Motor and vehicle

Abstract

The utility model provides a motor and a vehicle, and relates to the technical field of vehicle parts, and the motor comprises an iron core body which is provided with a winding groove; the sealing cover is provided with an oil inlet and is positioned on one side of the iron core body along the axial direction of the iron core body; the insulating part comprises a first insulating part and a second insulating part, the second insulating part comprises a sealing section inserted into the iron core body and an extending section extending out of the iron core body, the first insulating part is arranged at intervals in the circumferential direction of the second insulating part and corresponds to the winding grooves, and the first insulating part is inserted into the corresponding winding groove; a cooling cavity is defined by the extending section and the sealing cover, and the cooling cavity is used for containing the end, extending out of the iron core body, of the motor winding. Therefore, after the cooling oil enters the cooling chamber from the oil inlet of the sealing cover, the end part of the motor winding in the cooling chamber is soaked by the cooling oil, so that the soaking oil cooling of the end part winding is realized, and the cooling effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, and particularly relates to a motor and a vehicle. Background Art

[0002] Since heat is generated during the energization of the motor winding, the temperature of the motor will gradually increase. Therefore, it is necessary to cool down the motor to prevent the motor from burning out.

[0003] At present, the cooling methods of motors include air cooling, water cooling and oil cooling. Among them, the cooling effect of oil cooling is better than that of water cooling and air cooling, so it is widely used. However, with the development of technology, the power density requirements of motors are also getting higher and higher, which puts forward higher requirements for the cooling of motors. Traditional oil-cooled motors generally use oil pipes or oil shower rings for radial spraying to cool the ends of the motor windings. However, the radial spraying cooling method easily allows the cooling oil to enter the air gap (i.e., the gap between the rotor core and the stator core), resulting in an increase in the oil churning loss of the motor and a decrease in the motor efficiency. Moreover, since the spray holes are arranged at intervals, it is impossible to ensure that the end windings at each winding slot can be cooled evenly, so the cooling effect is generally average. Summary of the Utility Model

[0004] The problem solved by the utility model is: how to improve the cooling effect of the end of the motor winding while ensuring the motor efficiency.

[0005] To solve the above problems, the utility model provides a motor and a vehicle.

[0006] In a first aspect, the utility model provides a motor, comprising:

[0007] A core body, provided with winding slots axially penetrating therethrough;

[0008] A sealing cover, provided with an oil inlet and located at one end of the core body along its axis;

[0009] An insulating member, including a first insulating portion and a second insulating portion integrally connected. The second insulating portion has a cylindrical structure, which includes a sealing section inserted into the core body and an extending section extending out of the core body. The first insulating portion is circumferentially spaced on the outer surface of the sealing section and corresponds to the winding slots. The first insulating portion is provided with a receiving groove for receiving the motor winding and is at least partially inserted into the corresponding winding slot; the extending section and the sealing cover enclose a cooling chamber, and the cooling chamber is communicated with the oil inlet and is used for receiving one end of the motor winding extending out of the core body.

[0010] Optionally, a notch is provided on a side wall of the winding slot close to the central axis of the iron core body, and the sealing section of the second insulating part is attached to the inner side wall of the iron core body and covers the notch.

[0011] Optionally, the insulating part further includes a limiting part sleeved outside the plurality of first insulating parts. One end of the sealing cover close to the iron core body is connected to the limiting part, and the limiting part abuts against an end face of the iron core body facing the sealing cover.

[0012] Optionally, an anti - detachment structure is provided at the connection between the sealing cover and the limiting part, and the anti - detachment structure is used to prevent the sealing cover from axially detaching from the insulating part along the iron core body.

[0013] Optionally, the iron core body is further provided with a cooling oil passage axially penetrating through it, and the cooling oil passage and the winding slot are alternately arranged along the circumferential direction of the iron core body, or the cooling oil passage is located on a side of the winding slot away from the central axis of the iron core body.

[0014] Optionally, the motor further includes a sealing member. One end of the sealing cover away from the iron core body is hermetically connected to the protruding section of the second insulating part through the sealing member;

[0015] And / or, a positioning structure is provided at the connection between the sealing cover and the protruding section of the second insulating part, and the positioning structure is used for positioning and installing the sealing cover.

[0016] Optionally, when the motor includes the sealing member, an annular boss is provided at one end of the sealing cover away from the iron core body, and an annular sealing groove is provided on the inner side surface of the annular boss. The sealing member is accommodated in the annular sealing groove.

[0017] Optionally, when the positioning structure is provided at the connection between the sealing cover and the protruding section of the second insulating part, the positioning structure includes a positioning protrusion and a positioning surface. One of the sealing cover and the protruding section is provided with the positioning protrusion, and the other of the sealing cover and the protruding section is provided with the positioning surface, and the positioning protrusion abuts and cooperates with the positioning surface.

[0018] In a second aspect, the present utility model provides a vehicle, including the motor as described above.

[0019] The beneficial effects of the motor of the present utility model are as follows: An insulating member with an integrated structure can be provided, and a receiving groove is arranged on the first insulating portion of the insulating member to provide an installation position for, for example, a flat wire winding. Moreover, by inserting the first insulating portion into the corresponding winding groove on the iron core body, the first insulating portion of the insulating member is used to protect the motor winding instead of the traditional insulating paper. At the same time, by providing a sealing cover with an oil inlet, inserting the sealing section of the second insulating portion of the insulating member into the iron core body, enclosing a cooling chamber with the protruding section of the second insulating portion extending out of the iron core body and the sealing cover covering the end of the motor winding, and making the cooling chamber communicate with the oil inlet and the receiving groove. In this way, when oil cooling the motor winding, the cooling oil can enter the cooling chamber from the oil inlet of the sealing cover and flow into the receiving groove to cool the motor winding located in the receiving groove. At the same time, the cooling oil in the cooling chamber can soak the end of the motor winding located in the cooling chamber, thereby realizing the oil immersion cooling of the end winding, and further improving the cooling effect of the end winding to a large extent. Moreover, since the sealing section and the protruding section of the second insulating portion are of an integrated structure, it makes the cooling oil flow from the cooling chamber into the receiving groove and does not leak into the air gap during the flow in the receiving groove, thereby preventing the cooling oil from entering the air gap and reducing the oil churning loss of the motor and improving the motor efficiency. In addition, setting the insulating member as an integrated structure not only facilitates mass production by processes such as injection molding, but also facilitates the overall assembly of the insulating member. Compared with the prior art of assembling insulating paper one by one, it can simplify the assembly process and improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an exploded structural schematic diagram of the motor in an embodiment of the present utility model;

[0021] Figure 2 is a structural schematic diagram of the motor in an embodiment of the present utility model;

[0022] Figure 3 is a cross-sectional schematic diagram of the motor in an embodiment of the present utility model;

[0023] Figure 4 is Figure 3 a partial enlarged view at A in

[0024] Figure 5 is a structural schematic diagram of the iron core body in an embodiment of the present utility model;

[0025] Figure 6 is a structural schematic diagram of the insulating member in an embodiment of the present utility model;

[0026] Figure 7 is a cross-sectional schematic diagram of the insulating member in an embodiment of the present utility model;

[0027] Figure 8 For Figure 7 Partial enlarged view at position B in

[0028] Figure 9 Cross-sectional schematic view of the sealing cover in the embodiment of the present utility model.

[0029] Explanation of reference numerals:

[0030] 1. Iron core body; 11. Winding slot; 112. Slot opening; 12. Cooling oil channel; 2. Sealing cover; 21. Oil inlet; 22. Annular sealing groove; 23. First wall body; 24. Second wall body; 25. Annular boss; 3. Insulating part; 31. First insulating part; 311. Accommodating groove; 32. Second insulating part; 33. Limiting part; 331. Limiting section; 332. Connecting section; 4. Sealing element; 5. Cooling chamber; 6. Anti-detachment structure; 61. Inner serrated structure; 62. Outer serrated structure; 7. Positioning structure; 71. Positioning protrusion; 72. Positioning surface; 100. Motor winding. Detailed implementation manners

[0031] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Although some embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present utility model. It should be understood that the drawings and embodiments of the present utility model are only for exemplary purposes and are not used to limit the protection scope of the present utility model.

[0032] The term "including" and its variations used herein are open-ended, that is, "including but not limited to"; the term "based on" is "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiment". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts such as "first" and "second" mentioned in the present utility model are only used to distinguish different devices, modules or units, and are not used to limit the order or mutual dependence relationship of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "multiple" mentioned in the present utility model are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0034] In the related art, the cooling methods of motors include air cooling, water cooling, and oil cooling. Among them, the cooling effect of oil cooling is better than that of water cooling and air cooling, so it is widely used. However, with the development of technology, the power density requirement of motors is also getting higher and higher, which puts forward higher requirements for the cooling of motors. Traditional oil-cooled motors generally use oil pipes or oil shower rings for radial spraying, that is, the cooling oil is sprayed radially along the stator core onto the end of the stator winding, so as to achieve the cooling of the end of the motor winding. However, the cooling method of radial spraying easily allows the cooling oil to enter the air gap (i.e., the gap between the rotor core and the stator core), resulting in an increase in the oil churning loss of the motor and a decrease in the motor efficiency. Moreover, since the spray holes are arranged at intervals, it is impossible to ensure that the end windings at each winding slot are evenly cooled, so the cooling effect is generally average.

[0035] In view of the problems existing in the above related art, the present utility model provides a motor and a vehicle.

[0036] Combined with Figures 1 to 3 As shown in the figure, a motor provided by an embodiment of the present utility model includes:

[0037] A core body 1, provided with winding slots 11 axially penetrating therethrough;

[0038] A sealing cover 2, provided with an oil inlet 21 and located at one end of the core body 1 along its axis;

[0039] An insulating member 3, including a first insulating portion 31 and a second insulating portion 32 integrally connected. The second insulating portion 32 has a cylindrical structure, which includes a sealing section inserted into the core body 1 and an extending section extending outside the core body 1. The first insulating portion 31 is arranged at intervals along the circumference of the second insulating portion 32 and corresponds to the winding slots 11. The first insulating portion 31 is used for accommodating the accommodating slots 311 of the motor winding 100 and is at least partially inserted into the corresponding winding slots 11, and the first insulating portion 31 is provided with; the extending section of the second insulating portion 32 and the sealing cover 2 enclose a cooling chamber 5, and the cooling chamber 5 is communicated with the oil inlet 21 and is used for accommodating one end of the motor winding 100 extending outside the core body 1.

[0040] Specifically, the iron core body 1 is usually a stator iron core, on which there are usually multiple winding slots 11 for installing stator windings, that is, the motor winding 100 is a stator winding, and the motor winding 100 is usually a flat wire winding. The multiple winding slots 11 usually penetrate along the axial direction of the iron core body 1 and are arranged at intervals along the circumferential direction of the iron core body 1. The insulating part 3 is of an integral structure and is usually made of an insulating material such as plastic. The insulating part 3 mainly includes a first insulating portion 31 and a second insulating portion 32 extending along the axial direction of the iron core body 1. The second insulating portion 32 is usually in a cylindrical structure, and the cavity surrounded by it is used for assembling the motor rotor. Since the iron core body 1 is usually a hollow cylindrical structure and its hollow part is a circular through hole, the second insulating portion 32 is usually a cylindrical structure. Moreover, the second insulating portion 32 includes a sealing section inserted into the iron core body 1 and an extending section extending out of the iron core body 1, and the first insulating portion 31 is arranged at intervals along the circumferential direction of the second insulating portion 32. The first insulating portion 31 is usually arranged in one-to-one correspondence with the winding slots 11, and moreover, the size and shape of the first insulating portion 31 are usually matched with those of the winding slots 11. The extending length of the second insulating portion 32 along its axial direction is usually greater than that of the first insulating portion 31, and the extending length of the first insulating portion 31 is usually greater than or equal to the extending length of the winding slots 11. At the same time, each first insulating portion 31 is provided with a receiving groove 311 for receiving the motor winding 100, and the receiving groove 311 usually penetrates along the extending direction of the first insulating portion 31. During assembly, usually, the insulating part 3 is first assembled onto the iron core body 1, then a part of, for example, a flat wire winding is inserted into the receiving groove 311 of the insulating part 3, and the other part of the flat wire winding is welded outside the iron core body 1 to the flat wire winding already inserted into the receiving groove 311 to complete the assembly of the flat wire winding. The sealing cover 2 is usually in a circular ring structure and is provided with an oil inlet 21. The oil inlet 21 can be arranged on the end face of the sealing cover 2 at the end far from the iron core body 1, or can be arranged on the circumferential outer side wall of the sealing cover 2, and no specific limitation is made here. The sealing cover 2 is usually arranged at one end of the iron core body 1 along its axial direction and is used to cover the non-welded end of the flat wire winding. One end of the sealing cover 2 close to the iron core body 1 can be connected to the first insulating portion 31 of the insulating part 3 or can be in contact with the iron core body 1. One end of the sealing cover 2 far from the iron core body 1 is usually connected to the extending section of the second insulating portion 32 of the insulating part 3, and moreover, the sealing cover 2 and the extending section of the second insulating portion 32 enclose a cooling chamber 5. The cooling chamber 5 is usually a circular ring-shaped cavity structure and is communicated with both the oil inlet 21 on the sealing cover 2 and the receiving groove 311 on the first insulating portion 31, and one end of the motor winding 100 extending out of the iron core body 1 is received in the cooling chamber 5.

[0041] When oil-cooling the end of the motor winding 100, the cooling oil enters the cooling chamber 5 from the oil inlet 21 of the sealing cover 2, so that the end of the motor winding 100 located in the cooling chamber 5 is immersed in the cooling oil, thereby realizing the oil immersion cooling of the end winding.

[0042] In this embodiment, an insulating member 3 with an integral structure can be provided, and a receiving groove 311 can be provided on the first insulating portion 31 of the insulating member 3 to provide an installation position for, for example, a flat wire winding. Moreover, by inserting the first insulating portion 31 into the corresponding winding slot 11 on the iron core body 1, the first insulating portion 31 of the insulating member 3 is used to protect the motor winding 100 instead of the traditional insulating paper. At the same time, by providing a sealing cover 2 with an oil inlet 21, and inserting the sealing section of the second insulating portion 32 of the insulating member 3 into the iron core body 1, the protruding section of the second insulating portion 32 extending outside the iron core body 1 and the sealing cover 2 covering the end of the motor winding 100 enclose a cooling chamber 5, and the cooling chamber 5 is communicated with the oil inlet 21 and the receiving groove 311. In this way, when oil-cooling the motor winding 100, the cooling oil can enter the cooling chamber 5 from the oil inlet 21 of the sealing cover 2 and flow into the receiving groove 311 to cool the motor winding 100 located in the receiving groove 311. At the same time, the cooling oil in the cooling chamber 5 can immerse the end of the motor winding 100 located in the cooling chamber 5, thereby realizing the oil immersion cooling of the end winding, and further improving the cooling effect of the end winding to a large extent. Moreover, since the sealing section and the protruding section of the second insulating portion 32 are of an integral structure, it is ensured that the cooling oil flows from the cooling chamber 5 into the receiving groove 311 and does not leak into the air gap during the flow in the receiving groove 311, thereby preventing the cooling oil from entering the air gap and reducing the oil churning loss of the motor and improving the motor efficiency. In addition, setting the insulating member 3 as an integral structure not only facilitates mass production by processes such as injection molding, but also facilitates the overall assembly of the insulating member 3. Compared with the prior art of assembling insulating paper one by one, the assembly process can be simplified and the assembly efficiency can be improved.

[0043] Furthermore, as shown in Figure 1 A pipe joint is provided at the oil inlet 21 of the sealing cover 2. In this way, it is convenient to connect the pipe joint with an oil pipe and fix the oil pipe on the pipe joint.

[0044] Furthermore, as shown in Figure 2 and Figure 9 The sealing cover 2 includes a first wall body 23 and a second wall body 24 connected vertically. The first wall body 23 constitutes the outer side wall of the sealing cover 2, and the second wall body 24 constitutes the axial end of the sealing cover 2. The cooling chamber 5 is jointly enclosed by the first wall body 23, the second wall body 24 and the protruding section of the second insulating portion 32.

[0045] Optionally, in combination with Figure 2 and Figure 5 As shown, on one side wall of the winding slot 11 close to the central axis of the iron core body 1, there is a notch 112, and the sealing section of the second insulating part 32 is attached to the inner side wall of the iron core body 1 and covers the notch 112.

[0046] In this optional embodiment, the sealing section of the second insulating part 32 generally completely covers the notch 112 of each winding slot 11. In this way, by using the sealing section of the second insulating part 32 of the insulating part 3 to cover the notch 112 of the winding slot 11, it is possible to prevent the cooling oil from entering the air gap from the notch 112 of the winding slot 11, thereby further reducing the oil churning loss of the motor and further improving the motor efficiency. Moreover, the sealing section of the second insulating part 32 of the insulating part 3 can replace the traditional slot wedge structure to block the notch 112. Compared with the method of assembling the slot wedges one by one, this can simplify the assembly process and improve the assembly efficiency.

[0047] Optionally, in combination with Figure 6 and Figure 7 As shown, the first insulating part 31 is arranged on the outer surface of the sealing section of the second insulating part 32.

[0048] In this optional embodiment, arranging the first insulating part 31 on the outer surface of the second insulating part 32 can be understood as that the end face of the first insulating part 31 close to the central axis of the second insulating part 32 is attached and connected to the outer surface of the second insulating part 32, that is to say, the end face of the first insulating part 31 close to the central axis of the second insulating part 32 is coplanar with the outer surface of the second insulating part 32. At the same time, on one side wall of the winding slot 11 close to the central axis of the iron core body 1, there is a notch 112, and the size of the notch 112 matches the size of the connection part between the first insulating part 31 and the second insulating part 32. When inserting the insulating part 3 into the iron core body 1, at least part of the first insulating part 31 is accommodated in the corresponding winding slot 11, the sealing section of the second insulating part 32 is accommodated in the hollow part of the iron core body 1, and the connection part between the first insulating part 31 and the sealing section of the second insulating part 32 is accommodated in the notch 112. In this way, by arranging the first insulating part 31 on the outer surface of the sealing section of the second insulating part 32, on the one hand, it can increase the connection area between the first insulating part 31 and the second insulating part 32, ensure the stability of the connection between the two, and facilitate the overall insertion of the insulating part 3 onto the iron core body 1. On the other hand, it enables the insulating part 3 to be applicable to the stator iron core with a notch 112 in the winding slot 11.

[0049] In other embodiments, one end of the first insulating portion 31 away from the sealing cover 2 is connected to one end of the sealing section of the second insulating portion 32 away from the sealing cover 2 through, for example, an annular connecting portion. That is to say, there is a spacing between the first insulating portion 31 and the sealing section of the second insulating portion 32 in the circumferential direction of the second insulating portion 32. At this time, a notch 112 may or may not be provided on the side wall of the winding slot 11 close to the central axis of the iron core body 1. In this way, the insulating member 3 can be applied not only to the stator core with the notch 112 in the winding slot 11, but also to the stator core with the closed winding slot 11.

[0050] Optionally, as shown in combination with Figure 4 , Figure 6 and Figure 7 , the insulating member 3 further includes a limiting portion 33 sleeved outside the plurality of first insulating portions 31. One end of the sealing cover 2 close to the iron core body 1 is connected to the limiting portion 33, and the limiting portion 33 abuts against the end face of the iron core body 1 facing the sealing cover 2.

[0051] In this optional embodiment, the limiting portion 33 is generally in an annular structure, sleeved outside the plurality of first insulating portions 31, and the limiting portion 33 and the first insulating portion 31 are generally integrally connected. In addition, the limiting portion 33 may be located inside the cooling chamber 5 or outside the cooling chamber 5, and no specific limitation is made here. When the limiting portion 33 is located inside the cooling chamber 5, the sealing cover 2 is connected to the outer side wall of the limiting portion 33; when the limiting portion 33 is located outside the cooling chamber 5, the sealing cover 2 is connected to one end of the limiting portion 33 away from the iron core body 1. During the process of inserting the insulating member 3 into the iron core body 1, when the limiting portion 33 abuts against the end face of the iron core body 1 facing the sealing cover 2, it indicates that the insulating member 3 is installed in place. In this way, the accurate installation of the insulating member 3 is ensured.

[0052] Optionally, as shown in combination with Figure 4 , the limiting portion 33 is located inside the cooling chamber 5. At this time, the sealing cover 2 is connected to the outer side wall of the limiting portion 33. In this way, the size of the insulating member 3 in its axial direction can be shortened, thereby reducing the axial size of the motor and facilitating the layout of the motor.

[0053] Optionally, as shown in combination with Figure 4 , an anti-disengagement structure 6 is provided at the connection between the sealing cover 2 and the limiting portion 33. The anti-disengagement structure 6 is used to prevent the sealing cover 2 from disengaging from the insulating member 3 along the axial direction of the iron core body 1. In this way, the connection firmness between the sealing cover 2 and the limiting portion 33 can be improved, and it is avoided that the sealing cover 2 affects the normal operation of the motor due to falling off during the operation of the motor.

[0054] In one example, as shown in combination with Figure 4As shown, the anti - detachment structure 6 can be composed of an inner serrated structure 61 provided on the sealing cover 2 and an outer serrated structure 62 provided on the limiting portion 33, and the inclination directions of the inner serrated structure 61 and the outer serrated structure 62 are opposite. At this time, the anti - detachment between the sealing cover 2 and the limiting portion 33 is realized through the inner and outer serrated structures. In another example, the anti - detachment structure 6 can be composed of a clamped anti - detachment protrusion and an anti - detachment groove. At this time, the sealing cover 2 is first sleeved on the limiting portion 33 along the axial direction, and then rotated circumferentially so that the anti - detachment protrusion and the anti - detachment groove form a clamped fit, thereby playing an anti - detachment role. In other examples, the anti - detachment structure 6 can be composed of an internal thread structure and an external thread structure. At this time, the sealing cover 2 and the limiting portion 33 are thread - connected, thereby playing an anti - detachment role. In addition, the anti - detachment structure 6 can also be a structure such as glue or hot - melt adhesive. At this time, the connection between the sealing cover 2 and the limiting portion 33 is realized by bonding.

[0055] Furthermore, in combination with Figure 4 and Figure 8 As shown, the limiting portion 33 includes a limiting section 331 and a connecting section 332 which are connected to each other. The connecting section 332 is located radially outside the limiting section 331 (that is, on the side of the limiting section 331 away from the central axis of the second insulating portion 32). The anti - detachment structure 6 is provided between the sealing cover 2 and the connecting section 332, and the first end of the connecting section 332 is flush with the first end of the limiting section 331. The second end of the connecting section 332 is located on the side of the second end of the limiting section 331 away from the iron core body 1. Among them, the first end and the second end of the connecting section 332 are respectively the two ends of the connecting section 332 along the axial direction of the second insulating portion 32, and the first end and the second end of the limiting section 331 are respectively the two ends of the limiting section 331 along the axial direction of the second insulating portion 32, and the first end of the connecting section 332 and the first end of the limiting section 331 are close to the iron core body 1.

[0056] In this embodiment, the limiting section 331 and the connecting section 332 are coaxially arranged annular structures, and moreover, the limiting section 331 and the connecting section 332 are usually perpendicularly arranged. In addition, the first end of the connecting section 332 is flush with the first end of the limiting section 331, while the second end of the connecting section 332 is located on the side of the second end of the limiting section 331 away from the iron core body 1, that is, the second end of the connecting section 332 exceeds the second end of the limiting section 331. That is to say, the dimension of the limiting section 331 along the axial direction of the second insulating portion 32 is smaller than the dimension of the connecting section 332 along the axial direction of the second insulating portion 32. In this way, the connection area between the sealing cover 2 and the limiting portion 33 can be increased by increasing the axial dimension of the connecting section 332. On the one hand, the firmness of the connection between the sealing cover 2 and the limiting portion 33 can be further improved. On the other hand, it is convenient to process anti - detachment structures 6 such as inner and outer serrated structures or inner and outer thread structures at the connection between the sealing cover 2 and the limiting portion 33.

[0057] Optionally, in combination with Figure 5As shown, the iron core body 1 is also provided with a cooling oil duct 12 penetrating axially therethrough. The cooling oil duct 12 and the winding slots 11 are arranged alternately along the circumferential direction of the iron core body 1, or the cooling oil duct 12 is located on one side of the winding slots 11 away from the central axis of the iron core body 1.

[0058] In this alternative embodiment, the cooling oil duct 12 can be arranged on one side of the winding slots 11 along the circumferential direction of the iron core body 1. At this time, the cooling oil duct 12 and the winding slots 11 are arranged alternately along the circumferential direction of the iron core body 1; the cooling oil duct 12 can also be arranged on the side of the winding slots 11 away from the central axis of the iron core body 1, that is, on the radially outer side of the winding slots 11. In this way, by arranging the cooling oil duct 12, the cooling oil liquid in the cooling chamber 5 at one end of the iron core body 1 can flow through the cooling oil duct 12 to the other end of the iron core body 1, and when flowing out of the cooling oil duct 12, it can spray-cool the end winding at the other end of the iron core body 1. Thus, while ensuring the cooling effect, the spray structure such as a spray ring at the other end of the iron core body 1 can be cancelled, thereby reducing the number of components, simplifying the cooling structure of the motor, and reducing the production cost.

[0059] Since if the cooling oil duct 12 is arranged on the radially outer side of the winding slots 11, the oil outlet end of the cooling oil duct 12 will be in the tangential direction of the end winding, resulting in the spray direction of the cooling oil liquid flowing out of the oil outlet end of the cooling oil duct 12 also being in the tangential direction of the end winding, which easily causes most of the cooling oil liquid to flow away from the outer surface of the end winding, and the cooling effect is not good. Therefore, in practical applications, it is usually preferred that the cooling oil duct 12 and the winding slots 11 are arranged alternately along the circumferential direction of the iron core body 1. In this way, the oil outlet end of the cooling oil duct 12 is located inside the end winding, so that the cooling oil liquid flowing out of the oil outlet end of the cooling oil duct 12 can be sprayed radially, thereby ensuring that the cooling oil liquid can spray directly on the winding welding end, and the cooling effect is better.

[0060] Optionally, as shown in Figure 2 and Figure 4 , the motor further includes a seal 4. One end of the seal cover 2 away from the iron core body 1 is hermetically connected to the protruding section of the second insulating part 32 through the seal 4. In this way, the sealing performance of the cooling chamber 5 can be improved by enhancing the sealing performance at the connection between the seal cover 2 and the second insulating part 32, thereby preventing the cooling oil liquid in the cooling chamber 5 from leaking into the air gap from the connection between the seal cover 2 and the second insulating part 32, further avoiding the cooling oil liquid entering the air gap and reducing the motor loss.

[0061] Furthermore, as shown in Figure 4 , the seal 4 is sleeved on the protruding section of the second insulating part 32, or the seal 4 is in sealing contact with the axial end face of the protruding section of the second insulating part 32.

[0062] In this embodiment, the seal 4 is generally in the structure of a sealing ring. It can be sleeved on the protruding section of the second insulating part 32 to form a radial seal, or can be arranged between the sealing cover 2 and the axial end face of the second insulating part 32 to form an end face seal. In practical applications, it can be designed according to needs, and no specific limitation is made here.

[0063] Furthermore, as shown in Figure 4 , an annular boss 25 is provided at one end of the sealing cover 2 away from the iron core body 1. An annular sealing groove 22 is provided on the inner side surface of the annular boss 25, and the seal 4 is accommodated in the annular sealing groove 22. Among them, the annular boss 25 is usually arranged on the second wall body 24 of the sealing cover 2 and is located in the cooling chamber 5. In this way, the structural strength of the sealing cover 2 can be improved by arranging the annular boss 25. Moreover, by arranging the annular sealing groove 22 on the inner side surface of the annular boss 25 to accommodate the seal 4, not only can the occupied space of the seal 4 be reduced, but also the seal 4 can be limited and positioned by the groove wall of the annular sealing groove 22, thereby improving the convenience of assembly.

[0064] Optionally, as shown in Figure 4 , a positioning structure 7 is provided at the connection of the protruding section of the sealing cover 2 and the second insulating part 32, and the positioning structure 7 is used for positioning and installing the sealing cover 2.

[0065] In this optional embodiment, a seal 4 and / or a positioning structure 7 are provided at the connection of the protruding section of the sealing cover 2 and the second insulating part 32. When both the seal 4 and the positioning structure 7 are provided, the seal 4 is usually located on one side of the positioning structure 7 along the axial direction of the iron core body 1. For example, Figure 4 gives an example where the seal 4 is located on the side of the positioning structure 7 close to the iron core body 1. In addition, the positioning structure 7 can be composed of a positioning protrusion 71 and a positioning surface 72 introduced later, or can be composed of a positioning groove and a positioning protrusion, and no specific limitation is made here. In this way, when assembling the sealing cover 2, the positioning structure 7 can be used to position and install the sealing cover 2 to ensure that the sealing cover 2 is installed in place, thereby improving the accuracy of the installation of the sealing cover 2.

[0066] Furthermore, as shown in Figure 4 and Figure 9 , the positioning structure 7 includes a positioning protrusion 71 and a positioning surface 72. One of the protruding sections of the sealing cover 2 and the second insulating part 32 is provided with the positioning protrusion 71, and the other of the protruding sections of the sealing cover 2 and the second insulating part 32 is provided with the positioning surface 72, and the positioning protrusion 71 is in abutting cooperation with the positioning surface 72.

[0067] In this embodiment, for the convenience of description, it is described by taking the positioning protrusion 71 being provided on the sealing cover 2 and the positioning surface 72 being provided on the second insulating portion 32 as an example. The positioning protrusion 71 is usually provided on the annular boss 25 of the sealing cover 2, and the positioning surface 72 is usually the axial end face of the second insulating portion 32. Among them, the setting of the annular boss 25 can not only increase the connection area between the sealing cover 2 and the second insulating portion 32, but also provide a setting position for the annular sealing groove 22 and the positioning protrusion 71, which is convenient for processing. When assembling the sealing cover 2, if the positioning protrusion 71 abuts against the positioning surface 72, it indicates that the sealing cover 2 is installed in place. In this way, using the positioning protrusion 71 and the positioning surface 72 as the positioning structure 7 can simplify the structure of the positioning structure 7 and facilitate processing and manufacturing.

[0068] A vehicle provided by an embodiment of the present utility model includes the motor as described above.

[0069] The beneficial effects of the vehicle in this embodiment compared with the prior art are the same as those of the above-mentioned motor, and will not be elaborated here.

[0070] Although the present utility model is disclosed as above, the protection scope of the present utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims

1. A motor, characterized in that: include: The iron core body (1) is provided with a winding slot (11) penetrating along the axial direction thereof; A sealing cover (2) is provided with an oil inlet (21) and is located at one end of the core body (1) along its axial direction; The insulating member (3) comprises a first insulating portion (31) and a second insulating portion (32) connected in an integral manner, wherein the second insulating portion (32) is in a cylindrical structure and comprises a sealing section inserted into the core body (1) and an extending section extending out of the core body (1), wherein the first insulating portion (31) is arranged at intervals along the circumference of the second insulating portion (32) and is arranged corresponding to the winding slot (11), and the first insulating portion (31) is provided with an accommodating slot (311) for accommodating a motor winding (100) and is at least partially inserted into the corresponding winding slot (11); the extending section of the second insulating portion (32) and the sealing cover (2) enclose a cooling chamber (5), wherein the cooling chamber (5) is communicated with the oil inlet (21) and is used to accommodate an end of the motor winding (100) extending out of the core body (1).

2. The motor according to claim 1, characterized in that A slot wall of the winding slot (11) close to the central axis of the core body (1) is provided with a slot opening (112), and the sealing section of the second insulating portion (32) is in contact with the inner side wall of the core body (1) and covers the slot opening (112).

3. The motor according to claim 1, characterized in that The first insulating portion (31) is arranged on the outer surface of the sealing section of the second insulating portion (32).

4. The motor according to claim 1, characterized in that The insulating member (3) further comprises a limiting portion (33) sleeved outside the plurality of first insulating portions (31); one end of the sealing cover (2) close to the core body (1) is connected to the limiting portion (33), and the limiting portion (33) abuts against an end surface of the core body (1) facing the sealing cover (2).

5. The motor according to claim 4, characterized in that An anti-slip structure (6) is provided at the connection between the sealing cover (2) and the limiting portion (33), and the anti-slip structure (6) is used to prevent the sealing cover (2) from escaping from the insulating member (3) along the axial direction of the iron core body (1).

6. The motor according to claim 1, characterized in that The core body (1) is further provided with a cooling oil channel (12) extending through the core body along its axial direction; the cooling oil channel (12) and the winding slot (11) are alternately arranged along the circumference of the core body (1); or the cooling oil channel (12) is located on a side of the winding slot (11) away from the central axis of the core body (1).

7. The motor according to claim 1, characterized in that It also comprises a sealing member (4), wherein one end of the sealing cover (2) away from the core body (1) is sealedly connected to the extended section of the second insulating portion (32) through the sealing member (4); And / or, a positioning structure (7) is provided at the connection between the sealing cover (2) and the extended section of the second insulating part (32), and the positioning structure (7) is used to position and install the sealing cover (2).

8. The motor according to claim 7, characterized in that When the motor includes the sealing member (4), an annular boss (25) is provided at one end of the sealing cover (2) away from the core body (1), an annular sealing groove (22) is provided on the inner side surface of the annular boss (25), and the sealing member (4) is accommodated in the annular sealing groove (22).

9. The motor according to claim 7, characterized in that When the positioning structure (7) is provided at the connection between the sealing cover (2) and the extending section of the second insulating part (32), the positioning structure (7) comprises a positioning protrusion (71) and a positioning surface (72), one of the sealing cover (2) and the extending section is provided with the positioning protrusion (71), the other of the sealing cover (2) and the extending section is provided with the positioning surface (72), and the positioning protrusion (71) is in abutment with the positioning surface (72).

10. A vehicle, characterized in that: Comprising a motor as claimed in any one of claims 1 to 9.

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