Oil slinger assembly, electric machine and vehicle

Abstract

The application provides a oil throwing assembly, a motor and a vehicle, and belongs to the technical field of motor cooling structure. The oil throwing assembly comprises a rotating shaft, an iron core and a first oil throwing ring. The rotating shaft is internally provided with a center hole. The rotating shaft is provided with a first flow guide hole in communication with the center hole, and the first flow guide hole is provided in a penetrating manner. The iron core is in abutment with the outer peripheral wall of the rotating shaft. One end of the iron core is provided with a first end ring, the first end ring is annularly arranged on the rotating shaft, and a first annular cavity is left between the first end ring and the rotating shaft. The first oil throwing ring is annularly arranged on the rotating shaft. One end of the first oil throwing ring is in abutment on the end face of the first end ring away from the iron core, the other end of the first oil throwing ring extends into the first annular cavity, and the first oil throwing ring is rotationally connected with the rotating shaft. The first oil throwing ring is provided with a first channel. One end of the first channel is in communication with the first flow guide hole, and the other end of the first channel is in communication with the side of the first oil throwing ring away from the first end ring. The oil throwing assembly, the motor and the vehicle provided by the application can improve the supporting strength of the oil throwing assembly, and avoid the problem that the running of the motor is affected due to the tearing and failure of the end ring.

Description

Technical Field

[0001] This application belongs to the field of motor cooling structure technology, and more specifically, relates to an oil slinger assembly, a motor, and a vehicle. Background Technology

[0002] Electric motors are widely used in four-wheel drive pure electric vehicles. Most electric motors use cast aluminum rotors, and the aluminum material is close to pure aluminum. Their cooling methods include oil slinging or oil stirring. Oil slinging cooling usually refers to the cooling method through oil slinging components. Specifically, the cooling oil is led out from the inner cavity of the rotating shaft to the oil slinging ring and then discharged through the oil slinging ring so that the heat is discharged with the cooling oil.

[0003] In the prior art, the oil slinger assembly of the motor usually includes a shaft and an iron core located outside the shaft. End rings are provided at both ends of the iron core, and the oil slinger rings are also encircled on the shaft. When the shaft drives the iron core and end rings to operate at high speed and high centrifugal force, the heat generated at the end rings at the rear end is large, and there is a risk of tearing or strength failure of the end rings. Utility Model Content

[0004] The purpose of this application is to provide an oil slinger assembly, a motor, and a vehicle, which aims to solve the technical problem that the rear end ring of the existing motor oil slinger assembly has insufficient strength and is prone to tearing or even failure under high-speed centrifugal force.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: Firstly, an oil-slinging component is provided, comprising: The rotating shaft has a central hole inside for the flow of cooling oil; the rotating shaft also has a first guide hole communicating with the central hole, and the first guide hole is arranged radially through the rotating shaft. An iron core is annularly mounted on the rotating shaft and abuts against the outer peripheral wall of the rotating shaft; one end of the iron core is provided with a first end ring, which is annularly mounted on the rotating shaft and has a first annular cavity between itself and the rotating shaft; and A first oil slinger ring is mounted on the rotating shaft; one end of the first oil slinger ring is placed inside the first annular cavity and screwed to the rotating shaft; the first oil slinger ring is provided with a first channel, one end of the first channel is connected to the first guide hole, and the other end is used to guide to the side of the first oil slinger ring away from the first end ring; The other end of the first oil-slinging ring extends out of the first annular cavity and abuts against the end face of the first end ring that is away from the iron core.

[0006] Compared with the prior art, the oil slinger assembly provided in this application fixes the first oil slinger ring by screwing it onto the rotating shaft; and by setting a first channel and a first annular cavity, the first channel guides the cooling oil in the central hole to the side of the first oil slinger ring away from the first end ring through the first guide hole, thus realizing the oil slingering process; furthermore, by abutting one end of the first oil slinger ring against the end face of the first end ring away from the iron core, a limiting position is formed at the end of the first end ring along the axial direction of the rotating shaft, thereby increasing the support strength of the first end ring and ensuring that the first oil slinger ring will not easily loosen or fall off when the motor is running at high speed, reducing the risk of tearing and failure of the first end ring, and improving the overall reliability and stability of the oil slinger assembly.

[0007] In this application, by reasonably setting the structure of the first oil-throwing ring, the axial limit of the first end ring can be increased while ensuring the smooth flow of the oil-throwing path, thereby improving the support strength of the first end ring and helping to ensure the stability and safety of the oil-throwing assembly.

[0008] In one possible implementation, the first oil-slinging ring includes: The limiting part abuts against the end face of the first end ring away from the iron core, and the inner edge of the limiting part extends toward the rotating shaft; A conductive part is placed inside the first annular cavity and screwed onto the rotating shaft; the conductive part is connected to the limiting part; The guide portion is provided with an inlet channel, the two ends of which are connected to the first annular cavity and the first guide hole respectively; the limiting portion is provided with an outlet channel, one end of which is connected to the first annular cavity and the other end of which extends to the side of the limiting portion away from the first end ring; the inlet channel and the outlet channel form the first channel; the cooling oil flows sequentially through the central hole, the first guide hole, the inlet channel, and the first annular cavity, and is discharged through the outlet channel.

[0009] By specifically configuring the first oil-slinging ring with a limiting part and a conducting part, the limiting part can limit the first end ring, and the conducting part can discharge the cooling oil in the first guide hole.

[0010] In some embodiments, multiple first guide holes are provided, and the multiple first guide holes are spaced apart circumferentially along the rotating shaft; The conductive part has an outwardly recessed annular groove on the side facing the rotating shaft, and the annular groove communicates with a plurality of the first guide holes; The conductive part is also provided with a plurality of first connecting holes, which are spaced apart circumferentially along the rotating shaft; one end of the first connecting hole communicates with the annular groove and the other end communicates with the first annular cavity. The annular groove and the plurality of first connecting holes constitute the inlet channel.

[0011] By setting the annular groove, the cooling oil in the multiple first guide holes can enter the annular cavity formed by the annular groove and the outer peripheral wall of the shaft, so that the cooling oil in the annular groove can be discharged into the first annular cavity through the first connecting hole.

[0012] For example, in the circumferential direction of the rotating shaft, the first guide hole and the first connecting hole are misaligned.

[0013] The staggered arrangement of the first guide hole and the first connecting hole can increase the flow path of the cooling oil in the annular groove, expand the cooling range, and make the cooling oil evenly distributed in the annular groove, which is beneficial to the stable operation of the oil slinger assembly.

[0014] In some embodiments, the first oil-slinging ring further includes: A connecting portion is disposed within the first annular cavity and positioned between the conducting portion and the limiting portion; the conducting portion is connected to the limiting portion via the connecting portion. The connecting part is provided with multiple sets of reinforcing ribs, and the two ends of the reinforcing ribs extend to the limiting part and the guiding part respectively; the multiple sets of reinforcing ribs are arranged at intervals along the circumference of the rotating shaft.

[0015] By adding reinforcing ribs, the connection strength of the connecting part on the first oil slinger ring is increased.

[0016] In one possible implementation, the first oil-slinging ring is provided with a plurality of elastic claws, which are spaced apart circumferentially along the rotating shaft; the elastic claws are used to clamp into the first end ring.

[0017] By setting elastic claws, the connection strength between the first oil slinger ring and the first end ring is further enhanced, which is beneficial to improving the support and connection strength of the first oil slinger ring to the first end ring.

[0018] In one possible implementation, the oil-slinging component further includes: The second end ring is located at the other end of the iron core; the second end ring is encircled on the rotating shaft, and a second annular cavity is left between the second end ring and the rotating shaft; The second oil-slinging ring is placed inside the second annular cavity; the second oil-slinging ring is arranged around the rotating shaft and abuts against the outer peripheral wall of the rotating shaft; The rotating shaft is provided with a second guide hole that communicates with the central hole, and the second guide hole is arranged radially through the rotating shaft; the second oil slinger ring is provided with a second channel, one end of the second channel is connected to the second guide hole, and the other end is connected to the side of the second oil slinger ring away from the second end ring.

[0019] By setting a second end ring and a second oil-slinging ring, an oil-slinging structure is formed at the front end of the oil-slinging assembly. The cooling oil in the central hole can enter the second channel of the second oil-slinging ring through the second guide hole, and be discharged to the side of the second oil-slinging ring away from the second end ring through the second channel.

[0020] In some embodiments, the iron core is provided with a connecting channel extending axially along the rotating shaft, and the second channel communicates with the first annular cavity through the connecting channel.

[0021] The connecting channel is located inside the iron core and can connect the first channel and the first annular cavity to realize the conduction of cooling oil between the front and rear ends of the shaft. The connecting channel is used to cool the iron core, i.e., the shaft, thereby improving the cooling effect.

[0022] Secondly, embodiments of this application also provide a motor, including the aforementioned oil-slinging component.

[0023] The motor provided in this application embodiment includes the above-mentioned oil slinger assembly, and therefore has all the beneficial effects of the above-mentioned oil slinger assembly. It can effectively increase the support strength of the oil slinger assembly, avoid the problem of affecting the normal operation of the motor due to the failure of the oil slinger assembly, and help improve the smoothness and safety of the motor operation.

[0024] Thirdly, embodiments of this application also provide a vehicle that includes the aforementioned motor.

[0025] The vehicle provided in this application embodiment includes the aforementioned motor, and therefore has all the beneficial effects of the aforementioned motor. It can avoid the problem of the motor's normal operation being affected by the failure of the oil slinger component. Therefore, by ensuring the smooth and safe operation of the motor, the safety and stability of the vehicle's driving can be effectively improved. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the oil-slinging component provided in the embodiments of this application; Figure 2 A cross-sectional structural diagram of the oil-slinging assembly provided in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the first oil-slinging ring provided in an embodiment of this application; Figure 4An enlarged cross-sectional view of the oil-throwing assembly at the first oil-throwing ring provided in the embodiments of this application; Figure 5 This is an enlarged schematic diagram of the cross-sectional structure of the oil-slinging assembly at the second oil-slinging ring provided in the embodiments of this application.

[0028] In the diagram: 1. Shaft; 11. Center hole; 12. First guide hole; 13. Second guide hole; 14. Shoulder; 15. Third guide hole; 16. Fourth guide hole; 2. Iron core; 21. Connecting channel; 3. First end ring; 31. First annular cavity; 4. Second end ring; 41. Second annular cavity; 5. First oil slinger ring; 51. Limiting part; 511. Outflow channel; 52. Connecting part; 53. Conducting part; 531. Inflow channel; 5311. Annular groove; 5312. First connecting hole; 54. Reinforcing rib; 55. Elastic claw; 6. Second oil slinger ring; 61. Second connecting hole; 62. Third connecting hole; 63. Fourth connecting hole; 7. First bearing; 8. Second bearing. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] It should be noted that in traditional technologies, cooling methods using cooling oil include oil cooling and water cooling. The cooling oil used in this application is oil cooling. While cooling the oil slinger assembly, the oil can also lubricate the bearing to ensure its normal operation.

[0033] In addition, it should be noted that a guide bar is also provided on the iron core 2. The guide bar is formed by centrifugal casting after the rotor iron core is placed into the casting mold. The guide bar is used to connect with the end ring. Specifically, the guide bar and the end ring are integrally cast and connected. The structure and connection method of the guide bar are existing technologies. The structural design of the guide bar is not the focus of this application and will not be described in detail in this application.

[0034] It is important to understand that when the oil-slinging assembly is running at high speed, the end ring generates a lot of heat and its centrifugal force is also very large. Therefore, under the action of centrifugal force and high heat, the end ring is prone to tearing or strength failure.

[0035] Please refer to the following: Figures 1 to 5 The oil-throwing assembly, motor, and vehicle provided in this application will now be described. The oil slinger assembly includes a rotating shaft 1, an iron core 2, and a first oil slinger ring 5. The rotating shaft 1 has a central hole 11 for the flow of cooling oil. The rotating shaft 1 also has a first guide hole 12 communicating with the central hole 11, and the first guide hole 12 is arranged radially through the rotating shaft 1. The iron core 2 is ringed on the rotating shaft 1 and abuts against the outer peripheral wall of the rotating shaft 1. One end of the iron core 2 is provided with a first end ring 3, which is ringed on the rotating shaft 1 and leaves a first annular cavity 31 between it and the rotating shaft 1. The first oil slinger ring 5 is ringed on the rotating shaft 1. One end of the first oil slinger ring 5 is placed in the first annular cavity 31 and screwed to the rotating shaft 1. The first oil slinger ring 5 has a first channel, one end of which communicates with the first guide hole 12, and the other end is used to guide to the side of the first oil slinger ring 5 away from the first end ring 3. The other end of the first oil slinger ring 5 extends out of the first annular cavity 31 and abuts against the end face of the first end ring 3 away from the iron core 2.

[0036] It should be understood that the cooling oil enters the first guide hole 12 from the central hole 11 and enters the first channel along the through direction of the first guide hole 12. The oil in the first channel is used to cool the first end ring 3 through the first oil slinger ring 5 and is discharged to the side of the first oil slinger ring 5 away from the first end ring 3.

[0037] One end of the first oil-slinging ring 5 is screwed onto the rotating shaft 1, which facilitates the setting of the first channel so that the first channel is connected to the first guide hole 12 that passes through the rotating shaft 1, thereby realizing the guiding process of the cooling oil.

[0038] Additionally, it should be noted that a first bearing 7 is also fitted onto the rotating shaft 1. The inner circumferential surface of the first bearing 7 abuts against the outer circumferential wall of the rotating shaft 1 and rotates at high speed with the rotating shaft 1. A third guide hole 15 is also provided on the rotating shaft 1. One end of the third guide hole 15 is connected to the central hole 11, and the other end also extends to the outer circumferential wall of the rotating shaft 1. The direction of the third guide hole 15 is inclined towards the first bearing 7 so that the cooling oil enters the first bearing 7 through the third guide hole 15 to cool the first bearing 7.

[0039] It should be understood that in this application, the first oil slinger ring 5 is screwed onto the rotating shaft 1, meaning that the inner circumferential wall of the first oil slinger ring 5 is connected to the outer circumferential wall of the rotating shaft 1 through a threaded structure.

[0040] Compared with the prior art, the oil-throwing assembly provided in this application fixes the first oil-throwing ring 5 by screwing it onto the rotating shaft 1; and by setting a first channel and a first annular cavity 31, the first channel guides the cooling oil in the central hole 11 to the side of the first oil-throwing ring 5 away from the first end ring 3 through the first guide hole 12, thus realizing the oil-throwing process; furthermore, by abutting one end of the first oil-throwing ring 5 against the end face of the first end ring 3 away from the iron core 2, a limiting force is formed at the end of the first end ring 3 along the axial direction of the rotating shaft 1, thereby increasing the support strength of the first end ring 3 and ensuring that the first oil-throwing ring 5 will not easily loosen or fall off when the motor is running at high speed, reducing the risk of tearing and failure of the first end ring 3, and improving the overall reliability and stability of the oil-throwing assembly. In this application, by reasonably setting the structure of the first oil-throwing ring 5, while ensuring the smooth flow of the oil-throwing path, the axial limiting force on the first end ring 3 can be increased, thereby improving the support strength of the first end ring 3 and contributing to the stability and safety of the oil-throwing assembly operation.

[0041] Please see Figure 3 In some possible embodiments, the first oil-slinging ring 5 includes a limiting part 51, a connecting part 52, and a conducting part 53; the limiting part 51 abuts against the end face of the first end ring 3 away from the iron core 2, and the inner edge of the limiting part 51 extends toward the rotating shaft 1; the conducting part 53 is placed in the first annular cavity 31 and screwed onto the rotating shaft 1; the conducting part 53 is connected to the limiting part 51; wherein, the conducting part 53 is provided with an inlet channel 531, and the two ends of the inlet channel 531 are respectively connected to the first annular cavity 31 and the first guide hole 12; the limiting part 51 is provided with an outlet channel 511, one end of the outlet channel 511 is connected to the first annular cavity 31, and the other end extends to the side of the limiting part 51 away from the first end ring 3; the inlet channel 531 and the outlet channel 511 form a first channel; the cooling oil flows sequentially through the central hole 11, the first guide hole 12, the inlet channel 531, and the first annular cavity 31, and is discharged through the outlet channel 511.

[0042] By specifically configuring the first oil-slinging ring 5 with a limiting part 51 and a conducting part 53, the limiting part 51 can limit the first end ring 3, and the conducting part 53 can facilitate the export of cooling oil from the first guide hole 12.

[0043] Specifically, the inner edge of the first oil-slinging ring 5 extends toward the rotating shaft 1 to facilitate increasing the tightness of the connection between the conducting part 53 and the limiting part 51.

[0044] It should be understood that the first oil-slinging ring 5 in this application is divided into two parts in terms of conducting cooling oil. First, the first channel of the conducting part 53 ensures that the cooling oil can smoothly enter the first annular cavity 31 so as to cool the first end ring 3 in the first annular cavity 31. The cooling oil fills the first annular cavity 31, which can cool the inner peripheral wall of the first end ring 3. Second, after the cooling oil is discharged to the outside of the first end ring 3 through the outflow channel 511, it can cool the outer peripheral wall of the first end ring 3 again.

[0045] Furthermore, the outflow channel 511 allows cooling oil carrying some heat to be discharged, thus removing the heat so that new cooling oil can re-enter the first annular cavity 31. It should be understood that although the cooling oil carries some heat after cooling the inner circumferential wall of the first end ring 3, its temperature still differs from that of the outer end wall of the first end ring 3. Therefore, the outer end wall of the first end ring 3 can be cooled after being discharged through the outflow channel 511.

[0046] It should be noted that the first oil-slinging ring 5 extends into the first annular cavity 31 to form an annular cavity between the first oil-slinging ring 5, the inner peripheral wall of the end ring, the outer peripheral wall of the rotating shaft 1, and the end face of the iron core 2. At this time, the first annular cavity is divided into the space occupied by the first oil-slinging ring 5 and the aforementioned annular cavity. Therefore, specifically, the cooling oil entering the first annular cavity 31 referred to in this application refers to the cooling oil entering the aforementioned annular cavity. Since the annular cavity is part of the first annular cavity 31, it can be reasonably understood that the cooling oil enters the first annular cavity 31.

[0047] Please see Figure 4 In some embodiments, multiple first guide holes 12 are provided, and the multiple first guide holes 12 are spaced apart circumferentially along the rotating shaft 1; the connecting part 53 has an annular groove 5311 recessed outward on the side facing the rotating shaft 1, and the annular groove 5311 communicates with the multiple first guide holes 12; the connecting part 53 is also provided with multiple first connecting holes 5312, and the multiple first connecting holes 5312 are spaced apart circumferentially along the rotating shaft 1; one end of the first connecting hole 5312 communicates with the annular groove 5311, and the other end communicates with the first annular cavity 31; wherein, the annular groove 5311 and the multiple first connecting holes 5312 form an inlet channel 531.

[0048] By setting the annular groove 5311, the cooling oil in the multiple first guide holes 12 can enter the annular cavity formed by the annular groove 5311 and the outer peripheral wall of the rotating shaft 1, so that the cooling oil in the annular groove 5311 can be discharged into the first annular cavity 31 through the first connecting hole 5312.

[0049] It should be understood that the multiple first guide holes 12 are spaced apart along the circumference of the rotating shaft 1, which increases the flow path of the cooling oil from the central hole 11 to the annular groove 5311, and improves the flow rate and distribution uniformity of the cooling oil entering the first annular cavity 31, so that the cooling oil can enter the first oil slinger ring 5 more comprehensively to participate in cooling and improve the cooling effect.

[0050] In addition, the annular groove 5311 and multiple first connecting holes 5312 form an inlet channel 531, which can further optimize the flow path of the cooling oil, allowing the cooling oil to enter the first annular cavity 31 more smoothly and efficiently, reducing flow resistance and improving cooling efficiency.

[0051] Specifically, an external thread is provided on the outer peripheral wall of the rotating shaft 1, and two sets of internal threads are provided on the inner peripheral wall of the conductive part 53. The two sets of internal threads are spaced apart along the circumference of the rotating shaft 1, and the annular groove 5311 is provided between the two sets of internal threads. During installation, the two sets of internal threads of the conductive part 53 are screwed onto the external threads of the rotating shaft 1.

[0052] Please see Figure 4 For example, in the circumferential direction of the rotating shaft 1, the first guide hole 12 and the first connecting hole 5312 are misaligned.

[0053] The staggered arrangement of the first guide hole 12 and the first connecting hole 5312 can increase the flow path of the cooling oil in the annular groove 5311, expand the cooling range, and make the cooling oil evenly distributed in the annular groove 5311, which is beneficial to the stable operation of the oil slinger assembly.

[0054] It should be understood that the first guide hole 12 and the first connecting hole 5312 are staggered in the circumferential direction of the rotating shaft. This avoids problems such as short circuit or excessive local pressure in the cooling oil during the flow process, reduces local pressure concentration, ensures the stability and uniformity of the cooling oil flow, and helps to improve the overall cooling effect and the working reliability of the first oil slinger ring 5.

[0055] It should be understood that the specific positions of the first guide hole 12 and the first connecting hole 5312 can be selectively set according to actual needs. Optionally, as another way of setting the first guide hole 12 and the first connecting hole 5312, the first guide hole 12 and the first connecting hole 5312 are set one-to-one in the circumferential direction of the rotating shaft 1; in this way, the flow of cooling oil can be facilitated.

[0056] Please see Figure 3 In some embodiments, the first oil-slinging ring 5 further includes a connecting portion 52; the connecting portion 52 is disposed in the first annular cavity 31 and positioned between the conducting portion 53 and the limiting portion 51; the conducting portion 53 is connected to the limiting portion 51 through the connecting portion 52; wherein, the connecting portion 52 is provided with multiple sets of reinforcing ribs 54, the two ends of the reinforcing ribs 54 extending to the limiting portion 51 and the conducting portion 53 respectively; the multiple sets of reinforcing ribs 54 are arranged at intervals along the circumference of the rotating shaft 1.

[0057] The connecting part 52 connects the guiding part 53 and the limiting part 51 into an integral structure to increase the connection strength of the first oil guide ring. The connection part 52 provides stable connection support for the entire structure containing the first oil slinger ring 5, preventing the first oil slinger ring 5 from deforming due to centrifugal force when rotating at high speed.

[0058] By setting reinforcing ribs 54, the connection strength of the connecting part 52 on the first oil slinger ring 5 is increased. The presence of reinforcing ribs 54 greatly enhances the structural strength and stability of the oil slinger ring.

[0059] Specifically, when the motor is running at high speed, the centrifugal force will exert a large force on the first oil slinger ring 5. The reinforcing rib 54 can effectively resist this force, prevent the first oil slinger ring 5 from deforming or being damaged, and ensure the normal operation of the first oil slinger ring 5. This ensures the stable realization of the cooling oil flow and the oil slinger cooling function, and improves the reliability and durability of the oil slinger assembly.

[0060] Please see Figure 1 or Figure 3 In some possible embodiments, the first oil-slinging ring 5 is provided with a plurality of elastic claws 55, which are spaced apart circumferentially along the rotating shaft 1; the elastic claws 55 are used to clamp into the first end ring 3.

[0061] By setting the elastic claw 55, the connection strength between the first oil slinger ring 5 and the first end ring 3 is further enhanced, which is beneficial to improving the support and connection strength of the first oil slinger ring 5 to the first end ring 3.

[0062] The design of the elastic claw 55 further enhances the tightness of the connection between the first oil slinger ring 5 and the first end ring 3, preventing relative displacement between the first end ring 3 and the first oil slinger ring 5 during high-speed rotation, which is beneficial to the effective cooling and stable operation of the motor rotor.

[0063] Specifically, the elastic claw 55 is an elastic clamping plate structure that can press the elastic clamping plate tightly onto the end ring after the first oil slinger ring 5 abuts against the end ring. Specifically, after the oil slinger ring is installed in place, a force is applied to it, causing the elastic claw 55 to deform and wedge into the corresponding groove on the end face of the first end ring 3, thus preventing the first oil slinger ring 5 from loosening. Furthermore, this increases the connection strength between the first oil slinger ring 5 and the first end ring 3, thereby reducing the risk of tearing and failure of the first end ring 3.

[0064] For example, the elastic claw 55 can also be a protruding locking block structure that can be engaged in the groove on the end face of the first end ring 3.

[0065] It should be understood that the iron core 2 on the rotating shaft 1 is usually equipped with two end rings, and each end ring needs to be equipped with an oil-throwing structure to achieve oil-throwing cooling.

[0066] As a specific embodiment of the above-mentioned oil-throwing component, both end rings can be set as the first end ring 3, and a set of first oil-throwing rings 5 ​​can be set at each first end ring 3. Furthermore, a set of first guide holes 12 can be corresponding to each first oil-throwing ring 5, and a guide path consisting of a first guide hole 12, an annular groove 5311, a first connecting hole 5312, a first annular cavity 31, and an outlet channel 511 can be formed at each first oil-throwing ring 5.

[0067] Furthermore, a channel connecting the two first annular cavities 31 is provided between the two ends of the first annular cavity 31 so that the cooling oil can be circulated back and forth in the axial direction of the rotating shaft 1.

[0068] At this point, two identical oil-slinging structures are formed at both ends of the iron core 2.

[0069] Please see Figure 2 and Figure 5 As another specific embodiment of the above-mentioned oil-throwing component, there are two different oil-throwing structures at both ends of the iron core 2. At one end of the iron core 2, the first end ring 3 and the first oil-throwing ring 5 are provided at one end of the rotating shaft 1, and a first annular cavity 31 is formed at the first end ring 3. A flow path consisting of a first flow hole 12, an annular groove 5311, a first connecting hole 5312, a first annular cavity 31, and an outlet channel 511 is formed between the first oil-throwing ring 5 and the first annular cavity 31 and the first flow guide hole 12.

[0070] Meanwhile, at the other end of the iron core 2, the oil slinger assembly also includes a second end ring 4 and a second oil slinger ring 6; the second end ring 4 is located at the other end of the iron core 2; the second end ring 4 is encircled on the rotating shaft 1, and a second annular cavity 41 is left between the second end ring 4 and the rotating shaft 1; the second oil slinger ring 6 is placed in the second annular cavity 41; the second oil slinger ring 6 is encircled on the rotating shaft 1 and abuts against the outer peripheral wall of the rotating shaft 1; wherein, the rotating shaft 1 is provided with a second guide hole 13 communicating with the central hole 11, and the second guide hole 13 is arranged radially through the rotating shaft 1; the second oil slinger ring 6 is provided with a second channel, one end of the second channel is connected to the second guide hole 13, and the other end is connected to the side of the second oil slinger ring 6 away from the second end ring 4.

[0071] The cooling oil in the central hole 11 enters the second channel through the second guide hole 13 and is discharged to the side of the second oil slinger ring 6 away from the second end ring 4 through the second channel, so as to realize the oil slinger path at the second oil slinger ring 6. It should be understood that the second oil slinger ring 6 is placed in the second annular cavity 41. Therefore, the cooling oil can be discharged through the second oil slinger ring 6 and allowed to enter the second annular cavity 41 to cool the second end ring 4.

[0072] By setting a second end ring 4 and a second oil-throwing ring 6, an oil-throwing structure is formed at the front end of the oil-throwing assembly, realizing the oil-throwing cooling function at the other end of the iron core 2. This allows the cooling oil to play a heat dissipation role at both ends of the oil-throwing assembly, further optimizing the cooling structure of the motor rotor and improving the operating stability and reliability of the motor.

[0073] The second connecting hole 61 is used to guide the cooling oil discharged from the second guide hole 13 to the third connecting hole 62 or the fourth connecting hole 63, and guide it to the outside of the second annular cavity 41 through the third connecting hole 62 to cool the outer end face of the second end ring 4 and the second bearing 8, or guide it to the second annular cavity 41 through the fourth connecting hole 63 to cool the inner circumferential surface of the second end ring 4.

[0074] Specifically, the second channel includes a second connecting hole 61, a third connecting hole 62, and a fourth connecting hole 63. Multiple second connecting holes 61 are provided, spaced apart circumferentially around the rotating shaft 1, and extending radially along the rotating shaft 1, with one end communicating with the second guide hole 13 on the rotating shaft 1. Multiple third connecting holes 62 are also provided, spaced apart circumferentially around the rotating shaft 1, with one end correspondingly communicating with the second connecting hole 61, and the other end extending axially along the rotating shaft 1 and extending to the outside of the second annular cavity 41. Multiple fourth connecting holes 63 are also provided, spaced apart circumferentially around the rotating shaft 1, with at least one third connecting hole 62 between every two adjacent fourth connecting holes 63. One end of the fourth connecting hole 63 correspondingly communicates with the second connecting hole 61, and the other end extends to the outside of the second oil slinger ring 6, facing into the second annular cavity 41.

[0075] It should be understood that the number of second connecting holes 61 is equal to the sum of the number of third connecting holes 62 and fourth connecting holes 63. Therefore, each second connecting hole 61 corresponds to either a third connecting hole 62 or a fourth connecting hole 63.

[0076] Additionally, it should be noted that a second bearing 8 is also fitted on the rotating shaft 1. The inner circumferential surface of the second bearing 8 abuts against the outer circumferential wall of the rotating shaft 1 and rotates at high speed with the rotating shaft 1. A fourth guide hole 16 is also provided on the rotating shaft 1. One end of the fourth guide hole 16 is connected to the central hole 11, and the other end also extends to the outer circumferential wall of the rotating shaft 1. The direction of the fourth guide hole 16 is inclined towards the second bearing 8 so that the cooling oil enters the second bearing 8 through the fourth guide hole 16 to cool the second bearing 8.

[0077] For example, the second oil slinger ring 6 is disposed in the second annular cavity 41, and a shoulder 14 for limiting the second oil slinger ring 6 is provided on the rotating shaft 1, wherein the second oil slinger ring 6 is limited between the shoulder 14 and the end face of the iron core 2.

[0078] Furthermore, the inner edge of the second oil slinger ring 6 is limited between the shoulder 14 and the end face of the iron core 2, and the outer edge extends outward past the shoulder 14. A plurality of protrusions are provided circumferentially at intervals along the axial direction of the rotating shaft 1 in the second oil slinger ring 6, and the protrusions are used to provide the aforementioned third connecting hole 62.

[0079] Please see Figure 2 In some embodiments, the core 2 is provided with a connecting channel 21 extending axially along the shaft 1, and the second channel is connected to the first annular cavity 31 through the connecting channel 21.

[0080] The connecting channel 21 is located inside the iron core 2 and can connect the first channel and the first annular cavity 31 to realize the conduction of cooling oil between the front and rear ends of the rotating shaft 1. The connecting channel 21 is used to cool the iron core 2, i.e. the rotating shaft 1, thereby improving the cooling effect.

[0081] Specifically, the connection channel 21 enables the cooling oil to be connected between the oil-throwing cooling areas at both ends of the motor oil-throwing assembly. On the one hand, this ensures a more uniform distribution of cooling oil throughout the entire oil-throwing assembly, improving the consistency of the cooling effect. On the other hand, when a local problem occurs in the oil-throwing cooling system at one end, the cooling oil at the other end can be replenished and adjusted to a certain extent through the connection channel 21, enhancing the fault tolerance and stability of the entire cooling system. This helps maintain the normal operation of the motor rotor under different operating conditions, ensuring the performance and lifespan of the motor.

[0082] Based on the same inventive concept, this application also provides a motor, including the above-mentioned oil-slinging component.

[0083] Optionally, the first end ring 3 and the first oil-slinging ring 5 are located at the rear end of the rotating shaft 1, and the second end ring 4 and the first oil-slinging ring 5 are located at the front end of the rotating shaft 1; it should be noted that the front and rear ends of the oil-slinging assembly referred to in this application are relative to the attached... Figure 2 In the direction indicated by the middle arrow A. The rear end of the rotor is close to the bottom of the central hole 11.

[0084] The motor provided in this application embodiment includes the above-mentioned oil slinger assembly, and therefore has all the beneficial effects of the above-mentioned oil slinger assembly. It can effectively increase the support strength of the oil slinger assembly, avoid the problem of affecting the normal operation of the motor due to the failure of the oil slinger assembly, and help improve the smoothness and safety of the motor operation.

[0085] Specifically, because the motor is equipped with the aforementioned oil slinger assembly, in the first aspect, the overall heat dissipation performance of the motor can be significantly improved through the first oil slinger ring 5 and the second oil slinger ring 6, which can effectively remove the heat generated during motor operation, reduce motor temperature, and reduce problems such as motor performance degradation and shortened lifespan caused by overheating. In the second aspect, the reasonable structural design of the first oil slinger ring 5 and the first end ring 3 in the oil slinger assembly ensures the stability and reliability of the motor during high-speed operation, improves the overall performance and efficiency of the motor, and enables the motor to work more efficiently and stably, meeting the performance requirements of vehicles and other equipment.

[0086] Based on the same inventive concept, this application also provides a vehicle that includes the aforementioned motor.

[0087] The vehicle provided in this application embodiment includes the aforementioned motor, and therefore possesses all the beneficial effects of the aforementioned motor. It can avoid the problem of the motor's normal operation being affected by the failure of the oil slinger component. Therefore, by ensuring the smooth and safe operation of the motor, the safety and stability of the vehicle's driving can be effectively improved.

[0088] Specifically, improved motor reliability reduces maintenance costs and safety risks associated with motor failures, enhancing overall vehicle reliability and user experience.

[0089] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An oil-slinging assembly, characterized in that, include: The rotating shaft (1) has a central hole (11) inside for the flow of cooling oil; the rotating shaft (1) also has a first guide hole (12) communicating with the central hole (11), and the first guide hole (12) is arranged radially through the rotating shaft (1); The iron core (2) is arranged around the rotating shaft (1) and abuts against the outer peripheral wall of the rotating shaft (1); one end of the iron core (2) is provided with a first end ring (3), the first end ring (3) is arranged around the rotating shaft (1) and a first annular cavity (31) is left between it and the rotating shaft (1); as well as A first oil-slinging ring (5) is arranged around the rotating shaft (1); one end of the first oil-slinging ring (5) is placed in the first annular cavity (31) and screwed to the rotating shaft (1); the first oil-slinging ring (5) is provided with a first channel, one end of the first channel is connected to the first guide hole (12), and the other end is used to guide to the side of the first oil-slinging ring (5) away from the first end ring (3); The other end of the first oil-slinging ring (5) extends out of the first annular cavity (31) and abuts against the end face of the first end ring (3) away from the iron core (2).

2. The oil-slinging assembly as described in claim 1, characterized in that, The first oil slinger ring (5) includes: The limiting part (51) abuts against the end face of the first end ring (3) away from the iron core (2), and the inner edge of the limiting part (51) extends toward the rotating shaft (1); The conductive part (53) is placed inside the first annular cavity (31) and screwed onto the rotating shaft (1); the conductive part (53) is connected to the limiting part (51); The guide section (53) is provided with an inlet channel (531), and the two ends of the inlet channel (531) are connected to the first annular cavity (31) and the first guide hole (12); the limiting section (51) has an outlet channel (511), one end of the outlet channel (511) is connected to the first annular cavity (31), and the other end extends to the side of the limiting section (51) away from the first end ring (3); the inlet channel (531) and the outlet channel (511) form the first channel; the cooling oil flows sequentially through the central hole (11), the first guide hole (12), the inlet channel (531), and the first annular cavity (31), and is discharged through the outlet channel (511).

3. The oil-slinging assembly as described in claim 2, characterized in that, Multiple first guide holes (12) are provided, and the multiple first guide holes (12) are spaced apart along the circumferential direction of the rotating shaft (1); The conductive part (53) has an annular groove (5311) recessed outward on the side facing the rotating shaft (1), and the annular groove (5311) is connected to a plurality of first guide holes (12). The conductive part (53) is also provided with a plurality of first connecting holes (5312), and the plurality of first connecting holes (5312) are arranged at intervals along the circumference of the rotating shaft (1); one end of the first connecting hole (5312) is connected to the annular groove (5311), and the other end is connected to the first annular cavity (31); The annular groove (5311) and the plurality of first connecting holes (5312) constitute the inlet channel (531).

4. The oil-slinging assembly as described in claim 3, characterized in that, In the circumferential direction of the rotating shaft (1), the first guide hole (12) and the first connecting hole (5312) are misaligned.

5. The oil-slinging assembly as described in claim 2, characterized in that, The first oil slinger ring (5) also includes: A connecting part (52) is disposed in the first annular cavity (31) and positioned between the conducting part (53) and the limiting part (51); the conducting part (53) is connected to the limiting part (51) through the connecting part (52); The connecting part (52) is provided with multiple sets of reinforcing ribs (54), and the two ends of the reinforcing ribs (54) extend to the limiting part (51) and the guiding part (53) respectively; the multiple sets of reinforcing ribs (54) are arranged at intervals along the circumference of the rotating shaft (1).

6. The oil-slinging assembly as described in claim 1, characterized in that, The first oil-slinging ring (5) is provided with a plurality of elastic claws (55), which are spaced apart circumferentially along the rotating shaft (1); the elastic claws (55) are used to clamp into the first end ring (3).

7. The oil-slinging assembly as described in claim 1, characterized in that, The oil-slinging assembly also includes: The second end ring (4) is located at the other end of the iron core (2); the second end ring (4) is arranged around the rotating shaft (1), and a second annular cavity (41) is left between the second end ring (4) and the rotating shaft (1); The second oil-slinging ring (6) is placed inside the second annular cavity (41); the second oil-slinging ring (6) is arranged around the rotating shaft (1) and abuts against the outer peripheral wall of the rotating shaft (1); The rotating shaft (1) is provided with a second guide hole (13) that communicates with the central hole (11), and the second guide hole (13) is arranged radially through the rotating shaft (1); the second oil slinger ring (6) is provided with a second channel, one end of the second channel is connected to the second guide hole (13), and the other end is connected to the side of the second oil slinger ring (6) away from the second end ring (4).

8. The oil-slinging assembly as described in claim 7, characterized in that, The iron core (2) is provided with a connecting channel (21) extending axially along the rotating shaft (1), and the second channel is connected to the first annular cavity (31) through the connecting channel (21).

9. An electric motor, characterized in that, Includes the oil-slinging component as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the motor as described in claim 9.

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