Motor structure, motor and vehicle
By setting staggered grooves on the outer periphery of the stator ring assembly to form oil guiding channels, the problem of increasing the outer diameter of the stator core was solved, resulting in cost reduction and improved cooling effect.
Patent Information
- Application Number
- CN202423321839.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The existing technology involves opening oil channels on the stator core, which increases the outer diameter of the stator core and leads to increased costs.
By setting grooves on the outer periphery of the stator ring laminations, adjacent stator ring laminations are staggered and connected, forming an oil guiding groove that surrounds the inner wall of the motor housing to form an oil guiding channel, reducing the expansion of the stator core outer diameter and extending the contact time between the cooling oil and the core.
By reducing the amount of stator core material used under the same torque, costs are reduced while cooling efficiency is improved.
Smart Images
Figure CN223666108U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electric drive technology, and in particular to an electric motor structure, an electric motor, and a vehicle. Background Technology
[0002] The drive motor is the core component of an electric vehicle, responsible for converting electrical energy into mechanical energy to propel the vehicle. Since drive motors generate a significant amount of heat during operation, a well-designed heat dissipation system is crucial for ensuring normal operation, improving efficiency, and extending service life.
[0003] In related technologies, drive motors can be cooled by oil cooling. The stator of the drive motor includes a stator core and stator windings inserted into the stator core. Oil guide channels extending along the length of the stator core are formed on the stator core, and cooling oil flows through the oil guide channels to cool the drive motor.
[0004] However, in the above method, the outer diameter of the stator core needs to be increased to achieve the same torque, which leads to increased costs. Utility Model Content
[0005] This application provides an electric motor structure, an electric motor, and a vehicle to solve the problem that opening oil guide channels on the stator core results in an additional increase in the outer diameter of the stator core.
[0006] In a first aspect, an embodiment of this application provides a motor structure, comprising:
[0007] Motor housing;
[0008] The stator core is located inside the motor housing. The stator core is formed by stacking multiple stator ring laminations in sequence. At least one groove is provided on the outer periphery of each stator ring lamination. Two adjacent stator ring laminations are staggered, and the corresponding grooves of two adjacent stator ring laminations are connected so that all grooves together form at least one oil guide groove.
[0009] The oil guide groove and the inner wall of the motor housing together form an oil guide channel.
[0010] In one possible implementation, the motor structure provided in this application embodiment includes a stator ring lamination group comprising a plurality of stator ring laminations stacked sequentially, each stator ring lamination having at least one sub-groove, and the corresponding sub-grooves on two adjacent stator ring laminations being connected to form a groove.
[0011] In one possible implementation, the motor structure provided in this application embodiment has multiple stator rings in each group of stator rings having their sub-grooves staggered sequentially.
[0012] In one possible implementation, the motor structure provided in this application embodiment has at least one set of stator ring laminations in which multiple stator ring laminations are provided with corresponding sub-grooves in the axial direction of the stator ring laminations, and in another set of stator ring laminations in which multiple stator ring laminations are provided with staggered sub-grooves.
[0013] In one possible implementation, the motor structure provided in this application embodiment has multiple sub-grooves spaced apart on the outer periphery of each stator ring lamination.
[0014] In one possible implementation, the motor structure provided in this application embodiment has multiple slots spaced apart on the inner side of the stator ring lamination group;
[0015] The slots on each pair of adjacent sets of stator rings are connected one-to-one in the axial direction to form multiple winding slots, which extend along the axial direction of the stator core.
[0016] In one possible implementation, the motor structure provided in this application embodiment has an oil inlet and an oil outlet on the motor housing, and the oil inlet and the oil outlet are respectively connected to the oil guide channel.
[0017] In one possible implementation, the motor structure provided in this application embodiment has a first oil guide bracket and a second oil guide bracket respectively provided at both ends of the stator core;
[0018] The first oil guide bracket and the motor housing enclose a first oil cavity, and the second oil guide bracket and the motor housing enclose a second oil cavity. The first oil cavity and the second oil cavity are connected through an oil guide channel.
[0019] The oil inlet is connected to the first oil chamber, and the oil outlet is connected to the second oil chamber.
[0020] Secondly, an embodiment of this application provides an electric motor, including the motor structure described above.
[0021] Thirdly, an embodiment of this application provides a vehicle including a vehicle body and the aforementioned motor, the motor being mounted on the vehicle body.
[0022] This utility model provides a motor structure, a motor, and a vehicle. The motor structure includes a motor housing and a stator core. The stator core is disposed within the motor housing and is formed by sequentially stacking multiple stator laminations. Each stator lamination has at least one groove on its outer periphery. Adjacent stator laminations are staggered, and their corresponding grooves are interconnected, forming at least one oil-guiding groove. This oil-guiding groove, together with the inner wall of the motor housing, forms an oil-guiding channel. Thus, under the same torque, only a slight increase in the outer diameter of the stator core is needed, reducing costs. Furthermore, the staggered arrangement of adjacent stator laminations extends the length of the oil-guiding groove, thereby prolonging the contact time between the cooling oil and the stator core, thus improving the cooling effect. Attached Figure Description
[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0024] Figure 1 This is a partial structural diagram of the motor structure provided in an embodiment of this application;
[0025] Figure 2 for Figure 1 A schematic diagram of the stator core structure in one embodiment;
[0026] Figure 3 for Figure 2 A schematic diagram of the stator ring lamination assembly;
[0027] Figure 4 for Figure 3 A schematic diagram of the stator ring plate in the middle;
[0028] Figure 5 for Figure 1 A schematic diagram of the stator core structure in another embodiment;
[0029] Figure 6 for Figure 1 A schematic diagram of the stator core, the first oil guide bracket, and the second oil guide bracket in the diagram;
[0030] Figure 7 for Figure 1 The sectional view of AA in the diagram.
[0031] Explanation of reference numerals in the attached figures:
[0032] 10. Motor structure;
[0033] 100. Motor housing;
[0034] 101. Oil guide channel; 102. First oil chamber; 103. Second oil chamber;
[0035] 110. Oil inlet;
[0036] 120. Oil outlet;
[0037] 200. Stator core;
[0038] 210. Stator ring assembly; 211. Groove; 212. Slot; 213. Stator ring; 2131. Sub-groove;
[0039] 220. Oil guide groove;
[0040] 230. Winding groove;
[0041] 300. First oil guide bracket;
[0042] 310. First spray nozzle;
[0043] 400. Second oil guide bracket;
[0044] 410. Second spray nozzle;
[0045] 500. Seals;
[0046] 20. Stator windings;
[0047] 201. Welding end; 202. Insertion end.
[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0050] The terms “first,” “second,” “third,” and “fourth,” etc. (if present), in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0051] As described in the background section, the stator of the drive motor includes a stator core and stator windings inserted into the stator core. An oil guide channel extending along the length of the stator core is provided on the stator core, through which cooling oil flows to cool the drive motor.
[0052] However, in order to ensure the normal operation of the stator core, the outer diameter of the stator core needs to be increased, resulting in higher costs.
[0053] In existing technologies, oil guide channels are usually opened along the axial direction of the stator core in the yoke. To ensure the normal operation of the stator, the outer diameter of the stator core needs to be increased by about 5mm on each side. This increases the amount of material used in the stator core, leading to increased costs and reduced power and torque density of the motor.
[0054] To address the aforementioned problems in the existing technology, this utility model provides a motor structure, a motor, and a vehicle. The motor structure includes a motor housing and a stator core. The stator core is disposed within the motor housing and is formed by sequentially stacking multiple stator lamination groups. Each stator lamination group has at least one groove on its outer periphery. Adjacent stator lamination groups are staggered, and their corresponding grooves are interconnected, so that all grooves together form at least one oil-guiding groove. This oil-guiding groove, together with the inner wall of the motor housing, forms an oil-guiding channel. Thus, under the same torque, only a slight increase in the outer diameter of the stator core is needed, reducing costs. Furthermore, the staggered arrangement of adjacent stator lamination groups extends the length of the oil-guiding groove, thereby prolonging the contact time between the cooling oil and the stator core, thus improving the cooling effect.
[0055] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0056] Reference Figures 1 to 6 As shown, the motor structure 10 provided in this embodiment includes a motor housing 100 and a stator core 200. The stator core 200 is disposed inside the motor housing 100 and is formed by stacking multiple stator ring laminations 210 sequentially. At least one groove 211 is provided on the outer periphery of each stator ring lamination 210. Adjacent stator ring laminations 210 are staggered, and the corresponding grooves 211 on adjacent stator ring laminations 210 are connected, so that each groove 211 together forms at least one oil guiding groove 220.
[0057] The oil guiding groove 220 and the inner wall of the motor housing 100 together form an oil guiding channel 101.
[0058] It is understood that the motor structure 10 provided in this application embodiment can be used in the motor of an electric vehicle. The motor also includes a rotor and a stator winding 20 disposed within the motor housing 100. The stator winding 20 is disposed on the stator core 200, and the rotor is disposed within the stator core 200. Cooling oil can be injected into the motor housing 100 to cool the stator core 200 and the stator winding 20.
[0059] In this process, the grooves 211 on two adjacent stator ring laminations 210 are connected in sequence to form an oil guide groove 220. In this way, the cooling oil can flow through the oil guide channel 101 through the outer periphery of the stator core 200, thereby carrying away the heat generated by the stator core 200 and cooling it down.
[0060] By creating grooves 211 on the outer periphery of the stator ring assembly 210 to form oil guide grooves 220 in the stator core 200, compared to slotting the yoke of the stator core 200, the same effect can be achieved by slightly increasing the outer diameter of the stator core 200 under the same torque, thereby reducing the amount of material used in the stator core 200, reducing costs, and increasing the power and torque density of the motor.
[0061] For example, the outer diameter of the stator lamination group 210 can be 182mm to 185mm, thereby increasing the outer diameter of the stator core group 200 by only about 2mm compared to the prior art. Preferably, the outer diameter of the stator lamination group 210 can be 184mm to form a stator core 200 with an outer diameter of 184mm.
[0062] Furthermore, the adjacent stator ring laminations 210 are staggered, which extends the length of the oil guide groove 220, thereby extending the contact time between the cooling oil and the stator core 200 and improving the cooling effect.
[0063] The number of stator ring laminations 210 can be 2, 3, 4, 5, 6, or other numbers, and this application embodiment does not impose too many restrictions on this. Multiple stator ring laminations 210 can be stacked to form a stator core 200, and the axes of each stator ring lamination 210 coincide.
[0064] Reference Figure 3 and Figure 4 As shown, in some embodiments, the stator ring assembly 210 includes a plurality of stator rings 213 stacked sequentially, each stator ring 213 having at least one sub-groove 2131, and the corresponding sub-grooves 2131 on two adjacent stator rings 213 are connected to form a groove 211.
[0065] In the above embodiments, each stator ring assembly 210 can be formed by stacking multiple stator rings 213.
[0066] The number of stator rings 213 in each group of stator rings 210 can be 2, 3, 4, 5 or other numbers.
[0067] Reference Figure 3 and Figure 4 As shown, in some embodiments, the sub-grooves 2131 on the multiple stator rings 213 in each set of stator rings 210 are arranged in a staggered manner.
[0068] In the above embodiment, multiple sub-grooves 2131 are staggered in sequence so that the extension shape of the oil guide channel formed by the grooves 211 of each stator ring plate group 210 is arc-shaped, thereby extending the length of the oil guide channel.
[0069] In each set of stator ring plates 210, the stator ring plates 213 can be rotated to achieve the staggered setting of the sub-grooves 2131. The rotation angle between any two adjacent stator ring plates 213 can be the same, and they can all rotate along the first direction, thus forming an arc-shaped oil guide groove 220.
[0070] It is understood that the first direction can be clockwise or counterclockwise, and this application embodiment does not impose too many restrictions on this. The rotation angle can be 30°, 40° or 60°, etc., as long as the sub-grooves 2131 on two adjacent stator rings 213 can be staggered and connected, and this application embodiment does not impose too many restrictions on this.
[0071] For example, refer to Figure 2As shown, the stator core 200 can be formed by stacking five sets of stator laminations 210, each set including two stator laminations 213. The relative rotation angle between the two stator laminations 213 in each set is 40°, and the relative rotation angle between adjacent sets of stator laminations 210 is also 40°. This allows multiple grooves 211 to form an arc-shaped oil guide groove 220 surrounding the outer circumference of the stator core 200, the extension path of which is shown by the dashed line.
[0072] Reference Figure 5 As shown, in some embodiments, sub-grooves 2131 on multiple stator rings 213 in at least one set of stator ring groups 210 are correspondingly arranged in the axial direction of the stator ring group 210, while sub-grooves 2131 on multiple stator rings 213 in another set of stator ring groups are arranged in a staggered manner.
[0073] In the above embodiments, the extension shape of the oil guiding channel formed by the groove 211 of each stator ring lamination 210 can be bent, thereby extending the length of the oil guiding channel.
[0074] In this embodiment, the rotation direction between two adjacent stator ring laminations 210 may include a first direction and a second direction, with the first direction being opposite to the second direction, so as to form a bent oil guide groove 220. The rotation direction of the multiple stator rings 213 in the stator ring laminations 210 is similar.
[0075] It is understood that the first direction is clockwise and the second direction is counterclockwise; or, the first direction is counterclockwise and the second direction is clockwise. This application embodiment does not impose too many restrictions on this. The rotation angle can be 0°, 30°, 40° or 60°, etc., as long as the grooves 211 on two adjacent stator ring laminations 210 can be connected. This application embodiment does not impose too many restrictions on this.
[0076] For example, refer to Figure 5As shown, the stator core 200 can be formed by stacking three stator ring lamination groups 210. The grooves 211 on the three stator ring lamination groups 210 are connected in sequence, and each stator ring lamination group 210 includes two stator rings 213. The stator ring lamination groups 210 are defined as No. 1 to No. 3 from top to bottom. The upper stator ring 213 in stator ring lamination group 1 is rotated 60° relative to the lower stator ring 213 in a first direction. The upper stator ring 213 in stator ring lamination group 210 is rotated 0° relative to the lower stator ring 213. The upper stator ring 213 in stator ring lamination group 210 is rotated 60° relative to the lower stator ring 213 in a second direction. Stator ring group 210 1 rotates 60° relative to stator ring group 210 210 in a first direction, and stator ring group 210 3 rotates 60° relative to stator ring group 210 210 in a second direction. In this way, a bent oil guide groove 220 can be formed around the outer circumference of the stator core 200 through multiple grooves 211. At this time, the oil guide groove 220 is V-shaped bent, and the extension path of the oil guide groove 220 is shown by the dashed line.
[0077] Of course, in some other embodiments, the shape of the oil guide groove 220 can be S-shaped, which will not be described in detail.
[0078] Reference Figure 3 and Figure 4 As shown, in some embodiments, each stator ring 213 has a plurality of sub-grooves 2131 spaced apart on its outer periphery.
[0079] In the above embodiment, by providing multiple sub-grooves 2131 on the outer periphery of the stator ring plate 213, the stator ring plate assembly 210 has multiple grooves, thereby forming multiple oil guiding grooves 220, which increases the contact area between the cooling oil and the stator core 200, thereby improving the cooling effect.
[0080] For example, the number of sub-grooves 2131 on each stator ring 213 can be 6, 7, 8 or other numbers, and this application embodiment does not impose too many restrictions on this.
[0081] Reference Figures 2 to 5 As shown, in some embodiments, the inner side of the stator ring assembly 210 is provided with a plurality of slots 212 at intervals.
[0082] The slots 212 on each pair of adjacent stator ring laminations 210 are connected one-to-one in the axial direction to form a plurality of winding slots 230, which extend along the axial direction of the stator core 200.
[0083] In the above embodiment, the winding slot 230 can be used to install the stator winding 20. The slots 212 on each pair of adjacent stator ring laminations 210 are connected to form a winding slot 230 extending axially along the stator core 200, thereby facilitating the installation of the stator winding 20.
[0084] The number of slots 212 can be a multiple of 3, such as 48, 54, 72, etc., corresponding to the three-phase windings (i.e., U phase, V phase and W phase) in the stator winding 20, so as to form the same number of winding slots 230.
[0085] Specifically, the number of slots 212 is 54, and the number of winding slots 230 inside the stator core 200 is 54.
[0086] Reference Figure 7 As shown, in some embodiments, the motor housing 100 is provided with an oil inlet 110 and an oil outlet 120, and the oil inlet 110 and the oil outlet 120 are respectively connected to the oil guide channel 101.
[0087] In the above embodiment, cooling oil can enter the motor housing 100 through the oil inlet 110, then flow through the oil guide channel 101, thereby carrying the heat generated by the stator core 200, and then flow out of the motor housing 100 through the oil outlet 120.
[0088] Specifically, the oil inlet 110 and the oil outlet 120 can be located on opposite sides of the motor housing 100.
[0089] Reference Figure 6 and Figure 7 As shown, in some embodiments, the stator core 200 is provided with a first oil guide bracket 300 and a second oil guide bracket 400 at both ends.
[0090] The first oil guide bracket 300 and the motor housing 100 surround each other to form a first oil cavity 102, and the second oil guide bracket 400 and the motor housing 100 surround each other to form a second oil cavity 103. The first oil cavity 102 and the second oil cavity 103 are connected through the oil guide channel 101.
[0091] The oil inlet 110 is connected to the first oil chamber 102, and the oil outlet 120 is connected to the second oil chamber 103.
[0092] In the above embodiment, the cooling oil can enter the first oil chamber 102 through the oil inlet 110, then enter the oil guide channel 101 along the first oil guide bracket 300, flow into the second oil chamber 103, and finally flow out of the motor housing 100 through the oil outlet 120. This allows the cooling oil to flow through the two ends and the outer periphery of the stator core 200, increasing the contact area between the stator core 200 and the cooling oil, thereby improving the cooling effect.
[0093] For example, the first oil guide bracket 300 and the second oil guide bracket 400 can be annular to form an annular first oil cavity 102 and an annular second oil cavity 103, thereby corresponding to the oil guide groove 220 on the periphery of the stator core 200.
[0094] It is understandable that the stator winding 20 of the motor can be located inside the stator core 200. The stator winding 20 has a welding end 201 and a plug-in end 202, which are located at the two ends of the stator core 200, respectively.
[0095] The first oil guide bracket 300 is located between the welding end 201 and the motor housing 100, and the second oil guide bracket 400 is located between the plug-in end 202 and the motor housing 100.
[0096] Reference Figure 6 and Figure 7 As shown, in some specific embodiments, the first oil guide bracket 300 is provided with a plurality of first spray holes 310 at intervals, and the second oil guide bracket 400 is provided with a plurality of second spray holes 410 at intervals.
[0097] In the above embodiment, the first spray hole 310 is connected to the first oil chamber 102, so that the first oil chamber 102 can spray cooling oil onto the welding end 201 of the stator winding 20 through the first spray hole 310 to cool the welding end 201 of the stator winding 20. The second spray hole 410 is connected to the second oil chamber 103, so that the second oil chamber 103 can spray cooling oil onto the insertion end 202 of the stator winding 20 through the second spray hole 410 to cool the insertion end 202 of the stator winding 20. In this way, the stator winding 20 is further cooled, and the cooling effect is improved.
[0098] Understandably, the rotor of the motor can be located inside the stator winding 20. To prevent the cooling oil from contacting the rotor, an isolation sleeve can be installed on the outside of the rotor.
[0099] Reference Figure 7 As shown, in some specific embodiments, a sealing element 500 is sleeved between the first oil guide bracket 300 and the motor housing 100 bracket, and a sealing element 500 is also sleeved between the first oil guide bracket 300 and the motor housing 100 bracket to prevent cooling oil leakage.
[0100] For example, the seal 500 can be a silicone part, a rubber part, or other sealing material with a certain degree of elasticity. This application embodiment does not specifically limit this.
[0101] An embodiment of this application provides an electric motor, including the motor structure 10 as described above.
[0102] The motor may also include a rotor and a stator winding 20 disposed within the motor housing 100, with the stator winding 20 disposed on the stator core 200 and the rotor disposed within the stator core 200.
[0103] In this embodiment, since the motor adopts the motor structure 10 in the above embodiment, it also has the advantages and benefits brought by the motor structure 10, namely, reducing the material cost of the stator core 200 while improving the oil cooling effect.
[0104] This application provides a vehicle including a vehicle body and the above-mentioned motor, the motor being mounted on the vehicle body.
[0105] The vehicles provided in this application embodiment can be new energy vehicles, including but not limited to pure electric vehicles, hybrid electric vehicles, hydrogen fuel cell vehicles, etc., and this application embodiment does not specifically limit them.
[0106] The vehicle provided in this application embodiment has all the technical solutions and effects of the aforementioned motor, which will not be repeated here.
[0107] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.
[0108] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A motor structure, characterized in that, include: Motor housing (100); A stator core (200) is disposed inside the motor housing (100). The stator core (200) is formed by stacking multiple stator ring laminations (210) in sequence. At least one groove (211) is provided on the outer periphery of each stator ring lamination (210). Two adjacent stator ring laminations (210) are staggered, and the corresponding grooves (211) of two adjacent stator ring laminations (210) are connected to each other so that each groove (211) together forms at least one oil guide groove (220). The oil guiding groove (220) and the inner wall of the motor housing (100) together form an oil guiding channel (101).
2. The motor structure according to claim 1, characterized in that, The stator ring assembly (210) includes a plurality of stator rings (213) stacked sequentially. Each stator ring (213) is provided with at least one sub-groove (2131). The corresponding sub-grooves (2131) on two adjacent stator rings (213) are connected to form the groove (211).
3. The motor structure according to claim 2, characterized in that, The sub-grooves (2131) on the multiple stator rings (213) in each set of stator rings (210) are arranged in a staggered manner.
4. The motor structure according to claim 2, characterized in that, The sub-grooves (2131) on a plurality of stator rings (213) in at least one set of stator ring sets (210) are correspondingly arranged in the axial direction of the stator ring set (210), and the sub-grooves (2131) on a plurality of stator rings (213) in another set of stator ring sets (210) are arranged in a staggered manner.
5. The motor structure according to any one of claims 2 to 4, characterized in that, Each of the stator ring plates (213) has a plurality of sub-grooves (2131) spaced apart on its outer periphery.
6. The motor structure according to any one of claims 1 to 4, characterized in that, The stator ring assembly (210) has multiple slots (212) spaced apart on its inner side; The slots (212) on each pair of adjacent sets of stator rings (213) are connected one-to-one in the axial direction to form a plurality of winding grooves (230), which extend along the axial direction of the stator core (200).
7. The motor structure according to any one of claims 1 to 4, characterized in that, The motor housing (100) is provided with an oil inlet (110) and an oil outlet (120), and the oil inlet (110) and the oil outlet (120) are respectively connected to the oil guide channel (101).
8. The motor structure according to claim 7, characterized in that, The stator core (200) is provided with a first oil guide bracket (300) and a second oil guide bracket (400) at both ends; The first oil guide bracket (300) and the motor housing (100) surround to form a first oil cavity (102), and the second oil guide bracket (400) and the motor housing (100) surround to form a second oil cavity (103). The first oil cavity (102) and the second oil cavity (103) are connected through the oil guide channel (101). The oil inlet (110) is connected to the first oil chamber (102), and the oil outlet (120) is connected to the second oil chamber (103).
9. An electric motor, characterized in that, Includes the motor structure (10) as described in any one of claims 1 to 8.
10. A vehicle, characterized in that, It includes a vehicle body and a motor as described in claim 9, wherein the motor is disposed on the vehicle body.