Motor and vehicle

Abstract

The utility model discloses a motor and a vehicle. The motor comprises an end cover; the rotary transformer stator is arranged on the end cover; the pressing plate is arranged on the side, away from the end cover, of the rotary transformer stator, and the pressing plate is provided with a jet orifice; the armature assembly and the rotor are arranged on the side, away from the end cover, of the pressing plate, the rotor is rotationally arranged in the armature assembly, the armature assembly provides a rotating magnetic field for the rotor so as to drive the rotor to rotate, and the spraying opening corresponds to the armature assembly and / or the rotor so as to spray cooling media to the armature assembly and / or the rotor. According to the utility model, the injection orifice is arranged on the pressing plate, faces the armature assembly and / or the rotor, and injects the cooling medium to the armature assembly and / or the rotor to cool the armature assembly and the rotor, so that the structure is optimized, the integration level is improved, the number of parts is reduced, and the whole structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a motor and a vehicle. Background Art

[0002] In the related art, the resolver stator in the motor is usually fixed by a pressure plate, and the rotor in the motor is cooled by spraying oil into the rotor through an oil injection pipe, which has a complex structure and occupies a large space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a motor with an optimized structure, making the structure compact as a whole.

[0004] According to the embodiment of the utility model, the motor includes: an end cover; a resolver stator, which is arranged on the end cover; a pressure plate, which is arranged on the side of the resolver stator away from the end cover, and the pressure plate is provided with a spray port; an armature assembly and a rotor, which are arranged on the side of the pressure plate away from the end cover, and the rotor is rotatably arranged in the armature assembly, the armature assembly provides a rotating magnetic field for the rotor to drive the rotor to rotate, and the spray port corresponds to the armature assembly and / or the rotor to spray cooling medium to the armature assembly and / or the rotor.

[0005] According to the motor of the embodiment of the utility model, a spray port is arranged on the pressure plate, the spray port is directed toward the armature assembly and / or the rotor, and the spray port sprays cooling medium toward the armature assembly and / or the rotor to cool the armature assembly and the rotor, thereby optimizing the structure, improving the integration, reducing the number of components, and making the overall structure compact.

[0006] In some embodiments, the pressure plate includes: a base; an injection assembly, the injection assembly is arranged on the side of the base facing the rotor, and the injection port is arranged on the injection assembly; wherein a connecting member is provided on the base, and the connecting member is connected to the end cover so that the base stops against the rotating stator.

[0007] In some embodiments, the injection assembly is arranged to protrude toward the rotor so that the injection port is close to the armature assembly and / or the rotor.

[0008] In some embodiments, the injection assembly extends along the circumferential direction of the base, and there are multiple injection ports, which are spaced apart along the extension direction of the injection assembly.

[0009] In some embodiments, the plurality of injection ports include: a first injection port, the first injection port being arranged on the top surface of the injection assembly facing the rotor; a second injection port, the second injection port being arranged on a side surface of the injection assembly different from the top surface, the side surface being adjacent to the top surface, the second injection port facing the armature assembly and / or the rotor.

[0010] In some embodiments, the motor also includes a rotating shaft arranged in the rotor, the rotating shaft extends toward the end cover, the rotating shaft is rotatably connected to the end cover, and the base is provided with an avoidance hole for avoiding the rotating shaft, and the injection assembly includes: a first sub-section, the first sub-section is arranged on one side of the avoidance hole; a second sub-section, the second sub-section is connected to one end of the first sub-section, the second sub-section extends toward the avoidance hole away from the first sub-section, and the second sub-section is arranged around the avoidance hole; a third sub-section, the third sub-section is connected to the other end of the first sub-section, the third sub-section extends toward the avoidance hole away from the first sub-section, and the third sub-section is arranged around the avoidance hole.

[0011] In some embodiments, the injection assembly includes: a main body, which is arranged on the base, a flow cavity is arranged in the main body, and a first through hole connected to the flow cavity is provided on the base to supply the cooling medium to the flow cavity, and there are multiple injection ports, some of which are arranged on the main body; a cover plate, another part of the injection ports are arranged on the cover plate, and the cover plate is arranged on the side of the flow cavity away from the base to close the flow cavity; wherein the main body and the cover plate are connected by stir friction welding.

[0012] In some embodiments, a reinforcing rib is provided between the base and the main body, one side of the reinforcing rib is connected to the base, and the other adjacent side is connected to the main body.

[0013] In some embodiments, a first supply channel, a second supply channel and a third supply channel are provided in the end cover, and the motor also includes a rotating shaft provided in the rotor, the rotating shaft extends toward the end cover, and the rotating shaft is rotatably connected to the end cover through a bearing, the first supply channel is connected to the interior of the rotating shaft to supply the cooling medium to the rotating shaft, the second supply channel is connected to the space where the bearing is located to cool the bearing, and the third supply channel is connected to the first through hole to supply the cooling medium to the circulation cavity.

[0014] A vehicle according to an embodiment of the utility model includes the above-mentioned motor.

[0015] According to the vehicle of the embodiment of the utility model, a spray port is arranged on the pressure plate, the spray port is directed toward the armature assembly and / or the rotor, and the spray port sprays cooling medium toward the armature assembly and / or the rotor to cool the armature assembly and the rotor, thereby optimizing the structure, improving the integration, reducing the number of components, and making the overall structure compact.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a cross-sectional view of the motor in the embodiment of the utility model;

[0019] Figure 2 It is a partial structural exploded diagram of the motor in the embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the coordination between the rotary transformer stator and the pressure plate in the first embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the cooperation between the rotary transformer stator and the pressure plate in the second embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the position of the rotating shaft in the embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of the first sub-section, the second sub-section and the third sub-section in the embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the main body and the cover plate in the embodiment of the utility model;

[0025] Figure 8 It is a schematic diagram of the first supply channel, the second supply channel and the third supply channel in the embodiment of the utility model;

[0026] Fig. 9 It is a schematic diagram of the first through hole and the second through hole in the embodiment of the utility model.

[0027] Reference numerals:

[0028] 100. Motor;

[0029] 10. end cover; 11. first supply channel; 12. second supply channel; 13. third supply channel;

[0030] 20. Rotary transformer stator; 21. Mounting hole; 22. Second through hole;

[0031] 30. Press plate; 31. Injection port; 311. First injection port; 312. Second injection port; 32. Base; 321. Connector; 322. Avoidance hole; 323. Reinforcement rib; 324. First through hole; 33. Injection assembly; 331. First sub-unit; 332. Second sub-unit; 333. Third sub-unit; 334. Main body; 3341. Circulation cavity; 335. Cover plate;

[0032] 40. Armature assembly; 50. Rotor; 60. Rotating shaft; 61. Bearing. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0037] Reference below Figure 1-Figure 9 A motor 100 according to an embodiment of the present invention is described.

[0038] Reference Figure 1 , Figure 2 According to an embodiment of the present invention, a motor 100 includes an end cover 10 , a rotary stator 20 , a pressure plate 30 , an armature assembly 40 and a rotor 50 .

[0039] The resolver stator 20 is disposed on the end cover 10. The pressure plate 30 is disposed on the side of the resolver stator 20 away from the end cover 10, and the pressure plate 30 is provided with an injection port 31. The armature assembly 40 and the rotor 50 are disposed on the side of the pressure plate 30 away from the end cover 10, and the rotor 50 is rotatably disposed in the armature assembly 40. The armature assembly 40 provides a rotating magnetic field for the rotor 50 to drive the rotor 50 to rotate, and the injection port 31 corresponds to the armature assembly 40 and / or the rotor 50 to spray the cooling medium to the armature assembly 40 and / or the rotor 50.

[0040] The resolver stator 20 is used to detect various information of the rotation of the rotor 50, such as speed, angular position, and rotation direction. The pressure plate 30 is disposed on the side of the resolver stator 20 away from the end cover 10, and the pressure plate 30 is used to fix and position the resolver stator 20 to ensure the stability of the resolver stator 20.

[0041] In the related art, the resolver stator in the motor is usually fixed by a pressure plate, and the rotor in the motor is cooled by spraying oil into the rotor through an oil injection pipe, which has a complex structure and occupies a large space.

[0042] In the embodiment of the utility model, a spray port 31 is provided on the pressure plate 30, and the spray port 31 corresponds to the armature assembly 40 and / or the rotor 50. The spray port 31 can spray cooling medium to the armature assembly 40 and the rotor 50 to cool the armature assembly 40 and the rotor 50, thereby optimizing the structure, improving the integration, reducing the number of components, and making the overall structure compact.

[0043] The injection port 31 may be used to inject the cooling medium toward the armature assembly 40 , or to inject the cooling medium toward the rotor 50 , or to inject the cooling medium toward the armature assembly 40 and the rotor 50 at the same time.

[0044] Specifically, the cooling medium may be cooling oil.

[0045] According to the motor 100 of the embodiment of the utility model, a spray port 31 is provided on the pressure plate 30, and the spray port 31 is directed toward the armature assembly 40 and / or the rotor 50. The spray port 31 sprays cooling medium toward the armature assembly 40 and / or the rotor 50 to cool the armature assembly 40 and the rotor 50, thereby optimizing the structure, improving the integration, reducing the number of components, and making the overall structure compact.

[0046] Reference Figure 2 In some embodiments, the pressing plate 30 includes: a base 32 and an injection assembly 33 .

[0047] The injection assembly 33 is disposed on the side of the base 32 facing the rotor 50 , and the injection port 31 is disposed on the injection assembly 33 . A connecting member 321 is disposed on the base 32 , and the connecting member 321 is connected to the end cover 10 so that the base 32 stops against the rotary stator 20 .

[0048] Among them, the base 32 and the injection assembly 33 are different from each other. A connector 321 is provided on the base 32, and the end cover 10 is connected by the connector 321. The base 32 is located on the side of the resolver stator 20 away from the end cover 10. After the connector 321 is connected to the end cover 10, the base 32 stops against the resolver stator 20, and the resolver stator 20 stops against the end cover 10, thereby fixing the resolver stator 20.

[0049] In the above solution, the base 32 is fixed by providing the connecting piece 321, and the rotary transformer stator 20 is fixed at the same time, which has a simple structure, is easy to operate, and improves convenience.

[0050] Specifically, the connecting member 321 may be a bolt, a screw, or a rivet.

[0051] Specifically, a mounting hole 21 is provided on the resolver stator 20 , and the connecting member 321 is passed through the mounting hole 21 , thereby further improving stability.

[0052] Reference Figure 2 In some embodiments, the injection assembly 33 is arranged to protrude toward the rotor 50 so that the injection port 31 is close to the armature assembly 40 and / or the rotor 50 .

[0053] The injection assembly 33 is protruding from the base 32 , and the injection assembly 33 is closer to the armature assembly 40 and the rotor 50 than the base 32 .

[0054] In the above solution, by protruding the injection assembly 33, the injection port 31 is closer to the armature assembly 40 and the rotor 50, and more cooling medium is injected onto the armature assembly 40 or the rotor 50, thereby improving efficiency.

[0055] Reference Figure 3In some embodiments, the injection assembly 33 extends along the circumferential direction of the base 32 , and there are multiple injection ports 31 , which are spaced apart along the extension direction of the injection assembly 33 .

[0056] The injection assembly 33 has a certain length, and the plurality of injection ports 31 are distributed at different positions of the injection assembly 33 , and the plurality of injection ports 31 face toward multiple positions of the armature assembly 40 and the rotor 50 .

[0057] In the above scheme, by providing a plurality of injection ports 31 , and the injection ports 31 are arranged at intervals along the extension direction of the injection assembly 33 , the plurality of injection ports 31 spray cooling medium to different parts of the armature assembly 40 and the rotor 50 , thereby increasing the cooling range and further improving the cooling effect.

[0058] Reference Figure 4 In some embodiments, the plurality of injection ports 31 include a first injection port 311 and a second injection port 312 .

[0059] The first injection port 311 is disposed on the top surface of the injection assembly 33 facing the rotor 50 . The second injection port 312 is disposed on a side surface of the injection assembly 33 different from the top surface, the side surface is adjacent to the top surface, and the second injection port 312 faces the armature assembly 40 and / or the rotor 50 .

[0060] The top surface is the surface of the injection assembly 33 facing the rotor 50 , and the side surface is not directly facing the rotor 50 .

[0061] In the above scheme, by setting the first injection port 311 on the top surface and the second injection port 312 on the side surface, the first injection port 311 and the second injection port 312 spray cooling medium to different parts of the armature assembly 40 and the rotor 50, thereby increasing the cooling range and further improving the cooling effect.

[0062] Specifically, the injection direction of the second injection port 312 forms an angle with the center line of the injection assembly 33 , and the second injection port 312 faces the armature assembly 40 or the rotor 50 , thereby increasing the cooling range.

[0063] Reference Figure 5 , Figure 6 In some embodiments, the motor 100 further includes a rotating shaft 60 disposed in the rotor 50, the rotating shaft 60 extends toward the end cover 10, the rotating shaft 60 is rotatably connected to the end cover 10, and an avoidance hole 322 for avoiding the rotating shaft 60 is provided on the base 32, and the injection assembly 33 includes: a first sub-section 331, a second sub-section 332 and a third sub-section 333.

[0064] The first sub-portion 331 is disposed at one side of the avoidance hole 322. The second sub-portion 332 is connected to one end of the first sub-portion 331, and the second sub-portion 332 extends in a direction away from the first sub-portion 331 in the avoidance hole 322, and the second sub-portion 332 is disposed around the avoidance hole 322. The third sub-portion 333 is connected to the other end of the first sub-portion 331, and the third sub-portion 333 extends in a direction away from the first sub-portion 331 in the avoidance hole 322, and the third sub-portion 333 is disposed around the avoidance hole 322.

[0065] Among them, the second sub-section 332 and the third sub-section 333 are arranged on opposite sides of the first sub-section 331, and the second sub-section 332 and the third sub-section 333 extend in the direction away from the first sub-section 331. The second sub-section 332 and the third sub-section 333 are arranged around the avoidance hole 322. The second sub-section 332 and the third sub-section 333 cover a larger range. The first sub-section 331, the second sub-section 332 and the third sub-section 333 are all provided with injection holes, so that the range of the cooling medium is wider.

[0066] In the above scheme, by setting the first sub-section 331, the second sub-section 332 and the third sub-section 333, the first sub-section 331 is arranged on one side of the avoidance hole 322, the second sub-section 332 extends in the direction of the avoidance hole 322 away from the first sub-section 331, and the second sub-section 332 is arranged around the avoidance hole 322, the third sub-section 333 extends in the direction of the avoidance hole 322 away from the first sub-section 331, and the third sub-section 333 is arranged around the avoidance hole 322, the first sub-section 331, the second sub-section 332 and the third sub-section 333 have a larger corresponding range, and the injection range corresponding to the injection hole is wider, thereby increasing the influence range of the cooling medium and further improving the cooling range.

[0067] In some specific embodiments, the rotary transformer stator 20 includes a stator core and a stator winding, the stator winding is wound on the stator core, the stator winding includes an excitation winding and an output winding, the rotating shaft 60 passes through the stator winding, and an alternating magnetic field is generated when the excitation winding is energized. The rotating shaft 60 rotates synchronously with the rotor 50, the winding on the rotating shaft 60 induces a voltage in the alternating magnetic field, and the output winding induces a voltage to generate a signal. By decoding the signal, various information of the rotating shaft 60 and the rotor 50 can be accurately determined.

[0068] Specifically, the base 32 is made of aluminum, and the aluminum base 32 is located between the rotor 50 and the resolver stator 20 to provide a shielding effect and avoid interference.

[0069] Reference Figure 7 In some embodiments, the injection assembly 33 includes: a main body 334 and a cover plate 335 .

[0070] The main body 334 is disposed on the base 32, and a flow cavity 3341 is disposed in the main body 334. The base 32 is provided with a first through hole 324 connected to the flow cavity 3341 to supply cooling medium to the flow cavity 3341. There are multiple injection ports 31, and some of the injection ports 31 are disposed on the main body 334. In addition, some of the injection ports 31 are disposed on the cover plate 335, and the cover plate 335 is disposed on the side of the flow cavity 3341 away from the base 32 to close the flow cavity 3341. The main body 334 and the cover plate 335 are connected by stir friction welding.

[0071] The first through hole 324 on the base 32 is connected to the circulation cavity 3341 , and the first through hole 324 supplies the externally supplied cooling medium to the circulation cavity 3341 . The plurality of injection ports 31 are respectively connected to the circulation cavity 3341 , so that the injection ports 31 inject the cooling medium.

[0072] The injection assembly 33 is divided into a main body 334 and a cover plate 335 , and the flow cavity 3341 is sealed by the cover plate 335 . It can be understood that the main body 334 and the cover plate 335 can be manufactured separately, which facilitates the molding of the flow cavity 3341 .

[0073] In the above solution, by setting the main body 334 and the cover plate 335 to be connected by stir friction welding, the wall thickness of the injection component 33 is effectively reduced, and the probability of defects such as cracks and holes in the injection component 33 is reduced.

[0074] Specifically, the main body 334 is integrally formed with the base 32 to reduce the number of parts, and the main body 334 and the cover plate 335 are separated, which facilitates the integral forming of the main body 334 with the base 32 and reduces the manufacturing difficulty.

[0075] Reference Figure 7 In some embodiments, a reinforcing rib 323 is provided between the base 32 and the main body 334 , and one side of the reinforcing rib 323 is connected to the base 32 , and the other adjacent side is connected to the main body 334 .

[0076] The reinforcing rib 323 has a plurality of side surfaces, one side surface is connected to the base 32 , and another adjacent side surface is connected to the main body 334 , and the reinforcing rib 323 exerts a reinforcing effect.

[0077] In the above solution, by providing reinforcing ribs 323 between the base 32 and the main body 334 , the reinforcing ribs 323 are utilized to strengthen the structural strength and improve the overall stability.

[0078] Reference Figure 8In some embodiments, a first supply channel 11, a second supply channel 12 and a third supply channel 13 are provided in the end cover 10. The motor 100 also includes a rotating shaft 60 provided in the rotor 50. The rotating shaft 60 extends toward the end cover 10. The rotating shaft 60 is rotatably connected to the end cover 10 through a bearing 61. The first supply channel 11 is connected to the interior of the rotating shaft 60 to supply cooling medium to the rotating shaft 60. The second supply channel 12 is connected to the space where the bearing 61 is located to lubricate the bearing 61. The third supply channel 13 is connected to the first through hole 324 to supply cooling medium to the flow cavity 3341.

[0079] Among them, multiple supply flow channels are arranged in the end cover 10, and the multiple supply flow channels supply cooling medium to the space where the rotating shaft 60, the bearing 61 are located and the flow cavity 3341 respectively. The cooling medium in the rotating shaft 60 is supplied to the rotor 50, so as to cool the rotor 50. The bearing 61 is installed in a bearing space on the end cover 10. A large amount of heat is generated during the operation of the bearing 61. The medium flows to the bearing space to lubricate the bearing 61 to reduce its heat generation. The flow cavity 3341 sprays cooling medium to the armature assembly 40 and the end of the rotor 50 through the injection port 31, so as to give full play to the cooling effect of the cooling medium.

[0080] In the above scheme, by setting the first supply channel 11, the second supply channel 12 and the third supply channel 13 to supply cooling medium to the rotating shaft 60, the space where the bearing 61 is located and the flow cavity 3341 respectively, multiple supply channels fully utilize the cooling medium and improve the overall cooling effect of the motor 100.

[0081] Specifically, the first supply channel 11, the second supply channel 12 and the third supply channel 13 take in oil from the casing joint surface or oil pipes, etc., which will not be described in detail here.

[0082] Reference Fig. 9 Specifically, a second through hole 22 is provided on the resolver stator 20, one end of the second through hole 22 is connected to the first through hole 324, and the other end is connected to the third supply channel 13 for supplying cooling medium.

[0083] In some embodiments, the motor 100 is configured as an asynchronous motor, and more specifically, the asynchronous motor is a three-phase squirrel cage asynchronous motor.

[0084] In some embodiments, the end cover 10 is die-cast, and specifically, the end cover 10 is high-pressure die-cast.

[0085] The end cover 10 is the rear end cover of the motor, and the overall structure is simple.

[0086] In some embodiments, the motor 100 also includes a casing, which is connected to the end cover 10 by bolts, and the armature assembly 40 is interference fit with the casing. Compared with the solution of fixing the armature assembly by bolts in the related art, the number of parts is reduced and the structure is compact.

[0087] Specifically, the armature assembly 40 is assembled from flat wires, stator cores, insulating paper, etc. through multiple processes.

[0088] In some embodiments, the rotor 50 is formed by an aluminum casting process to facilitate molding.

[0089] A vehicle according to an embodiment of the present invention includes the motor 100 described above.

[0090] According to the vehicle of the embodiment of the utility model, by setting the injection port 31 on the pressure plate 30, the injection port 31 is directed toward the armature assembly 40 and / or the rotor 50, and the injection port 31 sprays cooling medium toward the armature assembly 40 and / or the rotor 50 to cool the armature assembly 40 and the rotor 50, thereby optimizing the structure, improving the integration, reducing the number of components, and making the overall structure compact.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: End cap (10); A resolver stator (20), wherein the resolver stator (20) is disposed on the end cover (10); A pressure plate (30), the pressure plate (30) being arranged on a side of the rotary transformer stator (20) away from the end cover (10), the pressure plate (30) being provided with an injection port (31); An armature assembly (40) and a rotor (50), wherein the armature assembly (40) and the rotor (50) are arranged on a side of the pressure plate (30) away from the end cover (10), the rotor (50) is rotatably arranged in the armature assembly (40), the armature assembly (40) provides a rotating magnetic field for the rotor (50) to drive the rotor (50) to rotate, and the injection port (31) corresponds to the armature assembly (40) and / or the rotor (50) to inject a cooling medium to the armature assembly (40) and / or the rotor (50).

2. The motor according to claim 1, characterized in that The pressing plate (30) comprises: Base (32); An injection assembly (33), the injection assembly (33) being arranged on a side of the base (32) facing the rotor (50), and the injection port (31) being arranged on the injection assembly (33); wherein, A connecting piece (321) is provided on the base (32), and the connecting piece (321) is connected to the end cover (10) so that the base (32) stops against the rotary stator (20).

3. The motor according to claim 2, characterized in that The injection assembly (33) is arranged to protrude in the direction of the rotor (50), so that the injection port (31) is close to the armature assembly (40) and / or the rotor (50).

4. The motor according to claim 2, characterized in that The injection assembly (33) extends along the circumferential direction of the base (32), and there are a plurality of injection ports (31), which are arranged at intervals along the extension direction of the injection assembly (33).

5. The motor according to claim 4, characterized in that The plurality of injection ports (31) include: a first injection port (311), the first injection port (311) being arranged on a top surface of the injection assembly (33) facing the rotor (50); A second injection port (312), wherein the second injection port (312) is arranged on a side surface of the injection assembly (33) different from the top surface, the side surface is adjacent to the top surface, and the second injection port (312) faces the armature assembly (40) and / or the rotor (50).

6. The motor according to claim 2, characterized in that The invention also includes a rotating shaft (60) disposed in the rotor (50), the rotating shaft (60) extending toward the end cover (10), the rotating shaft (60) being rotatably connected to the end cover (10), the base (32) being provided with an escape hole (322) for escaping the rotating shaft (60), and the injection assembly (33) comprising: A first sub-portion (331), wherein the first sub-portion (331) is arranged on one side of the avoidance hole (322); a second sub-portion (332), the second sub-portion (332) being connected to one end of the first sub-portion (331), the second sub-portion (332) extending in a direction away from the first sub-portion (331) toward the avoidance hole (322), and the second sub-portion (332) being arranged around the avoidance hole (322); A third sub-portion (333), wherein the third sub-portion (333) is connected to the other end of the first sub-portion (331), the third sub-portion (333) extends in a direction away from the first sub-portion (331) toward the avoidance hole (322), and the third sub-portion (333) is arranged around the avoidance hole (322).

7. The motor according to claim 2, characterized in that The injection assembly (33) comprises: A main body (334), the main body (334) being arranged on the base (32), a circulation cavity (3341) being arranged in the main body (334), a first through hole (324) being arranged on the base (32) and communicating with the circulation cavity (3341) so as to supply the cooling medium to the circulation cavity (3341), a plurality of injection ports (31), and some of the injection ports (31) being arranged on the main body (334); A cover plate (335), another part of the injection port (31) is arranged on the cover plate (335), and the cover plate (335) is arranged on a side of the flow cavity (3341) away from the base (32) to close the flow cavity (3341); wherein, The main body (334) and the cover plate (335) are connected by friction stir welding.

8. The motor according to claim 7, characterized in that A reinforcing rib (323) is provided between the base (32) and the main body (334); one side of the reinforcing rib (323) is connected to the base (32), and the other adjacent side is connected to the main body (334).

9. The motor according to claim 7, characterized in that The end cover (10) is provided with a first supply channel (11), a second supply channel (12) and a third supply channel (13). The motor (100) further comprises a rotating shaft (60) provided in the rotor (50). The rotating shaft (60) extends toward the end cover (10). The rotating shaft (60) is rotatably connected to the end cover (10) via a bearing (61). The first supply channel (11) is connected to the interior of the rotating shaft (60) to supply the cooling medium to the rotating shaft (60). The second supply channel (12) is connected to the space where the bearing (61) is located to cool the bearing (61). The third supply channel (13) is connected to the first through hole (324) to supply the cooling medium to the circulation cavity (3341).

10. A vehicle, characterized in that: The invention comprises the electric machine (100) according to any one of claims 1 to 9.

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