Motor and vehicle

Abstract

The invention 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 present invention relates to the technical field of vehicle parts, and in particular to a motor and a vehicle. Background Art

[0002] Since the motor windings generate heat during the power-on process, the temperature of the motor will gradually increase. Therefore, the motor needs to be cooled to prevent it from burning out.

[0003] At present, there are three cooling methods for motors: air cooling, water cooling, and oil cooling. Among them, oil cooling has better cooling effect than water cooling and air cooling, so it is widely used. However, with the development of technology, the power density requirements of motors are getting higher and higher, which puts higher requirements on the cooling of motors. Traditional oil-cooled motors generally use oil pipes or oil spray rings for radial spraying to cool the ends of the motor windings, but the radial spray cooling method easily causes the cooling oil to enter the air gap (that is, the gap between the rotor core and the stator core), resulting in greater oil stirring losses in the motor and reduced motor efficiency. Moreover, since the spray holes are arranged at intervals, it cannot be guaranteed that the end windings at each winding slot can be cooled evenly, so the cooling effect is average. Summary of the invention

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

[0005] In order to solve the above problems, the present invention provides a motor and a vehicle.

[0006] In a first aspect, the present invention provides a motor, comprising:

[0007] The core body is provided with winding slots penetrating along the axial direction thereof;

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

[0009] An insulating part includes a first insulating part and a second insulating part connected in an integral manner, wherein the second insulating part is a cylindrical structure, including a sealing section inserted in the core body and an extending section extending out of the core body, the first insulating part is arranged at intervals along the circumference of the second insulating part on the outer surface of the sealing section, and is arranged corresponding to the winding slot, and the first insulating part is provided with a receiving slot for accommodating the motor winding, and is at least partially inserted in the corresponding winding slot; the extending section and the sealing cover enclose a cooling chamber, the cooling chamber is connected to the oil inlet, and is used to accommodate one end of the motor winding extending out of the core body.

[0010] Optionally, a slot wall of the winding slot close to the central axis of the core body is provided with a notch, and the sealing section of the second insulating portion is in contact with the inner side wall of the core body and covers the notch.

[0011] Optionally, the insulating member further comprises a limiting portion sleeved outside the plurality of first insulating portions, one end of the sealing cover close to the core body is connected to the limiting portion, and the limiting portion abuts against an end surface of the core body facing the sealing cover.

[0012] Optionally, an anti-slip structure is provided at a connection between the sealing cover and the limiting portion, and the anti-slip structure is used to prevent the sealing cover from being detached from the insulating member along the axial direction of the core body.

[0013] Optionally, the core body is further provided with a cooling oil channel extending axially therethrough, the cooling oil channel and the winding slot are alternately arranged along the circumference of the core body, or the cooling oil channel is located on a side of the winding slot away from the center axis of the core body.

[0014] Optionally, the motor further comprises a seal, and one end of the sealing cover away from the core body is sealed and connected to the extended section of the second insulating portion through the seal;

[0015] And / or, a positioning structure is provided at a connection between the sealing cover and the extending section of the second insulating portion, and the positioning structure is used to position and install the sealing cover.

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

[0017] Optionally, when the positioning structure is provided at the connection between the sealing cover and the extending section of the second insulating part, the positioning structure includes a positioning protrusion and a positioning surface, one of the sealing cover and the extending section is provided with the positioning protrusion, the other of the sealing cover and the extending section is provided with the positioning surface, and the positioning protrusion is abutted against the positioning surface.

[0018] In a second aspect, the present invention provides a vehicle comprising the motor as described above.

[0019] The beneficial effect of the motor of the present invention is that: an insulating member of an integral structure can be provided, and a receiving groove can be provided on the first insulating part of the insulating member to provide an installation position for, for example, a flat wire winding, and the first insulating part can be inserted into the corresponding winding groove on the core body to protect the motor winding with the first insulating part of the insulating member instead of the traditional insulating paper. At the same time, a sealing cover with an oil inlet is provided, and the sealing section of the second insulating part of the insulating member is inserted into the core body, and the extended section of the second insulating part extending out of the core body and the sealing cover provided at the end of the motor winding are surrounded to form a cooling chamber, and the cooling chamber is connected with the oil inlet and the receiving groove. In this way, when the motor winding is oil-cooled, 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 oil-soaked cooling of the end winding, and thus the cooling effect of the end winding can be improved to a large extent. Moreover, since the sealing section and the extension section of the second insulating part are an integrated structure, the cooling oil flows from the cooling chamber into the receiving groove, and will not leak into the air gap during the flow in the receiving groove, thereby preventing the cooling oil from entering the air gap, thereby reducing the motor oil stirring loss and improving the motor efficiency. In addition, setting the insulating part as an integrated structure is not only convenient for batch manufacturing using processes such as injection molding, but also convenient for the overall assembly of the insulating part. Compared with the method of assembling insulating paper one by one in the prior art, it can simplify the assembly process and improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the exploded structure of the motor in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of the structure of a motor in an embodiment of the present invention;

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

[0023] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0024] Figure 5 A schematic diagram of the structure of the core body in an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of an insulating member in an embodiment of the present invention;

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

[0027] Figure 8for Figure 7 A partial enlarged view of point B in the middle;

[0028] Fig. 9 Schematic cross-sectional view of the sealing cover in the embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Core body; 11. Winding slot; 112. Notch; 12. Cooling oil channel; 2. Sealing cover; 21. Oil inlet; 22. Annular sealing groove; 23. First wall; 24. Second wall; 25. Annular boss; 3. Insulating member; 31. First insulating portion; 311. Accommodating groove; 32. Second insulating portion; 33. Limiting portion; 331. Limiting section; 332. Connecting section; 4. Sealing member; 5. Cooling chamber; 6. Anti-slip structure; 61. Inner serration structure; 62. Outer serration structure; 7. Positioning structure; 71. Positioning protrusion; 72. Positioning surface; 100. Motor winding. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0032] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0033] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated 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, oil cooling has better cooling effect than water cooling and air cooling, so it is widely used. However, with the development of technology, the power density requirements of motors are getting higher and higher, which puts higher requirements on the cooling of motors. Traditional oil-cooled motors generally use oil pipes or oil spray rings for radial spraying, that is, the cooling oil is sprayed along the radial direction of the stator core to the end of the stator winding, so as to achieve cooling of the end of the motor winding. However, the radial spray cooling method makes it easy for the cooling oil to enter the air gap (that is, the gap between the rotor core and the stator core), resulting in greater oil stirring loss in the motor and reduced motor efficiency. Moreover, since the spray holes are arranged at intervals, it cannot be guaranteed that the end windings at each winding slot can be cooled evenly, so the cooling effect is general.

[0035] In view of the problems existing in the above-mentioned related technologies, the present invention provides a motor and a vehicle.

[0036] Combination Figures 1 to 3 As shown, an embodiment of the present invention provides a motor, comprising:

[0037] The core body 1 is provided with winding slots 11 extending through the core body 1 in the axial direction.

[0038] The sealing cover 2 is provided with an oil inlet 21 and is located at one end of the core body 1 along the axial direction thereof;

[0039] The insulating part 3 includes a first insulating part 31 and a second insulating part 32 which are integrally connected. The second insulating part 32 is a tubular structure, which includes a sealing section inserted in the core body 1 and an extended section extending outside the core body 1. The first insulating part 31 is arranged at intervals along the circumference of the second insulating part 32 and is arranged corresponding to the winding slot 11. The first insulating part 31 is used to accommodate the accommodating slot 311 of the motor winding 100, and is at least partially inserted in the corresponding winding slot 11, and the first insulating part 31 is provided with; the extended section of the second insulating part 32 and the sealing cover 2 form a cooling chamber 5, the cooling chamber 5 is connected to the oil inlet 21, and is used to accommodate one end of the motor winding 100 extending outside the core body 1.

[0040] Specifically, the core body 1 is usually a stator core, and is usually provided with a plurality of 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 plurality of winding slots 11 are usually arranged along the axial direction of the core body 1, and are arranged at intervals along the circumference of the core body 1. The insulating member 3 is an integrated structure, and is usually made of insulating materials such as plastic. The insulating member 3 mainly includes a first insulating portion 31 and a second insulating portion 32 extending along the axial direction of the core body 1. The second insulating portion 32 is usually a cylindrical structure, and the cavity surrounded by it is used to assemble the motor rotor. Since the 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. In addition, the second insulating portion 32 includes a sealing section inserted in the core body 1 and an extending section extending outside the core body 1, and the first insulating portion 31 is arranged at intervals along the circumference of the second insulating portion 32. The first insulating portion 31 is usually arranged in one-to-one correspondence with the winding slot 11, and the size and shape of the first insulating portion 31 are usually matched with the winding slot 11. The extension length of the second insulating portion 32 along its axial direction is usually greater than the extension length of the first insulating portion 31, and the extension length of the first insulating portion 31 is usually greater than or equal to the extension length of the winding slot 11. At the same time, each first insulating portion 31 is provided with a receiving slot 311 for accommodating the motor winding 100, and the receiving slot 311 is usually arranged through the extension direction of the first insulating portion 31. During assembly, the insulating member 3 is usually assembled to the core body 1 first, and then a part of the flat wire winding is inserted into the receiving slot 311 of the insulating member 3, and the other part of the flat wire winding is welded to the flat wire winding inserted into the receiving slot 311 outside the core body 1 to complete the assembly of the flat wire winding. The sealing cover 2 is usually an annular structure and is provided with an oil inlet 21. The oil inlet 21 can be set on the end face of the sealing cover 2 away from the end of the core body 1, or on the circumferential outer wall of the sealing cover 2, which is not specifically limited here. The sealing cover 2 is usually set at one end of the core body 1 along its axial direction, and is used to cover the non-welded end of the flat wire winding. The end of the sealing cover 2 close to the core body 1 can be connected to the first insulating part 31 of the insulating member 3, or can be abutted with the core body 1. The end of the sealing cover 2 away from the core body 1 is usually connected to the extended section of the second insulating part 32 of the insulating member 3, and the sealing cover 2 and the extended section of the second insulating part 32 form a cooling chamber 5. The cooling chamber 5 is usually an annular cavity structure, and is connected to the oil inlet 21 on the sealing cover 2 and the receiving groove 311 on the first insulating part 31, and the end of the motor winding 100 extending outside the core body 1 is accommodated in the cooling chamber 5.

[0041] When the end of the motor winding 100 is oil-cooled, 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 achieving oil-immersed cooling of the end winding.

[0042] In this embodiment, an insulating member 3 of 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 core body 1, the first insulating portion 31 of the insulating member 3 can be used to replace the traditional insulating paper to protect the motor winding 100. At the same time, by providing a sealing cover 2 with an oil inlet 21, and inserting the sealing section of the second insulating part 32 of the insulating member 3 into the core body 1, the extending section of the second insulating part 32 extending outside the core body 1 and the sealing cover 2 covering the end of the motor winding 100 are surrounded by a cooling chamber 5, and the cooling chamber 5 is connected with the oil inlet 21 and the receiving groove 311. In this way, when the motor winding 100 is oil-cooled, 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 oil-soaked cooling of the end winding, and thus can greatly improve the cooling effect of the end winding. Moreover, since the sealing section and the extension section of the second insulating part 32 are an integrated structure, the cooling oil flows from the cooling chamber 5 into the receiving groove 311, and will not leak into the air gap during the flow in the receiving groove 311, thereby preventing the cooling oil from entering the air gap, thereby reducing the motor oil stirring loss and improving the motor efficiency. In addition, setting the insulating part 3 as an integrated structure is not only convenient for batch manufacturing using processes such as injection molding, but also convenient for assembling the insulating part 3 as a whole. Compared with the method of assembling insulating paper one by one in the prior art, it can simplify the assembly process and improve the assembly efficiency.

[0043] Furthermore, combined with Figure 1 As shown, the oil inlet 21 of the sealing cover 2 is provided with a pipe joint. In this way, it is convenient to use the pipe joint to connect with the oil pipe and fix the oil pipe on the pipe joint.

[0044] Furthermore, combined with Figure 2 and Fig. 9 As shown, 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 wall of the sealing cover 2, the second wall body 24 constitutes the axial end of the sealing cover 2, and the cooling chamber 5 is surrounded by the first wall body 23, the second wall body 24 and the extended section of the second insulating part 32.

[0045] Optionally, combined Figure 2 and Figure 5 As shown, 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 .

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

[0047] Optionally, combined Figure 6 and Figure 7 As shown, the first insulating portion 31 is disposed on the outer surface of the sealing section of the second insulating portion 32 .

[0048] In this optional embodiment, the first insulating part 31 is arranged on the outer surface of the second insulating part 32, which can be understood as the end surface of the first insulating part 31 at one end close to the central axis of the second insulating part 32 is connected with the outer surface of the second insulating part 32, that is, the end surface of the first insulating part 31 at one end 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, a slot wall on one side of the winding slot 11 close to the central axis of the core body 1 is provided with a notch 112, and the size of the notch 112 matches the size of the connection between the first insulating part 31 and the second insulating part 32. When the insulating member 3 is inserted into the core body 1, the first insulating part 31 is at least partially accommodated in the corresponding winding slot 11, the sealing section of the second insulating part 32 is accommodated in the hollow part of the core body 1, and the connection between the sealing sections of the first insulating part 31 and the second insulating part 32 is accommodated at the notch 112. In this way, by setting the first insulating part 31 on the outer surface of the sealing section of the second insulating part 32, on the one hand, the connection area between the first insulating part 31 and the second insulating part 32 can be increased to ensure the stability of the connection between the two, and facilitate the overall insertion of the insulating part 3 into the core body 1; on the other hand, the insulating part 3 can be suitable for the stator core whose winding slot 11 has a notch 112.

[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, a circular connecting portion, that is, the sealing sections of the first insulating portion 31 and the second insulating portion 32 are spaced apart in the circumferential direction of the second insulating portion 32. At this time, the slot wall on one side of the winding slot 11 close to the central axis of the core body 1 may be provided with a notch 112, or may not be provided with a notch 112. In this way, the insulating member 3 can be applied not only to the stator core with the winding slot 11 having the notch 112, but also to the stator core with the closed winding slot 11.

[0050] Optionally, combined Figure 4 , Figure 6 and Figure 7 As shown, the insulating member 3 also includes 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 .

[0051] In this optional embodiment, the limiting portion 33 is generally an annular structure, and is sleeved outside the plurality of first insulating portions 31, and the limiting portion 33 and the first insulating portion 31 are generally connected in an integral manner. In addition, the limiting portion 33 may be located inside the cooling chamber 5, or may be located outside the cooling chamber 5, which is not specifically limited here. When the limiting portion 33 is located inside the cooling chamber 5, the sealing cover 2 is connected to the outer 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 core body 1. In the process of inserting the insulating member 3 into the core body 1, when the limiting portion 33 abuts against the end face of the core body 1 facing the sealing cover 2, it indicates that the insulating member 3 is installed in place, so as to ensure that the insulating member 3 is installed accurately.

[0052] Optionally, combined Figure 4 As shown, the limiting portion 33 is located in the cooling chamber 5. At this time, the sealing cover 2 is connected to the outer wall of the limiting portion 33. In this way, the axial dimension of the insulating member 3 can be shortened, thereby reducing the axial dimension of the motor, which is convenient for the motor to be arranged.

[0053] Optionally, combined Figure 4 As shown, 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 being detached from the insulating member 3 along the axial direction of the core body 1. In this way, the firmness of the connection between the sealing cover 2 and the limiting portion 33 can be improved, and the sealing cover 2 can be prevented from falling off during the operation of the motor and affecting the normal operation of the motor.

[0054] In one example, combining Figure 4As shown, the anti-slip structure 6 can be composed of an inner sawtooth structure 61 arranged on the sealing cover 2 and an outer sawtooth structure 62 arranged on the limiting portion 33, and the inclination directions of the inner sawtooth structure 61 and the outer sawtooth structure 62 are opposite. At this time, the sealing cover 2 and the limiting portion 33 are prevented from slipping by the inner and outer sawtooth structures. In another example, the anti-slip structure 6 can be composed of an anti-slip protrusion and an anti-slip groove that are snap-fitted. 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-slip protrusion and the anti-slip groove form a snap-fit, thereby playing an anti-slip effect. In other examples, the anti-slip 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 threadedly connected, thereby playing an anti-slip effect. In addition, the anti-slip structure 6 can also be a structure such as glue or hot melt adhesive. At this time, the sealing cover 2 and the limiting portion 33 are connected by bonding.

[0055] Furthermore, combined with Figure 4 and Figure 8 As shown, the limiting portion 33 includes a limiting section 331 and a connecting section 332 that are interconnected, the connecting section 332 is located on the radially outer side of the limiting section 331 (that is, the limiting section 331 is on the side away from the central axis of the second insulating portion 32), the anti-slip structure 6 is arranged 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, and the second end of the connecting section 332 is located on the side away from the second end of the limiting section 331 from the core body 1, wherein 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, 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 core body 1.

[0056] In this embodiment, the limiting section 331 and the connecting section 332 are coaxially arranged annular structures, and the limiting section 331 and the connecting section 332 are usually arranged vertically. In addition, the first end of the connecting section 332 is flush with the first end of the limiting section 331, and 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 core body 1, that is, the second end of the connecting section 332 exceeds the second end of the limiting section 331. In other words, the axial dimension of the limiting section 331 along the second insulating portion 32 is smaller than the axial dimension of the connecting section 332 along 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 an anti-slip structure 6 such as an internal and external serrated structure or an internal and external threaded structure at the connection between the high sealing cover 2 and the limiting portion 33.

[0057] Optionally, combined Figure 5As shown, the core body 1 is also provided with a cooling oil channel 12 extending through the core body 1 along its axial direction. The cooling oil channel 12 and the winding slots 11 are alternately arranged along the circumference of the core body 1, or the cooling oil channel 12 is located on the side of the winding slots 11 away from the central axis of the core body 1.

[0058] In this optional embodiment, the cooling oil channel 12 can be arranged on one side of the winding slot 11 along the circumference of the core body 1. In this case, the cooling oil channel 12 and the winding slot 11 are arranged alternately along the circumference of the core body 1; the cooling oil channel 12 can also be arranged on the side of the winding slot 11 away from the central axis of the core body 1, that is, on the radial outer side of the winding slot 11. In this way, by arranging the cooling oil channel 12, the cooling oil in the cooling chamber 5 at one end of the core body 1 can flow to the other end of the core body 1 through the cooling oil channel 12, and spray cooling is performed on the end winding at the other end of the core body 1 when flowing out of the cooling oil channel 12, so that the spray structure such as the spray ring arranged at the other end of the core body 1 can be eliminated while ensuring the cooling effect, thereby reducing the number of parts, simplifying the cooling structure of the motor, and reducing the production cost.

[0059] If the cooling oil channel 12 is arranged radially outside the winding slot 11, the oil outlet end of the cooling oil channel 12 will be located in the tangential direction of the end winding, resulting in the spraying direction of the cooling oil flowing out of the oil outlet end of the cooling oil channel 12 also being located in the tangential direction of the end winding, which easily causes most of the cooling oil to flow away from the outer surface of the end winding, resulting in poor cooling effect. Therefore, in practical applications, it is usually preferred that the cooling oil channel 12 and the winding slot 11 are alternately arranged along the circumference of the core body 1, so that the oil outlet end of the cooling oil channel 12 is located inside the end winding, so that the cooling oil flowing out of the oil outlet end of the cooling oil channel 12 can be sprayed radially, thereby ensuring that the cooling oil can be sprayed directly on the welding end of the winding, and the cooling effect is better.

[0060] Optionally, combined Figure 2 and Figure 4 As shown, the motor further includes a seal 4, and one end of the sealing cover 2 away from the core body 1 is sealed and connected to the extended section of the second insulating portion 32 through the seal 4. In this way, the sealing of the cooling chamber 5 can be improved by improving the sealing of the connection between the sealing cover 2 and the second insulating portion 32, thereby preventing the cooling oil in the cooling chamber 5 from leaking from the connection between the sealing cover 2 and the second insulating portion 32 into the air gap, so as to further prevent the cooling oil from entering the air gap and reduce the motor loss.

[0061] Furthermore, combined with Figure 4 As shown, the sealing member 4 is sleeved on the extended section of the second insulating portion 32 , or the sealing member 4 abuts against the axial end surface of the extended section of the second insulating portion 32 to seal.

[0062] In this embodiment, the seal 4 is generally a sealing ring structure, which can be sleeved on the extended section of the second insulating portion 32 to form a radial seal, or can be arranged between the sealing cover 2 and the end surface of the second insulating portion 32 along the axial direction to form an end surface seal. In practical applications, the design can be selected according to needs, and no specific limitation is made here.

[0063] Furthermore, combined with Figure 4 As shown, an annular boss 25 is provided at one end of the sealing cover 2 away from the core body 1, and an annular sealing groove 22 is provided on the inner side of the annular boss 25, and the sealing member 4 is accommodated in the annular sealing groove 22. The annular boss 25 is usually arranged on the second wall 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 providing the annular boss 25, and by providing the annular sealing groove 22 on the inner side of the annular boss 25 to accommodate the sealing member 4, not only can the space occupied by the sealing member 4 be reduced, but the groove wall of the annular sealing groove 22 can also be used to limit and position the sealing member 4, thereby improving the convenience of assembly.

[0064] Optionally, combined Figure 4 As shown, a positioning structure 7 is provided at the connection between the sealing cover 2 and the extended section of the second insulating portion 32 , and the positioning structure 7 is used to position and install the sealing cover 2 .

[0065] In this optional embodiment, a seal 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 portion 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 core body 1. For example, Figure 4 An example is given in which the seal 4 is located on the side of the positioning structure 7 close to the core body 1. In addition, the positioning structure 7 can be composed of the positioning protrusion 71 and the positioning surface 72 described later, or can be composed of the positioning groove and the positioning protrusion, which is not specifically limited 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, combined with Figure 4 and Fig. 9 As shown, the positioning structure 7 includes a positioning protrusion 71 and a positioning surface 72. One of the extended sections of the sealing cover 2 and the second insulating part 32 is provided with a positioning protrusion 71, and the other of the extended sections of the sealing cover 2 and the second insulating part 32 is provided with a positioning surface 72, and the positioning protrusion 71 is abutted against the positioning surface 72.

[0067] In this embodiment, for the convenience of description, the positioning protrusion 71 is arranged on the sealing cover 2 and the positioning surface 72 is arranged on the second insulating part 32. The positioning protrusion 71 is usually arranged 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 part 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 part 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 means 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 invention includes the motor as described above.

[0069] The beneficial effects of the vehicle of this embodiment relative to the prior art are the same as those of the above-mentioned motor, which will not be described again here.

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

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 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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