Oil-cooled motor, driving device and electric vehicle

Abstract

The utility model provides an oil cooling motor, a driving device and an electric vehicle, the oil cooling motor comprises a stator iron core and a motor housing, the motor housing covers the periphery of the stator iron core and is connected with the stator iron core; wherein at least one oil guide cavity is formed between the outer circumferential surface of the stator iron core and the inner circumferential surface of the motor shell, and at least the oil guide cavity extends in the axial direction of the stator iron core so as to guide cooling oil. According to the utility model, the problem of poor structural strength of the stator core caused by the need of arranging an oil path on the stator core in the oil cooling mode of the stator core in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to an oil-cooled motor, a drive device and an electric vehicle. Background Art

[0002] With the development of new energy vehicles, the requirements for electric drive efficiency are getting higher and higher. The water cooling method cannot directly cool the stator, and the cooling effect is relatively poor, resulting in low efficiency of water-cooled motors. Direct stator oil cooling can significantly improve motor efficiency and sustained performance. The existing motor stator oil cooling methods are roughly classified into two types. One is to use an oil guide plate or oil guide pipe to spray the stator winding; the other is to open an oil circuit on the stator core to guide the oil to the stator winding for spraying the winding. At the same time, this oil circuit can directly cool the stator core.

[0003] However, the first oil cooling method mentioned above has a better cooling effect on the stator winding, but a poor cooling effect on the stator core; the second oil cooling method improves the cooling effect of the stator core, but requires opening an oil circuit on the stator core, which increases the process complexity, reduces the stiffness of the stator core, and may also increase the risk of cracking of the stator core. Utility Model Content

[0004] The main purpose of the utility model is to provide an oil-cooled motor, a drive device and an electric vehicle to solve the problem that the oil cooling method of the stator core in the prior art requires an oil circuit to be opened on the stator core, resulting in poor structural strength of the stator core.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an oil-cooled motor is provided, comprising a stator core and a motor housing, wherein the motor housing cover is arranged on the outer peripheral side of the stator core and is connected to the stator core; wherein at least one oil guide cavity is formed between the outer peripheral surface of the stator core and the inner peripheral surface of the motor housing, and at least the oil guide cavity extends along the axial direction of the stator core to guide the cooling oil.

[0006] Further, at least two first spacer bars are protrudingly provided on the outer circumferential surface of the stator core, and the two first spacer bars extend along the axial direction of the stator core, so that the two first spacer bars divide the annular gap between the outer circumferential surface of the stator core and the inner circumferential surface of the motor housing into at least two oil guide chambers; or, at least two second spacer bars are protrudingly provided on the inner circumferential surface of the motor housing, and the two second spacer bars extend along the axial direction of the motor housing, so that the two second spacer bars divide the annular gap between the outer circumferential surface of the stator core and the inner circumferential surface of the motor housing into at least two oil guide chambers.

[0007] Furthermore, at least two first spacer bars are protrudingly provided on the outer circumferential surface of the stator core, and the two first spacer bars extend axially along the stator core; at least two second spacer bars are protrudingly provided on the inner circumferential surface of the motor housing, and the two second spacer bars extend axially along the motor housing; wherein the number of the first spacer bars is equal to the number of the second spacer bars and they are arranged opposite to each other, and the first spacer bars are connected to the second spacer bars.

[0008] Furthermore, the first spacer bar and the second spacer bar are interference fit.

[0009] Furthermore, the first spacer bar and the second spacer bar are matched in a concave-convex manner.

[0010] Furthermore, there are multiple oil guide cavities, and the multiple oil guide cavities are evenly distributed on the outer peripheral side of the stator core.

[0011] Furthermore, there are multiple oil guiding cavities, and the cross-sectional areas of the cavity sections of the oil guiding cavities are equal.

[0012] Furthermore, the oil-cooled motor also includes a stator winding and an oil guide ring, wherein the stator winding is located at the axial end of the stator core; the oil guide ring is sleeved on the outer peripheral side of the stator winding, and the oil guide ring has a first oil guide channel and a second oil guide channel, wherein the first oil guide channel is used to communicate with the gap between the outer peripheral surface of the stator winding and the inner peripheral surface of the oil guide ring, and the second oil guide channel is used to communicate with the oil guide cavity.

[0013] Furthermore, the oil guide ring includes a ring body and an oil guide ring structure, wherein at least one first oil guide channel is opened in the circumferential direction of the ring body, and the first oil guide channel extends radially along the ring body; the oil guide ring structure is arranged at one axial end of the ring body, the oil guide ring structure has at least one second oil guide channel, and the second oil guide channel extends axially along the ring body.

[0014] Furthermore, the circumferential outer surface of the ring body has an annular groove, a first oil guide channel is opened on the bottom surface of the annular groove, and the second oil guide channel is communicated with the annular groove.

[0015] Furthermore, a plurality of first spacer bars are protruding from the outer peripheral surface of the stator core, and an axial end of the oil guide ring structure away from the ring body has a plurality of avoidance gaps, the plurality of avoidance gaps are arranged one-to-one correspondingly to the plurality of first spacer bars, and the avoidance gaps are used to avoid the first spacer bars.

[0016] Furthermore, the second oil guiding channel is opened on the arc-shaped plate section between two adjacent avoidance notches.

[0017] Furthermore, a plurality of second oil guiding channels are provided on the same arc-shaped plate segment, and the plurality of second oil guiding channels are arranged at intervals around the circumference of the oil guiding ring structure.

[0018] Furthermore, the plurality of second oil guiding channels are distributed at equal intervals.

[0019] Furthermore, there are a plurality of oil guide cavities, which are evenly distributed on the outer peripheral side of the stator core, and there are a plurality of arc-shaped plate segments, which are arranged in one-to-one correspondence with the plurality of oil guide cavities.

[0020] According to another aspect of the utility model, a drive device is provided, including an oil-cooled motor and a reducer, the motor shaft of the oil-cooled motor is drive-connected to the reducer, the oil pool of the reducer is connected to the oil guide cavity of the oil-cooled motor, so that the cooling oil in the oil pool flows into the oil guide cavity of the oil-cooled motor, and the oil-cooled motor is the above-mentioned oil-cooled motor.

[0021] According to another aspect of the present invention, an electric vehicle is provided, comprising an oil-cooled motor, wherein the oil-cooled motor is the above-mentioned oil-cooled motor.

[0022] By applying the technical solution of the utility model, at least one oil guide cavity is provided between the outer circumference of the stator core and the inner circumference of the motor housing, and at least the oil guide cavity extends along the axial direction of the stator core. In this way, it is ensured that the setting of the oil guide cavity plays a role in providing guidance for the cooling oil. While ensuring the cooling reliability of the outer circumference of the stator core by the cooling oil, it is avoided to open an oil circuit on the stator core, thereby ensuring that the stator core has sufficient structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic structural diagram of a driving device according to an optional embodiment of the utility model is shown;

[0025] Figure 2 Shows Figure 1 A schematic structural diagram of the driving device from another perspective;

[0026] Figure 3 Shows Figure 2 Schematic diagram of the cross-sectional structure from the AA perspective;

[0027] Figure 4 Shows Figure 1 A schematic diagram of a portion of the structure of an oil-cooled motor of a drive device;

[0028] Figure 5 Shows Figure 4 Schematic diagram of the exploded structure of the oil-cooled motor;

[0029] Figure 6 Shows Figure 5Schematic diagram of the structure of the oil guide ring of the oil-cooled motor.

[0030] The above drawings include the following reference numerals:

[0031] 1. Oil-cooled motor; 2. Reducer;

[0032] 10. stator core; 11. first spacer bar;

[0033] 20. Motor housing; 21. Second spacer bar;

[0034] 30. Oil guide cavity;

[0035] 40. Stator winding;

[0036] 50. Oil guide ring; 51. First oil guide channel; 52. Second oil guide channel; 53. Ring body; 531. Annular groove; 54. Oil guide ring structure; 541. Avoidance gap; 542. Arc plate segment. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In order to solve the problem that the oil cooling method of the stator core in the prior art requires an oil circuit to be opened on the stator core, resulting in poor structural strength of the stator core, the utility model provides an oil-cooled motor, a drive device and an electric vehicle, wherein: Figure 1 As shown, the driving device includes an oil-cooled motor 1 and a reducer 2, the motor shaft of the oil-cooled motor 1 is drivingly connected to the reducer 2, the oil pool of the reducer 2 is connected to the oil guide cavity 30 of the oil-cooled motor 1, so that the cooling oil in the oil pool flows into the oil guide cavity 30 of the oil-cooled motor 1, and the oil-cooled motor 1 is the above-mentioned and the following oil-cooled motor; the electric vehicle includes a driving device, and the driving device is the above-mentioned and the following driving device.

[0039] like Figures 1 to 6 As shown, the oil-cooled motor includes a stator core 10 and a motor housing 20, wherein the motor housing 20 is covered on the outer peripheral side of the stator core 10 and connected to the stator core 10; wherein at least one oil guide cavity 30 is formed between the outer peripheral surface of the stator core 10 and the inner peripheral surface of the motor housing 20, and at least the oil guide cavity 30 extends along the axial direction of the stator core 10 to guide the cooling oil.

[0040] At least one oil guide cavity 30 is provided between the outer circumference of the stator core 10 and the inner circumference of the motor housing 20. Meanwhile, at least the oil guide cavity 30 extends along the axial direction of the stator core 10. Thus, the provision of the oil guide cavity 30 can provide a guide for the cooling oil. While ensuring the cooling reliability of the outer circumference of the stator core 10 by the cooling oil, it is avoided to open an oil circuit on the stator core 10, thereby ensuring that the stator core 10 has sufficient structural strength.

[0041] like Figures 3 to 5 As shown, at least two first spacer bars 11 are protruding from the outer circumference of the stator core 10, and the two first spacer bars 11 extend axially along the stator core 10, so that the two first spacer bars 11 divide the annular gap between the outer circumference of the stator core 10 and the inner circumference of the motor housing 20 into at least two oil guide chambers 30.

[0042] Of course, in another embodiment of the present application not shown in the figure, at least two second spacer bars 21 are protruding from the inner circumference of the motor housing 20, and the two second spacer bars 21 extend along the axial direction of the motor housing 20, so that the two second spacer bars 21 divide the annular gap between the outer circumference of the stator core 10 and the inner circumference of the motor housing 20 into at least two oil guide chambers 30.

[0043] In addition, in another embodiment of the present application, at least two first spacer bars 11 are protrudingly provided on the outer circumference of the stator core 10, and the two first spacer bars 11 extend along the axial direction of the stator core 10; at least two second spacer bars 21 are protrudingly provided on the inner circumference of the motor housing 20, and the two second spacer bars 21 extend along the axial direction of the motor housing 20; wherein, the number of the first spacer bars 11 is equal to the number of the second spacer bars 21 and they are arranged oppositely, and the first spacer bars 11 are connected to the second spacer bars 21. In this way, by arranging the first spacer bars 11 on the outer circumference of the stator core 10 and arranging the second spacer bars 21 on the inner circumference of the motor housing 20, the connection reliability between the stator core 10 and the motor housing 20 is ensured, and the positioning, rotation prevention and flow diversion functions can also be played.

[0044] It should be noted that, in the present application, the divided oil guiding chambers 30 are not interconnected and do not interfere with each other, thereby ensuring the oil guiding reliability of each oil guiding chamber 30 .

[0045] It should be noted that, in the present application, the first spacer bar 11 and the second spacer bar 21 are interference fit. In this way, the connection reliability between the stator core 10 and the motor housing 20 is ensured, and the connection relationship between the two is simplified. Compared with the existing stator core 10 and the motor housing 20 fixed by bolts, the process is simpler and the anti-rotation effect is better. In addition, the positioning accuracy between the two is also improved.

[0046] Of course, in an embodiment of the present application which is not shown in the figure, the first spacer bar 11 and the second spacer bar 21 are matched with each other in a concave-convex manner. In this way, the connection reliability between the first spacer bar 11 and the second spacer bar 21 is ensured.

[0047] It should be noted that, in the present application, there are multiple oil guide cavities 30, and the multiple oil guide cavities 30 are evenly distributed on the outer peripheral side of the stator core 10. In this way, it is ensured that the multiple oil guide cavities 30 can cover the entire outer peripheral surface of the stator core 10 as much as possible, thereby ensuring a better overall cooling effect on the outer peripheral surface of the stator core 10.

[0048] Furthermore, there are multiple oil guide cavities 30 , and the cross-sectional areas of the oil guide cavities 30 are equal. In this way, each position of the outer peripheral surface of the stator core 10 can be evenly cooled, thereby ensuring the working reliability of the stator core 10 .

[0049] It should be noted that, in the present application, considering that the stator core 10 and the stator winding 40 will generate heat during operation, in order to ensure the cooling reliability of the stator core 10 and the stator winding 40 by the cooling oil, as shown in FIG. Figure 4 and Figure 5 As shown, the oil-cooled motor further includes a stator winding 40 and an oil guide ring 50, wherein the stator winding 40 is located at the axial end of the stator core 10; the oil guide ring 50 is sleeved on the outer peripheral side of the stator winding 40, and the oil guide ring 50 has a first oil guide channel 51 and a second oil guide channel 52, wherein the first oil guide channel 51 is used to communicate with the gap between the outer peripheral surface of the stator winding 40 and the inner peripheral surface of the oil guide ring 50, and the second oil guide channel 52 is used to communicate with the oil guide cavity 30. In this way, by setting the oil guide ring 50 to have a structural form of the first oil guide channel 51 and the second oil guide channel 52, it is ensured that the cooling oil flows into the gap between the outer peripheral surface of the stator winding 40 and the inner peripheral surface of the oil guide ring 50 through the first oil guide channel 51, thereby playing a cooling role on the stator winding 40, and it is ensured that the cooling oil flows into the oil guide cavity 30 through the second oil guide channel 52, thereby playing a cooling role on the stator core 10.

[0050] like Figures 4 to 6As shown, the oil guide ring 50 includes a ring body 53 and an oil guide ring structure 54, wherein at least one first oil guide channel 51 is opened in the circumferential direction of the ring body 53, and the first oil guide channel 51 extends along the radial direction of the ring body 53; the oil guide ring structure 54 is arranged at one axial end of the ring body 53, and the oil guide ring structure 54 has at least one second oil guide channel 52, and the second oil guide channel 52 extends along the axial direction of the ring body 53. In this way, by setting the oil guide ring 50 to include the ring body 53 and the oil guide ring structure 54, it is ensured that the first oil guide channel 51 and the second oil guide channel 52 do not interfere with each other, and it is ensured that the cooling oil can accurately cool the stator core 10 and the stator winding 40 respectively, thereby ensuring the operating reliability of the drive device.

[0051] like Figure 5 and Figure 6 As shown, the circumferential outer surface of the ring body 53 has an annular groove 531, the bottom surface of the annular groove 531 is provided with a first oil guide channel 51, and the second oil guide channel 52 is connected to the annular groove 531. In this way, the annular groove 531 plays a guiding and buffering role for the cooling oil, so that part of the cooling oil flowing into the annular groove 531 flows into the gap between the outer circumference of the stator winding 40 and the inner circumference of the oil guide ring 50 through the first oil guide channel 51, and the other part of the cooling oil flows into the oil guide cavity 30 through the second oil guide channel 52.

[0052] like Figure 4 and Figure 5 As shown, the outer peripheral surface of the stator core 10 is protrudingly provided with a plurality of first spacer bars 11, and the axial end of the oil guide ring structure 54 away from the ring body 53 has a plurality of avoidance gaps 541, and the plurality of avoidance gaps 541 are arranged one-to-one correspondingly to the plurality of first spacer bars 11, and the avoidance gaps 541 are used to avoid the first spacer bars 11. In this way, it is ensured that the oil guide ring structure 54 can be smoothly assembled on the stator core 10, and the connection reliability and assembly reliability between the two are ensured.

[0053] It should be noted that, in the present application, considering that the cross section of the oil guide cavity 30 is arc-shaped, in order to ensure the uniformity of the cooling oil flowing into the oil guide cavity 30, as shown in FIG. Figures 4 to 6 As shown, the second oil guide channel 52 is provided on the arc plate segment 542 between two adjacent avoidance notches 541. The same arc plate segment 542 has multiple second oil guide channels 52, and the multiple second oil guide channels 52 are arranged at intervals around the circumference of the oil guide ring structure 54. In this way, it is ensured that the same arc plate segment 542 arranged opposite to the same oil guide cavity 30 has multiple second oil guide channels 52, and the cooling oil can be distributed throughout the entire oil guide cavity 30 along the circumference and axial direction of the stator core 10 through the multiple second oil guide channels 52, thereby ensuring the cooling reliability of the stator core 10.

[0054] It should be noted that in the present application, the plurality of second oil guide channels 52 are evenly spaced, so as to ensure uniformity of the cooling oil in the annular groove 531 flowing into the oil guide cavity 30 through the second oil guide channels 52 , thereby ensuring the cooling reliability of the stator core 10 .

[0055] It should be noted that, in the present application, there are multiple oil guide cavities 30, which are evenly distributed on the outer peripheral side of the stator core 10, and there are multiple arc-shaped plate segments 542, which are arranged one-to-one correspondingly to the multiple oil guide cavities 30. In this way, it is ensured that the cooling oil can be spread over the outer peripheral surface of the entire stator core 10, thereby ensuring the cooling reliability of the stator core 10.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0058] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An oil-cooled motor, characterized in that: include: Stator core (10); A motor housing (20), the motor housing (20) being disposed on the outer peripheral side of the stator core (10) and connected to the stator core (10); At least one oil guide cavity (30) is formed between the outer circumference of the stator core (10) and the inner circumference of the motor housing (20), and at least the oil guide cavity (30) extends along the axial direction of the stator core (10) to guide cooling oil.

2. The oil-cooled motor according to claim 1, characterized in that: At least two first spacer bars (11) are protrudingly provided on the outer circumference of the stator core (10), and the two first spacer bars (11) extend along the axial direction of the stator core (10), so that the two first spacer bars (11) divide the annular gap between the outer circumference of the stator core (10) and the inner circumference of the motor housing (20) into at least two oil guide chambers (30); or, At least two second spacer bars (21) are protruding from the inner circumferential surface of the motor housing (20), and the two second spacer bars (21) extend along the axial direction of the motor housing (20), so that the two second spacer bars (21) divide the annular gap between the outer circumferential surface of the stator core (10) and the inner circumferential surface of the motor housing (20) into at least two oil guide chambers (30).

3. The oil-cooled motor according to claim 1, characterized in that: At least two first spacing bars (11) are protrudingly provided on the outer peripheral surface of the stator core (10), and the two first spacing bars (11) both extend along the axial direction of the stator core (10); At least two second spacing bars (21) are protrudingly provided on the inner circumferential surface of the motor housing (20), and the two second spacing bars (21) both extend along the axial direction of the motor housing (20); The number of the first spacer bars (11) is equal to the number of the second spacer bars (21) and they are arranged opposite to each other, and the first spacer bars (11) are connected to the second spacer bars (21).

4. The oil-cooled motor according to claim 3, characterized in that: The first spacer bar (11) and the second spacer bar (21) are interference fit.

5. The oil-cooled motor according to claim 3, characterized in that: The first spacer bar (11) and the second spacer bar (21) are matched in a concave-convex manner.

6. The oil-cooled motor according to claim 1, characterized in that: There are a plurality of oil guide cavities (30), and the plurality of oil guide cavities (30) are evenly distributed on the outer peripheral side of the stator core (10).

7. The oil-cooled motor according to claim 1, characterized in that: There are a plurality of oil guide cavities (30), and the cross-sectional areas of the cavity sections of the oil guide cavities (30) are equal.

8. The oil-cooled motor according to any one of claims 1 to 7, characterized in that: The oil-cooled motor also includes: A stator winding (40), the stator winding (40) being located at an axial end of the stator core (10); An oil guide ring (50) is sleeved on the outer peripheral side of the stator winding (40), and the oil guide ring (50) has a first oil guide channel (51) and a second oil guide channel (52), wherein the first oil guide channel (51) is used to communicate with the gap between the outer peripheral surface of the stator winding (40) and the inner peripheral surface of the oil guide ring (50), and the second oil guide channel (52) is used to communicate with the oil guide cavity (30).

9. The oil-cooled motor according to claim 8, characterized in that: The oil guide ring (50) comprises: A ring body (53), wherein at least one first oil guide channel (51) is opened in the circumferential direction of the ring body (53), and the first oil guide channel (51) extends in the radial direction of the ring body (53); An oil guide ring structure (54), wherein the oil guide ring structure (54) is arranged at one axial end of the ring body (53), and the oil guide ring structure (54) has at least one second oil guide channel (52), and the second oil guide channel (52) extends along the axial direction of the ring body (53).

10. The oil-cooled motor according to claim 9, characterized in that: The circumferential outer surface of the ring body (53) has an annular groove (531), the bottom surface of the annular groove (531) is provided with the first oil guide channel (51), and the second oil guide channel (52) is connected to the annular groove (531).

11. The oil-cooled motor according to claim 9, characterized in that: The outer peripheral surface of the stator core (10) is protrudingly provided with a plurality of first spacer bars (11); the axial end of the oil guide ring structure (54) away from the ring body (53) has a plurality of avoidance notches (541); the plurality of avoidance notches (541) are arranged in one-to-one correspondence with the plurality of first spacer bars (11); the avoidance notches (541) are used to avoid the first spacer bars (11).

12. The oil-cooled motor according to claim 11, characterized in that: The second oil guiding channel (52) is opened on the arc-shaped plate section (542) between two adjacent avoidance notches (541).

13. The oil-cooled motor according to claim 12, characterized in that: A plurality of the second oil guide channels (52) are provided on the same arc-shaped plate segment (542), and the plurality of the second oil guide channels (52) are arranged at intervals around the circumference of the oil guide ring structure (54).

14. The oil-cooled motor according to claim 13, characterized in that: A plurality of the second oil guide channels (52) are distributed at equal intervals.

15. The oil-cooled motor according to claim 12, characterized in that: There are a plurality of the oil guide chambers (30), and the plurality of the oil guide chambers (30) are evenly distributed on the outer peripheral side of the stator core (10); there are a plurality of the arc-shaped plate segments (542), and the plurality of the arc-shaped plate segments (542) are arranged in a one-to-one correspondence with the plurality of the oil guide chambers (30).

16. A driving device, characterized in that: include: An oil-cooled motor (1) and a reducer (2), wherein the motor shaft of the oil-cooled motor (1) is drivingly connected to the reducer (2), and the oil pool of the reducer (2) is connected to the oil guide cavity (30) of the oil-cooled motor (1), so that the cooling oil in the oil pool flows into the oil guide cavity (30) of the oil-cooled motor (1), and the oil-cooled motor (1) is the oil-cooled motor according to any one of claims 1 to 15.

17. An electric vehicle, characterized in that: It comprises a driving device, and the driving device is the driving device according to claim 16.

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