CN220586038U - Stator, motor assembly and vehicle - Google Patents

Abstract

The utility model provides a stator, a motor assembly and a vehicle, wherein the stator comprises a main iron core and an end iron core arranged on the main iron core; the main body iron core is provided with a guide groove in the circumferential direction of the stator, and an oil guide channel is formed in the axial direction of the stator; the end iron core is axially provided with an oil injection channel communicated with the oil guide channel, and part of the oil injection channel is positioned at one side of the oil guide channel, which is close to the central shaft of the stator, in the radial direction of the stator, so that cooling oil in the oil guide channel is sprayed towards the central shaft of the stator through the oil injection channel. Through set up the oil spout passageway in the axial of tip iron core to make the part of oil spout passageway be close to the center pin setting of stator, can make the cooling oil that the oil guide passageway got into in the oil spout passageway can the slant flow, make the cooling oil slant winding spray, avoid the cooling to splash when spraying to the winding, thereby can effectually cool off the winding of installing in the stator side.

Description

Stator, motor assembly and vehicle

Technical Field

The application relates to the technical field of vehicle manufacturing, in particular to a stator, a motor assembly and a vehicle.

Background

The motor can produce heat when the work, if can not in time dispel the heat, will take place overheated phenomenon to influence the performance and the life-span of motor. In order to solve this problem, various methods have been proposed to dissipate the heat, one of which is to use an oil cooling technique. The oil cooling motor sprays cooling oil into the motor through an oil way, and takes away heat in the motor by utilizing the flow of the cooling oil, so that the heat dissipation effect is realized. The oil-cooled motor is widely applied to motors under working conditions such as high power, high rotation speed, heavy load and the like, such as the fields of ships, heavy machinery, automobiles and the like, can ensure long-term stable operation of the motor, and improves the durability and the reliability of the motor.

In the existing oil-cooled motor, a vertical oil injection mode is adopted in a stator oil way, cooling oil can be sprayed to a winding vertically to generate a splash phenomenon, and the cooling oil can not be sprayed to the winding end part effectively, so that the temperature of a flat wire winding is overhigh, and the stability and the efficiency of the overall performance of the motor are seriously influenced. Meanwhile, the existing stator oil way design also has the problems of pipeline arrangement, space occupation, cost increase and the like.

In view of this, the present utility model has been made.

Disclosure of Invention

The application provides a stator, motor assembly and vehicle to solve current stator and can't effectively spray the cooling oil to the winding on, influence winding refrigerated technical problem.

The first aspect of the utility model provides a stator, comprising a main body iron core and an end iron core arranged on the main body iron core; the main body iron core is provided with a guide groove in the circumferential direction of the stator, and an oil guide channel is formed in the axial direction of the stator; the end iron core is axially provided with an oil injection channel communicated with the oil guide channel, and part of the oil injection channel is positioned at one side of the oil guide channel, which is close to the central shaft of the stator, in the radial direction of the stator, so that cooling oil in the oil guide channel is sprayed towards the central shaft of the stator through the oil injection channel.

In this aspect, the guide groove provided in the circumferential direction of the stator main body core may allow the cooling oil to flow in the circumferential direction of the stator into the oil guide passage communicating therewith; through set up the oil spout passageway in the axial of tip iron core to make the part of oil spout passageway set up near the center pin of stator, can make the cooling oil that gets into in the oil spout passageway from the oil guide passageway can slant flow, when the export blowout of cooling oil from the oil spout passageway receive its influence can slant stator center pin blowout, make the cooling oil slant winding spray, avoid the cooling to splash when spraying to the winding, thereby can effectually cool off the winding of installing in the stator side.

In a further scheme of the utility model, the end iron core comprises a plurality of end sub-iron cores which are sequentially connected in the axial direction of the stator, the plurality of end sub-iron cores are sequentially provided with oil holes with height differences, and the plurality of oil holes on the plurality of end sub-iron cores are sequentially communicated to form an oil injection channel.

In the scheme, the end iron cores are arranged into a plurality of end sub-iron cores which are connected in sequence, and the oil holes with the height difference are arranged in sequence, so that the cooling oil in the oil injection channel can flow obliquely. The oil through holes on the iron core at one side end are communicated with the oil guide channel to receive the cooling oil flowing in the oil guide channel, and the oil through holes on the iron core at the other side end are used as outlets to spray the cooling oil in the spraying channel. The oil holes with the height difference are sequentially communicated and form an oil injection channel, and under the action of the height difference, the cooling oil in the oil injection channel can only flow obliquely, so that the effect of obliquely spraying can be realized when the cooling oil is sprayed out from the outlet.

In a further scheme of the utility model, the main body iron core comprises a guide section iron core, a first channel section iron core and a second channel section iron core, wherein the two sides of the guide section iron core in the axial direction are respectively connected with the first channel section iron core and the second channel section iron core, and the radius of the guide section iron core is smaller than that of the second channel section iron core and the first channel section iron core, so that the guide section iron core, the second channel section iron cores on the two sides of the guide section iron core and the first channel section iron core are enclosed to form a guide groove.

In this scheme, since the second channel segment core and the first channel segment core are connected to both sides of the guide segment, and the radius of the guide segment core is smaller than that of the second channel segment core and the first channel segment core, the guide segment core, the second channel segment core, and the first channel segment core connected in the axial direction may be enclosed as a guide groove so that the cooling oil may flow in the circumferential direction of the stator.

In a further aspect of the present utility model, oil guide channels are provided in both the first channel segment core and the second channel segment core.

In this scheme, through all setting up the oil channel in first passageway section iron core and second passageway section iron core, can make the cooling oil that flows on the guide section iron core get into in first passageway section iron core and the second passageway section iron core.

In a further scheme of the utility model, the bottom of the guide groove is provided with an oil guide groove which extends along the axial direction and is communicated with the oil guide channel.

In this scheme, through setting up the oil guide groove in the bottom of guide groove to ensure to lead to be full of cooling oil in the oil guide groove all the time, because guide groove axial extension and intercommunication lead the oil channel, consequently lead the oil groove and can ensure to lead the oil channel and be full of cooling oil all the time, and provide pressure so that lead the cooling oil flow in the oil channel.

In a further aspect of the present utility model, the main body core and the end core are provided with bead grooves at corresponding positions, the bead grooves extend in the axial direction of the stator, and the main body core and the end core are connected by the bead grooves.

In this embodiment, axially extending bead grooves are provided in the main body core and the end core, and welding is performed at the positions of the bead grooves to connect the main body core and the end core.

In a further scheme of the utility model, the main iron core is respectively provided with a first end iron core and a second end iron core at two sides of the axial direction of the stator, and oil injection channels are arranged on the first end iron core and the second end iron core, so that cooling oil in the oil guide channel is sprayed towards two sides of the axial direction of the stator through the oil injection channels.

In this scheme, through setting up first end iron core and the second end iron core that has the oil spout passageway respectively in the both sides of main part iron core for the stator can spray the cooling oil in order to realize the cooling towards its axial both sides slant.

The utility model provides a motor assembly which is characterized by comprising a shell, a winding and a stator provided by the second aspect of the utility model, wherein an oil inlet channel is arranged in the shell and is communicated with a guide groove, and part of the oil guide channel which is obliquely arranged ensures that cooling oil sprayed by an oil spraying channel is obliquely sprayed on the winding.

In this scheme, through all setting up winding and stator in the casing, set up the winding in the both sides of stator again for the cooling oil who spouts to one side from the stator both ends can spray to the winding on, and then carries out effective cooling to the winding.

In a further scheme of the utility model, the shell and the guide groove are surrounded to form a guide channel, the stator is arranged in the middle part of the shell, and the windings are arranged at two ends of the shell.

In the scheme, the guide groove and the shell are surrounded to form an oil guide channel, and when cooling oil is continuously injected into the guide groove through the oil inlet channel, pressure is applied to the cooling oil in the guide channel so as to push the cooling oil to enter the spraying channel from the oil guide channel, so that the oblique winding is sprayed.

A third aspect of the utility model provides a vehicle comprising the motor assembly provided in the second aspect of the utility model.

To sum up, the water drain valve and the vehicle provided by the application have the following beneficial effects:

according to the utility model, through the guide groove arranged in the circumferential direction of the stator main body iron core, cooling oil can flow in the circumferential direction of the stator and enter the oil guide channel communicated with the cooling oil; through set up the oil spout passageway in the axial of tip iron core to make the part of oil spout passageway set up near the center pin of stator, can make the cooling oil that gets into in the oil spout passageway from the oil guide passageway can slant flow, when the export blowout of cooling oil from the oil spout passageway receive its influence can slant stator center pin blowout, make the cooling oil slant winding spray, avoid the cooling to splash when spraying to the winding, thereby can effectually cool off the winding of installing in the stator side.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are used in the description of the embodiments or the prior art will be briefly described below. It will be apparent that the figures in the following description are some embodiments of the present application, and that other figures can be obtained from these figures without inventive effort to those skilled in the art.

Fig. 1 is a cross-sectional view of a part of a structure of a stator provided in an embodiment of the present application, in which a lower structure of the stator is cut off in the cross-sectional view for convenience of presentation;

FIG. 2 is a perspective view of a stator provided in an embodiment of the present application; and

fig. 3 is a cross-sectional view of a motor assembly provided in an embodiment of the present application.

The reference numerals are as follows:

10. a stator; 20. a housing; 21. an oil inlet passage; 30. a winding;

100. a guide section iron core; 110. a guide groove; 111. an oil guiding groove;

200. a channel section core; 210. a first channel segment core; 220. a second channel segment core; 230. an oil guide channel;

300. an end iron core; 310. a first end core; 320. a second end core; 330. an oil injection passage;

400. a weld bead groove;

Detailed Description

In the description of the present application, it should be understood that, if there are descriptions of terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientation or positional relationship, it should be understood that the orientation or positional relationship shown based on the drawings is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present application.

Furthermore, the presence of the definitions "first" and "second" merely describe features of interest, and are not to be interpreted as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Features defining "first", "second" may include at least one such defined feature, either explicitly or implicitly. If a description of "a plurality" is present, the generic meaning includes at least two, e.g., two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," and the like, are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; the connection may be mechanical connection, electrical connection, direct connection, indirect connection through an intermediate medium, communication between two elements or interaction relationship between two elements. The specific meaning of the terms in the present application can be understood by those skilled in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., as used herein, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Referring to fig. 1-2, a first aspect of the present utility model provides a stator 10, including a main core and an end core 300 disposed on the main core; the main body core is provided with a guide groove 110 in the circumferential direction of the stator 10, and is provided with an oil guide channel 230 in the axial direction of the stator 10; the end core 300 is axially provided with an oil injection passage 330 communicating with the oil guide passage 230, and a portion of the oil injection passage 330 is located on a side of the oil guide passage 230 near the central axis of the stator 10 in the radial direction of the stator 10, so that the cooling oil in the oil guide passage 230 is sprayed toward the central axis of the stator 10 through the oil injection passage 330.

In this aspect, the guide groove 110 provided in the circumferential direction of the main body core of the stator 10 may allow the cooling oil to flow into the oil guide passage 230 communicating therewith in the circumferential direction of the stator 10; by arranging the oil injection passage 330 in the axial direction of the end iron core 300 and arranging the part of the oil injection passage 330 close to the central axis of the stator 10, the cooling oil entering the oil injection passage 330 from the oil guide passage 230 can flow obliquely, and when the cooling oil is sprayed out from the outlet of the oil injection passage 330, the cooling oil can be sprayed out obliquely to the central axis of the stator 10, so that the cooling oil is sprayed to the winding 30, splashing when the cooling oil is sprayed to the winding 30 is avoided, and the winding 30 arranged on the side surface of the stator 10 can be effectively cooled.

In a further embodiment, the end iron core 300 includes a plurality of end sub-iron cores sequentially connected in the axial direction of the stator 10, and oil holes having a height difference are sequentially provided on the plurality of end sub-iron cores, and the plurality of oil holes on the plurality of end sub-iron cores are sequentially communicated to form the oil injection passage 330.

In this case, the cooling oil in the oil injection passage 330 may be made to flow obliquely by dividing the end core 300 into a plurality of end sub-cores connected in sequence and sequentially providing the oil passing holes having the height difference. The oil through holes on the iron core 300 at one side are communicated with the oil guide channel 230 to receive the cooling oil flowing in the oil guide channel 230, and the oil through holes on the iron core 300 at the other side are used as outlets to spray the cooling oil in the spraying channel. The oil holes with the height difference are sequentially communicated and form the oil injection channel 330, and under the action of the height difference, the cooling oil in the oil injection channel 330 can only flow obliquely, so that the effect of obliquely spraying can be realized when the cooling oil is sprayed out from the outlet. The end sub-cores shown in fig. 2 are three, and may be provided in two, four or more according to actual needs so that the cooling oil flows obliquely in the spray passage.

In a further embodiment, the main body core includes a guide section core 100 and a channel section core 200, the channel section core 200 includes a first channel section core 210 and a second channel section core 220, two sides of the guide section core 100 in the axial direction are respectively connected with the first channel section core 210 and the second channel section core 220, and the radius of the guide section core 100 is smaller than that of the second channel section core 220 and the first channel section core 210, so that the guide section core 100, the second channel section core 220 and the first channel section core 210 on two sides thereof enclose a guide slot 110.

In this case, since the second channel segment core 220 and the first channel segment core 210 are connected to both sides of the guide segment and the radius of the guide segment core 100 is smaller than that of the second channel segment core 220 and the first channel segment core 210, the guide segment core 100, the second channel segment core 220, and the first channel segment core 210 connected in the axial direction may be enclosed as the guide groove 110 so that the cooling oil may flow in the circumferential direction of the stator 10.

Further, the first channel segment core 210 and the second channel segment core 220 may have different structures, or may have the same structure, and when the structures are the same, the manufacturing process of the whole stator 10 is facilitated.

In a further embodiment, an oil guide channel 230 is disposed within each of the first channel segment core 210 and the second channel segment core 220.

In this case, by providing the oil guide passage 230 in each of the first passage segment core 210 and the second passage segment core 220, the cooling oil flowing on the guide segment core 100 can be made to enter the first passage segment core 210 and the second passage segment core 220.

In a further embodiment, the bottom of the guide groove 110 is provided with an oil guiding groove 111, and the oil guiding groove 111 extends in the axial direction and communicates with the oil guiding passage 230.

In this embodiment, by providing the oil guide groove 111 at the bottom of the guide groove 110 to ensure that the oil guide groove 111 is always filled with the cooling oil, since the guide groove 110 extends axially and communicates with the oil guide passage 230, the oil guide groove 111 can substantially ensure that the oil guide passage 230 is always filled with the cooling oil, and provide pressure to cause the cooling oil in the oil guide passage 230 to flow.

In a further embodiment, the main body core and the end core 300 are each provided with a weld bead groove 400 at a corresponding position, the weld bead groove 400 extending in the axial direction of the stator 10, and the main body core and the end core 300 are connected by the weld bead groove 400.

In this embodiment, the body core and the end core 300 are provided with the weld bead grooves 400 extending in the axial direction, and the body core and the end core 300 are connected by welding at the positions of the weld bead grooves 400.

In a further embodiment, the main body core is provided with a first end core 310 and a second end core 320 at both sides of the stator 10 in the axial direction, and oil injection passages 330 are provided on each of the first end core 310 and the second end core 320, so that the cooling oil in the oil guide passage 230 is sprayed toward both sides of the stator 10 in the axial direction through the oil injection passages 330.

In the present utility model, the end sub-core, the guide section core 100, the first channel section core 210 and the second channel section core 220 are each formed by stacking a plurality of core laminations, and in order to connect the core laminations, corresponding bead grooves 400 are provided in each of the end sub-core, the guide section core 100, the first channel section core 210 and the second channel section core 220, and the connecting portion sub-core, the guide section core 100, the first channel section core 210 and the second channel section core 220 are welded in the bead. Since the weld bead penetrates the entire stator 10, part of the cooling oil enters the weld bead groove 400 from the oil guide groove 111, but the cooling oil entering the weld bead groove 400 flows to both sides of the weld bead groove 400, and is sprayed from the weld bead groove 400 vertically onto the winding 30.

In fig. 2, the stator 10 is formed by welding five core laminations, specifically: stacking the first end sub-core laminations into a first end sub-core; the second end sub-core punched pieces are stacked into a second end sub-core; stacking the third end core laminations into a third end core; the channel segment core laminations are stacked into a first channel segment core 210 and a second channel segment core 220; and to the guide section core 100, the laminations are stacked into the guide section core 100. The first, second and third end sub-cores are stacked into an end core 300. By means of the design, the first channel segment iron core 210 and the second channel segment iron core 220 can be stacked by adopting the same iron core punched sheets, and the first end iron core 310 and the second end iron core 320 can be composed of one end iron core, a second end iron core and a third end iron core, so that the production and processing flow of the whole stator 10 is simplified.

In this case, by providing the first end core 310 and the second end core 320 having the oil injection passages 330 at both sides of the main body core, respectively, the stator 10 can spray the cooling oil obliquely toward both sides in the axial direction thereof to achieve cooling.

Referring to fig. 3, a motor assembly according to a second aspect of the present utility model is provided, and the motor assembly includes a housing 20, a winding 30, and a stator 10 according to the second aspect of the present utility model, wherein an oil inlet channel 21 is disposed in the housing 20, the oil inlet channel 21 is connected to the guide groove 110, and a part of the oil guide channel 230 disposed obliquely causes cooling oil sprayed from the oil spraying channel 330 to spray obliquely onto the winding 30.

In this scheme, through setting the winding 30 and the stator 10 in the housing 20, and setting the winding 30 on both sides of the stator 10, the cooling oil sprayed obliquely from both ends of the stator 10 can be sprayed onto the winding 30, and thus the winding 30 is effectively cooled.

In a further embodiment, the housing 20 and the guide groove 110 enclose a guide channel, the stator 10 is disposed in the middle of the housing 20, and the windings 30 are disposed at both ends of the housing 20.

In this embodiment, the guide groove 110 and the housing 20 enclose an oil guide channel 230, and when the oil inlet channel 21 continuously injects cooling oil into the guide groove 110, pressure is applied to the cooling oil in the guide channel to push the cooling oil from the oil guide channel 230 to enter the spraying channel, so as to spray the oblique windings 30. Further, the oil injection passage 330 at the bottom of the stator 10 is inclined upwards, and since the guide passage is fully closed, pressure is applied to the cooling oil in the spray passage when the oil injection passage 21 is continuously injecting oil into the guide passage, so that the cooling oil can be sprayed upwards.

A third aspect of the utility model provides a vehicle comprising the motor assembly provided in the second aspect of the utility model.

Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by those skilled in the art within the scope of the application.

Claims (10)

1. A stator (10) characterized by comprising a main body core and an end core (300) provided on the main body core;

the main body iron core is provided with a guide groove (110) in the circumferential direction of the stator (10), and an oil guide channel (230) is formed in the axial direction of the stator (10);

the end iron core (300) is provided with an oil injection channel (330) communicated with the oil guide channel (230) in the axial direction, and a part of the oil injection channel (330) is positioned on one side of the oil guide channel (230) close to the central axis of the stator (10) in the radial direction of the stator (10), so that cooling oil in the oil guide channel (230) is sprayed towards the central axis direction of the stator (10) through the oil injection channel (330).

2. The stator (10) according to claim 1, wherein the end iron core includes a plurality of end sub-iron cores sequentially connected in an axial direction of the stator (10), a plurality of oil holes having a height difference are sequentially provided on the plurality of end sub-iron cores, and a plurality of the oil holes on the plurality of end sub-iron cores are sequentially communicated to constitute the oil injection passage (330).

3. The stator (10) of claim 1, wherein the main body core includes a guide section core (100), a first channel section core (210) and a second channel Duan Tiexin (220), both sides of the guide section core (100) in an axial direction are respectively connected with the first channel section core (210) and the second channel Duan Tiexin (220), and a radius of the guide section core (100) is smaller than that of the second channel Duan Tiexin (220) and the first channel section core (210), so that the guide section core (100) and the second channel Duan Tiexin (220) and the first channel section core (210) on both sides thereof enclose the guide groove (110).

4. A stator (10) according to claim 3, wherein the oil guide channel (230) is provided in both the first channel segment core (210) and the second channel Duan Tiexin (220).

5. The stator (10) according to claim 1, characterized in that the bottom of the guide groove (110) is provided with an oil guide groove (111), the oil guide groove (111) extending in the axial direction and communicating with the oil guide passage (230).

6. The stator (10) of claim 1, wherein the main body core and the end core are each provided with a weld bead groove (400) at corresponding positions, the weld bead grooves (400) extending in an axial direction of the stator (10), the main body core and the end core being connected by the weld bead grooves (400).

7. The stator (10) according to claim 1, wherein the main body core is provided with a first end core (310) and a second end core (320) on both sides of the stator (10) in the axial direction, and oil injection passages (330) are provided on both the first end core (310) and the second end core (320), so that the cooling oil in the oil guide passage (230) is sprayed toward both sides of the stator (10) in the axial direction through the oil injection passages (330).

8. A motor assembly, characterized by comprising a shell (20), a winding (30) and the stator (10) according to any one of claims 1-7, wherein an oil inlet channel (21) is arranged in the shell (20), the oil inlet channel (21) is communicated with the guide groove (110), and the oil guide channel (230) which is partially obliquely arranged makes cooling oil sprayed by the oil spraying channel (330) obliquely spray on the winding (30).

9. The motor assembly according to claim 8, wherein the housing (20) and the guide groove (110) are enclosed to form a guide passage, the stator (10) is disposed in a middle portion of the housing (20), and the windings (30) are disposed at both ends of the housing (20).

10. A vehicle comprising the electric machine assembly of any one of claims 8-9.