CN111193342A

CN111193342A - Motor and rotor pressing plate thereof

Info

Publication number: CN111193342A
Application number: CN202010063774.4A
Authority: CN
Inventors: 周茜茜; 于冰; 尤磊; 朱扣成; 李谟旺; 董小艳; 程翔
Original assignee: CSR Zhuzhou Electric Co Ltd
Current assignee: CRRC Zhuzhou Electric Co Ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-05-22

Abstract

The invention discloses a motor and a rotor pressing plate thereof, which comprises a pressing plate body (1) and is characterized by also comprising: the blade (2) is used for blowing and throwing cooling oil sprayed on the pressing plate body (1) to the end part of the winding, and the blade (2) is fixedly installed on the pressing plate body (1). Because the motor during operation, rotor pressing plate can rotate along with the rotor, consequently, rotates with clamp plate body fixed mounting's blade synchronous, blows to cooling oil at the rotation in-process and gets rid of, makes cooling oil get rid of to the winding tip under the effect of blade to improve the uneven problem of temperature rise of winding tip.

Description

Motor and rotor pressing plate thereof

Technical Field

The invention relates to the technical field of motors, in particular to a motor and a rotor pressing plate thereof.

Background

The importance of thermal management is increasingly prominent to meet the requirements of small size, high power and large torque of new energy motors. In order to enable the temperature rise of the motor to be within a reasonable range, the research on a cooling structure is more and more refined.

At present, an oil-cooled motor of a new energy automobile is one of the key directions of research. In the prior art, most of oil-cooled motors cool the end part of the winding by using two aspects of cooling oil nozzle diffusion and gravity sinking. Because the fuel sprayer sets up in the winding top mostly, because the little viscosity of cooling oil density is big, it is less to receive the influence of gravity under the high rotational speed condition, and it is great to receive the centrifugal force influence, leads to the cooling oil can not effectively cool off the winding lower extreme for the uneven degree of winding tip temperature is higher.

Therefore, how to ensure that the cooling oil effectively cools the winding and make the winding temperature uniform is a technical problem to be solved urgently in the field.

Disclosure of Invention

In view of this, the present invention provides a rotor pressing plate, which ensures that the cooling oil effectively cools the winding, so that the winding temperature is uniform. Another object of the present invention is to provide a motor having the rotor pressing plate.

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

a rotor platen, comprising a platen body, further comprising:

and the blades are used for blowing and throwing the cooling oil sprayed on the pressing plate body to the end part of the winding, and the blades are fixedly arranged on the pressing plate body.

Preferably, in the rotor pressure plate, the blades and the pressure plate body are of an integral structure.

Preferably, in the rotor pressing plate, the pressing plate body is an annular plate, and the distances from the blades to the inner circle and the outer circle of the pressing plate body are both 2mm-3 mm.

Preferably, in the rotor pressing plate, the blades are vertically installed on the pressing plate body, and the height of the blades is gradually reduced from one end close to the outer circle of the pressing plate body to one end close to the inner circle of the pressing plate body.

Preferably, in the rotor pressing plate, an edge of one side of the blade, which is close to the outer circle of the pressing plate body, is chamfered.

Preferably, in the rotor pressing plate, the thickness of the pressing plate body is 2mm to 2.5mm, and the thickness of the blade is 2mm to 3 mm.

Preferably, in the rotor pressure plate, the blades (2) are straight blades or curved blades.

Preferably, in the rotor pressure plate, the blades (2) are arranged obliquely with respect to the rotation axis.

A motor comprises a rotor pressing plate, wherein the rotor pressing plate is the rotor pressing plate.

According to the technical scheme, the rotor pressing plate rotates along with the rotor when the motor works, so that the rotor pressing plate and the blades fixedly arranged on the pressing plate body rotate synchronously, cooling oil is blown and thrown in the rotating process, the cooling oil is thrown to the end portion of the winding under the action of the blades, and the problem of uneven temperature rise of the end portion of the winding is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front view of a rotor platen as disclosed in an embodiment of the present invention;

FIG. 2 is a side view of a rotor platen as disclosed in an embodiment of the present invention;

FIG. 3 is a schematic view of a rotor blade of a rotor pressure plate disclosed in an embodiment of the present invention in a tilted curved configuration;

FIG. 4 is a schematic structural view of a rotor blade of a rotor pressure plate disclosed in an embodiment of the present invention, the blade being bent obliquely in another direction;

FIG. 5 is a schematic view of a straight blade pitch configuration of a rotor platen as disclosed in an embodiment of the present invention;

fig. 6 is a schematic structural view of the rotor pressing plate disclosed in the embodiment of the present invention in which the straight blades are inclined in another direction.

Detailed Description

In view of this, the core of the present invention is to disclose a rotor pressing plate, which ensures that the cooling oil effectively cools the winding, so that the winding temperature is uniform. In addition, the invention also discloses a motor with the rotor pressing plate.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, the present invention discloses a rotor pressing plate, which comprises a pressing plate body 1, and further comprises: and the blades 2 are used for blowing and throwing the cooling oil sprayed on the pressure plate body 1 to the winding end part, and the blades 2 are fixedly arranged on the pressure plate body 1. Because the motor during operation, rotor pressing plate can rotate along with the rotor, consequently, rotate with 1 fixed mounting's of clamp plate body blade 2 synchronous, blow at the rotation in-process and get rid of the cooling oil, make the cooling oil get rid of to the winding tip under the effect of blade 2 to improve the uneven problem of temperature rise of winding tip.

In a specific embodiment, the blade 2 and the platen body 1 are integrated, and specifically, the blade 2 can be cast on the platen body 1 when the platen body 1 is processed, so as to improve the connection strength between the blade 2 and the platen body 1. In order to reduce the influence on the existing processing die, the blade 2 can be welded on the pressure plate body 1. The connection mode of the blades 2 and the pressure plate body 1 can be set according to different requirements and is within the protection range.

The pressure plate body 1 in the application is an annular plate, and the blades 2 are specifically arranged at a distance of 2mm-3mm from the inner circle and the outer circle of the pressure plate body 1. The specific installation position of the blade 2 can be set according to different requirements, and the height of the blade 2 is set on the premise of not influencing the installation and work of other parts and ensuring the blowing and throwing of cooling oil, so that specific limitation is not made.

Blade 2 in this application is installed perpendicularly on clamp plate body 1 to the height of blade 2 is reduced gradually to the one end of the interior circle that is close to clamp plate body 1 by the one end of the excircle that is close to clamp plate body 1, and this blade 2 is close to the one end of the interior circle of clamp plate body 1 by the inclined plane promptly, so sets up, can lead to the wind current, in addition, still can reduce blockking of fan blade to coolant oil. The specific inclination angle can be set according to different requirements.

In a preferred embodiment, the edge of the blade 2 on the side close to the outer circle of the pressure plate body 1 is provided with a chamfer, and after the chamfer processing is performed on the edge of the blade 2, the blade 2 can be prevented from generating an acute angle, so that the safety performance is improved, and the wind flow can be guided. In practice, the blade 2 may also be a straight blade, and the shape and size of the blade 2 may be selected according to different needs.

The thickness of the pressure plate body 1 in the application is 2mm-2.5mm, and the thickness of the blade 2 is 2mm-3 mm. The thickness of the pressure plate body 1 and the blade 2 can be set according to different requirements and are within the protection range. Specifically, the number of the blades 2 is 5-11, and the blades are uniformly arranged along the circumferential direction of the pressure plate body 1.

As shown in fig. 3-6, in the specific embodiment, the blade 2 is a straight blade or a curved blade, and the shape and size of the blade 2 can be selected according to actual needs. When being installed, the blades 2 can be arranged obliquely relative to the rotating shaft, specifically, the blades can be inclined forwards or backwards, namely clockwise or anticlockwise, and also can be arranged vertically to the rotating shaft, and the blades are all within the protection range.

In addition, the application also discloses a motor, which comprises a rotor pressing plate, wherein the rotor pressing plate is the rotor pressing plate disclosed in the embodiment, so that the motor with the rotor pressing plate also has all the technical effects, and the details are not repeated herein.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotor pressure plate, includes pressure plate body (1), its characterized in that still includes:

the blade (2) is used for blowing and throwing cooling oil sprayed on the pressing plate body (1) to the end part of the winding, and the blade (2) is fixedly installed on the pressing plate body (1).

2. Rotor pressure plate according to claim 1, characterized in that the blades (2) are of one-piece construction with the pressure plate body (1).

3. The rotor press plate according to claim 1, characterized in that the press plate body (1) is an annular plate and the distance of the blades (2) to the inner and outer circles of the press plate body (1) is 2-3 mm.

4. The rotor pressure plate according to claim 3, characterized in that the blades (2) are vertically installed on the pressure plate body (1), and the height of the blades (2) is gradually reduced from one end near the outer circle of the pressure plate body (1) to one end near the inner circle of the pressure plate body (1).

5. Rotor pressure plate according to claim 4, characterized in that the edge of the side of the blade (2) close to the outer circle of the pressure plate body (1) has a chamfer.

6. Rotor press plate according to any of claims 1-5, characterized in that the thickness of the press plate body (1) is 2-2.5 mm and the thickness of the blades (2) is 2-3 mm.

7. Rotor press plate according to any of claims 1-5, characterized in that the blades (2) are straight blades or curved blades.

8. Rotor pressure plate according to any of claims 1-5, characterized in that the blades (2) are arranged obliquely with respect to the axis of rotation.

9. An electrical machine comprising a rotor press plate, wherein the rotor press plate is according to any one of claims 1-8.