Integrated motor heat dissipation structure

Abstract

An integrated motor heat dissipation structure disclosed by the present invention comprises a motor shell structure and an air cooling heat dissipation structure, the motor shell structure comprises a connecting part and a shell body, the connecting part is provided with at least two connecting ends connected with a rotating shaft respectively, and a ventilation cavity is formed between the connecting ends. An air inlet and an air outlet which are communicated with the ventilation cavity are respectively formed in two ends of the connecting part; the outer side of the connecting part is sleeved with the shell body, and a spiral flow channel surrounding the ventilation cavity and arranged in the axial direction of the rotating shaft is arranged between the shell body and the connecting part; the air cooling heat dissipation structure comprises a fan, and the fan is arranged on one side of the motor shell structure; the spiral flow channel is adopted to guide a cooling medium to flow along a preset path, so that fluid distribution is more uniform, the situation that the cooling medium cannot completely circulate is avoided, efficient heat dissipation is achieved by combining air cooling and liquid cooling, meanwhile, the heat dissipation function is tightly combined with a main body structure of equipment, the heat dissipation structure is more compact, and the heat dissipation efficiency is improved. And the overall size of the equipment is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor heat dissipation, and in particular to an integrated motor heat dissipation structure. Background Art

[0002] A motor is an electromagnetic device that converts electrical energy into mechanical energy. Motors can be divided into electric motors and generators. Electric motors are devices that convert electrical energy into mechanical energy, while generators are devices that convert mechanical energy into electrical energy. The working principle of the motor is based on the law of electromagnetic induction. The electric motor uses an energized coil to generate a rotating magnetic field and act on the rotor to form a magneto-electrodynamic rotational torque, thereby converting electrical energy into mechanical energy. The generator uses the electromagnetic induction phenomenon to convert mechanical energy into electrical energy. The purpose of the motor heat dissipation structure is to effectively remove the excess heat generated by the motor during operation, thereby keeping the motor's operating temperature within a safe range, extending the motor's service life, and improving its efficiency.

[0003] Publication number CN103151879A provides a liquid-cooled motor, wherein each side of the stator core has a sealing cover, and the two sealing covers are annular structures, and together with the inner wall of the motor housing and the side of the stator core, form a closed space; the two closed sealing covers are connected through a plurality of grooves or infusion pipes on the outer ring wall of the stator core or the inner wall of the motor housing; the motor housing has a plurality of connecting holes, and the two sealing covers are connected to the infusion pipe and the liquid storage tank through the connecting holes; the two sealing covers, the motor housing, the infusion pipe, the radiator, the pump, and the liquid storage tank form a liquid circulation loop. The motor housing has a plurality of connecting holes, and the first sealing cover and the second sealing cover are connected to the infusion pipe and the liquid storage tank through the connecting holes, thereby connecting to the liquid circulation loop, so that the cooling medium can circulate in the liquid circulation loop to achieve cooling of the motor.

[0004] However, the cooling channel design of the motor in the prior art is unreasonable, resulting in a decrease in flow rate in local areas or the formation of dead corners, making it difficult for the cooling medium in the cooling channel to flow evenly in the entire cooling system. The problem of the cooling medium not being able to circulate completely may occur, affecting the heat dissipation effect and causing the heat dissipation efficiency of the motor to be low. Summary of the invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose an integrated motor heat dissipation structure to solve the technical problem in the prior art that the cooling medium in the cooling channel of the motor cannot flow completely, affecting the heat dissipation effect.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: The present invention provides an integrated motor heat dissipation structure, comprising: a motor housing structure and an air-cooled heat dissipation structure, the motor housing structure comprising a connecting part and a housing body, the connecting part having at least two connecting ends respectively connected to a rotating shaft, a ventilation cavity being formed between each of the connecting ends, a stator and a rotor of the motor being arranged in the ventilation cavity, an air inlet and an air outlet being respectively arranged at both ends of the connecting part, the housing body being sleeved on the outside of the connecting part, a spiral flow channel being arranged around the ventilation cavity and along the axial direction of the rotating shaft being arranged between the housing body and the connecting part, a cooling medium inlet and a cooling medium outlet being respectively arranged at both ends of the spiral flow channel, the air-cooled heat dissipation structure comprising a fan, the fan being arranged on one side of the motor housing structure, and being used to drive the airflow to flow from the air inlet to the air outlet.

[0007] In some embodiments, a threaded structure is provided between the connection portion and the shell body, the connection portion and the shell body are threadedly connected via the threaded structure, and a gap is provided on a connection surface of the threaded structure to form the spiral flow channel.

[0008] In some embodiments, the thread structure includes thread teeth and thread grooves, the thread teeth are spirally arranged on the outer side of the connecting portion, and the thread grooves matching with the thread teeth are provided on the inner side of the shell body.

[0009] In some embodiments, the groove edge corners of the thread groove match the tooth shape of the thread tooth, and the two side walls of the thread groove are recessed outward. When the thread tooth and the thread groove thread are matched, there is a gap between the two side walls of the thread groove and the two side walls of the thread tooth, so that two spiral flow channels are formed on both sides of the thread tooth.

[0010] In some embodiments, the connecting portion includes a connecting body and a cover body, the connecting body having a limiting section and a screw-in section, the limiting section is arranged on one side of the outer shell body, the screw-in section is arranged inside the outer shell body and is threadedly connected to the outer shell body, the shape of the cover body is the same as that of the limiting section, it is arranged on the other side of the outer shell body and is connected to the screw-in section of the connecting body.

[0011] In some embodiments, a liquid inlet cavity is formed inside the cover body, and a cooling medium liquid inlet pipe connected to the liquid inlet cavity is arranged on one side of the cover body; a liquid outlet cavity is formed inside the limiting section of the connector, and a cooling medium liquid outlet pipe connected to the liquid outlet cavity is arranged on one side of the connector; the liquid inlet cavity and the liquid outlet cavity are respectively connected to the two ends of the spiral flow channel.

[0012] In some embodiments, both ends of the connector are connected to the rotating shaft, and the ventilation cavity is formed inside the connector. A number of air inlet holes and a number of air outlet holes are respectively provided at both ends of the connector, and the number of air inlet holes and the number of air outlet holes are evenly arranged around the circumference of the rotating shaft.

[0013] In some embodiments, the fan is connected to the rotating shaft and can rotate when the rotating shaft rotates.

[0014] In some embodiments, the air-cooled heat dissipation structure further includes an air guide housing, which is disposed on one side of the motor housing structure and surrounds the outer side of the fan.

[0015] In some embodiments, the fan is located on one side of the air inlet of the motor housing structure, and a refrigeration structure is provided on the side of the air guide housing away from the motor housing structure, and the refrigeration structure is used to absorb heat to cool the intake air.

[0016] Compared with the prior art, the integrated motor heat dissipation structure provided by the present invention is provided with a motor housing structure and an air-cooled heat dissipation structure. The connecting part of the motor housing structure has at least two connecting ends, and a ventilation cavity is provided between each connecting end. The fan is used to transport gas to drive the airflow to flow from the air inlet to the air outlet. The air can pass through the ventilation cavity when flowing, so that the air can flow through the key heating parts such as the stator and rotor of the motor to take away the heat generated inside; at the same time, a spiral flow channel is provided between the shell body and the connecting part, and the spiral flow channel surrounds the ventilation cavity and is provided along the axial direction of the rotating shaft. The cooling medium enters the spiral flow channel from the cooling medium inlet, flows along the spiral flow channel and is discharged through the cooling medium outlet, and the cooling medium can be used to take away the heat on the motor housing structure; by using the spiral flow channel to guide the cooling medium to flow along a predetermined path, the fluid distribution is made more uniform, and the situation where the cooling medium cannot be fully circulated is avoided. At the same time, due to the existence of the spiral path, the flow path of the fluid becomes longer, which can increase the heat exchange area between the fluid and the wall surface, thereby improving the cooling efficiency. The present invention combines air cooling and liquid cooling to achieve efficient heat dissipation. At the same time, the heat dissipation function is closely integrated with the main structure of the device, the heat dissipation structure is more compact, and the overall volume of the device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall three-dimensional structure of an integrated motor heat dissipation structure provided by an embodiment of the present invention; Figure 2 is a schematic diagram of the overall front cross-sectional structure of the integrated motor heat dissipation structure provided by an embodiment of the present invention; Figure 3 is a schematic diagram of a front cross-sectional structure of a motor housing structure of an integrated motor heat dissipation structure provided by an embodiment of the present invention; Figure 4 is a schematic cross-sectional structure diagram of a threaded structure of an integrated motor heat dissipation structure provided by an embodiment of the present invention; Figure 5 2 is a schematic diagram of a front cross-sectional structure of an integrated motor heat dissipation structure provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the air-cooling heat dissipation structure of the integrated motor heat dissipation structure provided by an embodiment of the present invention.

[0018] Description of reference numerals: 1. Motor housing structure; 101. Ventilation cavity; 102. Spiral flow channel; 11. Connecting part; 111. Connecting body; 112. Cover body; 113. Cooling medium inlet pipe; 114. Cooling medium outlet pipe; 115. Inlet cavity; 116. Outlet cavity; 117. Air outlet hole; 118. Air inlet hole; 12. Housing body; 13. Thread structure; 131. Thread teeth; 132. Thread groove; 2. Air-cooled heat dissipation structure; 21. Fan; 22. Air guide housing; 23. Refrigeration structure; 3. Rotating shaft. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] In order to solve the technical problem that the cooling medium in the cooling channel of the motor cannot be fully circulated, affecting the heat dissipation effect, the present invention provides an integrated motor heat dissipation structure, which uses a spiral flow channel to guide the cooling medium to flow along a predetermined path, so that the fluid distribution is more uniform, avoiding the situation where the cooling medium cannot be fully circulated. At the same time, due to the existence of the spiral path, the flow path of the fluid becomes longer, which can increase the heat exchange area between the fluid and the wall surface, thereby improving the cooling efficiency. The present invention combines air cooling and liquid cooling to achieve efficient heat dissipation. At the same time, the heat dissipation function is closely integrated with the main structure of the equipment, and the heat dissipation structure is more compact, reducing the overall volume of the equipment.

[0021] See also Figures 1 to 6The integrated motor heat dissipation structure includes: a motor housing structure 1 and an air-cooled heat dissipation structure 2, wherein the motor housing structure 1 includes a connecting portion 11 and a housing body 12, wherein the connecting portion 11 has at least two connecting ends respectively connected to the rotating shaft 3, and a ventilation cavity 101 is formed between each of the connecting ends, in which the stator and rotor of the motor are arranged, and an air inlet and an air outlet connected to the ventilation cavity 101 are respectively arranged at both ends of the connecting portion 11; the housing body 12 is sleeved on the outer side of the connecting portion 11, and a spiral flow channel 102 is arranged between the housing body 12 and the connecting portion 11, which is arranged around the ventilation cavity 101 and along the axial direction of the rotating shaft 3, and a cooling medium inlet and a cooling medium outlet are respectively arranged at both ends of the spiral flow channel 102; the air-cooled heat dissipation structure 2 includes a fan 21, which is arranged on one side of the motor housing structure 1, and is used to drive the airflow to flow from the air inlet to the air outlet.

[0022] In the present device, the connecting portion 11 of the motor housing structure 1 has at least two connecting ends for stably connecting the rotating shaft 3, and a ventilation cavity 101 is arranged between the connecting ends, and an air inlet and an air outlet are respectively arranged at both ends of the connecting portion 11, and the fan 21 can be used to transport gas to drive the airflow to flow from the air inlet to the air outlet, and the air inlet and the air outlet are connected to the ventilation cavity 101, so that the airflow can pass through the ventilation cavity 101 when flowing, so that the air can flow through the key heating parts such as the stator and rotor of the motor to take away the heat generated inside; at the same time, a spiral flow channel 102 is arranged between the shell body 12 and the connecting portion 11, and the spiral flow channel 102 surrounds the ventilation cavity 101 and is arranged along the axial direction of the rotating shaft 3, and a cooling medium inlet and a cooling medium outlet connected to the spiral flow channel 102 are arranged, so that the cooling medium will enter the spiral flow channel 102 from the cooling medium inlet, flow along the spiral flow channel 102 and then be discharged through the cooling medium outlet, and the cooling medium can be used to take away the heat on the motor housing structure 1. This solution combines air cooling and liquid cooling to achieve efficient heat dissipation. At the same time, it closely integrates the heat dissipation function with the main structure of the equipment, making the heat dissipation structure more compact and reducing the overall volume of the equipment.

[0023] It should be noted that the cooling medium is a substance used to remove heat during the heat exchange process. The cooling medium includes but is not limited to water and oil. Water, due to its high specific heat capacity and good thermal conductivity, can also play a lubricating role when mineral oil or synthetic oil is used as the cooling medium.

[0024] In order to form the spiral flow channel 102 between the connection portion 11 and the housing body 12 and to stably connect the two, in this embodiment, refer to Figures 2 to 4A threaded structure 13 is provided between the connection part 11 and the shell body 12, and the connection part 11 and the shell body 12 are threadedly connected through the threaded structure 13. A gap is provided on the connection surface of the threaded structure 13, and the gap is arranged along the threaded structure 13. The cooling medium can flow in the gap arranged in spiral, forming the spiral flow channel 102, which has a simple and compact structure. In addition, the connection part 11 and the shell body 12 are threadedly connected through the threaded structure 13, so that the connection part 11 and the shell body 12 are easy to disassemble, and the spiral channel for liquid cooling can be opened for easy cleaning, which can meet the needs of daily maintenance.

[0025] Preferably, in this embodiment, please refer to Figure 4 , the thread structure 13 includes a thread 131 and a thread groove 132, the thread 131 is spirally arranged on the outer side of the connection part 11, and the inner side of the shell body 12 is provided with the thread groove 132 matched with the thread 131, so that the connection part 11 can be threadedly connected to the shell body 12 through the thread 131 on the outer side. Of course, in other embodiments, the thread 131 and the thread groove 132 can also be provided on the shell body 12 and the connection part 11 respectively, the thread 131 is spirally arranged on the inner side of the shell body 12, and the thread groove 132 matched with the thread 131 is provided on the outer side of the connection part 11, so that the connection part 11 can be threadedly connected with the thread 131 on the inner side of the shell body 12 through the thread groove 132 on the outer side.

[0026] In order to improve the heat dissipation effect of the motor, in some embodiments, the groove corners of the thread groove 132 are matched with the tooth shape of the thread teeth 131, so that the connection part 11 and the shell body 12 can be normally and tightly threadedly connected. The two side walls of the thread groove 132 are both recessed outward to form two spiral grooves. When the thread teeth 131 and the thread groove 132 are threadedly matched, the groove corners of the thread groove 132 are thread-sealed with the thread teeth 131, and the groove walls on both sides of the thread groove 132 are not fitted with the thread teeth 131. There is a gap between the two side walls of the thread groove 132 and the two side walls of the thread teeth 131, so that two independent spiral flow channels 102 are formed on both sides of the thread teeth 131. After the connection part 11 is connected to the shell, the spiral flow channel 102 is naturally formed, and the cooling medium can be transported into and discharged from the spiral flow channel 102 through the cooling medium inlet and the cooling medium outlet to achieve heat dissipation of the motor housing structure. After the connecting portion 11 is disassembled from the housing, the two spiral flow channels 102 can be opened to facilitate daily cleaning and maintenance.

[0027] It can be understood that in order to be able to continuously provide low-temperature coolant to the spiral flow channel 102, in some embodiments, a cooling box circulation system is provided, and the liquid outlet and liquid inlet of the cooling box circulation system are respectively connected to the cooling medium inlet and the cooling medium outlet, and a refrigeration heat exchanger is provided in the cooling box to achieve heat exchange cooling of the internal coolant, so that low-temperature coolant can be continuously provided to the spiral flow channel 102 through the cooling medium inlet and the cooling medium outlet to achieve circulating cooling.

[0028] In some embodiments, see Figures 2 to 4 The connecting portion 11 comprises a connecting body 111 and a cover body 112, wherein the connecting body 111 has a limiting section and a screw-in section, wherein the limiting section is disc-shaped and is arranged on the left side of the shell body 12, and the screw-in section is hollow cylindrical and is arranged inside the shell body 12, and the screw-in section is arranged on the outer side of the screw-in section, and the threaded teeth 131 are arranged on the outer side of the screw-in section, and are threadedly connected with the shell body 12, and the shape of the cover body 112 is the same as that of the limiting section, and it is arranged on the right side of the shell body 12, and the screw-in section of the connecting body 111 can be connected through the cover body 112 to achieve the fixation of the connecting body 111 and the shell body 12, and in order to facilitate the disassembly and assembly of the connecting body 111 and the cover body 112, the connecting body 111 and the cover body 112 can be connected by threaded connection or snap-fitting; and waterproof sealing gaskets are arranged on the outer side of the limiting section of the connecting body 111 and the outer side of the cover body 112, and after the connecting portion 11 is installed on the shell body 12, the sealing of the spiral flow channel 102 is ensured.

[0029] Specifically, a liquid inlet cavity 115 is formed inside the cover body 112, and a cooling medium liquid inlet pipe 113 connected to the liquid inlet cavity 115 is arranged on one side of the cover body 112; a liquid outlet cavity 116 is formed inside the limiting section of the connector 111, and a cooling medium liquid outlet pipe 114 connected to the liquid outlet cavity 116 is arranged on one side of the connector 111; the liquid inlet cavity 115 and the liquid outlet cavity 116 are respectively connected to the two ends of the two spiral flow channels 102.

[0030] During implementation, the coolant flows to the liquid inlet chamber 115 through the cooling medium liquid inlet pipe 113, flows to the two spiral flow channels 102 through the liquid inlet chamber 115, flows along a specific spiral path in the two spiral flow channels 102, and is finally discharged through the liquid outlet chamber 116 and the cooling medium liquid outlet pipe 114.

[0031] It should be noted that the cooling medium and the cooling airflow have the same flow direction, both flowing from the right side to the left side of the motor housing structure 1, to ensure that the air and coolant can flow smoothly and take away the internal heat.

[0032] Preferably, in this embodiment, two connecting ends are respectively formed on the inner sides of the two ends of the connecting body 111, both of which are connected to the rotating shaft 3, a gap is reserved between the interior thereof and the rotating shaft 3 and the ventilation cavity 101 is formed, and a plurality of air inlet holes 118 and a plurality of air outlet holes 117 are respectively provided at both ends of the connecting body 111. After the connecting body 111 is connected to the rotating shaft 3, the plurality of air inlet holes 118 and the plurality of air outlet holes 117 can be connected to the ventilation cavity 101, so that air can flow through the air inlet holes 118, the ventilation cavity 101 and the air outlet holes 117. Specifically, the ventilation cavity 101 is an annular cavity, and the plurality of air inlet holes 118 and the plurality of air outlet holes 117 are evenly arranged around the circumference of the rotating shaft 3, which can increase the air intake and ensure that the air can flow smoothly and fully take away the internal heat.

[0033] During implementation, the fan 21 rotates to transport the gas, so that the gas evenly enters the ventilation cavity 101 through the plurality of air inlet holes 118, flows through the key heating parts of the motor, and then is discharged through the plurality of air outlet holes 117 to take away the heat generated inside.

[0034] It should be noted that the present solution does not limit the specific external structure of the shell body 12 . To facilitate heat dissipation, the exterior of the shell body 12 may be hollow or have a plurality of openings to facilitate heat dissipation on the shell body 12 .

[0035] In order to save costs, preferably, in this embodiment, refer to Figure 2 , Figure 5 and Figure 6 The fan 21 is connected to the rotating shaft 3, and the fan 21 is driven to move by the rotation of the rotating shaft 3, so that the fan 21 can rotate when the rotating shaft 3 rotates, without the need to set up additional driving components for the fan 21.

[0036] Furthermore, in some embodiments, the air-cooled heat dissipation structure 2 also includes an air guide shell 22 and a refrigeration structure 23, the fan 21 is located on the side of the air inlet hole 118 of the motor housing structure 1, the air guide shell 22 surrounds the outside of the fan 21, one side of the air guide shell 22 is detachably fixedly connected to one side of the motor housing structure 1, and the other side of the air guide shell 22 is provided with a refrigeration structure 23, and the refrigeration structure 23 is used to absorb heat and cool the intake air.

[0037] The air guide housing 22 is usually designed as a housing or a cover with a certain shape, which can effectively guide the airflow to flow in a predetermined direction, so as to ensure that the airflow can smoothly reach the surface of the component to be cooled and take away the heat.

[0038] The cooling structure 23 can directly contact with the heat source and absorb heat, such as a heat sink, a heat pipe, etc. It can absorb heat at the air inlet of the air guide housing 22 and transfer it to the surrounding cooling medium (usually air).

[0039] The present invention provides a motor housing structure 1 and an air-cooling heat dissipation structure 2. The connecting portion 11 of the motor housing structure 1 has at least two connecting ends. A ventilation cavity 101 is provided between the connecting ends. The fan 21 is used to transport gas to drive the airflow to flow from the air inlet to the air outlet. The airflow can pass through the ventilation cavity 101 when flowing, so that the air can flow through the key heating parts such as the stator and the rotor of the motor to take away the heat generated inside. At the same time, a spiral flow channel 102 is provided between the housing body 12 and the connecting portion 11. The spiral flow channel 102 surrounds the ventilation cavity 101 and is provided along the axial direction of the rotating shaft 3. The cooling medium enters the spiral flow channel 102 from the cooling medium inlet, flows along the spiral flow channel 102, and is discharged through the cooling medium outlet. The cooling medium can be used to take away the heat on the motor housing structure 1. The spiral flow channel 102 is used to guide the cooling medium to flow along a predetermined path, so that the fluid distribution is more uniform, and the situation that the cooling medium cannot be fully circulated is avoided. At the same time, due to the existence of the spiral path, the flow path of the fluid becomes longer, which can increase the heat exchange area between the fluid and the wall surface, thereby improving the cooling efficiency. The present invention combines air cooling and liquid cooling to achieve efficient heat dissipation. At the same time, the heat dissipation function is closely integrated with the main structure of the device, the heat dissipation structure is more compact, and the overall volume of the device is reduced.

[0040] In the description of the present application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0041] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0042] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An integrated motor heat dissipation structure, characterized in that: include: A motor housing structure, the motor housing structure comprises a connecting portion and a housing body, the connecting portion having at least two connecting ends respectively connected to a rotating shaft, a ventilation cavity being formed between the connecting ends, a stator and a rotor of the motor being arranged in the ventilation cavity, an air inlet and an air outlet communicating with the ventilation cavity being arranged at two ends of the connecting portion; the housing body is sleeved on the outside of the connecting portion, a spiral flow channel surrounding the ventilation cavity and arranged along the axial direction of the rotating shaft is arranged between the housing body and the connecting portion, a cooling medium inlet and a cooling medium outlet are arranged at two ends of the spiral flow channel; and, The air-cooled heat dissipation structure includes a fan, which is arranged on one side of the motor housing structure and is used to drive the air flow from the air inlet to the air outlet.

2. The integrated motor heat dissipation structure according to claim 1, characterized in that: A threaded structure is provided between the connection part and the shell body, the connection part and the shell body are threadedly connected through the threaded structure, and a gap is provided on the connection surface of the threaded structure to form the spiral flow channel.

3. The integrated motor heat dissipation structure according to claim 2, characterized in that: The thread structure includes a thread tooth and a thread groove. The thread tooth is spirally arranged on the outer side of the connecting portion, and the thread groove matched with the thread tooth is arranged on the inner side of the shell body.

4. The integrated motor heat dissipation structure according to claim 3, characterized in that: The groove edge corners of the thread groove match the tooth shape of the thread tooth, and the two side walls of the thread groove are recessed outward. When the thread tooth and the thread groove thread are matched, there is a gap between the two side walls of the thread groove and the two side walls of the thread tooth, so that two spiral flow channels are formed on both sides of the thread tooth.

5. The integrated motor heat dissipation structure according to claim 4, characterized in that: The connecting part includes a connecting body and a cover body, the connecting body has a limiting section and a screw-in section, the limiting section is arranged on one side of the shell body, the screw-in section is arranged inside the shell body and is threadedly connected to the shell body, the shape of the cover body is the same as that of the limiting section, it is arranged on the other side of the shell body and is connected to the screw-in section of the connecting body.

6. The integrated motor heat dissipation structure according to claim 5, characterized in that: A liquid inlet cavity is formed inside the cover body, and a cooling medium liquid inlet pipe connected to the liquid inlet cavity is arranged on one side of the cover body; a liquid outlet cavity is formed inside the limiting section of the connector, and a cooling medium liquid outlet pipe connected to the liquid outlet cavity is arranged on one side of the connector; the liquid inlet cavity and the liquid outlet cavity are respectively connected to the two ends of the spiral flow channel.

7. The integrated motor heat dissipation structure according to claim 6, characterized in that: Both ends of the connector are connected to the rotating shaft, and the ventilation cavity is formed inside the connector. A plurality of air inlet holes and a plurality of air outlet holes are respectively provided at both ends of the connector, and the plurality of air inlet holes and the plurality of air outlet holes are evenly arranged around the circumference of the rotating shaft.

8. The integrated motor heat dissipation structure according to claim 1, characterized in that: The fan is connected to the rotating shaft and can rotate when the rotating shaft rotates.

9. The integrated motor heat dissipation structure according to claim 1, characterized in that: The air-cooling heat dissipation structure also includes an air guide housing, which is arranged on one side of the motor housing structure and surrounds the outer side of the fan.

10. The integrated motor heat dissipation structure according to claim 9, characterized in that: The fan is located at one side of the air inlet of the motor housing structure, and a refrigeration structure is provided on the side of the air guide housing away from the motor housing structure. The refrigeration structure is used to absorb heat and cool the intake air.

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