Oil guide ring for motor and motor
By setting spray ports and oil return ports on the outer periphery of the oil guide ring body and using baffles made of insulating material, the problem of making the motor lightweight and compact has been solved, and the axial length and weight of the motor have been shortened.
Patent Information
- Application Number
- CN202520166153.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The existing oil guide ring structure makes it difficult to achieve lightweight and compact motors, mainly because the spray holes are evenly distributed in the circumferential direction and the oil return is in the axial direction, which increases the length of the motor assembly and the size of the housing.
An oil guide ring structure is designed, with the spray port and oil return port located on the outer periphery of the oil guide ring body. The cooling oil returns in the radial direction, shortening the oil return path. Combined with the baffle part of the insulating material, the gap between the winding end and the housing is reduced, thereby achieving the lightweight and compact design of the motor.
By shortening the axial length of the motor assembly through the radial oil return path, the weight and cost of the motor are reduced, ensuring that the motor assembly does not interfere with each other, meeting design requirements, and achieving a lightweight and compact motor.
Smart Images
Figure CN223809665U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of oil guide ring structure, and particularly relates to an oil guide ring for a motor and the motor. BACKGROUND
[0002] With the rapid development of the domestic new energy vehicle market, the competition in technology and cost becomes particularly fierce. As one of the core components of the new energy vehicle, the motor, its technological innovation and cost control become increasingly important. At the same time, the intelligentization and comfort requirements of the whole vehicle are continuously improved, which significantly increases the number of parts installed on the whole vehicle, thereby putting forward more stringent requirements for the arrangement space of the motor assembly. Therefore, how to design the structure of each part inside the motor to occupy a smaller space in the assembly has become a key problem to be solved at present.
[0003] At present, the conventional oil guide ring structure is usually uniformly distributed with spray holes in the circumferential direction, and returns oil in the axial direction, which will cause the length of the motor assembly to increase, and at the same time, the upper shell of the motor assembly also grows, thereby causing the motor to be difficult to realize lightweight and compactness. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the purpose of the present application is to provide an oil guide ring for a motor and the motor, so as to solve the problem that the existing oil guide ring structure causes the motor to be difficult to realize lightweight and compactness.
[0005] According to the first aspect of the present application, an oil guide ring for a motor is provided, wherein the oil guide ring for the motor comprises: an oil guide ring body; a spraying area arranged on a part of the outer circumferential side of the oil guide ring body, the spraying area having a spraying port arranged through the outer circumferential side wall of the oil guide ring body; and an oil return area arranged on the outer circumferential side outside the spraying area of the oil guide ring body, the oil return area having an oil return port arranged through the outer circumferential side wall of the oil guide ring body.
[0006] Preferably, the outer circumferential side of the oil guide ring body is provided with an oil path at a position corresponding to the spraying area, and the spraying port is arranged in the oil path.
[0007] Preferably, the outer circumferential side of the oil guide ring body is formed with a radial outward protruding blocking rib, and the blocking rib blocks both ends of the oil path to separate the spraying area from the oil return area.
[0008] Preferably, the outer circumferential side of the oil guide ring body is formed with a first annular protruding edge and a second annular protruding edge protruding radially outward, and the first annular protruding edge and the second annular protruding edge form the oil path.
[0009] Preferably, a plurality of limiting protrusions protruding radially outward are arranged on the first annular protrusion and / or the second annular protrusion, and the plurality of limiting protrusions are distributed in a circumferential direction.
[0010] Preferably, the material of the oil guide ring is an insulating material; the oil guide ring further comprises a baffle portion, the baffle portion is annular, an outer periphery of the baffle portion is connected to one end of the oil guide ring body in an axial direction, and an inner periphery of the baffle portion is formed with a limiting protrusion protruding in the axial direction to the other end of the oil guide ring body.
[0011] Preferably, the outer periphery of the baffle portion is integrally arranged with the one end of the oil guide ring body in the axial direction.
[0012] Preferably, a plurality of the spray openings are arranged in rows in the axial direction, and a plurality of rows of the spray openings are arranged in the circumferential direction in the spray area.
[0013] Preferably, a plurality of the oil return openings are arranged in the circumferential direction in the oil return area.
[0014] According to the second aspect of the utility model, a motor is provided, wherein the motor comprises a winding, a stator, a housing and an oil guide ring as described above, the winding and the stator are arranged in the housing, two ends of the oil guide ring in the axial direction are respectively in abutment with the stator and the housing, and the winding end is arranged in the oil guide ring.
[0015] The motor oil guide ring and the motor according to the embodiments of the utility model have the following beneficial effects:
[0016] The motor oil guide ring sets the oil return opening and the spray opening on the outer periphery side of the oil guide ring body, the cooling oil is returned in the radial direction, the oil return path is shortened in the axial direction, thereby the axial length of the motor assembly can be shortened, the axial size of the motor housing is reduced, the weight and the cost of the motor are reduced, and the motor is lightweight and compact.
[0017] After the insulation of the baffle portion, the gap between the winding end and the end surface of the housing can be greatly reduced, the design requirements can be met without assembly interference, the envelope of the housing and the motor assembly is small, and the lightweight and compactness of the motor assembly are improved.
[0018] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings.
[0020] Figure 1 is a schematic view of an oil guide ring for a motor according to the present application.
[0021] Figure 2 is a schematic view of an oil guide ring for a motor according to the present application from another angle.
[0022] Figure 3 is a sectional view of an oil guide ring for a motor and the motor according to the present application.
[0023] Reference signs: 1 - oil guide ring main body; 10 - limiting protrusion; 11 - first annular protrusion; 12 - second annular protrusion; 13 - blocking rib; 14 - baffle part; 140 - limiting protrusion; 2 - spraying area; 20 - spraying port; 21 - oil passage; 3 - oil return area; 30 - oil return port; 4 - winding; 5 - stator; 6 - housing. DETAILED DESCRIPTION
[0024] The following detailed description is provided to help the reader understand the method, device and / or system described herein. However, various changes, modifications and equivalents can become apparent to those skilled in the art after understanding the disclosure provided herein. For example, the order of the operations described herein is merely an example, and is not limited to the order set forth herein, except for operations that must occur in a specific order. In addition, the description of features known in the art can be omitted in order to improve clarity and conciseness.
[0025] The features described herein can be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to show some of the many ways in which the methods, devices and / or systems described herein can be implemented after understanding the disclosure provided herein.
[0026] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or terms similar thereto, it is understood that an intervening element may be present or absent. For example, if a layer is described as being "on" a substrate, it is understood that an intervening layer may be present or absent. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," "directly on top of," or terms similar thereto, it is understood that no intervening element is present.
[0027] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.
[0028] Although terms such as "first" and "second" and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in one example described herein can also be referred to as a second component, assembly, region, layer or section in another example without departing from the teachings of the examples.
[0029] For ease of description, spatial terms such as "on," "upper," "below," and "lower" can be used with respect to the orientation of one element with respect to another element as illustrated in the figures. Such spatial terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a component described as being "on" or "upper" relative to another component would then be oriented "below" or "lower" relative to the other component. Accordingly, the term "on" encompasses both an "on" and "under" orientation depending on the spatial orientation of the device. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate modification to the spatial terms would be made to those of skill in the art in light of the drawings.
[0030] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" are listed means of mentioning the presence of stated features, integers, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, operations, components, elements, and / or combinations thereof.
[0031] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur during manufacturing.
[0032] Features of the examples described herein can be combined with one another in any manner, as would be apparent to one of skill in the art after understanding the disclosure provided herein. Furthermore, although examples described herein have various configurations, other configurations are possible as would be apparent to one of skill in the art after understanding the disclosure provided herein.
[0033] As Figures 1 to 3 indicated, a first aspect of the present application provides an oil guide ring for an electric machine, the oil guide ring for an electric machine comprising an oil guide ring body 1, a spraying area 2, and an oil return area 3.
[0034] In the following description, reference is made to the Figures 1 to 3 The specific structure of the above components of the oil guide ring for an electric machine and the connection relationship of the above components are specifically described.
[0035] As Figures 1 to 3 indicated, in an embodiment, the oil guide ring body 1 can be formed in a ring shape, and is configured to be sleeved on the outer portion of the end portion of the winding 4. The spraying area 2 can be arranged on the outer circumferential side of the oil guide ring body 1. The oil guide ring body 1 can be provided with a spraying port 20 at the spraying area 2. The spraying port 20 is configured to spray the cooling oil to the inner side of the oil guide ring body 1. The spraying area 2 can be located at the top portion and the middle portion of the oil guide ring body 1 (i.e., the top portion and the middle portion of the oil guide ring body 1 in the normal installation state as Figure 3 indicated), so that the oil guide ring body 1 can spray oil to cool the top portion and the middle portion of the winding 4. The end portion bottom of the winding 4 can be cooled by the oil drops flowing down from the upper portion.
[0036] The oil return area 3 can be arranged on the outer circumferential side of the oil guide ring body 1 except the spraying area 2. The oil guide ring body 1 can be provided with an oil return port 30 in the oil return area 3, which is configured to flow the cooling oil back to the electric machine cavity. The oil return area 3 can be located at the bottom portion of the oil guide ring body 1 (i.e., the bottom portion of the oil guide ring body 1 in the normal installation state as Figure 3The bottom in the normal installation state) so that the cooling oil can flow out of the oil return port 30 under the action of gravity to participate in the circulation again.
[0037] Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1. Figure 1 and Figure 2 Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1.
[0038] Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1. Figure 1 and Figure 2 Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1.
[0039] In addition, the interval of the two rows of spraying ports 20 located at the top of the oil guide ring body 1 can be smaller than the interval of the two rows of spraying ports 20 located at the middle of the oil guide ring body 1. Since the cooling oil at the top can flow through the middle of the winding 4 during the flowing process, such arrangement can make the cooling effect of the winding 4 more uniform. Further preferably, as shown in the embodiments, the interval of the two rows of spraying ports 20 located at the middle of the oil guide ring body 1 can be greater than the interval of the two rows of spraying ports 20 located at the bottom of the oil guide ring body 1. Figure 1 and Figure 2 Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1.
[0040] Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1. Figure 1 and Figure 2 Preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1.
[0041] Further preferably, as shown in the embodiments, the length of the spraying area 2 can be greater than half of the circumference of the oil guide ring body 1. Figure 1 and Figure 2As shown in the embodiments, the outer circumferential side of the oil guide ring body 1 can be formed with a radial outwardly protruding rib 13. Specifically, the rib 13 can be formed in a strip shape. The extending direction of the rib 13 can be parallel to the axial direction of the oil guide ring body 1. The rib 13 is used to separate the spraying area 2 and the oil return area 3, i.e. two ribs 13 are respectively arranged at the two ends of the spraying area 2. The rib 13 can block the oil path 21, so as to avoid the cooling oil flowing to the oil return area 3 and directly flowing back into the motor cavity from the oil return port 30, thereby achieving the pressure building of the oil path 21.
[0042] As shown in the embodiments, Figure 1 and Figure 2 In a feasible implementation, the outer circumferential side of the oil guide ring body 1 is formed with a radial protruding first annular protrusion 11 and a second annular protrusion 12. Specifically, the first annular protrusion 11 can be formed at the end of the oil guide ring body 1 away from the stator 5, and the second annular protrusion 12 can be formed at the end of the oil guide ring body 1 close to the stator 5. The first annular protrusion 11 and the second annular protrusion 12 protrude from the outer circumferential surface of the oil guide ring body 1. The oil path 21 is formed between the first annular protrusion 11 and the second annular protrusion 12 (i.e. the first annular protrusion 11 and the second annular protrusion 12 enclose the oil path 21) to limit the cooling oil therein.
[0043] As shown in the embodiments, Figure 1 and Figure 2 In a feasible implementation, a radial outwardly protruding limiting block 10 can be further arranged on the first annular protrusion 11 and / or the second annular protrusion 12 (i.e. at least one of the first annular protrusion 11 and the second annular protrusion 12 is provided with the limiting block 10). Specifically, as shown in the embodiments, the limiting block 10 is arranged on the second annular protrusion 12. The limiting block 10 can be in a cuboid shape. The limiting block 10 protrudes from the end surface of the second annular protrusion 12. A plurality of limiting blocks 10 can be arranged on the second annular protrusion 12 at intervals in the circumferential direction, and the shell 6 of the motor can be provided with a groove at the corresponding position, so that after the oil guide ring for the motor is installed at the end of the winding 4, the oil guide ring body 1 cannot rotate in the circumferential direction, thereby avoiding the misalignment of the oil return area 3 and the spraying area 2.
[0044] In addition, as shown in the embodiments, Figures 1 to 3 In a feasible implementation, the oil guide ring can further include a baffle portion 14. Specifically, the baffle portion 14 can be an annular baffle. The outer circumferential side of the baffle portion 14 can be connected to one end of the oil guide ring body 1 in the axial direction.
[0045] The baffle part 14 is arranged at the end of the oil guide ring body 1 away from the stator 5 to separate the winding 4 end from the housing 6. The inner periphery of the baffle part 14 can be formed with a limiting protruding edge 140 protruding axially to the other end of the oil guide ring body, so that the end of the winding 4 is defined between the limiting protruding edge 140 and the oil guide ring body 1.
[0046] In the embodiment, the material of the oil guide ring for the motor is an insulating material, that is, the oil guide ring body 1 and the baffle part 14 are both made of an insulating material, and the oil guide ring body 1 and the baffle part 14 can be integrally formed. Such arrangement can avoid conduction between the winding 4 and the housing 6, thereby ensuring the electrical safety gap and further shortening the axial length of the motor. Preferably, the insulating material can be plastic.
[0047] In addition, as shown in Figure 3 According to the second aspect of the utility model, a motor is provided, which comprises a winding 4, a stator 5, a housing 6 and an oil guide ring as described above. The winding 4 and the stator 5 are arranged in the housing 6. The two ends of the oil guide ring body 1 in the axial direction can abut against the stator 5 and the housing 6 respectively, thereby positioning the oil guide ring body 1 in the axial direction. The end of the winding 4 is surrounded by the inner side of the oil guide ring body 1.
[0048] During use, the oil guide ring can spray cooling oil to the upper part and the middle part of the winding 4 end, and the cooling oil can flow back to the motor cavity through the oil return port 30 after cooling the winding 4. Since the oil return port 30 and the spray port 20 are both arranged on the outer periphery side of the oil guide ring body 1, the cooling oil flows back in the radial direction, so that the oil return path is shortened in the axial direction, thereby shortening the axial length of the motor assembly and reducing the axial size of the housing 6 of the motor, thereby reducing the weight and cost of the motor. In addition, the oil guide ring can insulate the winding 4 end from the housing 6 through the baffle part 14. After insulation by the baffle part 14, the gap between the winding 4 end and the end face of the housing 6 can be greatly reduced, which ensures that no assembly interference occurs and meets the design requirements, so that the envelope of the housing 6 and the motor assembly is smaller, which plays a greater role in the lightweight and compactness of the motor assembly.
[0049] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An oil guide ring for an electric machine, characterized by comprising: The oil guide ring for the motor comprises: an oil guide ring body; a spraying area provided on a part of the outer periphery of the oil guide ring body, the spraying area having a spraying opening provided through the outer peripheral wall of the oil guide ring body; an oil return area provided on the outer periphery outside the spraying area of the oil guide ring body, the oil return area having an oil return opening provided through the outer peripheral wall of the oil guide ring body.
2. The oil guide ring for an electric motor according to claim 1, characterized by The outer periphery of the oil guide ring body is provided with an oil path at a position corresponding to the spraying area, and the spraying opening is provided in the oil path.
3. The oil guide ring for an electric motor according to claim 2, characterized by The outer periphery of the oil guide ring body is formed with a radial outwardly protruding blocking rib, which blocks both ends of the oil path to separate the spraying area from the oil return area.
4. The oil guide ring for an electric motor according to claim 2, characterized by The outer periphery of the oil guide ring body is formed with a first annular protrusion and a second annular protrusion protruding radially outwardly, and the first annular protrusion and the second annular protrusion enclose the oil path.
5. The oil guide ring for an electric motor according to claim 4, characterized by A plurality of radial outwardly protruding limiting protrusions are provided on the first annular protrusion and / or the second annular protrusion, and the plurality of limiting protrusions are distributed in a circumferential direction.
6. The oil guide ring for an electric motor according to claim 1, characterized by The material of the oil guide ring is an insulating material. The oil guide ring further comprises a baffle part, which is annular, and the outer periphery of the baffle part is connected to one end of the oil guide ring body in an axial direction, and the inner periphery of the baffle part is formed with a limiting protrusion protruding axially towards the other end of the oil guide ring body.
7. The oil guide ring for an electric motor according to claim 6, characterized by The outer periphery of the baffle part is integrally provided with one end of the oil guide ring body in an axial direction.
8. The oil guide ring for an electric motor according to claim 1, characterized by A plurality of the spraying openings are arranged in an axial direction, and a plurality of rows of the spraying openings are arranged in a circumferential direction.
9. The oil guide ring for an electric motor according to claim 1, characterized by A plurality of the oil return openings are arranged in a circumferential direction.
10. An electric machine characterized by The motor comprises a winding, a stator, a housing, and the oil guide ring according to any one of claims 1 to 9, the winding and the stator are arranged in the housing, and the two ends of the oil guide ring in an axial direction are respectively in abutment with the stator and the housing, and the end of the winding is arranged in the oil guide ring.