Oil-cooling motor oil circuit shell sleeve and motor
By designing an oil circuit housing sleeve for an oil-cooled motor and utilizing the structure of a spiral annular groove and a spray section, effective cooling of the stator core and windings is achieved, solving the problem of uneven cooling effect in existing technologies and improving the motor's heat dissipation efficiency and ease of production and assembly.
Patent Information
- Application Number
- CN202520127343.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing motor coolant channels provide good cooling for the stator core, but poor cooling for the rotor and windings, and are inconvenient to process.
A housing sleeve for an oil-cooled motor is designed, comprising a spiral annular groove and a spray section. Oil injection holes are located at both ends of the housing sleeve, and coolant is used to cool the stator core and windings through the annular groove and the spray section.
It improves the overall heat dissipation efficiency of the motor, simplifies production and processing, and enhances assembly convenience.
Smart Images
Figure CN223758085U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor structure technical field especially relates to an oil cooling motor oil circuit casing cover and motor. BACKGROUND
[0002] With the development of technology, new energy vehicles have been paid more and more attention, among them, electric vehicles have the advantages of environmental protection and energy saving, low noise, and thus are highly respected by major manufacturers.
[0003] The motor of the new energy vehicle has the advantages of high power density, large output voltage variation range and strong overload capacity, however, the performance of the motor is greatly affected by temperature, in order to improve the electromagnetic load and the performance of the motor, the motor needs to be cooled during operation to prevent the temperature of the motor from being too high.
[0004] In the prior art, a cooling liquid flow channel is generally arranged on the motor shell, and the cooling liquid flows through the cooling liquid flow channel to cool the stator and rotor inside the motor shell, the existing cooling liquid flow channel is mostly spiral structure, and since the cooling liquid flow channel only relies on the stator core, it has a cooling and heat dissipation effect on the stator core, but the cooling and heat dissipation effect on the rotor and winding is poor, in addition, the cooling liquid flow channel in the prior art needs to be opened on the shell, which is inconvenient for production and processing. SUMMARY
[0005] In order to solve the above technical problems, the first purpose of the utility model is to provide an oil cooling motor oil circuit casing cover, which can cool the stator core and winding in cooperation with the motor shell, and the second purpose of the utility model is to provide a motor with good cooling effect and convenient assembly.
[0006] In order to achieve the above first utility model purpose, the utility model adopts the following technical scheme:
[0007] An oil cooling motor oil circuit casing cover, comprising a body in the shape of a hollow cylinder, a plurality of convex edges are arranged on the outer wall of the body, and a spiral-shaped annular groove is formed between the plurality of convex edges, the two ends of the body are annular spray parts, a plurality of oil injection holes A are arranged on the spray parts at intervals, and the annular groove is communicated with the two spray parts at the two ends.
[0008] As a preferred scheme: the annular groove adjacent to the spray part is communicated with the spray part through a guide arc angle.
[0009] As a preferred scheme: the plurality of oil injection holes A are arranged in an arc shape, and the oil injection holes A at the two ends of the arc have an included angle of 60°-180° with the center.
[0010] An oil cooling motor oil circuit shell sleeve, comprising a hollow cylindrical body, two mutually parallel middle partition ridges are arranged on the outer wall of the body, a cooling groove is formed between the two middle partition ridges, a plurality of notches are arranged on each middle partition ridge at intervals, a plurality of guide inclined ridges are uniformly arranged on both sides of the middle partition ridge, and the two ends of the body are spray parts, and a plurality of oil injection holes B are arranged on the spray parts at intervals.
[0011] As a preferred scheme: the plurality of oil injection holes B are arranged in an arc shape, and the oil injection holes B at the two ends of the arc have an included angle of 60°-180° with the center of the circle.
[0012] In order to achieve the above-mentioned second utility model purpose, the utility model adopts the following technical scheme:
[0013] A motor, comprising a shell, an end plate, a stator and a rotor, the stator is fixed in the shell, the rotor is arranged in the stator, and the two ends are rotatably connected with the shell and the end plate respectively, the stator comprises a winding and a stator core, the winding is inserted in the stator core, and the stator core is further fixed with the shell sleeve as claimed in any one of the preceding claims between the shell.
[0014] As a preferred scheme: the shell is further provided with a side wall oil circuit, and one end of the side wall oil circuit is communicated with the ring groove or the cooling groove of the shell sleeve.
[0015] As a preferred scheme: the end plate is further provided with an oil inlet pipe and an oil return pipe, and the oil inlet pipe is communicated with the other end of the side wall oil circuit.
[0016] As a preferred scheme: the shell sleeve is an aluminum sleeve, the shell sleeve and the shell are formed by pressure casting, the shell sleeve and the shell are in interference fit, and the stator core and the shell sleeve are in interference fit.
[0017] Compared with the prior art, the utility model has the beneficial effects that:
[0018] The ring groove is arranged on the shell sleeve, so that the cooling liquid can flow between the shell sleeve and the shell, and the two ends of the shell sleeve are provided with spray parts, the cooling liquid can spray the windings at the two ends through the oil injection holes A, so that the shell sleeve can cool and radiate the stator core and the windings at the same time, and the overall heat dissipation efficiency of the motor is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] The drawings accompanying the specification provide further understanding of the present application, the schematic embodiments of the present application and the description thereof serve to explain the present application, and do not constitute a limitation on the present application.
[0020] Figure 1 It is a schematic diagram of the overall structure of the motor of the utility model;
[0021] Figure 2It is the cross section structure schematic view of the motor of the utility model;
[0022] Figure 3 It is the cross section structure schematic view of the shell and the shell sleeve of the utility model;
[0023] Figure 4 And Figure 5 It is the structure schematic view of two different angles of the first shell sleeve of the utility model;
[0024] Figure 6 It is the structure schematic view of the second shell sleeve of the utility model.
[0025] The reference signs are: 1, stator core;2, winding;3, shell sleeve;30, convex rib;31, ring groove;32, oil injection hole A;33, guide arc angle;34, spraying part;300, middle part separating convex rib;301, guide inclined convex rib;302, oil injection hole B4, shell;41, side wall oil way;42, electric control box body;5, end plate;50, oil inlet pipe;51, oil return line;6, rotating shaft;7, rotor core. DETAILED DESCRIPTION
[0026] It should be noted that the following detailed description is exemplary and is intended to provide further description of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0027] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.
[0028] In addition, in the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.
[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0033] like Figures 1 to 5 As shown, an electric motor includes a housing 4, an end plate 5, a stator, and a rotor. One end of the housing 4 is provided with an electrical control box 42, inside which a motor controller is fixed. The other end of the housing 4 is fixed to the end plate 5 by bolts. The stator is fixed inside the housing 4, and the rotor is disposed inside the stator. The rotor includes a shaft 6 and a rotor core 7. The two ends of the shaft 6 are rotatably connected to the housing 4 and the end plate 5 respectively via bearings 11. The stator includes windings 2 and a stator core 1. The winding 2 is inserted into the stator core 1. The stator core 1 and the housing 4 are also fixed with a housing sleeve 3. The housing sleeve includes a body that is integrally hollow cylindrical. The outer wall of the body is provided with multiple protruding ridges 30. The multiple protruding ridges 30 form spiral interconnected annular grooves 31. The two ends of the body are annular spray sections 34. Multiple oil spray holes A32 are provided on the spray section 34 at intervals. The annular grooves 31 adjacent to the spray section 34 are connected to the spray section 34 through guide arc angles 33.
[0034] The structure can integrate the oil injection rings at both ends of the common stator shell on the shell sleeve 3, and the structure is more compact, the oil injection holes A on the shell sleeve 3 are multiple and can be arranged at intervals to surround the shell sleeve 3 once, or can be formed in the form of only upper end oil injection, that is, the multiple oil injection holes A32 are arranged in an arc shape, and the oil injection holes A32 at both ends of the arc shape have an included angle of 60°-180° with the center of the circle.
[0035] The shell 4 is further provided with a side wall oil passage 41, one end of the side wall oil passage 41 is communicated with the ring groove 31 or the cooling groove of the shell sleeve 3. The end plate 5 is further provided with an oil inlet pipe 50 and an oil return pipe 51, the oil inlet pipe 50 is communicated with the other end of the side wall oil passage 41. The oil pump and the oil tank are further arranged between the oil inlet pipe and the oil return pipe, so that the cooling oil can circulate in and out of the motor.
[0036] As shown in Figure 6 In other embodiments, the shell sleeve includes a hollow cylindrical body, two parallel middle separation ribs 300 are arranged on the outer wall of the body, a cooling groove is formed between the two middle separation ribs 300, multiple notches are arranged at intervals on each middle separation rib 300, multiple guide inclined ribs 301 are uniformly arranged at intervals on both sides of the middle separation rib 300, and the two ends of the body are spray parts 34, multiple oil injection holes B302 are arranged at intervals on the spray parts 34.
[0037] Similarly, the oil injection holes B on the shell sleeve in the above structure are also multiple and can be arranged at intervals to surround the shell sleeve 3 once, or can be formed in the form of only upper end oil injection, that is, the multiple oil injection holes B302 are arranged in an arc shape, and the oil injection holes B302 at both ends of the arc shape have an included angle of 60°-180° with the center of the circle.
[0038] The shell sleeve of the utility model is provided with a ring groove, the cooling liquid can flow between the shell sleeve and the shell, and the two ends of the shell sleeve are provided with spray parts, the cooling liquid can spray the windings at both ends through the oil injection holes A, so that the shell sleeve can cool and radiate the stator core and the windings at the same time, and the overall heat dissipation efficiency of the motor is improved.
[0039] In addition, the shell sleeve of the utility model is an aluminum sleeve, the shell sleeve and the shell are formed by pressure casting, the shell sleeve and the shell are in interference fit, and the stator core and the shell sleeve are in interference fit. Therefore, the shell sleeve is convenient to produce, and the assembly with the motor is also relatively simple, which is beneficial to improve the production efficiency.
[0040] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0041] Although the embodiments of the present application have been shown and described above, it should be understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application without departing from the principles and spirits of the present application. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above-described embodiments still belong to the scope of the technical scheme of the present application.
Claims
1. An oil-cooled electric machine oil circuit housing sleeve, characterized by: The body is hollow cylindrical, and the outer wall of the body is provided with multiple ridges (30), and the multiple ridges (30) form spiral intercommunication annular grooves (31) between the multiple ridges (30), and the two ends of the body are annular spray parts (34), and multiple oil injection holes A (32) are arranged on the spray parts (34) at intervals, and the annular grooves (31) are communicated with the two spray parts (34) at the two ends.
2. An oil-cooled electric machine oil circuit housing sleeve according to claim 1, characterized in that: The annular grooves (31) adjacent to the spray parts (34) are communicated with the spray parts (34) through guide arc angles (33).
3. An oil-cooled electric machine oil circuit housing sleeve according to claim 1, characterized in that: The multiple oil injection holes A (32) are arranged in an arc shape, and the oil injection holes A (32) at the two ends of the arc shape have an included angle of 60°-180° with the center of the circle.
4. An oil-cooled electric machine oil circuit housing sleeve, characterized by: The body is hollow cylindrical, and the outer wall of the body is provided with two parallel middle partition ridges (300), and the two middle partition ridges (300) form cooling grooves between the two middle partition ridges (300), and multiple notches are arranged on each middle partition ridge (300) at intervals, and multiple guide inclined ridges (301) are uniformly arranged on the two sides of the middle partition ridges (300), and the two ends of the body are spray parts (34), and multiple oil injection holes B (302) are arranged on the spray parts (34) at intervals.
5. An oil-cooled electric machine oil circuit housing sleeve according to claim 1, characterized in that: The multiple oil injection holes B (302) are arranged in an arc shape, and the oil injection holes B (302) at the two ends of the arc shape have an included angle of 60°-180° with the center of the circle.
6. An electric machine comprising a housing (4), an end plate (5), a stator and a rotor, the stator being fixed in the housing (4), the rotor being arranged in the stator and being rotatably connected to the housing (4) and the end plate (5) at both ends, the stator comprising a winding (2) and a stator core (1), the winding (2) being inserted in the stator core (1), characterized in that: The stator core (1) and the shell (4) are further fixed with the shell sleeve (3) as claimed in any one of claims 1 to 5.
7. An electric machine according to claim 6, characterized in that: The shell (4) is further provided with a side wall oil passage (41), and one end of the side wall oil passage (41) is communicated with the annular groove (31) or the cooling groove of the shell sleeve (3).
8. An electric machine according to claim 7, characterized in that: The end plate (5) is further provided with an oil inlet pipe (50) and an oil return pipe (51), and the oil inlet pipe (50) is communicated with the other end of the side wall oil passage (41).
9. An electric machine as recited in claim 6, characterized in that: The shell sleeve (3) is an aluminum sleeve, the shell sleeve (3) and the shell (4) are formed by equalizing pressure casting, the shell sleeve (3) and the shell (4) are in interference fit, and the stator core (1) and the shell sleeve (3) are in interference fit.