Spraying piece, motor, driving assembly and vehicle

Abstract

The utility model discloses a spraying part, a motor, a driving assembly and a vehicle. Comprising a body and a spraying head. A body of the spraying piece is provided with a cooling channel for a cooling medium to pass through, the spraying head is arranged on the body, a plurality of spraying channels are formed in the spraying head and communicated with the cooling channel, and an included angle is formed between the central axes of at least two spraying channels. According to the stator assembly, the plurality of spraying channels are formed in the spraying head integrated on the spraying piece, and the included angles exist between the central axes of the plurality of spraying channels, so that a cooling medium can be sprayed in a plurality of different directions through the plurality of spraying channels after entering the spraying head, and the heat dissipation efficiency of the stator assembly is improved.

Description

Technical Field

[0001] The utility model generally relates to the technical field of motors, and in particular to a spray component, a motor, a drive assembly and a vehicle. Background Art

[0002] Applications such as new energy vehicles have increasingly higher requirements for motor power density and torque density, especially with the trend of integration, which puts higher requirements on the heat dissipation capacity of motors. The stator assembly generates a lot of heat during the operation of the motor. In related technologies, spray cooling is often used to dissipate heat from the stator assembly. This method has a large cooling medium coverage and high heat dissipation efficiency. Usually, a spray part is set in the circumferential direction of the stator, and a spray hole is opened on the spray part. After the coolant enters the spray part, it is sprayed through the spray hole to the outer surface of the stator assembly to achieve heat dissipation of the stator assembly.

[0003] In order to ensure that most of the coolant can be sprayed onto the outer surface of the stator assembly and prevent the coolant from splashing in different directions, a spray head structure is provided on the spray piece in the related art so that the coolant is sprayed in the direction of the spray head. The spray piece with an integrated spray head has the problem of only spraying the cooling medium in one direction, and is unable to spray the stator assembly from multiple different directions at the same time through the spray head, resulting in low heat dissipation efficiency of the stator assembly. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the related art, it is desired to provide a spray member, a motor, a drive assembly and a vehicle.

[0005] In a first aspect, the utility model provides a spraying part, comprising: a body and a spray head. The body is provided with a cooling channel for a cooling medium to pass through, the spray head is arranged on the body, a plurality of spray channels are opened in the spray head, the plurality of spray channels are all connected to the cooling channel, and an angle exists between the central axes of at least two of the spray channels.

[0006] As an optional solution, the body is annular, the number of the spray heads is multiple, the multiple spray heads are arranged on the inner surface of the body, and the multiple spray heads are arranged at intervals in the circumferential direction of the body.

[0007] As an optional solution, at least one of the plurality of spray channels extends toward the center of the body.

[0008] As an optional solution, the spray channel extending toward the center of the body is coaxially arranged with the cooling channel.

[0009] As an optional solution, the sum of the cross-sectional areas of the plurality of spray channels is S1, the cross-sectional area of ​​the cooling channel is S2, and S2 ≥ S1.

[0010] As an optional solution, the body and the sprinkler head are integrally formed.

[0011] In a second aspect, the utility model provides a motor, comprising the spray element of the first aspect.

[0012] As an optional solution, the motor further includes a stator assembly and a shell. The stator assembly and the spray element are both arranged in the shell. The main body is annular and is arranged radially outside the stator assembly.

[0013] As an optional solution, an annular oil channel is formed between the spray element and the inner wall of the shell, and the annular oil channel is connected to the cooling channel.

[0014] In a third aspect, the utility model provides a drive assembly, comprising the motor of the second aspect.

[0015] In a fourth aspect, the utility model provides a vehicle, comprising the drive assembly of the third aspect.

[0016] The spray component, motor, drive assembly and vehicle of the utility model have multiple spray channels opened in a spray head integrated on the spray component, and there is an angle between the central axes of at least two spray channels, so that the cooling medium can be sprayed in multiple different directions through the multiple spray channels after entering the spray head, thereby improving the heat dissipation efficiency of the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figure 1 A schematic diagram of a motor structure of an embodiment provided in this application;

[0019] Figure 2 A spray piece according to an embodiment of the present application;

[0020] Figure 3 for Figure 1 The cross-sectional view of the motor in the AA direction;

[0021] Figure 4 for Figure 3 A magnified view of region C in FIG.

[0022] Figure 5 for Figure 1 A cross-sectional view of the motor in the BB direction.

[0023] In the figure,

[0024] 100. Main body, 110. Cooling channel,

[0025] 200. Spray head, 210. First spray channel, 220. Second spray channel,

[0026] 300. Stator assembly,

[0027] 400. Shell, 410. Annular oil passage,

[0028] 1000. Spray parts. DETAILED DESCRIPTION

[0029] The present application will be further described in detail below in conjunction with the accompanying drawings and implementation methods. It is to be understood that the present application can be implemented in various forms and should not be limited by the implementation methods described herein. On the contrary, these implementation methods are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art. It is also necessary to explain that, for ease of description, only the parts related to the present application are shown in the accompanying drawings.

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] The embodiments of the present application provide a spray element 1000, a motor, a drive assembly and a vehicle.

[0032] In a first aspect, an embodiment of the present application provides a spray element 1000. Figures 1 to 5 As shown, the shower head includes a body 100 and a shower head 200 .

[0033] The body 100 of the spraying member 1000 is provided with a cooling channel 110 for a cooling medium to pass through. The cooling medium may be solid, liquid or gaseous. The cooling medium is sprayed onto the surface of the stator assembly 300 through the cooling channel 110 to achieve heat dissipation of the stator assembly 300. The spray head 200 is provided on the body 100. A plurality of spray channels are provided in the spray head 200. The plurality of spray channels are all connected to the cooling channel 110. There is an angle between the central axes of at least two spray channels.

[0034] The cooling channel 110 is connected to the plurality of spray channels, so that the cooling medium enters the spray head 200 from the cooling channel 110 in the body 100 and is sprayed onto the stator assembly 300 through the plurality of spray channels.

[0035] The existence of an angle between the central axes of at least two spray channels means that, among the multiple spray channels, the angle between the central axes of at least two spray channels is between (0,180°].

[0036] The spray part 1000 of the embodiment of the present application opens a plurality of spray channels in the spray head 200, and there is an angle between the central axes of at least two spray channels, so that the cooling medium can be sprayed in a plurality of different directions through the plurality of spray channels after entering the spray head 200, thereby improving the heat dissipation efficiency of the stator assembly 300.

[0037] As an achievable method, Figure 1-Figure 2 As shown, the body 100 is an annular structure, and the number of the spray heads 200 is multiple, and the multiple spray heads 200 are arranged on the inner surface of the body 100, and the multiple spray heads 200 are arranged at intervals in the circumferential direction of the body 100. Among them, the arrangement of the spray heads 200 in the circumferential direction of the body 100 can be uniform, or it can be determined according to specific circumstances. At the position where the cooling demand of the stator assembly 300 is relatively large, multiple spray heads 200 can be arranged at the corresponding position on the body 100, for example, at the position close to the bottom of the stator assembly 300, since it is difficult for the cooling medium to be sprayed to the bottom of the stator assembly 300, the heat dissipation loss is relatively large during the spraying process, and multiple spray heads 200 can be arranged to spray the bottom position of the stator assembly 300 at the same time. The main body 100 of the spray piece 1000 is configured as an annular structure, and a plurality of spray heads 200 are circumferentially spaced apart on the inner surface of the main body 100 . This facilitates installation with the shell 400 , and enables the spray piece 1000 to fully spray the stator assembly 300 in the circumferential direction, thereby improving the heat dissipation effect of the stator assembly 300 .

[0038] As an achievable manner, in each spray head 200, at least one spray channel extends toward the center of the body 100. Figure 3-Figure 5As shown, the plurality of spray channels can be divided into a first spray channel 210 and a plurality of second spray channels 220. The first spray channel 210 extends toward the center of the body 100. The time for the cooling medium to reach the stator assembly 300 from the spray part 1000 is the shortest. At the same time, most of the cooling medium can reach the surface of the stator assembly 300, and the cooling effect on the stator assembly 300 is good. On the basis of the first spray channel 210 extending toward the center of the body 100, a plurality of second spray channels 220 are additionally provided, so that the spray part 1000 can spray the stator assembly 300 from any other direction in addition to spraying the stator assembly 300 in the radial direction, thereby increasing the spray path for the stator assembly 300 and improving the heat dissipation efficiency of the stator assembly 300. The number of the second spray channels 220 and the angle between the second spray channels 220 and the first spray channel 210 can be reasonably set according to the heat dissipation requirements of the stator assembly 300, the distance between the spray part 1000 and the stator assembly 300, etc. Preferably, the number of the second spray channels 220 is set to four, two second spray channels 220 with opposite spray directions are set in the axial direction of the stator assembly 300, and two second spray channels 220 with opposite spray directions are set in the circumferential direction of the stator assembly 300. The four second spray channels 220 are perpendicular to the first spray channel 210. Figure 4-Figure 5 The axial direction or circumferential direction of the stator assembly 300 is not required to be a strict axial direction or circumferential direction, and it only needs to be close to the axial direction or circumferential direction.

[0039] As a feasible method, the sum of the cross-sectional areas of the multiple spray channels is S1, the cross-sectional area of ​​the cooling channel 110 is S2, and the relationship between S1 and S2 is S2 ≥ S1, that is, the cross-sectional area of ​​the cooling channel 110 is greater than the sum of the cross-sectional areas of the multiple spray channels. In this way, after the cooling medium enters the multiple spray channels from the cooling channel 110, the cross-sectional area decreases, resulting in an increase in the flow velocity of the cooling medium, and the cooling medium can be sprayed onto the surface of the stator assembly 300 faster, and the spray cooling efficiency is improved, that is, by changing the flow pattern and flow velocity of the cooling medium, the cooling medium can be sprayed onto the stator assembly 300, thereby improving the cooling effect on the stator assembly 300.

[0040] Among them, the cross-sectional area of ​​each spray channel may be the same or different. Within the range of S2≥S1, the size of the cross-sectional area of ​​each spray channel may be adjusted according to the cooling requirements. For cooling, in one embodiment, it is usually difficult for the cooling medium to be sprayed to the bottom of the stator assembly 300, and the cooling effect on the bottom of the stator assembly 300 is poor. Therefore, the cross-sectional area of ​​the first spray channel 210 in the spray head 200 located at the bottom of the stator assembly 300 may be designed to be smaller, thereby increasing the speed at which the cooling medium sprays toward the bottom of the stator assembly 300 and improving the cooling effect.

[0041] Among them, Figure 3-Figure 5 As shown, the cross-sectional area of ​​the plurality of spray channels refers to the area of ​​the plane in which the first spray channel 210 or the second spray channel 220 is located in a direction perpendicular to the flow direction of the cooling medium. The cross-section of the first spray channel 210 or the second spray channel 220 can be a triangle, a quadrilateral, a pentagon or other polygons, preferably, the cross-section is circular or approximately circular.

[0042] As an achievable method, Figure 1-Figure 3 As shown, there are multiple cooling channels 110, and the multiple cooling channels 110 correspond to the multiple spray heads 200 one by one; in each spray head 200, the first spray channel 210 extending toward the center direction of the main body 100 is coaxially arranged with the cooling channel 110. This arrangement can reduce injection molding defects and make the wall thickness of the spray part 1000 at each spray head 200 arranged in the circumferential direction uniform.

[0043] As a feasible approach, the body 100 and the shower head 200 are integrally formed, which can shorten the production cycle and reduce the production cost.

[0044] In a second aspect, an embodiment of the present application provides a motor, comprising the spray element 1000 of the first aspect.

[0045] like Figure 3 As shown, the motor includes a stator assembly 300 and a housing 400 . The stator assembly 300 and the spray element 1000 are both arranged in the housing 400 . The spray element 1000 is annular and is arranged on the circumferential outer side of the stator assembly 300 to spray the stator assembly 300 .

[0046] The motor may be an inner rotor motor, an outer rotor motor, or an axial flux motor. In the above different types of motors, the spray element 1000 is arranged on the circumferential outer side of the stator assembly 300 .

[0047] Among them, the stator assembly 300 includes an iron core and a winding, and the winding is wound on the axial ends of the iron core and in the stator slots. When the stator assembly 300 is in working state, most of the heat is concentrated on the winding. Therefore, a preferred method is to set the spray part 1000 on the circumferential outside of the winding at both ends of the iron core, and spray the winding in multiple directions to reduce the heat of the winding.

[0048] The material of the spray element 1000 is preferably non-metallic material, which has good insulation properties and can reduce the risk of stator breakdown to the ground.

[0049] As a feasible method, an annular oil passage 410 is opened between the spray piece 1000 and the inner wall of the shell 400, and the annular oil passage 410 is connected to the cooling passage 110. The cooling medium is transported to the cooling passage 110 in the main body 100 of the spray piece 1000 through the annular oil passage 410 in the shell 400, and then sprayed to the surface of the stator assembly 300 through the first spray passage 210 and multiple second spray passages 220 opened in the spray head 200, thereby realizing the cooling of the stator assembly 300.

[0050] In a second aspect, an embodiment of the present application provides a drive assembly, comprising the motor of the first aspect. For example, the drive assembly may be a pure electric assembly or a hybrid power assembly.

[0051] In a third aspect, an embodiment of the present application provides a vehicle, including the drive assembly of the second aspect. For example, the vehicle may be an electric vehicle, a hybrid vehicle, a fuel vehicle, etc. Therefore, the vehicle has all the features and advantages of the electric assembly described above, which will not be repeated here. In general, the power system of the vehicle is reliable, the structure is stable, and the service life is long.

[0052] It should be understood that the terms "center", "axial", "circumferential", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate positions or positional relationships are based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0053] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) to form a technical solution.

Claims

1. A spray element, characterized in that: include: Body and sprinkler head; A body, wherein the body is provided with a cooling channel for a cooling medium to pass through; A spray head is arranged on the body, a plurality of spray channels are provided in the spray head, the plurality of spray channels are all connected with the cooling channel, and an angle exists between the central axes of at least two of the spray channels.

2. The spray element according to claim 1, characterized in that: The body is annular, and the number of the spray heads is multiple. The multiple spray heads are arranged on the inner surface of the body, and the multiple spray heads are arranged at intervals in the circumferential direction of the body.

3. The spray element according to claim 2, characterized in that: In each of the spray heads, at least one spray channel extends toward the center of the body.

4. The spray element according to claim 3, characterized in that: There are multiple cooling channels, and the multiple cooling channels correspond to the multiple spray heads one by one; In each of the spray heads, the spray channel extending toward the center direction of the body is coaxially arranged with the corresponding cooling channel.

5. The spray element according to claim 1, characterized in that: There are multiple cooling channels, and the multiple cooling channels correspond to the multiple spray heads one by one; In each of the spray heads, the sum of the cross-sectional areas of the plurality of spray channels is S1, and the cross-sectional area of ​​the corresponding cooling channel is S2, where S2≥S1.

6. The spray element according to claim 1, characterized in that: The body and the shower head are integrally formed.

7. A motor, characterized in that: The invention comprises the spray element as described in any one of claims 1 to 6.

8. The motor according to claim 7, characterized in that It also includes a stator assembly and a shell, wherein the stator assembly and the spray element are both arranged in the shell, and the body is annular and arranged on the radial outer side of the stator assembly.

9. The motor according to claim 8, characterized in that An annular oil passage is formed between the main body and the inner wall of the shell, and the annular oil passage is communicated with the cooling passage.

10. A drive assembly, characterized in that: Comprising a motor according to any one of claims 7-9.

11. A vehicle, characterized in that: Comprising a drive assembly according to claim 10.

Images