Oil injection ring, stator, motor and vehicle

Abstract

The invention discloses an oil injection ring, a stator, a motor and a vehicle, the oil injection ring comprises a ring body and an outer check ring extending outwards in the radial direction of the ring body, a first step part is formed between the ring body and the outer check ring, and an oil storage cavity is formed between the outer check ring and the first step part; an oil injection cavity communicated with the oil storage cavity is formed in the ring body, a plurality of oil injection holes axially penetrating through the ring body are formed in the oil injection cavity, and the oil injection holes are formed in the circumferential direction of the ring body; the ring body is further provided with a plurality of winding receding grooves axially penetrating through the ring body, the winding receding grooves are located in the side, facing the circle center in the radial direction, of the oil injection cavity, and the winding receding grooves are arranged in the circumferential direction of the ring body. The oil injection rings are installed at the two ends of the stator iron core firstly, then the winding is installed on the stator iron core and the oil injection rings, and cooling oil flows into the oil injection cavities from the stator iron core through the oil storage cavities and is sprayed to the ends of the winding through the oil injection holes. According to the invention, the oil injection ring is integrated on the stator iron core, the three-phase line does not interfere with the oil injection ring, and the stator structure is suitable for three-phase line radial outgoing.

Description

Technical Field

[0001] The present application relates to the technical field of motor cooling, and in particular to an oil injection ring, a stator, a motor and a vehicle. Background Art

[0002] Existing stator oil cooling solutions often utilize an oil spray ring installed between the motor housing and the windings to spray the windings for cooling. Because the oil spray ring is located at the axial end of the stator winding, the three-phase wires of the windings can only be routed axially. With radial routing, the three-phase wires interfere with the oil spray ring, making it impossible to install the oil spray ring structure and implement oil spray cooling at the outlet. Summary of the Invention

[0003] The purpose of the present application is to overcome the deficiency in the prior art that the oil spray ring for spraying the winding is not suitable for the winding with radial outlet, and to provide an oil spray ring, a stator, a motor and a vehicle.

[0004] The technical solution of the present application provides an oil injection ring, comprising a ring body and an outer retaining ring extending radially outward from the ring body, a first step portion being formed between the ring body and the outer retaining ring, and an oil storage cavity being formed between the outer retaining ring and the first step portion;

[0005] The ring body is provided with an oil injection cavity connected to the oil storage cavity, and the oil injection cavity is provided with a plurality of oil injection holes axially penetrating the ring body, and the plurality of oil injection holes are arranged along the circumference of the ring body;

[0006] The ring body is further provided with a plurality of winding avoidance grooves which axially penetrate the ring body. The winding avoidance grooves are located on the radial side of the oil injection cavity facing the center of the circle, and the plurality of winding avoidance grooves are arranged along the circumference of the ring body.

[0007] Furthermore, the oil injection ring is also provided with a positioning sealing ring for cooperating with the stator core;

[0008] The positioning sealing ring extends axially from the inner peripheral wall of the ring body.

[0009] Furthermore, a plurality of positioning bosses for cooperating with the stator core slots are provided on the outer peripheral surface of the positioning sealing ring, and the plurality of positioning bosses are arranged along the circumference of the positioning sealing ring.

[0010] Furthermore, a sealing groove for installing a sealing ring is provided on the outer peripheral wall of the outer retaining ring, and the sealing groove is arranged along the circumference of the outer retaining ring.

[0011] Further, the ring body includes an inner ring body and an outer ring body extending radially outward from the inner ring body, the oil injection cavity includes a first oil injection cavity, and the oil injection hole includes a first oil injection hole;

[0012] A second step portion is formed between the inner ring body and the outer ring body, the first oil injection cavity is formed between the outer ring body and the second step portion, the first oil injection hole is opened on the outer ring body, and the winding avoidance groove is opened on the inner ring body.

[0013] Furthermore, the oil spray chamber further includes a second oil spray chamber, and the oil spray hole further includes a second oil spray hole;

[0014] The inner ring body is provided with a plurality of second oil spray chambers, each of which is communicated with the first oil spray chamber, and each of which is provided with at least one second oil spray hole.

[0015] Furthermore, a second oil spray chamber is provided between two adjacent winding avoidance grooves.

[0016] Furthermore, a plurality of the oil spraying cavities are evenly arranged on the circumference of the ring body, and each of the oil spraying cavities is provided with at least one oil spraying hole.

[0017] The technical solution of the present application further provides a stator, comprising a stator core, an oil spray ring, and a winding, wherein the oil spray ring is the aforementioned oil spray ring, the stator core is provided with a cooling oil channel and a winding mounting groove, the cooling oil channel being provided on the outer circumferential surface of the stator core, each of the winding mounting grooves axially penetrating the stator core, and a plurality of the winding mounting grooves being arranged along the circumference of the stator core;

[0018] An oil spray ring is installed at each axial end of the stator core, and the cooling oil channel is connected to the oil storage chambers of the two oil spray rings;

[0019] The winding installation grooves are arranged in a one-to-one correspondence with the winding avoidance grooves of the oil injection ring, and the windings are installed in the winding installation grooves and the winding avoidance grooves.

[0020] The technical solution of the present application further provides a motor, comprising a main housing and a stator, wherein the stator is the aforementioned stator;

[0021] The main housing is provided with an installation cavity, the stator is installed in the installation cavity, and the side wall of the main housing seals the oil storage cavity;

[0022] The main housing is provided with an oil inlet, which is communicated with the cooling oil channel.

[0023] Furthermore, it also includes a front housing for outputting a line, the front housing for outputting a line is connected to one axial end of the main housing and is used to close the installation cavity;

[0024] A three-phase outlet for allowing the three-phase wiring of the winding to extend out is provided on the side wall of the front outlet housing.

[0025] Furthermore, the outlet front housing is provided with an axially extending positioning piece, and the positioning piece extends into the installation cavity and abuts against the oil injection ring.

[0026] The technical solution of the present application also provides a vehicle, comprising the aforementioned fuel injection ring, and / or stator, and / or motor.

[0027] The above technical solution has the following beneficial effects:

[0028] An oil storage chamber is formed between an outer retaining ring and the first step portion on the outer edge of the oil injection ring, an oil injection chamber is provided on the radial inner side of the oil storage chamber, an oil injection hole is provided in the oil injection chamber for oil injection, and a winding avoidance groove is also provided on the radial inner side of the oil injection chamber. The oil injection ring is first installed on both ends of the stator core, and then the winding is installed on the stator core and the oil injection ring. The cooling oil flows from the stator core through the oil storage chamber to the oil injection chamber and is sprayed onto the end of the winding from the oil injection hole; the present application integrates the oil injection ring into the stator core, and the three-phase line will not interfere with the oil injection ring, and the stator structure with radial and axial three-phase line outlets can be applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The disclosure of this application will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings:

[0030] Figure 1 This is a schematic structural diagram of the fuel injection ring at a first angle according to the first embodiment of the present application;

[0031] Figure 2 This is a schematic structural diagram of the fuel injection ring according to the first embodiment of the present application at a second angle;

[0032] Figure 3 This is a schematic structural diagram of the oil injection ring according to the second embodiment of the present application;

[0033] Figure 4 This is a partial structural diagram of the oil injection ring of the second embodiment of the present application;

[0034] Figure 5 Schematic diagram of the structure of the fuel injection ring of the third embodiment of the present application;

[0035] Figure 6 This is a partial structural diagram of the fuel injection ring of the third embodiment of the present application;

[0036] Figure 7 This is one of the cross-sectional schematic diagrams of the fuel injection ring of the third embodiment of the present application;

[0037] Figure 8 This is the second cross-sectional schematic diagram of the fuel injection ring of the third embodiment of the present application;

[0038] Figure 9 1 is a schematic structural diagram of a stator according to a fourth embodiment of the present application;

[0039] Figure 10 1 is a schematic diagram of the partial structure of the stator of the fourth embodiment of the present application;

[0040] Figure 11 is a cross-sectional schematic diagram of the motor according to the fifth embodiment of the present application;

[0041] Figure 12 It is a structural schematic diagram of the front housing of the motor of Example 5 of the present application.

[0042] Reference table of accompanying symbols:

[0043] Stator 1:

[0044] Oil injection ring 01: ring body 11, inner ring body 111, outer ring body 112, second step 113, outer retaining ring 12, oil storage chamber 121, sealing groove 122, first step 13, oil injection chamber 14, first oil injection chamber 141, second oil injection chamber 142, oil injection hole 15, first oil injection hole 151, second oil injection hole 152, oil outlet 1501, oil inlet 1502, winding avoidance groove 16, positioning sealing ring 17, positioning boss 171;

[0045] Stator core 03: stator core slot 31, cooling oil channel 32, circumferential oil channel 321, axial oil channel 322;

[0046] Sealing ring 02, winding 04;

[0047] Main shell 2:

[0048] Oil inlet 05, first flange 08;

[0049] Outlet front housing 3:

[0050] Three-wire outlet 06, positioning piece 07, second flange 09. DETAILED DESCRIPTION

[0051] The specific implementation of this application is further described below with reference to the accompanying drawings.

[0052] It is easy to understand that according to the technical solution of this application, a variety of structural methods and implementation methods can be replaced with each other by those skilled in the art without changing the essential spirit of this application. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of this application and should not be regarded as the entire application or as a limitation or restriction of the technical solution of the application.

[0053] In this specification, directional terms such as "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" are defined relative to the configurations shown in the accompanying drawings. These terms are relative and may vary depending on the device's location or usage. Therefore, these and other directional terms should not be construed as restrictive. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0055] Example 1:

[0056] The fuel injection ring 01 in the embodiment of the present application is as follows: Figure 1 、 2 As shown, it includes a ring body 11 and an outer retaining ring 12 extending radially outward from the ring body 11, a first step portion 13 is formed between the ring body 11 and the outer retaining ring 12, and an oil storage cavity 121 is formed between the outer retaining ring 12 and the first step portion 13;

[0057] The ring body 11 is provided with an oil injection cavity 14 communicating with the oil storage cavity 121. The oil injection cavity 14 is provided with a plurality of oil injection holes 15 axially penetrating the ring body 11. The plurality of oil injection holes 15 are arranged along the circumference of the ring body 11.

[0058] The ring body 11 is further provided with a plurality of winding avoidance grooves 16 axially penetrating the ring body 11 . The winding avoidance grooves 16 are located radially inward of the oil injection cavity 121 . The plurality of winding avoidance grooves 16 are arranged along the circumference of the ring body 11 .

[0059] It should be noted that the definitions of "inside" and "outside" in the text are: the direction from the center of the circle to the circumference is outward, and the direction from the circumference to the center of the circle is inward.

[0060] Specifically, outer retaining ring 12 extends radially outward from the outer edge of ring body 11. A first step 13 and an oil reservoir 121 are formed on the side of injection ring 01 that connects to the stator core. An injection chamber 14 is located radially inward of first step 13 on ring body 11 and communicates with oil reservoir 121. Figure 1 The picture shows the side where the fuel injection ring 01 is connected to the stator core. Figure 2 The side of the fuel injection ring 01 facing away from the stator core is shown.

[0061] As an example, the ring body 11 includes an inner ring body 111 and an outer ring body 112 extending radially outward from the inner ring body 111. A second step 113 is formed between the inner ring body 111 and the outer ring body 112, and an oil injection chamber 14 is formed between the second step 113 and the outer ring body 112. The oil injection chamber 14 is formed on the side of the oil injection ring 01 that is connected to the stator core and is connected to the oil storage chamber 121.

[0062] The oil spray holes 15 are opened on the outer ring body 112 , and a plurality of oil spray holes 15 are evenly spaced along the circumference of the outer ring body 112 , so that the spraying to the winding end is more uniform.

[0063] Winding avoidance grooves 16 are provided on the inner ring body 111. These grooves correspond to the winding mounting grooves on the stator core that the fuel injection ring 01 matches, with each groove 16 corresponding to a winding mounting groove. In the embodiment of the present application, the winding avoidance grooves 16 are square in shape, and multiple winding avoidance grooves 16 are evenly spaced along the circumference of the inner ring body 111.

[0064] The oil spray ring 01 in the embodiment of the present application is used to be installed on the stator core and is provided with a winding avoidance groove 16 for the winding to pass through. The cooling oil flows into the oil storage chamber 121 and then flows to the oil spray chamber 14. Thereafter, it is sprayed from the oil spray hole 15 and sprayed on the end of the winding to cool the end of the winding. The oil spray ring is integrated into the stator core, and the three-phase line will not interfere with the oil spray ring. This structure is applicable to stator structures with radial and axial three-phase line outlets.

[0065] Furthermore, if Figure 1 、 2 As shown, the oil injection ring 01 is also provided with a positioning sealing ring 17 for cooperating with the stator core;

[0066] The positioning sealing ring 17 extends axially from the inner peripheral wall of the ring body 11 .

[0067] Specifically, the positioning seal ring 17 extends axially toward the end connected to the stator core. The positioning seal ring 17 is inserted into and abuts against the inner circumference of the stator core. The positioning seal ring 17 is used to block the cooling oil, preventing it from flowing radially from the oil injection chamber 14 to the inner circumference of the stator core and leaking out.

[0068] Preferably, if Figure 1 As shown, a plurality of positioning bosses 171 for cooperating with the stator core slots are provided on the outer circumferential surface of the positioning sealing ring 17 , and the plurality of positioning bosses 171 are arranged along the circumference of the positioning sealing ring 17 .

[0069] See also Figure 9The inner circumferential wall of the stator core 03 is provided with several axially arranged stator core notches 31. The positioning bosses 171 on the positioning seal ring 17 match the stator core notches, with each boss 171 inserted into a stator core notch. The positioning bosses 171 not only enhance the sealing effect of the positioning seal ring 17 but also provide circumferential positioning control for the injection ring 01.

[0070] Furthermore, if Figure 1 、 2 As shown, a sealing groove 122 for installing a sealing ring is opened on the outer peripheral wall of the outer retaining ring 12 , and the sealing groove 122 is arranged along the circumference of the outer retaining ring 12 .

[0071] See also Figure 11 The outer peripheral wall of the outer retaining ring 12 is fitted with the inner wall of the main housing 2 of the motor, and the sealing groove 122 is used to install the sealing ring 02, which is used to improve the connection sealing between the outer retaining ring 12 and the main housing 2 and prevent the cooling oil in the oil storage chamber 121 from leaking.

[0072] The oil injection ring in the embodiment of the present application is used to be integrated into the stator core, and the three-phase line will not interfere with the oil injection ring. This structure is applicable to stator structures with radial and axial three-phase line outlets.

[0073] Example 2:

[0074] The fuel injection ring 01 in the embodiment of the present application has the same structure as that of the embodiment 1 except for the fuel injection cavity 14 and the fuel injection hole 15. The following only introduces the structure of the fuel injection cavity 14 and the fuel injection hole 15. For other structures, please refer to the relevant description of the embodiment 1 and the attached drawings. Figure 3 、 4 icon.

[0075] like Figure 3 、 4 As shown, the ring body 11 of the fuel injection ring 01 includes an inner ring body 111 and an outer ring body 112 extending radially outward from the inner ring body 111, the fuel injection cavity 14 includes a first fuel injection cavity 141, and the fuel injection hole 15 includes a first fuel injection hole 151;

[0076] A second step portion 113 is formed between the inner ring body 111 and the outer ring body 112 , a first oil injection chamber 141 is formed between the outer ring body 112 and the second step portion 113 , a first oil injection hole 151 is opened on the outer ring body 112 , and a winding avoidance groove 16 is opened on the inner ring body 111 .

[0077] Specifically, first oil injection chamber 141 is formed on the side of oil injection ring 01 that connects to the stator core and communicates with oil reservoir 121. First oil injection holes 151 are formed in outer ring body 112. Multiple first oil injection holes 151 are evenly spaced along the circumference of outer ring body 112, ensuring a more uniform spray on the winding ends.

[0078] Winding avoidance grooves 16 are provided on the inner ring body 111. These grooves correspond to the winding mounting grooves on the stator core that the fuel injection ring 01 matches, with each groove 16 corresponding to a winding mounting groove. In the embodiment of the present application, the winding avoidance grooves 16 are square in shape, and multiple winding avoidance grooves 16 are evenly spaced along the circumference of the inner ring body 111.

[0079] Furthermore, the oil injection chamber 14 further includes a second oil injection chamber 142 , and the oil injection hole 15 further includes a second oil injection hole 152 ;

[0080] The inner ring body 111 is provided with a plurality of second oil injection chambers 142 . Each second oil injection chamber 142 is communicated with the first oil injection chamber 141 . Each second oil injection chamber 142 is provided with at least one second oil injection hole 152 .

[0081] Specifically, the second oil injection cavity 142 is a groove formed on the inner ring body 111 , with one end of the second oil injection cavity 142 positioned at the second step 113 and the other end extending radially inward. The bottom surface of the second oil injection cavity 142 is flush with the bottom surface of the first oil injection cavity 141 .

[0082] Preferably, a second oil spray chamber 142 is provided between two adjacent winding avoidance slots 16. Each winding avoidance slot 16 contains a plurality of conductors. A second oil spray chamber 142 is provided between two adjacent winding avoidance slots 16 so that cooling oil can be sprayed between any two clusters of conductors, thereby improving the cooling effect.

[0083] In the oil spray ring 01 in the embodiment of the present application, the oil spray chamber 14 is composed of a first oil spray chamber 141 and a second oil spray chamber 142. Oil spray holes 15 are provided in the first oil spray chamber 141 and the second oil spray chamber 142. The oil spray chamber 14 has a large volume and a large number of oil spray holes 15, which effectively improves the effect of spray cooling.

[0084] Example 3:

[0085] The fuel injection ring 01 in the embodiment of the present application has the same structure as that of the embodiment 1 except for the fuel injection cavity 14 and the fuel injection hole 15. The following only introduces the structure of the fuel injection cavity 14 and the fuel injection hole 15. For other structures, please refer to the relevant description of the embodiment 1 and the attached drawings. Figure 5 、 6 icon.

[0086] Furthermore, a plurality of oil injection chambers 14 are evenly arranged around the circumference of the ring body 11 , and each oil injection chamber 14 is provided with at least one oil injection hole 15 .

[0087] Specifically, the oil injection chamber 14 is a groove formed on the ring body 11 . One end of the oil injection chamber 14 is disposed at the first step 13 , and the other end extends radially inward.

[0088] Preferably, an oil spray chamber 14 is provided radially outside each winding avoidance slot 16, and the oil spray chamber 14 corresponds one-to-one with the winding avoidance slot 16, so that the wire in each winding avoidance slot 16 can be sprayed with cooling oil to improve the cooling effect.

[0089] Among them, see Figure 7 The oil injection hole 15 can be arranged along the axial direction of the oil injection ring 01. The oil injection hole 15 arranged axially is easier to process. Figure 8 The oil injection hole 15 can also be set at a certain angle to the axial direction of the oil injection ring 01, and the oil outlet end 1501 of the oil injection hole 15 is located radially inside the oil inlet end 1502, so that the oil can be sprayed toward the wire in the winding avoidance groove 16.

[0090] Optionally, two or more oil injection holes 15 may be provided in each oil injection cavity 14 , and the plurality of oil injection holes 15 may be spaced apart along the radial direction of the ring body 11 .

[0091] The oil spray ring 01 in the embodiment of the present application includes a plurality of oil spray chambers 14 arranged along the circumferential direction, and each oil spray chamber 14 is provided with an oil spray hole 15, which not only ensures the number of oil spray holes 15 but also reduces the volume of the oil spray chamber 14, and can achieve a better spray cooling effect with a small amount of cooling oil.

[0092] Example 4:

[0093] In the embodiment of the present application, the stator 1 is as follows: Figure 9 、 10 As shown, it includes stator core 03, injection ring 01 and winding 04 ( Figure 9 、 10 Not shown, see Figure 11 ), the oil injection ring 01 is the oil injection ring in any of the above embodiments, and the stator core 03 is provided with a cooling oil channel 32 and a winding installation groove ( Figure 10 The cooling oil channel 32 is provided on the outer peripheral surface of the stator core 03, each winding mounting groove axially passes through the stator core 03, and a plurality of winding mounting grooves are arranged along the circumference of the stator core 03;

[0094] An oil spray ring 01 is installed at each axial end of the stator core 03, and the cooling oil channel 32 is connected to the oil storage chamber 121 of the two oil spray rings 01;

[0095] The winding installation grooves are arranged in a one-to-one correspondence with the winding avoidance grooves 16 of the fuel injection ring 01 , and the winding 04 is installed in the winding installation grooves and the winding avoidance grooves 16 .

[0096] In the embodiment of the present application, the stator, the stator core 03 and the oil injection ring 01 are integrated into one body, and then a conductive wire is wound around the stator core 03 and the oil injection ring 01 as a winding.

[0097] The cooling oil passages 32 are located on the outer circumference of the stator core 03 and include at least one circumferential oil passage 321 and multiple axial oil passages 322. The circumferential oil passage 321 communicates with each axial oil passage 322. The oil injection ring 01 includes an oil reservoir 121, one end of which is connected to the end of the stator core 03, connecting the reservoir 121 to each axial oil passage 322.

[0098] The cooling oil flows in from the circumferential oil passage 321 , flows through the axial oil passage 322 to the oil storage chamber 121 , flows into the oil spray chamber 14 , and is sprayed out from the oil spray hole 15 , spraying onto the conductor at the winding end.

[0099] In the embodiment of the present application, the stator is composed of a stator core 03, an oil spray ring 01 and a winding 04. Its cooling oil circuit can guide the cooling oil to be sprayed from the cooling oil channel 32 on the outer peripheral surface of the stator core 03 to the end of the winding, without the need to set up additional components for spraying oil on the end of the winding.

[0100] Embodiment 5:

[0101] The motor in the embodiment of the present application, such as Figure 11 As shown, it includes a main housing 2 and a stator 1, and the stator 1 is the stator in the aforementioned fourth embodiment;

[0102] The main housing 2 is provided with an installation cavity, the stator 1 is installed in the installation cavity, and the side wall of the main housing 2 seals the oil storage cavity 121;

[0103] The main housing 2 is provided with an oil inlet 05 , which is communicated with the cooling oil channel 32 .

[0104] Specifically, stator 1 is installed in the mounting cavity of main housing 2 and tightly connected to it, sealing oil reservoir 121. Cooling oil flows from oil inlet 05 of main housing 2 into cooling oil passage 32 of stator core 03, cooling stator core 03 before flowing into oil reservoir 121. It then flows into oil injection chamber 14 and is ejected from injection hole 15 onto the wires at the ends of winding 04.

[0105] Furthermore, if Figure 11 、 12 As shown, the motor also includes a front housing 3 for outputting wires, which is connected to one axial end of the main housing 2 and is used to close the installation cavity; the side wall of the front housing 3 is provided with a three-phase outlet 06 for extending the three-phase wiring of the winding 04 (not shown in the figure).

[0106] Specifically, the mounting cavity of the main housing 2 has an opening at one axial end, through which the stator 2 is installed. A front housing 3, which covers the mounting cavity, seals the cavity. A three-phase outlet 06 is provided on the side wall to allow for radial wiring of the three-phase winding 04.

[0107] Furthermore, the outlet front housing 3 is provided with an axially extending positioning member 07 , which extends into the installation cavity and contacts the oil injection ring 01 .

[0108] The edge of the mounting cavity opening of the main housing 2 is provided with a first flange 08, and the edge of the opening of the front housing 3 for the outlet is provided with a second flange 09. The first flange 08 and the second flange 09 are fastened together by bolts. A positioning member 07 extends axially from the opening of the front housing 3, extending into the mounting cavity and contacting the oil injection ring 01, thereby pressing the oil injection ring 01 against the end of the stator core 03 and preventing cooling oil from leaking from the connection between the oil injection ring 01 and the stator core 03.

[0109] The motor of the embodiment of the present application integrates the oil spray ring into the stator core, and the three-phase line will not interfere with the oil spray ring, thereby achieving both spray cooling of the winding end and radial output of the three-phase line.

[0110] Example 6:

[0111] The technical solution of the present application also provides a vehicle, comprising the fuel injection ring of any one of the aforementioned embodiments one to three, and / or the stator of embodiment four, and / or the motor of embodiment five.

[0112] The above description is merely the principle and preferred embodiments of the present application. It should be noted that, for those skilled in the art, implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included in the technical scope of the present invention. Based on the principles of the present application, several other variations can be made and should also be considered as the scope of protection of the present application.

Claims

1. A fuel injection ring, characterized in that: It comprises a ring body and an outer retaining ring extending radially outward from the ring body, a first step portion is formed between the ring body and the outer retaining ring, and an oil storage cavity is formed between the outer retaining ring and the first step portion; The ring body is provided with an oil injection cavity connected with the oil storage cavity, and the oil injection cavity is provided with a plurality of oil injection holes axially penetrating the ring body, and the plurality of oil injection holes are arranged along the circumference of the ring body; The ring body is also provided with a plurality of winding avoidance grooves axially penetrating the ring body, the winding avoidance grooves are located on the radial side of the injection cavity facing the center of the circle, and the plurality of winding avoidance grooves are arranged along the circumference of the ring body.

2. The oil spray ring according to claim 1, characterized in that: A positioning sealing ring is also provided for cooperating with the stator core; The positioning sealing ring extends axially from the inner peripheral wall of the ring body.

3. The oil spray ring according to claim 2, characterized in that: A plurality of positioning bosses for cooperating with the stator core slots are arranged on the outer peripheral surface of the positioning sealing ring, and the plurality of positioning bosses are arranged along the circumference of the positioning sealing ring.

4. The oil spray ring according to claim 1, characterized in that: A sealing groove for installing a sealing ring is provided on the outer peripheral wall of the outer retaining ring, and the sealing groove is arranged along the circumference of the outer retaining ring.

5. The oil spray ring according to any one of claims 1 to 4, characterized in that: The ring body comprises an inner ring body and an outer ring body extending radially outward from the inner ring body, the oil injection cavity comprises a first oil injection cavity, and the oil injection hole comprises a first oil injection hole; A second step portion is formed between the inner ring body and the outer ring body, the first oil injection cavity is formed between the outer ring body and the second step portion, the first oil injection hole is opened on the outer ring body, and the winding avoidance groove is opened on the inner ring body.

6. The oil spray ring according to claim 5, characterized in that: The oil injection chamber further includes a second oil injection chamber, and the oil injection hole further includes a second oil injection hole; The inner ring body is provided with a plurality of the second oil injection chambers, each of the second oil injection chambers is communicated with the first oil injection chamber, and each of the second oil injection chambers is provided with at least one second oil injection hole.

7. The oil spray ring according to claim 6, characterized in that: A second oil injection cavity is provided between two adjacent winding avoidance grooves.

8. The oil spray ring according to any one of claims 1 to 4, characterized in that: A plurality of the oil injection chambers are evenly arranged on the circumference of the ring body, and each of the oil injection chambers is provided with at least one oil injection hole.

9. A stator 1, characterized in that: The invention comprises a stator core, an oil injection ring and a winding, wherein the oil injection ring is the oil injection ring according to any one of claims 1 to 8, the stator core is provided with a cooling oil channel and a winding mounting groove, the cooling oil channel is arranged on the outer peripheral surface of the stator core, each of the winding mounting grooves axially penetrates the stator core, and a plurality of the winding mounting grooves are arranged along the circumference of the stator core; An oil spray ring is installed at each axial end of the stator core, and the cooling oil channel is connected to the oil storage chambers of the two oil spray rings; The winding installation groove and the winding avoidance groove of the oil injection ring are arranged in a one-to-one correspondence, and the winding is installed in the winding installation groove and the winding avoidance groove.

10. A motor, characterized in that: It comprises a main housing and a stator, wherein the stator is the stator according to claim 9; The main housing is provided with an installation cavity, the stator is installed in the installation cavity, and the side wall of the main housing seals the oil storage cavity; The main housing is provided with an oil inlet, and the oil inlet is communicated with the cooling oil channel.

11. The motor according to claim 10, characterized in that It also includes a front housing for outgoing wires, which is connected to one axial end of the main housing and is used to close the installation cavity; The side wall of the outlet front housing is provided with a three-phase outlet for the three-phase wiring of the winding to extend out.

12. The motor according to claim 11, characterized in that The outlet front housing is provided with a positioning piece extending axially, and the positioning piece extends into the installation cavity and abuts against the oil injection ring.

13. A vehicle, characterized in that: It comprises the oil injection ring according to any one of claims 1 to 8, and / or the stator according to claim 9, and / or the motor according to any one of claims 10 to 12.

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