CN217789450U

CN217789450U - Motor casing and motor convenient to cooling

Info

Publication number: CN217789450U
Application number: CN202222700670.7U
Authority: CN
Inventors: 王晓春; 杨祖荣; 程皓; 黄立龙; 戴琼进; 俞斌全
Original assignee: Lishui Fangde Zhiqu Applied Technology Research Institute Co ltd
Current assignee: Lishui Fangde Zhiqu Applied Technology Research Institute Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2022-11-11
Anticipated expiration: 2032-10-14

Abstract

The utility model relates to a motor casing and motor convenient to cooling, a motor, including the front shroud, a housing, the back shroud, a stator, pivot and rotor core, the both ends at the casing are fixed respectively to front shroud and back shroud, the fixed cover of rotor core is established in the pivot, and the both ends of pivot pass through the bearing rotation with front shroud and back shroud respectively and be connected, the stator sets up at shells inner wall, shells inner wall is equipped with the cooling inner circle, and the both ends of cooling inner circle are less than the both ends of casing, set up round axial cooling pipeline along the circumference interval in the cooling inner circle, and a plurality of axial cooling pipelines connect into a holistic circulation pipeline through the intercommunication groove at both ends respectively. The utility model discloses a housing end's step face can make the installation of casing and front and back end cover more accurate, effectively avoids leading to the not good problem of bearing concentricity around casing and front and back end cover cooperation back because of the assembly is not good.

Description

Motor casing and motor convenient to cooling

Technical Field

The utility model relates to a motor technical field for the electric automobile, more specifically say, relate to a motor casing and motor convenient to cooling.

Background

New forms of energy driving motor tends to high torque power output, high rotational speed, compact structure's trend at present, and under the high-speed operating mode of motor, the electromagnetic properties and the life of motor can seriously be influenced to inside thermal rising. The cooling forms of the common motors in the market at present comprise air cooling, water cooling and oil cooling, and the existing oil-cooled motors are mostly applied to the integration of the motors and the transmissions and share lubricating oil of the transmissions for cooling. In the new forms of energy directly drive the motor, because there is not the integration of derailleur, the motor self realizes oil cooling circulation, realizes comparatively difficultly from arranging.

In the prior art, the patent name is an oil-cooled motor shell; chinese utility model patent with publication number CN213585388U discloses a casing with oil duct, can improve whole radiating efficiency, but the inside oil duct that needs processing to meander the gyration of whole wall of this casing, and whole processing step is complicated, and production is inconvenient, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, a first object of the present invention is to provide a motor casing convenient for cooling, which is convenient for processing and can improve cooling efficiency, and a second object of the present invention is to provide a motor.

In order to realize the purpose of the first utility model, the utility model adopts the following technical scheme:

the utility model provides a motor casing convenient to cooling, shells inner wall is equipped with the cooling inner circle, and the both ends of cooling inner circle are less than the both ends of casing, set up round axial cooling pipeline along the circumference interval in the cooling inner circle, and a plurality of axial cooling pipelines connect into a holistic circulation pipeline through the intercommunication groove at both ends respectively.

As a preferable scheme: the circulating pipeline is formed by connecting a plurality of axial cooling pipelines in series through communicating grooves in sequence from head to tail.

As a preferable scheme: the outer wall of the shell is provided with radiating fins extending along the axial direction, and the radiating fins are arranged at intervals along the circumference.

In order to realize the purpose of the second utility model, the utility model adopts the following technical scheme:

the utility model provides a motor, includes front shroud, casing, back shroud, stator, pivot and rotor core, the both ends at the casing are fixed respectively to front shroud and back shroud, the fixed cover of rotor core is established in the pivot, and the both ends of pivot pass through the bearing rotation with front shroud and back shroud respectively and be connected, the stator sets up at shells inner wall, the casing be the arbitrary one of above-mentioned motor casing.

As a preferable scheme: the inboard of front shroud is equipped with the multichannel bulge loop, and multichannel bulge loop and front shroud form a plurality of step faces, make one of them bulge loop and cooling inner circle terminal surface offset after the front shroud is fixed with the casing, be equipped with first sealing washer between casing end face corner and the front shroud, be equipped with the second sealing washer between the inner wall corner of cooling inner circle and the bulge loop.

As a preferable scheme: the inboard of back shroud is equipped with the multichannel bulge loop, and multichannel bulge loop and back shroud form a plurality of step faces, make one of them bulge loop and cooling inner circle terminal surface offset after the back shroud is fixed with the casing, be equipped with first sealing washer between casing end face corner and the back shroud, be equipped with the second sealing washer between the inner wall corner of cooling inner circle and the bulge loop.

As a preferable scheme: and the front cover plate is also provided with a liquid inlet pipe and a liquid outlet pipe which are respectively communicated with the two ends of the circulating pipeline.

As a preferable scheme: and the two ends of the shell are also provided with internal thread hole columns for fixing the front cover plate and the rear cover plate.

As a preferable scheme: and the outer walls of the front cover plate and the rear cover plate are also provided with connecting lugs matched with the internal thread hole columns.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a housing end's step face can make the installation of casing and front and back end cover more accurate, effectively avoids leading to the not good problem of bearing concentricity around behind casing and the cooperation of front and back end cover because of the assembly is not good.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic view of an overall cross-sectional structure of the motor of the present invention;

fig. 2 is a schematic structural view of the motor casing of the present invention cut open to expose the cooling pipeline;

fig. 3 is a schematic structural view of stretch forming of a housing according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view of the housing of embodiment 1 of the present invention, in which the communicating groove and the cooling inner ring are formed;

fig. 5 is a schematic sectional view of the cooling pipe according to embodiment 1 of the present invention after the inner ring of the cooling pipe is cut;

fig. 6 is a schematic structural view of stretch forming of a housing according to embodiment 2 of the present invention;

fig. 7 is a schematic structural view of the housing of embodiment 2 of the present invention, in which the communication groove and the cooling inner ring are formed;

fig. 8 is a schematic sectional view of a cooling pipe inner ring of a casing of embodiment 2 of the present invention.

The reference signs are: 1. a front cover plate; 2. a housing; 3. a rear cover plate; 4. a stator; 5. a rotating shaft; 6. a rotor core; 7. a first seal ring; 8. a second seal ring; 11. a liquid inlet pipe; 12. a liquid outlet pipe; 20. a heat dissipating fin; 21. an axial cooling line; 22. a communicating groove; 23. and cooling the inner ring.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, elements, and/or combinations thereof, unless the context clearly indicates otherwise.

Furthermore, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be further explained with reference to the following embodiments and drawings:

example 1

A motor as shown in fig. 1 and fig. 2, including front shroud 1, casing 2, back shroud 3, stator 4, pivot 5 and rotor core 6, front shroud 1 and back shroud 3 are fixed respectively at the both ends of casing 2, 6 fixed cover of rotor core are established on pivot 5, and the both ends of pivot 5 pass through the bearing rotation with front shroud 1 and back shroud 3 respectively and be connected, stator 4 sets up at shells inner wall.

As shown in fig. 3 to 5, a cooling inner ring 23 is disposed on the inner wall of the casing 2, two ends of the cooling inner ring 23 are lower than two ends of the casing, a circle of axial cooling pipelines 21 are circumferentially disposed at intervals in the cooling inner ring 23, and the plurality of axial cooling pipelines 21 are connected into an integral circulation pipeline through communication grooves 22 at two ends. And the front cover plate 1 is also provided with a liquid inlet pipe 11 and a liquid outlet pipe 12 which are respectively communicated with two ends of the circulating pipeline. The circulating pipeline is formed by sequentially connecting a plurality of axial cooling pipelines 21 in series through communicating grooves 22.

In other embodiments, the communicating groove 22 at the liquid inlet pipe may communicate one end of the N axial cooling pipelines 21, N is greater than 2, and the other end of the N +1 axial cooling pipeline 21 is also communicated with the communicating groove 22, so that the cooling oil or the cooling liquid can smoothly flow to the next axial cooling pipeline 21, and the liquid inlet speed can be increased by simultaneously feeding the liquid through a plurality of pipelines.

When the shell of the utility model is produced, a first step is to form a stretching shell by a stretching forming process, as shown in figure 3; and the second step is to process the end parts of the axial cooling pipelines to form a spigot step and communicate the corresponding axial cooling pipelines through processing communication grooves, as shown in fig. 4 and 5. Besides the integrated molding, the shell and the cooling inner ring can be arranged in a split mode.

The utility model discloses can realize water-cooling or the cold chamber of oil stretch forming together, need not use the technique of friction welding such complicacy. The utility model discloses only need the casing to satisfy two terminal surface characteristics unanimously, accord with the state of tensile extrusion demolding just, even have special characteristics on the casing of side, as long as not mismatching very much, also can realize through a small amount of machine tooling in later stage. Intermediate expandable stretch profiles may also be varied. The shell is very strong in universality, and can be easily flattened by cutting the length.

And the two ends of the shell 2 are also provided with internal thread hole columns for fixing the front cover plate 1 and the rear cover plate 3. And the outer walls of the front cover plate 1 and the rear cover plate 3 are also provided with connecting lugs matched with the internal thread hole columns.

The inboard of front shroud 1 is equipped with the multichannel bulge loop, and multichannel bulge loop and front shroud 1 form a plurality of step faces, make one of them bulge loop and cooling inner circle 23 terminal surfaces counterbalance after front shroud 1 is fixed with casing 2, be equipped with first sealing washer 7 between 2 terminal surface corners of casing and the front shroud 1, be equipped with second sealing washer 8 between the inner wall corner of cooling inner circle 23 and the bulge loop.

The same, the inboard of back shroud 3 is equipped with the multichannel bulge loop, and multichannel bulge loop and back shroud 3 form a plurality of step faces, make one of them bulge loop and cooling inner circle 23 terminal surfaces offset after back shroud 3 is fixed with casing 2, be equipped with first sealing washer 7 between 2 terminal surface corners of casing and the back shroud 3, be equipped with second sealing washer 8 between the inner wall corner of cooling inner circle 23 and the bulge loop. The structure and the function of the first sealing ring 7 at the rear cover plate 3 are the same as those of the first sealing ring 7 at the front cover plate, and the structure and the function of the second sealing ring 8 at the rear cover plate 3 are also the same as those of the second sealing ring 8 at the front cover plate.

The utility model discloses a sealed problem is solved through setting up two sealing washers in the step department, like figure 1, both have two step seal angles in front and back apron, and the diameter of second sealing washer 8 department is the same with the shrink-on diameter of stator with the casing, and the design among the prior art all fixes a position with this tang, but during the interference step of stator shrink-on, can destroy the circularity of whole casing tang and the axiality of both ends tang diameter, so the utility model discloses a front and back apron of second sealing washer 8 department is clearance fit with the casing, even if so the circularity of casing tang is out of shape a bit can not directly cause the influence to the apron, and the second sealing washer just in time sets up in the clearance, can cushion tang deformation; the tang of casing in first sealing washer department is as the location tang with preceding back apron, the preceding back apron and the casing interference fit of here, can realize relative accurate locate function, and because the existence of cooling inner circle 23, the stator deformation that arouses when the hot jacket can not extend to the tang of casing in first sealing washer department, the circularity of assurance casing at the tang of first sealing washer department and the axiality of both ends tang diameter that the event can be better, it is sealed effectual, and can effectively improve performances such as motor NVH, the sealed diameter direction's of water course sealed realization centre in the angle of two step faces department is sealed.

Example 2

The present embodiment is substantially the same as embodiment 1 in terms of the overall structure, except that, as shown in fig. 6 to 8, the outer wall of the housing 2 is provided with heat dissipation fins 20 extending in the axial direction, and a plurality of heat dissipation fins 20 are arranged at intervals along the circumference. The heat radiating fins further improve the overall cooling efficiency.

The utility model discloses a shell structure, not only can be convenient realization water-cooling alone or oil-cooling, also can conveniently realize the integrative structure of forced air cooling water-cooling.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer 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.

Although the embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, and that any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A motor housing for facilitating cooling, comprising: the inner wall of the shell (2) is provided with a cooling inner ring (23), two ends of the cooling inner ring (23) are lower than two ends of the shell, a circle of axial cooling pipelines (21) are arranged in the cooling inner ring (23) at intervals along the circumference, and the axial cooling pipelines (21) are connected into a whole circulating pipeline through communicating grooves (22) at two ends respectively.

2. A motor housing for facilitating cooling according to claim 1, wherein: the circulating pipeline is formed by connecting a plurality of axial cooling pipelines (21) in series end to end through communicating grooves (22).

3. The motor housing facilitating cooling of claim 1, wherein: the outer wall of the shell (2) is provided with radiating fins (20) extending along the axial direction, and the radiating fins (20) are arranged at intervals along the circumference.

4. The utility model provides a motor, includes front shroud (1), casing (2), back shroud (3), stator (4), pivot (5) and rotor core (6), the both ends at casing (2) are fixed respectively in front shroud (1) and back shroud (3), rotor core (6) fixed cover is established on pivot (5), and the both ends of pivot (5) are passed through the bearing rotation with front shroud (1) and back shroud (3) respectively and are connected, stator (4) set up at shells inner wall, its characterized in that: the housing (2) is a motor housing according to any one of claims 1 to 3.

5. An electrical machine according to claim 4, wherein: the inboard of front shroud (1) is equipped with the multichannel bulge loop, and multichannel bulge loop and front shroud (1) form a plurality of step faces, make one of them bulge loop and cooling inner circle (23) terminal surface offset after front shroud (1) is fixed with casing (2), be equipped with first sealing washer (7) between casing (2) terminal surface corner and front shroud (1), be equipped with second sealing washer (8) between the inner wall corner of cooling inner circle (23) and the bulge loop.

6. An electrical machine according to claim 4, wherein: the inboard of back shroud (3) is equipped with the multichannel bulge loop, and multichannel bulge loop and back shroud (3) form a plurality of step faces, make one of them bulge loop and cooling inner circle (23) terminal surface offset after back shroud (3) are fixed with casing (2), be equipped with first sealing washer (7) between casing (2) terminal surface corner and back shroud (3), be equipped with second sealing washer (8) between the inner wall corner of cooling inner circle (23) and the bulge loop.

7. An electrical machine according to claim 4, wherein: and the front cover plate (1) is also provided with a liquid inlet pipe (11) and a liquid outlet pipe (12) which are respectively communicated with the two ends of the circulating pipeline.

8. An electrical machine according to claim 4, wherein: and internal thread hole columns for fixing the front cover plate (1) and the rear cover plate (3) are further arranged at two ends of the shell (2).

9. An electrical machine according to claim 8, wherein: and connecting lugs matched with the internal thread hole columns are further arranged on the outer walls of the front cover plate (1) and the rear cover plate (3).