CN220440497U - Cooling structure, casing, motor and vehicle of stator - Google Patents

Abstract

The application provides a cooling structure, casing, motor and vehicle of stator relates to electric drive technical field. According to the cooling structure that this application provided, be located the first spraying main part of the first side of axial of stator and set up in first spraying main part a plurality of first spraying parts have realized the axial to the stator and have sprayed the main part and set up in the second outside of the lateral part of stator a plurality of second spraying parts that spray the main part, have realized spraying to the lateral part of stator, so according to the cooling structure that this application provided, will spray the stator axial and spray two kinds of spraying mode and combine together with the lateral part, namely will utilize the axial to spray the winding of cooling stator, utilize the lateral part to spray the iron core of cooling stator to effectively improved the cooling effect to the stator, be particularly useful for cooling down the stator of flat wire motor.

Description

Cooling structure, casing, motor and vehicle of stator

Technical Field

The application relates to the technical field of electric drive, in particular to a cooling structure of a stator, a shell, a motor and a vehicle.

Background

The electric driving technology used by the new energy automobile is that the driving motor converts electric energy into mechanical energy to provide power for the automobile. The motor generates heat after being electrified, and the main components of the motor are copper wires and the secondary iron cores (namely the stator and rotor iron cores). The existing cooling mode of the driving motor stator is a radial annular or fan-shaped spraying structure, radial oil spraying parts are required to be added, the structure is relatively complex, the cost is high, and the cooling effect is limited.

Disclosure of Invention

In view of the above, the present application provides a cooling structure of a stator, a housing, a motor and a vehicle, and aims to solve the above technical problems.

In a first aspect, the present application provides a cooling structure of a stator, comprising:

a housing portion including a cavity for housing a stator of the motor;

the first spraying component comprises a first spraying main body and a plurality of first spraying parts, wherein the first spraying main body comprises a first spraying cavity arranged in the first spraying main body, the first spraying main body is arranged on a first side in the axial direction of the stator, the plurality of first spraying parts are arranged on one side, opposite to the first side of the stator, of the first spraying main body, and the plurality of first spraying parts are communicated with the environment where the first spraying cavity and the first spraying main body are located;

the second sprays the component, the second sprays the component including second spray body and a plurality of second and sprays the portion, the second spray body set up in the outside of the lateral part of stator, the second spray body including set up in the second of the inside of second spray body sprays the chamber, a plurality of second spray portion set up in the second spray body, a plurality of second spray portion intercommunication the second spray chamber with the second sprays the environment that the main part was located.

Preferably, the device further comprises a third spraying member, the third spraying member comprises a third spraying main body and a plurality of third spraying parts, at least part of the third spraying main body is arranged on the second side of the stator in the axial direction, the third spraying main body comprises a third spraying cavity, at least part of the third spraying main body comprises, the plurality of third spraying parts are arranged on the inner extension surface, and the plurality of third spraying parts are communicated with the environment where the third spraying cavity and the third spraying main body are located.

Preferably, in the case where the axial direction of the stator is configured to be horizontal, the number of the third spraying parts located above the horizontal plane in which the axis of the stator is located is greater than the number of the third spraying parts located below the horizontal plane in which the axis of the stator is located.

Preferably, in the case where the axial direction of the stator is configured to be horizontal, the number of the first spraying parts located above the horizontal plane in which the axis of the stator is located is greater than the number of the first spraying parts located below the horizontal plane in which the axis of the stator is located.

Preferably, the plurality of first spraying parts are uniformly distributed on the first spraying main body along the circumferential direction of the stator.

Preferably, the plurality of first spraying parts includes a plurality of sets of first spraying parts arranged along a radial direction of the stator, each set of first spraying parts being configured to face a position between adjacent layers of windings of the stator.

Preferably, the second spray body extends along the axial direction of the stator, and the dimension of the second spray body in the axial direction of the stator is greater than or equal to the axial dimension of the stator;

the number of the second spraying members is multiple, and the second spraying members are arranged at intervals along the circumferential direction of the stator;

for each second spraying component, the plurality of second spraying parts comprise a plurality of groups of second spraying parts, each group of second spraying parts are arranged along the axial direction of the stator, and two adjacent groups of second spraying parts are arranged on the second spraying main body at intervals.

Preferably, the housing further comprises a return path provided inside the cavity, the return path comprising an opening towards the stator, the return path extending along an axial direction of the stator, the return path being located below the stator with the axial direction of the stator configured to be horizontal, the return path exceeding the first and third spray members in the axial direction of the stator.

In a second aspect, the present application provides an electric machine comprising a cooling structure of a stator as described above or a housing as described above, the electric machine further comprising a stator arranged within the housing.

In a third aspect, the present application provides a vehicle comprising an electric machine as described above.

According to the cooling structure of the stator that this application provided, be located the first spraying main part of the first side of axial of stator and set up in first spraying main part a plurality of first spraying parts have realized the axial to the stator and have sprayed the main part and set up in the second of the outside of the lateral part of stator a plurality of second spraying parts that spray the main part, have realized the spraying to the lateral part of stator, so according to the cooling structure of the stator that this application provided, will spray the stator axial and spray two kinds of spraying mode and combine together, namely will utilize the winding of axial spray cooling stator, utilize the lateral part to spray the iron core of cooling stator to effectively improved the cooling effect to the stator, be particularly useful for cooling the stator of flat wire motor.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of an isometric view of a housing according to a first aspect of an embodiment of the present application;

FIG. 2 shows a schematic diagram of a front view of a housing according to a first aspect of an embodiment of the present application;

FIG. 3 shows a schematic view of a cross-section of section A-A in FIG. 2;

fig. 4 shows a cross-sectional view of a housing according to a first aspect of an embodiment of the present application, taken along a vertical plane, with a stator housed therein, and a schematic view of the spray liquid flow direction;

fig. 5 shows a schematic illustration of an isometric view of a third spray member of a housing according to the first aspect of an embodiment of the present application.

Reference numerals:

10-a receiving part; 11-a cavity; 12-a return path;

20-a first spray member; 21-a first spray body; 22-a first spray chamber; 23-a first spray section;

30-a second spray member; 31-a second spray body; 32-a second spray chamber; 33-a second spray section;

40-a third spray member; 41-a third spray body; 42-a third spray chamber; 43-inner extension surface; 44-a protrusion; 45-flanges; 46-a third spray section; 50-a decelerator mounting part; 60-liquid inlet pipeline; 70-stator.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

According to a first aspect of an embodiment of the present application, there is provided a cooling structure of a stator, and a structure and an operation principle of a casing will be described in detail with reference to fig. 1 to 5.

In an embodiment, a cooling structure of a stator provided according to the first aspect of the embodiments of the present application includes a receiving part 10, a first spray member 20, and a second spray member 30. Wherein the housing 10 comprises a cavity 11 for housing a stator 70 of the motor. The first spraying member 20 comprises a first spraying main body 21 and a plurality of first spraying parts 23, the first spraying main body 21 comprises a first spraying cavity 22 arranged in the first spraying main body 21, the first spraying main body 21 is arranged on a first side in the axial direction of the stator 70, the plurality of first spraying parts 23 are arranged on one side, opposite to the first side of the stator 70, of the first spraying main body 21, and the plurality of first spraying parts 23 are communicated with the environment where the first spraying cavity 22 and the first spraying main body 21 are located.

In an embodiment, the second spraying member 30 includes a second spraying body 31 and a plurality of second spraying parts 33, the second spraying body 31 is disposed at an outer side of a side portion of the stator 70, the second spraying body 31 includes a second spraying cavity 32 disposed at an inner portion of the second spraying body 31, the plurality of second spraying parts 33 are disposed at the second spraying body 31, and the plurality of second spraying parts 33 communicate the second spraying cavity 32 with an environment in which the second spraying body 31 is located.

According to the cooling structure of the stator provided in the first aspect of the embodiment of the present application, the first spraying main body 21 located at the first side of the stator 70 in the axial direction and the plurality of first spraying parts 23 disposed on the first spraying main body 21 realize the axial spraying of the stator 70, the second spraying main body 31 located at the outer side of the side part of the stator 70 and the plurality of second spraying parts 33 disposed on the second spraying main body 31 realize the spraying of the side part of the stator 70, so that the cooling structure of the stator provided in the first aspect of the embodiment of the present application combines two spraying modes of the axial spraying and the side spraying of the stator 70, that is, the winding of the stator 70 is cooled by using the axial spraying and the iron core of the stator 70 is cooled by using the side spraying, thereby effectively improving the cooling effect of the stator 70, and being particularly suitable for cooling the stator 70 of a flat wire motor.

In the embodiment, the side of the stator 70 mentioned in the above description is understood as the side between a first side in the axial direction of the stator 70 and a second side in the axial direction of the stator 70 described below, i.e., the side between both sides in the axial direction in the case where the shape of the stator 70 is regarded as columnar or substantially columnar.

In embodiments, the above description refers to the environment in which a spray chamber and a spray body of the spray chamber are in communication, which is understood to include the environment in which the spray body of the spray chamber is capable of ejecting fluid from the spray chamber into the spray chamber. In the case of the first spraying part 23, the first spraying part 23 is provided at a side of the first spraying body 21 opposite to the first side of the stator 70, and thus, the fluid sprayed from the first spraying part 23 is sprayed toward the first side of the stator 70, thereby cooling the windings of the stator 70. Specifically, referring to fig. 4, the spray pattern is shown in fig. 4, where the first side of the stator 70 is sprayed may be both the end face of the first side of the stator 70 and a portion of the outside of the first side. In the second spray portion 33, the second spray portion 33 is provided to the second spray body 31, and the second spray body 31 is provided outside the side portion of the stator 70, so that the fluid sprayed from the second spray body 31 flows to the side portion of the stator 70, thereby cooling the core of the stator 70.

In an embodiment, the first spray member 20 and the second spray member 30 may be provided as separate components to the inner wall of the receiving part 10 (i.e., the inner wall of the cavity 11), in other words, the first spray member 20 may be interposed between the inner wall of the receiving part 10 and the first side of the stator 70, and the second spray member 30 may be interposed between the inner wall of the receiving part 10 and the side of the stator 70. However, alternatively, in the example given in the drawings, the first spray member 20 and the second spray member 30 may be integrally formed with the housing 10, in other words, portions of the outer side of the first spray member 20 and portions of the outer side of the second spray member 30 serve as portions of the inner wall of the housing 10, thereby defining the cavity 11 of the housing 10.

The cooling structure of the stator provided according to the first aspect of the embodiments of the present application may further include a third spray member 40, the third spray member 40 may include a third spray body 41 and a plurality of third spray portions 46, at least a portion of the third spray body 41 may be disposed on a second side of the stator 70 in an axial direction, the third spray body 41 may include a third spray cavity 42, the at least a portion of the third spray body 41 may include an inner extension surface 43, the plurality of third spray portions 46 may be disposed on the inner extension surface 43, the inner extension surface 43 may extend along a circumferential direction of the stator 70, and the plurality of third spray portions 46 may communicate an environment in which the third spray cavity 42 and the third spray body 41 are disposed.

The cooling structure of the stator according to the first aspect of the embodiment of the present application achieves radial cooling of the second side of the stator 70 in the axial direction by using the third spray body 41 at least partially disposed on the second side of the body of the stator 70 in the axial direction and the plurality of third spray portions 46 disposed on the third spray body 41, and can further improve the cooling effect on the stator 70 in combination with the above-described axial spraying and side spraying of the stator 70.

In the embodiment, the "the plurality of third spraying parts 46 communicate the third spraying chamber 42 with the environment where the third spraying body 41 is located" has the same meaning as the above description of the first spraying member 20 and the second spraying member 30, and will not be repeated herein. Further, the plurality of third spraying parts 46 may be provided at the inner extension surface 43 of the third spraying body 41, wherein the inner extension surface 43 refers to a surface extending inside the third spraying body 41, and the inner extension surface 43 may extend along the circumferential direction of the stator 70, and thus the plurality of third spraying parts 46 spray toward the inside surrounded by the inner extension surface 43, thereby enabling cooling of the second side of the stator 70.

In an embodiment, the dimensions of the respective portions of the inner extension surface 43 in the circumferential direction of the stator 70, which are given as examples in the drawings, may be the same in the axial direction of the stator 70, in other words, the inner extension surface 43 is an inner cylindrical surface or a part of an inner cylindrical surface, in which case the third spray body 41 may be annular, and the third spray cavity 42 may be a cavity 11 extending one round inside the third spray body 41 in the circumferential direction of the third spray body 41, whereby the third spray member 40 is formed as a substantially split ring (in the case where the spray liquid is oil, the third spray member 40 is formed as a substantially split ring). Alternatively, the inner extension surface 43 may not be an inner cylindrical surface or a part of an inner cylindrical surface, for example, a position of the inner extension surface 43 in the circumferential direction of the stator 70 may have a part of a surface extending in the axial direction of the stator 70 on the basis of a part of the inner cylindrical surface, in which case the part of the surface may also be utilized as a set position of a part of the third shower portion 46.

In an embodiment, according to the cooling structure of the stator provided in the first aspect of the embodiment of the present application, in a case where the axial direction of the stator 70 is configured to be horizontal, the number of the third spraying parts 46 located above the horizontal plane in which the axis of the stator 70 is located may be greater than the number of the third spraying parts 46 located below the horizontal plane in which the axis of the stator 70 is located.

In an embodiment, in the case where the axial direction of the stator 70 is configured to be horizontal, the stator 70 may be in an operating state, that is, the motor including the stator 70 may be in an operating state, in which case the number of the third spraying parts 46 located above the plane in which the axis of the stator 70 is located is greater than the number of the third spraying parts 46 located below the plane in which the axis of the stator 70 is located, which is advantageous in ensuring the uniformity and the synchronism of spraying of the plurality of third spraying parts 46.

In an embodiment, as an example, the media that the first spray member 20, the second spray member 30, and the third spray member 40 may spray may all be oil. In an embodiment, as a fluid, the oil may flow downward under the influence of gravity. In the case where the axial direction of the stator 70 is configured horizontally, if the third spray chamber 42 is not filled with oil, the oil may reach the bottom of the third spray chamber 42 first by gravity during entering the third spray chamber 42, which may cause the third spray portion 46 located below the plane of the axis of the stator 70 to spray the oil before the third spray portion 46 located above the plane of the axis of the stator 70, and may reduce the spray amount of the sprayed oil of the third spray portion 46 located above the plane of the axis of the stator 70. Accordingly, with the number adjustment as described above, it is advantageous that all of the third spray portions 46 spray-cool the second side of the stator 70 at relatively synchronous spray timings and relatively uniform spray amounts.

However, without being limited thereto, alternatively, the number of the third spraying parts 46 located above the horizontal plane in which the axis of the stator 70 is located may be the same as the number of the third spraying parts 46 located below the horizontal plane in which the axis of the stator 70 is located, and the arrangement manner of the third spraying parts 46 above the horizontal plane and the third spraying parts 46 below the horizontal plane may be the same, which is particularly advantageous in reducing the difficulty of processing the third spraying member 40, thereby improving the processing efficiency of the third spraying member 40.

In an embodiment, the third spray member 40 may include a protrusion 44 disposed at an outer side of the third spray body 41, the receiving portion 10 may include a recess corresponding to the protrusion 44, the recess may be disposed at an inner wall of the receiving portion 10, and the protrusion 44 and the recess may be sized and shaped to be matched with each other.

According to the cooling structure of the stator provided in the first aspect of the embodiment of the present application, the third spraying member 40 may be disposed in the cavity 11 of the accommodating portion 10, and the positioning of the third spraying member 40 may be achieved by the protruding portion 44 and the corresponding recessed portion. As an example, a flange 45 may be provided on the outer side of the third spray body 41, and a fixing portion for connection with the second side of the stator 70, for example, a through hole penetrating the flange 45 may be provided on the flange 45, so that the flange 45 and the stator 70 may be connected with a screw.

In an embodiment, in the case where the axial direction of the stator 70 is configured to be horizontal, the number of the first spraying parts 23 located above the horizontal plane in which the axis of the stator 70 is located may be greater than the number of the first spraying parts 23 located below the horizontal plane in which the axis of the stator 70 is located. In the embodiment, the beneficial effects of the arrangement of the first spraying portion 23 are the same as those of the arrangement of the third spraying portion 46 described above, that is, it is advantageous for all of the first spraying portions 23 to spray-cool the windings of the stator 70 at relatively synchronous spraying timings and relatively uniform spraying amounts. As an example, in an embodiment, the first spray body 21 may be formed in a ring shape, a through hole is opened at a center thereof, and a shaft of a motor including the stator 70 may be penetrated, so that the first spray body 21 is formed as a substantial spray disc, and in case that the sprayed fluid is oil, the first spray body 21 is formed as a substantial spray disc.

In an embodiment, the plurality of first spraying parts 23 may be uniformly distributed to the first spraying body 21 along the circumferential direction of the stator 70. Similar to the effect of the uniform distribution of the third spray portion 46 mentioned in the above description, such uniform distribution is advantageous in reducing the difficulty of processing the first spray member 20 to mention the processing efficiency of the first spray member 20.

In an embodiment, the plurality of first spraying parts 23 may include a plurality of sets of first spraying parts 23 arranged along a radial direction of the stator 70, each set of first spraying parts 23 being configured to face a position between adjacent layers of windings of the stator 70. In this way, the plurality of sets of first sprays 23 may better spray cool the windings of the stator 70, particularly for locations between adjacent layers of windings of a flat wire motor.

In an embodiment, the number of the first spraying parts 23 included in each of the plurality of the first spraying parts 23 may be the same, in which case, as mentioned above, the plurality of first spraying parts 23 may be uniformly distributed to the first spraying body 21 along the circumferential direction of the stator 70.

Alternatively, the number of the first spraying parts 23 included in some of the plurality of sets of the first spraying parts 23 may be the same, and the number of the first spraying parts 23 included in other sets may be different, in which case the number of the first spraying parts 23 located above the horizontal plane of the axis of the stator 70 may be greater than the number of the first spraying parts 23 located below the horizontal plane of the axis of the stator 70. In this example, the number of the first spraying parts 23 included in the other groups may be smaller, and the first spraying parts 23 in the other groups may be disposed in one-to-one correspondence with the first spraying parts 23 in the group having the greater number of the first spraying parts 23 in the radial direction of the stator 70, thereby facilitating the processing of the second spraying member 30.

In an embodiment, the second spray body 31 may extend along an axial direction of the stator 70, and a dimension of the second spray body 31 in the axial direction of the stator 70 is greater than or equal to an axial dimension of the stator 70. In this way, the second spray body 31 can have a sufficient length in the axial direction of the stator 70 to provide the installation position of the second spray portion 33 as much as possible, ensuring the cooling effect on the core of the stator 70.

In an embodiment, the number of the second spraying members 30 may be plural and may be disposed at intervals along the circumferential direction of the stator 70, thereby further securing the cooling effect on the core of the stator 70. In an embodiment, the second spray member 30 may have a tubular shape, and as an example, the number of the second spray members 30 may be two.

In an embodiment, for each second spraying member 30, the plurality of second spraying parts 33 may include a plurality of sets of second spraying parts 33, each set of second spraying parts 33 may be disposed on the second spraying body 31 along the axial direction of the stator 70, and two adjacent sets of second spraying parts 33 may be disposed at intervals on the second spraying body 31. In an embodiment, multiple sets of second spray portions 33 facilitate providing different spray angles, thereby enabling oil to relatively quickly cover the sides of the stator 70 to improve cooling efficiency. In an embodiment, each set of the second spraying parts 33 may include a plurality of second spraying parts 33 arranged on the second spraying body 31 at intervals along the axial direction of the stator 70, and the plurality of second spraying parts 33 may include two sets of the second spraying parts 33, as an example.

In an embodiment, the cooling structure of the stator may further include a return path 12, the return path 12 may be provided at an inner wall of the receiving portion 10, the return path 12 may include an opening toward the stator 70, the return path 12 may extend along an axial direction of the stator 70, and the return path 12 is located below the stator 70 in a case where the axial direction of the stator 70 is configured to be horizontal. According to the cooling structure of the stator provided in the first aspect of the embodiment of the present application, the return path 12 is capable of recovering the spray liquid under the stator 70, thereby allowing a pump to be provided in a housing described below to extract the spray liquid from the return path 12 to recover the spray liquid. In an embodiment, the return path 12 may be a groove formed in the inner wall of the receiving portion 10, which has a strip-shaped opening toward the stator 70.

In an embodiment, both ends of the return path 12 may extend beyond the first spray member 20 and the third spray member 40 in the axial direction of the stator 70, thereby enabling the return path 12 to collect spray oil from the three of the first spray member 20, the second spray member 30, and the third spray member 40.

Furthermore, in an embodiment, the cooling structure of the stator may further include a liquid inlet pipe 60 integrally formed with the receiving part 10, and the liquid inlet pipe 60 includes a branch pipe communicating with the first spray chamber 22, a branch pipe communicating with the second spray chamber 32, and a branch pipe communicating with the third spray chamber 42, thereby facilitating concentrated oil supply to the three spray members.

Further, in the embodiment, the below-described housing may further include a decelerator mounting part 50, and the decelerator mounting part 50 is connected to the outside of the accommodating part 10 for mounting the decelerator.

The application provides a cooling structure of stator, motor stator refrigerated oil circuit, the cooling oil of electric drive assembly is through the oil cooler cooling, gets into the oil pocket that disc type oil spray disc and integration (reduction gear and motor are the casing together) casing formed from the oil inlet, and a branch road gets into the welding tip of iron core and stator, passes through oil pipe transmission, and partial oil sprays the gap that forms between iron core and the casing through oil pipe's oilhole. The other branch only enters the iron core through the oil cavity, and is sprayed to a gap formed between the iron core and the shell through the oil hole on the oil pipe, and the rest of oil is sprayed to the end part of the stator winding through the hole on the disc type oil spraying disc.

The integrated shell is processed in a high-pressure casting aluminum mode, the oil spraying disc can be processed and manufactured in a high-pressure casting aluminum mode, and the shell and the oil spraying disc can be welded in a friction stir welding mode or connected in a bolt fixing mode. According to the heat dissipation distribution condition of the winding end part, a plurality of layers of holes are formed, the motor is particularly suitable for flat wire motors, the oil holes are formed between layers of the stator winding, and the oil holes can be formed in the upper part of the stator winding, and the bottom of the motor is cooled by the oil liquid surface. The oil spraying disc can be manufactured by using an injection molding piece or a sheet metal process, an oil cavity is formed between the oil spraying disc and the integrated shell, and cooling oil is sprayed to the winding end part axially through the oil cavity and then the winding end part of the stator to cool the winding end part of the stator. In addition, the oil cavity is closer to the bearing, and has a certain cooling effect on the outer ring of the bearing.

The oil is sprayed onto the stator core through the oil holes on the oil pipes, the two oil pipes are arranged at a relatively high position, and the core and the integrated shell form an oil cavity, so that the oil uniformly cools the stator core, flows into the bottom oil return channel after cooling the core, returns to the oil cavity of the speed reducer, enters the oil pump, enters the oil cooler and cools the oil; the cooled oil then enters the motor. The oil enters an oil cavity of the oil distributing ring and is sprayed to the end part of the stator winding through an oil spray hole, the oil spray hole on the oil distributing ring forms an oil spray hole of 360 degrees, and the upper part of the oil distributing ring can be sprayed with oil at 270 degrees or the lower part of the stator can be cooled through oil falling back according to the requirement.

According to a second aspect of embodiments of the present application, a cooling structure of a housing including a stator as described above is provided, and the above advantageous effects are also included, which are not described herein.

According to a third aspect of the embodiments of the present application, there is provided an electric machine, which includes a cooling structure of the stator or the housing as described above, and further includes the stator 70 disposed in the housing, and further includes the advantages as described above, which are not described herein.

According to a fourth aspect of embodiments of the present application, a vehicle is provided, which includes the above motor and also includes the above advantages, and is not described herein.

The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application, but rather, the present application is intended to cover any variations of the equivalent structures described herein or shown in the drawings, or the direct/indirect application of the present application to other related technical fields.

Claims (11)

1. A cooling structure of a stator (70), characterized by comprising:

a housing (10), the housing (10) comprising a cavity (11) for housing a stator (70) of an electric motor;

the first spraying component (20), the first spraying component (20) comprises a first spraying main body (21) and a plurality of first spraying parts (23), the first spraying main body (21) comprises a first spraying cavity (22) arranged in the first spraying main body (21), the first spraying main body (21) is arranged on a first side of the stator (70) in the axial direction, the plurality of first spraying parts (23) are arranged on one side, opposite to the first side of the stator (70), of the first spraying main body (21), and the plurality of first spraying parts (23) are communicated with the environment where the first spraying cavity (22) and the first spraying main body (21) are located;

the second sprays component (30), the second sprays component (30) including second spray main part (31) and a plurality of second spray portion (33), second spray main part (31) set up in the outside of the lateral part of stator (70), second spray main part (31) including set up in second spray cavity (32) of the inside of second spray main part (31), a plurality of second spray portion (33) set up in second spray main part (31), a plurality of second spray portion (33) intercommunication second spray cavity (32) with the environment that second spray main part (31) are located.

2. The cooling structure of a stator (70) according to claim 1, further comprising a third spray member (40), the third spray member (40) comprising a third spray body (41) and a plurality of third spray portions (46), at least a portion of the third spray body (41) being disposed on a second side of the stator (70) in an axial direction, the third spray body (41) comprising a third spray cavity (42), the at least a portion of the third spray body (41) comprising an inner extension surface (43), the plurality of third spray portions (46) being disposed on the inner extension surface (43), the plurality of third spray portions (46) communicating an environment in which the third spray cavity (42) and the third spray body (41) are located.

3. The cooling structure of a stator (70) according to claim 2, characterized in that in a case where an axial direction of the stator (70) is arranged horizontally, the number of third spray portions (46) located above a horizontal plane in which an axis of the stator (70) is located is greater than the number of third spray portions (46) located below the horizontal plane in which the axis of the stator (70) is located.

4. The cooling structure of a stator (70) according to claim 1, characterized in that, in a case where an axial direction of the stator (70) is arranged horizontally, the number of first shower portions (23) located above a horizontal plane in which an axis of the stator (70) is located is greater than the number of first shower portions (23) located below the horizontal plane in which the axis of the stator (70) is located.

5. The cooling structure of the stator (70) according to claim 1, wherein the plurality of first shower portions (23) are uniformly distributed to the first shower body (21) along a circumferential direction of the stator (70).

6. The cooling structure of a stator (70) of claim 1, wherein the plurality of first spray portions (23) comprises a plurality of sets of first spray portions (23) arranged along a radial direction of the stator (70), each set of first spray portions (23) being configured to face a position between adjacent layers of windings of the stator (70).

7. The cooling structure of the stator (70) according to claim 1, wherein,

the second spray body (31) extends along the axial direction of the stator (70), and the dimension of the second spray body (31) in the axial direction of the stator (70) is greater than or equal to the axial dimension of the stator (70);

the number of the second spraying members (30) is a plurality, and the second spraying members are arranged at intervals along the circumferential direction of the stator (70);

for each second spraying member (30), the plurality of second spraying parts (33) comprises a plurality of groups of second spraying parts (33), each group of second spraying parts (33) are arranged along the axial direction of the stator (70), and two adjacent groups of second spraying parts (33) are arranged on the second spraying main body (31) at intervals.

8. The cooling structure of a stator (70) according to claim 2, further comprising a return path (12), the return path (12) being provided inside the cavity (11), the return path (12) comprising an opening towards the stator (70), the return path (12) extending along an axial direction of the stator (70), the return path (12) being located below the stator (70) with the axial direction of the stator (70) configured to be horizontal, the return path (12) exceeding the first spray member (20) and the third spray member (40) in the axial direction of the stator (70).

9. A housing, characterized in that it comprises a cooling structure of a stator (70) according to any one of claims 1 to 8.

10. An electric machine, characterized in that it comprises a cooling structure of a stator (70) according to any one of claims 1 to 8 or a housing according to claim 9, the electric machine further comprising a stator (70) arranged inside the housing.

11. A vehicle comprising the electric machine of claim 10.