Lightweight motor heat dissipation structure

Abstract

The present application relates to motor heat dissipation technical field, disclose a kind of light weight motor heat dissipation structure, including machine shell, stator structure, rotor structure, heat dissipation fan;Cooling oil liquid in the present application is introduced into annular guide groove in liquid storage tank, and multiple vortex grooves are diffused to outside, and cooling oil liquid can also be accelerated to spray out by the conical liquid outlet hole on the inner wall of annular guide groove to the vortex fan blade at inner diameter, so that the lower vortex fan blade can be vortexed to rotate, and the cooling oil liquid imported can be quickly circulated from the side of stator structure to the other side along the coil gap, the cooling oil liquid in the cavity of machine shell from the side of stator structure can be accelerated to flow, the cooling and heat exchange efficiency of the close coil in stator structure is improved, meanwhile, vortex fan blade and vortex groove can swirl and diffuse cooling oil liquid and the rotating shaft in rotor structure is circulated in the same direction, so that the influence of cooling oil liquid introduction into the cavity of machine shell on the rotating speed of rotor structure is avoided.

Description

Technical Field

[0001] This invention relates to the field of motor heat dissipation technology, specifically a lightweight motor heat dissipation structure. Background Technology

[0002] Existing motor rotor cooling devices use blades fixed on the motor rotor end plate. When the motor rotates, the blades rotate to generate cooling air. However, due to the dense internal components and small gaps of the motor, the internal airflow is poor. Therefore, it is necessary to set up an additional cooling mechanism to further cool and dissipate heat.

[0003] For example, Chinese Patent Publication No. CN119813606A discloses a heat dissipation base for a generator rotor, including a base base plate, a base ring cover provided on the base base plate, a stator structure fixedly arranged inside the base ring cover by an internal heat-conducting component, a rotor structure arranged inside the stator structure, a rotor heat-conducting component fixedly arranged in the middle of the rotor structure, the rotor heat-conducting component including an installation rod fixedly installed inside the rotor structure, a connecting strip plate fixedly installed at one end of the installation rod, and a rotating shaft fixedly installed on the connecting strip plate.

[0004] The aforementioned cited document describes how the air guide component allows air from one side of the filter baffle to be transported into the cylindrical tube through the internal air slot. The rotor structure can transfer heat to the protruding long block, and the air flowing in the internal air slot can carry away the heat from the protruding long block, thus achieving heat dissipation of the rotor structure and increasing the air flow speed in dense environments, thereby improving the heat dissipation speed of the generator rotor.

[0005] However, the existing motors have a relatively compact structure between multiple sets of stator coils, which slows down the flow rate of cooling oil through the gaps between the stator coils, resulting in poor heat exchange efficiency between the coils. Furthermore, under the limitations of the current lightweight motor usage scenarios and ambient temperatures, the motor heat exchange can only be carried out through the circulation of oil pumps. The heat exchange method is relatively simple and cannot be matched with a suitable heat exchange method to dissipate heat according to the requirements. Summary of the Invention

[0006] The purpose of this invention is to provide a lightweight motor heat dissipation structure. This lightweight motor heat dissipation structure can accelerate the flow rate of heat exchange oil at the tightly packed coils in the stator structure, improve heat exchange efficiency, and automatically match and switch energy-saving heat exchange methods for heat dissipation according to the motor usage scenario.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a lightweight motor heat dissipation structure, comprising a housing, a stator structure, a rotor structure, and a cooling fan. The stator structure is fixedly installed in the middle of the inner cavity of the housing, the rotor structure is installed in the inner cavity of the housing, and the cooling fan is coaxially fixedly installed with the rotor structure. A liquid storage mechanism is provided on the back of the housing, a connecting component is provided on the top of the housing near the cooling fan, and a liquid guiding mechanism is provided on one side of the inner cavity of the housing. The liquid guiding mechanism includes a mounting base, and a turbofan blade is rotatably mounted on the inner diameter of the mounting base. A temperature control component is provided inside the connecting component, and the temperature control component includes a paraffin tube. Multiple sets of heat dissipation components are provided on the outside of the cooling fan, and each heat dissipation component includes multiple sets of radiators arranged at equal intervals around the circumference.

[0008] Preferably, a base is fixedly installed at the bottom of the housing, a sealing end plate is fixedly installed in the inner cavity of the housing near the cooling fan, the rotor structure and the central shaft of the cooling fan are rotatably connected to the sealing end plate, and a fan cover is fixedly installed on the outside of the housing near the end opening of the cooling fan.

[0009] Preferably, a junction box is fixedly installed on the top of the housing on the side away from the connecting assembly, and the liquid storage mechanism includes a liquid storage tank fixedly installed on the back of the housing.

[0010] Preferably, a circulation pump is fixedly installed at the bottom of the liquid storage tank, and the circulation pump is electrically connected to the junction box. The circulation pump at the bottom of the liquid storage tank is connected to the side of the inner cavity of the machine housing away from the mounting base through a liquid guide pipe.

[0011] Preferably, the connecting assembly includes a connecting pipe fixedly installed on the top of the housing near the cooling fan. A first liquid outlet pipe and a second liquid outlet pipe are respectively connected through the bottom and top sides of the connecting assembly. The end of the first liquid outlet pipe away from the connecting pipe is connected to the liquid storage tank.

[0012] Preferably, the mounting base is an annular structure with an opening on one side. The mounting base is fixedly installed on the side of the sealing end plate away from the cooling fan. An annular guide groove is provided inside the mounting base. A vortex groove is provided on the circumference of the mounting base near the turbine blades. The vortex groove is connected to the annular guide groove.

[0013] Preferably, a first liquid inlet pipe is connected through the top of the mounting base, and the connecting pipe is connected to the annular guide groove through the first liquid inlet pipe. Liquid outlet holes are evenly spaced through the inner circumference of the mounting base, and the side cross-section of the liquid outlet hole is conical. The liquid outlet hole is connected to the vortex groove.

[0014] Preferably, the temperature control component includes a mounting bracket fixedly installed on the inner wall of the connecting pipe, the paraffin tube fixedly installed in the middle of the mounting bracket, a top rod movably passing through the inside of the paraffin tube, a plug fixedly installed at the top of the top rod, a tension spring fixedly installed between the plug and the mounting bracket, and the plug connecting to the end of the second liquid outlet pipe on the inner wall of the connecting pipe.

[0015] Preferably, multiple sets of the radiators are fixedly installed at equal intervals on the outer circumferential edge of the fan cover.

[0016] Preferably, an annular conduit is fixedly installed between the multiple sets of serpentine tubes inside the radiator, and a second liquid inlet pipe is connected through the bottom of the annular conduit to the bottom of the inner wall of the annular guide groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In this invention, the cooling oil inside the storage tank is introduced into an annular guide groove, and multiple sets of vortex grooves diffuse outward in a vortex pattern. At the same time, the cooling oil can also be sprayed out through the outlet holes on the inner wall of the annular guide groove to the turbine blades at the inner diameter. The cooling oil is accelerated out of the conical outlet holes, which enables the lower turbine blades to rotate in a vortex pattern. This allows the introduced cooling oil to flow quickly from one side of the stator structure along the coil gap to the other side. This achieves accelerated flow of cooling oil from the stator structure side in the inner cavity of the housing, improving the cooling and heat exchange efficiency of the tightly packed coils in the stator structure. In addition, the turbine blades and vortex grooves can make the vortex diffusion of the cooling oil flow in the same direction as the shaft in the rotor structure, thereby avoiding the influence of the cooling oil introduced into the inner cavity of the housing on the rotor speed.

[0019] This invention utilizes a paraffin tube located in the middle of the connecting pipe. As the temperature of the cooling oil gradually increases, the paraffin in the tube melts and expands, pushing the push rod upwards. This stretches the spring, allowing the block at the top of the push rod to move upwards from the second outlet pipe, thus removing the obstruction at the end of the second outlet pipe. This allows a portion of the cooling oil in the connecting pipe to flow from the second outlet pipe to multiple radiators. The serpentine tubes in these radiators are further cooled by the cooling fan, further cooling the cooling oil flowing into the inner cavity of the machine housing. With the cooperation of the first and second inlet pipes, the oil is guided from both sides of the annular guide groove to the stator structure, improving the heat exchange efficiency of the stator structure. This allows the motor stator structure to adapt to different ambient temperatures and operating conditions, selecting the appropriate heat exchange method based on its own temperature. This avoids the continuous high-intensity operation of the circulating pump in the heat exchange structure, which results in high energy consumption and costs. It also avoids the problem of insufficient heat exchange due to limitations in the motor's usage scenarios and operating conditions, leading to increased damage rates. Attached Figure Description

[0020] Figure 1This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the side cross-sectional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the stator assembly and rotor assembly structure in this invention;

[0023] Figure 4 This is a schematic diagram of the stator assembly and liquid storage tank structure in this invention;

[0024] Figure 5 This is a schematic diagram of the turbofan blade structure in this invention;

[0025] Figure 6 for Figure 2 A magnified view of the structure at point A in the middle;

[0026] Figure 7 for Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0027] In the diagram: 1. Housing; 2. Junction box; 3. Liquid storage mechanism; 4. Connecting assembly; 5. Liquid guiding mechanism; 6. Temperature control assembly; 7. Heat dissipation assembly; 11. Base; 12. Stator structure; 13. Rotor structure; 14. Cooling fan; 131. Sealing end plate; 141. Fan cover; 31. Liquid storage tank; 41. Connecting pipe; 42. First liquid outlet pipe; 43. Second liquid outlet pipe; 51. Mounting base; 52. Vortex groove; 53. First liquid inlet pipe; 54. Liquid outlet hole; 55. Turbine fan blade; 510. Annular guide groove; 61. Mounting bracket; 62. Paraffin tube; 63. Top rod; 64. Block; 65. Tension spring; 71. Radiator; 72. Annular guide tube; 73. Second liquid inlet pipe. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1:

[0030] This embodiment introduces a lightweight motor heat dissipation structure, such as Figures 1-7 As shown, a lightweight motor heat dissipation structure includes a housing 1, a stator structure 12, a rotor structure 13, and a cooling fan 14. The stator structure 12 is fixedly installed in the middle of the inner cavity of the housing 1, the rotor structure 13 is installed in the inner cavity of the housing 1, and the cooling fan 14 is fixedly installed with the rotor structure 13 via coaxial connection.

[0031] A liquid storage mechanism 3 is provided on the back of the housing 1, a connecting component 4 is provided on the top of the housing 1 near the cooling fan 14, and a liquid guiding mechanism 5 is provided on one side of the inner cavity of the housing 1. The liquid guiding mechanism 5 includes a mounting base 51, and a turbine blade 55 is rotatably mounted on the inner diameter of the mounting base 51.

[0032] The casing 1 has a base 11 fixedly installed at the bottom. A sealing end plate 131 is fixedly installed on the inner cavity of the casing 1 near the cooling fan 14. The rotor structure 13 and the middle shaft of the cooling fan 14 are rotatably mounted to the sealing end plate 131. A fan cover 141 is fixedly installed on the outer side of the casing 1 near the end opening of the cooling fan 14. A junction box 2 is fixedly installed on the top of the casing 1 away from the connecting component 4. The liquid storage mechanism 3 includes a liquid storage tank 31 fixedly installed on the back of the casing 1. A circulation pump is fixedly installed at the bottom of the liquid storage tank 31 and is electrically connected to the junction box 2. The circulation pump at the bottom of the liquid storage tank 31 is connected to the inner cavity of the casing 1 away from the mounting base 51 through a liquid guide pipe. The liquid storage tank 31 pumps the internal cooling oil into the annular guide groove 510 in the inner cavity of the mounting base 51 through the circulation pump. Multiple sets of vortex grooves 52 diffuse outward in a vortex.

[0033] The connecting component 4 includes a connecting pipe 41 fixedly installed on the top of the housing 1 near the cooling fan 14. A first liquid outlet pipe 42 and a second liquid outlet pipe 43 are respectively connected through the bottom and top sides of the connecting component 4. The end of the first liquid outlet pipe 42 away from the connecting pipe 41 is connected to the liquid storage tank 31. The mounting base 51 is an annular structure with one side open. The mounting base 51 is fixedly installed on the sealing end plate 131 away from the cooling fan 14. An annular guide groove 510 is opened inside the mounting base 51. A vortex groove 52 is opened on the circumference of the mounting base 51 near the turbine blade 55. The vortex groove 52 is connected to the annular guide groove 510. When the cooling oil in the liquid storage tank 31 is pumped into the annular guide groove 510, the cooling oil can also be sprayed out to the turbine blade 55 at the inner diameter through the liquid outlet hole 54 on the inner wall of the annular guide groove 510.

[0034] The mounting base 51 is connected to the top of the first liquid inlet pipe 53. The connecting pipe 41 and the annular guide groove 510 are connected through the first liquid inlet pipe 53. The mounting base 51 has liquid outlet holes 54 that are evenly spaced on the inner circumference. The side cross-section of the liquid outlet hole 54 is a conical structure. The liquid outlet hole 54 is connected to the vortex groove 52. When the cooling oil is sprayed out from the liquid outlet hole 54, the internal conical structure can increase the flow rate of the cooling oil, so that the lower turbofan blades 55 can rotate in a vortex. The introduced cooling oil can flow quickly from one side of the stator structure 12 along the coil gap to the other side. This allows the cooling oil in the inner cavity of the housing 1 to accelerate the flow rate from the stator structure 12 side, thereby improving the cooling heat exchange efficiency of the tightly coiled coil in the stator structure 12.

[0035] like Figures 1-4 As shown, in this embodiment, the lightweight motor heat dissipation structure can supply power to the stator structure 12 of the motor through the junction box 2, and the rotor structure 13 can drive the cooling fan 14 to rotate coaxially in the middle of the stator structure 12.

[0036] like Figure 5 , Figure 7 As shown, in this embodiment, the liquid storage tank 31 pumps the internal cooling oil into the annular guide groove 510 in the inner cavity of the mounting base 51 through a circulation pump. Multiple sets of vortex grooves 52 diffuse outward in a vortex. At the same time, the cooling oil can also be sprayed out through the outlet hole 54 on the inner wall of the annular guide groove 510 to the turbine blade 55 at the inner diameter. When the cooling oil is sprayed out from the outlet hole 54, the internal conical structure can increase the flow rate of the cooling oil, thereby enabling the lower turbine blade 55 to vortex and allowing the introduced cooling oil to flow quickly from one side of the stator structure 12 along the coil gap to the other side. This allows the cooling oil in the inner cavity of the housing 1 to accelerate the flow rate from the stator structure 12 side, thereby improving the cooling and heat exchange efficiency of the tightly coiled coil in the stator structure 12. At the same time, the turbine blade 55 and the vortex groove 52 can make the vortex diffusion of the cooling oil flow in the same direction as the rotating shaft in the rotor structure 13, thereby avoiding the influence of the cooling oil introduced into the inner cavity of the housing 1 on the rotation speed of the rotor structure 13.

[0037] Example 2:

[0038] Based on Example 1, this example introduces a lightweight motor heat dissipation structure, such as... Figure 3 , Figure 5 , Figure 6 As shown, a temperature control component 6 is provided inside the connecting component 4. The temperature control component 6 includes a paraffin tube 62. Multiple heat dissipation components 7 are provided on the outside of the cooling fan 14. The heat dissipation components 7 include multiple radiators 71 arranged at equal intervals around the circumference.

[0039] The temperature control component 6 includes a mounting bracket 61 fixedly installed on the inner wall of the connecting pipe 41, a paraffin tube 62 fixedly installed in the middle of the mounting bracket 61, a push rod 63 movably passing through the inside of the paraffin tube 62, a plug 64 fixedly installed at the top of the push rod 63, a tension spring 65 fixedly installed between the plug 64 and the mounting bracket 61, and the plug 64 connected to the end of the second liquid outlet pipe 43 on the inner wall of the connecting pipe 41. Multiple sets of radiators 71 are fixedly installed at equal intervals on the outer circumferential edge of the fan cover 141. An annular guide tube 72 is fixedly installed between the serpentine tubes inside the multiple sets of radiators 71. A second liquid inlet pipe 73 is connected through the bottom of the annular guide tube 72 and the bottom of the inner wall of the annular guide groove 510, and the liquid inlet pipe passes through the paraffin tube 62 located in the middle of the connecting pipe 41. As the temperature of the cooling oil gradually increases, the paraffin in the paraffin tube 62 begins to melt and expand, thus pushing the push rod 63 upward. This stretches the spring, allowing the block 64 at the top of the push rod 63 to move upward from the second outlet pipe 43, thereby removing the obstruction to the end of the second outlet pipe 43. This allows a portion of the cooling oil in the connecting pipe 41 to flow from the second outlet pipe 43 to the multiple radiators 71, enabling the serpentine tubes in the multiple radiators 71 to be further circulated by the cooling fan 14. This further cools the cooling oil flowing into the inner cavity of the casing 1. Thus, with the cooperation of the first inlet pipe 53 and the second inlet pipe 73, the oil is guided from both sides of the annular guide groove 510 to the stator structure 12, improving the heat exchange efficiency of the stator structure 12.

[0040] like Figures 4-6 As shown in this embodiment, when the temperature of the cooling oil passing through the paraffin tube 62 located in the middle of the connecting pipe 41 gradually increases, the paraffin in the paraffin tube 62 begins to melt and expand, thereby pushing the push rod 63 upward, stretching the spring, and allowing the block 64 at the top of the push rod 63 to move upward from the second outlet pipe 43, thus removing the obstruction to the end of the second outlet pipe 43. This allows a portion of the cooling oil in the connecting pipe 41 to flow from the second outlet pipe 43 to the multiple radiators 71, enabling the serpentine tubes in the multiple radiators 71 to be further circulated by the cooling fan 14. This further cools the cooling oil flowing into the inner cavity of the motor housing 1. With the cooperation of the first inlet pipe 53 and the second inlet pipe 73, the oil is guided from both sides of the annular guide groove 510 to the stator structure 12, which improves the heat exchange efficiency of the stator structure 12. This allows the motor stator structure 12 to adapt to different ambient temperatures and operating conditions by selecting the appropriate heat exchange method according to its own temperature. This avoids the continuous high-intensity operation of the circulating pump in the heat exchange structure, which results in high energy consumption and costs. At the same time, it avoids the problem of untimely heat exchange due to limitations in the motor's usage scenarios and operating conditions, which could lead to an increased damage rate.

[0041] Working principle: When the lightweight motor is in use, the liquid storage tank 31 pumps the internal cooling oil into the annular guide groove 510 in the inner cavity of the mounting base 51 through the circulation pump. Multiple sets of vortex grooves 52 diffuse outward in a vortex. At the same time, the cooling oil can also be sprayed out to the turbofan blades 55 at the inner diameter through the liquid outlet hole 54 on the inner wall of the annular guide groove 510. When the cooling oil is sprayed out from the liquid outlet hole 54, the internal conical structure can increase the flow rate of the cooling oil, thereby enabling the lower turbofan blades 55 to rotate in a vortex. This allows the introduced cooling oil to flow quickly from one side of the stator structure 12 along the coil gap to the other side. This increases the flow rate of the cooling oil in the inner cavity of the housing 1 from the stator structure 12 side, thereby improving the cooling and heat exchange efficiency of the tightly coiled coils in the stator structure 12.

[0042] Meanwhile, the turbine blades 55 and the vortex grooves 52 can vortex diffuse the cooling oil and allow it to flow in the same direction as the shaft in the rotor structure 13, thereby avoiding the influence of the cooling oil entering the inner cavity of the housing 1 on the rotation speed of the rotor structure 13.

[0043] As the temperature of the cooling oil passing through the paraffin tube 62 located in the middle of the connecting pipe 41 gradually increases, the paraffin in the paraffin tube 62 begins to melt and expand, thereby pushing the push rod 63 upward. This stretches the spring, allowing the plug 64 at the top of the push rod 63 to move upward from the second outlet pipe 43, thus removing the obstruction to the end of the second outlet pipe 43. This allows a portion of the cooling oil in the connecting pipe 41 to flow from the second outlet pipe 43 to the multiple radiators 71, enabling the serpentine tubes in the multiple radiators 71 to be further cooled by the cooling fan 14, allowing the oil to flow into... The cooling oil in the inner cavity of the housing 1 is further cooled. With the cooperation of the first inlet pipe 53 and the second inlet pipe 73, the oil is introduced from both sides of the annular guide groove 510 to the stator structure 12, which improves the heat exchange efficiency of the stator structure 12. This allows the stator structure 12 to adapt to different ambient temperatures and operating conditions by selecting the appropriate heat exchange method according to its own temperature. This avoids the continuous high-intensity operation of the circulating pump in the heat exchange structure, which results in high energy consumption and costs. At the same time, it avoids the problem of untimely heat exchange due to the limitations of the motor's usage scenarios and operating conditions, which leads to an increased damage rate.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight motor heat dissipation structure, comprising a housing (1), a stator structure (12), a rotor structure (13), and a cooling fan (14), characterized in that: The stator structure (12) is fixedly installed in the middle of the inner cavity of the housing (1), the rotor structure (13) is installed in the inner cavity of the housing (1), the cooling fan (14) and the rotor structure (13) are fixedly installed coaxially, a liquid storage mechanism (3) is provided on the back of the housing (1), a connecting component (4) is provided on the top of the housing (1) near the cooling fan (14), a liquid guiding mechanism (5) is provided on one side of the inner cavity of the housing (1), the liquid guiding mechanism (5) includes a mounting base (51), a turbofan blade (55) is rotatably installed on the inner diameter of the mounting base (51), a temperature control component (6) is provided inside the connecting component (4), the temperature control component (6) includes a paraffin tube (62), and multiple sets of heat dissipation components (7) are provided on the outside of the cooling fan (14), the heat dissipation components (7) include multiple sets of radiators (71) arranged at equal intervals around the circumference. The connecting assembly (4) includes a connecting pipe (41) fixedly installed on the top of the housing (1) near the cooling fan (14). The bottom side and the top side of the connecting assembly (4) are respectively connected by a first liquid outlet pipe (42) and a second liquid outlet pipe (43). The end of the first liquid outlet pipe (42) away from the connecting pipe (41) is connected to the liquid storage tank (31). A sealing end plate (131) is fixedly installed on the side of the inner cavity of the housing (1) near the cooling fan (14). The mounting base (51) is an annular structure with an opening on one side. The mounting base (51) is fixedly installed on the side of the sealing end plate (131) away from the cooling fan (14). An annular guide groove (510) is provided inside the mounting base (51). A vortex groove (52) is provided on the circumference of the mounting base (51) near the turbine blade (55). The vortex groove (52) is connected to the annular guide groove (510). The top of the mounting base (51) is connected to a first liquid inlet pipe (53). The connecting pipe (41) and the annular guide groove (510) are connected through the first liquid inlet pipe (53). The mounting base (51) has liquid outlet holes (54) that are evenly spaced on the inner circumference. The side profile of the liquid outlet hole (54) is conical. The liquid outlet hole (54) is connected to the vortex groove (52). The temperature control component (6) includes a mounting bracket (61) fixedly installed on the inner wall of the connecting pipe (41), a paraffin tube (62) fixedly installed in the middle of the mounting bracket (61), a top rod (63) movably passing through the inside of the paraffin tube (62), a plug (64) fixedly installed at the top of the top rod (63), a tension spring (65) fixedly installed between the plug (64) and the mounting bracket (61), and the plug (64) is connected to the end of the second liquid outlet pipe (43) on the inner wall of the connecting pipe (41).

2. The lightweight motor heat dissipation structure according to claim 1, characterized in that: The bottom of the housing (1) is fixedly installed with a base (11), the middle shaft of the cooling fan (14) is rotated between the sealing end plate (131), and a fan cover (141) is fixedly installed on the outside of the housing (1) near the end opening of the cooling fan (14).

3. The lightweight motor heat dissipation structure according to claim 2, characterized in that: A junction box (2) is fixedly installed on the top of the housing (1) away from the connecting assembly (4), and the liquid storage mechanism (3) includes a liquid storage tank (31) fixedly installed on the back of the housing (1).

4. The lightweight motor heat dissipation structure according to claim 3, characterized in that: A circulation pump is fixedly installed at the bottom of the liquid storage tank (31), and the circulation pump is electrically connected to the junction box (2). The circulation pump at the bottom of the liquid storage tank (31) is connected to the side of the inner cavity of the housing (1) away from the mounting base (51) through a liquid guide pipe.

5. The lightweight motor heat dissipation structure according to claim 4, characterized in that: Multiple sets of the radiators (71) are fixedly installed at equal intervals on the outer circumferential edge of the fan cover (141).

6. The lightweight motor heat dissipation structure according to claim 5, characterized in that: An annular conduit (72) is fixedly installed between the serpentine tubes inside the multiple sets of radiators (71), and a second liquid inlet pipe (73) is connected through the bottom of the annular conduit (72) and the bottom of the inner wall of the annular guide groove (510).

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