CN220401503U - Stator components, motors and vehicles - Google Patents

Abstract

The utility model discloses a stator assembly, a motor and a vehicle. The stator assembly includes: a plurality of silicon steel sheets. Iron core slots are provided inside the plurality of silicon steel sheets, and oil grooves are respectively provided on the plurality of silicon steel sheets. A cooling channel is defined between the oil grooves of the silicon steel sheets, and the cooling channel is connected with the iron core groove. A cooling channel is defined by multiple silicon steel sheet oil grooves, and the cooling oil can enter the inside of the iron core slot through the cooling channel. Since the coil windings are located inside the iron core slot, the cooling oil can cool the coil windings in the iron core slot, and The cooling oil can flow along the axial direction of the stator assembly, so that the cooling oil can cool the ends of the coil windings, thereby improving the overall cooling effect of the stator assembly.

Description

Stator components, motors and vehicles

Technical field

The utility model relates to the field of vehicle technology, and in particular to a stator assembly, a motor and a vehicle.

Background technique

In the related art, the cooling method of coil windings is usually oil cooling. The motor housing is provided with an oil inlet. The cooling oil enters the oil circuit through the oil inlet of the housing. The cooling oil can be sprayed to the coil windings through the oil circuit. The end of the coil winding is cooled. However, this cooling method usually can only cool the ends of the coil windings, and it is difficult to directly cool the coil windings in the core slots, and the cooling effect on the entire stator assembly is poor.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the present utility model proposes a stator assembly, which can not only cool the ends of the coil windings, but also cool the coil windings inside the core slots.

The utility model further proposes a motor.

The utility model further provides a vehicle.

The stator assembly according to the present invention includes: a plurality of silicon steel sheets. Each of the plurality of silicon steel sheets is provided with an iron core groove, and the plurality of silicon steel sheets are respectively provided with an oil groove. One of the oil grooves of the plurality of silicon steel sheets is The space defines a cooling channel, and the cooling channel is connected with the core slot.

According to the stator assembly of the present invention, a cooling channel is defined by a plurality of silicon steel sheet oil grooves. The cooling oil can enter the inside of the iron core slot through the cooling channel. Since the coil windings are located inside the iron core slot, the cooling oil can enter the iron core slot. The coil windings are cooled, and the cooling oil can flow along the axial direction of the stator assembly, so that the cooling oil can cool the ends of the coil windings, thereby improving the overall cooling effect of the stator assembly.

In some examples of the present invention, each of the plurality of silicon steel sheets includes: a yoke portion and a tooth portion, the yoke portion is located outside the tooth portion, the oil groove is provided on the yoke portion, and the tooth portion There are a plurality of teeth, and the iron core slot is defined between two adjacent tooth portions.

In some examples of the present invention, the silicon steel sheet includes: a first silicon steel sheet, a second silicon steel sheet, a third silicon steel sheet and a fourth silicon steel sheet, and a first oil tank is provided on the first silicon steel sheet, and the The second silicon steel sheet is provided with a second oil groove, the third silicon steel sheet is provided with a third oil groove, the first oil groove, the second oil groove and the third oil groove are connected, and the third oil groove is connected with the third oil groove. The iron core slots are connected.

In some examples of the present invention, the first oil groove is located outside the yoke portion of the first silicon steel sheet, and the first oil groove is in an arc shape.

In some examples of the present invention, there are a plurality of second oil grooves, and the plurality of second oil grooves are in a rectangular shape, and the plurality of second oil grooves are respectively arranged opposite to the first oil groove.

In some examples of the present invention, the third oil groove is connected to the iron core groove on the third silicon steel sheet, and the third oil groove is arranged opposite to the second oil groove.

In some examples of the present invention, the stator assembly further includes: a coil winding, the coil winding includes: a first copper wire and a second copper wire, the first copper wire and the second copper wire are respectively attached to Two adjacent first copper wires and second copper wires are arranged at staggered intervals on two opposite inner walls of the iron core slot.

In some examples of the present invention, the stator assembly further includes: a slot wedge, which is disposed at an opening of the iron core slot so as to form a closed space in the iron core slot.

The motor according to the present invention includes: a casing, the casing is provided with an oil inlet; and the above-mentioned stator assembly, the cooling channel is connected with the oil inlet.

The vehicle according to the present invention includes: the above-mentioned motor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of the drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

Figure 1 is an oil circuit diagram of a motor according to an embodiment of the present utility model;

Figure 2 is a cross-sectional view of a stator assembly according to another embodiment of the present invention;

Figure 3 is an enlarged view of point A in Figure 2;

Figure 4 is a schematic structural diagram of the first silicon steel sheet;

Figure 5 is a schematic structural diagram of the second silicon steel sheet;

Figure 6 is a schematic structural diagram of the third silicon steel sheet;

Figure 7 is a schematic structural diagram of the fourth silicon steel sheet.

Reference signs:

1. Stator components

10. Silicon steel sheet; 11. The first silicon steel sheet; 111. The first oil tank; 12. The second silicon steel sheet; 121. The second oil tank; 13. The third silicon steel sheet; 131. The third oil tank; 14. The fourth silicon steel sheet ; 15. Yoke; 16. Teeth; 20. Core slot; 30. Oil tank; 40. Coil winding; 41. First copper wire; 42. Second copper wire; 50. Slot wedge; 60. Shell; 61. Oil inlet; 2. Motor.

Detailed ways

The embodiments of the present invention are described in detail below. The embodiments described with reference to the drawings are exemplary. The embodiments of the present invention are described in detail below.

The following describes a stator assembly 1 according to an embodiment of the present invention with reference to Figures 1-7.

As shown in FIG. 1 , a stator assembly 1 according to an embodiment of the present invention includes: a plurality of silicon steel sheets 10 . It can be understood that the stator assembly 1 is generally made of multiple thin silicon steel sheets 10 stacked together, and the material of the silicon steel sheets 10 is silicon steel. Silicon steel is a magnetic material with strong magnetic permeability, which can produce greater magnetic induction. Strength enables the stator assembly 1 to work better.

As shown in Figures 1 and 3, multiple silicon steel sheets 10 are provided with core slots 20 inside, and the core slots 20 are mainly used to place coil windings 40. Oil grooves 30 are respectively provided on the plurality of silicon steel sheets 10, and cooling channels are defined between the oil grooves 30 of the plurality of silicon steel sheets 10. In this way, cooling oil can flow in the cooling channels through the plurality of oil grooves 30, and because the cooling channels and the iron core The slots 20 are connected, so that the cooling oil can flow into the core slot 20 from the cooling channel, so that the coil winding 40 in the core slot 20 can be cooled. At the same time, the cooling oil can flow along the axis of the stator assembly 1 through the cooling channel. It flows in a direction and finally flows out from both ends of the stator assembly 1, so that the ends of the coil windings 40 can be cooled.

Therefore, the cooling channels are defined by the oil grooves 30 of the plurality of silicon steel sheets 10, and the cooling oil can enter the inside of the core groove 20 through the cooling channels. Since the coil windings 40 are located inside the core groove 20, the cooling oil can affect the core groove 20. The coil windings 40 inside are cooled, and the cooling oil can flow along the axial direction of the stator assembly 1, so that the cooling oil can cool the ends of the coil windings 40, thereby improving the overall cooling effect of the stator assembly 1.

In addition, as shown in Figures 2 to 7, each of the plurality of silicon steel sheets 10 includes: a yoke 15 and a tooth 16. The yoke 15 is located outside the tooth 16. The oil groove 30 is provided on the yoke 15. The tooth 16 has multiple There is a core slot 20 defined between two adjacent tooth portions 16 . The yoke 15 is arranged on the outside of the gear, and the oil groove 30 is arranged on the yoke 15. This arrangement of the oil groove 30 is more reasonable and can make the position of the oil groove 30 closer to the outside, thereby facilitating the connection between the oil groove 30 and the casing 60 of the motor 2. The oil inlet 61 cooperates with the oil inlet 61 to facilitate the introduction of cooling oil into the oil tank 30 from the oil inlet 61. In addition, there are multiple tooth portions 16, and an iron core groove 20 is defined between two adjacent tooth portions 16. In this way, there are also multiple iron core grooves 20, which facilitates the cooperation between the iron core groove 20 and the outer oil groove 30. The cooling oil in the cooling channel can better enter the iron core groove 20 . It should be noted that the cooling oil in the cooling channel will gradually move inward, so that it can enter the iron core groove 20 .

In addition, as shown in FIGS. 2 to 7 , the silicon steel sheet 10 includes: a first silicon steel sheet 11 , a second silicon steel sheet 12 , a third silicon steel sheet 13 and a fourth silicon steel sheet 14 . The first silicon steel sheet 11 is provided with a third silicon steel sheet 11 . An oil tank 111, a second oil tank 121 is provided on the second silicon steel sheet 12, a third oil tank 131 is provided on the third silicon steel sheet 13, the first oil tank 111, the second oil tank 121 and the third oil tank 131 are connected, and the third oil tank 131 is connected with the third oil tank 131. The oil groove 131 is connected with the iron core groove 20 .

That is to say, the silicon steel sheet 10 can be divided into four different types, namely the first silicon steel sheet 11, the second silicon steel sheet 12, the third silicon steel sheet 13 and the fourth silicon steel sheet 14. The first oil tank 111, the second oil tank 121 and the third oil tank 131 can both play a role in guiding the flow, and the cooling oil can flow inside the first oil tank 111, the second oil tank 121 and the third oil tank 131 respectively, and because the first oil tank 111, the second oil tank 121 and the third oil tank 131 The three oil grooves 131 are connected to each other, and the third oil groove 131 is in turn connected to the iron core tank 20. In this way, after the cooling oil enters through the oil inlet 61, it can enter through the guidance of the first oil groove 111, the second oil groove 121 and the third oil groove 131. to the inside of the iron core slot 20, so that the coil windings 40 in the iron core slot 20 can be cooled.

Specifically, as shown in FIG. 4 , the first oil groove 111 is located outside the yoke 15 of the first silicon steel sheet 11 , and the first oil groove 111 is in an arc shape. The first oil groove 111 is arranged outside the yoke 15 of the first silicon steel sheet 11, so that the first oil groove 111 is arranged more reasonably, and the first oil groove 111 can be closer to the oil inlet 61, which facilitates the connection between the first oil groove 111 and the oil inlet 61. The oil inlet 61 matches. Moreover, the first oil tank 111 is in an arc shape, which means that the first oil tank 111 has a relatively large accommodation space, which allows more cooling oil to enter the first oil tank 111, increasing the amount of oil inflow and improving the cooling effect. The first oil groove 111 may occupy one-quarter of the space of the yoke 15 of the first silicon steel sheet 11 in the circumferential direction, and occupy one-half of the space of the yoke 15 of the first silicon steel sheet 11 in the diameter direction.

Further, as shown in FIG. 5 , there are a plurality of second oil grooves 121 , and the plurality of second oil grooves 121 are in a rectangular shape. The plurality of second oil grooves 121 are respectively arranged opposite to the first oil groove 111 . A plurality of second oil grooves 121 are provided, and the plurality of second oil grooves 121 are respectively arranged opposite to the first oil groove 111. This allows the plurality of second oil grooves 121 to be directly connected with the first oil groove 111, and the cooling oil inside the first oil groove 111 It can enter multiple second oil grooves 121 respectively to speed up the circulation speed of the cooling oil, thereby improving the overall cooling effect of the stator assembly 1 . The plurality of second oil grooves 121 are in a rectangular shape, which can better match the shape of the core groove 20 and facilitate the cooling liquid to flow into the core groove 20 from the cooling channel. Of course, the second oil grooves 121 can also be arc-shaped. The shape corresponds to the first oil groove 111. It should be noted that the second oil groove 121 is provided on the yoke 15 of the second silicon steel sheet 12. The size and position of the second oil groove 121 in the circumferential direction are consistent with the first oil groove 111, and the size of the second oil groove 121 in the radial direction is Occupying half of the space of the yoke 15 of the second silicon steel sheet 12, the position partially overlaps with the first oil groove 111. When the cooling oil enters the second oil groove 121 from the first oil groove 111, it will move inward.

In addition, as shown in FIG. 6 , the third oil groove 131 is connected to the core groove 20 on the third silicon steel sheet 13 , and the third oil groove 131 is opposite to the second oil groove 121 . The third oil tank 131 is connected to the iron core tank 20, so that after the cooling oil flows into the third oil tank 131 through the first oil tank 111 and the second oil tank 121, it can directly flow into the iron core tank 20 through the third oil tank 131, so that the cooling oil can be The coil winding 40 inside the core slot 20 is cooled. Moreover, the third oil tank 131 and the second oil tank 121 are arranged oppositely, that is, the third oil tank 131 and the second oil tank 121 are directly connected. In this way, the cooling oil flowing through the second oil tank 121 can directly enter the third oil tank 131, thereby facilitating Flow of cooling oil. It should be noted that the third oil groove 131 can also be rectangular, so that the third oil groove 131 can better adapt to the second oil groove 121 and the core groove 20, so that the cooling oil can enter the core groove 20 from the cooling channel. .

In addition, the third oil groove 131 is provided on the yoke 15 of the third silicon steel sheet 13. The size and position of the third oil groove 131 in the circumferential direction of the third silicon steel sheet 13 are consistent with the first oil groove 111 and the second oil groove 121. The size of 131 in the radial direction of the third silicon steel sheet 13 occupies one-third of the space of the yoke 15 of the third silicon steel sheet 13, and its position partially overlaps with that of the second oil groove 121. In this way, after the cooling oil flows into the first oil tank 111 through the oil inlet 61, it can advance inward layer by layer through the second oil tank 121 and the third oil tank 131, and be introduced into the inside of the iron core tank 20 to realize the control of the inside of the iron core tank 20. Cooling of the coil winding 40.

In addition, as shown in Figures 2 and 3, the stator assembly 1 also includes: a coil winding 40. The coil winding 40 includes: a first copper wire 41 and a second copper wire 42. The first copper wire 41 and the second copper wire 42 are respectively They are attached to two opposite inner walls of the iron core slot 20 , and are arranged at staggered intervals between two adjacent first copper wires 41 and second copper wires 42 . Specifically, the first copper wires 41 and the second copper wires 42 are arranged staggered left and right in the radial direction, so that when the cooling oil flows inside the core groove 20 along the axial direction of the stator assembly 1, the first copper wires can be enlarged. The contact area between the cooling oil 41 and the second copper wire 42 can increase the cooling speed of the first copper wire 41 and the second copper wire 42 by the cooling oil, thereby increasing the cooling speed of the coil winding 40 by the cooling oil. The coil winding 40 can be a rectangular flat copper wire, and the core slot 20 can have a non-parallel structure.

Further, as shown in FIGS. 2 and 3 , the stator assembly 1 further includes: a slot wedge 50 , which is disposed at the opening of the core slot 20 so as to form a closed space in the core slot 20 . Among them, the slot wedge 50 mainly plays a sealing role. The slot wedge 50 is arranged at the opening of the core slot 20 so that the slot wedge 50 can seal the opening of the core slot 20 so that the inside of the core slot 20 can be sealed. A closed space is formed to ensure that the cooling oil does not leak out. In this way, the cooling oil can flow along the axial direction of the stator core inside the core slot 20, and finally flows to both sides of the stator assembly 1, to the ends of the coil winding 40. Cool down the whole part.

As shown in Figure 1, the motor 2 according to the present invention includes: a housing 60 and the stator assembly 1 described in the above embodiments. The housing 60 is provided with an oil inlet 61, and the cooling channel is connected with the oil inlet 61. The casing 60 mainly plays an installation role. The casing 60 and the stator assembly 1 can be installed in an interference fit manner. The casing 60 is provided with an oil inlet 61, and the oil inlet 61 is connected to the cooling channel. , in this way, the external cooling oil can enter the cooling channel through the oil inlet 61, and then enter the core slot 20 through the cooling channel, thereby realizing the cooling of the coil winding 40 and the end of the coil winding 40 inside the core slot 20. cool down.

The vehicle according to the present invention includes: the motor 2 described in the above embodiment.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" ", "radial direction", "circumferential direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply what is meant. Devices or components must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations of the invention.

In the description of the present invention, "first feature" and "second feature" may include one or more of these features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in direct contact with each other. Additional characteristic contacts between them. In the description of the present invention, the terms "above", "above" and "above" the first feature of the second feature include that the first feature is directly above and diagonally above the second feature, or simply means that the first feature has a high level. on the second characteristic.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be incorporated into the description of the implementation. An example or example describes a specific feature, structure, material or characteristic that is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and changes can be made to these embodiments without departing from the principles and purposes of the present invention. Modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A stator assembly, characterized in that it includes: a plurality of silicon steel sheets (10), each of the plurality of silicon steel sheets (10) is provided with core slots (20), and the plurality of silicon steel sheets (10) ) are respectively provided with oil grooves (30), cooling channels are defined between the oil grooves (30) of the plurality of silicon steel sheets (10), and the cooling channels are connected with the iron core grooves (20). 2. The stator assembly according to claim 1, characterized in that each of the plurality of silicon steel sheets (10) includes: a yoke portion (15) and a tooth portion (16), and the yoke portion (15) is located on the said The oil groove (30) is provided on the yoke (15) outside the tooth portion (16). There are multiple tooth portions (16), and a gap is defined between two adjacent tooth portions (16). The iron core slot (20). 3. The stator assembly according to claim 2, characterized in that the silicon steel sheet (10) includes: a first silicon steel sheet (11), a second silicon steel sheet (12), a third silicon steel sheet (13) and The fourth silicon steel sheet (14), the first silicon steel sheet (11) is provided with a first oil groove (111), the second silicon steel sheet (12) is provided with a second oil groove (121), and the third silicon steel sheet (12) is provided with a first oil groove (111). A third oil tank (131) is provided on the silicon steel sheet (13), the first oil tank (111), the second oil tank (121) and the third oil tank (131) are connected, and the third oil tank (131) is connected with the iron core slot (20). 4. The stator assembly according to claim 3, wherein the first oil groove (111) is located outside the yoke (15) of the first silicon steel sheet (11), and the first oil groove (111) is located outside the yoke (15) of the first silicon steel sheet (11). The oil groove (111) is in an arc shape. 5. The stator assembly according to claim 3, characterized in that there are a plurality of second oil grooves (121), and the plurality of second oil grooves (121) are in a rectangular shape, and the plurality of second oil grooves (121) are in a rectangular shape. (121) are respectively arranged opposite to the first oil groove (111). 6. The stator assembly according to claim 3, characterized in that the third oil groove (131) is connected to the iron core groove (20) on the third silicon steel sheet (13), and the third oil groove (131) is connected to the iron core groove (20) on the third silicon steel sheet (13). The third oil tank (131) is arranged opposite to the second oil tank (121). 7. The stator assembly according to claim 1, further comprising: a coil winding (40), the coil winding (40) comprising: a first copper wire (41) and a second copper wire (42), The first copper wire (41) and the second copper wire (42) are respectively attached to two opposite inner walls of the iron core slot (20), and two adjacent first copper wires The wires (41) and the second copper wires (42) are arranged at staggered intervals. 8. The stator assembly according to claim 1, further comprising: a slot wedge (50) disposed at an opening of the core slot (20) so that the A closed space is formed in the iron core slot (20). 9. A motor, characterized in that it includes: Housing (60), the housing (60) is provided with an oil inlet (61); The stator assembly (1) according to any one of claims 1-8, the cooling channel is connected with the oil inlet (61). 10. A vehicle, characterized by comprising: the motor (2) as claimed in claim 9.