CN215772771U

CN215772771U - Permanent magnet synchronous motor with water cooling structure

Info

Publication number: CN215772771U
Application number: CN202121196212.3U
Authority: CN
Inventors: 李国俊; 肖龙鑫
Original assignee: Shun Drive Power Technology Nantong Co ltd
Current assignee: Shun Drive Power Technology Nantong Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-02-08
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a permanent magnet synchronous motor with a water cooling structure, which comprises a shell and end covers arranged at two ends of the shell, wherein a space formed by the shell and the end covers is internally provided with a stator, a rotor and bearings fixed at two ends of the rotor, the shell is provided with a water inlet and a water outlet, and a radial cooling water channel is arranged in the shell. The utility model adopts a radial spiral water channel structure, which is used for reducing the flow resistance of water flow and reducing the power loss of the whole water pump; the position of a water nozzle of the motor can be adjusted according to the positions of a water inlet and a water outlet of the whole vehicle, and related parts of the whole vehicle can be optimally arranged; meanwhile, the high-voltage box of the new energy driving motor can be integrated on the shell together, the weight of the motor is reduced, the assembling procedures are reduced, and the manufacturing cost is reduced.

Description

Permanent magnet synchronous motor with water cooling structure

Technical Field

The utility model relates to the field of new energy drive motors, in particular to a permanent magnet synchronous motor with a water cooling structure.

Background

With the rapid development of the new energy automobile industry, a new round of motor innovation is caused, and the driving motor of the new energy automobile is of great importance as the power heart of the automobile. The cooling system of the electric machine directly affects the performance of the electric machine and thus the vehicle performance. The cooling methods of the motor include air cooling, water cooling, oil cooling and the like, and the water cooling structure is most economical and common.

The existing water-cooling machine shell structure of the motor is mostly axial spiral, the structure has too much turning of a water channel, the flow resistance of circulating water is larger, and a reinforcing rib is required to be separated from a water inlet and a water outlet. Because the flow resistance of the axial cooling water channel is large, the power loss of the whole vehicle water pump can be increased, if the water inlet and the water outlet are separated by a reinforcing rib, the arrangement of the water inlet and the water outlet of the whole vehicle is limited, and the flexibility is weak, so that the product popularization is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a permanent magnet synchronous motor with a water cooling structure, wherein a water channel of a motor shell is a radial spiral.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a water-cooling structure's PMSM, includes a casing and establishes the end cover at casing both ends, be provided with stator, rotor in the space that casing and end cover are constituteed and be fixed in the bearing at rotor both ends, the casing is equipped with water inlet and delivery port, the inside radial cooling water course that is provided with of casing.

Preferably, the cooling water channel is formed by winding a water channel partition plate arranged in the machine shell along the radial direction of the machine shell, and the water channel partition plate is wound for a plurality of circles along the inner wall of the machine shell.

Preferably, one end of the cooling water channel is communicated with the water inlet, and the other end of the cooling water channel is communicated with the water outlet.

Preferably, the water inlet and the water outlet are both connected with a water nozzle.

Preferably, a high-pressure box is arranged at the top of the machine shell, and the high-pressure box and the machine shell are integrally cast.

Preferably, the end cover is provided with a plurality of lightening holes.

The utility model has the beneficial effects that: the radial spiral water channel structure is adopted to reduce the flow resistance of water flow and reduce the power loss of the whole vehicle water pump; the position of a water nozzle of the motor can be adjusted according to the positions of a water inlet and a water outlet of the whole vehicle, and related parts of the whole vehicle can be optimally arranged; meanwhile, the high-voltage box of the new energy driving motor can be integrated on the shell together, the weight of the motor is reduced, the assembling procedures are reduced, and the manufacturing cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a permanent magnet synchronous motor with a water-cooling structure according to the present invention;

fig. 2 is a right side view of a permanent magnet synchronous motor of a water cooling structure according to the present invention;

FIG. 3 is a schematic structural view of the housing of FIG. 1;

FIG. 4 is a schematic diagram of a cooling channel according to the present invention;

wherein: the cooling water cooling device comprises a machine shell 10, an end cover 12, a rotor 14, a cooling water channel 16, a water inlet 18, a water outlet 20, a water nozzle 22, a water channel partition plate 24, a high-pressure box 26 and a lightening hole 28.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

The motor comprises a shell and an end cover, wherein a stator, a rotor and bearings fixed at two ends of the rotor are arranged in a space formed by the shell and the end cover, a water inlet and a water outlet are formed in the shell, and a radial cooling water channel is arranged in the shell.

As shown in fig. 1, a permanent magnet synchronous motor with a water-cooling structure includes a casing 10 and an end cover 12, where the end cover 12 includes a front end cover and a rear end cover, which are respectively disposed at two ends of the casing 10. A stator (not shown), a rotor 14, and two bearings (not shown) are provided in a space formed by the casing 10 and the end cover 12. The rotor 14 is connected with a front end cover and a rear end cover, and two bearings are fixed at two ends of the rotor 14. The inside of the casing 10 is radially provided with a spiral cooling water channel 16 for reducing the flow resistance of water flow and reducing the power loss of the water pump of the whole vehicle.

Further, as shown in fig. 2 to 3, a water inlet 18 and a water outlet 20 are formed in the casing 10, one end of the cooling water channel 16 is communicated with the water inlet 18, the other end of the cooling water channel is communicated with the water outlet 20, and the water inlet 18 and the water outlet 20 are both connected with a water nozzle 22. The position of the water nozzle 22 can be adjusted according to the position of a water inlet and a water outlet of the whole vehicle, and related parts of the whole vehicle can be optimally arranged.

Further, as shown in fig. 4, the cooling water channel 16 is formed by winding a water channel partition plate 24 disposed inside the casing 10 in a radial direction of the casing 10, and the water channel partition plate 24 is wound several times along an inner wall of the casing 10. The structure adopts the design of a radial spiral water channel, thereby greatly reducing the flow resistance of water flow and reducing the power loss of the water pump.

Further, the top of the casing 10 is provided with the high-voltage box 26, the high-voltage box 26 and the casing 10 are integrally cast, the assembly process of the motor is reduced, and the manufacturing cost is reduced. The end cover 12 is provided with a plurality of lightening holes 28, so that the weight of the motor is lightened.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a water-cooling structure's PMSM, includes a casing and establishes the end cover at casing both ends, its characterized in that: the motor comprises a shell and an end cover, wherein a stator, a rotor and bearings fixed at two ends of the rotor are arranged in a space formed by the shell and the end cover, the shell is provided with a water inlet and a water outlet, and a radial cooling water channel is arranged in the shell.

2. The permanent magnet synchronous motor with the water-cooling structure according to claim 1, characterized in that: the cooling water channel is a radial spiral water channel.

3. The permanent magnet synchronous motor with the water-cooling structure according to claim 2, characterized in that: the cooling water channel is formed by winding a water channel partition plate arranged in the shell along the radial direction of the shell, and the water channel partition plate is wound for a plurality of circles along the inner wall of the shell.

4. The permanent magnet synchronous motor with the water-cooling structure according to claim 1, characterized in that: one end of the cooling water channel is communicated with the water inlet, and the other end of the cooling water channel is communicated with the water outlet.

5. The permanent magnet synchronous motor with the water-cooling structure according to claim 3, wherein: the water inlet and the water outlet are both connected with a water nozzle.

6. The permanent magnet synchronous motor with the water-cooling structure according to claim 3, wherein: the top of the machine shell is provided with a high-pressure box, and the high-pressure box and the machine shell are integrally cast.

7. The permanent magnet synchronous motor with the water-cooling structure according to claim 1, characterized in that: the end cover is provided with a plurality of lightening holes.