Light-weight motor heat dissipation structure

Abstract

The invention relates to the technical field of motor heat dissipation, and discloses a lightweight motor heat dissipation structure, which comprises a shell, a stator structure, a rotor structure and a heat dissipation fan, cooling oil in the liquid storage tank is guided into the annular guide groove, the multiple sets of vortex grooves are diffused to the outside in a vortex mode, the cooling oil can be sprayed out to the turbofan blades at the inner diameter position in an accelerated mode through the conical liquid outlet holes in the inner wall of the annular guide groove, and therefore the turbofan blades at the lower portion can conduct vortex rotation; the introduced cooling oil can quickly flow from one side of the stator structure to the other side along the coil gap, so that the flow speed of the cooling oil in the inner cavity of the shell can be accelerated from one side of the stator structure, and the cooling and heat exchange efficiency of the compact coil in the stator structure is improved; the turbofan blades and the vortex grooves can enable cooling oil liquid to be diffused in a vortex mode to flow in the same direction with a rotating shaft in the rotor structure, and therefore the situation that the cooling oil liquid is guided into an inner cavity of the machine shell and influences the rotating speed of the rotor structure is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of motor heat dissipation, and specifically to a lightweight motor heat dissipation structure. Background Art

[0002] The existing motor rotor heat dissipation device uses fixed blades on the motor rotor end plate. When the motor rotates, the blades are driven to rotate to generate cooling air. Since the components inside the motor are dense and the gaps are small, the internal air guiding property is poor. Therefore, an additional heat dissipation mechanism needs to be set up to further cool it.

[0003] For example, the Chinese patent authorization announcement number is CN119813606A, which "discloses a heat dissipation frame for a generator rotor, including a frame bottom plate, a frame ring cover is arranged on the frame bottom plate, a stator structure is fixedly arranged inside the frame ring cover through an internal heat conduction member, a rotor structure is arranged inside the stator structure, a rotor heat conduction member is fixedly arranged in the middle of the rotor structure, the rotor heat conduction member includes a mounting long rod fixedly installed inside the rotor structure, one end of the mounting long rod is fixedly installed with a connecting strip plate, and a rotating shaft is fixedly installed on the connecting strip plate";

[0004] In the above cited document, by arranging a wind guiding member, the wind on one side of the filter baffle can be conveyed into the cylindrical barrel through the internal air groove. The rotor structure can transfer heat to the protruding long block, and the wind flowing in the internal air groove can take away the heat on the protruding long block, realizing the heat dissipation of the rotor structure, improving the air flow speed in a dense environment, and further improving the heat dissipation speed of the generator rotor.

[0005] However, the structures between multiple stator coils inside the existing motor are relatively tight, which slows down the flow rate of the cooling oil passing through the gaps between the stator coils, resulting in poor heat exchange efficiency between the coils. And under the limitations of the existing lightweight motor usage scenarios and environmental temperatures, the motor heat exchange can only be carried out through the circulating flow mode of the oil pump, and the heat exchange method is relatively single, and it is impossible to match a suitable heat exchange method for heat dissipation according to requirements. Summary of the Invention

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

[0007] To achieve the above object, the present invention provides the following technical solution: a lightweight motor heat dissipation structure, including a machine housing, a stator structure, a rotor structure, and a heat dissipation fan. The stator structure is fixedly installed in the middle of the inner cavity of the machine housing. The rotor structure is installed in the inner cavity of the machine housing. The heat dissipation fan is fixedly installed coaxially with the rotor structure. A liquid storage mechanism is arranged on the back of the machine housing. A connection component is arranged on one side of the top of the machine housing close to the heat dissipation fan. A liquid guiding mechanism is arranged on one side of the inner cavity of the machine housing. The liquid guiding mechanism includes a mounting seat. A scroll fan blade is rotatably installed on the inner diameter of the mounting seat. A temperature control component is arranged inside the connection component. The temperature control component includes a paraffin tube. A plurality of heat dissipation components are arranged outside the heat dissipation fan. The heat dissipation components include a plurality of radiators arranged at equal intervals in a circumferential direction.

[0008] Preferably, a base is fixedly installed at the bottom of the machine housing. A sealing end plate is fixedly installed on one side of the inner cavity of the machine housing close to the heat dissipation fan. The middle shaft of the rotor structure and the heat dissipation fan is rotatably installed between the sealing end plates. A fan cover is fixedly installed at the opening of the end of the machine housing close to the heat dissipation fan outside the machine housing.

[0009] Preferably, a junction box is fixedly installed on one side of the top of the machine housing far from the connection component. The liquid storage mechanism includes a liquid storage tank fixedly installed on the back of the machine 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 inner cavity of the machine housing far from the mounting seat through a liquid guiding pipe.

[0011] Preferably, the connection component includes a connection pipe fixedly installed on one side of the top of the machine housing close to the heat dissipation fan. A first liquid outlet pipe and a second liquid outlet pipe are respectively penetrated and connected on one side of the bottom and one side of the top of the connection component. One end of the first liquid outlet pipe far from the connection pipe is connected to the liquid storage tank.

[0012] Preferably, the mounting seat is an annular structure with an opening on one side. The mounting seat is fixedly installed on the side of the sealing end plate far from the heat dissipation fan. An annular guide groove is opened inside the mounting seat. Vortex grooves are respectively opened on the circumference of the mounting seat close to the scroll fan blade. The vortex grooves are communicated with the annular guide groove.

[0013] Preferably, a first liquid inlet pipe is penetrated and connected to the top of the mounting seat. The connection pipe is communicated with the annular guide groove through the first liquid inlet pipe. Liquid outlet holes are penetrated at equal intervals on the inner diameter circumference of the mounting seat. The side section of the liquid outlet hole is a conical structure. The liquid outlet hole is communicated with 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 is fixedly installed in the middle of the mounting bracket. A push rod movably penetrates through the paraffin tube. A blocking block is fixedly installed at the top end of the push rod. A tension spring is fixedly installed between the blocking block and the mounting bracket. The blocking block is connected to the end of the second liquid outlet pipe on the inner wall of the connecting pipe.

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

[0016] Preferably, an annular conduit is fixedly installed between the serpentine tubes inside multiple groups of the radiators. A second liquid inlet pipe penetrates and connects between the bottom of the annular conduit and 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 as follows:

[0018] In the present invention, the cooling oil liquid inside the liquid storage tank is introduced into the annular guide groove, and multiple groups of vortex grooves diffuse outward in a vortex manner. At the same time, the cooling oil liquid can also be sprayed from the liquid outlet holes on the inner wall of the annular guide groove to the vortex fan blades at the inner diameter. The cooling oil liquid is accelerated and sprayed out from the conical liquid outlet holes, so that the lower vortex fan blades can rotate in a vortex manner, and the introduced cooling oil liquid can quickly flow from one side of the stator structure along the coil gap to the other side, realizing that the cooling oil liquid in the inner cavity of the machine housing can accelerate the flow rate from one side of the stator structure, improving the cooling and heat exchange efficiency of the tight coils in the stator structure. At the same time, the vortex fan blades and the vortex grooves can vortex and diffuse the cooling oil liquid and flow in the same direction as the rotating shaft in the rotor structure, thus avoiding the influence of the cooling oil liquid introduced into the inner cavity of the machine housing on the rotation speed of the rotor structure.

[0019] When the temperature of the cooling oil liquid passing through the paraffin tube arranged in the middle of the connecting pipe in the present invention gradually rises, the paraffin in the paraffin tube starts to melt and expand in the tube, thereby pushing the push rod upward, stretching the spring, and enabling the blocking block at the top end of the push rod to move upward away from the second liquid outlet pipe, thus releasing the obstruction to the end of the second liquid outlet pipe. In this way, a part of the cooling oil liquid in the connecting pipe flows from the second liquid outlet pipe to multiple groups of radiators, enabling the serpentine tubes in multiple groups of radiators to be further blown by the cooling fan, further cooling the cooling oil liquid flowing into the inner cavity of the machine housing. In this way, with the cooperation of the first liquid inlet pipe and the second liquid inlet pipe, it is introduced to the stator structure from both sides of the annular guide groove, improving the heat exchange efficiency of the stator structure, realizing that the stator structure of this motor can select a heat exchange method adaptively according to its own temperature under different ambient temperatures and working conditions, avoiding the continuous high-intensity operation of the circulating pump in the heat exchange structure, with a large energy consumption cost, and at the same time, avoiding the problems of limited use scenarios and working conditions of this motor, untimely heat exchange, and increased damage rate. Description of the Drawings

[0020] Figure 1Schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 Schematic diagram of the side sectional structure of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the stator assembly and the rotor assembly in the present invention;

[0023] Figure 4 Schematic diagram of the structure of the stator assembly and the liquid storage tank in the present invention;

[0024] Figure 5 Schematic diagram of the structure of the scroll fan blade in the present invention;

[0025] Figure 6 is Figure 2 Schematic diagram of the partial enlarged structure at position A in;

[0026] Figure 7 is Figure 4 Schematic diagram of the partial enlarged structure at position B in.

[0027] In the figure: 1, machine housing; 2, junction box; 3, liquid storage mechanism; 4, connection component; 5, liquid guiding mechanism; 6, temperature control component; 7, heat dissipation component; 11, base; 12, stator structure; 13, rotor structure; 14, heat dissipation 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 seat; 52, scroll groove; 53, first liquid inlet pipe; 54, liquid outlet hole; 55, scroll fan blade; 510, annular guide groove; 61, mounting frame; 62, paraffin tube; 63, ejector rod; 64, plug; 65, tension spring; 71, radiator; 72, annular conduit; 73, second liquid inlet pipe. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Embodiment 1:

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

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

[0032] Among them, a base 11 is fixedly installed at the bottom of the machine housing 1, a sealing end plate 131 is fixedly installed on one side of the inner cavity of the machine housing 1 near the cooling fan 14, and the rotor structure 13 and the middle rotating shaft of the cooling fan 14 are rotatably installed between the sealing end plate 131. A fan cover 141 is fixedly installed at the opening of the end of the machine housing 1 near the cooling fan 14. A junction box 2 is fixedly installed on one side of the top of the machine housing 1 away from the connection component 4. The liquid storage mechanism 3 includes a liquid storage tank 31 fixedly installed on the back of the machine housing 1. A circulating pump is fixedly installed at the bottom of the liquid storage tank 31, and the circulating pump is electrically connected to the junction box 2. The circulating pump at the bottom of the liquid storage tank 31 is connected to the inner cavity of the machine housing 1 away from the mounting seat 51 through a liquid guiding pipe. The liquid storage tank 31 pumps the internal cooling oil into the annular guide groove 510 in the inner cavity of the mounting seat 51 through the circulating pump, and multiple sets of scroll grooves 52 spread outwards in a scroll shape.

[0033] Among them, the connection component 4 includes a connection pipe 41 fixedly installed on the top of the machine housing 1 near one side of the cooling fan 14. A first liquid outlet pipe 42 and a second liquid outlet pipe 43 penetrate and connect through the bottom side and the top side of the connection component 4 respectively. One end of the first liquid outlet pipe 42 away from the connection pipe 41 is connected to the liquid storage tank 31. The mounting seat 51 is an annular structure with an opening on one side. The mounting seat 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 formed inside the mounting seat 51. Scroll grooves 52 are respectively formed on the circumference of the mounting seat 51 near the scroll fan blade 55. The scroll grooves 52 are communicated with 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 from the liquid outlet holes 54 on the inner wall of the annular guide groove 510 towards the scroll fan blade 55 at the inner diameter.

[0034] Among them, a first liquid inlet pipe 53 penetrates and connects through the top of the mounting seat 51. The connection pipe 41 is connected to the annular guide groove 510 through the first liquid inlet pipe 53. Liquid outlet holes 54 are equidistantly penetrated through the inner circumference of the mounting seat 51. The side cross-section of the liquid outlet hole 54 is a conical structure. The liquid outlet hole 54 is communicated with the scroll groove 52. When the cooling oil is sprayed out from the liquid outlet hole 54, the conical structure inside it can increase the flow rate of the cooling oil, so that the lower scroll fan blade 55 can rotate in a scroll manner, and the introduced cooling oil can flow quickly from one side of the stator structure 12 along the coil gap to the other side. In this way, the flow rate of the cooling oil in the inner cavity of the machine housing 1 can be increased from one side of the stator structure 12, thereby improving the cooling heat exchange efficiency of the tight coils in the stator structure 12;

[0035] As Figures 1-4 shown, in this embodiment, the lightweight motor heat dissipation structure can supply power to the stator structure 12 in 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] As Figure 5 、 Figure 7 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 seat 51 through the circulating pump, and multiple sets of vortex grooves 52 diffuse outward in a vortex manner. At the same time, the cooling oil can also be sprayed from the liquid outlet holes 54 on the inner wall of the annular guide groove 510 to the vortex fan blades 55 at the inner diameter. When the cooling oil is sprayed from the liquid outlet holes 54, the conical structure inside it can increase the flow rate of the cooling oil, so that the lower vortex fan blades 55 can rotate in a vortex manner, and the introduced cooling oil can flow quickly from one side of the stator structure 12 along the coil gap to the other side. In this way, the flow rate of the cooling oil in the inner cavity of the machine housing 1 can be increased from one side of the stator structure 12, thereby improving the cooling and heat exchange efficiency of the tight coils in the stator structure 12. At the same time, the vortex fan blades 55 and the vortex grooves 52 can vortex-diffuse the cooling oil and 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 machine housing 1 on the rotation speed of the rotor structure 13;

[0037] Embodiment 2:

[0038] Based on Embodiment 1, this embodiment introduces a lightweight motor heat dissipation structure, as Figure 3 、 Figure 5 、 Figure 6 shown, a temperature control component 6 is arranged inside the connection component 4. The temperature control component 6 includes a paraffin tube 62, and multiple sets of heat dissipation components 7 are arranged outside the cooling fan 14. The heat dissipation components 7 include multiple sets of radiators 71 arranged at equal intervals in a circumferential direction.

[0039] Among them, the temperature control component 6 includes a mounting frame 61 fixedly installed on the inner wall of the connecting pipe 41. A paraffin tube 62 is fixedly installed in the middle of the mounting frame 61. A push rod 63 is movably penetrated through the paraffin tube 62. A blocking block 64 is fixedly installed at the top end of the push rod 63. A tension spring 65 is fixedly installed between the blocking block 64 and the mounting frame 61. The blocking block 64 is connected to the end of the second liquid outlet pipe 43 on the inner wall of the connecting pipe 41. A plurality of radiators 71 are respectively fixedly installed at equal intervals on the outer peripheral edge of the fan cover 141. An annular conduit 72 is fixedly installed between the serpentine tubes inside the plurality of radiators 71. A second liquid inlet pipe 73 is penetrated and connected between the bottom of the annular conduit 72 and the bottom of the inner wall of the annular guide groove 510. When the temperature of the cooling oil passing through the paraffin tube 62 provided in the middle of the connecting pipe 41 gradually increases, the paraffin in the paraffin tube 62 begins to melt and expand in the tube, thereby pushing the push rod 63 upward, stretching the spring, and enabling the blocking block 64 at the top end of the push rod 63 to move upward from the second liquid outlet pipe 43, thereby removing the obstruction to the end of the second liquid outlet pipe 43. In this way, a part of the cooling oil in the connecting pipe 41 flows from the second liquid outlet pipe 43 to the plurality of radiators 71, enabling the serpentine tubes in the plurality of radiators 71 to be further blown by the cooling fan 14, further cooling the cooling oil flowing into the inner cavity of the machine housing 1. In this way, under the cooperation of the first liquid inlet pipe 53 and the second liquid inlet pipe 73, it is introduced to the stator structure 12 from both sides of the annular guide groove 510, improving the heat exchange efficiency of the stator structure 12.

[0040] As Figures 4-6 shown, in this embodiment, when the temperature of the cooling oil passing through the paraffin tube 62 provided in the middle of the connecting pipe 41 gradually increases, the paraffin in the paraffin tube 62 begins to melt and expand in the tube, thereby pushing the push rod 63 upward, stretching the spring, and enabling the blocking block 64 at the top end of the push rod 63 to move upward from the second liquid outlet pipe 43, thereby removing the obstruction to the end of the second liquid outlet pipe 43. In this way, a part of the cooling oil in the connecting pipe 41 flows from the second liquid outlet pipe 43 to the plurality of radiators 71, enabling the serpentine tubes in the plurality of radiators 71 to be further blown by the cooling fan 14, further cooling the cooling oil flowing into the inner cavity of the machine housing 1. In this way, under the cooperation of the first liquid inlet pipe 53 and the second liquid inlet pipe 73, it is introduced to the stator structure 12 from both sides of the annular guide groove 510, improving the heat exchange efficiency of the stator structure 12, realizing that the motor stator structure 12 can select a heat exchange method adaptively according to its own temperature in different ambient temperatures and working states, avoiding the continuous high-intensity operation of the circulation pump in the heat exchange structure, with a large energy consumption cost. At the same time, it avoids the problems of limited use scenarios and working states of the motor, and untimely heat exchange, resulting in an increased damage rate.

[0041] Working principle: When in use, 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 seat 51 through the circulation pump. Multiple sets of vortex grooves 52 diffuse outward in a vortex manner. At the same time, the cooling oil can also be sprayed from the liquid outlet holes 54 on the inner wall of the annular guide groove 510 to the vortex fan blades 55 at the inner diameter. When the cooling oil sprays out from the liquid outlet holes 54, the conical structure inside it can increase the flow rate of the cooling oil, so that the lower vortex fan blades 55 can rotate in a vortex manner, and the introduced cooling oil can quickly flow from one side of the stator structure 12 along the coil gap to the other side. In this way, the flow rate of the cooling oil in the inner cavity of the machine housing 1 can be increased from one side of the stator structure 12, thereby improving the cooling and heat exchange efficiency of the tightly wound coils in the stator structure 12;

[0042] At the same time, the vortex fan blades 55 and the vortex grooves 52 can make the cooling oil vortex and diffuse and flow in the same direction as the rotating shaft in the rotor structure 13, thus avoiding the influence of the cooling oil introduced into the inner cavity of the machine housing 1 on the rotation speed of the rotor structure 13;

[0043] When the temperature of the cooling oil passing through the paraffin tube 62 in the middle of the connecting pipe 41 gradually rises, the paraffin in the paraffin tube 62 begins to melt and expand in the tube, thereby pushing the ejector rod 63 upward, stretching the spring, and enabling the plug 64 at the top of the ejector rod 63 to move upward from the second liquid outlet pipe 43, thus removing the obstruction at the end of the second liquid outlet pipe 43. In this way, a part of the cooling oil in the connecting pipe 41 flows from the second liquid outlet pipe 43 to multiple sets of radiators 71, and the serpentine tubes in the multiple sets of radiators 71 can be further blown by the cooling fan 14, so that the cooling oil flowing into the inner cavity of the machine housing 1 is further cooled. In this way, with the cooperation of the first liquid inlet pipe 53 and the second liquid inlet pipe 73, it is introduced to the stator structure 12 from both sides of the annular guide groove 510, improving the heat exchange efficiency of the stator structure 12, and realizing that the stator structure 12 of the motor can select the heat exchange method adaptively according to its own temperature under different ambient temperatures and working states, avoiding the continuous high-intensity operation of the circulation pump in the heat exchange structure, with a large energy consumption cost, and at the same time, avoiding the problems of limited use scenarios and working states of the motor, untimely heat exchange, and increased damage rate.

[0044] Although the embodiments of the present invention have been shown and described, for those skilled in the art, it can be understood that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention 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 heat dissipation fan (14), characterized in that: The stator structure (12) is fixedly mounted in the middle of the inner cavity of the casing (1); the rotor structure (13) is mounted in the inner cavity of the casing (1); the cooling fan (14) and the rotor structure (13) are fixedly mounted coaxially; a liquid storage mechanism (3) is arranged on the back of the casing (1); a connecting component (4) is arranged on the top of the casing (1) close to the cooling fan (14); a liquid guide mechanism (5) is arranged on one side of the inner cavity of the casing (1); the liquid guide mechanism (5) comprises a mounting seat (51); a turbofan blade (55) is rotatably mounted on the inner diameter of the mounting seat (51); a temperature control component (6) is arranged inside the connecting component (4); the temperature control component (6) comprises a paraffin tube (62); a plurality of heat dissipation components (7) are arranged on the outside of the cooling fan (14); the heat dissipation components (7) comprise a plurality of radiators (71) arranged at equal intervals around the circumference.

2. A lightweight motor heat dissipation structure according to claim 1, characterized in that: A base (11) is fixedly mounted on the bottom of the housing (1); a sealing end plate (131) is fixedly mounted on the inner cavity of the housing (1) near the cooling fan (14); the rotor structure (13) is rotatably mounted with a central rotating shaft of the cooling fan (14) and the sealing end plate (131); and a fan cover (141) is fixedly mounted on the outside of the housing (1) near the end opening of the cooling fan (14).

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

4. A lightweight motor heat dissipation structure according to claim 3, characterized in that: A circulation pump is fixedly mounted 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 inner cavity of the housing (1) away from the mounting seat (51) via a liquid conduit.

5. A lightweight motor heat dissipation structure according to claim 4, characterized in that: The connecting assembly (4) comprises a connecting pipe (41) fixedly mounted 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 side and the top side of the connecting assembly (4); and an end of the first liquid outlet pipe (42) away from the connecting pipe (41) is connected to the liquid storage tank (31).

6. A lightweight motor heat dissipation structure according to claim 5, characterized in that: The mounting seat (51) is an annular structure with an opening on one side. The mounting seat (51) is fixedly mounted on the side of the sealing end plate (131) away from the heat dissipation fan (14). An annular guide groove (510) is provided inside the mounting seat (51). Vortex grooves (52) are respectively provided on the circumference of the side of the mounting seat (51) close to the turbofan blade (55). The vortex grooves (52) are connected to the annular guide grooves (510).

7. A lightweight motor heat dissipation structure according to claim 6, characterized in that: A first liquid inlet pipe (53) is connected through the top of the mounting seat (51); the connecting pipe (41) and the annular guide groove (510) are connected through the first liquid inlet pipe (53); liquid outlet holes (54) are formed through the inner circumference of the mounting seat (51) at equal intervals; the side section of the liquid outlet holes (54) is a conical structure; and the liquid outlet holes (54) are connected to the vortex groove (52).

8. A lightweight motor heat dissipation structure according to claim 7, characterized in that: The temperature control component (6) comprises a mounting frame (61) fixedly mounted on the inner wall of the connecting tube (41); the paraffin tube (62) is fixedly mounted in the middle of the mounting frame (61); a push rod (63) is movably penetrated inside the paraffin tube (62); a blocking block (64) is fixedly mounted on the top of the push rod (63); a tension spring (65) is fixedly mounted between the blocking block (64) and the mounting frame (61); and the blocking block (64) is connected to the end of the second liquid outlet pipe (43) on the inner wall of the connecting tube (41).

9. A lightweight motor heat dissipation structure according to claim 8, characterized in that: A plurality of groups of radiators (71) are fixedly mounted at equal intervals on the outer circumferential edge of the fan cover (141).

10. A lightweight motor heat dissipation structure according to claim 9, characterized in that: An annular conduit (72) is fixedly installed between the multiple groups of serpentine tubes inside the radiator (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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