CN218549650U

CN218549650U - Oil spraying ring and oil cooling motor

Info

Publication number: CN218549650U
Application number: CN202222301710.0U
Authority: CN
Inventors: 李节宝; 李悦姣; 李纪强; 王迪; 陈孝督
Original assignee: Weilai Power Technology Hefei Co Ltd
Current assignee: Weilai Power Technology Hefei Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-02-28
Anticipated expiration: 2032-08-31

Abstract

The application discloses spout oil ring and oil-cooled motor. The oil injection ring is provided with an oil inlet through which cooling oil can flow from the outer surface of the oil injection ring to the inner surface of the oil injection ring, and the outer surface of the oil injection ring is provided with a baffle plate for at least partially obstructing the movement of the cooling oil in the outer surface. According to the oil spout ring of this application can strengthen the cooling effect of oil-cooled motor.

Description

Oil spraying ring and oil cooling motor

Technical Field

The application relates to the field of motors, in particular to an oil injection ring and an oil cooling motor with the same.

Background

With the increasing demands of applications such as new energy vehicles on motor power density and motor efficiency, the new energy vehicle driving motor is required to have higher peak torque and motor efficiency under a smaller volume. At present, a cooling system of a vehicle driving motor mainly has two types of oil cooling and water cooling, and the oil cooling system has better cooling performance than the water cooling system, so the cooling system is widely applied to a high-power-density motor system. The general motor oil cooling system is mainly formed by combining an oil ring, an oil pipe, an oil passage and the like, wherein the cooling of the end part of the motor stator is mainly realized by oil injection of the oil ring or the oil pipe.

In the actual use process of the whole vehicle, the flow and the temperature of the cooling oil can be greatly changed under the influence of different environmental temperatures and loads. When the temperature of the cooling oil is low, the viscosity of the oil becomes high, and the fluidity is poor relative to that at high temperature; when the flow of cooling oil is lower, because the inside pressure of oil pipe is not enough, the phenomenon of fluid wall built-up on the oil pipe surface often can appear, leads to fluid can't flow to the winding surface, influences the cooling effect.

Therefore, it is necessary to sufficiently study the existing problems or disadvantages including those described above so as to improve them.

SUMMERY OF THE UTILITY MODEL

The application provides a spout oil ring, its cooling effect that can strengthen the cold motor of oil.

According to one aspect of the application, an oil injection ring is provided, in which an oil inlet is provided through which cooling oil can flow from an outer surface of the oil injection ring to an inner surface of the oil injection ring, and a baffle is provided at the outer surface of the oil injection ring for at least partially hindering the movement of the cooling oil in the outer surface.

According to the oil spout ring that an aspect of this application provided be equipped with a plurality of oil intakes on the oil spout ring, every oil intake all disposes at least one separation blade.

According to the oil spout ring that an aspect of this application provided, respectively be equipped with a separation blade in the both sides of every oil inlet.

According to the oil spout ring set forth in one aspect of the present application, the baffle plate is provided to extend parallel to a center line of the oil spout ring.

According to the oil spout ring set forth in one aspect of the present application, the baffle plate continuously extends from one side of the oil spout ring to the other side.

According to the oil injection ring provided by one aspect of the application, an oil discharge opening is formed in the oil injection ring, and cooling oil in the inner surface of the oil injection ring can flow out through the oil discharge opening.

According to the oil spout ring that an aspect of this application provided unload the both sides of hydraulic fluid port respectively and be equipped with a separation blade.

In addition, this application proposes an oil-cooled motor with such oil spout ring, oil-cooled motor includes casing, stator and sets up the oil spout ring between the casing with the stator be equipped with the oil pocket that is used for holding the cooling oil between the casing with spout the oil ring, the cooling oil that holds in the oil pocket can pass through the oil inlet flow direction to the stator.

According to the oil-cooled motor provided by one aspect of the application, the oil injection ring forms an oil cavity for containing cooling oil through cooperation with the shell.

According to the oil-cooled motor proposed by one aspect of the present application, the baffle plate at least partially fills the oil chamber in a radial direction of the oil spray ring.

The beneficial effect of this application includes: through the separation blade that sets up at the surface of spouting oil ring, at least partial hindrance cooling oil is in the removal of surface, avoids the wall built-up phenomenon of cooling oil under the low temperature or low flow condition effectively to strengthen the cooling effect of oil-cooled motor.

Drawings

The disclosure of the present application is explained with reference to the drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the application. In the drawings, like reference numerals are used to refer to like parts, unless otherwise specified. Wherein:

fig. 1 shows a schematic structural view of an oil injection ring according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the fuel injection ring of FIG. 1 from another perspective;

fig. 3 schematically shows a cross section of the spray ring of fig. 1 in a direction perpendicular to its centre line.

Detailed Description

It is easily understood that according to the technical solutions of the present application, a person having ordinary skill in the art can propose various alternative structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are only illustrative of the technical solutions of the present application, and should not be considered as all of the present application or as limitations or restrictions on the technical solutions of the present application.

An oil spray ring according to an embodiment of the present application, shown in connection with fig. 1, 2 and 3, is provided with

oil inlets

11, 12 in the oil spray ring, through which cooling oil can flow from the outer surface of the oil spray ring to the inner surface of the oil spray ring, and with baffles 21 at the outer surface of the oil spray ring for at least partially hindering the movement of the cooling oil in the outer surface. A plurality of oil inlets may be provided above the oil spray ring, as shown with reference to fig. 1. One possible flow of cooling oil at the spray ring is illustrated with reference to fig. 3, in which the arrows show the direction of flow of the cooling oil.

In the oil injection ring according to the embodiment, the blocking piece arranged on the outer surface of the oil injection ring at least partially obstructs the movement of the cooling oil in the outer surface, so that the oil collecting and blocking effects are achieved, the wall hanging phenomenon of the cooling oil under the condition of low temperature or low flow is effectively avoided, the cooling oil can flow from the oil inlet to the inner surface of the oil injection ring as much as possible, the cooling effect of the oil-cooled motor is enhanced, and the problem of insufficient cooling caused by the fact that the cooling oil flows down the wall under the condition of low flow/low temperature is solved.

In this embodiment, a plurality of oil inlets are arranged on the oil injection ring, and each oil inlet is provided with at least one baffle. Although each oil inlet is provided with a baffle, this does not mean that one baffle is only configured for one oil inlet, and one baffle may be configured for a plurality of oil inlets, for example, one baffle may be configured for two adjacent oil inlets. Through such a mode, all there is the separation blade to play the effect of gathering oil, fender oil near every oil inlet, and the extension cooling oil collects the time near the oil inlet, is favorable to more cooling oil to flow to the internal surface of spouting the oil ring from the oil inlet. Furthermore, two sides of each oil inlet are respectively provided with a baffle plate, so that the effects of collecting and blocking oil are enhanced. The plurality of baffle plates are, for example, grid-shaped on the outer surface of the spray ring.

In the embodiment shown in the figures, the baffle is arranged to extend parallel to the centre line of the spray ring. In other words, the outer surface of the spray ring forms a cylinder, and the extension direction of the baffle is parallel to the center line (axis) of the cylinder. In this way, the movement of the cooling oil in the surface of the spray ring in a direction perpendicular to the centre line of the spray ring is effectively impeded, i.e. the situation in which the cooling oil flows away bypassing the oil inlet is reduced.

The cross section of each baffle plate in the direction perpendicular to the central line of the oil injection ring can be various, such as a rectangle (shown in reference to fig. 3), a triangle, a trapezoid, an irregular figure and the like, which can be determined according to specific conditions.

The baffle plate may extend continuously from one side of the spray ring to the other side. As shown in fig. 1, the baffle plate continuously extends from the upper side of the spray ring to the lower side of the spray ring. Through such mode, the separation blade has better collection oil, keeps off oily effect. Of course, the baffle may not extend completely from one side of the spray ring to the other (e.g., extend only partially), or the baffle may extend discontinuously from one side of the spray ring to the other.

Referring to fig. 2, an oil discharge port 3 through which the cooling oil in the inner surface of the oil spray ring can flow out is provided in the oil spray ring. The cooling oil entering the inner surface of the oil spray ring from the oil inlet may be gathered at a lower portion of the inner surface of the oil spray ring due to gravity after the cooling is completed, and the cooling oil can be smoothly discharged through the oil discharge port disposed below the oil spray ring.

Further, two sides of the oil discharge port are respectively provided with a baffle 22. Through the separation blade that sets up, can hinder the coolant oil of separation blade top from spouting the below of oil ring and flowing away under the condition that the internal surface of oil ring is spouted in the oil inlet entering not.

The present application further encompasses an oil-cooled electric machine with an injection ring of any one or more of the embodiments described above. The oil-cooled motor comprises a shell, a stator and an oil injection ring arranged between the shell and the stator, wherein an oil cavity used for containing cooling oil is arranged between the shell and the oil injection ring, and the cooling oil contained in the oil cavity can flow to the stator through the oil inlet.

In the oil-cooled motor according to the embodiment, the baffle plate arranged on the outer surface of the oil injection ring facing the shell at least partially obstructs the movement of the cooling oil in the outer surface, so that the oil collecting and blocking effects are achieved, the wall hanging phenomenon of the cooling oil under the condition of low temperature or low flow rate is effectively avoided, the cooling oil can flow from the oil inlet to the inner surface of the oil injection ring as much as possible and therefore flows to the stator, and the cooling effect of the oil-cooled motor, particularly the stator, is enhanced.

Illustratively, the oil spray ring forms an oil chamber for receiving cooling oil by cooperation with the housing. The baffle plate at least partially fills the oil chamber in a radial direction of the oil spray ring. The radial direction refers to the generally upward direction of the flap 21 in fig. 3. For example, the flaps 21 near one oil inlet 11 partially fill the oil chamber in the radial direction of the oil spray ring, and the cooling oil can flow from above over the flaps 21 to the other oil inlets, thereby performing multi-point oil spray and preventing excessive pressure. As another example, the dam 22 near the oil discharge port 3 completely fills the oil cavity in the radial direction of the oil spray ring, preventing cooling oil from bypassing the oil inlet into the area below the oil discharge port 3 to flow away.

Other technical features and technical effects of the oil-cooled motor correspond to the foregoing description, and are not described in detail herein.

The technical scope of the present application is not limited to the contents in the above description, and those skilled in the art can make various changes and modifications to the above embodiments without departing from the technical spirit of the present application, and these changes and modifications should fall within the protective scope of the present application.

Claims

1. An injection ring, characterized in that an oil inlet is provided in the injection ring, through which oil coolant can flow from the outer surface of the injection ring to the inner surface of the injection ring, and that a baffle is provided at the outer surface of the injection ring for at least partially hindering the movement of the oil coolant in the outer surface.

2. The spray ring of claim 1, wherein a plurality of oil inlets are provided on the spray ring, each oil inlet being configured with at least one baffle.

3. The spray ring of claim 2, wherein one baffle is disposed on each side of each oil inlet.

4. The spray ring of claim 1, wherein said baffle plate is disposed to extend parallel to a centerline of said spray ring.

5. The spray ring of claim 1, wherein said baffle extends continuously from one side of said spray ring to the other.

6. The spray ring of claim 1, wherein a fuel discharge port is provided in the spray ring through which cooling oil in an inner surface of the spray ring can flow out.

7. The spray ring of claim 6, wherein a baffle is disposed on each side of the oil discharge port.

8. An oil-cooled motor with an oil spray ring according to any one of claims 1 to 7, characterized in that the oil-cooled motor comprises a housing, a stator and an oil spray ring arranged between the housing and the stator, an oil cavity for accommodating cooling oil is arranged between the housing and the oil spray ring, and the cooling oil accommodated in the oil cavity can flow to the stator through an oil inlet.

9. The oil-cooled motor of claim 8, wherein the oil spray ring forms an oil cavity for receiving cooling oil by cooperation with the housing.

10. The oil-cooled machine of claim 9, wherein the dam at least partially fills the oil cavity in a radial direction of the oil spray ring.