Cooling oil injection ring, motor and vehicle

Abstract

The utility model provides a cooling oil injection ring, a motor and a vehicle, and relates to the technical field of vehicle parts. The cooling oil injection ring comprises a first ring section and a second ring section, the first ring section and the second ring section are connected end to end to form an annular structure, the inner diameter of the first ring section is larger than that of the second ring section, the second ring section is provided with an oil duct, and an oil injection hole communicated with the oil duct is formed in the inner side wall of the second ring section. According to the cooling oil injection ring, aiming at the characteristic that the radial size of the winding end part is non-uniformly distributed in the circumferential direction, the structure of the whole oil injection ring is optimized by adopting a sectional type variable inner diameter structural design, accurate adaptation to the winding end part is realized, the trafficability of the winding end part is ensured, and the service life of the oil injection ring is prolonged. And the problem that the oil injection ring cannot be arranged due to insufficient radial thickness of the oil injection ring is also avoided.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, specifically to a cooling oil injection ring, a motor, and a vehicle. Background Technology

[0002] With the development of the new energy industry, electric drive systems are developing rapidly. The energy efficiency of electric drive systems directly affects the efficiency and driving range of new energy electric vehicles. Electric drive system motors generate a large amount of heat during operation, mainly from coil resistance losses and iron losses. This heat causes the motor temperature to rise, thus affecting the motor's efficiency and lifespan. Therefore, an effective cooling system is a key part of motor design. Currently, oil cooling is typically achieved by installing an oil injection ring inside the motor.

[0003] In related technologies, the fuel injection ring is mostly designed as a ring structure with a uniform radial thickness. Its outer wall is cylindrical and abuts against the inner wall of the motor housing, while its inner wall is cylindrical with fuel injection holes evenly spaced around its circumference. In use, the fuel injection ring is fitted onto the end of the motor winding, allowing the end of the motor winding to pass through. However, some motor winding ends exhibit uneven circumferential radial dimensions, meaning some areas have smaller radial dimensions while others have relatively larger ones. This results in a small local gap between the motor winding end and the inner wall of the motor housing, making it impossible to install the fuel injection ring. Utility Model Content

[0004] The problem solved by this invention is to optimize the structure of the fuel injection ring and avoid the inability to arrange the fuel injection ring.

[0005] To solve the above problems, this utility model provides a cooling oil injection ring, a motor, and a vehicle.

[0006] In a first aspect, the present invention provides a cooling oil injection ring, comprising a first ring segment and a second ring segment, wherein the first ring segment and the second ring segment are connected end to end to form an annular structure, the inner diameter of the first ring segment is larger than the inner diameter of the second ring segment, the second ring segment is provided with an oil passage, and the inner sidewall of the second ring segment is provided with an oil injection hole communicating with the oil passage.

[0007] Optionally, the oil passage extends from one end of the second ring segment to the other end along the circumference of the annular structure, and the plurality of oil injection holes are spaced apart from one end of the second ring segment to the other end along the circumference of the annular structure.

[0008] Optionally, the oil passage is located inside the second annular segment.

[0009] Optionally, the second ring segment includes a ring segment body and a first cover plate. The ring segment body has a first slot on one end face along the axial direction of the annular structure. The first cover plate is provided at the opening of the first slot, and the first cover plate and the first slot form the oil passage.

[0010] Optionally, the second ring segment is provided with an oil inlet structure on one end face along the axial direction of the annular structure, the oil inlet structure being used to introduce oil into the oil passage.

[0011] Optionally, the oil inlet structure includes an oil inlet pipe and a first support block, the first support block being disposed in the second ring segment; the oil inlet pipe is disposed in the first support block, and a chamber is disposed in the first support block and the corresponding second ring segment, the chamber being connected to the oil inlet pipe and the oil passage.

[0012] Optionally, the second ring segment and the first support block are integral structures, and the outer wall surfaces of the first support block and the corresponding second ring segment are provided with a second slot. The slot opening of the second slot is provided with a second cover plate, and the second cover plate and the second slot form the cavity.

[0013] Optionally, the second ring segment is provided with an installation structure on one end face along the axial direction of the annular structure. The installation structure includes an assembly bracket and / or a positioning bracket. The assembly bracket is provided with an installation hole for connecting to the motor housing. The positioning bracket is provided with a positioning hole for assembling and positioning with the motor housing.

[0014] Secondly, this utility model provides an electric motor, including the aforementioned cooling oil injection ring.

[0015] Thirdly, this utility model provides a vehicle including the aforementioned motor.

[0016] The beneficial effects of this utility model's cooling oil spray ring are:

[0017] The cooling oil injection ring is an annular structure composed of a first ring segment and a second ring segment, with the inner diameter of the first ring segment being larger than that of the second ring segment. The design concept lies in the fact that by dividing the annular structure into different segments, the inner diameter (i.e., the inner wall size) of each segment can be flexibly adjusted according to actual needs, while ensuring that the winding ends can pass through smoothly. This breaks through the limitation in traditional designs where the inner diameter of the annular structure is entirely restricted to the maximum radial dimension of the winding ends.

[0018] Furthermore, the second ring segment is provided with oil channels, and the inner wall of the second ring segment has oil injection holes communicating with the oil channels. These injection holes are used to spray oil into the cavity of the annular structure to achieve winding cooling and internal motor lubrication. In contrast, the first ring segment does not have oil injection holes, and therefore does not require the design of corresponding oil channels. This design has two advantages: firstly, because the inner diameter of the second ring segment is smaller, its radial thickness is relatively larger, providing space for the arrangement of oil injection holes and oil channels; secondly, by eliminating the oil injection holes and corresponding oil channels in the first ring segment, it is easier to reduce the radial thickness of the first ring segment, thereby meeting the passage requirements of the largest radial dimension at the winding end. Especially when the inner diameter of the motor housing is small, the radial thickness of the first ring segment can be designed to be very small, allowing the motor to still accommodate an oil injection ring.

[0019] In summary, this cooling oil injection ring addresses the non-uniform distribution of the radial dimensions of the winding ends in the circumferential direction by employing a segmented variable inner diameter structure design. This optimizes the structure of the entire oil injection ring, achieving precise adaptation to the winding ends. It not only ensures the passability of the winding ends but also effectively avoids the problem mentioned in the background art where insufficient radial thickness of the oil injection ring prevents its placement. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the welded end of a flat wire motor winding.

[0021] Figure 2 This is a schematic diagram of the overall structure of the cooling oil spray ring according to an embodiment of the present invention.

[0022] Figure 3 This is a first-view perspective view of the split structure of the cooling oil spray ring according to an embodiment of the present invention.

[0023] Figure 4 This is a second-view perspective view of the split structure of the cooling oil spray ring according to an embodiment of the present invention.

[0024] Figure 5 This is an internal view of the motor end cover of the cooling oil spray ring according to an embodiment of the present invention.

[0025] Figure 6 This is an external view of the motor end cover of the cooling oil spray ring according to an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 11. First ring segment; 12. Second ring segment; 121. Ring segment body; 122. First cover plate; 2. Oil injection hole; 3. Oil passage; 4. Oil inlet structure; 41. Oil inlet pipe; 42. First support block; 421. Chamber; 422. Second cover plate; 51. Assembly bracket; 511. Mounting hole; 52. Positioning bracket; 521. Positioning hole; 61. Lead-out copper busbar; 62. End cap. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0029] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0030] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Several" refers to one or more "one or more".

[0031] In addition, the "axial" and "radial" mentioned in this utility model refer to the axial and radial directions of the ring structure; "inner" refers to the side closer to the axis or center of the ring structure, and "outer" refers to the side farther away from the axis or center of the ring structure.

[0032] In related technologies, the radial dimensions at the ends of motor windings exhibit a circumferentially uneven distribution. Taking a flat-wire motor as an example, such as... Figure 1 , Figure 5 and Figure 6As shown, the welding end of the flat wire motor winding is generally cylindrical, but it has multiple lead-out copper busbars 61. Some of these lead-out copper busbars 61 protrude outwards from the winding, resulting in a locally larger radial dimension at the welding end. Typically, the oil injection ring of a flat wire motor is mounted on the motor housing, and the flat wire winding is mounted on the stator core. During installation, the welding end of the flat wire winding needs to pass through the inner hole of the oil injection ring. Therefore, the inner diameter of the oil injection ring needs to be designed to be large enough to allow the welding end with the outwardly protruding lead-out copper busbars to pass through axially. However, if the outer diameter of the oil injection ring remains unchanged, increasing its inner diameter will result in insufficient radial thickness, making it difficult to arrange oil passages, and ultimately preventing the installation of the oil injection ring altogether.

[0033] like Figure 2 As shown, this utility model embodiment provides a cooling oil injection ring, including a first ring segment 11 and a second ring segment 12. The first ring segment 11 and the second ring segment 12 are connected end to end to form a ring structure. The inner diameter of the first ring segment 11 is larger than the inner diameter of the second ring segment 12. The second ring segment 12 is provided with an oil passage 3, and the inner sidewall of the second ring segment 12 is provided with an oil injection hole 2 communicating with the oil passage 3.

[0034] In this embodiment, the first ring segment 11 and the second ring segment 12 are arranged coaxially, and their common axis is the central axis of the annular structure. The statement that "the inner diameter of the first ring segment 11 is greater than the inner diameter of the second ring segment 12" specifically means that the perpendicular distance from any point on the inner wall of the first ring segment 11 to the common axis (i.e., the radius of that point) is greater than the perpendicular distance from any point on the inner wall of the second ring segment 12 to the common axis (i.e., the radius of the corresponding point on the second ring segment 12). In other words, from a geometric perspective, the first ring segment 11 is wider than the second ring segment 12 throughout its entire inner diameter range.

[0035] The cooling oil spray is a ring structure composed of a first ring segment 11 and a second ring segment 12, with the inner diameter of the first ring segment 11 being larger than that of the second ring segment 12. The design concept is that by dividing the ring structure into different segments, the inner diameter of each segment—that is, the radius of each point on the inner wall—can be flexibly adjusted according to actual needs, while ensuring that the winding ends can pass through smoothly. This breaks through the limitation in traditional designs where the inner diameter of the ring structure is entirely restricted to the maximum radial dimension of the winding ends.

[0036] Specifically, the inner diameter of the first ring segment 11 is larger, allowing the portion of the winding end with a larger radial dimension to pass through; while the inner diameter of the second ring segment 12 is smaller, allowing the portion of the winding end with a smaller radial dimension to pass through. That is, the inner diameter of each ring segment is designed based on the radial dimension of the winding end region corresponding to that ring segment when the winding end passes through the inner hole of the annular structure. This design ensures the passage of the winding end through the annular structure, thus adapting to situations where the radial dimension of the winding end is unevenly distributed in the circumferential direction.

[0037] In addition, the second ring segment 12 is provided with an oil passage 3, and the inner wall of the second ring segment 12 is provided with an oil injection hole 2 communicating with the oil passage 3. The oil injection hole 2 is used to spray oil into the inner side of the annular structure to achieve winding cooling and internal lubrication of the motor. In contrast, the first ring segment 11 does not have an oil injection hole 2, so there is no need to design a corresponding oil passage 3. This design has two advantages: first, because the inner diameter of the second ring segment 12 is small, its radial thickness is relatively large, providing space for the arrangement of the oil injection hole 2 and the oil passage 3; second, by eliminating the oil injection hole 2 and the corresponding oil passage design of the first ring segment 11, it is easier to reduce the radial thickness of the first ring segment 11, and thus the inner diameter of the first ring segment 11 can be designed to be larger, thereby meeting the passage requirements of the largest radial dimension part at the end of the winding. Especially when the inner diameter of the motor housing is small, the radial thickness of the first ring segment 11 can be designed to be very small, allowing the motor to still arrange an oil injection ring.

[0038] In summary, this cooling oil injection ring addresses the non-uniform distribution of the radial dimensions at the winding ends in the circumferential direction by employing a segmented variable inner diameter structure design. This optimizes the overall structure of the oil injection ring, achieving precise adaptation to the winding ends. It not only ensures the passability of the winding ends but also avoids the problem mentioned in the background art where insufficient radial thickness of the oil injection ring prevents its placement.

[0039] It should be noted that the first ring segment 11 is designed to omit the oil injection hole 2 and its related oil passage configuration, but it is retained to maintain the overall integrity of the annular structure for ease of installation and positioning. Furthermore, due to the oil-throwing effect of the motor rotor during rotation, the larger radially sized portions at the winding ends will still come into contact with the oil sprayed from the oil injection hole 2. Regarding the quantity of the first ring segment 11 and the second ring segment 12, it can be one or a combination of multiple segments, depending on actual requirements. In typical application scenarios, such as... Figure 1 As shown, the radial dimension of the winding end is divided into two main regions: one is the portion containing the protruding copper busbar 61, which has a relatively large radial dimension; the other is the remaining portion outside the protruding copper busbar 61. For this situation, typically only one first ring segment 11 and one second ring segment 12 are needed to meet the arrangement requirements of the cooling oil injection ring. However, when dealing with winding ends of certain special structures, if there are multiple regions with large radial dimensions, the number of first ring segments 11 and second ring segments 12 needs to be increased accordingly to achieve precise fit and efficient cooling.

[0040] Optionally, the ring structure consists of a first ring segment 11 and a second ring segment 12.

[0041] In this optional embodiment, considering the structural characteristics of the motor winding ends in actual application scenarios, namely that most motor winding ends only have a protruding structure in a specific area, while the remaining parts exhibit a near-cylindrical regular shape, this structural feature is consistent with... Figure 1 The structure shown is similar. Based on this structural characteristic, in order to better adapt to the different radial size requirements of the motor winding ends and ensure the installation, fixation and operation stability of the ring structure in the motor, a ring structure composed of a first ring segment 11 and a second ring segment 12 was specially designed.

[0042] It should be emphasized that in the various optional embodiments described below, the ring structure is described as consisting of a first ring segment 11 and a second ring segment 12.

[0043] Optionally, the oil passage 3 extends from one end of the second ring segment 12 to the other end along the circumference of the annular structure, and a plurality of oil injection holes 2 are distributed at intervals from one end of the second ring segment 12 to the other end along the circumference of the annular structure.

[0044] In this optional embodiment, the oil passages 3 are arranged circumferentially along the second ring segment 12, starting from one end and extending continuously to the other. This design ensures that the entire circumferential range of the second ring segment 12 is covered by the oil passages 3, which facilitates smooth communication with the various oil injection holes 2 opened on the inner wall of the second ring segment 12. This results in a more stable flow of oil within the oil passages 3, ensuring uniform and efficient delivery of oil to each injection point, thereby meeting the cooling requirements of the winding ends.

[0045] Meanwhile, multiple oil injection holes 2 are also distributed at intervals along the circumference of the annular structure, from one end of the second ring segment 12 to the other. The number of oil injection holes 2 is set to multiple, and these holes 2 are also distributed at certain intervals along the circumference of the annular structure, from one end of the second ring segment 12 to the other, to improve the uniformity of oil spray cooling at the winding ends. In practical applications, to achieve the best cooling effect, these oil injection holes 2 can be arranged at uniform intervals.

[0046] Optionally, such as Figure 4 As shown, oil passage 3 is located inside the second ring segment 12.

[0047] The fuel injection ring is also commonly referred to as the oil guide groove in the industry, a name closely related to the structural features of its oil passage 3. In traditional designs, the outer wall of the fuel injection ring has an annular groove structure. When the fuel injection ring is installed inside the motor, the annular groove structure is sealed to the inner wall of the motor housing through a sealing element, thereby forming an oil passage 3 that is connected to the oil circuit inside the motor housing.

[0048] In this optional embodiment, the design of the oil passage 3 abandons the traditional structure and instead utilizes the sufficient radial thickness of the second ring segment 12 itself to directly set the oil passage 3 inside the second ring segment 12. The oil guiding function is realized through the channel structure inside the second ring segment 12, guiding the oil to flow to the injection hole 2, without the need to design a corresponding oil passage in the motor housing.

[0049] Optionally, the second ring segment 12 is a hollow structure, and the internal cavity forms an oil passage 3.

[0050] In this optional embodiment, the second ring segment 12 adopts a hollow structure design, and the oil passage 3 is constructed through the internal cavity. This design has many advantages such as simple structure and convenient manufacturing.

[0051] To further optimize the structural performance of the second ring segment 12, it can be designed as a hollow structure with a U-shaped cross-section, typically a flat U-shape. This cross-sectional design has the following advantages: Firstly, the flat U-shaped cross-section allows the second ring segment 12 to occupy less radial space while ensuring sufficient strength, which is beneficial for assembly and layout with other components; secondly, the rectangular cross-section of the internal cavity facilitates connection and sealing with the inlet and outlet structures of the oil passage 3, ensuring smooth flow of lubricating oil within the oil passage 3 and reducing the risk of leakage.

[0052] Optionally, such as Figure 3 and Figure 4 As shown, the second ring segment 12 includes a ring segment body 121 and a first cover plate 122. The ring segment body 121 has a first slot on one end face along the axial direction of the ring structure. The first cover plate 122 is provided at the opening of the first slot. The first cover plate 122 and the first slot form an oil passage 3.

[0053] In this optional embodiment, the cooling oil spray ring is manufactured using injection molding, a method widely used in the traditional oil spray ring industry. Specifically, the annular structure, as a key structural component of the cooling oil spray ring, is manufactured through injection molding. A split design is advantageous for facilitating the injection molding of the second annular segment 12 with an internal cavity structure. The annular segment 121 and the first cover plate 122 are two independent components, which can be subsequently assembled into a complete second annular segment 12 through welding or other connection methods.

[0054] In addition, the cross-section of the first cover plate 122 can be designed to be T-shaped, with the vertical part of the T-shape embedded in the first slot, which has a better sealing effect and is also more convenient to operate during welding connection.

[0055] Optionally, such as Figure 2-4 As shown, the second ring segment 12 has an oil inlet structure 4 on one end face in the axial direction, which is used to introduce oil into the oil passage 3.

[0056] In this optional embodiment, an oil inlet structure 4 is provided on one axial end face of the second ring segment 12. The oil inlet structure 4 functions to guide oil into the oil passage 3, allowing oil to enter the cooling oil spray ring shaft from the motor end cover 62 at one axial end of the cooling oil spray ring. Its design must fully consider the internal structure of the motor, and a specific channel shape and size design can be adopted, along with reasonable sealing measures, to ensure the reliability and stability of oil delivery. Specifically, the oil inlet structure 4 is located on the end face of the second ring segment 12 opposite to the first cover plate 122, that is, the oil inlet structure 4 and the first cover plate 122 are located at opposite ends of the ring segment body 121.

[0057] Optionally, the oil inlet structure 4 includes an oil inlet pipe 41 and a first support block 42, the first support block 42 being disposed in the second ring segment 12; the oil inlet pipe 41 being disposed in the first support block 42, and a chamber 421 being disposed in the first support block 42 and the corresponding second ring segment 12, the chamber 421 being used to connect the oil inlet pipe 41 and the oil passage 3.

[0058] In this optional embodiment, a first support block 42 is provided on the other end face of the second ring segment 12 in the axial direction. This first support block 42 effectively supports the oil inlet pipe 41, maintaining a certain axial distance between the oil inlet pipe 41 and the annular structure, avoiding interference between the winding end and the oil inlet pipe 41, thus ensuring a reasonable layout and normal operation of the motor's internal structure. Furthermore, the chamber 421 formed within the first support block 42 and its corresponding portion of the second ring segment 12 facilitates a smoother transition between the oil inlet pipe 41 and the oil passage 3 of the second ring segment 12.

[0059] Optionally, the second ring segment 12 and the first support block 42 are integral structures, and the outer wall surfaces of the first support block 42 and the corresponding second ring segment 12 are provided with a second slot. The slot opening is provided with a second cover plate 422, and the second cover plate 422 and the second slot form a cavity 421.

[0060] In this optional embodiment, the first support block 42 and the annular body 121 of the second ring segment 12 are integral structures. A second slot is formed on the outer wall of the first support block 42 and the outer wall of the connected annular body 121. A second cover plate 422 is installed at the opening of the second slot. The second cover plate 422 effectively closes the second slot, forming a chamber 421 within the slot cavity. As described above, the annular structure is typically manufactured using injection molding. The design of the second cover plate 422 facilitates the injection molding of the chamber 421 structure of the second annular segment 12. The second cover plate 422, as a component independent of the annular body 121 and the first support block 42, can be subsequently assembled at the opening of the second slot via welding or other connection methods.

[0061] Specifically, such as Figure 3As shown, an oil inlet structure 4 can be provided at one end of the second ring segment 12 along the circumferential direction. That is, an oil inlet is arranged at one end of the oil passage 3 along the circumferential direction. The oil enters the oil passage 3 from the oil inlet, and then flows from one end of the oil passage 3 to the other end, and is sprayed out from multiple oil injection holes 2 in the process.

[0062] Optionally, the first support block 42 is an arc-shaped plate and is aligned with the second ring segment 12 along the axial direction of the annular structure.

[0063] In this optional embodiment, this design can be understood as follows: a portion of the main body of the second ring segment 12 extends axially to form a first support block 42. The first support block 42 also extends circumferentially along the second ring segment 12 to form an arc-shaped plate structure. This design can prevent the first support block 42 from protruding relative to the outer wall of the second ring segment 12, optimize the structural layout, and facilitate injection molding.

[0064] Optionally, such as Figure 2 As shown, the oil inlet pipe 41 is L-shaped, including a first straight section arranged axially along the annular structure and a second straight section arranged radially along the annular structure. One end of the second straight section is connected to the first support block 42, and the other end extends toward the inner side of the annular structure and connects to one end of the first straight section. The other end of the first straight section extends axially away from the stator core along the annular structure until it is connected to the motor housing or extends to the outside of the motor housing.

[0065] In this optional embodiment, the oil inlet pipe 41 adopts an L-shaped structure design, which has significant advantages in terms of spatial layout and can efficiently adapt to the complex and compact space environment inside the motor. The internal components of the motor are arranged extremely compactly, and space resources are very limited. With its unique structural characteristics, the L-shaped oil inlet pipe 41 can flexibly avoid other components by rationally planning and adjusting the length and angle of the two straight sections, and successfully achieve effective connection with other components in the oil inlet structure 4 and the oil passage 3. This effectively avoids installation difficulties caused by limited space and the risk of interference with other components.

[0066] Specifically, the first and second straight sections of the oil inlet pipe 41 have a clearly defined arrangement. The first straight section is arranged axially, and its port extends to the outside of the motor housing to form an oil inlet, such as... Figure 5 and Figure 6 As shown, the end of the first straight section extends to the end cover 62 of the flat wire motor to connect with an external oil source; the second straight section is arranged radially, and the port of this straight section is directly connected to the chamber 421 inside the first support block 42, ensuring that the lubricating oil can flow smoothly from the first straight section, enter the chamber 421 through the second straight section, and then flow into the oil passage 3, providing reliable cooling and lubrication for the normal operation of the motor.

[0067] Furthermore, the L-shaped oil inlet pipe 41 allows the oil inlet to be positioned away from the side wall area of ​​the motor housing. This ingenious layout facilitates the proper placement of the oil inlet hole on the end cover 62, effectively optimizing the overall structure and space utilization.

[0068] Optionally, a rib is provided between the first support block 42 and the second ring segment 12; a rib is provided between the oil inlet pipe 41 and the first support block 42.

[0069] In this optional embodiment, to enhance structural strength and stability, ribs are provided between the first support block 42 and the second ring segment 12, and between the oil inlet pipe 41 and the first support block 42.

[0070] Specifically, such as Figure 3 As shown, there are two ribs between the first support block 42 and the second ring segment 12, arranged on both sides of the first support block 42. There are three ribs between the oil inlet pipe 41 and the first support block 42: one is arranged between the first straight section and the second straight section of the oil inlet pipe 41, and the other two are arranged between the first straight section and the first support block 42. This arrangement can effectively improve the load-bearing capacity and deformation resistance of the entire structure, ensuring the stability and reliability of the motor during operation.

[0071] Optionally, such as Figure 2 As shown, the second ring segment 12 is provided with an installation structure on one end face along the axial direction of the ring structure. The installation structure includes an assembly bracket 51 and / or a positioning bracket 52. The assembly bracket 51 is provided with an installation hole 511 for connecting with the motor housing. The positioning bracket 52 is provided with a positioning hole 521 for assembling and positioning with the motor housing.

[0072] Specifically, the mounting structure includes an assembly bracket 51 and a positioning bracket 52. The assembly bracket 51 has a mounting hole 511 for connecting and fixing to the motor housing, ensuring the mounting structure is securely installed on the motor housing. The positioning bracket 52 has a positioning hole 521 for assembling and positioning with the motor housing, ensuring the accurate installation position of the mounting structure on the motor housing. Specifically, the mounting structure is located on the end face of the second ring segment 12 opposite to the first cover plate 122; that is, the mounting structure and the first cover plate 122 are located at opposite ends of the ring segment 121.

[0073] In this optional embodiment, the mounting bracket 51 and the positioning bracket 52 cooperate to provide a reliable guarantee for the installation of the mounting structure on the motor housing. The connection through the mounting holes 511 allows the mounting structure and the motor housing to form a stable whole; while the positioning function of the positioning holes 521 ensures the installation accuracy of the mounting structure, avoiding various problems caused by installation position deviations, such as interference between components and operational instability, thereby improving the overall performance and reliability of the motor. Specifically, as shown... Figure 2 As shown, there are two assembly brackets 51 and one positioning bracket 52.

[0074] Optionally, the main body of the mounting bracket 51 is composed of a first plate and a second plate arranged in an L-shape. The surface of the first plate is perpendicular to the axis of the annular structure and is provided with mounting holes. The surface of the second plate is parallel to the axis of the annular structure and is connected to the second ring segment 12.

[0075] In this optional embodiment, the main structure of the mounting bracket 51 is jointly composed of a first plate and a second plate arranged in an L-shape. The surface of the first plate is perpendicular to the axial direction of the annular structure, and a mounting hole 511 is provided on the first plate. The surface of the second plate is parallel to the axis of the annular structure and is connected to the second ring segment 12. This L-shaped mounting bracket 51 cleverly avoids the winding end structure and allows the mounting hole 511 to be positioned away from the side wall area of ​​the motor housing, facilitating the fixing of the mounting hole 511 to the end cover 62 of the motor housing. Figure 5 As shown. Additionally, the mounting bracket 51 and the ring structure can be an integral structure, directly injection molded.

[0076] Similarly, the main body of the positioning bracket 52 can also be composed of two plates arranged in an L-shape, similar to the structure of the assembly bracket 51.

[0077] like Figure 5 As shown, the L-shaped plate of the mounting bracket 51 and the positioning bracket 52 extends to the inner wall of the end cover 62 and connects with the corresponding holes reserved on the inner wall of the end cover 62.

[0078] Optionally, the ring structure is made by injection molding and is an injection molded part.

[0079] Specifically, the first ring segment 11, the second ring segment 12, the oil inlet pipe 41, the first support block 42, the assembly bracket 51, and the positioning bracket 52 can be integrally injection molded structures. This integral injection molding method can ensure that the connection between the components is firm and the position is accurate, avoiding performance problems caused by assembly errors, while also simplifying the production process and improving production efficiency.

[0080] The reason why the first cover plate 122 and the second cover plate 422 are injection molded separately is mainly due to draft considerations in the injection molding process. When injection molding components with internal cavity structures, such as an annular structure with oil channels 3 and chambers 421, if the entire structure is molded as a single piece, it may lead to draft difficulties and make it difficult to form the internal cavity structure. Therefore, after the first cover plate 122 and the second cover plate 422 are injection molded separately, they are then firmly connected to the ring body by welding, which ensures both product quality and meets the requirements of the production process.

[0081] Optionally, such as Figure 2 As shown, the outer surfaces of the first ring segment 11 and the second ring segment 12 form a complete cylindrical surface.

[0082] In principle, there are no particular restrictions on the specific shapes of the inner and outer surfaces of the first ring segment 11 and the second ring segment 12, as long as they can be smoothly embedded into the inner wall space of the motor housing. However, from the perspective of optimizing the structure and improving performance, the outer surfaces of the first ring segment 11 and the second ring segment 12 should generally form a complete cylindrical surface to ensure the overall fit of the annular structure with the inner wall of the motor housing. At the same time, the inner wall surfaces of the first ring segment 11 and the second ring segment 12 are both designed as partially cylindrical surfaces, and it should be particularly noted that the diameter of the inner wall surface of the first ring segment 11 should be larger than the diameter of the inner wall surface of the second ring segment 12.

[0083] It should be noted that a complete cylindrical surface is a cylindrical surface with a central angle of 360°, and this cylindrical surface completes a full rotation around its axis in space without any missing parts. A partial cylindrical surface, on the other hand, refers to a cylindrical surface with a corresponding central angle of less than 360°, meaning that this cylindrical surface only rotates around its axis at a partial angle in space, and does not complete a full rotation.

[0084] Optionally, the radial cross-section of the first ring segment 11 is designed to be rectangular. This design allows it to have a thinner thickness in the radial direction, thereby ensuring that the ring segment can pass smoothly through the corresponding narrow space or specific structural restriction area inside the motor housing, and meet the process requirements for installation and assembly.

[0085] This utility model embodiment also provides a motor, including the aforementioned cooling oil injection ring. The technical improvements and technical effects of the motor are the same as those of the cooling oil injection ring.

[0086] This utility model provides a vehicle including the aforementioned motor. The technical improvements and effects of the vehicle are the same as those of the cooling oil injection ring.

[0087] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A cooling oil spray ring characterized by, It includes a first ring segment (11) and a second ring segment (12). The first ring segment (11) and the second ring segment (12) are connected end to end to form a ring structure. The inner diameter of the first ring segment (11) is larger than the inner diameter of the second ring segment (12). The second ring segment (12) is provided with an oil passage (3). The inner sidewall of the second ring segment (12) is provided with an oil injection hole (2) that communicates with the oil passage (3).

2. The cooling oil jet ring of claim 1, wherein The oil passage (3) extends from one end of the second ring segment (12) to the other end along the circumference of the annular structure, and the plurality of oil injection holes (2) are distributed at intervals from one end of the second ring segment (12) to the other end along the circumference of the annular structure.

3. The cooling oil jet ring of claim 1, wherein The oil passage (3) is located inside the second ring segment (12).

4. The cooling oil jet ring of claim 3, wherein The second ring segment (12) includes a ring segment body (121) and a first cover plate (122). The ring segment body (121) has a first slot on one end face along the axial direction of the ring structure. The first cover plate (122) is provided at the opening of the first slot. The first cover plate (122) and the first slot form the oil passage (3).

5. The cooling oil jet ring of claim 1 wherein, The second ring segment (12) is provided with an oil inlet structure (4) on one end face along the axial direction of the ring structure. The oil inlet structure (4) is used to introduce oil into the oil passage (3).

6. The cooling oil jet ring of claim 5, wherein The oil inlet structure (4) includes an oil inlet pipe (41) and a first support block (42), the first support block (42) being disposed in the second ring segment (12); the oil inlet pipe (41) being disposed in the first support block (42), and a chamber (421) being disposed in the first support block (42) and the corresponding second ring segment (12), the chamber (421) being connected to the oil inlet pipe (41) and the oil passage (3).

7. The cooling oil jet ring of claim 6, wherein The second ring segment (12) and the first support block (42) are integral structures, and the outer wall surfaces of the first support block (42) and the corresponding second ring segment (12) are provided with a second slot. The slot opening of the second slot is provided with a second cover plate (422), and the second cover plate (422) and the second slot form the cavity (421).

8. The cooling oil jet ring of claim 1 wherein, The second ring segment (12) has an installation structure on one end face along the axial direction of the ring structure. The installation structure includes an assembly bracket (51) and / or a positioning bracket (52). The assembly bracket (51) has an installation hole (511) for connecting with the motor housing. The positioning bracket (52) has a positioning hole (521) for assembling and positioning with the motor housing.

9. An electric machine characterized by Includes the cooling oil injection ring as described in any one of claims 1-8.

10. A vehicle characterized by comprising: Includes the motor as described in claim 9.

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