Motor cooling structure, motor, electric control equipment and vehicle
By designing the motor cooling structure of the oil collection chamber, check valve and oil inlet channel in the oil-cooled motor, the problem of difficult to ensure the oil injection amount and oil pressure stability of the oil-cooled motor is solved, and a more uniform cooling effect and faster oil supply response are achieved.
Patent Information
- Application Number
- CN202420620620.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The discharge amount and oil pressure stability of the oil cooled motor at different speeds are difficult to ensure, resulting in unbalanced cooling effect.
A motor cooling structure is designed, including an oil collection chamber, a check valve and an oil inlet passage. The cooling oil enters the oil collection chamber through the check valve to ensure the stability of the oil pressure, and store cooling oil when the motor stops working, and quickly restores the cooling supply.
It improves the oil pressure stability when cooling oil is sprayed, ensures uniform cooling of the motor at different speeds and working conditions, reduces the risk of motor damage, and improves the oil supply response speed.
Smart Images
Figure CN222868701U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motors, and in particular relates to a motor cooling structure, a motor, an electric control device and a vehicle. Background Art
[0002] In the oil-cooled motor in the related art, at different speeds, due to the different rotation states of the central shaft and the different penetration depths of the cooling oil, the amount of cooling oil sprayed varies greatly at different speeds, making it difficult to ensure the stability of the oil pressure when the cooling oil is sprayed. Utility Model Content
[0003] The technical problem to be solved by the utility model is: in view of the technical problem that it is difficult to ensure the stability of the oil pressure when the cooling oil is sprayed out of the oil-cooled motor in the related technology, a motor cooling structure, a motor, an electronic control device and a vehicle are provided.
[0004] In order to solve the above technical problems, on the one hand, an embodiment of the utility model provides a motor cooling structure, including an oil collecting chamber, a one-way valve and an oil inlet channel arranged at one end of the oil collecting chamber, the one-way valve is arranged in the oil inlet channel, and the one-way valve is used to allow cooling oil to flow from the oil inlet channel into the oil collecting chamber in one direction.
[0005] According to the motor cooling structure of the embodiment of the utility model, an oil collecting chamber, a one-way valve and an oil inlet channel are provided, and the one-way valve is provided at the oil inlet channel, so that the cooling oil can only flow into the oil collecting chamber from the oil inlet channel in one direction. When the oil starts to be supplied to the oil inlet channel and a certain oil pressure is reached, the cooling oil pushes open the one-way valve and enters the oil collecting chamber. On the one hand, the existence of the oil collecting chamber can provide a pressure stabilizing effect during the oil throwing cooling process, thereby improving the stability of the oil supply pressure; on the other hand, due to the provision of the one-way valve, the cooling oil in the oil collecting chamber can be stored in the oil collecting chamber when the motor stops working. The stored cooling oil can quickly achieve a stable supply of cooling oil when the motor is started next time, thereby improving the oil supply response speed.
[0006] Optionally, the motor cooling structure further includes a flow guide component, and the flow guide component is used to connect the interior of the oil collecting cavity and the exterior of the motor cooling structure.
[0007] Optionally, the guide assembly includes an oil inlet hole, an oil stabilizing ring and a first oil outlet hole which are connected in sequence, the oil inlet hole is connected to the interior of the oil collecting chamber, the first oil outlet hole is connected to the outside of the motor cooling structure, the oil stabilizing ring is arranged along the circumference of the motor cooling structure, and the number of the oil inlet holes is consistent with the number of the first oil outlet holes.
[0008] Optionally, the first oil outlet hole is arranged along the radial direction of the motor cooling structure;
[0009] A plurality of the first oil outlet holes are provided, and the plurality of the first oil outlet holes are evenly arranged along the circumference of the motor cooling structure, and the distance between the center of each of the first oil outlet holes and the axis of the motor cooling structure is consistent.
[0010] Optionally, the flow guide assembly further includes a flow guide pipe, one end of the flow guide pipe is connected to the oil inlet hole, and the other end of the flow guide pipe is connected to the oil stabilizing ring.
[0011] Optionally, the flow guide assembly further includes an oil throwing pipe, and the oil throwing pipe is connected between the oil stabilizing ring and the first oil outlet hole.
[0012] Optionally, a plurality of the flow guide assemblies are provided, and the oil stabilizing rings of the plurality of the flow guide assemblies are arranged at intervals along the axial direction of the motor cooling structure, and the oil outlet holes of the plurality of the flow guide assemblies are arranged at intervals along the axial direction of the motor cooling structure.
[0013] Optionally, the motor cooling structure further includes a plugging cover, and the oil inlet hole is arranged on the plugging cover.
[0014] Optionally, the motor cooling structure further includes a cooling cavity, the cooling cavity, the oil collecting cavity and the motor cooling structure are coaxially arranged, and the cooling cavity and the oil collecting cavity are connected through an oil hole on the plugging cover.
[0015] Optionally, a second oil outlet hole is provided at one end of the cooling cavity away from the oil outlet hole.
[0016] Optionally, the motor cooling structure further includes a rotor core, which is sleeved on an outer shaft of the cooling cavity, the rotor core is coaxially arranged with the cooling cavity, and the first oil outlet hole is at least partially arranged toward the rotor core.
[0017] Optionally, among the multiple oil stabilizing rings of the guide assembly, some of the oil stabilizing rings are arranged on one side of the rotor core along the axial direction of the motor cooling structure, and the remaining oil stabilizing rings are arranged on the other side of the rotor core along the axial direction of the motor cooling structure.
[0018] On the other hand, an embodiment of the present invention provides a motor, which includes the above-mentioned motor cooling structure.
[0019] On the other hand, an embodiment of the utility model provides an electric control device, which includes the above-mentioned motor cooling structure or the above-mentioned motor.
[0020] On the other hand, an embodiment of the utility model provides a vehicle, which includes the above-mentioned motor cooling structure; or, includes the above-mentioned motor; or, includes the above-mentioned electronic control device. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of a motor cooling structure provided by an embodiment of the utility model;
[0022] Figure 2 yes Figure 1 A schematic diagram from another angle;
[0023] Figure 3 yes Figure 2 Sectional view at AA in the middle;
[0024] Figure 4 yes Figure 2 Cross-section at the middle BB;
[0025] Figure 5 yes Figure 3 Cross-section of the middle plug cover.
[0026] The reference numerals in the specification are as follows:
[0027] 1. Central axis; 101. Oil collecting chamber; 102. Oil inlet channel; 103, 103a, 103b, 103c, 103d, first oil outlet hole; 104, cooling chamber; 105, second oil outlet hole; 12. Flow guide assembly; 121, plugging cover; 1211, 1211a, 1211b, 1211c, 1211d, oil inlet hole; 1212, oil through hole; 122, 122a, 122b, 122c, 122d, flow guide pipe; 1221, 1221a, 1221b, 1221c, 1221d, flow guide channel; 13, oil stabilizing ring; 13a, first oil ring; 13b, second oil ring; 14, 14a, 14b, 14c, 14d, oil throwing pipe;
[0028] 2. Check valve;
[0029] 3. Rotor core. DETAILED DESCRIPTION
[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0031] In the related art, since the centrifugal force of the oil-cooled motor is relatively large when it is working, when the motor stops working, the cooling oil in the oil inlet and the oil-slinging hole may be completely thrown out of the central axis due to inertia. At this time, if the motor is restarted, the cooling oil needs to be refilled into the oil inlet. During the filling process, if the motor current is large and the internal temperature is too high, it is very easy to damage the motor. Even if the motor is not damaged, it is difficult to ensure the stability of the oil pressure when the cooling oil is sprayed out before the cooling oil fills the oil inlet.
[0032] In addition, when an oil-cooled motor is used in a vehicle, the motor will tilt or shake as the vehicle starts, stops, climbs a hill or turns, causing the cooling oil in the oil inlet of the center shaft to overflow outside the center shaft as the motor tilts or swings. This will make the oil pressure in the oil inlet unstable. Before the cooling oil fills the oil inlet, it is difficult to ensure the stability of the oil pressure when the cooling oil is sprayed out.
[0033] Therefore, an embodiment of the utility model provides a motor cooling structure to improve the stability of oil supply pressure.
[0034] like Figures 1 to 5 As shown, the motor cooling structure provided by the embodiment of the utility model includes an oil collecting chamber 101, a one-way valve 2 and an oil inlet channel 102 arranged at one end of the oil collecting chamber 101, the one-way valve 2 is arranged in the oil inlet channel 102, and the one-way valve 2 is used to allow cooling oil to flow from the oil inlet channel 102 into the oil collecting chamber 101 in a unidirectional manner.
[0035] The motor cooling structure provided by the embodiment of the utility model is provided with an oil collecting chamber 101, a one-way valve 2 and an oil inlet channel 102, and the one-way valve 2 is provided in the oil inlet channel 102, so that the cooling oil can only flow into the oil collecting chamber 101 from the oil inlet channel 102 in one direction. When the oil inlet channel 102 starts to be supplied with oil and reaches a certain oil pressure, the cooling oil pushes the one-way valve 2 and enters the oil collecting chamber 101. On the one hand, the existence of the oil collecting chamber 101 can provide a pressure stabilizing effect during the oil throwing cooling process, thereby improving the stability of the oil supply pressure; on the other hand, due to the provision of the one-way valve 2, the cooling oil in the oil collecting chamber 101 can be stored in the oil collecting chamber 101 when the motor stops working. The stored cooling oil can quickly realize a stable supply of cooling oil when the motor is started next time, thereby improving the oil supply response speed.
[0036] In one embodiment, if Figure 3 and Figure 4 As shown, the motor cooling structure also includes a guide component 12, and the guide component 12 is used to connect the interior of the oil collecting chamber 101 and the exterior of the motor cooling structure, so that the cooling oil in the oil collecting chamber 101 can be thrown out to the outside of the motor cooling structure. The cooling oil thrown out to the outside of the motor cooling structure will cool and protect the rotor core 3 inside the motor, and can also cool and lubricate the bearings inside the motor.
[0037] In one embodiment, if Figure 3 and Figure 4As shown, the guide assembly 12 includes an oil inlet hole 1211, an oil stabilizing ring 13 and a first oil outlet hole 103 which are connected in sequence, the oil inlet hole 1211 is connected to the inside of the oil collecting chamber 101, the first oil outlet hole 103 is connected to the outside of the motor cooling structure, the oil stabilizing ring 13 is arranged along the circumference of the motor cooling structure, and the number of the oil inlet holes 1211 is consistent with the number of the first oil outlet holes 103.
[0038] The arrangement of the oil stabilizing ring 13 can not only realize the communication between the oil inlet hole 1211 and the first oil outlet hole 103, but also provide a more stable oil supply process in cooperation with the oil collecting chamber 101, and the oil supply response during the startup process is faster.
[0039] In one embodiment, if Figures 1 to 4 As shown, a plurality of first oil outlet holes 103 are provided, and the plurality of first oil outlet holes 103 are evenly arranged along the circumference of the motor cooling structure, and the distance between the center of each first oil outlet hole 103 and the axis of the motor cooling structure is consistent. Each first oil outlet hole 103 is arranged along the radial direction of the motor cooling structure. The arrangement of the first oil outlet holes 103 can make the cooling oil be thrown out more evenly, avoiding uneven cooling inside the motor.
[0040] In one embodiment, if Figure 3 and Figure 4 As shown, the flow guide assembly 12 further includes a flow guide pipe 122, one end of which is connected to the oil inlet hole 1211, and the other end of which is connected to the oil stabilizing ring 13, so as to achieve communication between the oil inlet hole 1211 and the oil stabilizing ring 13. Specifically, a flow guide channel 1221 is provided on the flow guide pipe 122. The oil inlet hole 1211 is connected to the oil inlet of the flow guide channel 1221, and the oil outlet of the flow guide channel 1221 is connected to the oil stabilizing ring 13.
[0041] After the cooling oil enters the oil collecting chamber 101 through the oil inlet channel 102, it flows to the first oil outlet 103 through the oil inlet hole 1211 and the guide channel 1221 in sequence, so that the cooling oil is thrown out. The structure of the guide pipe 122 can ensure the smooth throwing out of the cooling oil.
[0042] In one embodiment, if Figure 3 and Figure 4 As shown, the flow guide assembly 12 further includes an oil throwing pipe 14, and the oil throwing pipe 14 is connected to the oil stabilizing ring 13 and the first oil outlet hole 103 to ensure smooth throwing out of the cooling oil.
[0043] In one embodiment, if Figures 1 to 4As shown, the guide assembly 12 is provided in plurality, the oil stabilizing rings 13 of the guide assembly 12 are arranged at intervals along the axial direction of the motor cooling structure, and the first oil outlet holes 13 of the guide assembly 12 are arranged at intervals along the axial direction of the motor cooling structure.
[0044] By providing a plurality of the guide components 12, and then providing a plurality of the oil stabilizing rings 13 and a plurality of the first oil outlet holes 13, the cooling effect is improved. At the same time, each of the oil stabilizing rings 13 can provide a stable pressure for the cooling oil entering the corresponding first oil outlet hole 103, thereby improving the uniformity of the oil distribution entering each first oil outlet hole 103.
[0045] In one embodiment, if Figure 3 and Figure 4 As shown, the motor cooling structure further includes a plugging cover 121 , and the oil inlet hole 1021 is arranged on the plugging cover 121 to achieve communication between the oil inlet hole 1021 and the oil collecting chamber 101 and the first oil outlet hole 103 .
[0046] In one embodiment, if Figure 3 and Figure 4 As shown, the motor cooling structure also includes a cooling chamber 104 connected to the oil collecting chamber 101. The cooling chamber 104, the oil collecting chamber 101 and the motor cooling structure are coaxially arranged. The cooling chamber 104 is connected to the oil collecting chamber 101 through the oil hole 1212 on the plugging cover 121, so that the cooling oil in the oil collecting chamber 101 can enter the cooling chamber 104.
[0047] In one embodiment, if Figure 3 and Figure 4 As shown, a second oil outlet hole 105 is provided at one end of the cooling cavity 104 away from the oil hole 1212. By providing the second oil outlet hole 105, the cooling oil in the cooling cavity 104 can be circulated in one direction, that is, the cooling oil enters the cooling cavity 104 through the oil hole 1212, and is then discharged to the outside of the motor cooling structure through the second oil outlet hole 105.
[0048] In one embodiment, if Figures 1 to 4 As shown, the motor cooling structure also includes a rotor core 3, which is sleeved on the outer shaft of the cooling cavity 104, the rotor core 3 is coaxially arranged with the cooling cavity 104, and the first oil outlet hole 103 is at least partially arranged toward the rotor core 3.
[0049] On the one hand, by sleeve-mounting the rotor core 3 on the outer shaft of the cooling cavity 104, the cooling oil in the cooling cavity 104 can cool the center of the rotor core 3; on the other hand, by at least partially arranging the first oil outlet hole 103 toward the rotor core 3, the periphery of the rotor core 3 can be cooled.
[0050] In addition, the first oil outlet hole 103 can be exposed from the rotor core 3 to avoid the rotor core 3 blocking the first oil outlet hole 103, ensuring that the cooling oil can be thrown out from the first oil outlet hole 103 to achieve cooling of the rotor core 3 and cooling and lubrication of structures such as bearings.
[0051] In one embodiment, if Figures 1 to 4 As shown, among the multiple oil stabilizing rings 13 of the guide assembly, some of the oil stabilizing rings 13 are arranged on one side of the rotor core 3 along the axial direction of the motor cooling structure, and the remaining oil stabilizing rings 13 are arranged on the other side of the rotor core 3 along the axial direction of the motor cooling structure, so as to cool the rotor core 3 from both sides of the rotor core 3.
[0052] In one embodiment, if Figure 3 and Figure 4 As shown, along the axial direction of the motor cooling structure, each of the oil-slinging pipes 14 can be interference-fitted with the rotor core 3, so that the oil-slinging pipes 14 are pressed against the rotor core 3 to prevent the rotor core 3 from colliding when rotating at a high speed and to avoid imbalance in the moment of inertia.
[0053] exist Figures 1 to 5 In the illustrated embodiment, two flow guide assemblies 12 are provided, and correspondingly, two oil stabilizing rings 13 are provided, namely, a first oil ring 13a and a second oil ring 13b. Along the axial direction of the motor cooling structure, the first oil ring 13a is provided on a side of the rotor core 3 close to the one-way valve 2, and the second oil ring 13b is provided on a side of the rotor core 3 away from the one-way valve 2.
[0054] The plugging cover 121 is provided with four oil inlet holes 1211 , namely, an oil inlet hole 1211 a , an oil inlet hole 1211 b , an oil inlet hole 1211 c , and an oil inlet hole 1211 d .
[0055] The guide pipes 122 are provided with four, namely guide pipe 122a, guide pipe 122b, guide pipe 122c and guide pipe 122d. Guide pipe 122a is provided with a guide channel 1221a, guide pipe 122b is provided with a guide channel 1221b, guide pipe 122b is provided with a guide channel 1221c, and guide pipe 122d is provided with a guide channel 1221d.
[0056] The oil inlet hole 1211a is connected to the guide channel 1221a, the oil inlet hole 1211b is connected to the guide channel 1221b, the oil inlet hole 1211c is connected to the guide channel 1221c, and the oil inlet hole 1211d is connected to the guide channel 1221d. The guide channel 1221a and the guide channel 1221b are connected to the first oil ring 13a, and the guide channel 1221c and the guide channel 1221d are connected to the second oil ring 13b.
[0057] The first oil outlet holes 103 are provided with four, namely a first oil outlet hole 103a, a first oil outlet hole 103b, a first oil outlet hole 103c and a first oil outlet hole 103d.
[0058] The oil-slinging pipes 14 are provided with four, namely, the oil-slinging pipe 14a, the oil-slinging pipe 14b, the oil-slinging pipe 14c and the oil-slinging pipe 14d. The oil-slinging pipes 14a and 14b are in communication with the first oil ring 13a, the oil-slinging pipes 14c and 14d are in communication with the second oil ring 13b, and the first oil outlet hole 103a is in communication with the oil-slinging pipe 14a, the first oil outlet hole 103b is in communication with the oil-slinging pipe 14b, the first oil outlet hole 103c is in communication with the oil-slinging pipe 14c, and the first oil outlet hole 103d is in communication with the oil-slinging pipe 14d, so that the first oil outlet hole 103a and the first oil outlet hole 103b are in communication with the first oil ring 13a, and the first oil outlet hole 103c and the first oil outlet hole 103d are in communication with the second oil ring 13b.
[0059] The oil-throwing pipe 14 a , the oil-throwing pipe 14 b , the oil-throwing pipe 14 c , and the oil-throwing pipe 14 d are respectively interference-fitted with the rotor core 3 .
[0060] In the first oil outlet hole 103a and the first oil outlet hole 103b connected with the first oil ring 13a, the center of the first oil outlet hole 103a and the center of the first oil outlet hole 103b are located on the same diameter of the motor cooling structure, that is, the line between the center of the first oil outlet hole 103a and the center of the first oil outlet hole 103b intersects with the central axis of the motor cooling structure, so that the first oil outlet hole 103a and the first oil outlet hole 103b are evenly (equally spaced) arranged along the circumference of the motor cooling structure, so that the cooling oil can be thrown out more evenly, avoiding uneven cooling inside the motor.
[0061] In the first oil outlet hole 103c and the first oil outlet hole 103d connected to the second oil ring 13b, the center of the first oil outlet hole 103c and the center of the first oil outlet hole 103d are located on the same diameter of the motor cooling structure, that is, the line between the center of the first oil outlet hole 103c and the center of the first oil outlet hole 103d intersects with the central axis of the motor cooling structure, so that the first oil outlet hole 103c and the first oil outlet hole 103d are evenly (equally spaced) arranged along the circumference of the motor cooling structure, so that the cooling oil can be thrown out more evenly, avoiding uneven cooling inside the motor.
[0062] Along the circumference of the motor cooling structure, the first oil outlet hole 103a, the first oil outlet hole 103d, the first oil outlet hole 103b and the first oil outlet hole 103c are arranged in sequence on the motor cooling structure. In the four oil-slinging pipes 14, the spacing between the first oil outlet hole 103a and the first oil outlet hole 103d, the spacing between the first oil outlet hole 103d and the first oil outlet hole 103b, the spacing between the first oil outlet hole 103b and the first oil outlet hole 103c, and the spacing between the first oil outlet hole 103c and the first oil outlet hole 103a are consistent, and the distance between the center of each of the first oil outlet holes 103 and the axis of the motor cooling structure is consistent, thereby improving the uniformity of the cooling oil being spun out and avoiding uneven cooling inside the motor.
[0063] In one embodiment, if Figure 3 and Figure 4 As shown, along the axial direction of the motor cooling structure, the plugging cover 121 is located on the side of the rotor core 3 close to the one-way valve 2. It can be understood that along the axial direction of the motor cooling structure, the plugging cover 121 is located between the rotor core 3 and the one-way valve 2, and the guide pipe 122 is provided on the side of the plugging cover 121 facing away from the one-way valve 2.
[0064] In one embodiment, if Figure 1 and Figure 4 As shown, the motor cooling structure also includes a central shaft 1, which is a hollow structure. The oil collecting chamber 101, the oil inlet channel 102, the first oil outlet hole 103, the cooling chamber 104 and the second oil outlet hole 105 are all arranged on the central shaft 1, and the oil collecting chamber 101 and the cooling chamber 104 are separated by the blocking cover 121. The rotor core 3 is sleeved on the central shaft 1 at a position corresponding to the cooling chamber 104, so as to cool the center of the rotor core 3 through the cooling chamber 104.
[0065] In one embodiment, the oil inlet end of each of the oil inlet holes 1211 can be designed as a throttling port, so that the cross-sectional area of the oil inlet end of each of the oil inlet holes 1211 is simultaneously smaller than the cross-sectional area of the oil outlet end of the corresponding oil inlet hole 1211, the cross-sectional area of the guide channel 1221, and the cross-sectional area of the first oil outlet hole 103, so that the oil inlet end of the oil inlet hole 1211 is the throttling position of the entire oil supply pipeline. The oil through hole 1212 is also designed as a throttling hole with a smaller cross-sectional area relative to the oil outlet hole 105, that is, the cross-sectional area of the oil through hole 1212 is smaller than the cross-sectional area of the oil outlet hole 105. Then, by controlling the relative cross-sectional area ratio between the oil inlet ports of different oil inlet holes 1211 and the oil through hole 1212, the oil distribution ratio between different first oil outlet holes 103 and the oil outlet hole 105 can be controlled. The oil inlets of the different oil inlet holes 1211 and the oil through holes 1212 are opened at similar radial positions (different circumferential positions). During the rotation of the central shaft 1, the oil inlet of each oil inlet hole 1211 and the oil through hole 1212 have the same platform and opportunity for distributing oil.
[0066] The motor provided in the embodiment of the utility model comprises the motor cooling structure provided in the above embodiment. Preferably, the motor is an oil-cooled motor.
[0067] The electric control device provided in the embodiment of the utility model includes the motor cooling structure provided in the above embodiment or the motor provided in the above embodiment.
[0068] The vehicle provided in the embodiment of the utility model includes the motor cooling structure provided in the above embodiment, or includes the motor provided in the above embodiment, or includes the electric control device provided in the above embodiment.
[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A motor cooling structure, characterized in that: It includes an oil collecting chamber, a one-way valve and an oil inlet channel arranged at one end of the oil collecting chamber. The one-way valve is arranged in the oil inlet channel, and the one-way valve is used to allow cooling oil to flow from the oil inlet channel to the oil collecting chamber in one direction.
2. The motor cooling structure according to claim 1, characterized in that: The motor cooling structure further includes a flow guide component, and the flow guide component is used to connect the interior of the oil collecting cavity and the exterior of the motor cooling structure.
3. The motor cooling structure according to claim 2, characterized in that: The guide assembly includes an oil inlet hole, an oil stabilizing ring and a first oil outlet hole which are connected in sequence, the oil inlet hole is connected to the interior of the oil collecting chamber, the first oil outlet hole is connected to the outside of the motor cooling structure, the oil stabilizing ring is arranged along the circumference of the motor cooling structure, and the number of the oil inlet holes is consistent with the number of the first oil outlet holes.
4. The motor cooling structure according to claim 3, characterized in that: The first oil outlet hole is arranged along the radial direction of the motor cooling structure; A plurality of the first oil outlet holes are provided, and the plurality of the first oil outlet holes are evenly arranged along the circumference of the motor cooling structure, and the distance between the center of each of the first oil outlet holes and the axis of the motor cooling structure is consistent.
5. The motor cooling structure according to claim 3, characterized in that: The flow guide assembly further includes a flow guide pipe, one end of which is communicated with the oil inlet hole, and the other end of which is communicated with the oil stabilizing ring.
6. The motor cooling structure according to claim 3, characterized in that: The flow guide assembly further includes an oil throwing pipe, and the oil throwing pipe is connected between the oil stabilizing ring and the first oil outlet hole.
7. The motor cooling structure according to claim 3, characterized in that: There are multiple flow guide components, multiple oil stabilizing rings of the flow guide components are arranged at intervals along the axial direction of the motor cooling structure, and multiple oil outlet holes of the flow guide components are arranged at intervals along the axial direction of the motor cooling structure.
8. The motor cooling structure according to any one of claims 3 to 7, characterized in that: The motor cooling structure further comprises a plugging cover, and the oil inlet hole is arranged on the plugging cover.
9. The motor cooling structure according to claim 8, characterized in that: The motor cooling structure further comprises a cooling cavity, wherein the cooling cavity, the oil collecting cavity and the motor cooling structure are coaxially arranged, and the cooling cavity and the oil collecting cavity are communicated with each other through an oil hole on the plugging cover.
10. The motor cooling structure according to claim 9, characterized in that: A second oil outlet hole is arranged at one end of the cooling cavity away from the oil outlet hole.
11. The motor cooling structure according to claim 9, characterized in that: The motor cooling structure also includes a rotor core, which is sleeved on the outer shaft of the cooling cavity. The rotor core is coaxially arranged with the cooling cavity, and the first oil outlet hole is at least partially arranged toward the rotor core.
12. The motor cooling structure according to claim 11, characterized in that: Among the multiple oil stabilizing rings of the guide assembly, some of the oil stabilizing rings are arranged on one side of the rotor core along the axial direction of the motor cooling structure, and the remaining oil stabilizing rings are arranged on the other side of the rotor core along the axial direction of the motor cooling structure.
13. A motor, characterized in that: The motor cooling structure comprises the motor cooling structure as described in any one of claims 1 to 12.
14. An electric control device, characterized in that: It comprises the motor cooling structure according to any one of claims 1 to 12 or the motor according to claim 13.
15. A vehicle, characterized in that: It comprises the motor cooling structure according to any one of claims 1 to 12; or, it comprises the motor according to claim 13; or, it comprises the electric control device according to claim 14.