Motor with casting shell and stamping end cover

Abstract

The invention relates to the technical field of warehousing, and discloses a motor with a casting shell and a stamping end cover, the motor comprises the casting shell and the stamping end cover, the motor shell is manufactured by adopting a casting process, the requirements of a complex structure and high strength can be met, meanwhile, the stamping end cover is adopted, and the advantages of high production efficiency and low cost of the stamping process are utilized; the magnetic field of the magnetic rods can guide cooling airflow to flow along a specific path to directly take away heat in the inner cavity of the casting shell through gaps among the rectangular phase change microcapsules, and the strip-shaped frames are annularly arranged, so that the multiple sets of strip-shaped phase change microcapsules can form a wrapping type heat dissipation interval from the outer portion of the second bearing area. When gas passes through the heat absorption mesh enclosure, part of heat is conducted to the heat absorption mesh enclosure, and the heat absorption mesh enclosure absorbs the heat and conducts the heat to the annular chuck for centralized heat dissipation, so that overheating of the second bearing area is reduced, the load temperature of the motor rotor part is prevented from being too high, and long-term use of the motor is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor manufacturing, in particular to a motor with a cast shell and a stamped end cover. BACKGROUND

[0002] In the existing motor structure, the manufacturing method of the motor shell and the end cover is relatively single. The traditional motor shell and end cover are mostly made of single casting process or stamping process. Although the motor shell and end cover manufactured by casting process can obtain complex structure and high strength, the production cycle of casting process is long, the cost is high, and defects such as pores and sand holes are easily produced in the casting process, which affects the overall performance and service life of the motor. While the motor shell and end cover manufactured by stamping process have high production efficiency and low cost, the structural strength and rigidity of the stamped part are relatively weak, which is difficult to meet the application scenarios with high requirements for motor structural strength, and the heat dissipation performance of the stamped part is also relatively poor, which is not conducive to the heat dissipation of the motor during long time operation, and is easy to cause overheating of the motor, affecting the performance and reliability of the motor. SUMMARY

[0003] (I) Technical problems solved In view of the shortcomings of the prior art, the present application provides a motor with a cast shell and a stamped end cover, which comprises a cast shell and a stamped end cover. The high-strength material and topologically optimized heat dissipation rib design of the cast shell ensure the strength of the motor structure and good heat dissipation performance. At the same time, the heat dissipation rib hole, the shell heat dissipation ring and the heat dissipation guide cover further optimize the heat dissipation performance of one side of the cast shell. The three-layer stacking structure of the stamped end cover further improves the structural strength of the end cover, so that the entire motor structure can adapt to various complex working environments, and can effectively dissipate heat in time during long time operation, avoiding overheating of the motor, improving the reliability and service life of the motor.

[0004] (II) Technical scheme In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: A motor with a cast shell and a stamped end cover, comprising a cast shell and a stamped end cover, characterized in that: the inner wall of the cast shell is provided with a topologically optimized heat dissipation rib, and the inner wall of the cast shell is provided with a phase change material coating, the topologically optimized heat dissipation rib is embedded with a copper-graphene heat pipe, the outer surface of the cast shell is provided with a shell heat dissipation ring, the stamped end cover has an acoustic metamaterial pit array and a piezoelectric fiber sheet, the edge of the stamped end cover is provided with a magnetic sealing interface, the cast shell and the stamped end cover are assembled by bolt locking, the stamped end cover is a gradient composite structure, which is a galvanized steel layer, a damping glue layer and an aluminum foil layer in sequence, and is formed by rolling.

[0005] Preferably, the inner cavity of the casting shell is provided with a sealing coating near the stamping end cover area, the inner cavity of the casting shell is provided with heat dissipation rib holes away from the sealing coating side, the side shell disc is installed on the side of the casting shell away from the stamping end cover, the bearing frame two is installed on the surface center area of the side shell disc, the bearing two is installed in the inner cavity of the bearing frame two, the stator module is installed between the bearing frame two and the stamping end cover, the commutator is installed on the outside of the stamping end cover, the rotor module is installed on the surface of the stator module, one end of the rotor module penetrates through the inner cavity of the bearing frame two and the bearing two, one end of the rotor module is fixed with the rotating end of the bearing two, the blade is sleeved on one end of the rotor module, the locking ring is installed on one end of the rotor module, and the counterweight ring is installed on one side of the surface of the stator module.

[0006] Preferably, the magnetic flux density of the magnetic sealing interface is 1.0T, the topological optimization heat dissipation rib is a fractal branch structure, the distance between multiple groups of the topological optimization heat dissipation rib is 1 / 12 of the diameter of the shell, the piezoelectric fiber sheet is made of PZT-5H material, the stamping end cover surface is provided with end cover hole one and end cover hole two, and the stamping end cover inner surface is provided with annular rib groove one and annular rib groove two.

[0007] Preferably, the mounting seat one is installed on the surface of the casting shell, the mounting seat one is symmetrically provided in two groups, the horizontal frame is installed between adjacent mounting seat ones, the bottom of the horizontal frame is arc-shaped, the horizontal frame is attached to the surface of the casting shell, and the mounting lug is installed on the top of the mounting seat one.

[0008] Preferably, the casting shell contains 8vol% short carbon fiber reinforced aluminum alloy.

[0009] Preferably, the Helmholtz resonance frequency of the acoustic metamaterial pit array is 2000±100Hz, and the ratio of pit depth to diameter is 0.53.

[0010] Preferably, the mounting seat two is installed on the surface of the heat dissipation guide cover, and the positioning hole one and the positioning hole two are arranged on the surface of the mounting seat two.

[0011] Preferably, the mounting groove is arranged on the surface of the mounting lug, and the side hole is arranged on one side of the mounting groove.

[0012] Preferably, the mounting hole is arranged on the inner side of the mounting groove, and the locking disc is installed on the inner side of the mounting hole.

[0013] Preferably, the heat dissipation guide cover is installed on the outer surface of the side shell disc, and the heat conduction pad is arranged on the surface of the heat dissipation guide cover.

[0014] (Three) beneficial effects Compared with the prior art, the present application provides an electric machine with a casting shell and a stamping end cover, which has the following beneficial effects: 1. An electric machine with a cast shell and a stamping end cover, the electric machine shell is manufactured by a casting process, which can meet the requirements of complex structure and high strength, while the stamping end cover takes advantage of the high production efficiency and low cost of the stamping process, compared with the traditional single process manufactured electric machine structure, the production cost is effectively reduced and the production cycle is shortened under the premise of ensuring performance.

[0015] 2. An electric machine with a cast shell and a stamping end cover, when in use, the high-strength material and topological optimization heat dissipation rib design of the cast shell ensure the strength and good heat dissipation performance of the electric machine structure, while the heat dissipation rib hole, shell heat dissipation ring and heat dissipation guide cover further optimize the heat dissipation performance of one side of the cast shell, and the three-layer stacking structure of the stamping end cover further improves the structural strength of the end cover, so that the entire electric machine structure can adapt to various complex working environments, and can effectively dissipate heat in time during long-term operation, avoiding overheating of the electric machine, improving the reliability and service life of the electric machine; 3. An electric machine with a cast shell and a stamping end cover, by arranging the magnetic distribution of the magnetic rod and the magnetic patch as SNS alternately arranged, which makes the heat in the inner cavity of the cast shell be blocked and accumulated in the part of the cast shell inner cavity close to the columnar heat dissipation bin through magnetic field eddy current, when the blade is driven by the rotor module to suck in the external cooling gas, the magnetic field of the magnetic rod can guide the cooling airflow to flow along a specific path to directly take away the heat in the inner cavity of the cast shell through the gap between the rectangular phase change microcapsules, in the process of heat being taken away by the cooling gas, in order to prevent excessive heat conduction to the cast shell, the rectangular phase change microcapsules inside the columnar heat dissipation bin will absorb the heat absorbed by the columnar heat dissipation bin, so as to realize the mutual assistance of the multi-stage cooling mechanism inside the electric machine, prolonging the continuous heat dissipation time of the electric machine; 4. An electric machine with a cast shell and a stamping end cover, in order to avoid overheating of the bearing two area leading to increased rotor module heat loss, an embedded groove and a strip-shaped groove are provided in the side shell disc part, a ring-shaped chuck is installed in the embedded groove and the strip-shaped groove, a strip-shaped phase change microcapsule is installed on the surface of the ring-shaped chuck through the chuck groove, the gap between the strip-shaped phase change microcapsules can be used as a gas discharge channel, at the same time, the strip-shaped phase change microcapsules are installed on the surface of the strip-shaped frame, and the strip-shaped frame is arranged in a ring shape, so that multiple groups of strip-shaped phase change microcapsules can form a wrapped heat dissipation interval from the outside of the bearing two area, when the gas passes through the heat absorption screen, part of the heat will be conducted to the heat absorption screen, the heat absorption screen absorbs heat and conducts it to the ring-shaped chuck for concentrated heat dissipation, thereby reducing the overheating of the bearing two area, avoiding the load temperature of the rotor part of the electric machine being too high, and ensuring the long-term use of the electric machine. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The structure of the present application is shown in the figure.

[0017] Figure 2Figure 1 is a schematic diagram of the acoustic metamaterial cavity array, ring-shaped rib groove one and ring-shaped rib groove two in the present application.

[0018] Figure 3 Figure 2 is a schematic diagram of the topological optimization heat dissipation rib, phase change material coating and sealing coating in the present application.

[0019] Figure 4 Figure 3 is a schematic diagram of the end cover hole one and end cover hole two in the present application.

[0020] Figure 5 Figure 4 is a schematic diagram of the locking ring and blade in the present application.

[0021] Figure 6 Figure 5 is a schematic diagram of the piezoelectric fiber sheet and magnetic sealing interface in the present application.

[0022] Figure 7 Figure 6 is a schematic diagram of the mounting seat one in the present application.

[0023] Figure 8 Figure 7 is a schematic diagram of the side shell disc in the present application. Figure 9 Figure 8 is a schematic diagram of the strip-shaped groove and heat conduction groove in the present application. Figure 10 Figure 9 is a schematic diagram of the heat insulation rib block in the present application. Figure 11 Figure 10 is a schematic diagram of the chuck groove and magnetic rod in the present application. Figure 12 Figure 11 is a schematic diagram of the ring-shaped chuck part from the first perspective in the present application. Figure 13 Figure 12 is a schematic diagram of the ring-shaped chuck part from the second perspective in the present application. Figure 14 Figure 13 is a schematic diagram of the columnar heat dissipation bin and rectangular phase change microcapsule in the present application. Figure 15 Figure 14 is a schematic diagram of the special-shaped outer ring and magnetic patch in the present application. Fig. 1, the casting shell; 11, the topology-optimized heat dissipation rib; 12, the phase change material coating; 13, the sealing coating; 14, the heat dissipation rib hole; 15, the columnar heat dissipation bin; 16, the rectangular phase change microcapsule; 2, the shell heat dissipation ring; 3, the heat dissipation guide cover; 4, the heat conduction pad; 5, the mounting seat one; 51, the cross frame; 52, the mounting lug; 53, the mounting groove; 54, the side hole; 55, the locking disc; 56, the mounting hole; 6, the mounting seat two; 61, the positioning hole one; 62, the positioning hole two; 7, the stamped end cover; 71, the acoustic metamaterial pit array; 72, the annular rib groove one; 73, the annular rib groove two; 74, the end cover hole one; 75, the end cover hole two; 78, the piezoelectric fiber sheet; 79, the magnetic sealing interface; 8, the side shell disc; 81, the bearing frame two; 82, the bearing two; 83, the heat insulation rib block; 84, the embedded groove; 85, the heat absorption mesh cover; 86, the annular chuck; 861, the chuck groove; 862, the magnetic rod; 863, the strip-shaped frame; 864, the strip-shaped phase change microcapsule; 87, the strip-shaped groove; 88, the heat conduction groove; 9, the commutator; 91, the stator module; 92, the rotor module; 93, the counterweight ring; 94, the locking ring; 95, the blade; 951, the special-shaped outer ring; 952, the magnetic patch. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, fixed connection refers to the connection of parts or components after being fixed without any relative movement; transmission connection refers to a connection mode in which mechanical movement or torque is transmitted to other working components through a transmission member; sliding connection refers to a connection mode in which two objects are in contact but not fixed, and can slide relative to each other; and rotary connection refers to a connection mode in which two objects are in contact but not fixed, and can rotate relative to each other.

[0027] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0028] Embodiment one: The embodiment provides an electric machine with a cast shell 1 and a stamped end cover 7, which has the following technical features.

[0029] Please refer to Figures 1-15 An electric machine with a cast shell 1 and a stamped end cover 7, comprising a cast shell 1 and a stamped end cover 7, the inner wall of the cast shell 1 is provided with a topologically optimized heat dissipation rib 11, and the inner wall of the cast shell 1 is provided with a phase change material coating 12, the topologically optimized heat dissipation rib 11 is embedded with a copper-graphene heat pipe, the outer surface of the cast shell 1 is provided with a shell heat dissipation ring 2, the stamped end cover 7 has an acoustic metamaterial pit array 71 and a piezoelectric fiber sheet 78, the edge of the stamped end cover 7 is provided with a magnetic sealing interface 79, the cast shell 1 and the stamped end cover 7 are assembled by bolt locking, the stamped end cover 7 is a gradient composite structure, which is a galvanized steel layer, a damping rubber layer and an aluminum foil layer in sequence, and is formed by rolling.

[0030] It should be noted that the galvanized steel layer (0.5mm) serves as a bearing main body layer, providing a tensile strength of more than 300MPa, effectively resisting uneven magnetic tension during operation of the electric machine; The damping rubber layer (0.2mm) adopts a butyl rubber / graphene composite system to convert 200-2000Hz frequency band vibration energy into heat energy, so as to reduce end cover radiation noise, and the process breakthrough is that the pre-vulcanization degree of the rubber layer is controlled at 30% during rolling, so as to ensure the interlayer bonding strength and retain the deformation adaptability during subsequent stamping forming; The aluminum foil layer (0.3mm) is made of 1060 aluminum alloy treated by ultra-fine crystal (grain size <5um), and the elongation is increased to 15%, forming a hard-soft-hard structure with the rubber layer and improving impact energy absorption efficiency.

[0031] In an optional embodiment, a sealing coating 13 is provided in the inner cavity of the casting shell 1 near the stamped end cover 7, a heat dissipation rib hole 14 is provided on the side of the inner cavity of the casting shell 1 away from the sealing coating 13, a side shell plate 8 is installed on the side of the casting shell 1 away from the stamped end cover 7, a bearing frame 2 81 is installed in the center area of ​​the surface of the side shell plate 8, a bearing 2 82 is installed in the inner cavity of the bearing frame 2 81, a stator module 91 is installed between the bearing frame 2 81 and the stamped end cover 7, a commutator 9 is installed on the outside of the stamped end cover 7, and the stator module 9 1 is mounted on the surface of the stator module 91. One end of the rotor module 92 passes through the inner cavity of the bearing frame 2 81 and the bearing 2 82. One end of the rotor module 92 is fixed to the rotating end of the bearing 2 82. A blade 95 is sleeved on one end of the rotor module 92. A locking ring 94 is mounted on one end of the rotor module 92. A counterweight ring 93 is mounted on one side of the surface of the stator module 91. A heat-insulating rib block 83 is annularly mounted on the outer surface of the bearing frame 2 81. A special-shaped outer ring 951 is mounted on the outside of the blade 95. A magnetic patch 952 is mounted on the surface of the special-shaped outer ring 951.

[0032] It should be noted that the magnetic distribution of the magnetic rod 862 and the magnetic patch 952 is SNS alternating arrangement. The alternating magnetic arrangement of the magnetic patch 952 can reduce the accumulation of metal debris in the exhaust gas, allowing metal impurities to be better discharged along with the gas circulation. This allows the heat in the inner cavity of the casting shell 1 to be blocked by the eddy current of the magnetic field and accumulated in the inner cavity of the casting shell 1 near the columnar heat dissipation bin 15. When the blade 95 is driven by the rotor module 92 to inhale the external cooling gas, the magnetic field of the magnetic rod 862 can guide the cooling airflow to flow along a specific path and directly take away the heat in the inner cavity of the casting shell 1 through the gaps between the rectangular phase change microcapsules 16.

[0033] In an optional embodiment, the magnetic flux density of the magnetic sealing interface 79 is 1.0T, the topologically optimized heat dissipation ribs 11 have a fractal branch structure, the spacing between multiple groups of topologically optimized heat dissipation ribs 11 is 1 / 12 of the shell diameter, the piezoelectric fiber sheet 78 is set to PZT-5H material, the surface of the stamped end cover 7 is provided with end cover hole 1 74 and end cover hole 2 75, and the inner surface of the stamped end cover 7 is provided with an annular rib groove 1 72 and an annular rib groove 2 73.

[0034] In an optional embodiment, a mounting seat 5 is installed on the surface of the casting shell 1, and the mounting seat 5 is symmetrically arranged in two groups. A cross frame 51 is installed between adjacent mounting seats 5. The bottom of the cross frame 51 is arc-shaped, and the cross frame 51 fits the surface of the casting shell 1. A mounting ear 52 is installed on the top of the mounting seat 5.

[0035] It should be noted that the end cover hole one 74 and the end cover hole two 75 of the stamping end cover 7 are aligned with the positioning hole one 61 and the positioning hole two 62 on the mounting seat two 6 of the surface of the cast shell 1 through the guide column on the special jig, so that the stamping end cover 7 and the cast shell 1 are preliminarily positioned, and then the stamping end cover 7 and the rotor module 92 are pressed into the cast shell 1 along the guide column, and finally the bolts are screwed through the connecting holes of the stamping end cover 7 and the positioning holes of the cast shell 1 to be fixed.

[0036] In an optional embodiment, the cast shell 1 contains 8vol% short carbon fiber reinforced aluminum alloy.

[0037] It should be noted that the length of the short carbon fiber is 0.2-0.5mm uniformly dispersed in the ZL116 aluminum alloy matrix, forming a three-dimensional reinforcing network, so that the tensile strength of the shell is increased from 345MPa to 480±20MPa, the yield strength is 420MPa, the modulus of carbon fiber is 200-700GPa, and the modulus of aluminum alloy is 69-79GPa, forming a gradient matching, the elastic modulus of the shell is increased to 110GPa, and the impact toughness is maintained above 22kJ / m², avoiding the brittleness risk of pure carbon fiber composite.

[0038] In an optional embodiment, the Helmholtz resonance frequency of the acoustic metamaterial pit array 71 is 2000±100Hz, and the pit depth to diameter ratio is 0.53.

[0039] It should be noted that the resonance frequency of 2000+100Hz accurately covers the sensitive frequency range of mechanical high frequency noise (such as motor electromagnetic noise and gear meshing noise), so that the sound absorption coefficient of this frequency band is increased to more than 0.85.

[0040] In an optional embodiment, the mounting seat two 6 is mounted on the surface of the heat dissipation guide cover 3, the positioning hole one 61 and the positioning hole two 62 are arranged on the surface of the mounting seat two 6, the mounting lug 52 is arranged on the surface of the mounting seat two 6, the mounting groove 53 is arranged on one side of the mounting lug 52, the side hole 54 is arranged on one side of the mounting groove 53, the mounting hole 56 is arranged on the inner side of the mounting groove 53, and the locking disc 55 is arranged on the inner side of the mounting hole 56.

[0041] It should be noted that the cast shell 1 and the stamping end cover 7 are precisely positioned through the cooperation of the positioning hole one 61, the positioning hole two 62, the end cover hole one 74 and the end cover hole two 75, and then connected by bolts, so as to improve the assembly precision and assembly efficiency.

[0042] In an optional embodiment, the surface of the side shell disc 8 is also provided with a magnetic field heat vortex guiding unit, which comprises a ring-shaped chuck 86, the surface of the side shell disc 8 is provided with an embedded groove 84, the inside of the embedded groove 84 is also provided with a strip-shaped groove 87, the bottom of the strip-shaped groove 87 is provided with a heat conduction groove 88, the ring-shaped chuck 86 is installed inside the embedded groove 84 and the strip-shaped groove 87, and the surface of the ring-shaped chuck 86 is provided with a chuck groove 861, and the inside of the chuck groove 861 is installed with a magnetic rod 862.

[0043] It should be noted that the magnetic distribution of the magnetic rod 862 and the magnetic patch 952 is that the SNS is arranged alternately, which makes the heat in the inner cavity of the casting shell 1 be blocked and accumulated in the part of the inner cavity of the casting shell 1 close to the cylindrical heat dissipation bin 15 through the magnetic field vortex. When the blade 95 is driven by the rotor module 92 to suck in the external cooling gas, the magnetic field of the magnetic rod 862 can guide the cooling gas to flow along a specific path to directly take away the heat in the inner cavity of the casting shell 1 through the gap between the rectangular phase change microcapsules 16.

[0044] In an optional embodiment, the surface of the side shell disc 8 is also provided with a magnetic field heat vortex guiding unit, which further comprises a strip-shaped frame 863, the strip-shaped frame 863 is embeddedly installed on one side of the ring-shaped chuck 86, the surface of the strip-shaped frame 863 is embeddedly installed with a strip-shaped phase change microcapsule 864, gaps are arranged between adjacent strip-shaped phase change microcapsules 864, the installation area of the strip-shaped phase change microcapsule 864 is communicated with the chuck groove 861, the cylindrical heat dissipation bin 15 is installed inside the heat dissipation rib hole 14, the rectangular phase change microcapsules 16 are embeddedly installed at equal intervals inside the cylindrical heat dissipation bin 15, and the inside of the cylindrical heat dissipation bin 15 is provided with a through hole.

[0045] It should be noted that the strip-shaped frame 863 is arranged in a ring shape, so that multiple groups of strip-shaped phase change microcapsules 864 can form a cladding type heat dissipation interval from the outside of the bearing two 82 area. When the gas passes through the heat absorption mesh cover 85, part of the heat is conducted to the heat absorption mesh cover 85, the heat absorption mesh cover 85 absorbs the heat and conducts it to the ring-shaped chuck 86 for concentrated heat dissipation, thereby reducing the overheating of the bearing two 82 area and avoiding the load temperature of the motor rotor part being too high, and ensuring the long-term use of the motor.

[0046] In an optional embodiment, the outer surface of the side shell disc 8 is installed with a heat dissipation guide cover 3, and the surface of the heat dissipation guide cover 3 is provided with a heat conduction pad 4.

[0047] It should be noted that the heat conduction pad 4 can absorb and conduct the heat emitted from the outer side area of the side shell disc 8, reduce the continuous accumulation of heat in the area of the side shell disc 8, and be beneficial to the improvement of the local heat dissipation function of the casting shell 1.

[0048] Working principle: First, install the stator module 91 in the bearing frame two 81 inside the casting shell 1, then install the bearing in the bearing frame two 81 inner cavity of the stamping end cover 7, and insert the rotor module 92 into the bearing rotating end, then align the positioning hole one 61 and the positioning hole two 62 on the mounting seat two 6 on the surface of the casting shell 1 with the end cover hole one 74 and the end cover hole two 75 of the stamping end cover 7 through the guide column on the special tool, so that the stamping end cover 7 and the casting shell 1 are preliminarily positioned, then press the stamping end cover 7 and its rotor module 92 into the casting shell 1 along the guide column, and finally use the bolt to pass through the connecting hole of the stamping end cover 7 and the positioning hole of the casting shell 1 to tighten and fix, complete the assembly of the motor; The high-strength material of the casting shell 1 and the topological optimization of the heat dissipation rib 11 design ensure the strength of the motor structure and good heat dissipation performance, while the heat dissipation rib hole 14, the shell heat dissipation ring 2 and the heat dissipation guide cover 3 further optimize the heat dissipation performance on one side of the casting shell 1, and the three-layer stacking structure of the stamping end cover 7 further improves the structural strength of the end cover, so that the whole motor structure can adapt to various complex working environments, and can effectively dissipate heat in time during long time operation, avoiding overheating of the motor, improving the reliability and service life of the motor; The casting shell 1 and the stamping end cover 7 are precisely positioned through the cooperation of the positioning hole one 61, the positioning hole two 62 and the end cover hole one 74, the end cover hole two 75, and then connected by bolts, which improves the assembly precision and efficiency, reduces the error and time consumption in the assembly process, and at the same time, by combining the casting process and the stamping process, the advantages of the two processes are fully utilized, realizing the performance improvement of the motor structure in strength, heat dissipation, cost and assembly, etc.; The magnetic distribution of the magnetic rod 862 and the magnetic patch 952 is SNS alternately arranged, which makes the heat in the inner cavity of the casting shell 1 be blocked and accumulated in the part near the cylindrical heat dissipation bin 15 in the inner cavity of the casting shell 1 through magnetic field eddy current, when the blade 95 is driven by the rotor module 92 to suck in external cooling gas, the magnetic field of the magnetic rod 862 can guide the cooling air flow to flow along a certain path to directly take away the heat in the inner cavity of the casting shell 1 through the gap between the rectangular phase change microcapsules 16, in the process of heat dissipation through cooling gas, in order to prevent excessive heat conduction to the casting shell 1, the rectangular phase change microcapsules 16 inside the cylindrical heat dissipation bin 15 will absorb the heat absorbed by the cylindrical heat dissipation bin 15, so as to realize the mutual assistance of multi-stage cooling mechanism in the motor, prolonging the time of continuous heat dissipation in the motor; After the cooling gas enters the inner cavity of the casting shell 1, the heat gas is driven by the cooling gas to be discharged outward from the vicinity of the heat dissipation rib hole 14, which makes part of the heat gas be continuously impacted on the side shell disc 8 part by the circulating cooling gas. The side shell disc 8 part is provided with bearing two 82. In order to avoid the overheating of the bearing two 82 area to cause the heat loss of the rotor module 92 to increase, the side shell disc 8 part is provided with an embedded groove 84 and a strip-shaped groove 87. The ring-shaped chuck 86 is installed in the embedded groove 84 and the strip-shaped groove 87. The strip-shaped phase change microcapsule 864 is installed on the surface of the ring-shaped chuck 86 through the chuck groove 861. The gap between the strip-shaped phase change microcapsules 864 can be used as a gas discharge channel. At the same time, the strip-shaped phase change microcapsules 864 are installed on the surface of the strip-shaped frame 863, and the strip-shaped frames 863 are arranged in a ring shape, so that multiple groups of strip-shaped phase change microcapsules 864 can form a cladding heat dissipation interval from the outside of the bearing two 82 area. When the gas passes through the heat absorption mesh cover 85, part of the heat is conducted to the heat absorption mesh cover 85. The heat absorption mesh cover 85 absorbs heat and conducts it to the ring-shaped chuck 86 for concentrated heat dissipation, thereby reducing the overheating of the bearing two 82 area and avoiding the load temperature of the motor rotor part to be too high, ensuring the long-term use of the motor.

[0049] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0050] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A motor having a cast housing and a stamped end cover, comprising a cast housing (1) and a stamped end cover (7), characterized in that: The inner wall of the casting shell (1) is provided with topologically optimized heat dissipation ribs (11), and the inner wall of the casting shell (1) is provided with a phase change material coating (12), the topologically optimized heat dissipation ribs (11) are embedded with copper-graphene heat pipes, and the outer surface of the casting shell (1) is provided with a shell heat dissipation ring (2); The stamped end cover (7) has an acoustic metamaterial pit array (71) and a piezoelectric fiber sheet (78); a magnetic sealing interface (79) is provided on the edge of the stamped end cover (7); the casting shell (1) and the stamped end cover (7) are assembled by bolt locking; the stamped end cover (7) is a gradient composite structure, which is composed of a galvanized steel layer, a damping rubber layer, and an aluminum foil layer in sequence, and is composite-formed by rolling.

2. A motor having a cast housing and stamped end covers according to claim 1, characterized in that: The inner cavity of the casting shell (1) is provided with a sealing coating (13) near the stamped end cover (7), and the inner cavity of the casting shell (1) is provided with a heat dissipation rib hole (14) on the side away from the sealing coating (13); the casting shell (1) is provided with a side shell disk (8) on the side away from the stamped end cover (7), the center area of ​​the surface of the side shell disk (8) is provided with a bearing frame 2 (81), the inner cavity of the bearing frame 2 (81) is provided with a bearing 2 (82), a stator module (91) is provided between the bearing frame 2 (81) and the stamped end cover (7), a commutator (9) is provided on the outer side of the stamped end cover (7), a rotor module (92) is provided on the surface of the stator module (91), one end of the rotor module (92) passes through the inner cavity of the bearing frame 2 (81) and the bearing 2 (82), and one end of the rotor module (92) is fixed to the rotating end of the bearing 2 (82); One end of the rotor module (92) is sleeved with a blade (95), one end of the rotor module (92) is installed with a lock ring (94), one side of the surface of the stator module (91) is installed with a counterweight ring (93), the outer surface of the second bearing (82) is annularly installed with a heat insulation rib block (83), the outside of the blade (95) is installed with a special-shaped outer ring (951), and the surface of the special-shaped outer ring (951) is installed with a magnetic patch (952).

3. A motor having a cast housing and stamped end covers according to claim 2, characterized in that: The surface of the side shell disk (8) is also provided with a magnetic field heat eddy current guide unit, and the magnetic field heat eddy current guide unit includes an annular chuck (86). The surface of the side shell disk (8) is provided with an embedded groove (84), and a strip groove (87) is further provided inside the embedded groove (84). A heat conduction groove (88) is provided through the bottom of the strip groove (87). The annular chuck (86) is installed inside the embedded groove (84) and the strip groove (87). The surface of the annular chuck (86) is provided with a chuck groove (861), and a magnetic rod (862) is installed inside the chuck groove (861).

4. A motor having a cast housing and stamped end covers according to claim 3, characterized in that: The magnetic field heat eddy current guiding unit also includes a strip frame (863), which is embedded in one side of the annular chuck (86), and strip phase change microcapsules (864) are embedded in the surface of the strip frame (863), and gaps are provided between adjacent strip phase change microcapsules (864). The installation area of ​​the strip phase change microcapsules (864) is connected to the chuck groove (861), and a columnar heat dissipation bin (15) is installed inside the heat dissipation rib hole (14), and rectangular phase change microcapsules (16) are embedded in the columnar heat dissipation bin (15) at equal intervals, and the interior of the columnar heat dissipation bin (15) is through-set.

5. The motor having a cast housing and stamped end covers according to claim 2, characterized in that: The magnetic flux density of the magnetic sealing interface (79) is 1.0T, the topologically optimized heat dissipation ribs (11) are in a fractal branch structure, the spacing between multiple groups of the topologically optimized heat dissipation ribs (11) is 1 / 12 of the shell diameter, the piezoelectric fiber sheet (78) is set to PZT-5H material, the surface of the stamped end cover (7) is provided with an end cover hole 1 (74) and an end cover hole 2 (75), and the inner surface of the stamped end cover (7) is provided with an annular rib groove 1 (72) and an annular rib groove 2 (73).

6. The motor having a cast housing and stamped end covers according to claim 2, characterized in that: The surface of the casting shell (1) is provided with a mounting seat (5), the mounting seat (5) is symmetrically arranged in two groups, a cross frame (51) is installed between adjacent mounting seats (5), the bottom of the cross frame (51) is arranged in an arc shape, the cross frame (51) is fitted to the surface of the casting shell (1), and a mounting ear (52) is installed on the top of the mounting seat (5).

7. The motor having a cast housing and stamped end covers according to claim 1, characterized in that: The cast shell (1) contains 8 vol% of chopped carbon fiber reinforced aluminum alloy.

8. The motor having a cast housing and stamped end covers according to claim 1, characterized in that: The Helmholtz resonance frequency of the acoustic metamaterial pit array (71) is 2000±100 Hz, and the pit depth to diameter ratio is 0.

53.

9. The motor having a cast housing and stamped end covers according to claim 6, characterized in that: A heat dissipation cover (3) is installed on the outer surface of the side shell plate (8), and a heat conduction pad (4) is provided on the surface of the heat dissipation cover (3).

10. The motor having a cast housing and stamped end covers according to claim 9, characterized in that: The surface of the heat dissipation guide cover (3) is provided with a second mounting seat (6), the surface of the second mounting seat (6) is provided with a first positioning hole (61) and a second positioning hole (62), the surface of the mounting ear (52) is provided with a mounting groove (53), a side hole (54) is provided through one side of the mounting groove (53), the inner side of the mounting groove (53) is provided with a mounting hole (56), and the inner side of the mounting hole (56) is provided with a locking plate (55).

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