Stator core end inclined spraying type oil cooling heat dissipation structure and motor

Abstract

The invention relates to a stator core end inclined spraying type oil cooling heat dissipation structure and a motor, and relates to the technical field of motor heat dissipation. The stator core end inclined spraying type oil cooling heat dissipation structure comprises a stator core, a stator winding and a heat dissipation frame, the stator winding is arranged in the stator core, an oil inlet is formed in the heat dissipation frame, a heat dissipation cavity is further formed in the heat dissipation frame, a plurality of spraying positions are further arranged on the side, close to the stator winding, of the heat dissipation frame in an extending mode, and the spraying positions are communicated with the oil inlet. The end of each spraying position is provided with an oil outlet hole, each oil outlet hole is communicated with the heat dissipation cavity and faces the stator winding, the side, away from the oil inlet, of each oil outlet hole is provided with a spoiler, and each spoiler is arranged in the heat dissipation cavity. The oil outlet structure has the effect of improving the oil outlet uniformity of all the oil outlet holes.

Description

Technical Field

[0001] The present application relates to the technical field of motor heat dissipation, and in particular to a stator core end inclined spray type oil cooling heat dissipation structure and a motor. Background Art

[0002] With the continuous development of society and economy and the increasing level of science and technology, my country's industry is also booming. Electric motors, as common components in transportation, national defense and other fields, have been widely used. However, as the load side's demand for rotating motor power levels and space volume increases, the power density of rotating motors continues to increase, and the heat flux density continues to increase. As a result, the heat dissipation requirements of high-power-density rotating motors continue to increase.

[0003] The prior art describes an oil-cooled heat dissipation structure with an inclined spray pattern at the end of the stator core. This structure comprises a stator core, stator windings, and a heat sink. The stator windings are disposed within the stator core. The heat sink is semi-annular and mounted at the end of the stator core. An oil inlet is defined at the top of the heat sink, and a heat dissipation cavity is defined within the heat sink, which is connected to the oil inlet. Several oil outlets are also defined on the side of the heat sink near the stator windings, which are connected to the heat dissipation cavity. During operation, a cooling medium (i.e., cooling oil) is introduced into the oil inlet. The introduced cooling oil then flows out through the various oil outlets, where it falls onto the stator windings, cooling them.

[0004] Regarding the above-mentioned related technologies, since the heat sink is arranged in a semi-circular shape and a single oil inlet is only arranged at the top of the heat sink, the cooling oil can only flow along the inner wall of the heat dissipation cavity under the action of gravity, and the diameter of the oil outlet is often small, which means that when the cooling oil flows, it can only briefly pass through the oil outlet located above and be deposited at the bottom of the heat dissipation cavity. This reduces the uniformity of the distribution of the cooling oil, and further reduces the uniformity of the oil output of each oil outlet, so it needs to be improved. Summary of the Invention

[0005] In order to improve the uniformity of oil output from each oil outlet, the present application provides a stator core end inclined spray type oil cooling and heat dissipation structure and a motor.

[0006] In the first aspect, the present application provides a stator core end inclined spray type oil cooling and heat dissipation structure, which adopts the following technical solutions: A stator core end inclined spray type oil cooling heat dissipation structure includes a stator core, a stator winding and a heat dissipation frame, the stator winding is arranged in the stator core, an oil inlet is provided on the heat dissipation frame, a heat dissipation cavity is also provided in the heat dissipation frame, a plurality of spray points are extended on the side of the heat dissipation frame close to the stator winding, an oil outlet hole is provided at the end of each spray point, each oil outlet hole is connected to the heat dissipation cavity and faces the stator winding, a baffle is provided on the side of each oil outlet hole away from the oil inlet, and each baffle is arranged in the heat dissipation cavity.

[0007] By adopting the above technical solution, compared with the existing technology, the cooling oil in the heat sink can only briefly pass through the oil outlet holes located above when flowing, and is deposited at the bottom of the heat dissipation cavity, which reduces the distribution uniformity of the cooling oil, and thus reduces the uniformity of oil output from each oil outlet hole; the present application sets a baffle so that the baffle can block the flowing cooling medium, and thus the blocked cooling medium stays near the corresponding oil outlet hole, thereby increasing the amount of cooling medium near each oil outlet hole, ensuring the amount of oil (cooling medium) output from each oil outlet hole, and thus effectively ensuring the oil output from the oil outlet hole located at the upper part of the heat dissipation cavity, thereby improving the oil output uniformity between each oil outlet hole, and effectively ensuring the cooling effect of the stator winding.

[0008] Preferably, the inner walls on both sides of the heat dissipation cavity along its own width direction and the intersection between the inner walls of the heat dissipation cavity with the oil outlet holes are provided with flow grooves to allow the cooling medium to circulate quickly.

[0009] By adopting the above technical solution and setting the circulation groove, the cooling medium in the heat dissipation cavity can enter the circulation groove after entering the circulation channel, so that the circulation groove guides the entering cooling medium, so that the cooling medium can flow along the extension direction of the circulation groove, and thus reach the vicinity of each oil outlet hole, effectively ensuring the amount of cooling medium near each oil outlet hole, and thus ensuring the uniformity of oil output between the oil outlet holes.

[0010] Preferably, a dispersion circulation portion is extended on the inner bottom wall of the heat dissipation cavity, and the dispersion circulation portion is located directly below the oil inlet and extends in a direction close to the oil inlet to form a protrusion. Two flow accumulation grooves are also provided on the side of the dispersion circulation portion close to the oil inlet, and the two flow accumulation grooves are respectively located on opposite sides of the oil inlet.

[0011] By adopting the above technical solution and setting up the dispersed circulation part, the cooling medium introduced through the oil inlet can flow into the two flow accumulation grooves through the outer wall of the protrusion when it falls on the protrusion on the dispersed circulation part, thereby realizing the diversion of the cooling medium, so that the cooling medium in the two flow accumulation grooves can flow into the two ends of the heat dissipation cavity respectively, thereby ensuring the uniformity of the distribution of the cooling medium in the two ends of the heat dissipation cavity.

[0012] Preferably, a first diversion groove and a second diversion groove are further provided on the top of the dispersed circulation portion, and the number of the first diversion grooves is set to be several, and the several first diversion grooves are respectively located on both sides of the dispersed circulation portion along the width direction of the heat dissipation cavity, and both ends are connected to the corresponding circulation grooves, and the second diversion groove is located between the several first diversion grooves, and both ends are extended to the side close to the oil outlet.

[0013] By adopting the above technical solution, the first diverter groove and the second diverter groove are set up so that the cooling medium in the accumulation groove can enter the first diverter groove and the second diverter groove, and a part of the cooling medium can directly enter the corresponding flow groove under the guidance of the first diverter groove, and a part of the cooling medium can flow to the vicinity of the top oil outlet under the guidance of the second diverter groove, and after being blocked by the corresponding baffle, flow to the channel between the baffle and the heat dissipation cavity, thereby ensuring the amount of cooling medium near the top oil outlet and the amount of cooling medium in the channel, thereby effectively ensuring the amount of cooling medium near each oil outlet, and thus ensuring the uniformity of oil output between the oil outlets.

[0014] Preferably, the stator core is arranged in a casing, an oil port is provided on the casing, the oil port is connected to the oil inlet, a buffer gasket is provided in the casing, the buffer gasket is located on the side of the heat sink away from the stator core, a fastening screw is also provided on the casing, one end of the fastening screw passes through the buffer gasket and the heat sink and reaches the stator core.

[0015] By adopting the above technical solution, the buffer gasket is set so that the buffer gasket can provide a buffer between the casing and the heat sink, thereby reducing the amplitude of the cooling medium in the heat sink caused by the collision between the heat sink and the casing when the motor is working, thereby ensuring the oil discharge effect of the oil outlet hole and the heat dissipation effect of the present application. At the same time, the buffer gasket can also reduce the shock of the heat sink, effectively ensuring the service life of the heat sink.

[0016] Preferably, a positioning frame is further provided in the casing, the positioning frame is located in the casing and is slidably connected to the casing, a positioning groove for the positioning frame to be embedded is provided on the outer wall of the stator core, and a linkage component is also provided in the casing, the linkage component is used to drive the positioning frame to slide when the stator core reaches a specified position, so that the positioning frame is embedded in the positioning groove.

[0017] By adopting the above technical solution, the positioning frame and the linkage assembly are arranged so that the linkage assembly can drive the positioning frame to slide when the stator core reaches the specified position, so that the positioning frame gradually approaches the stator core and is finally embedded in the positioning groove on the stator core, thereby achieving the positioning of the positioning core. At the same time, when the stator core is installed, the positioning core is prevented from being separated from the casing, thereby ensuring the smooth installation of the stator core.

[0018] Preferably, the linkage assembly includes a mounting frame and a linkage frame, the buffer gasket is embedded in the mounting frame, the mounting frame is slidingly connected to the housing, one end of the linkage frame is rotatably connected to the mounting frame, and the other end is slidingly connected to the positioning frame.

[0019] By adopting the above technical solution and arranging the linkage assembly, when the stator core is gradually installed in the casing and the mounting frame is pushed to slide, the mounting frame can drive the linkage frame to move, thereby causing the linkage frame to move away from one end of the mounting frame, driving the positioning frame to slide, and thus causing the positioning frame to be gradually inserted into the casing. Therefore, when the stator core is installed, the linkage frame can be driven, which effectively facilitates the operation of relevant personnel.

[0020] Preferably, both ends of each baffle along the width direction of the heat dissipation cavity leave gaps with the inner wall of the heat dissipation cavity along its own width direction, so as to form a channel for the cooling medium in the heat dissipation cavity to flow.

[0021] By adopting the above technical solution, the channel between the baffle and the heat dissipation cavity is set up, so that the cooling medium introduced through the oil inlet can flow along the channel at the intersection of the end of the heat dissipation cavity after entering the heat dissipation cavity, thereby reducing the probability of several baffles blocking the flow of cooling medium, allowing the cooling medium to flow smoothly to the vicinity of each oil outlet, thereby ensuring the uniformity of oil output between the oil outlet holes.

[0022] Preferably, each of the baffles is connected to the inner wall of the heat dissipation cavity where the oil outlet hole is provided, and both ends of each of the baffles along the width direction of the heat dissipation cavity are offset to a side close to the oil inlet.

[0023] By adopting the above technical solution, the specific setting of the baffle is such that the end box of the baffle is offset in the direction close to the oil inlet, thereby forming a space for the cooling medium to stay in the baffle and the heat dissipation cavity, effectively increasing the amount of cooling medium near each oil outlet hole, and at the same time increasing the residence time of the cooling medium near the oil outlet hole, effectively ensuring the oil output of the oil outlet hole, and thus ensuring the uniformity of oil output between the oil outlet holes.

[0024] On the other hand, the present application provides a motor that adopts the following technical solution: It includes the above-mentioned stator core end inclined spray type oil cooling and heat dissipation structure.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The baffle is set up so that it can block the flow of cooling medium, thereby causing the blocked cooling medium to stay near the corresponding oil outlet hole, thereby increasing the amount of cooling medium near each oil outlet hole, ensuring the oil (cooling medium) output of each oil outlet hole, and thus effectively ensuring the oil output of the oil outlet hole located at the top of the heat dissipation cavity, thereby improving the oil output uniformity between the oil outlet holes and effectively ensuring the cooling effect of the stator winding; 2. The buffer gasket is provided so that it can provide a buffer between the housing and the heat sink. This reduces the shaking of the cooling medium in the heat sink due to the collision between the heat sink and the housing when the motor is working, thereby ensuring the oil discharge effect of the oil outlet hole and the heat dissipation effect of the present application. At the same time, the buffer gasket can also reduce the vibration of the heat sink, effectively ensuring the service life of the heat sink. 3. The positioning frame and the linkage assembly are arranged so that the linkage assembly can drive the positioning frame to slide when the stator core reaches the specified position, so that the positioning frame gradually approaches the stator core and is finally embedded in the positioning groove on the stator core, thereby realizing the positioning of the positioning core. At the same time, it can also prevent the positioning core from detaching from the casing when the stator core is installed, thereby ensuring the smooth installation of the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram used to illustrate the overall inclined spray-type oil cooling and heat dissipation structure at the end of the stator core in an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the heat dissipation rack in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the spoiler used in the embodiment of the present application.

[0029] Figure 4 It is a schematic structural diagram used to illustrate the buffer gasket in the embodiment of the present application.

[0030] Explanation of the accompanying reference numerals: 1. stator core; 11. mounting portion; 2. stator winding; 3. heat sink; 31. spraying portion; 311. oil outlet; 32. baffle; 33. oil inlet; 34. dispersion circulation portion; 341. flow accumulation groove; 342. first diversion groove; 343. second diversion groove; 4. oil inlet; 5. heat dissipation cavity; 6. circulation groove; 7. casing; 71. positioning frame; 72. linkage assembly; 721. mounting frame; 722. linkage frame; 73. buffer gasket; 74. fastening screw; 8. oil port; 9. positioning groove. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a stator core end inclined spray type oil cooling and heat dissipation structure. Figure 1 、 Figure 2 and Figure 3 The stator core end-tilt spray-type oil cooling and heat dissipation structure includes a stator core 1, a stator winding 2, and a heat sink 3. The stator winding 2 is disposed within the stator core 1, and the heat sink 3 is provided with an oil inlet 4. A heat dissipation cavity 5 is also defined within the heat sink 3. Several spray points 31 extend from the side of the heat sink 3 proximate to the stator winding 2. Each spray point 31 has an oil outlet 311 at its end. Each oil outlet 311 communicates with the heat dissipation cavity 5 and faces the stator winding 2. A baffle 32 is provided on the side of each oil outlet 311 away from the oil inlet 4. Each baffle 32 is disposed within the heat dissipation cavity 5.

[0033] Reference Figure 1 and Figure 2 The stator core 1 is quasi-cylindrical, and the inner wall of the central cavity of the stator core 1 is provided with slots for winding the stator winding 2. The stator winding 2 is wound within the stator core 1. The length of the stator winding 2 along its axis is greater than the length of the stator core 1, so that both ends of the stator winding 2 extend beyond the ends of the stator core 1.

[0034] Reference Figure 2 Two mounting portions 11 extend from one end of the stator core 1 near the heat sink 3. One end of each mounting portion 11 is integrally formed with the stator core 1. The two mounting portions 11 correspond to the two ends of the heat sink 3 in the extension direction, and the other end of each mounting portion 11 passes through the end of the heat sink 3 to achieve positioning between the heat sink 3 and the stator core 1.

[0035] Reference Figure 2 and Figure 3An oil inlet 33 extends from the top of the heat sink 3 toward the end away from the stator core 1. An oil inlet 4 is formed on the oil inlet 33 and communicates with the heat dissipation cavity 5 within the heat sink 3. A dispersing flow portion 34 extends from the bottom wall of the heat dissipation cavity 5, located directly below the oil inlet 4. The dispersing flow portion 34 is integrally formed with the heat sink 3. The top of the dispersing flow portion 34 protrudes upward to form a protrusion. This allows the cooling medium (i.e., cooling oil) introduced through the oil inlet 4 to flow toward both ends of the heat dissipation cavity 5 when it reaches the protrusion of the dispersing flow portion 34.

[0036] Reference Figure 2 and Figure 3 Two flow accumulation grooves 341 are further defined on the side of the dispersing and circulating portion 34 near the oil inlet 4. The two flow accumulation grooves 341 are located on opposite sides of the oil inlet 4 along the extension direction of the heat dissipation cavity 5. A first diversion groove 342 and a second diversion groove 343 are further defined on the top of the dispersing and circulating portion 34. There are a plurality of first diversion grooves 342, and in the embodiment of the present application, there are two first diversion grooves 342.

[0037] Reference Figure 2 and Figure 3 The two first diverter grooves 342 are located on either side of the dispersing and circulating portion 34 along the width of the heat dissipating cavity 5. The second diverter groove 343 is located between the two second diverter grooves 343. One end of each of the second diverter grooves 343 and each first diverter groove 342 extends from one end of the dispersing and circulating portion 34, through the top of the flow accumulation groove 341 and the protrusion of the dispersing and circulating portion 34, to the top of the other flow accumulation groove 341, and finally to the other end of the dispersing and circulating portion 34, so that the second diverter groove 343 and the first diverter groove 342 can guide the cooling medium in the flow accumulation groove 341.

[0038] Reference Figure 2 and Figure 3 Circulation grooves 6 are formed at the intersection of the inner sidewalls of the heat dissipation cavity 5 along its width and the inner wall (i.e., the inner bottom wall) of the heat dissipation cavity 5 where the oil outlet holes 311 are formed. Each circulation groove 6 extends along the extension direction of the heat dissipation cavity 5, thereby reaching both ends of the heat dissipation cavity 5. Each circulation groove 6 is connected to the corresponding first diversion groove 342, so that the cooling medium in the accumulation groove 341 can quickly flow along the circulation groove 6 and the first diversion groove 342 to the end of the heat dissipation cavity 5.

[0039] Reference Figure 2 and Figure 3 Both ends of the second diversion groove 343 extend toward the top oil outlet hole 311 , so that part of the cooling medium in the accumulation groove 341 flows to the vicinity of the top oil outlet hole 311 , thereby ensuring the amount of cooling medium near the top oil outlet hole 311 .

[0040] Reference Figure 2 and Figure 3 Each spraying point 31 is arranged to extend obliquely toward the stator winding 2 , and the extension direction is offset from the vertical direction to achieve oblique spraying of the stator winding 2 .

[0041] Reference Figure 2 and Figure 3 Each baffle 32 is integrally formed with the inner bottom wall of the heat dissipation cavity 5 to achieve connection and effectively block the flow of the cooling medium. Each baffle 32, at both ends along the width of the heat dissipation cavity 5, is offset toward the side closer to the oil inlet 4 to enhance the blocking effect. Each baffle 32, at both ends along the width of the heat dissipation cavity 5, is spaced a certain distance from the corresponding inner sidewall of the heat dissipation cavity 5 and is adjacent to the corresponding flow groove 6 to form a flow channel. This allows the cooling medium in the corresponding flow groove 6 to overflow into the space formed by the baffle 32 and the inner bottom wall of the heat dissipation cavity 5, and then exit through the corresponding oil outlet 311.

[0042] Reference Figure 1 and Figure 2 A housing 7 is disposed outside the stator core 1 and is sleeved thereon. An oil port 8 is provided at one end of the housing 7 along its axis. One end of the oil inlet 33 extends into the oil port 8 to facilitate the circulation of the cooling medium. A positioning frame 71 and a linkage assembly 72 are also disposed within the housing 7. The linkage assembly 72 includes a mounting frame 721 and a linkage frame 722.

[0043] Reference Figure 1 、 Figure 2 and Figure 4 The mounting frame 721 is located on the side of the heat sink 3 away from the stator core 1. One end of the mounting frame 721 is embedded in the inner wall of the housing 7 and is slidably connected to the housing 7, with the sliding direction being the axial direction of the housing 7. The side of the mounting frame 721 away from the heat sink 3 is placed in contact with the inner wall of the housing 7. The side of the mounting frame 721 close to the heat sink 3 is also embedded with a buffer gasket 73. In this embodiment of the present application, the area of the buffer gasket 73 is slightly larger than that of the heat sink 3.

[0044] Reference Figure 1 、 Figure 2 and Figure 4 One side of the buffer gasket 73 is placed in contact with the heat sink 3. In this embodiment, the buffer gasket 73 is made of rubber to fully cushion and reduce shock to the heat sink 3. The buffer gasket 73 and the mounting frame 721 are both provided with holes for the mounting portion 11 to pass through, so that the mounting portion 11 can enter the inner wall of the housing 7 after passing through the heat sink 3, the buffer gasket 73, and the mounting frame 721.

[0045] Reference Figure 1 、 Figure 2 and Figure 4 , fastening screws 74 are also provided on the casing 7. In the embodiment of the present application, the number of fastening screws 74 is set to two, and they are arranged one-to-one corresponding to the mounting parts 11. Each fastening screw 74 extends from the end outside the casing 7 to the inside of the casing 7, and finally reaches the corresponding mounting part 11, and is threadedly connected to the mounting part 11 to achieve fixation between the stator core 1, the heat sink 3, the buffer gasket 73 and the mounting frame 721.

[0046] Reference Figure 1 and Figure 2 In this embodiment of the present application, there are two linkage frames 722, one located on opposite sides of the positioning frame 71. One end of each linkage frame 722 is pivotally connected to the portion of the mounting frame 721 extending into the inner wall of the housing 7 via a pin, and the other end is pivotally connected to the positioning frame 71 via a pin. The positioning frame 71 is located within the inner wall of the housing 7 and is slidably connected to the inner wall of the housing 7, with the sliding direction being perpendicular to the axis of the housing 7.

[0047] Reference Figure 1 and Figure 2 The sliding path of the positioning frame 71 extends into the cavity in the housing 7 so that the stator core 1 can be located on the sliding path of the positioning frame 71. A positioning groove 9 for the positioning frame 71 to be embedded is also provided on the outer wall of the stator core 1.

[0048] Reference Figure 1 、 Figure 2 and Figure 4 After the buffering gasket 73 is embedded in the mounting frame 721, the holes on the heat sink 3 are aligned with the mounting portion 11 of the stator core 1 wound with the stator winding 2, thereby assembling the heat sink 3 and the stator core 1. The heat sink 3 and the stator core 1 are then embedded together in the housing 7, with the mounting portion 11 on the stator core 1 inserted into the corresponding holes and the mounting frame 721 abutting against the inner wall of the housing 7.

[0049] Reference Figure 1 and Figure 2 During this process, the mounting frame 721 slides, causing the mounting frame 721 to drive the linkage frame 722 to move. This in turn causes the linkage frame 722 to move away from one end of the mounting frame 721, driving the positioning frame 71 to slide. The end of the positioning frame 71 gradually inserts into the positioning slot 9 on the stator core 1, repositioning the stator core 1 and preventing it from completely separating from the housing 7. Afterwards, the housing 7 is fixed to the mounting portion 11 by tightening screws 74, completing the installation.

[0050] The implementation principle of the inclined spray-type oil-cooled heat dissipation structure at the end of the stator core in the embodiment of the present application is as follows: when the cooling medium (i.e., cooling oil) is introduced into the oil inlet 4, the cooling medium falls to the top of the dispersed circulation portion 34 and flows into the two flow accumulation grooves 341. Thereafter, the cooling medium flows through the first diverter groove 342 and the second diverter groove 343, gradually flowing toward the direction close to the oil outlet hole 311. The cooling medium in the second diverter groove 343 flows to the vicinity of the topmost oil outlet hole 311, and the cooling medium in the first diverter groove 342 flows to the corresponding flow groove 6, thereby approaching each oil outlet hole 311 through the flow groove 6, and under the obstruction of the baffle 32, the cooling medium outflow amount of each oil outlet hole 311 is guaranteed, thereby ensuring the spray uniformity of the oil outlet hole 311.

[0051] The present application also provides a motor. Figure 1 and Figure 2 The motor includes a housing 7 and the aforementioned stator core end tilted spray-type oil cooling and heat dissipation structure. The stator core 1 in the stator core end tilted spray-type oil cooling and heat dissipation structure is fixedly connected to the housing 7 by fastening screws 74 to achieve fixation between the stator core 1 and the housing 7. In the embodiment of the present application, the stator core 1 in the stator core end tilted spray-type oil cooling and heat dissipation structure is further fixed to the housing 7 by several screws at the end away from the heat dissipation frame 3 to increase stability.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A stator core end inclined spray type oil cooling and heat dissipation structure, comprising a stator core (1), a stator winding (2) and a heat dissipation frame (3), wherein the stator winding (2) is arranged in the stator core (1), and an oil inlet (4) is provided on the heat dissipation frame (3), characterized in that: A heat dissipation cavity (5) is further provided in the heat dissipation frame (3). A plurality of spraying points (31) are further extended from a side of the heat dissipation frame (3) close to the stator winding (2). An oil outlet hole (311) is provided at the end of each spraying point (31). Each oil outlet hole (311) is in communication with the heat dissipation cavity (5) and faces the stator winding (2). A baffle (32) is provided on a side of each oil outlet hole (311) away from the oil inlet (4). Each baffle (32) is provided in the heat dissipation cavity (5).

2. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 1, characterized in that: The inner walls of the heat dissipation cavity (5) on both sides along its width direction and the intersection between the inner wall of the heat dissipation cavity (5) on which the oil outlet hole (311) is provided are both provided with circulation grooves (6) for rapid circulation of the cooling medium.

3. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 2, characterized in that: A dispersion circulation portion (34) is further extended on the inner bottom wall of the heat dissipation cavity (5). The dispersion circulation portion (34) is located directly below the oil inlet (4) and extends in a direction close to the oil inlet (4) to form a protrusion. Two flow accumulation grooves (341) are further provided on a side of the dispersion circulation portion (34) close to the oil inlet (4). The two flow accumulation grooves (341) are respectively located on opposite sides of the oil inlet (4).

4. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 3, characterized in that: The top of the dispersion circulation portion (34) is further provided with a first diversion groove (342) and a second diversion groove (343). The number of the first diversion grooves (342) is set to be several. The several first diversion grooves (342) are respectively located on both sides of the dispersion circulation portion (34) along the width direction of the heat dissipation cavity (5), and both ends are connected to the corresponding circulation groove (6). The second diversion groove (343) is located between the several first diversion grooves (342), and both ends are extended to the side close to the oil outlet (311).

5. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 1, characterized in that: The stator core (1) is used to be arranged in a casing (7); an oil passage (8) is also provided on the casing (7); the oil passage (8) is communicated with the oil inlet (4); a buffer gasket (73) is also provided in the casing (7); the buffer gasket (73) is located on a side of the heat sink (3) away from the stator core (1); a fastening screw (74) is also provided on the casing (7); one end of the fastening screw (74) passes through the buffer gasket (73) and the heat sink (3) and reaches the stator core (1).

6. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 5, characterized in that: A positioning frame (71) is further provided in the housing (7), the positioning frame (71) is located in the housing (7) and is slidably connected to the housing (7), a positioning groove (9) for embedding the positioning frame (71) is provided on the outer wall of the stator core (1), and a linkage assembly (72) is further provided in the housing (7), the linkage assembly (72) is used to drive the positioning frame (71) to slide when the stator core (1) reaches a specified position, so that the positioning frame (71) is embedded in the positioning groove (9).

7. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 6, characterized in that: The linkage assembly (72) comprises a mounting frame (721) and a linkage frame (722); the buffer gasket (73) is embedded in the mounting frame (721); the mounting frame (721) is slidably connected to the housing (7); one end of the linkage frame (722) is rotatably connected to the mounting frame (721); and the other end is slidably connected to the positioning frame (71).

8. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 1, characterized in that: Each of the baffles (32) has gaps at both ends along the width direction of the heat dissipation cavity (5) and the inner wall of the heat dissipation cavity (5) at the corresponding end along its own width direction, so as to form a channel for the cooling medium in the heat dissipation cavity (5) to circulate.

9. The stator core end inclined spray type oil cooling and heat dissipation structure according to claim 1, characterized in that: Each of the baffles (32) is connected to the inner wall of the heat dissipation cavity (5) on which the oil outlet hole (311) is provided. Both ends of each of the baffles (32) along the width direction of the heat dissipation cavity (5) are offset toward a side close to the oil inlet (4).

10. A motor, characterized in that: It comprises the stator core end inclined spray type oil cooling and heat dissipation structure as described in any one of claims 1-9.

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