≤α1≤60°. Within the above range, the liquid guiding groove 31 can ensure reliable guidance of the medium and smooth flow of the medium, which is conducive to improving the heat dissipation efficiency. For example, in some specific embodiments, the angle between the extension direction of the bottom wall of the liquid guiding groove 31 and the radial direction of the rotating shaft 10 can be 0°, 5°, 10°, 20°, 30°, 40°, 50°, 60°, etc.

[0051] It should be noted that, for the convenience of description, the directions such as "left" and "right" in the present invention are based on the direction relationship shown in the accompanying drawings, and are not limitations on the directions in actual application.

[0052] According to the motor 100 of the embodiment of the utility model, the rotor partition 30 is located at the axial end of the rotor core 20, and a liquid guide groove 31 is provided on the end surface of the rotor partition 30 away from the rotor core 20. The liquid guide groove 31 is connected with the liquid supply port 12 of the rotating shaft 10, so that the medium in the liquid supply channel 11 of the rotating shaft 10 can cool the rotor core 20 and other structures of the motor 100 through the liquid supply port 12 and the liquid guide groove 31, thereby ensuring a good cooling effect of the motor 100 and improving the heat dissipation efficiency of the motor 100. The liquid guide groove 31 is located on the end surface of the rotor partition 30 away from the rotor core 20, which can avoid the medium from accumulating between the rotor partition 30 and the rotor core 20, resulting in problems such as deterioration of the dynamic balance of the rotor core 20, thereby ensuring a good dynamic balance of the rotor core 20, thereby ensuring reliable operation of the motor 100. In addition, the angle between the extension direction of the bottom wall of the liquid guiding groove 31 and the radial direction of the rotating shaft 10 is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guiding groove 31 can reliably guide the medium, allowing the medium to flow smoothly, which is beneficial to improving the heat dissipation efficiency.

[0053] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the liquid guiding groove 31 extends along the radial direction of the rotor partition 30, which facilitates the medium to flow out of the liquid guiding groove 31 and ensures smooth flow of the medium, thereby reliably cooling the rotor core 20 and other structures of the motor 100, and facilitating the processing and manufacturing of the liquid guiding groove 31, which is beneficial to reducing production costs.

[0054] In the embodiment of the present utility model, the specific structure of the liquid guiding groove 31 can be set according to actual conditions.

[0055] For example, in some embodiments, the bottom wall of the liquid-conducting groove 31 and the extending direction of the rotating shaft 10 (for example Figure 1 ), that is, the liquid guiding groove 31 can be formed as a flat-bottomed groove, which can meet different setting requirements of the liquid guiding groove 31 and facilitate the processing and manufacturing of the liquid guiding groove 31.

[0056] For example, in some embodiments, Figure 1 and Figure 3 As shown, in the direction from the radial inner side to the radial outer side of the rotor partition 30, the bottom wall of the liquid guide groove 31 extends obliquely in the direction away from the rotor core 20, that is, the liquid guide groove 31 can be formed as an inclined groove, so that the medium can change the medium path through the guidance of the bottom wall of the liquid guide groove 31, so that the medium can be sprayed to the inner end of the winding 42 of the motor 100 through the inclination angle of the bottom wall of the liquid guide groove 31, and the flow resistance of the medium is small, ensuring that the medium cools the winding 42 reliably. For example, the flow path of the medium is as follows Figure 1 Indicated by the arrow.

[0057] According to some embodiments of the present invention, Figure 3As shown, α1 satisfies: 0°<α1≤30°. Within the above range, the bottom wall of the liquid guide groove 31 can be extended in a direction away from the rotor core 20, ensuring reliable guidance of the medium and smooth flow of the medium, which is conducive to improving heat dissipation efficiency. For example, in some specific embodiments, α1 can be 1°, 5°, 10°, 15°, 20°, 25°, 30°, etc.

[0058] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the end face of the rotor partition 30 away from the rotor core 20 is formed as a predetermined end face, and the bottom wall of the liquid guide groove 31 at one end away from the rotating shaft 10 extends to the predetermined end face, so that the medium flows smoothly in the liquid guide groove 31, avoiding obstruction to the medium, ensuring reliable flow of the medium, and having a good guiding effect on the medium, ensuring reliable cooling.

[0059] In the related art, the oil spray hole used for cooling the motor is relatively small, and the oil flowing out of the oil spray hole is easy to damage the insulation layer of the winding. Therefore, according to some embodiments of the utility model, such as Figure 1-Figure 3 As shown, the end of the liquid guiding groove 31 away from the rotating shaft 10 is separated from the outer peripheral wall of the rotor partition 30, which can increase the distance between the end of the liquid guiding groove 31 away from the rotating shaft 10 and the winding 42, thereby avoiding that the distance between the liquid guiding groove 31 and the winding 42 is too close and causing the winding 42 to be subjected to a large impact force, thereby avoiding damage to the insulation layer of the winding 42 and ensuring the safety of the motor 100.

[0060] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the width of the liquid guiding groove 31 is greater than or equal to the aperture of the liquid supply port 12, that is, the width of the liquid guiding groove 31 is L2, and the aperture of the liquid supply port 12 is Φ, satisfying: Φ≤L2, so that the medium can flow smoothly from the liquid supply port 12 into the liquid guiding groove 31, ensuring smooth flow of the medium and avoiding obstruction to the flow of the medium, thereby ensuring a good cooling effect.

[0061] In the related art, the spraying part of the motor is mainly concentrated on the straight line section at the root of the winding, and cannot be sprayed to the end of the winding, resulting in poor cooling effect. Therefore, according to some embodiments of the utility model, such as Figure 2 As shown, from the radial inner side to the radial outer side of the rotor partition 30, the width of the two opposite groove side walls of the liquid guiding groove 31 gradually increases, so that the liquid guiding groove 31 has an opening angle characteristic, and the medium can gradually diffuse and diverge during the flow process, increasing the spray area, thereby increasing the spray area of ​​the medium on the inner side of the end of the winding 42, which is beneficial to improving the heat dissipation efficiency.

[0062] In some embodiments of the present invention, Figure 2As shown, the angle between the two opposite edges in the width direction of the liquid guiding groove 31 is α2, and α2 satisfies: 0°<α2≤90°. Within the above range, the liquid guiding groove 31 can have an opening angle feature, which is convenient for the medium to diffuse and diverge during the flow process and increase the liquid spraying area. For example, in some specific embodiments, the angle between the two opposite groove side walls of the liquid guiding groove 31 can be 1°, 5°, 10°, 30°, 50°, 70°, 90°, etc.

[0063] In some embodiments, α2 satisfies: 3°≤α2≤15°, so that the medium can be sprayed to the middle of the winding 42 and diffused in the middle of the winding 42, which can ensure that the medium diffuses over a larger range and avoid affecting the cooling effect of the oil sprayed from the stator core 41 on the top of the winding 42. For example, in some specific embodiments, α2 can be 3°, 5°, 8°, 10°, 13°, 15°, etc.

[0064] It should be noted that the “middle position of the winding 42 ” here can be understood as: along the radial direction of the rotating shaft 10 , the middle position of the winding 42 is formed between the outer peripheral surface of the winding 42 close to the rotor core 20 and the outer peripheral surface away from the rotor core 20 .

[0065] According to some embodiments of the present invention, Figure 1 As shown, the liquid supply port 12 and the liquid guide groove 31 are opposite to each other along the radial direction of the rotor partition 30, so that the medium can flow smoothly from the liquid supply port 12 into the liquid guide groove 31, ensuring smooth flow of the medium and avoiding obstruction to the flow of the medium, thereby ensuring a good cooling effect.

[0066] In some embodiments of the present invention, Figure 1 As shown, there are multiple liquid supply ports 12, and the multiple liquid supply ports 12 are spaced apart along the circumferential direction of the rotating shaft 10. There are multiple liquid guide grooves 31, and the multiple liquid guide grooves 31 correspond one-to-one to the multiple liquid supply ports 12. The medium in the liquid supply channel 11 can flow into the multiple liquid guide grooves 31 respectively through the multiple liquid supply ports 12, and the medium flows out through the multiple liquid guide grooves 31 at different positions, which can increase the outflow of the medium and the heat dissipation area, thereby ensuring a good cooling effect of the motor 100.

[0067] In some embodiments, the number of the liquid supply ports 12 is greater than or equal to 2 and less than or equal to 8, which can increase the outflow of the medium and the heat dissipation area while ensuring the structural strength of the shaft 10 and ensuring that the structural strength of the shaft 10 is reliable.

[0068] In the embodiment of the present invention, the number of the liquid supply ports 12 can be flexibly set according to actual conditions. For example, the liquid supply ports 12 can be Figure 1Two are shown, but three, four, five, six, seven, eight or more may also be provided, all of which are within the protection scope of the present utility model.

[0069] According to some embodiments of the present invention, Figure 1 As shown, multiple liquid supply ports 12 are evenly distributed along the circumferential direction of the rotating shaft 10, which can ensure uniform outflow of the medium, is beneficial to improving the heat dissipation effect, and avoids problems such as uneven force on the rotor core 20 causing rotation deviation, thereby ensuring good dynamic balance of the rotor core 20.

[0070] In some embodiments, Figure 1 As shown, the aperture of the liquid supply port 12 is 1mm-4mm, that is, the aperture of the liquid supply port 12 is Φ and satisfies 1mm≤Φ≤4mm. Within the above size range, the medium in the liquid supply channel 11 can flow out of the liquid supply port 12 smoothly, and it is convenient to process and manufacture the liquid supply port 12. For example, in some specific embodiments, the aperture of the liquid supply port 12 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, etc.

[0071] In some embodiments, Figure 3 As shown, the maximum depth of the liquid guiding groove 31 is 0.2 mm-10 mm, that is, the maximum depth of the liquid guiding groove 31 is L1 and satisfies 0.2 mm≤L1≤10 mm. Within the above-mentioned size range, the medium flowing out of the liquid supply port 12 can flow smoothly into the liquid guiding groove 31, and it is convenient to process and manufacture the liquid guiding groove 31. For example, in some specific embodiments, the maximum depth of the liquid guiding groove 31 can be 0.2 mm, 0.5 mm, 1 mm, 3 mm, 5 mm, 7 mm, 9 mm, 10 mm, etc.

[0072] In some embodiments, Figure 2 As shown, the minimum width of the liquid guiding groove 31 is 1mm-10mm, that is, the minimum width of the liquid guiding groove 31 is L2 and satisfies 1mm≤L2≤10mm. Within the above-mentioned size range, the medium can flow smoothly from the liquid supply port 12 into the liquid guiding groove 31, ensuring smooth flow of the medium, avoiding obstruction to the flow of the medium, ensuring good cooling effect, and facilitating the processing and manufacturing of the liquid guiding groove 31. For example, in some specific embodiments, the minimum width of the liquid guiding groove 31 can be 1mm, 3mm, 5mm, 7mm, 9mm, 10mm, etc.

[0073] In some embodiments of the present invention, Figure 1As shown, the rotor partition 30 includes a first partition 301 and a second partition 302, and the first partition 301 and the second partition 302 are respectively arranged at the two ends of the rotor core 20 in the axial direction. The first partition 301 and the second partition 302 can prevent the magnetic field generated on the rotor core 20 from leaking, ensuring the reliable operation of the motor 100, and the first partition 301 and the second partition 302 can realize the cooling of the two ends of the rotor core 20 in the axial direction, ensuring reliable cooling.

[0074] In some embodiments where the liquid supply port 12 and the liquid guide groove 31 are opposite to each other along the radial direction of the rotor partition 30, there may be one liquid supply port 12, and one liquid supply port 12 is connected to the liquid guide grooves 31 of the first partition 301 and the second partition 302, so that the liquid supply demand for the two liquid guide grooves 31 can be achieved through one liquid supply port 12, meeting different setting requirements; or, as Figure 1 As shown, there are two liquid supply ports 12, and the two liquid supply ports 12 are connected to two liquid guide grooves 31 respectively, so that the liquid supply demand of the two liquid guide grooves 31 can be realized through the two liquid supply ports 12, which meets different setting requirements and ensures good medium circulation effect.

[0075] According to some embodiments of the present invention, Figure 1 As shown, the structure and / or size of the first partition 301 and the second partition 302 are the same, that is, the structure of the first partition 301 and the second partition 302 can be the same, or the size of the first partition 301 and the second partition 302 can be the same, which is convenient for processing and manufacturing the first partition 301 and the second partition 302, which is beneficial to reducing the design cost of the first partition 301 and the second partition 302; or the structure and size of the first partition 301 and the second partition 302 can be the same, which is convenient for processing and manufacturing the first partition 301 and the second partition 302, and can achieve the commonality of the first partition 301 and the second partition 302, which is beneficial to reducing the cost of processing the first partition 301 and the second partition 302 separately.

[0076] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, there are two groups of liquid supply ports 12, and the two groups of liquid supply ports 12 are spaced apart along the axial direction of the rotating shaft 10. The liquid guide grooves 31 of the first partition plate 301 and the second partition plate 302 are respectively connected to the two groups of liquid supply ports 12. Through the two groups of liquid supply ports 12, liquid can be supplied to the liquid guide grooves 31 of the first partition plate 301 and the second partition plate 302 located at both ends of the rotor core 20 in the axial direction, respectively, which can meet the liquid supply requirements of the two liquid guide grooves 31, ensure reliable cooling, and have a simple structure, which is easy to process and manufacture.

[0077] According to some embodiments of the present invention, Figure 1As shown, the two groups of liquid supply ports 12 are staggered along the circumferential direction of the rotating shaft 10, or the two groups of liquid supply ports 12 are relatively arranged along the axial direction of the rotating shaft 10, which can realize different arrangement requirements of the two groups of liquid supply ports 12, thereby meeting different design requirements.

[0078] In some embodiments, Figure 1 As shown, the motor 100 also includes a stator core 41 and a winding 42, the winding 42 is wound on the stator core 41, and the rotor core 20 is inserted into the stator core 41. When the motor 100 is working, the winding 42 is energized, and the rotor core 20 can rotate under the action of the magnetic field force of the stator core 41 and the winding 42 to achieve the working requirements of the motor 100, and through the liquid guide groove 31 located on the end face of the rotor partition 30 away from the rotor core 20, the medium can be sprayed to the inside of the winding 42 to ensure reliable cooling of the winding 42.

[0079] The electric drive system according to the embodiment of the utility model includes the motor 100 according to the embodiment of the utility model. Since the motor 100 according to the embodiment of the utility model has the above-mentioned beneficial technical effects, the electric drive system according to the embodiment of the utility model is located at the axial end of the rotor core 20 through the rotor partition 30, and a liquid guide groove 31 is provided on the end surface of the rotor partition 30 away from the rotor core 20, and the liquid guide groove 31 is connected with the liquid supply port 12 of the rotating shaft 10, so that the medium in the liquid supply channel 11 of the rotating shaft 10 can cool the rotor core 20 and other structures of the motor 100 through the liquid supply port 12 and the liquid guide groove 31, ensuring that the cooling effect of the motor 100 is good, and the heat dissipation efficiency of the motor 100 is improved, and the liquid guide groove 31 is located on the end surface of the rotor partition 30 away from the rotor core 20, which can avoid the medium from accumulating between the rotor partition 30 and the rotor core 20, resulting in the deterioration of the dynamic balance of the rotor core 20, and ensures that the dynamic balance of the rotor core 20 is good, thereby ensuring that the motor 100 works reliably. In addition, the angle between the extension direction of the bottom wall of the liquid guiding groove 31 and the radial direction of the rotating shaft 10 is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guiding groove 31 can reliably guide the medium, allowing the medium to flow smoothly, which is beneficial to improving the heat dissipation efficiency.

[0080] In the embodiment of the utility model, the specific structure of the rotating shaft 10 can be set according to actual conditions. For example, a liquid supply channel 11 is formed in the middle of the rotating shaft 10 itself.

[0081] For example, in some embodiments, Figure 1 As shown, the electric drive system also includes a reducer, the rotating shaft 10 is a hollow shaft, and the reducer shaft 50 of the reducer extends into one axial end of the hollow shaft, so that the rotating shaft 10 and the reducer shaft 50 can jointly define a liquid supply channel 11, which is convenient for processing and manufacturing the rotating shaft 10, and can simultaneously meet the driving requirements of the rotating shaft 10 and the reducer shaft 50.

[0082] The vehicle according to the embodiment of the utility model includes the motor 100 according to the embodiment of the utility model, or includes the electric drive system according to the embodiment of the utility model. Since the motor 100 or the electric drive system according to the embodiment of the utility model has the above-mentioned beneficial technical effects, the vehicle according to the embodiment of the utility model is located at the axial end of the rotor core 20 through the rotor partition 30, and a liquid guide groove 31 is provided on the end surface of the rotor partition 30 away from the rotor core 20, and the liquid guide groove 31 is connected with the liquid supply port 12 of the rotating shaft 10, so that the medium in the liquid supply channel 11 of the rotating shaft 10 can cool the rotor core 20 and other structures of the motor 100 through the liquid supply port 12 and the liquid guide groove 31, ensuring that the cooling effect of the motor 100 is good, and the heat dissipation efficiency of the motor 100 is improved, and the liquid guide groove 31 is located on the end surface of the rotor partition 30 away from the rotor core 20, which can avoid the medium from accumulating between the rotor partition 30 and the rotor core 20, resulting in the deterioration of the dynamic balance of the rotor core 20, and ensures that the dynamic balance of the rotor core 20 is good, thereby ensuring that the motor 100 works reliably. In addition, the angle between the extension direction of the bottom wall of the liquid guiding groove 31 and the radial direction of the rotating shaft 10 is α1, and α1 satisfies: 0°≤α1≤60°, which can ensure that the liquid guiding groove 31 can reliably guide the medium, allowing the medium to flow smoothly, which is beneficial to improving the heat dissipation efficiency.

[0083] The motor 100 , the electric drive system and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0084] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0085] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A rotating shaft (10), wherein the rotating shaft (10) has a liquid supply channel (11) therein, and an outer peripheral surface of the rotating shaft (10) is provided with a liquid supply port (12) which is in communication with the liquid supply channel (11); A rotor core (20), wherein the rotor core (20) is sleeved on the outer peripheral surface of the rotating shaft (10); A rotor partition (30), wherein the rotor partition (30) is sleeved on the outer peripheral surface of the rotating shaft (10) and is located at the axial end of the rotor core (20), and a liquid guide groove (31) is provided on the end surface of the rotor partition (30) away from the rotor core (20), and the liquid guide groove (31) is communicated with the liquid supply port (12). The angle between the extension direction of the bottom wall of the liquid-conducting groove (31) and the radial direction of the rotating shaft (10) is α1 and satisfies: 0°≤α1≤60°.

2. The motor according to claim 1, characterized in that The liquid guiding groove (31) extends along the radial direction of the rotor partition plate (30).

3. The motor according to claim 2, characterized in that In a direction from the radial inner side to the radial outer side of the rotor partition plate (30), the bottom wall of the liquid guide groove (31) extends obliquely in a direction away from the rotor core (20).

4. The motor according to claim 3, characterized in that α1 satisfies: 0°<α1≤30°.

5. The motor according to claim 3, characterized in that The end surface of the rotor partition plate (30) away from the rotor core (20) is formed as a predetermined end surface, and the bottom wall of the liquid guide groove (31) at one end away from the rotating shaft (10) extends to the predetermined end surface.

6. The motor according to any one of claims 1 to 5, characterized in that: One end of the liquid guiding groove (31) away from the rotating shaft (10) is spaced apart from the outer peripheral wall of the rotor partition plate (30).

7. The motor according to claim 1, characterized in that The width of the liquid guiding groove (31) is greater than or equal to the aperture of the liquid supply port (12).

8. The motor according to any one of claims 1 to 5, characterized in that: In a direction from the radial inner side to the radial outer side of the rotor partition plate (30), the widths of two opposite groove side walls of the liquid guide groove (31) gradually increase.

9. The motor according to claim 8, characterized in that The angle between two opposite edges of the liquid guiding groove (31) in the width direction is α2 and satisfies: 0°<α2≤90°.

10. The motor according to claim 9, characterized in that α2 satisfies: 3°≤α2≤15°.

11. The motor according to claim 1, characterized in that The liquid supply port (12) and the liquid guide groove (31) are opposite to each other along the radial direction of the rotor partition plate (30).

12. The motor according to claim 1, characterized in that The liquid supply ports (12) are multiple and evenly spaced along the circumferential direction of the rotating shaft (10), and the liquid guide grooves (31) are multiple and correspond one-to-one to the multiple liquid supply ports (12).

13. The motor according to claim 1, characterized in that The aperture of the liquid supply port (12) is 1 mm to 4 mm; And / or, the maximum depth of the liquid-conducting groove (31) is 0.2 mm-10 mm; And / or, the minimum width of the liquid-conducting groove (31) is 1 mm-10 mm.

14. The motor according to claim 1, characterized in that The rotor partition (30) comprises a first partition (301) and a second partition (302), wherein the first partition (301) and the second partition (302) are respectively arranged at two ends of the rotor core (20) in the axial direction.

15. The motor according to claim 14, characterized in that The first partition (301) and the second partition (302) have the same structure and / or size.

16. The motor according to claim 14, characterized in that The liquid supply ports (12) are divided into two groups spaced apart along the axial direction of the rotating shaft (10), and the liquid guide grooves (31) of the first partition plate (301) and the second partition plate (302) are respectively connected to the two groups of liquid supply ports (12).

17. The electric machine according to claim 16, characterized in that The two groups of liquid supply ports (12) are staggered along the circumferential direction of the rotating shaft (10); Alternatively, the two groups of liquid supply ports (12) are arranged opposite to each other along the axial direction of the rotating shaft (10).

18. An electric drive system, characterized in that: It comprises an electric machine (100) according to any one of claims 1-17.

19. A vehicle, characterized in that: It comprises the electric motor (100) according to any one of claims 1 to 17, or comprises the electric drive system according to claim 18.

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