Motor cooling structure, motor and vehicle

Abstract

The utility model discloses a motor cooling structure, a motor and a vehicle. The motor cooling structure comprises a motor housing, a first water cooling structure and a second water cooling structure. The motor shell is provided with a shell water channel, and the shell water channel is provided with a water inlet and a water outlet; the first water cooling structure is used for being connected with a first end winding of a stator winding, and the first water cooling structure is provided with a first water cooling flow channel communicated with the shell water channel; and the second water cooling structure is used for being connected with a second end winding of the stator winding, and the second water cooling structure is provided with a second water cooling flow channel communicated with the shell water channel. According to the motor cooling structure, through the arrangement of the first water cooling structure and the second water cooling structure, cooling water in the shell water channel can be introduced into the first water cooling flow channel and the second water cooling flow channel located at the end of the stator winding, cooling of the end of the stator winding is achieved, the structure is simple, and the cooling effect on the motor is better.

Description

Technical Field

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

[0002] With the development of new energy vehicle drive motor technology, the vehicle has higher and higher performance requirements for the motor, such as high power density and high heat load, so the cooling requirement for the motor has also increased.

[0003] In the existing motors, the water cooling scheme is mainly adopted to cool the whole motor. Generally, the stator core of the motor is cooled through the shell water channel arranged on the motor shell, but the winding end of the motor stator cannot be cooled. If an existing winding end cooling structure is additionally added, the length of the cooling water channel inside the motor will be extended, resulting in poor water cooling effect. Summary of the Utility Model

[0004] The embodiment of the utility model provides a motor cooling structure, a motor and a vehicle to solve the problems that the existing motor cooling structure cannot cool the winding end and the water cooling effect is poor.

[0005] The embodiment of the utility model provides a motor cooling structure, including a motor shell, a first water cooling structure and a second water cooling structure;

[0006] A shell water channel is arranged on the motor shell, and a water inlet and a water outlet are arranged on the shell water channel;

[0007] The first water cooling structure is used to connect with the first end winding of the stator, and a first water cooling flow channel communicated with the shell water channel is arranged on the first water cooling structure;

[0008] The second water cooling structure is used to connect with the second end winding of the stator, and a second water cooling flow channel communicated with the shell water channel is arranged on the second water cooling structure.

[0009] Preferably, the shell water channel includes a water inlet channel, a first shell water channel, a second shell water channel and a water outlet channel;

[0010] The water inlet is arranged on the water inlet channel, the water outlet is arranged on the water outlet channel, and the first shell water channel and the second shell water channel are arranged in parallel between the water inlet channel and the water outlet channel;

[0011] The first end of the first water cooling flow channel is connected with the first end of the water inlet channel, the second end of the first water cooling flow channel is connected with the first end of the first shell water channel, and the second end of the first shell water channel is connected with the water outlet channel;

[0012] The first end of the second water-cooling channel is connected to the second end of the water inlet channel, the second end of the second water-cooling channel is connected to the first end of the second housing channel, and the second end of the second housing channel is connected to the water outlet channel.

[0013] Preferably, the first housing channel and the second housing channel are arranged on the motor housing along the circumferential direction of the motor;

[0014] Both the first housing channel and the second housing channel include an S-shaped channel, and the S-shaped channel is arranged on the motor housing along the circumferential direction of the motor.

[0015] Preferably, the first water-cooling channel includes a first arc-shaped channel, one side of the first arc-shaped channel is in contact with the first end winding of the stator, the first end of the first arc-shaped channel is connected to the first end of the water inlet channel, and the second end of the first arc-shaped channel is connected to the first end of the first housing channel;

[0016] The second water-cooling channel includes a second arc-shaped channel, one side of the second arc-shaped channel is in contact with the second end winding of the stator, the second end of the second arc-shaped channel is connected to the second end of the water inlet channel, and the second end of the second arc-shaped channel is connected to the first end of the second housing channel.

[0017] Preferably, the first water-cooling structure includes a first cover plate and a first water-cooling plate;

[0018] The first water-cooling plate is in contact with the first end winding of the stator;

[0019] The first cover plate is arranged on the first water-cooling plate, and the first water-cooling plate cooperates with the first cover plate to form the first water-cooling channel;

[0020] The second water-cooling structure includes a second cover plate and a second water-cooling plate;

[0021] The second water-cooling plate is in contact with the second end winding of the stator;

[0022] The second cover plate is arranged on the second water-cooling plate, and the second water-cooling plate cooperates with the second cover plate to form the second water-cooling channel.

[0023] Preferably, a first sealing structure is provided between the first water-cooling channel and the housing channel, and / or a first sealing structure is provided between the second water-cooling channel and the housing channel;

[0024] A second sealing structure is provided between the first water-cooling plate and the first cover plate, and / or a second sealing structure is provided between the second water-cooling plate and the second cover plate.

[0025] Preferably, a first heat dissipation member is provided on a side of the first water cooling plate close to the first cover plate, and / or a second heat dissipation member is provided on a side of the second water cooling plate close to the second cover plate.

[0026] Preferably, a first heat conduction member is provided on a side of the first water cooling plate away from the first cover plate, and / or a second heat conduction member is provided on a side of the second water cooling plate away from the second cover plate.

[0027] An embodiment of the present invention further provides a motor, including a stator winding and the motor cooling structure according to any one of the above;

[0028] The stator winding is arranged inside the motor housing;

[0029] The first water cooling structure is connected to the first end winding of the stator;

[0030] The second water cooling structure is connected to the second end winding of the stator.

[0031] An embodiment of the present invention further provides a vehicle, including the above motor.

[0032] An embodiment of the present invention provides a motor cooling structure, a motor and a vehicle. By arranging the first water cooling structure and the second water cooling structure, the cooling water in the housing water channel can be introduced into the first water cooling flow channel and the second water cooling flow channel located at the end of the stator winding, so as to realize the cooling of the end of the stator winding. The structure is simple and the cooling effect on the motor is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 is a schematic cross-sectional structure diagram of a motor in an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a housing water channel in an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of a first water cooling plate in an embodiment of the present invention.

[0037] In the figure: 1. Motor housing; 11. Housing water channel; 111. Inlet water channel; 112. First housing water channel; 113. Second housing water channel; 114. Outlet water channel; 12. Inlet; 13. Outlet; 2. First water cooling structure; 21. First water cooling flow channel; 22. First cover plate; 23. First water cooling plate; 3. Second water cooling structure; 31. Second water cooling flow channel; 32. Second cover plate; 33. Second water cooling plate; 4. Stator; 41. First end winding; 42. Second end winding; 43. Stator core; 5. First end cover; 6. Second end cover; 7. Motor shaft; 8. First heat dissipation component. Detailed implementation manners

[0038] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0039] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0040] In the description of the present utility model, it should be noted that, unless otherwise clearly defined 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] An embodiment of the present utility model provides a motor cooling structure, as Figure 1 and Figure 2As shown in the figure, it includes a motor housing 1, a first water cooling structure 2 and a second water cooling structure 3. The motor housing 1 is provided with a housing water channel 11, and the housing water channel 11 is provided with a water inlet 12 and a water outlet 13. The first water cooling structure 2 is used to connect with the first end winding 41 of the stator 4, and the first water cooling structure 2 is provided with a first water cooling flow channel 21 communicated with the housing water channel 11. The second water cooling structure 3 is used to connect with the second end winding 42 of the stator 4, and the second water cooling structure 3 is provided with a second water cooling flow channel 31 communicated with the housing water channel 11.

[0042] Generally, a motor includes a motor housing 1, a stator 4 and a rotor arranged in the motor housing 1. The stator 4 specifically includes a stator core 43 and a stator winding. The stator winding is wound around the stator core 43, and the parts of the stator winding extending from both ends of the stator core 43 are respectively a first end winding 41 and a second end winding 42.

[0043] As an example, the motor cooling structure includes a motor housing 1, a first water cooling structure 2 and a second water cooling structure 3. The motor housing 1 is arranged around the outer periphery of the stator 4, the inner wall of the motor housing 1 is in contact with the outer periphery of the stator core 43, and the housing water channel 11 arranged in the motor housing 1 is used to cool the stator core 43. The first water cooling structure 2 is provided with a first water cooling flow channel 21 communicated with the housing water channel 11, and the first water cooling structure 2 is connected with the first end winding 41 of the stator 4, that is, the two are in contact to achieve heat transfer. The second water cooling structure 3 is provided with a second water cooling flow channel 31 communicated with the housing water channel 11, and the second water cooling structure 3 is connected with the second end winding 42 of the stator 4, that is, the two are in contact to achieve heat transfer.

[0044] When cooling the motor, cooling water enters from the water inlet 12 on the housing water channel 11, flows into the first water cooling flow channel 21 and the second water cooling flow channel 31 in two paths, then re-converges into the housing water channel 11 and exits from the water outlet 13, so as to realize the cooling of the stator core 43, the first end winding 41 and the second end winding 42. In this example, by setting the first water cooling structure 2 and the second water cooling structure 3, the cooling water in the housing water channel 11 can be introduced into the first water cooling flow channel 21 and the second water cooling flow channel 31 located at the ends of the stator 4, so as to realize the cooling of the ends of the stator 4. The structure is simple and the cooling effect on the motor is better.

[0045] In one embodiment, as Figure 2As shown, the housing water channel 11 includes an inlet water channel 111, a first housing water channel 112, a second housing water channel 113, and an outlet water channel 114; an inlet 12 is provided on the inlet water channel 111, and an outlet 13 is provided on the outlet water channel 114. The first housing water channel 112 and the second housing water channel 113 are arranged in parallel between the inlet water channel 111 and the outlet water channel 114. The first end of the first water cooling channel 21 is connected to the first end of the inlet water channel 111, the second end of the first water cooling channel 21 is connected to the first end of the first housing water channel 112, and the second end of the first housing water channel 112 is connected to the outlet water channel 114. The first end of the second water cooling channel 31 is connected to the second end of the inlet water channel 111, the second end of the second water cooling channel 31 is connected to the first end of the second housing water channel 113, and the second end of the second housing water channel 113 is connected to the outlet water channel 114.

[0046] As an example, as Figure 2 shown, the housing water channel 11 includes an inlet water channel 111, a first housing water channel 112, a second housing water channel 113, and an outlet water channel 114. The inlet water channel 111 can be a straight water flow channel laid along the axial direction of the motor on the inner wall of the motor housing 1. The inlet water channel 111 can be a tee pipe structure. The first end and the second end of the inlet water channel 111 are respectively connected to the first end of the first water cooling channel 21 and the first end of the second water cooling channel 31, and the third end of the inlet water channel 111 is provided with an inlet 12. In this example, the first housing water channel 112 and the second housing water channel 113 are arranged on both sides of the inlet water channel 111. Correspondingly, the outlet water channel 114 can be a pipe arranged along the radial direction of the motor and used to connect the outlet 13. The outlet water channel 114 is connected to the second ends of the first housing water channel 112 and the second housing water channel 113 to form a tee pipe structure.

[0047] When cooling the motor, cooling water enters from the water inlet 12 on the water inlet channel 111. After entering the water inlet channel 111, it is divided into two paths. One path flows into the first water cooling channel 21 from the first end of the water inlet channel 111, and the other path flows into the second water cooling channel 31 from the second end of the water inlet channel 111. The cooling water in the first water cooling channel 21 flows into the first housing water channel 112 to cool the first end winding 41 of the stator 4 and the corresponding part of the stator core 43 of the first housing water channel 112. Correspondingly, the cooling water in the second water cooling channel 31 flows into the second housing water channel 113 to cool the second end winding 42 of the stator 4 and the corresponding other part of the stator core 43 of the second housing water channel 113, realizing water cooling of the entire motor. This setting can divide the cooling water entering from the water inlet 12 into two paths, and the two paths of cooling water cool the two halves of the entire motor simultaneously. At the same time, since the first housing water channel 112 is connected to the first water cooling channel 21 corresponding to the first end winding 41, and the second housing water channel 113 is connected to the second water cooling channel 31 corresponding to the second end winding 42, the stator core 43, the first end winding 41, and the second end winding 42 are cooled simultaneously. In the embodiment of the present application, the entire motor cooling water channel is divided into two parallel cooling water channels, which not only shortens the extension distance of the water channel, speeds up the cooling cycle, and can improve the cooling efficiency, but also realizes cooling of the first end winding 41 and the second end winding 42 while cooling the stator core 43.

[0048] In one embodiment, the first housing water channel 112 and the second housing water channel 113 are arranged on the motor housing 1 along the circumferential direction of the motor. Both the first housing water channel 112 and the second housing water channel 113 include S-shaped channels, and the S-shaped channels are arranged on the motor housing 1 along the circumferential direction of the motor.

[0049] As an example, the first housing water channel 112 and the second housing water channel 113 can be circumferentially arranged on the motor housing 1 in the clockwise and counterclockwise directions respectively, and are respectively in contact with the two halves of the stator core 43 in the motor housing 1, shortening the water path and improving the cooling efficiency. The first housing water channel 112 may include a first S-shaped channel, and the second housing water channel 113 may include a second S-shaped channel. The first S-shaped channel and the second S-shaped channel can be circumferentially arranged on the motor housing 1 in the clockwise and counterclockwise directions respectively. By setting the S-shaped channel, the coverage area of the housing water channel 11 can be expanded, and the cooling efficiency can be improved.

[0050] In one embodiment, the first water-cooling channel 21 includes a first arc-shaped channel. One side of the first arc-shaped channel is connected to the first end winding 41 of the stator 4. The first end of the first arc-shaped channel is connected to the first end of the water inlet channel 111, and the second end of the first arc-shaped channel is connected to the first end of the first housing channel 112. The second water-cooling channel 31 includes a second arc-shaped channel. One side of the second arc-shaped channel is connected to the second end winding 42 of the stator 4. The second end of the second arc-shaped channel is connected to the second end of the water inlet channel 111, and the second end of the second arc-shaped channel is connected to the first end of the second housing channel 113.

[0051] As an example, the first water-cooling channel 21 includes a first arc-shaped channel. The first end of the first arc-shaped channel is connected to the first end of the water inlet channel 111, and the second end of the first arc-shaped channel is connected to the first end of the first housing channel 112. One side surface of the first arc-shaped channel is in contact with the first end winding 41 of the stator 4 to cool the first end winding 41 of the stator 4 through the cooling water in the first arc-shaped channel. The second water-cooling channel 31 includes a second arc-shaped channel. The first end of the second arc-shaped channel is connected to the second end of the water inlet channel 111, and the second end of the second arc-shaped channel is connected to the first end of the second housing channel 113. One side surface of the second arc-shaped channel is connected to the second end winding 42 of the stator 4 to cool the second end winding 42 of the stator 4 through the cooling water in the second arc-shaped channel. By providing the first arc-shaped channel and the second arc-shaped channel, the arrangement position of the stator 4 in the motor can be adapted, the contact area with the first end winding 41 and the second end winding 42 of the stator 4 can be increased, and the cooling efficiency can be improved.

[0052] In one embodiment, as Figure 1 shown, the first water-cooling structure 2 includes a first cover plate 22 and a first water-cooling plate 23. The first water-cooling plate 23 is connected to the first end winding 41 of the stator 4. The first cover plate 22 is arranged on the first water-cooling plate 23, and the first water-cooling plate 23 cooperates with the first cover plate 22 to form the first water-cooling channel 21. The second water-cooling structure 3 includes a second cover plate 32 and a second water-cooling plate 33. The second water-cooling plate 33 is connected to the second end winding 42 of the stator 4. The second cover plate 32 is arranged on the second water-cooling plate 33, and the second water-cooling plate 33 cooperates with the second cover plate 32 to form the second water-cooling channel 31.

[0053] As an example, the first water cooling structure 2 includes a first cover plate 22 and a first water cooling plate 23. The first water cooling plate 23 abuts against the first end winding 41 of the stator 4 to improve the heat transfer efficiency. The first cover plate 22 covers the first water cooling plate 23 to cooperate to form a first water cooling channel 21. Similarly, the second water cooling plate 33 abuts against the second end winding 42 of the stator 4 to improve the heat transfer efficiency. The second cover plate 32 covers the second water cooling plate 33 to cooperate to form a second water cooling channel 31, so as to cool the second end winding 42 of the stator 4 through the cooling water in the second water cooling channel 31.

[0054] In an embodiment, the motor housing 1 includes a first opening and a second opening oppositely arranged along the axial direction of the stator 4; the motor cooling structure further includes a first end cover 5 and a second end cover 6; the first end cover 5 covers the first opening of the motor housing 1 and is sleeved on the first end of the motor shaft 7, and the first end cover 5 is oppositely arranged with the first cover plate 22; the second end cover 6 covers the second opening of the motor housing 1 and is sleeved on the second end of the motor shaft 7, and the second end cover 6 is oppositely arranged with the second cover plate 32.

[0055] As an example, the motor housing 1 has a first opening and a second opening oppositely arranged along the axial direction of the stator 4, and the motor cooling structure further includes a first end cover 5 and a second end cover 6. The first end cover 5 covers the first opening of the motor housing 1, and the second end cover 6 covers the second opening of the motor housing 1, covering the first water cooling structure 2 and the second water cooling structure 3 in the motor cooling structure inside the first end cover 5 and the second end cover 6 to protect the motor and the motor cooling structure. A first mounting position is further provided on the side surface of the first end cover 5 close to the rotor, and a central through hole for accommodating the motor shaft 7 in the rotor to pass through is further provided on the second end cover 6. The first end of the motor shaft 7 is rotatably connected to the first end cover 5 sleeved outside the motor shaft 7 through a first bearing arranged in the first mounting position, and the second end of the motor shaft 7 is rotatably connected to the second end cover 6 sleeved outside the motor shaft 7 through a second bearing arranged in the central through hole, forming a rotatable connection structure between the stator and the rotor.

[0056] In an embodiment, a first sealing structure is provided between the first water cooling channel 21 and the housing water channel 11, and / or a first sealing structure is provided between the second water cooling channel 31 and the housing water channel 11; a second sealing structure is provided between the first water cooling plate 23 and the first cover plate 22, and / or a second sealing structure is provided between the second water cooling plate 33 and the second cover plate 32.

[0057] As an example, a first sealing structure is provided between the first water-cooling channel 21 and the housing water channel 11, that is, a first sealing structure is provided at the connection between the first end of the first water-cooling channel 21 and the water inlet channel 111, and a first sealing structure may be provided at the connection between the second end of the first water-cooling channel 21 and the first housing water channel 112. Similarly, a first sealing structure is provided between the second water-cooling channel 31 and the housing water channel 11, that is, a first sealing structure is provided at the connection between the first end of the second water-cooling channel 31 and the water inlet channel 111, and a first sealing structure may also be provided at the connection between the second end of the second water-cooling channel 31 and the second housing water channel 113. The first sealing structure may be a sealing structure formed by an O-ring seal or a sealing structure formed by caulking. Since the sizes and shapes of the connections between the first water-cooling channel 21 and the housing water channel 11 and between the second water-cooling channel 31 and the housing water channel 11 are basically the same, basically the same first sealing structure can be used for sealing.

[0058] A second sealing structure may be provided at the covering joint of the first water-cooling plate 23 and the first cover plate 22; a second sealing structure may also be provided at the covering joint of the second water-cooling plate 33 and the second cover plate 32. The second sealing structure may also be a sealing structure formed by an O-ring seal or a sealing structure formed by caulking. By providing the first sealing structure and the second sealing structure at the above-mentioned connections, a sealing effect can be formed on the water channel to prevent the cooling water from flowing out of the water channel and damaging the motor.

[0059] In an embodiment, a first heat dissipation member 8 is provided on one side of the first water-cooling plate 23 close to the first cover plate 22, and / or a second heat dissipation member is provided on one side of the second water-cooling plate 33 close to the second cover plate 32.

[0060] As an example, as Figure 3 shown, taking the first water-cooling plate 23 as an example, a first heat dissipation member 8 may be provided on one side of the first water-cooling plate 23 away from the first end winding 41. Similarly, a second heat dissipation member may be provided on one side of the second water-cooling plate 33 away from the second end winding 42. The first heat dissipation member 8 may be a heat dissipation protrusion extending from the first water-cooling plate 23, and the second heat dissipation member may also be a heat dissipation protrusion extending from the first water-cooling plate 23. The heat dissipation protrusion may be a cylindrical protrusion for expanding the contact area with the cooling water and improving the heat dissipation efficiency of the end of the stator 4.

[0061] In an embodiment, a first heat conducting member is provided on one side of the first water-cooling plate 23 away from the first cover plate 22, and / or a second heat conducting member is provided on one side of the second water-cooling plate 33 away from the second cover plate 32.

[0062] As an example, on the first water-cooling plate 23, a first heat-conducting member may be provided on one side close to the first end winding 41, and on the second water-cooling plate 33, a second heat-conducting member may be provided on one side close to the second end winding 42. The first heat-conducting member and the second heat-conducting member may be thermal conductive silicone grease to increase heat dissipation. The stator 4 in contact with the first water-cooling plate 23 and the second water-cooling plate 33 may also be coated with thermal conductive silicone grease to improve the heat transfer efficiency.

[0063] An embodiment of the present utility model provides a motor, such as Figure 1 shown, which includes a stator 4 and the motor cooling structure in any of the above embodiments; the stator 4 is arranged inside the motor housing 1; a first water-cooling structure 2 is connected to the first end winding 41 of the stator 4; a second water-cooling structure 3 is connected to the second end winding 42 of the stator 4.

[0064] As an example, the motor may include a motor housing 1, a stator 4 arranged inside the motor housing 1, and a rotor. The stator 4 specifically includes a stator core 43 and a stator winding. The stator winding is wound around the stator core, and the parts of the stator winding extending from both ends of the stator core 43 are respectively a first end winding 41 and a second end winding 42. The first water-cooling structure 2 in the motor cooling structure is connected to the first end winding 41 of the stator 4, and the second water-cooling structure 3 is connected to the second end winding 42 of the stator 4 to form cooling for the ends of the stator 4. When the motor cooling structure cools the motor, cooling water enters from the water inlet 12 on the housing water channel 11 of the motor housing 1, flows into the first water-cooling flow channel 21 and the second water-cooling flow channel 31 in two paths, and then re-converges into the housing water channel 11 and exits from the water outlet 13 to achieve water-cooling.

[0065] In this example, by providing the first water-cooling structure 2 and the second water-cooling structure 3 corresponding to the ends of the motor windings in the motor, the cooling water in the housing water channel 11 can be introduced into the first water-cooling flow channel 21 and the second water-cooling flow channel 31 located at the ends of the stator 4 to achieve cooling of the ends of the stator 4. The structure is simple and the cooling effect on the motor is better.

[0066] An embodiment of the present utility model also provides a vehicle, including the motor in the above embodiment.

[0067] As an example, the vehicle includes the motor in the above example. In this example, by providing the first water-cooling structure 2 and the second water-cooling structure 3 corresponding to the ends of the motor windings in the motor, the cooling water in the housing water channel 11 can be introduced into the first water-cooling flow channel 21 and the second water-cooling flow channel 31 located at the ends of the stator 4 to achieve cooling of the ends of the stator 4. The structure is simple and the cooling effect on the motor is better.

[0068] The above-described embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A motor cooling structure, characterized in that: It includes a motor housing, a first water-cooling structure and a second water-cooling structure; The motor housing is provided with a housing water channel, and the housing water channel is provided with a water inlet and a water outlet; The first water cooling structure is connected to the first end winding of the stator, and the first water cooling structure is provided with a first water cooling channel connected to the housing water channel; The second water-cooling structure is connected to the second end winding of the stator, and a second water-cooling channel communicating with the shell water channel is provided on the second water-cooling structure.

2. The motor cooling structure according to claim 1, characterized in that: The shell water channel includes an inlet water channel, a first shell water channel, a second shell water channel and an outlet water channel; The water inlet is provided on the water inlet channel, the water outlet is provided on the water outlet channel, and the first shell water channel and the second shell water channel are arranged in parallel between the water inlet channel and the water outlet channel; The first end of the first water-cooling channel is connected to the first end of the water inlet channel, the second end of the first water-cooling channel is connected to the first end of the first shell water channel, and the second end of the first shell water channel is connected to the water outlet channel; The first end of the second water-cooling channel is connected to the second end of the water inlet channel, the second end of the second water-cooling channel is connected to the first end of the second shell water channel, and the second end of the second shell water channel is connected to the water outlet channel.

3. The motor cooling structure according to claim 2, characterized in that: The first housing water channel and the second housing water channel are arranged on the motor housing along the circumferential direction of the motor; The first shell water channel and the second shell water channel both include S-shaped flow channels, and the S-shaped flow channels are arranged on the motor shell along the circumferential direction of the motor.

4. The motor cooling structure according to claim 2, characterized in that: The first water-cooling channel comprises a first arc-shaped channel, one side of the first arc-shaped channel is connected to the first end winding of the stator, a first end of the first arc-shaped channel is connected to the first end of the water inlet channel, and a second end of the first arc-shaped channel is connected to the first end of the first shell water channel; The second water-cooling channel includes a second arc-shaped channel, one side of the second arc-shaped channel is connected to the second end winding of the stator, the first end of the second arc-shaped channel is connected to the second end of the water inlet channel, and the second end of the second arc-shaped channel is connected to the first end of the second shell water channel.

5. The motor cooling structure according to claim 2, characterized in that: The first water cooling structure includes a first cover plate and a first water cooling plate; The first water cooling plate is connected to the first end winding of the stator; The first cover plate is disposed on the first water-cooling plate, and the first water-cooling plate cooperates with the first cover plate to form the first water-cooling flow channel; The second water-cooling structure includes a second cover plate and a second water-cooling plate; The second water cooling plate is connected to the second end winding of the stator; The second cover plate is disposed on the second water-cooling plate, and the second water-cooling plate cooperates with the second cover plate to form the second water-cooling flow channel.

6. The motor cooling structure according to claim 5, characterized in that: A first sealing structure is provided between the first water-cooling flow channel and the shell water channel, and / or a first sealing structure is provided between the second water-cooling flow channel and the shell water channel; A second sealing structure is provided between the first water-cooling plate and the first cover plate, and / or a second sealing structure is provided between the second water-cooling plate and the second cover plate.

7. The motor cooling structure according to claim 5, characterized in that: A first heat sink is disposed on a side surface of the first water-cooling plate close to the first cover plate, and / or a second heat sink is disposed on a side surface of the second water-cooling plate close to the second cover plate.

8. The motor cooling structure according to claim 5, characterized in that: A first heat conducting member is disposed on a side surface of the first water cooling plate away from the first cover plate, and / or a second heat conducting member is disposed on a side surface of the second water cooling plate away from the second cover plate.

9. A motor, characterized in that: Comprising a stator winding and a motor cooling structure according to any one of claims 1 to 8; The stator winding is arranged in the motor housing; The first water cooling structure is connected to the first end winding of the stator; The second water cooling structure is connected to the second end winding of the stator.

10. A vehicle, characterized in that: A motor comprising the motor described in claim 9.

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