A coreless motor with heat dissipation function

Abstract

The present invention discloses a coreless cup motor with a heat dissipation function, and aims to provide a coreless cup motor with a heat dissipation function that is beneficial to improving the heat dissipation speed. The coreless cup motor includes a motor body, a cooling channel is arranged in the motor body, an outer cover is arranged at the end of the motor body, one end of the outer cover is connected to the motor body and is provided with a plurality of air outlets, and the plurality of air outlets are evenly distributed with the motor body as the center, an air inlet is arranged at the other end of the outer cover, an oil pump box and a cooling plate are arranged in the outer cover, a rotating shaft is arranged on the motor body, a fan is detachably mounted on the rotating shaft, the fan is located in the outer cover and corresponds to the air inlet, the cooling plate is located between the fan and the air inlet and is connected to the outer cover, and one end of the cooling channel is connected to the other end of the cooling channel through the oil pump box and the interior of the cooling plate in turn. The beneficial effect of the present invention is that the coreless cup motor in the present invention dissipates heat simultaneously inside and outside the motor body under the joint action of the fan and the oil, thereby improving the heat dissipation speed.

Description

Technical Field

[0001] The present invention relates to the technical field related to coreless cup motors, and in particular to a coreless cup motor with a heat dissipation function. Background Art

[0002] At present, the hollow cup motor has broken through the rotor structure of traditional motors in structure. It adopts a coreless rotor, also called a hollow cup rotor. The hollow cup motor has been widely promoted and applied in the fields of medical equipment, robots, small automation equipment, etc. due to its high performance, high efficiency, compact structure and other advantages. However, the current hollow cup motor has a closed motor housing and end cover, so the heat generated by the motor during operation cannot be discharged in time and can only be dissipated through the surface of the motor housing. The heat dissipation effect is not ideal, and the motor is prone to overheating, which affects the life of the motor.

[0003] The Chinese patent number is CN212850139U, and the authorization announcement date is March 30, 2021. It discloses a small hollow cup motor with heat dissipation function, including a hollow cup motor and a heat dissipation mechanism. A groove is provided at the bottom of the hollow cup motor, and the heat dissipation mechanism is fixedly installed at the bottom of the hollow cup motor. The heat dissipation mechanism includes a box, a solid plate, a plurality of elastic columns, a plurality of circular grooves, a mounting plate, two fans and a plurality of circular holes. The outer wall of the solid plate is fixedly installed on the top of the box, and a plurality of elastic columns are fixedly installed on the top of the solid plate. A plurality of circular grooves are opened at the top of the solid plate. This hollow cup motor with heat dissipation function is provided with a heat dissipation mechanism at the bottom of the hollow cup motor, wherein two fans and a plurality of circular holes are provided in the heat dissipation mechanism. When the fan is working, air will enter through the circular hole, discharge the hot air in the hollow cup motor, dissipate the heat inside the hollow cup motor, and protect the components of the hollow cup motor.

[0004] It can be seen from the above patent that in order to promote the heat dissipation of the motor, generally only a fan is used to dissipate the heat of the motor, which makes the heat dissipation effect limited and the heat dissipation speed average. Summary of the invention

[0005] The present invention aims to overcome the general insufficiency of heat dissipation speed of motors in the prior art and provides a coreless cup motor with heat dissipation function which is beneficial to improving the heat dissipation speed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A coreless cup motor with heat dissipation function comprises a motor body, a cooling channel is arranged in the motor body, an outer cover is arranged at the end of the motor body, one end of the outer cover is connected to the motor body and is provided with a plurality of air outlets, the plurality of air outlets are evenly distributed with the motor body as the center, an air inlet is arranged at the other end of the outer cover, an oil pump box and a cooling plate are arranged in the outer cover, a rotating shaft is arranged on the motor body, a fan is detachably mounted on the rotating shaft, the fan is located in the outer cover and corresponds to the air inlet, the cooling plate is located between the fan and the air inlet and is connected to the outer cover, and one end of the cooling channel is communicated with the other end of the cooling channel through the oil pump box and the interior of the cooling plate in turn.

[0008] A cooling channel is provided in the motor body, an outer cover is provided at the end of the motor body, one end of the outer cover is connected to the motor body and is provided with a plurality of air outlets, and the plurality of air outlets are evenly distributed around the motor body, an air inlet is provided at the other end of the outer cover, an oil pump box and a cooling plate are provided in the outer cover, a rotating shaft is provided on the motor body, a fan is detachably mounted on the rotating shaft, the fan is located in the outer cover and corresponds to the air inlet, the cooling plate is located between the fan and the air inlet and is connected to the outer cover, and one end of the cooling channel is communicated with the other end of the cooling channel through the oil pump box and the interior of the cooling plate in turn. When the motor body is working, the fan is driven to rotate through the rotating shaft. On the one hand, the fan draws air from the air inlet and dissipates heat to the outer surface of the motor body through the air outlet. On the other hand, the oil in the cooling channel dissipates heat to the inside of the motor body. After the oil absorbs heat, it is pumped into the cooling plate under the action of the oil pump box. Since the cooling plate is located between the fan and the air inlet, the cold air has a heat dissipation effect on the oil in the cooling plate while the fan draws air, so that the oil enters the cooling channel again after being cooled, and circulates in this way. Therefore, the hollow cup motor in the present invention dissipates heat to the inside and outside of the motor body at the same time under the joint action of the fan and the oil, thereby achieving the purpose of increasing the heat dissipation speed.

[0009] Preferably, the cooling plate is connected to the air inlet, and a plurality of air inlet channels are provided on the cooling plate. The plurality of air inlet channels are evenly distributed on the cooling plate in a rectangular array, and the air inlet is connected to the air outlet through the air inlet channel and the interior of the outer cover in turn. A plurality of capillary tubes are provided on the cooling plate, one side of the cooling plate is close to the fan, and the other side of the cooling plate corresponding to the fan is away from the fan, and the plurality of capillary tubes are evenly distributed along the side of the cooling plate close to the fan to the other side corresponding to the fan, one end of the plurality of capillary tubes are connected to the oil pump box, and the other ends of the plurality of capillary tubes are connected to the cooling channel, and the capillary tubes are an S-shaped structure formed by connecting a plurality of straight tubes end to end in sequence, the straight tubes are perpendicular to the air inlet channel, and the plurality of straight tubes are evenly distributed along the height direction of the cooling plate and are staggered with each row of air inlet channels. When the fan draws air from the air inlet, cold air enters the outer cover from several air inlet channels at the same time, and then blows to the surface of the motor body through the air outlet, which is beneficial to the heat dissipation of the motor body surface; the oil after absorbing heat enters several capillary tubes at the same time, which is beneficial to increase the heat dissipation area of ​​the oil and improve the heat dissipation speed; at the same time, the capillary tubes are S-shaped structures, which is beneficial to prolong the residence time of the oil in the cooling plate and improve the heat dissipation effect; several sections of straight pipes are evenly distributed along the height direction of the cooling plate and are staggered with each row of air inlet channels, so that the oil can fully conduct heat with the cold air, further improving the heat dissipation effect.

[0010] Preferably, the cooling plate is provided with an oil inlet box and an oil outlet box, one side of the oil inlet box is detachably connected to the cooling plate and communicated with one end of a plurality of capillary tubes, the other side of the oil inlet box is provided with an oil inlet pipe 1, the oil inlet box is detachably connected to the oil pump box through the oil inlet pipe 1, one side of the oil outlet box is detachably connected to the cooling plate and communicated with the other end of a plurality of capillary tubes, the other side of the oil outlet box is provided with an oil outlet pipe, the oil outlet box is detachably connected to the side wall of the motor body through the oil outlet pipe and communicated with the cooling channel. Under the action of the oil pump box, the oil inlet box facilitates the simultaneous pumping of the oil in the oil inlet pipe 1 into the plurality of capillary tubes for cooling, and the oil outlet box facilitates the simultaneous pumping of the oil in the plurality of capillary tubes into the oil outlet pipe, and the oil enters the cooling channel through the oil outlet pipe to dissipate the heat of the motor body.

[0011] Preferably, the oil pump box includes a box body, a driving gear and a driven gear, the box body is detachably connected to the end of the motor body, the fan is located between the box body and the cooling plate, the rotating shaft passes through the box body and is detachably connected to the fan, the driving gear and the driven gear are both located in the box body, the driving gear is detachably connected to the rotating shaft, the driven gear is meshed with the driving gear and is rotatably connected to the side wall of the box body, an oil inlet is provided on one side of the box body, and an oil outlet is provided on the other corresponding side of the box body, the oil inlet and the oil outlet both correspond to the meshing point of the driving gear and the driven gear, the oil inlet is connected to one end of the cooling channel, and the oil outlet is connected to the inside of the cooling plate. When the motor body is working, the driving gear is driven to rotate synchronously through the rotating shaft, and the oil in the cooling channel that has absorbed heat enters the box through the oil inlet, and then the oil is pumped into a plurality of capillary tubes for cooling through the meshing transmission of the driving gear and the driven gear. The present invention can provide power for the circulation of the oil by using the power output by the motor body itself, without the need for an additional booster pump, which is beneficial to saving energy and cost, and has a simple structure.

[0012] Preferably, the portion of the rotating shaft that passes through the box body is connected to the box body in a sealed and rotatable manner, which is helpful in preventing the oil in the box body from leaking out.

[0013] Preferably, the motor body includes a casing, a stator and a rotor. The outside of the stator is sealed and connected to the casing and is provided with a cooling groove. The cooling channel is composed of the cooling groove and the side wall of the casing. The rotor is located in the stator. One end of the rotor is provided with a power shaft. The rotor is rotatably connected to one end of the casing through the power shaft. One end of the power shaft is connected to the rotor. The other end of the power shaft passes through the casing and is suspended outside the casing. The rotating shaft is connected to the other end of the rotor. The rotor is rotatably connected to the other end of the casing through the rotating shaft. The cooling groove is arranged on the surface of the stator, which is conducive to heat dissipation inside the motor body. When the rotor is working, the rotating shaft rotates synchronously while the power is output through the power shaft, so that the power of the rotor itself can be used to drive the driving gear and the fan to rotate synchronously, which is convenient for heat dissipation and helps save energy and space.

[0014] Preferably, the cooling groove is spirally distributed on the surface of the stator, and the casing is provided with an oil inlet pipe 2, one end of which is detachably connected to the casing and communicated with one end of the cooling groove, and the other end of which passes through the outer cover and is connected to the oil inlet box through the oil pump box and the oil inlet pipe 2 in sequence, and one end of the oil outlet pipe is detachably connected to the casing and communicated with the other end of the cooling groove, and the other end of the oil outlet pipe passes through the outer cover and is connected to the oil outlet box. The cooling groove is spirally distributed on the surface of the stator, which is convenient for comprehensive heat dissipation of the interior of the motor body, increases the contact area between the motor body and the oil, and thus helps to improve the heat dissipation effect.

[0015] Preferably, the portion of the oil inlet pipe 2 that passes through the outer cover is sealed and connected to the outer cover, and the portion of the oil outlet pipe that passes through the outer cover is sealed and connected to the outer cover. This is beneficial for the fan to completely blow out cold air from the air outlet after sucking air from the air inlet, which is beneficial for improving the heat dissipation effect on the surface of the motor body.

[0016] Preferably, the surface of the housing is provided with a plurality of evenly distributed fins, the fins are parallel to the length direction of the housing, and the fins are fixedly connected to the housing. The design of the fins is conducive to further improving the heat dissipation effect.

[0017] Preferably, a plurality of fins and a plurality of air outlets are arranged at intervals and staggered around the casing to form a ring structure. This design makes it possible for the wind blown out from the air outlets to not only promote the heat dissipation of the casing surface, but also promote the rapid heat dissipation of the surface after the fins absorb heat.

[0018] The beneficial effects of the present invention are as follows: the hollow cup motor in the present invention dissipates heat inside and outside the motor body simultaneously under the joint action of the fan and the oil, thereby achieving the purpose of increasing the heat dissipation speed; it is beneficial to increase the heat dissipation area of ​​the oil, and at the same time it is beneficial to prolong the residence time of the oil in the cooling plate, the oil can fully conduct heat with the cold air, and further improve the heat dissipation effect; the present invention utilizes the power output by the motor body itself to provide power for the circulation of the oil, without the need for an additional booster pump, which is beneficial to saving energy and cost, and has a simple structure; it is beneficial to prevent the oil in the box from leaking out; the cooling grooves are spirally distributed on the stator surface, which is convenient for comprehensive heat dissipation of the interior of the motor body, and increases the contact area between the motor body and the oil, thereby helping to improve the heat dissipation effect; the wind blown out from the air outlet is not only beneficial to promoting the heat dissipation of the casing surface, but also promotes the rapid heat dissipation of the surface of the fins after absorbing heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 yes Figure 1 Right view of;

[0022] Figure 4 Schematic diagram of the longitudinal cross-sectional structure of the cooling plate;

[0023] Figure 5 is a schematic diagram of the transverse cross-sectional structure of the cooling plate;

[0024] Figure 6 yes Figure 1 Left view of .

[0025] In the figure: 1. motor body, 2. cooling channel, 3. outer cover, 4. air outlet, 5. air inlet, 6. oil pump box, 7. cooling plate, 8. rotating shaft, 9. fan, 10. air inlet channel, 11. capillary tube, 12. straight pipe, 13. oil inlet box, 14. oil outlet box, 15. oil inlet pipe 1, 16. oil outlet pipe, 17. box body, 18. driving gear, 19. driven gear, 20. oil inlet, 21. oil outlet, 22. casing, 23. stator, 24. rotor, 25. cooling groove, 26. power shaft, 27. oil inlet pipe 2, 28. fin. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] like Figure 1 and Figure 2 In the described embodiment, a coreless cup motor with heat dissipation function includes a motor body 1, a cooling channel 2 is provided in the motor body 1, an outer cover 3 is provided at the end of the motor body 1, one end of the outer cover 3 is connected to the motor body 1 and is provided with a plurality of air outlets 4, and the plurality of air outlets 4 are evenly distributed with the motor body 1 as the center, an air inlet 5 is provided at the other end of the outer cover 3, an oil pump box 6 and a cooling plate 7 are provided in the outer cover 3, a rotating shaft 8 is provided on the motor body 1, a fan 9 is detachably mounted on the rotating shaft 8, the fan 9 is located in the outer cover 3 and corresponds to the air inlet 5, the cooling plate 7 is located between the fan 9 and the air inlet 5 and is connected to the outer cover 3, and one end of the cooling channel 2 is connected to the other end of the cooling channel 2 through the inside of the oil pump box 6 and the cooling plate 7 in turn.

[0028] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the cooling plate 7 is connected to the air inlet 5, and a plurality of air inlet channels 10 are provided on the cooling plate 7. The plurality of air inlet channels 10 are evenly distributed on the cooling plate 7 in a rectangular array. The air inlet 5 is connected with the air outlet 4 through the air inlet channel 10 and the inside of the outer cover 3 in turn. A plurality of capillary tubes 11 are provided on the cooling plate 7. One side of the cooling plate 7 is close to the fan 9, and the other side of the cooling plate 7 is away from the fan 9. The plurality of capillary tubes 11 are evenly distributed along the side of the cooling plate 7 close to the fan 9 to the other side thereof. One ends of the plurality of capillary tubes 11 are connected to the oil pump box 6, and the other ends of the plurality of capillary tubes 11 are connected to the cooling channel 2. The capillary tube 11 is an S-shaped structure formed by connecting a plurality of straight tubes 12 end to end in sequence. The straight tubes 12 are perpendicular to the air inlet channel 10, and the plurality of straight tubes 12 are evenly distributed along the height direction of the cooling plate 7 and are staggered with each row of air inlet channels 10 at intervals.

[0029] like Figure 1 and Figure 2 As shown, an oil inlet box 13 and an oil outlet box 14 are provided on the cooling plate 7, one side of the oil inlet box 13 is detachably connected to the cooling plate 7 and is communicated with one end of a plurality of capillary tubes 11, and the other side corresponding to the oil inlet box 13 is provided with an oil inlet pipe 15, the oil inlet box 13 is detachably connected to the oil pump box 6 through the oil inlet pipe 15, one side of the oil outlet box 14 is detachably connected to the cooling plate 7 and is communicated with the other end of a plurality of capillary tubes 11, and the other side corresponding to the oil outlet box 14 is provided with an oil outlet pipe 16, the oil outlet box 14 is detachably connected to the side wall of the motor body 1 through the oil outlet pipe 16 and is communicated with the cooling channel 2.

[0030] like Figure 1 and Figure 2 As shown, the oil pump box 6 includes a box body 17, a driving gear 18 and a driven gear 19. The box body 17 is detachably connected to the end of the motor body 1. The fan 9 is located between the box body 17 and the cooling plate 7. The rotating shaft 8 penetrates the box body 17 and is detachably connected to the fan 9. The driving gear 18 and the driven gear 19 are both located in the box body 17. The driving gear 18 is detachably connected to the rotating shaft 8. The driven gear 19 meshes with the driving gear 18 and is rotatably connected to the side wall of the box body 17. An oil inlet 20 is provided on one side of the box body 17, and an oil outlet 21 is provided on the other side of the box body 17. The oil inlet 20 and the oil outlet 21 both correspond to the meshing position of the driving gear 18 and the driven gear 19. The oil inlet 20 is connected to one end of the cooling channel 2, and the oil outlet 21 is connected to the inside of the cooling plate 7. The part of the rotating shaft 8 that penetrates the box body 17 is sealed and rotatably connected to the box body 17.

[0031] like Figure 1 and Figure 2 As shown, the motor body 1 includes a casing 22, a stator 23 and a rotor 24. The outside of the stator 23 is sealed and connected to the casing 22 and is provided with a cooling groove 25. The cooling channel 2 is composed of the cooling groove 25 and the side wall of the casing 22. The rotor 24 is located in the stator 23. A power shaft 26 is provided at one end of the rotor 24. The rotor 24 is rotatably connected to one end of the casing 22 through the power shaft 26. One end of the power shaft 26 is connected to the rotor 24. The other end of the power shaft 26 passes through the casing 22 and is suspended outside the casing 22. The rotating shaft 8 is connected to the other end of the rotor 24. The rotor 24 is rotatably connected to the other end of the casing 22 through the rotating shaft 8.

[0032] like Figure 1 and Figure 2As shown, the cooling groove 25 is spirally distributed on the surface of the stator 23, and the housing 22 is provided with an oil inlet pipe 27, one end of which is detachably connected to the housing 22 and communicated with one end of the cooling groove 25, and the other end of the oil inlet pipe 27 passes through the outer cover 3 and then sequentially passes through the oil pump box 6 and the oil inlet pipe 27 to communicate with the oil inlet box 13, one end of the oil outlet pipe 16 is detachably connected to the housing 22 and communicated with the other end of the cooling groove 25, and the other end of the oil outlet pipe 16 passes through the outer cover 3 and then communicates with the oil outlet box 14. The portion of the oil inlet pipe 27 passing through the outer cover 3 is sealed and connected to the outer cover 3, and the portion of the oil outlet pipe 16 passing through the outer cover 3 is sealed and connected to the outer cover 3.

[0033] like Figure 1 and Figure 2 As shown, a plurality of evenly distributed fins 28 are provided on the surface of the housing 22 . The fins 28 and the length direction of the housing 22 are parallel to each other, and the fins 28 are fixedly connected to the housing 22 .

[0034] like Figure 6 As shown, a plurality of fins 28 and a plurality of air outlets 4 are arranged alternately and at intervals with the housing 22 as the center to form an annular structure.

[0035] When the motor body 1 is working, the rotating shaft 8 drives the driving gear 18 and the fan 9 to rotate synchronously; the fan 9 draws air from the air inlet 5, and the cold air enters the outer cover 3 from several air inlet channels 10 at the same time, and then blows to the surface of the casing 22 and the fin 28 through the air outlet 4, which is beneficial to the heat dissipation of the surface of the motor body 1; the heat-absorbing oil in the cooling channel 2 enters the box 17 through the oil inlet 20, and then the oil is pumped into several capillary tubes 11 through the meshing transmission of the driving gear 18 and the driven gear 19 to be cooled by the cold air in the air inlet channel 10; after the oil is cooled, it enters the cooling channel 2 again to circulate, so the hollow cup motor in the present invention dissipates heat inside and outside the motor body 1 at the same time under the joint action of the fan 9 and the oil, achieving the purpose of increasing the heat dissipation speed. The present invention uses the power output by the motor body 1 itself to provide power for the circulation of the oil, without the need to add an additional booster pump, which is beneficial to saving energy and cost, and has a simple structure.

Claims

1. A coreless motor with heat dissipation function, characterized in that: The invention comprises a motor body, wherein a cooling channel is arranged in the motor body, an outer cover is arranged at the end of the motor body, one end of the outer cover is connected to the motor body and is provided with a plurality of air outlets, and the plurality of air outlets are evenly distributed with the motor body as the center, an air inlet is arranged at the other end of the outer cover, an oil pump box and a cooling plate are arranged in the outer cover, a rotating shaft is arranged on the motor body, a fan is detachably mounted on the rotating shaft, the fan is located in the outer cover and corresponds to the air inlet, the cooling plate is located between the fan and the air inlet and is connected to the outer cover, one end of the cooling channel is connected to the other end of the cooling channel through the oil pump box and the interior of the cooling plate in turn; the cooling plate is connected to the air inlet The cooling plate is connected, a plurality of air inlet channels are arranged on the cooling plate, and the plurality of air inlet channels are evenly distributed on the cooling plate in a rectangular array, the air inlet is connected to the air outlet through the air inlet channel and the inside of the outer cover in turn, a plurality of capillary tubes are arranged on the cooling plate, one side of the cooling plate is close to the fan, and the other side of the cooling plate corresponding to the fan is far away from the fan, and the plurality of capillary tubes are evenly distributed along the side of the cooling plate close to the fan to the other side corresponding to the fan, one end of the plurality of capillary tubes is connected to the oil pump box, and the other end of the plurality of capillary tubes is connected to the cooling channel, the capillary tube is an S-shaped structure formed by connecting a plurality of straight tubes end to end in turn, and the straight tube is connected to the cooling channel. The air inlet channels are perpendicular to each other, and several sections of straight pipes are evenly distributed along the height direction of the cooling plate and are staggered with each row of air inlet channels; an oil inlet box and an oil outlet box are arranged on the cooling plate, one side of the oil inlet box is detachably connected to the cooling plate and is communicated with one end of several capillary tubes, an oil inlet pipe 1 is arranged on the other side corresponding to the oil inlet box, the oil inlet box is detachably connected to the oil pump box through the oil inlet pipe 1, one side of the oil outlet box is detachably connected to the cooling plate and is communicated with the other end of several capillary tubes, an oil outlet pipe is arranged on the other side corresponding to the oil outlet box, the oil outlet box is detachably connected to the side wall of the motor body through the oil outlet pipe and is communicated with the cooling channel; The oil pump box includes a box body, a driving gear and a driven gear. The box body is detachably connected to the end of the motor body. The fan is located between the box body and the cooling plate. The rotating shaft penetrates the box body and is detachably connected to the fan. The driving gear and the driven gear are both located in the box body. The driving gear is detachably connected to the rotating shaft. The driven gear is meshed with the driving gear and is rotatably connected to the side wall of the box body. An oil inlet is provided on one side of the box body, and an oil outlet is provided on the other side of the box body. The oil inlet and the oil outlet both correspond to the meshing position of the driving gear and the driven gear. The oil inlet is communicated with one end of the cooling channel, and the oil outlet is communicated with the inside of the cooling plate.

2. The coreless motor with heat dissipation function according to claim 1, characterized in that: The part of the rotating shaft that passes through the box body is connected to the box body in a sealed and rotatable manner.

3. The coreless motor with heat dissipation function according to claim 1 is characterized in that: The motor body includes a casing, a stator and a rotor. The outside of the stator is sealed and connected to the casing and is provided with a cooling groove. The cooling channel is composed of the cooling groove and the side wall of the casing. The rotor is located in the stator. A power shaft is provided at one end of the rotor. The rotor is rotatably connected to one end of the casing through the power shaft. One end of the power shaft is connected to the rotor. The other end of the power shaft passes through the casing and is suspended outside the casing. The rotating shaft is connected to the other end of the rotor. The rotor is rotatably connected to the other end of the casing through the rotating shaft.

4. The coreless motor with heat dissipation function according to claim 3 is characterized in that: The cooling groove is distributed on the stator surface in a spiral shape. The casing is provided with an oil inlet pipe 2, one end of which is detachably connected to the casing and communicated with one end of the cooling groove. The other end of the oil inlet pipe 2 passes through the outer cover and is connected to the oil inlet box through the oil pump box and the oil inlet pipe 2 in sequence. One end of the oil outlet pipe is detachably connected to the casing and communicated with the other end of the cooling groove, and the other end of the oil outlet pipe passes through the outer cover and is connected to the oil outlet box.

5. The coreless motor with heat dissipation function according to claim 4 is characterized in that: The portion of the oil inlet pipe 2 that passes through the outer cover is sealed and connected to the outer cover, and the portion of the oil outlet pipe that passes through the outer cover is sealed and connected to the outer cover.

6. The coreless motor with heat dissipation function according to claim 3, characterized in that: A plurality of evenly distributed fins are arranged on the surface of the casing, the length directions of the fins and the casing are parallel to each other, and the fins are fixedly connected to the casing.

7. The coreless motor with heat dissipation function according to claim 6, characterized in that: A plurality of fins and a plurality of air outlets are arranged alternately and at intervals with the casing as the center to form a ring structure.

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