CN215682065U

CN215682065U - Permanent magnet synchronous motor with water cooling sleeve

Info

Publication number: CN215682065U
Application number: CN202121304362.1U
Authority: CN
Inventors: 吴楠
Original assignee: Tianjin Yuanke Technology Development Co ltd
Current assignee: Tianjin Yuanke Technology Development Co ltd
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-28
Anticipated expiration: 2031-06-10

Abstract

The utility model provides a permanent magnet synchronous motor with a water cooling jacket, which comprises a machine core, a machine shell, a middle shaft and the water cooling jacket, wherein the machine core is sequentially sleeved with the machine shell and the water cooling jacket from inside to outside, a first end cover and a second end cover are respectively arranged at two ends of the machine shell, the periphery of the middle shaft is fixedly installed on an inner ring of the machine core, the periphery of the middle shaft is respectively sleeved on the middle part of the first end cover and the middle part of the second end cover, a cavity is arranged in the water cooling jacket, cooling media are filled in the cavity, a first pipeline is installed at one end of the water cooling jacket, and a second pipeline is installed at the other end of the water cooling jacket. According to the permanent magnet synchronous motor with the water cooling sleeve, cooling water in the compressor circulates in the cavity, heat exchange is provided for the rotor and the stator in the motor, the working environment temperature of the rotor and the stator is reduced, the power density of the permanent magnet synchronous motor is improved, the service lives of the rotor and the stator are prolonged, and the maintenance cost is saved.

Description

Permanent magnet synchronous motor with water cooling sleeve

Technical Field

The utility model belongs to the field of water-cooling heat dissipation of motors, and particularly relates to a permanent magnet synchronous motor with a water cooling jacket.

Background

The permanent magnet synchronous motor provides excitation by the permanent magnet, so that the structure of the motor is simpler, the processing and assembling cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved. The permanent magnet synchronous motor is composed of a stator, a rotor, an end cover and the like. The stator is basically the same as a common induction motor, and a lamination structure is adopted to reduce iron loss during the operation of the motor. The rotor can be made into solid or laminated by lamination. The armature winding can adopt a concentrated whole-pitch winding, and can also adopt a distributed short-pitch winding and an unconventional winding. In the design and practical application of a permanent magnet synchronous motor applied to an electric automobile, the maximum power density is often limited by the heat dissipation effect of the permanent magnet motor. The water cooling system is used as the most main heat dissipation way of the permanent magnet synchronous motor of the electric automobile, the water cooling effect of the water cooling shell is improved, the water cooling system is an important means for further improving the power density of the permanent magnet synchronous motor, in addition, the problem of low power density of the installed and used synchronous motor can be solved by additionally arranging a water cooling jacket outside the synchronous motor, and meanwhile, the service life of the synchronous motor can also be prolonged.

Disclosure of Invention

In view of this, the utility model aims to provide a permanent magnet synchronous motor with a water cooling jacket to solve the problems of low power density and short service life of the permanent magnet synchronous motor without the water cooling jacket.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a take PMSM of water-cooling jacket, includes the core, the casing, axis and water-cooling jacket, the core cup joints casing and water-cooling jacket by inside and outside in proper order, and the both ends of casing set up first end cover and second end cover respectively, centraxonial periphery fixed mounting to core inner circle, and the axis periphery cup joints first end cover middle part, second end cover middle part respectively, the inside cavity that is equipped with of water-cooling jacket, the inside cooling medium that fills of cavity, and water-cooling jacket one end installation first pipeline, the second pipeline is installed to the water-cooling jacket other end.

Furthermore, the machine core comprises a first pressing plate, a rotor, a support, a stator and a second pressing plate, the rotor is installed on the periphery of the middle shaft through the support, the periphery of the rotor is located in an inner ring of the stator, the periphery of the stator is fixedly connected to an inner ring of the casing, the first pressing plate and the second pressing plate are respectively arranged at two ends of the rotor, first through holes are respectively formed in the middle parts of the first pressing plate and the second pressing plate, and the periphery of the middle shaft is located in the first through holes.

Furthermore, the water cooling jacket is of a hollow cylindrical structure, an annular groove is formed in the inner ring of the water cooling jacket, and a cavity is formed between the annular groove and the outer wall of the shell.

Furthermore, a plurality of partition plates are arranged inside the water cooling sleeve and are uniformly distributed along the radial direction of the water cooling sleeve, the inner side of each partition plate is in contact connection with the periphery of the shell, the cavity is divided into a plurality of gaps by the partition plates, water holes are formed in the partition plates, and every two gaps are communicated with each other through the water holes.

Furthermore, the water cooling jacket and the partition plate are of a pouring integrated structure.

Furthermore, the inner rings at two ends of the water cooling jacket are respectively provided with a pressing nut, the inner rings at two ends of the water cooling jacket are respectively provided with threads, the periphery of the pressing nut is connected to the inner ring of the water cooling jacket in a threaded manner, one end of the pressing nut is in contact connection with one end of the first end cover, a second through hole is formed in the middle of the pressing nut, and the middle shaft is located in the second through hole.

Furthermore, a sealing ring is arranged at one end of the pressing nut, and the periphery of the sealing ring is in contact connection with one end of the first end cover.

Compared with the prior art, the permanent magnet synchronous motor with the water cooling jacket has the following beneficial effects: the cooling water in the compressor circulates in the cavity, heat exchange is provided for the rotor and the stator in the motor, the temperature of the working environment of the rotor and the stator is reduced, the power density of the permanent magnet synchronous motor is improved, the service life of the rotor and the service life of the stator are prolonged, and the maintenance cost is saved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an exploded schematic view of a water cooling jacket assembled on a permanent magnet synchronous motor according to an embodiment of the utility model;

fig. 2 is an exploded view of a movement of a permanent magnet synchronous motor according to an embodiment of the present invention;

FIG. 3 is an exploded view of a water jacket according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a water jacket according to an embodiment of the present invention.

Description of reference numerals:

1-a machine core; 11-a first platen; 12-a rotor; 13-a scaffold; 14-a stator; 15-a second platen; 2-a housing; 3-the middle shaft; 4-water cooling jacket; 41-a separator; 42-pressing a nut; 43-sealing ring; 5-a first end cap; 6-second end cap.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-4, the permanent magnet synchronous motor with a water cooling jacket comprises a machine core 1, a machine shell 2, a middle shaft 3 and a water cooling jacket 4, wherein the machine core 1 is sequentially sleeved with the machine shell 2 and the water cooling jacket 4 from inside to outside, a first end cover 5 and a second end cover 6 are respectively arranged at two ends of the machine shell 2, the periphery of the middle shaft 3 is fixedly installed on the inner ring of the machine core 1, the periphery of the middle shaft 3 is respectively sleeved at the middle part of the first end cover 5 and the middle part of the second end cover 6, a cavity is arranged inside the water cooling jacket 4, a cooling medium is filled in the cavity, a first pipeline is installed at one end of the water cooling jacket 4, a second pipeline is installed at the other end of the water cooling jacket 4, the first pipeline is connected to the water outlet end of a refrigeration compressor, the second pipeline is connected to the water inlet end of the refrigeration compressor, cooling water in the compressor circulates in the cavity to provide heat exchange for a rotor 12 and a stator 14 inside the motor, and reduce the working environment temperature of the rotor 12 and the stator 14, the power density of the permanent magnet synchronous motor is improved, the service lives of the rotor 12 and the stator 14 are prolonged, and the maintenance cost is saved.

The movement 1 comprises a first pressing plate 11, a rotor 12, a support 13, a stator 14 and a second pressing plate 15, the rotor 12 is installed on the periphery of the middle shaft 3 through the support 13, the periphery of the rotor 12 is located at the inner ring of the stator 14, the periphery of the stator 14 is fixedly connected to the inner ring of the casing 2, the first pressing plate 11 and the second pressing plate 15 are respectively arranged at two ends of the rotor 12, first through holes are respectively formed in the middle parts of the first pressing plate 11 and the second pressing plate 15, and the periphery of the middle shaft 3 is located in the first through holes.

For the installation of making things convenient for water-cooling jacket 4, water-cooling jacket 4 is the hollow circular cylinder structure, and 4 inner circles of water-cooling jacket are equipped with the annular, the annular forms the cavity with casing 2 outer wall, and the staff cup joints to casing 2 periphery with the water-cooling jacket 4 that the peripheral size of casing 2 matches when the installation and can accomplish the installation, installs the convenience additional.

Inside a plurality of baffles 41 that set up at water-cooling jacket 4, and a plurality of baffles 41 are along water-cooling jacket 4 radial equipartition, and the inboard contact of every baffle 41 is connected to the periphery of casing 2, and baffle 41 cuts apart the cavity into a plurality of clearances, is equipped with the water hole on the baffle 41, is linked together through the water hole between two liang of clearances, and water-cooling jacket 4 and baffle 41 are pouring integrative structure for the cooling water in the compressor is in the water-cooling runner of labyrinth full heat exchange.

For some installed and used synchronous motors, a water cooling jacket 4 is additionally arranged, inner rings at two ends of the water cooling jacket 4 are respectively provided with a pressing nut 42, inner rings at two ends of the water cooling jacket 4 are respectively provided with threads, the periphery of the pressing nut 42 is connected to the inner rings of the water cooling jacket 4 in a threaded manner, one end of the pressing nut 42 is connected to one end of a first end cover 5 in a contact manner, a second through hole is formed in the middle of the pressing nut 42, a middle shaft 3 is located in the second through hole, a worker locks the relative position of the water jacket and the shell 2 through the pressing nut 42, one end of the pressing nut 42 is provided with a sealing ring 43, and the periphery of the sealing ring 43 is connected to one end of the first end cover 5 in a contact manner, so that the sealing of the part is ensured, and cooling water in the water cooling jacket 4 is prevented from leaking out to cause that the synchronous motor cannot work normally.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Take water-cooling jacket's PMSM, its characterized in that: including core (1), casing (2), axis (3) and water-cooling jacket (4), core (1) cup joints casing (2) and water-cooling jacket (4) by inside and outside in proper order, and the both ends of casing (2) set up first end cover (5) and second end cover (6) respectively, the peripheral fixed mounting of axis (3) to core (1) inner circle, and axis (3) periphery cup joints first end cover (5) middle part respectively, second end cover (6) middle part, water-cooling jacket (4) inside is equipped with the cavity, the inside cooling medium that fills of cavity, and water-cooling jacket (4) one end installation first pipeline, water-cooling jacket (4) other end installation second pipeline.

2. The permanent magnet synchronous motor with the water cooling jacket according to claim 1, characterized in that: the movement (1) comprises a first pressing plate (11), a rotor (12), a support (13), a stator (14) and a second pressing plate (15), the rotor (12) is installed on the periphery of the middle shaft (3) through the support (13), the periphery of the rotor (12) is located on the inner ring of the stator (14), the periphery of the stator (14) is fixedly connected to the inner ring of the casing (2), the two ends of the rotor (12) are respectively provided with the first pressing plate (11) and the second pressing plate (15), the middle parts of the first pressing plate (11) and the second pressing plate (15) are respectively provided with a first through hole, and the periphery of the middle shaft (3) is located in the first through hole.

3. The permanent magnet synchronous motor with the water cooling jacket according to claim 1, characterized in that: the water cooling sleeve (4) is of a hollow cylindrical structure, an annular groove is formed in the inner ring of the water cooling sleeve (4), and a cavity is formed between the annular groove and the outer wall of the shell (2).

4. The permanent magnet synchronous motor with a water cooling jacket according to claim 3, characterized in that: the water cooling jacket (4) is internally provided with a plurality of partition plates (41), the partition plates (41) are uniformly distributed along the radial direction of the water cooling jacket (4), the inner side of each partition plate (41) is in contact connection with the periphery of the casing (2), the cavity is divided into a plurality of gaps by the partition plates (41), water holes are formed in the partition plates (41), and every two gaps are communicated with each other through the water holes.

5. The permanent magnet synchronous motor with the water cooling jacket according to claim 4, characterized in that: the water cooling jacket (4) and the partition plate (41) are of a pouring integrated structure.

6. The permanent magnet synchronous motor with the water cooling jacket according to claim 4, characterized in that: inner rings at two ends of the water cooling sleeve (4) are respectively provided with a pressing nut (42), the inner rings at two ends of the water cooling sleeve (4) are respectively provided with threads, the periphery of the pressing nut (42) is in threaded connection with the inner ring of the water cooling sleeve (4), one end of the pressing nut (42) is in contact connection with one end of the first end cover (5), a second through hole is formed in the middle of the pressing nut (42), and the middle shaft (3) is located in the second through hole.

7. The permanent magnet synchronous motor with the water cooling jacket according to claim 6, characterized in that: one end of the pressing nut (42) is provided with a sealing ring (43), and the periphery of the sealing ring (43) is in contact connection with one end of the first end cover (5).