CN210404937U

CN210404937U - Water-cooled permanent magnet synchronous motor

Info

Publication number: CN210404937U
Application number: CN201921863725.8U
Authority: CN
Inventors: 余忠明
Original assignee: Zhangjiagang Xindafeng Electromechanical Products Mfg Co ltd
Current assignee: Zhangjiagang Xindafeng Electromechanical Products Mfg Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-04-24
Anticipated expiration: 2029-11-01

Abstract

The utility model is suitable for the technical field of permanent magnet motors, and provides a water-cooled permanent magnet synchronous motor, which comprises a machine body mechanism, a first heat dissipation mechanism and a second heat dissipation mechanism, wherein the machine body mechanism comprises a casing, a motor shaft, a front end cover and a rear end cover, the first heat dissipation mechanism comprises a first cover body, a heat dissipation sheet, a water inlet pipe and a water outlet pipe, the second heat dissipation mechanism comprises a second cover body, a fan, a first filter screen and a second filter screen, the first cover body is fixed on the outer wall of the casing and a plurality of heat dissipation sheets positioned in the first cover body are arranged, the first cover body is also fixed with the water inlet pipe and the water outlet pipe for transmitting cooling liquid, thereby the heat in the casing can be guided out by the heat dissipation sheet, the fan is driven to rotate by the motor shaft and can further dissipate heat of the motor by the fan, the utility model has the characteristics of the radiating efficiency is high, the radiating effect is good.

Description

Water-cooled permanent magnet synchronous motor

Technical Field

The utility model belongs to the technical field of the dross is salvaged, especially, relate to a water-cooled PMSM.

Background

At present, the motor for the automobile is different from power devices in other fields, and has higher requirements, such as small volume, light weight, high efficiency, low-speed large torque, high-speed constant power, wide speed regulation range and the like, so that the comfort of a new energy car is reflected, and the market acceptance rate and the occupancy rate are improved. The permanent magnet synchronous motor has the characteristics of small volume, good performance, high efficiency, high reliability and the like, and is more and more widely applied to the field of new energy saloon cars.

The rotor permanent magnet is divided into a surface-mounted type and a built-in type according to different installation positions of the permanent magnet on the rotor. Surface-mounted permanent magnets are typically tile-shaped and are attached to the outer surface of the rotor core. The built-in permanent magnets are arranged in the rotor and distributed in a linear or V shape. Since the permanent magnets are embedded inside the rotor, the permanent magnets can be prevented from flying out at high-speed operation. The motor can produce the heat when using, if can not in time effectively distribute away the heat and make the motor cooling, will influence the availability factor and the life-span of motor, burns out the motor even, and the heat dissipation of current motor often relies on the fan self-cooling mode heat dissipation of the motor of motor self, and the radiating effect is not good.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water-cooled PMSM aims at solving the fan self-cooling mode heat dissipation of the motor that prior art relied on motor self, the not good problem of radiating effect.

The utility model is realized in such a way that the water-cooled permanent magnet synchronous motor comprises a machine body mechanism, a first heat dissipation mechanism and a second heat dissipation mechanism;

the machine body mechanism comprises a machine shell, a motor shaft, a front end cover and a rear end cover, wherein the front end cover is positioned at one end of the machine shell and is fixedly connected with the machine shell, the rear end cover is positioned at the other end of the machine shell and is fixedly connected with the machine shell, the motor shaft is positioned in the machine shell, two ends of the motor shaft respectively penetrate through the front end cover and the rear end cover, and the motor shaft is rotatably connected with the front end cover and the rear end cover;

the first heat dissipation mechanism comprises a first cover body, a plurality of heat dissipation fins, a water inlet pipe and a water outlet pipe, the first cover body covers the outer side of the casing and is fixedly connected with the casing, the heat dissipation fins are arranged in the first cover body and are all arranged on the outer surface of the casing and are connected with the casing, and the water inlet pipe and the water outlet pipe are all fixed on the first cover body and are communicated with the first cover body;

the second heat dissipation mechanism comprises a second cover body, a fan, a first filter screen and a second filter screen, the second cover body covers the outer surface of the rear end cover and is fixedly connected with the rear end cover, one end of the motor shaft is located in the second cover body, the fan is fixed at one end of the motor shaft, the first filter screen is fixed at one end of the second cover body and faces the rear end cover, and the second filter screen is fixed on the side wall of the second cover body.

Preferably, the radiating fins are of an annular structure, the radiating fins are sleeved on the casing, and the radiating fins are uniformly distributed at intervals along the length direction of the casing.

Preferably, the surface of one side of the rear end cover facing the first filter screen is coated with heat-conducting silicone grease.

Preferably, a connecting piece is arranged on the outer wall of the second cover body and fixedly connected with the second cover body and the first cover body.

Preferably, the first filter screen and the second filter screen are both made of copper metal materials.

Preferably, a permanent magnet rotor is mounted at the center of the motor shaft, and a stator is mounted on the inner wall of the casing.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a water-cooled PMSM, through setting up fixed first cover body on the outer wall of casing and being located a plurality of fin of first cover internal, still be fixed with inlet tube and the outlet pipe that is used for transmitting the coolant liquid on the first cover body, thereby can utilize the heat of fin in with the casing to derive, then utilize the coolant liquid to dispel the heat, still through setting up the second cover body of fixing on the rear end cap and being located the internal fan of second cover, it is rotatory that the fan passes through the motor shaft drive, be fixed with on the second cover body and be used for filterable first filter screen and second filter screen, thereby can further dispel the heat to the motor through the fan, the utility model has the characteristics of the radiating efficiency is high, the radiating effect is good.

Drawings

Fig. 1 is a schematic view of the overall structure of a water-cooled permanent magnet synchronous motor according to the present invention;

fig. 2 is a schematic structural view of the heat sink of the present invention;

fig. 3 is a schematic structural diagram of the second cover body of the present invention.

In the figure: 1-machine body mechanism, 11-machine shell, 12-motor shaft, 13-front end cover, 14-rear end cover, 15-permanent magnet rotor, 16-stator, 2-first heat dissipation mechanism, 21-first cover body, 22-heat dissipation sheet, 23-water inlet pipe, 24-water outlet pipe, 3-second heat dissipation mechanism, 31-second cover body, 32-fan, 33-first filter screen, 34-second filter screen, 35-heat conduction silicone grease and 36-connecting sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, the present invention provides a technical solution: a water-cooled permanent magnet synchronous motor comprises a machine body mechanism 1, a first heat dissipation mechanism 2 and a second heat dissipation mechanism 3.

The machine body mechanism 1 comprises a machine shell 11, a motor shaft 12, a front end cover 13 and a rear end cover 14, wherein the front end cover 13 is positioned at one end of the machine shell 11 and is fixedly connected with the machine shell 11, the rear end cover 14 is positioned at the other end of the machine shell 11 and is fixedly connected with the machine shell 11, the motor shaft 12 is positioned in the machine shell 11, two ends of the motor shaft respectively penetrate through the front end cover 13 and the rear end cover 14, and the motor shaft 12 is rotatably connected with the front end cover 13 and the.

The first heat dissipation mechanism 2 includes a first cover 21, a plurality of heat sinks 22, a water inlet pipe 23 and a water outlet pipe 24, the first cover 21 covers the outer side of the casing 11 and is fixedly connected to the casing 11, the plurality of heat sinks 22 are provided with a plurality of first covers 21 and are located, the plurality of heat sinks 22 are all provided on the outer surface of the casing 11 and are connected to the casing 11, and the water inlet pipe 23 and the water outlet pipe 24 are all fixed on the first cover 21 and are communicated with the first cover 21.

The second heat dissipation mechanism 3 includes a second cover 31, a fan 32, a first filter screen 33 and a second filter screen 34, the second cover 31 covers the outer surface of the rear end cover 14 and is fixedly connected to the rear end cover 14, one end of the motor shaft 12 is located in the second cover 31, the fan 32 is fixed at one end of the motor shaft 12, the first filter screen 33 is fixed at one end of the second cover 31 and faces the rear end cover 14, and the second filter screen 34 is fixed on the side wall of the second cover 31.

In the present embodiment, the housing 11 has a cylindrical structure, the front cover 13 and the rear cover 14 respectively enclose the front cover 13 and the rear cover 14 of the housing 11, and the motor shaft 12 is rotatably connected to the front cover 13 and the rear cover 14 through two bearings.

First heat dissipation mechanism 2 is used for dispelling the heat to casing 11, and first cover body 21 is the tubular structure, and fin 22 is used for deriving the heat on the casing 11, and fin 22 adopts copper metal material to make, and copper metal material's radiating effect is good, and inlet tube 23 and outlet pipe 24 are used for input coolant liquid and output coolant liquid respectively, the utility model discloses a lower water of coolant liquid adoption cost, the coolant liquid is at the first in-process that covers the internal flow of body 21, absorbs the heat on the fin 22 and exports.

The second heat dissipation mechanism 3 is used for dissipating heat of the rear end cover 14, the fan 32 is driven to rotate by the motor shaft 12, so that air cooling and heat dissipation are performed on the rear end cover 14, meanwhile, the air entering the second cover body 31 is filtered by the first filter screen 33 and the second filter screen 34, dust entering is reduced, and protection is provided for the fan 32.

Further, the heat dissipation fins 22 are of an annular structure, the heat dissipation fins 22 are sleeved on the casing 11, and the heat dissipation fins 22 are uniformly distributed at intervals along the length direction of the casing 11.

In the present embodiment, the plurality of fins 22 distributed at regular intervals can uniformly absorb heat and uniformly dissipate the heat, so that the heat dissipation is uniform and the heat dissipation effect is good.

Further, a surface of the rear cap 14 facing the first filter 33 is coated with a heat conductive silicone grease 35.

In this embodiment, the heat conducting silicone grease 35 on the rear end cover 14 can efficiently conduct the heat on the rear end cover 14, and then the heat is dissipated through the fan 32, so that the heat dissipation effect of the second heat dissipation mechanism 3 is improved.

Furthermore, a connecting piece 36 is arranged on the outer wall of the second cover 31, and the connecting piece 36 is fixedly connected with the second cover 31 and the first cover 21.

In the present embodiment, the connecting piece 36 is used to reinforce the first cover 21 and the second cover 31, so that the structures of the first cover 21 and the second cover 31 are more stable, and the connecting piece 36 can transmit heat on the first cover 21 and the second cover 31.

Further, the first filter 33 and the second filter 34 are made of copper metal.

In the present embodiment, by providing the first filter 33 and the second filter 34 made of copper metal, the first filter 33 and the second filter 34 themselves are more stable in structure and also have good heat conduction performance.

Further, a permanent magnet rotor 15 is installed at the center of the motor shaft 12, and a stator 36 is installed on the inner wall of the housing 11.

In the present embodiment, the permanent magnet rotor 15, the stator 36 and the motor shaft constitute a driving mechanism of the motor, and the operation is stable.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, and front end housing 13 and rear end cap 14 seal front end housing 13 and rear end cap 14 of casing 11 respectively, when the motor moves, first heat dissipation mechanism 2 dispels the heat to casing 11, heat on the casing 11 is derived to fin 22, inlet tube 23 and outlet pipe 24 are used for input coolant liquid and output coolant liquid respectively, the in-process that the coolant liquid flows in the first cover body 21, absorb and export the heat on the fin 22, second heat dissipation mechanism 3 provides the heat dissipation to rear end cap 14, fan 32 is rotatory through motor shaft 12 drive, thereby carry out the forced air cooling heat dissipation to rear end cap 14, first filter screen 33 and second filter screen 34 filter the air that gets into in the second cover body 31 simultaneously, reduce the dust and get into, provide the protection to fan 32.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A water-cooled permanent magnet synchronous motor is characterized in that: comprises a machine body mechanism (1), a first heat dissipation mechanism (2) and a second heat dissipation mechanism (3);

the machine body mechanism (1) comprises a machine shell (11), a motor shaft (12), a front end cover (13) and a rear end cover (14), wherein the front end cover (13) is positioned at one end of the machine shell (11) and fixedly connected with the machine shell (11), the rear end cover (14) is positioned at the other end of the machine shell (11) and fixedly connected with the machine shell (11), the motor shaft (12) is positioned in the machine shell (11) and two ends of the motor shaft respectively penetrate through the front end cover (13) and the rear end cover (14), and the motor shaft (12) is rotatably connected with the front end cover (13) and the rear end cover (14);

the first heat dissipation mechanism (2) comprises a first cover body (21), heat dissipation fins (22), a water inlet pipe (23) and a water outlet pipe (24), the first cover body (21) covers the outer side of the machine shell (11) and is fixedly connected with the machine shell (11), a plurality of heat dissipation fins (22) are arranged and are located in the first cover body (21), the heat dissipation fins (22) are arranged on the outer surface of the machine shell (11) and are connected with the machine shell (11), and the water inlet pipe (23) and the water outlet pipe (24) are fixed on the first cover body (21) and are communicated with the first cover body (21);

second heat dissipation mechanism (3) include the second cover body (31), fan (32), first filter screen (33) and second filter screen (34), the second cover body (31) cover is established on the surface of rear end cap (14) and fixed connection rear end cap (14), the one end of motor shaft (12) is located in the second cover body (31), fan (32) are fixed the one end of motor shaft (12), fixing of first filter screen (33) the one end of the second cover body (31) just faces rear end cap (14), second filter screen (34) are fixed on the lateral wall of the second cover body (31).

2. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: the radiating fins (22) are of an annular structure, the radiating fins (22) are sleeved on the machine shell (11), and the radiating fins (22) are evenly distributed at intervals along the length direction of the machine shell (11).

3. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: and the surface of one side of the rear end cover (14) facing the first filter screen (33) is coated with heat-conducting silicone grease (35).

4. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: a connecting piece (36) is arranged on the outer wall of the second cover body (31), and the connecting piece (36) is fixedly connected with the second cover body (31) and the first cover body (21).

5. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: the first filter screen (33) and the second filter screen (34) are both made of copper metal materials.

6. The water-cooled permanent magnet synchronous motor according to claim 1, characterized in that: the motor is characterized in that a permanent magnet rotor (15) is mounted at the center of the motor shaft (12), and a stator (36) is mounted on the inner wall of the shell (11).