CN113394908A - Motor cooling structure, motor and manufacturing method of motor - Google Patents
Motor cooling structure, motor and manufacturing method of motor Download PDFInfo
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- CN113394908A CN113394908A CN202110718404.4A CN202110718404A CN113394908A CN 113394908 A CN113394908 A CN 113394908A CN 202110718404 A CN202110718404 A CN 202110718404A CN 113394908 A CN113394908 A CN 113394908A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Cooling System (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a motor cooling structure, a motor and a manufacturing method of the motor, and relates to the technical field of motors. The structural form of the cooling groove can effectively improve the flow speed and the turbulence degree of the cooling medium in the cooling groove, thereby improving the cooling capacity of the motor and increasing the power density of the motor. Meanwhile, a plurality of cooling grooves are formed in the motor, so that the cooling capacity of the motor can be further improved.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a motor cooling structure, a motor and a manufacturing method of the motor.
Background
With the progress of society and the development of technology, in the field of motors, when the technology is relatively mature and the products are relatively standardized, how to improve the power density of the motor by refining the product development and design is a subject of current technical research, and an important factor for restricting the power density of the motor is that the insulation of a winding is damaged under a high-temperature condition, so that an effective cooling system is required to ensure that the motor works within a safe temperature range. In the prior art, a relatively common motor cooling system comprises a motor shell water jacket liquid cooling system, a shell air cooling system and the like, namely, cooling medium flows through a motor body structure to take away heat for cooling, but the existing motor body structure is not refined and perfect in research design on the aspect of cooling in cooperation with the cooling system, and further improvement can be made.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems to some extent.
To this end, in one aspect, the present invention provides a cooling structure for a motor, including a plurality of cooling grooves adapted to be disposed inside the motor, the cooling grooves being disposed in a direction of a rotation shaft of the motor and adapted to circulate a cooling medium, the cooling grooves including wide portions disposed at both ends of the cooling grooves and a narrow portion disposed between the wide portions, the wide portions having a cross-sectional area larger than that of the narrow portion, and the cooling grooves having cross-sectional areas gradually decreasing in directions in which both ends of the cooling grooves extend toward the narrow portion.
Optionally, a plurality of the cooling grooves are uniformly distributed in the circumferential direction of the inside of the motor.
Optionally, the cooling groove includes a bottom wall and two opposite side walls, the bottom wall is configured as a plane, and the two side walls are symmetrically configured as arc surfaces.
Alternatively, the narrow portion is provided at a middle portion of the cooling groove, and the two wide portions are symmetrically provided with respect to the narrow portion.
Optionally, the cooling groove is linear long strip-shaped or spiral long strip-shaped along the direction of the rotating shaft of the motor.
Optionally, the cross-sectional shape of the cooling groove in the length direction is a laval nozzle cross-sectional shape.
Optionally, the cooling groove is formed by orderly overlapping a plurality of special-shaped silicon steel sheets.
Compared with the prior art, the motor cooling structure provided by the invention has the following technical effects:
the motor cooling structure provided by the invention has the advantages that the plurality of cooling grooves are arranged in the motor, the cooling grooves are arranged along the rotating shaft direction of the motor, meanwhile, the cooling grooves are arranged into a structure with wide parts at two ends and a narrow part between the two wide parts, and the two ends of the cooling groove are arranged in the extending direction of the narrow part to form a structure form that the section area of the cooling groove is gradually reduced, that is, the flow passage in the cooling groove is gradually narrowed from the wide portion at both ends to the narrow portion, and when the cooling medium flows from one end to the other end in the cooling groove, it first passes through the case where the passage is gradually narrowed, at the moment, the flow velocity of the cooling medium is gradually increased under the extrusion acting force of the inner wall of the cooling groove on the cooling medium, when the cooling medium flows through the narrow part of the cooling groove, the channel is gradually widened and released by the acting force of the gradually narrowed channel, and the flow velocity of the cooling medium is further increased. Therefore, under the condition that the pressure and other conditions applied by the cooling system to the cooling medium are not changed, the structural form of the cooling groove can effectively improve the flow speed and the turbulence degree of the cooling medium in the cooling groove, so that the cooling capacity of the motor is improved, and the power density of the motor is increased. Meanwhile, a plurality of cooling grooves are formed in the motor, so that the cooling capacity of the motor can be further improved.
On the other hand, in order to solve the above problems, the present invention provides a motor, including the above motor cooling structure, further including a casing, and a stator and a rotor arranged in the casing, wherein the rotor is arranged in the stator, and a plurality of cooling grooves of the motor cooling structure are uniformly arranged on an outer circumferential surface of the stator and/or the rotor.
Optionally, a plurality of cooling grooves are uniformly distributed on the circumferential surface of the inner wall of the casing.
Compared with the prior art, the motor provided by the invention has the technical effect which is substantially the same as that of the motor cooling structure, and the details are not repeated.
In addition, in order to solve the above problems, the present invention also provides a method for manufacturing a motor, including the steps of:
preparing a plurality of silicon steel sheets for constituting a rotor (10) and a stator (20) of the motor, and processing the silicon steel sheets to correspond to sectional shapes of the rotor (10) and the stator (20);
respectively processing the outer circumferences of the silicon steel sheets for forming the rotor by stamping, wire cutting and laser cutting to form the shapes which are respectively the same as the cross sections of different positions on a cooling groove of the motor, and/or respectively processing the outer circumferences of the silicon steel sheets for forming the stator by stamping, wire cutting and laser cutting to form the shapes which are respectively the same as the cross sections of different positions on the cooling groove;
sequentially stacking a plurality of silicon steel sheets for forming the rotor and the stator in a one-to-one correspondence manner to form the rotor and the stator, so that the cross-sectional area of the cooling groove is gradually reduced in the direction from the two ends of the cooling groove to the middle of the cooling groove;
preparing a housing of the motor, and assembling the rotor and the stator in the housing.
Optionally, the preparing the housing of the motor includes: and a plurality of cooling grooves are uniformly distributed on the circumferential surface of the inner wall of the shell.
Compared with the prior art, the manufacturing method of the motor provided by the invention has the following technical effects:
the motor manufactured by the manufacturing method of the motor provided by the invention has the substantially same technical effects as the motor, and is not repeated herein.
Drawings
Fig. 1 is a schematic perspective view of a rotor of a motor according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a stator of a motor according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a housing of a motor according to an embodiment of the invention.
Description of reference numerals:
10-rotor, 20-stator, 30-casing, 40-cooling groove, 41-bottom wall, 42-side wall.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
It should be noted that in the description of the present disclosure, the directions or positional relationships indicated by "upper", "lower", "left", "right", "top", "bottom", "front", "rear", "inner" and "outer" are used as the directions or positional relationships indicated in the drawings, which are only for convenience of describing the present disclosure, but do not indicate or imply that the device referred to must have a specific direction, be configured and operated in a specific direction, and thus, should not be interpreted as limiting the scope of the present disclosure.
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 at least one such feature.
Moreover, although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, an embodiment of the present invention provides a motor cooling structure, including a plurality of cooling grooves 40 adapted to be disposed inside a motor, where the cooling grooves 40 are disposed along a rotation axis direction of the motor and adapted to circulate a cooling medium, and a cross-sectional area of the cooling grooves 40 is gradually reduced in a direction in which two ends of the cooling grooves 40 extend toward a middle portion of the cooling grooves 40.
It should be noted that, the cooling grooves 40 provided in this embodiment may be disposed on the outer circumferential surface of the rotor 10 and/or the outer circumferential surface of the stator 20 and/or the inner circumferential surface of the casing 30 inside the motor, and the positions and the number of the cooling grooves 40 may be set according to the actual working environment requirement of the motor and the actual requirement on the cooling capacity of the motor.
Preferably, the cooling grooves 40 are uniformly distributed on the outer circumferential surfaces of the rotor 10 and the stator 20 of the motor and on the circumferential surface of the inner wall of the casing 30, and the cooling grooves 40 are gradually narrowed from the two ends to the middle, so as to increase the flow rate and turbulence of the cooling medium flowing in the cooling grooves 40 to the maximum extent, and further improve the cooling capacity of the motor.
The motor cooling structure provided by the embodiment is that a plurality of cooling grooves 40 are arranged in the motor, the cooling grooves 40 are arranged along the direction of the rotating shaft of the motor, the cooling grooves 40 are arranged in a structure that two ends are wide parts and a narrow part is arranged between the two wide parts, and the cross-sectional area of the cooling grooves 40 is gradually reduced by extending the two ends of the cooling grooves 40 to the narrow part, namely, the flow channel in the cooling grooves 40 is gradually narrowed from the two ends to the narrow part, when the cooling medium flows in the cooling grooves 40 from one end to the other end, the cooling medium passes through the channel, at this time, under the extrusion force of the cooling medium by the inner wall of the cooling grooves 40, the flow speed of the cooling medium is gradually increased, when the cooling medium flows through the narrow part of the cooling grooves 40, the channel is gradually widened, and the force of the gradually narrowed channel is released, the flow rate of the cooling medium is further increased. Therefore, under the condition that the pressure and other conditions applied by the cooling system to the cooling medium are not changed, the structural form of the cooling groove 40 in the embodiment can effectively improve the flow speed and the turbulence degree of the cooling medium in the cooling groove 40, so that the cooling capacity of the motor is improved, and the power density of the motor is increased. Meanwhile, a plurality of cooling grooves 40 are formed in the motor, so that the cooling capacity of the motor can be further improved.
It should be noted that the cooling medium described in this embodiment includes, but is not limited to, insulating liquid such as machine oil, non-insulating liquid such as non-deionized water, and gaseous medium such as air. The motor cooling structure provided by the embodiment can effectively improve the flow speed and the turbulence of the cooling medium in the cooling groove 40, and the principle of increasing the cooling capacity of the motor is the same.
Alternatively, as shown in fig. 1 to 3, a plurality of cooling grooves 40 provided in this embodiment are uniformly distributed in the circumferential direction inside the motor.
In this embodiment, through the setting with a plurality of cooling grooves 40 equipartitions in the circumferencial direction of the inside of motor for the motor cooling structure of this embodiment is convenient for produce and processing, and the production process is orderly controllable, is convenient for control cooling medium velocity of flow and turbulence degree in cooling groove 40 simultaneously, can provide the cooling scheme for the actual work needs more accurately.
Optionally, as shown in fig. 3, the cooling groove 40 provided in this embodiment includes a bottom wall 41 and two opposite side walls 42, where the bottom wall 41 is configured as a plane, and the two side walls 42 are symmetrically configured as arc surfaces.
In this embodiment, two lateral walls 42 have set up the structure that has constituted a cooling groove 40 in the both sides of a diapire 41, through setting up diapire 41 as the plane, be convenient for the coolant at the circulation of cooling groove 40, and set up two lateral walls 42 symmetry, be convenient for holistic production and processing, simultaneously, all set up two lateral walls 42 to the structural style of cambered surface, be convenient for production and processing on the one hand and be convenient for the coolant circulation, on the other hand can increase the contact probability and the area of contact with cooling groove 40 inner wall when the coolant circulates in cooling groove 40, and then increased the heat exchange capacity of coolant and cooling groove 40, the cooling capacity of motor has further been increased promptly.
Alternatively, as shown in fig. 1 to 3, the narrow portion provided in the present embodiment is disposed in the middle of the cooling groove 40, and the two wide portions are symmetrically disposed with respect to the narrow portion.
In this embodiment, through setting up two wide parts relatively narrow part symmetries to the narrow part setting is at the middle part of cooling groove 40, and cooling groove 40 is the middle part symmetry setting promptly, and the production and processing of being convenient for on the one hand is convenient for, and it is standardized to be convenient for control product quality and product, and on the other hand, is convenient for regulate and control the velocity of flow of cooling medium at this cooling groove 40, can provide controllable adjustable motor cooling scheme according to actual operation needs.
It should be noted that, in this embodiment, the main structures of the rotor 10 and the stator 20 of the motor may be formed by stacking silicon steel sheets, under the condition of this production and processing procedure, the cooling groove 40 is arranged in a middle portion of the cooling groove, which is convenient to process, that is, when the structure of the cooling groove 40 is produced and processed, preferably, the cooling groove 40 is formed by sequentially stacking a plurality of special-shaped silicon steel sheets, that is, the silicon steel sheets may be formed in a stamping one-step manner or in a wire cutting manner, a laser cutting manner, and the like, and then the silicon steel sheets are stacked in a certain order to form a three-dimensional structure of the cooling groove 40, that is, the main structures of the rotor 10 and the stator 20 may be assembled after being processed by dividing the two symmetrical portions from the middle portion. Therefore, the cooling groove 40 is formed by orderly overlapping a plurality of special-shaped silicon steel sheets, so that the production and machining efficiency can be effectively improved, the product quality can be conveniently controlled, and the product standardization and quality can be further improved.
Optionally, the sectional shape of the cooling groove 40 in the length direction provided by this embodiment is a laval nozzle sectional shape.
It should be noted that the laval nozzle is an important component of the thrust chamber, the front half of the laval nozzle is contracted from small to middle to a narrow throat, and the narrow throat is then expanded from small to large to the other end, the narrow throat is equivalent to the narrow portion of the cooling groove 40 in this embodiment, and the two ends are wide portions, and the airflow in the laval nozzle passes through the front half and the rear half after passing through the narrow throat. The structure can change the speed of the airflow due to the change of the cross section area of the nozzle, so that the airflow is accelerated from subsonic speed to sonic speed to supersonic speed.
In the present embodiment, the sectional shape of the cooling groove 40 in the length direction is set to be a laval nozzle sectional shape, that is, the cooling medium flow channel formed by the cooling groove 40 is set to be a laval nozzle structural form, so that the cooling medium flowing through the cooling groove 40 can be accelerated continuously, the flow speed of the cooling medium inside the motor is further increased, that is, the cooling capacity of the motor is further enhanced.
Alternatively, as shown in fig. 1 to 3, the cooling groove 40 provided in the present embodiment is elongated in a linear shape in the direction of the rotation axis of the motor.
In the present embodiment, the cooling groove 40 is configured to be linear-shaped and long in the direction of the rotation shaft of the motor, so that the production and processing are facilitated, and the circulation of the cooling medium in the cooling groove 40 is facilitated.
Alternatively, the cooling groove 40 provided in this embodiment may also be a spiral strip along the direction of the rotating shaft of the motor.
In this embodiment, the cooling groove 40 is configured to be a spiral strip along the rotation axis of the motor, so as to further increase the flow rate and turbulence of the cooling medium in the cooling groove 40, that is, when the motor is in operation, the rotor 10 rotates to disturb the cooling medium inside the motor to rotate at the same time, and the cooling groove 40 is configured to be a spiral, so as to further increase the flow rate and turbulence of the cooling medium in the cooling groove 40 along with the rotation of the rotor 10, thereby further improving the cooling capacity of the motor.
As shown in fig. 1 to fig. 3, another embodiment of the present invention provides a motor, which includes the above-mentioned motor cooling structure, and further includes a casing 30, and a stator 20 and a rotor 10 that are disposed in the casing 30, wherein the rotor 10 is disposed in the stator 20, and a plurality of cooling grooves 40 of the motor cooling structure are uniformly disposed on an outer circumferential surface of the stator 20 and/or the rotor 10.
Optionally, a plurality of cooling grooves 40 are uniformly distributed on the circumferential surface of the inner wall of the casing 30 provided in this embodiment.
In the present embodiment, a plurality of cooling grooves 40 are uniformly distributed on the outer circumferential surface of the rotor 10 and/or the outer circumferential surface of the stator 20 and/or the inner circumferential surface of the casing 30 inside the motor, so that the positions and the number of the cooling grooves 40 can be set according to the actual working environment requirement of the motor and the actual requirement on the cooling capacity of the motor.
Preferably, in the motor provided by the present embodiment, the plurality of cooling grooves 40 are uniformly distributed on the outer circumferential surfaces of the rotor 10 and the stator 20, and on the circumferential surface of the inner wall of the casing 30, and the structure of the cooling grooves 40 is gradually narrowed from the two ends to the middle, so as to increase the flow rate and turbulence of the cooling medium inside the motor flowing in the cooling grooves 40 to the maximum extent, thereby improving the cooling capability of the motor, and increasing the power density of the motor.
It should be understood that the motor provided in this embodiment further includes other motor components, such as windings, that are not described in this embodiment, and a cooling system corresponding to the motor cooling structure, and under the condition that other components are not changed, and under the condition that the cooling system gives a constant pressure and flow rate to the cooling medium, the motor provided in this embodiment effectively improves the cooling capacity of the motor by the motor cooling structure arranged inside the motor cooling structure and the above-mentioned structural arrangement of the cooling grooves 40 in the motor cooling structure, thereby improving the power density of the motor. And is convenient for production and processing. The principle and the technical effect of the motor cooling structure are substantially the same, and the description is omitted.
Another embodiment of the present invention provides a method for manufacturing a motor, which is used for manufacturing the motor, and includes the following steps:
step one, preparing a plurality of silicon steel sheets for forming the rotor 10 and the stator 20 of the motor, and processing the silicon steel sheets to correspond to the sectional shapes of the rotor 10 and the stator 20.
And secondly, processing the outer circumferences of the silicon steel sheets for forming the rotor 10 in a stamping mode, a wire cutting mode, a laser cutting mode and the like respectively to form the shapes which are respectively the same as the cross sections of different positions on the cooling groove 40 of the motor, and/or processing the outer circumferences of the silicon steel sheets for forming the stator 20 in a stamping mode, a wire cutting mode, a laser cutting mode and the like to form the shapes which are respectively the same as the cross sections of different positions on the cooling groove 40.
And thirdly, orderly stacking a plurality of silicon steel sheets for forming the rotor 10 and the stator 20 in a one-to-one correspondence manner to manufacture the rotor 10 and the stator 20, so that the cross-sectional area of the cooling groove 40 is gradually reduced in the direction from the two ends of the cooling groove 40 to the middle of the cooling groove 40.
And step four, preparing a casing 30 of the motor, and assembling the rotor 10 and the stator 20 in the casing 30.
Optionally, the fourth step includes: a plurality of cooling grooves 40 are uniformly distributed on the circumferential surface of the inner wall of the casing 30.
In the present embodiment, by the method, that is, by selectively and differentially processing a plurality of silicon steel sheets, and then sequentially stacking them to form the main structures of the rotor 10 and the stator 20, and the structures of the cooling grooves 40 and the cooling grooves 40 on the rotor 10 and the stator 20, and further selectively processing the casing 30, a free combination of the rotor 10, the stator 20, and the casing 30 having the structures of the cooling grooves 40 in the above embodiments can be achieved to form the motor in the above embodiments. The motor manufactured by the manufacturing method has substantially the same technical effects as the motor in the embodiment, and the details are not repeated herein. Meanwhile, the method has the advantages of simple process, convenient operation, easy realization, convenient batch production and processing, convenient standardized production of products and product quality control.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (11)
1. A cooling structure of an electric motor, comprising a plurality of cooling grooves (40) adapted to be provided inside the electric motor, the cooling grooves (40) being provided in a direction of a rotation shaft of the electric motor and adapted to circulate a cooling medium, the cooling grooves (40) including wide portions provided at both ends of the cooling grooves (40) and narrow portions provided between the wide portions, the wide portions having a cross-sectional area larger than that of the narrow portions, and the cross-sectional area of the cooling grooves (40) being gradually reduced in a direction in which both ends of the cooling grooves (40) extend toward the narrow portions.
2. The motor cooling structure according to claim 1, wherein a plurality of the cooling grooves (40) are uniformly arranged in a circumferential direction of an inside of the motor.
3. The motor cooling structure according to claim 2, wherein the cooling groove (40) comprises a bottom wall (41) and two oppositely arranged side walls (42), the bottom wall (41) is arranged as a plane, and the two side walls (42) are symmetrically arranged as cambered surfaces.
4. The motor cooling structure according to claim 3, wherein the narrow portion is provided at a middle portion of the cooling groove (40), and the two wide portions are symmetrically provided with respect to the narrow portion.
5. The motor cooling structure according to claim 1, wherein the cooling groove (40) has a linear-type elongated shape or a spiral-type elongated shape in the direction of the rotational axis of the motor.
6. The motor cooling structure according to claim 1, wherein the cross-sectional shape of the cooling groove (40) in the longitudinal direction is a laval nozzle cross-sectional shape.
7. The motor cooling structure according to claim 1, wherein the cooling groove (40) is made by orderly stacking a plurality of special-shaped silicon steel sheets.
8. An electric machine, comprising the motor cooling structure according to any one of claims 1 to 7, and further comprising a housing (30), and a stator (20) and a rotor (10) disposed in the housing (30), wherein the rotor (10) is disposed in the stator (20), and a plurality of cooling grooves (40) of the motor cooling structure are uniformly disposed on an outer circumferential surface of the stator (20) and/or the rotor (10).
9. The electric machine according to claim 8, characterized in that a plurality of said cooling grooves (40) are uniformly distributed on the circumferential surface of the inner wall of said casing (30).
10. A method of manufacturing an electrical machine for manufacturing an electrical machine according to claim 8 or 9, comprising the steps of:
preparing a plurality of silicon steel sheets for constituting a rotor (10) and a stator (20) of the motor, and processing the silicon steel sheets to correspond to sectional shapes of the rotor (10) and the stator (20);
respectively processing the outer circumferences of a plurality of silicon steel sheets for forming the rotor (10) by stamping or wire cutting and laser cutting to form the shapes which are respectively the same as the sections of different positions on a cooling groove (40) of the motor, and/or respectively processing the outer circumferences of a plurality of silicon steel sheets for forming the stator (20) by stamping or wire cutting and laser cutting to form the shapes which are respectively the same as the sections of different positions on the cooling groove (40);
sequentially stacking a plurality of silicon steel sheets for forming the rotor (10) and the stator (20) in a one-to-one correspondence manner to manufacture the rotor (10) and the stator (20), so that the cross-sectional area of the cooling groove (40) is gradually reduced in the direction in which the two ends of the cooling groove (40) extend to the middle of the cooling groove (40);
preparing a housing (30) of the electrical machine and assembling the rotor (10) and the stator (20) within the housing (30).
11. The method of manufacturing an electric machine according to claim 10, wherein the preparing the machine housing (30) comprises: and a plurality of cooling grooves (40) are uniformly distributed on the circumferential surface of the inner wall of the shell (30).
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| CN113394908B (en) | 2022-09-27 |
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Address after: No. 80, Haoshan Road, Chucun Town, Weihai Hi tech Industrial Development Zone, Shandong 264210 Patentee after: Weihai Xili Electronics Co.,Ltd. Address before: 264209 innovation building, No. 108, Shenyang Road, Weihai City, Shandong Province Patentee before: Weihai Xili Electronics Co.,Ltd. |
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Denomination of invention: A motor cooling structure, motor, and manufacturing method of the motor Effective date of registration: 20230922 Granted publication date: 20220927 Pledgee: China Construction Bank Corporation Weihai high tech sub branch Pledgor: Weihai Xili Electronics Co.,Ltd. Registration number: Y2023980058385 |