Motor

Abstract

A motor disclosed by the present invention comprises a base, a stator assembly, a rotor assembly and a heat dissipation assembly, the base is internally provided with a first cavity, a second cavity and a ventilation duct, the second cavity and the ventilation duct are both located at the outer side of the first cavity, the first cavity is communicated with the second cavity, and the first cavity and the second cavity are both isolated from the ventilation duct; the stator assembly is installed in the first cavity. The rotor assembly is rotationally connected with the base and is in clearance fit with the stator assembly; the heat dissipation assembly comprises a heat dissipation piece, a first blowing part and a second blowing part, the heat dissipation piece is installed in the ventilation channel, the first blowing part is installed on the machine base, one side of the ventilation channel is communicated with the external environment of the machine base in the first direction, the other side of the ventilation channel is communicated with the first blowing part, and the second blowing part is connected with the rotor assembly and located in the first cavity. The problems that the heat dissipation effect of the motor is poor, and the ventilation and heat dissipation capacity is bottleneck are solved.

Description

Technical Field

[0001] The present application relates to the technical field of power equipment, and in particular to a motor. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction. The main function of a motor is to generate driving torque. As a power source for electrical appliances or various machines, it is widely used in industry, commerce, and household appliances. Therefore, the motor will generate a lot of heat during long-term operation. If this heat is not dissipated in time, it will have a serious impact on the service life of the motor. Although the current compact motor has a compact structure, the heat dissipation effect is poor and there is a bottleneck in ventilation and heat dissipation capacity. Summary of the invention

[0003] The main purpose of the present application is to provide a motor to solve the problems of poor heat dissipation effect of the motor and bottlenecks in ventilation and heat dissipation capacity in the background technology.

[0004] According to one aspect of the present application, there is provided a motor, comprising:

[0005] A base, wherein a first cavity, a second cavity and a ventilation duct are disposed in the base, the second cavity and the ventilation duct are both located outside the first cavity, the first cavity is communicated with the second cavity, and the first cavity and the second cavity are both isolated from the ventilation duct;

[0006] A stator assembly, the stator assembly being installed in the first cavity;

[0007] A rotor assembly, the rotor assembly is rotatably connected to the base and is clearance-matched with the stator assembly;

[0008] A heat dissipation assembly, the heat dissipation assembly includes a heat sink, a first blowing component and a second blowing component, the heat sink is installed in the ventilation duct, the first blowing component is installed on the machine base, along a first direction, one side of the ventilation duct is connected to the external environment of the machine base and the other side is connected to the first blowing component, the second blowing component is connected to the rotor assembly and is located in the first cavity.

[0009] Furthermore, the base comprises:

[0010] a housing, wherein the first cavity is disposed in the housing;

[0011] The mounting assembly is connected to the outer wall of the shell and is arranged with the outer wall of the shell to form the second cavity and the ventilation duct. The heat sink is protruded from the outer wall of the shell away from the first cavity and is located in the ventilation duct.

[0012] Further, the heat sink comprises a plurality of heat dissipation ribs, the length of the heat dissipation ribs extending along a first direction, and the mounting assembly comprises:

[0013] A first windshield, wherein the first windshield includes at least two windshields, and along the rotation direction of the rotor assembly, at least two first windshields are installed on the housing at intervals;

[0014] A cover body, wherein the cover body is covered and arranged on a side of at least two of the first wind shields away from the shell, the first space enclosed by the cover body, at least two adjacent first wind shields and the shell serves as the ventilation duct, the second cavity is located on at least one side of the ventilation duct along the rotation direction of the rotor assembly, and along the rotation direction of the rotor assembly, a plurality of heat dissipation ribs are arranged at intervals in the ventilation duct.

[0015] Furthermore, the first blowing component is installed on one side of the housing along the first direction, and the heat dissipation assembly further includes:

[0016] A heat dissipation pipe is provided through the second cavity and the ventilation duct, and one end of the heat dissipation pipe close to the first blowing component is connected to the first blowing component.

[0017] Furthermore, the heat dissipation pipe comprises:

[0018] A first heat dissipation tube, wherein the first heat dissipation tube comprises a plurality of first heat dissipation tubes, the plurality of first heat dissipation tubes are arranged at intervals and penetrate the ventilation duct, at least one first heat dissipation tube is located between two adjacent heat dissipation ribs, and / or at least one first heat dissipation tube is located between the heat dissipation ribs and the first wind shield; and / or there are a plurality of first heat dissipation tubes between two adjacent heat dissipation ribs, and the plurality of first heat dissipation tubes are arranged in sequence at intervals in a direction away from the shell.

[0019] Furthermore, the installation component also includes:

[0020] A first end plate, the first end plate is installed on a side of the housing away from the first blowing component along a first direction and covers an opening enclosed by the cover body and the first wind shield plate;

[0021] A second end plate, the second end plate is mounted on a side of the housing close to the first blowing component along the first direction and covers an opening enclosed by the cover body and the first wind shield plate;

[0022] The first end plate and the second end plate are both provided with a plurality of first mounting holes and a plurality of first ventilation holes at intervals, the plurality of heat dissipation pipes are provided in one-to-one correspondence with the plurality of first mounting holes, and opposite sides of the heat dissipation pipes penetrate the first mounting holes and are connected to the first end plate and the second end plate;

[0023] The plurality of first ventilation holes are arranged in one-to-one correspondence with the plurality of heat dissipation ribs. The first ventilation holes of the first end plate are connected to the external environment of the base, and the first ventilation holes of the second end plate are connected to the first blowing component.

[0024] Further, along the first direction, the heat dissipation rib and at least one of the first end plate and the second end plate have a first installation gap; and / or, the installation assembly further includes:

[0025] A sealing member is embedded in a gap between the first mounting hole and the heat dissipation pipe.

[0026] Furthermore, the rotor assembly comprises a rotor core and a rotating shaft, the rotor core is sleeved on the rotating shaft, and the housing comprises:

[0027] A mounting cylinder, wherein the stator assembly is mounted in the mounting cylinder, and the first end plate and the second end plate are sleeved on an outer side wall of the mounting cylinder;

[0028] a first end cover, the first end cover covers the mounting tube and is located on a side of the first end plate away from the second end plate;

[0029] a second end cover, the second end cover covers the installation cylinder and is located on a side of the second end plate away from the first end plate, the installation cylinder, the first end cover and the second end cover enclose the first cavity, the rotating shaft is rotatably connected with the first end cover and the second end cover and enables the rotor core to be clearance-matched with the stator assembly;

[0030] Along the first direction, there is a second installation gap between the first end cover and the first end plate, and between the second end cover and the second end plate. The second installation gap between the first end cover and the first end plate is connected to the external environment of the machine base, and the second installation gap between the second end cover and the second end plate is connected to the first blowing component. Along the radial direction of the rotating shaft, the side of the first end cover away from the rotating shaft protrudes from the outer wall of the mounting tube and is detachably connected to the first end plate, and the side of the second end cover away from the rotating shaft protrudes from the outer wall of the mounting tube and is detachably connected to the second end plate.

[0031] Furthermore, the first end cover and the second end cover are both provided with a plurality of through holes and a plurality of second ventilation holes, the plurality of through holes are provided in a one-to-one correspondence with the plurality of first mounting holes, the through holes on the first end cover are connected with the heat dissipation pipe and the external environment of the machine base, the through holes on the second end cover are connected with the first blowing component and the heat dissipation pipe, the plurality of second ventilation holes are provided in a one-to-one correspondence with the plurality of first ventilation holes, and the first blowing component is connected with the second ventilation holes on the second end cover.

[0032] Further, opposite ends of the rotating shaft extend outside the first cavity, and the first blowing component includes:

[0033] An air guide cover, wherein the air guide cover is installed on a side of the base close to the second end cover and covers the second installation gap between the second end cover and the second end plate, an air guide channel is provided in the air guide cover, the second ventilation hole and the through hole on the second end cover are both connected to the air guide channel and the second installation gap, and one end of the rotating shaft close to the air guide cover is located in the air guide channel;

[0034] A first fan is located in the air guiding channel and connected to the rotating shaft.

[0035] Furthermore, the cover body is further surrounded by at least two adjacent first windshield plates and the shell to form a second space, and along the rotation direction of the rotor assembly, the second space is located on at least one side of the ventilation duct, and a first opening and a second opening are provided on a side wall of the shell close to the second cavity, and the mounting assembly further includes:

[0036] The second wind shield comprises at least two pieces, at least two of the second wind shields are installed on the shell at intervals along the first direction and are located in the second space, the inner side wall of the second space and the at least two second wind shields enclose the second cavity, wherein the first opening and the second opening are arranged at intervals along the first direction and are respectively connected to the second cavity.

[0037] Furthermore, the second wind shield is provided with a plurality of third mounting holes at intervals, and the heat dissipation pipe further comprises:

[0038] The second heat dissipation tube includes a plurality of second heat dissipation tubes, the plurality of second heat dissipation tubes penetrate the second cavity, and the plurality of second heat dissipation tubes are arranged one-to-one correspondingly to the plurality of third mounting holes and penetrate the third mounting holes to be connected with the second wind shield.

[0039] Furthermore, the installation component also includes:

[0040] A support member, wherein at least one of the ventilation duct and the second cavity is provided with the support member, and the support member is used to support the heat dissipation pipe; and / or,

[0041] A third installation gap is provided between the side of the heat dissipation rib away from the shell and the inner side wall of the cover body. The height of the heat dissipation rib protruding from the outer side wall of the shell is H, and the third installation gap is not greater than 10%H.

[0042] Furthermore, a guide groove is provided on the heat dissipation rib, and the guide groove extends from one end of the heat dissipation rib to the other end along a first direction, and / or the guide groove includes at least two, and along the rotation direction of the rotor assembly, at least two of the guide grooves are respectively located on opposite sides of the heat dissipation rib, and the guide grooves on opposite sides of the heat dissipation rib are staggered in a direction away from the shell.

[0043] Furthermore, a receiving cavity is provided in a wall plate of at least one of the ventilation duct and the second cavity, and the heat dissipation assembly further comprises:

[0044] A phase-change heat absorber is installed in the accommodating cavity.

[0045] In the present application, the second cavity provided in the motor base is connected to the first cavity. When the stator assembly and the rotor assembly are working, the heat generated by the stator assembly and the rotor assembly can flow into the second cavity to transfer the heat through the wall plate of the second cavity and release it into the air around the base. The heat in the base can also be transferred to the heat sink in the ventilation duct outside the base. The first blowing component blows the heat to the heat sink to the external environment, thereby taking away the heat from the heat sink conducted from the inside of the motor base. At the same time, since the heat sink is located in the ventilation duct, in the process of introducing the wind blown out by the first blowing component to the heat sink through the ventilation duct, the ventilation duct can ensure the constancy of the air volume blown to each part of the heat sink along the first direction, so that the wind blown by the first blowing component to the heat sink will not be lost along the first direction, thereby improving the strength and uniformity of the wind force received by each part of the heat sink, thereby improving the heat exchange efficiency of the motor, and providing physical guarantee for the capacity expansion of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0047] Figure 1 A schematic diagram of the structure of a motor provided by an embodiment of the present invention;

[0048] Figure 2 for Figure 1 An end view of

[0049] Figure 3 for Figure 1 Detailed schematic diagram of the Y1 section;

[0050] Figure 4 for Figure 1 Detailed schematic diagram of the Y2 section;

[0051] Figure 5 for Figure 2 Detailed schematic diagram of the Y3 part;

[0052] Figure 6 for Figure 2 Schematic diagram of the lower machine base in AA section view;

[0053] Figure 7 for Figure 6 The enlarged schematic diagram of the D part;

[0054] Figure 8 for Figure 6 End view of the middle machine base;

[0055] Fig. 9 It is a schematic diagram of the assembly between the heat dissipation ribs and the second blowing component in the lower machine base in the BB section;

[0056] Fig.10 is a schematic structural diagram of a first end plate or a second end plate;

[0057] Fig.11 is a schematic diagram of the structure of the first end cover or the second end cover;

[0058] Fig.12 is a schematic structural diagram of a second windshield;

[0059] Fig.13 is a schematic diagram of the structure of the support plate;

[0060] Fig.14 This is an end view of the heat dissipation rib.

[0061] The above drawings include the following reference numerals:

[0062] 10. base; 101. first cavity; 1011. first heat dissipation space; 1012. second heat dissipation space; 102. second cavity; 103. ventilation duct; 11. shell; 111. mounting tube; 112. first end cover; 113. second end cover; 131. through hole; 132. second ventilation hole; 114. second mounting gap; 115. first opening; 116. second opening; 12. mounting assembly; 121. first windshield; 122. cover; 123. first end plate; 124. second end plate; 241. first mounting hole; 242. first ventilation hole; 243. connecting hole; 125. second windshield; 251. third mounting hole; 126. Support plate; 261. Fourth mounting hole; 262. Avoidance hole; 20. Stator assembly; 21. Stator core; 22. Coil winding; 30. Rotor assembly; 31. Rotor core; 311. Axial ventilation hole; 32. Rotating shaft; 40. Heat dissipation assembly; 41. Heat dissipation ribs; 410. Guide groove; 411. First mounting gap; 412. Third mounting gap; 42. First blowing component; 421. Wind guide cover; 211. Wind guide channel; 422. First fan; 43. Heat dissipation pipe; 431. First heat dissipation pipe; 432. Second heat dissipation pipe; 44. Second blowing component; 441. Wind guide duct; 442. Second fan; 50. Main junction box. DETAILED DESCRIPTION

[0063] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0065] Existing compact motors (such as motors with IC411 cooling method, which dissipate heat on the surface of a fully enclosed housing, and have internal and external fans to provide internal and external air paths for cooling and heat dissipation) have inherent deficiencies in ventilation and heat dissipation capabilities, and their power upshift and capacity increase capabilities cannot be compared with air-to-air cooling motors. The cooling measures for the windings that generate higher temperatures are very limited, the heat exchange efficiency is limited, and there is a bottleneck in ventilation and heat dissipation capabilities.

[0066] In this regard, in order to break through the technical bottleneck of the heat dissipation capacity of the motor, the inventor of the present invention has found through in-depth research that although an inner air path and an outer air path are set on the motor to dissipate heat for the motor at the same time, the heat dissipation capacity is still limited. For example, the heat generated by the internal circulation of the motor is taken away by one or more ventilation boxes (such as four ventilation boxes) evenly distributed along the circumference of the motor base 10, but the inner wall area of ​​the ventilation box is limited, the heat conduction efficiency is limited, and there is a bottleneck in the ventilation and heat dissipation capacity. The heat dissipation of the external air path is mainly achieved by distributing heat dissipation ribs 41 on the outside of the motor base 10, and exchanging heat through the cooling air flowing between the heat dissipation ribs 41 and the heat dissipation ribs 41, so as to take away the heat from the heat conduction of the heat dissipation ribs 41 from the inside of the motor base 10. At this time, since the heat dissipation ribs 41 are located in the open space outside the base 10, and since the heat dissipation ribs 41 are open and scattered, the cooling wind will blow toward the heat dissipation ribs 41 along the axial direction of the motor shaft 32 (the axial direction is the first direction mentioned below in this embodiment, i.e. Figure 1 The cooling wind is lost all the way (in the direction indicated by the arrow X in the middle), and the smaller the radial height of the heat dissipation rib 41 is, the greater the loss of cooling wind is, resulting in a gradual decrease in the air volume and wind force blown to the side of the heat dissipation rib 41 away from the air inlet, which greatly limits the heat exchange efficiency.

[0067] In order to solve the problem of poor motor heat dissipation and ventilation and heat dissipation capacity bottleneck, please refer to Figures 1 to 13 , an embodiment of the present invention provides a motor, such as Figure 1 As shown, the motor includes a base 10, a stator assembly 20, a rotor assembly 30 and a heat dissipation assembly 40. A first cavity 101, a second cavity 102 and a ventilation duct 103 are provided in the base 10. The second cavity 102 and the ventilation duct 103 are both located outside the first cavity 101, the first cavity 101 is connected to the second cavity 102, and the first cavity 101 and the second cavity 102 are isolated from the ventilation duct 103. The stator assembly 20 is installed in the first cavity 101. The rotor assembly 30 is rotatably connected to the base 10 and is clearance-matched with the stator assembly 20, as shown in FIG. Figure 1 and Figure 3 to Figure 4As shown, the gap between the rotor assembly 30 and the stator assembly 20 is shown as the symbol g. The heat dissipation assembly 40 includes a heat sink, a first blowing component 42 and a second blowing component 44. The heat sink is installed in the ventilation duct 103, and the first blowing component 42 is installed on the base 10. Along the first direction, one side of the ventilation duct 103 is connected to the external environment of the base 10 and the other side is connected to the first blowing component 42. The first blowing component 42 is at least used to blow air into the ventilation duct 103. The heat inside the motor base 10 can be conducted along the base 10 to the heat sink. In the process of the first blowing component 42 blowing air to the heat sink, the heat on the heat sink will be blown to the external environment of the base 10 by the cooling air. Moreover, in the process of the first blowing component 42 blowing air to the heat sink in the ventilation duct 103, the cooling air will not generate energy loss along the first direction. The ventilation duct 103 can ensure that the air volume blown by the first blowing component 42 to each part of the heat sink is constant (i.e. Figure 1 The air volume of the external air path indicated by the serial number ② along the first direction is constant), thereby improving the heat exchange effect and efficiency of the heat sink.

[0068] In addition to blowing air toward the heat sink in the ventilation duct 103 through the first blowing component 42 to dissipate heat from the motor, since the second cavity 102 is connected to the first cavity 101, the heat generated by the stator assembly 20 and the rotor assembly 30 in the first cavity 101 can flow into the second cavity 102, so as to dissipate the heat inside the motor to the external environment of the base 10 through the wall panels of the second cavity 102, thereby improving the heat dissipation effect of the motor.

[0069] In order to ensure that the heat in the first cavity 101 can be efficiently transferred to the second cavity 102 for heat dissipation, the second blowing component 44 of the heat dissipation assembly 40 is connected to the rotor assembly 30 and is located in the first cavity 101, so that the hot air flow in the first cavity 101 can be blown to the second cavity 102 for cooling through the second blowing component 44, and the cooled air flow returns from the second cavity 102 to the first cavity 101.

[0070] like Figure 3 to Figure 4 as well as Fig. 9As shown, the stator assembly 20 and the rotor assembly 30 divide the first cavity 101 into a first heat dissipation space 1011 and a second heat dissipation space 1012. The first heat dissipation space 1011 and the second heat dissipation space 1012 are respectively located on opposite sides of the stator assembly 20 along the first direction, and the first heat dissipation space 1011 and the second heat dissipation space 1012 are respectively connected to the second cavity 102. The second blowing component 44 is located in the second heat dissipation space 1012. After the second blowing component 44 blows the hot air flow to the second cavity 102 for cooling, the cooled air flow enters the first heat dissipation space 1011, and then enters the second heat dissipation space 1012 from the first heat dissipation space 1011 along the gap g between the stator assembly 20 and the rotor assembly 30, and then the second blowing component 44 blows the air flow carrying heat to the second cavity 102 again, and the cycle repeats, through the internal wind path (i.e., the internal wind path) between the first cavity 101 and the second cavity 102. Figure 1 The air path indicated by number ① in the figure is used to cool the inside of the motor.

[0071] The stator assembly 20 in this embodiment includes a stator core 21 and a coil winding 22. The stator core 21 is installed in the first cavity 101, and the coil winding 22 is arranged in the stator core 21. The rotor assembly 30 includes a rotor core 31 and a rotating shaft 32, and the rotating shaft 32 is arranged through the base 10 and is rotatably connected to the base 10. The rotor core 31 is sleeved on the rotating shaft 32 and is gap-matched with the stator core 21 so that the rotor core 31 can rotate relative to the stator core 21. And an axial ventilation hole 311 (such as Figure 1 as well as Figure 3 and Figure 4 As shown in the figure, the cooling airflow entering the first heat dissipation space 1011 not only enters the second heat dissipation space 1012 from the gap g between the rotor core 31 and the stator core 21 for heat dissipation, but also enters the second heat dissipation space 1012 from the axial ventilation holes 311 in the rotor core 31, and then blows the hot air flow toward the second cavity 102 for heat dissipation through the second blowing component 44.

[0072] See also Figure 1 as well as Figure 3 to Figure 4, the side wall of the housing 11 of the base 10 near the second cavity 102 is provided with a first opening 115 and a second opening 116 spaced apart in the first direction. The first opening 115 connects the second cavity 102 and the first heat dissipation space 1011, and the second opening 116 connects the second cavity 102 and the second heat dissipation space 1012, so that the second blowing component 44 can blow the hot air flow in the first cavity 101 into the second cavity 102 along the second opening 116, and the air flow cooled by the second cavity 102 enters the first heat dissipation space 1011 from the first opening 115 to realize the circulation of the heat dissipation air flow in the inner air path. Specifically, the second blowing component 44 in this embodiment includes an air guide duct 441 and a second fan 442. The air guide duct 441 is installed on the rotating shaft 32, one end of the air guide duct 441 is connected to the axial ventilation hole 311 and the gap between the stator core 21 and the rotor core 31, and the other end extends to a position close to the second opening 116, so as to efficiently transmit the hot air flow to the second cavity 102 along the second opening 116. The second fan 442 is installed in the air guide duct 441, and the second fan 442 is used to disturb the air flow to generate wind force so as to efficiently guide the hot air flow into the second cavity 102 through the air guide duct 441. As a result, the second fan 442 blows the heat generated by the stator assembly 20 and the rotor assembly 30 from the second heat dissipation space 1012 to the second cavity 102, so as to dissipate the heat carried by the air flow to the outside of the base 10 through the second cavity 102. The airflow cooled by the second cavity 102 enters the first heat dissipation space 1011 along the first opening 115, and circulates to the second heat dissipation space 1012 from the axial ventilation hole 311 and the matching gap between the stator assembly 20 and the rotor assembly 30, and then the second fan 442 continues to blow the airflow with increased temperature to the second cavity 102 for cooling. This cycle is repeated to achieve the heat generated by the stator assembly 20 and the rotor assembly 30 in the first cavity 101 of the motor is introduced into the second cavity 102, and then the heat is conducted by the wall plate of the second cavity 102 and released to the air around the base 10.

[0073] As can be seen from the above, the present embodiment can dissipate the heat inside the motor to the external environment of the motor through the second cavity 102. At the same time, the first blowing component 42 is used to blow air to the heat sink in the ventilation duct 103 to conduct the heat of the motor to the heat sink and blow it to the external environment. Since the ventilation duct 103 can prevent the wind blown by the first blowing component 42 from being dissipated along the first direction, the constancy of the air volume received by each part of the heat sink is ensured, so that the heat exchange efficiency of the motor is higher and the heat dissipation effect is better.

[0074] It can be seen that in this embodiment, the second cavity 102 provided in the motor base 10 is connected to the first cavity 101. When the stator assembly 20 and the rotor assembly 30 are working, the heat generated by the stator assembly 20 and the rotor assembly 30 can flow through the second cavity 102, so as to conduct the heat through the wall plate of the second cavity 102 and release it to the air around the base 10. The heat in the base 10 can also be conducted to the heat sink in the outer ventilation duct 103 thereof, and the first blowing component 42 blows air to the heat sink to blow the heat to the external environment, thereby taking away the heat from the heat sink conducted from the inside of the motor base 10. At the same time, since the heat sink is located in the ventilation duct 103, in the process of guiding the wind blown out by the first blowing component 42 to the heat sink through the ventilation duct 103, the ventilation duct 103 can ensure the constancy of the wind volume blown to each part of the heat sink along the first direction, so that the wind blown to the heat sink by the first blowing component 42 will not be lost along the first direction, thereby improving the intensity and uniformity of the wind force received by each part of the heat sink, thereby improving the heat exchange efficiency of the motor, and providing physical guarantee for the capacity expansion of the motor.

[0075] See also Figures 2 to 13 The base 10 in this embodiment includes a shell 11 and a mounting assembly 12, and a first cavity 101 is arranged in the shell 11. The mounting assembly 12 is connected to the outer wall of the shell 11 and is surrounded by the outer wall of the shell 11 to form a second cavity 102 and a ventilation duct 103. The heat sink is convexly arranged on the outer wall of the shell 11 away from the first cavity 101 and is located in the ventilation duct 103. Therefore, after the heat sink is arranged on the outer wall of the shell 11, the mounting assembly 12 can be installed on the shell 11 to obtain the corresponding second cavity 102 and ventilation duct 103, and the ventilation duct 103 can cover the heat sink, so that the heat sink will not be exposed to the external environment of the base 10, and the assembly is convenient. And the heat sink can evenly conduct the airflow blown to the heat sink by the first blowing component 42 to each part of the heat sink through the ventilation duct 103, so that the air volume received by each part of the heat sink is balanced, thereby improving the heat dissipation efficiency and effect of the heat sink.

[0076] In some embodiments, the heat sink may be a plurality of heat dissipation protrusions, the plurality of heat dissipation protrusions are arranged in a plurality of rows along the first direction, and the plurality of rows of heat dissipation protrusions are sequentially arranged at intervals along the rotation direction of the rotating shaft 32 (or the rotor assembly 30). However, in order to improve the processing convenience of the base 10, preferably, as Figure 2 and Fig. 9 As shown, the heat sink includes a plurality of heat dissipation ribs 41 . The length of the heat dissipation ribs 41 extends along a first direction. The heat dissipation ribs 41 can extend from one end of the housing 11 to the other end along the first direction.

[0077] See also Figure 2 as well as Figure 8The mounting assembly 12 includes a first windshield 121 and a cover 122. The first windshield 121 includes at least two pieces, and along the rotation direction of the rotor assembly 30 (the direction is the circumferential direction of the rotating shaft 32), at least two first windshields 121 are installed on the housing 11 at intervals. The cover 122 is arranged to cover the side of the at least two first windshields 121 away from the housing 11. The first space enclosed by the cover 122, at least two adjacent first windshields 121 and the housing 11 serves as a ventilation duct 103, and the second cavity 102 is located on at least one side of the ventilation duct 103 along the rotation direction of the rotor assembly 30. Along the rotation direction of the rotor assembly 30, a plurality of heat dissipation ribs 41 are arranged in the ventilation duct 103 at intervals. Therefore, in this embodiment, the wind blown by the first blowing component 42 toward the heat dissipation ribs 41 is limited to the wedge-shaped space between two adjacent heat dissipation ribs 41 and between the heat dissipation ribs 41 and the first wind shield 121 through the first wind shield 121 and the cover body 122, so that the wind will not be lost along the way, thereby ensuring the constant wind volume of each part in the length direction of the plurality of heat dissipation ribs 41, improving the heat exchange efficiency of the plurality of heat dissipation ribs 41, and further improving the heat dissipation efficiency and heat dissipation effect of the motor. Moreover, in this embodiment, after the first wind shield 121 is installed on the housing 11, the first wind shield 121 is covered by the cover body 122 to obtain the corresponding ventilation duct 103, which is efficient and convenient to assemble and can improve the production efficiency of the motor.

[0078] The first blowing component 42 is installed on one side of the housing 11 along the first direction. In order to increase the heat exchange area and heat exchange capacity when the heat dissipation component 40 dissipates heat for the motor, the heat dissipation treatment measures for the motor to cope with high-temperature working conditions are increased, so as to make the heat dissipation capacity of the motor provided in this embodiment better. In this regard, the heat dissipation component 40 in this embodiment also includes a heat dissipation pipe 43. In this embodiment, the heat dissipation pipe 43 can be provided in at least one of the second cavity 102 and the ventilation duct 103, and preferably the second cavity 102 and the ventilation duct 103 are both provided with a heat dissipation pipe 43. And the end of the heat dissipation pipe 43 close to the first blowing component 42 is connected to the first blowing component 42, so that the wind blown out of the blowing part can enter the heat dissipation pipe 43, and the heat generated by the motor is taken away by the wind flowing in the heat dissipation pipe 43. The shape of the cross section of the heat dissipation pipe 43 can be one of a circle, a square, a regular polygon, etc., and the shape of the heat dissipation pipe 43 is specifically selected based on the principle that the motor can obtain a larger heat exchange area.

[0079] Specifically, Figure 3 and Figure 4 As shown, when the heat dissipation pipe 43 is arranged in the second cavity 102, the motor dissipates heat through the internal circulation air path (i.e., internal air path ①) circulating between the first cavity 101 and the second cavity 102 in the following two ways:

[0080] 11): A portion of the heat in the second cavity 102 from the first cavity 101 is thermally conducted through the wall panels of the second cavity 102 and released into the air around the base 10 .

[0081] 12): A heat dissipation pipe 43 is added to the sealed second cavity 102. The hot air from the first cavity 101 is fully in contact with the heat dissipation pipe 43 during the process of entering and exiting the second cavity 102 for heat exchange. The heat is taken away by the cooling air blown into the heat dissipation pipe 43 through the first blowing component 42, and then discharged from the end of the heat dissipation pipe 43 away from the first blowing component 42 to the air around the base 10. Therefore, by setting the heat dissipation pipe 43 in the second cavity 102, the heat exchange channel of the motor internal circulation is increased, and the heat exchange area of ​​the motor when dissipating heat through the second cavity 102 is increased, that is, the heat exchange capacity and heat exchange efficiency of the internal air path are increased, which provides physical guarantee for the capacity expansion of the motor.

[0082] Secondly, in this embodiment, when the heat dissipation pipe 43 is arranged in the ventilation duct 103, Figure 8 and Fig. 9 As shown, the heat dissipation mode of the motor in this embodiment when the heat is dissipated through the external circulation air path (i.e., external air path ②) flowing through the heat dissipation ribs 41 includes the following three modes:

[0083] 21): The first blowing component 42 blows wind toward the heat dissipation ribs 41 and the wedge-shaped space between the heat dissipation ribs 41 and the heat dissipation ribs 41, and dissipates the heat from the base 10 on the heat dissipation ribs 41 to the external space.

[0084] 22): Through the ventilation duct 103 enclosed by the cover body 122 and the first wind shield 121, the cooling air blown by the first blowing component 42 to the heat dissipation ribs 41 is limited to the wedge-shaped space between two adjacent heat dissipation ribs 41 and between the heat dissipation ribs 41 and the first wind shield 121, so that the cooling air will not be lost along the way, thereby improving the heat exchange efficiency of the motor by ensuring the constancy of the air volume, providing physical guarantee for the capacity expansion of the motor.

[0085] 23): Another part of the wind blown out by the first blowing component 42 enters the heat dissipation pipe 43 located in the ventilation duct 103. The wind comes into close contact with the heat dissipation pipe 43 during the process of passing along the first direction. The cooling wind takes away the heat introduced from the inside of the motor by the heat dissipation ribs 41 and becomes hot air and is discharged to the external environment, thereby bringing the heat inside the motor back to the atmosphere. Compared with the heat exchange channel of the external circulation air path in which only the heat dissipation ribs 41 are used for heat dissipation, the heat dissipation pipe 43 is added in this embodiment, which can multiply the heat exchange area and heat exchange capacity of the motor within the limited space of the base 10, thereby effectively reducing the temperature rise inside the motor, ensuring the thermal stability and thermal safety of the internal organs of the motor, increasing the heat exchange area, heat exchange efficiency and heat exchange capacity, and providing physical guarantee for reducing the winding temperature rise of the motor, improving the power level of the motor, and increasing the capacity of the motor.

[0086] In the present embodiment, heat dissipation pipes 43 are preferably installed in both the second cavity 102 and the ventilation duct 103. Thus, when the motor dissipates heat through the inner air path and the outer air path, the heat dissipation methods will include the above-mentioned two heat dissipation methods in the inner air path and the above-mentioned three heat dissipation methods in the outer air path. The motor is cooled by a total of five heat dissipation methods in the inner air path and the outer air path, so that the heat exchange area and heat exchange capacity of the motor are further increased, the heat exchange efficiency is higher, and the heat dissipation effect is better.

[0087] In order to improve the heat dissipation effect of the ventilation duct 103 when dissipating heat to the motor through the heat dissipation pipe 43, the heat dissipation pipe 43 includes a first heat dissipation pipe 431, and the first heat dissipation pipe 431 includes a plurality of first heat dissipation pipes 431, which are arranged at intervals and penetrate the ventilation duct 103. At least one first heat dissipation pipe 431 is located between two adjacent heat dissipation ribs 41, so that the heat exchange area and heat exchange capacity of the heat dissipation component 40 when dissipating heat to the motor are increased through the first heat dissipation pipe 431 between the heat dissipation ribs 41. And / or, at least one first heat dissipation pipe 431 is located between the heat dissipation rib 41 and the first wind shield 121, so that the heat exchange area and heat exchange capacity of the heat dissipation component 40 when dissipating heat to the motor are increased through the first heat dissipation pipe 431 located between the heat dissipation rib 41 and the first wind shield 121. And / or, in this embodiment, there are multiple first heat dissipation tubes 431 between two adjacent heat dissipation ribs 41, and the multiple first heat dissipation tubes 431 are arranged in sequence and spaced apart along the direction away from the shell 11 (the direction is the radial direction of the rotating shaft 32). Therefore, since there are multiple first heat dissipation tubes 431 between two adjacent heat dissipation ribs 41, the heat exchange area of ​​the heat dissipation component 40 when dissipating heat for the motor is larger and the heat exchange capacity is higher.

[0088] like Figure 7 As shown, the mounting assembly 12 in this embodiment further includes a first end plate 123 and a second end plate 124. The first end plate 123 is mounted on a side of the housing 11 away from the first blowing component 42 along the first direction and covers an opening enclosed by the cover 122 and the first wind shield 121. The second end plate 124 is mounted on a side of the housing 11 close to the first blowing component 42 along the first direction and covers an opening enclosed by the cover 122 and the first wind shield 121.

[0089] like Fig.10As shown, the first end plate 123 and the second end plate 124 are both provided with a plurality of first mounting holes 241 and a plurality of first ventilation holes 242 at intervals. The plurality of heat dissipation pipes 43 are provided in a one-to-one correspondence with the plurality of first mounting holes 241, and the opposite sides of the heat dissipation pipes 43 are both connected to the first end plate 123 and the second end plate 124 through the first mounting holes 241, so that the heat dissipation pipes 43 are installed on the housing 11 and pass through the ventilation duct 103 and the second cavity 102 through the plurality of first mounting holes 241 provided on the first end plate 123 and the second end plate 124, thereby improving the connection stability and firmness between the heat dissipation pipes 43 and the base 10, and the assembly is efficient and convenient. The plurality of first ventilation holes 242 are provided in a one-to-one correspondence with the plurality of heat dissipation ribs 41, and the first ventilation holes 242 of the first end plate 123 are connected to the external environment of the base 10, so that the heat on the heat dissipation ribs 41 can be blown to the air of the external environment along the first ventilation holes 242 on the first end plate 123 by wind. The first ventilation holes 242 of the second end plate 124 are in communication with the first blowing component 42 , so that the wind blown out by the first blowing component 42 can enter the ventilation passage 103 along the first ventilation holes 242 of the second end plate 124 and blow toward the heat dissipation ribs 41 .

[0090] It can be seen that in this embodiment, the heat dissipation pipe 43 penetrating the ventilation duct 103 and the second cavity 102 is installed and fixed by the first end plate 123 and the second end plate 124 installed on the housing 11, thereby improving the connection stability and strength between the heat dissipation pipe 43 and the housing 11, and making the overall structure of the base 10 more stable and reliable. And by setting the first ventilation hole 242 on the second end plate 124, it is ensured that the wind blown out by the first blowing component 42 can be blown into the ventilation duct 103, and then the heat on the heat dissipation rib 41 in the ventilation duct 103 is blown to the external environment of the base 10 through the first ventilation hole 242 on the first end plate 123. At the same time, the first blowing component 42 also blows part of the wind to the heat dissipation pipe 43, so that the heat of the motor is dissipated to the external environment of the base 10 through the heat dissipation pipe 43 to further improve the heat dissipation effect of the motor.

[0091] Along the first direction, the heat dissipation rib 41 and at least one of the first end plate 123 and the second end plate 124 have a first installation gap 411 (eg Fig. 9 The first installation gap 411 between the heat dissipation rib 41 and the second end plate 124 can ensure that the wind detours between the heat dissipation ribs 41, improve the blowing efficiency when the wind enters the ventilation duct 103 along the first ventilation holes 242 on the second end plate 124, and thus improve the heat dissipation efficiency. The first installation gap 411 between the heat dissipation rib 41 and the first end plate 123 can improve the blowing efficiency of the hot air along the first ventilation holes 242 on the first end plate 123 to the external environment, so that the hot air flows to the external environment in a timely and rapid manner, thereby improving the heat dissipation efficiency.

[0092] In this embodiment, the mounting assembly 12 further includes a sealing member, which is embedded in the gap between the first mounting hole 241 and the heat dissipation tube 43, so that pollutants such as rainwater and dust in the external environment are not easy to enter the space enclosed by the cover body 122 and the first windshield plate 121, thereby improving the protection capability of the mounting assembly 12, thereby reducing the maintenance frequency of the motor and increasing the service life of the motor. The sealing member in this embodiment is a sealing ring, and can also be a sealing layer structure obtained by coating a sealant in the gap between the first mounting hole 241 and the heat dissipation tube 43. Here, this embodiment does not make a sole limitation on the specific structure of the sealing member.

[0093] The rotor assembly 30 in this embodiment includes a rotor core 31 and a rotating shaft 32. The rotor core 31 is sleeved on the rotating shaft 32. Fig. 9 As shown, the housing 11 includes a mounting cylinder 111, a first end cover 112, and a second end cover 113. The stator assembly 20 is mounted in the mounting cylinder 111, and the first end plate 123 and the second end plate 124 are sleeved on the outer wall of the mounting cylinder 111. The first end cover 112 covers the mounting cylinder 111 and is located on the side of the first end plate 123 away from the second end plate 124. The second end cover 113 covers the mounting cylinder 111 and is located on the side of the second end plate 124 away from the first end plate 123. The mounting cylinder 111, the first end cover 112, and the second end cover 113 enclose the first cavity 101. The rotating shaft 32 is rotatably connected to the first end cover 112 and the second end cover 113 and enables the rotor core 31 to be gap-matched with the stator assembly 20, so that the rotor core 31 can rotate relative to the stator assembly 20 driven by the rotating shaft 32, while the gap g between the rotor core 31 and the stator assembly 20 can be ventilated, and the incoming wind dissipates the heat generated by the two to the external environment through the second cavity 102.

[0094] Along the first direction, there is a second installation gap 114 (eg, Fig. 9As shown). Among them, the second installation gap 114 between the first end cover 112 and the first end plate 123 is connected to the external environment of the machine base 10, so that the hot air coming out of the first ventilation hole 242 of the first end plate 123 and the hot air coming out of the heat dissipation pipe 43 can be discharged to the external environment of the machine base 10 along the second installation gap 114. The second installation gap 114 between the second end cover 113 and the second end plate 124 is connected to the first blowing component 42, so that the first blowing component 42 can blow air to the ventilation duct 103, and blow air to the heat dissipation pipe 43 along the first ventilation hole 242 on the second end plate 124. Along the radial direction of the rotating shaft 32, the side of the first end cover 112 away from the rotating shaft 32 protrudes from the outer wall of the mounting tube 111 and is detachably connected to the first end plate 123, and the side of the second end cover 113 away from the rotating shaft 32 protrudes from the outer wall of the mounting tube 111 and is detachably connected to the second end plate 124. Specifically, as Fig.10 and Fig.11 As shown, corresponding connection holes 243 can be provided on the first end cover 112 and the first end plate 123, so that the two can be connected together by connecting members (such as bolts, screws, etc.) passing through the connection holes 243. Corresponding connection holes 243 are also provided on the second end cover 113 and the second end plate 124, so that the two can be connected together by connecting members (such as bolts, screws, etc.) passing through the connection holes 243, and both assembly and disassembly are simple and convenient.

[0095] Therefore, in this embodiment, before the housing 11 is assembled by the installation tube 111, the first end cover 112 and the second end cover 113, the first end plate 123 and the second end plate 124 can be sleeved on the opposite sides of the installation tube 111 along the first direction. When the first end cover 112 is installed and covers the installation tube 111, the part of the first end cover 112 protruding from the outer wall of the installation tube 111 is detachably connected to the first end plate 123, and when the second end cover 113 is installed and covers the installation tube 111, the part of the second end cover 113 protruding from the outer wall of the installation tube 111 is detachably connected to the second end plate 124, which is not only conducive to the convenient disassembly of the first end cover 112 and the second end cover 113 to perform maintenance and repair operations on the stator assembly 20 and the rotor assembly 30 inside the motor, but also makes the assembly structure between the first end plate 123 and the second end plate 124 and the housing 11 more stable and reliable.

[0096] The mounting tube 111 in this embodiment can be one of a cylindrical tube, a square tube structure, etc. Correspondingly, the first end cover 112, the second end cover 113, the first end plate 123 and the second end plate 124 are all closed ring hollow plate structures adapted to the mounting tube 111. The cover body 122 can be a plurality of cover plates that can cover two adjacent windshields. The cover body 122 is preferably a closed ring cover ring, so that multiple first windshields 121 can be covered at the same time through the cover ring. The shape of the cover ring can include one of a circle, a regular polygon, an ellipse, etc. The shape of the cover ring is selected based on the principle of enabling the motor to obtain a larger heat exchange area in a limited space. The main terminal box 50 of the motor is installed on the outside of the cover body 122, which improves the compactness and reliability of the overall structure of the motor.

[0097] See also Fig.12 In this embodiment, a plurality of through holes 131 and a plurality of second ventilation holes 132 are provided on the first end cover 112 and the second end cover 113. The plurality of through holes 131 are provided in one-to-one correspondence with the plurality of first mounting holes 241. The through holes 131 on the first end cover 112 are connected to the heat dissipation pipe 43 and the external environment of the machine base 10, so that the first end cover 112 does not hinder the discharge of hot air to the external environment, so that the hot air from the heat dissipation pipe 43 and the ventilation duct 103 can be discharged to the external environment along the second mounting gap 114 and the through holes 131 on the first end cover 112. The through holes 131 on the second end cover 113 are connected to the first blowing component 42 and the heat dissipation pipe 43, so that the wind blown out of the first blowing component 42 can be blown into the heat dissipation pipe 43 along the through holes 131 on the second end cover 113 and the second mounting gap 114. The plurality of second ventilation holes 132 are arranged in one-to-one correspondence with the plurality of first ventilation holes 242, and the first blowing component 42 is connected with the second ventilation holes 132 on the second end cover 113, so that the wind blown out by the first blowing component 42 can be blown into the ventilation duct 103 along the second ventilation holes 132, the second installation gap 114, and the first ventilation holes 242 in sequence. Therefore, in this embodiment, by setting the through hole 131 and the second ventilation hole 132 on the first end cover 112 and the second end cover 113, it is ensured that the first blowing component 42 can blow the wind into the heat dissipation pipe 43 and the ventilation duct 103, and the hot wind coming out of the heat dissipation pipe 43 and the ventilation duct 103 can be blown to the external environment, thereby effectively reducing the temperature rise inside the motor, ensuring the thermal stability and thermal safety of the motor internal organs, improving the heat dissipation effect, and making the structure of the base 10 more compact and reliable.

[0098] Both opposite ends of the rotating shaft 32 extend outside the first cavity 101, see Figure 1 In this embodiment, the first blowing component 42 includes an air guide cover 421 and a first fan 422. The air guide cover 421 is installed on the side of the base 10 close to the second end cover 113 and covers the second installation gap 114 (such as Fig. 9As shown in FIG. 1 , an air guide channel 211 is provided in the air guide cover 421, and the second ventilation hole 132 and the through hole 131 on the second end cover 113 are both connected to the air guide channel 211 and the second installation gap 114, and the end of the rotating shaft 32 close to the air guide cover 421 is located in the air guide channel 211. The first fan 422 is located in the air guide channel 211 and is connected to the rotating shaft 32. Therefore, in this embodiment, the wind generated by the rotation of the second fan 442 is transported toward the direction of the second end cover 113 through the air guide channel 211 in the air guide cover 421, so that the wind can be blown into the heat dissipation pipe 43 and the ventilation duct 103 along the second ventilation hole 132 and the through hole 131 on the second end cover 113. At the same time, since the air guide cover 421 covers the second installation gap 114 between the second end cover 113 and the second end plate 124, it can also prevent the wind from being lost from the second installation gap 114, thereby improving the constancy of the wind volume entering the heat dissipation pipe 43 and the ventilation duct 103 along the second installation gap 114, thereby further improving the heat dissipation effect of the motor.

[0099] The second cavity 102 in this embodiment can be a ventilation box installed on the shell 11 and located on at least one side of the ventilation duct 103. In order to improve the assembly efficiency of the second cavity 102, the second cavity 102 in this embodiment can be obtained by using the cover 122 and the first windshield 121. Specifically, in this embodiment, the cover 122 is also surrounded by at least two adjacent first windshields 121 and the shell 11 to form a second space. Along the rotation direction of the rotor assembly 30, the second space is located on at least one side of the ventilation duct 103, wherein the adjacent ventilation duct 103 and the second space can be separated by one or more first windshields 121, preferably by one first windshield 121, thereby increasing the volume of the ventilation duct 103 and the second cavity 102 within the limited space of the base 10. Furthermore, the ventilation duct 103 and the second cavity 102 each include multiple (for example, each may include four), and along the rotation direction of the rotor assembly 30, multiple ventilation ducts 103 and multiple second cavities 102 are surrounded and arranged on the shell 11, and the second cavity 102 is located between two adjacent ventilation ducts 103, so that the heat dissipation ribs 41 in the multiple ventilation ducts 103 and the second cavity 102 and the heat dissipation pipes 43 can simultaneously dissipate the heat of the motor, thereby improving the heat dissipation effect of the motor.

[0100] The side wall of the housing 11 close to the second cavity 102 is provided with a first opening 115 and a second opening 116. The mounting assembly 12 further includes a second windshield 125 (eg, Figure 3 to Figure 4 as well as Figure 7As shown in the figure, the second windshield 125 includes at least two pieces. At least two second windshields 125 are installed on the housing 11 at intervals along the first direction and are located in the second space. The inner side wall of the second space and the at least two second windshields 125 enclose the second cavity 102. Among them, the first opening 115 and the second opening 116 are arranged at intervals along the first direction and are respectively connected to the second cavity 102. Therefore, in this embodiment, only at least two second windshields 125 need to be added between at least two adjacent first windshields 121 to assemble and obtain the corresponding second cavity 102, which is efficient and convenient to assemble and has low cost. Specifically, each second cavity 102 is formed by two second wind shields 125 spaced apart along the first direction and the inner wall of the second space. If four second cavities 102 are arranged on the outside of the base 10 along the rotation direction of the rotor assembly 30, there will be four second wind shields 125 constituting the four second cavities 102. The number of second cavities 102 can also be three, five, six, seven, etc. according to the heat dissipation requirements of the motor. This embodiment does not make a single limitation on the number of second cavities 102, and the number of second wind shields 125 can be determined according to the number of second cavities 102.

[0101] like Fig.12 As shown, a plurality of third mounting holes 251 are arranged at intervals on the second windshield 125, and the heat dissipation pipe 43 also includes a second heat dissipation pipe 432, and the second heat dissipation pipe 432 includes a plurality of second heat dissipation pipes 432, and the plurality of second heat dissipation pipes 432 are arranged one by one with the plurality of third mounting holes 251 and penetrate the third mounting holes 251 to connect with the second windshield 125. The hot air entering the second cavity 102 passes between the second heat dissipation pipes 432 to exchange heat with the second heat dissipation pipes 432, and the heat circulating inside the motor is discharged into the atmosphere through the second heat dissipation pipes 432, so as to realize the heat conversion and discharge inside the motor, ensure the relative stability of the temperature of the stator assembly 20 and the rotor assembly 30, and ensure the thermal stability and thermal safety of the internal organs of the motor. Therefore, in this embodiment, the plurality of second heat dissipation pipes 432 are inserted into the second cavity 102, so as to increase the heat exchange area and heat exchange capacity when the motor dissipates heat through the second cavity 102. Moreover, the second wind shield 125 can also support and fix the second heat dissipation tube 432 to improve the stability of the second heat dissipation tube 432.

[0102] Since the heat dissipation pipe 43 is relatively long, in order to prevent the heat dissipation pipe 43 from vibrating, loosening, etc., the mounting assembly 12 in this embodiment further includes a support member, and a support member is provided in at least one of the ventilation duct 103 and the second cavity 102. The support member is used to support the heat dissipation pipe 43, that is, the support member can support the portion between the two opposite ends of the heat dissipation pipe 43, thereby further improving the stability of the heat dissipation pipe 43. Specifically, the support member is a support plate 126 of an annular structure adapted to the housing, combined with Figure 7 and Fig. 9 It can be seen that the support plate 126 is sleeved on the housing 11 and is located between two adjacent second windshield plates 125. Fig.13 As shown, the support plate 126 is provided with a plurality of fourth mounting holes 261 and a plurality of avoidance holes 262 at intervals in the circumferential direction, and there is at least one fourth mounting hole 261 between two adjacent avoidance holes 262. The plurality of fourth mounting holes 261 are provided in one-to-one correspondence with the plurality of heat dissipation pipes 43 so that the heat dissipation pipes 43 are passed through the fourth mounting holes 261 and connected with the support plate 126. The avoidance holes 262 of the support plate 126 located in the ventilation duct 103 are provided for the heat dissipation ribs 41 to pass through and are gap-matched with the heat dissipation ribs 41, so that the wind can blow from the gap between the heat dissipation ribs 41 and the avoidance holes 262 to the external environment of the base 10. The avoidance holes 262 of the support plate 126 located in the second cavity 102 are provided for the airflow in the internal wind path to pass through. Thus, the middle part of the plurality of heat dissipation pipes 43 is supported by the support plate 126, so as to improve the stability and firmness of the plurality of heat dissipation pipes 43, and the avoidance holes 262 provided on the support plate 126 will not affect the installation of the heat dissipation ribs 41 and the passage of wind.

[0103] There is a third installation gap 412 between the side of the heat dissipation rib 41 away from the housing 11 and the inner side wall of the cover 122, and the height of the heat dissipation rib 41 protruding from the outer side wall of the housing 11 is H (that is, the height is the height dimension of the heat dissipation rib 41 along the radial direction of the shaft 32). In order to enhance the heat dissipation effect of the heat dissipation rib 41, the third installation gap 412 between the top of the heat dissipation rib 41 close to the cover 122 and the cover 122 along the radial direction of the shaft 32 is theoretically as small as possible. On the one hand, the higher the protruding height of the heat dissipation rib 41 along the radial direction of the shaft 32, the larger the heat dissipation area and the higher the heat dissipation capacity. On the other hand, if the third installation gap 412 is too large, the cooling wind may move in a curve, increasing the wind friction loss. Therefore, on the basis of considering the welding and assembly processability and combining the need to obtain a better heat dissipation effect, in this embodiment, it is preferred that the third installation gap 412 is not greater than 10% H. In this case, the cooling wind is basically limited to the wedge-shaped space between the heat dissipation rib 41 and the heat dissipation rib 41 and the heat dissipation rib 41 and the first wind shield 121, which can better balance the heat dissipation performance and manufacturing processability. If the third installation gap 412 is one of 10%H, 9%H, 8%H, etc., when the third installation gap 412 is zero, the cover body 122 is in contact with the heat dissipation ribs 41, and the cooling wind is completely confined to the wedge-shaped space between the heat dissipation ribs 41 and the heat dissipation ribs 41 and the heat dissipation ribs 41 and the first wind shield 121.

[0104] See also Fig.14, the heat dissipation rib 41 in this embodiment is provided with a guide groove 410, and the guide groove 410 extends from one end of the heat dissipation rib 41 to the other end along the first direction. The guide groove 410 in this embodiment can guide the wind from the end of the heat dissipation rib 41 close to the first blowing component 42 (or close to the second end plate 124) to the end of the heat dissipation rib 41 close to the first end plate 123, so that the air volume received by each part of the heat dissipation rib 41 along its own length direction is larger and more balanced, thereby improving the heat dissipation effect of the heat dissipation rib 41. Secondly, when the volume of the heat dissipation rib 41 is limited, the guide groove 410 can also increase the heat dissipation area of ​​the heat dissipation rib 41, thereby increasing the heat exchange area and heat exchange efficiency of the heat dissipation rib 41, thereby greatly improving the heat dissipation efficiency of the motor. And / or, the guide groove 410 in this embodiment includes at least two, and along the rotation direction of the rotor assembly 30, at least two guide grooves 410 are respectively located on opposite sides of the heat dissipation rib 41 (such as Fig.14 As shown in FIG. 1 , the guide grooves 410 on opposite sides of the heat dissipation rib 41 are staggered in a direction away from the housing 11, thereby improving the heat dissipation effect of the heat dissipation rib 41 by providing at least two guide grooves 410, while ensuring the structural strength of the heat dissipation rib 41. The number of the guide grooves 410 in this embodiment may specifically include one of two, three, four, five, six, seven, eight, etc., or may be other numbers not less than two, so that the heat dissipation effect of the heat dissipation rib 41 is improved by at least two guide grooves.

[0105] In this embodiment, a receiving cavity is provided in the wall plate of at least one of the ventilation duct 103 and the second cavity 102. In the case of passive heat dissipation of the motor through the inner air path and the outer air path, in order to further improve the heat dissipation effect of the motor, the heat dissipation component provided in this embodiment also includes a phase change heat absorber, which is installed in the receiving cavity. The phase change heat absorber is a device that absorbs heat by utilizing the phase change process of the material. During the phase change process, such as the transition from solid to liquid or from liquid to gas, the phase change material absorbs heat. The embodiment of the present invention utilizes this characteristic of the phase change heat absorber to absorb the heat generated by the motor, that is, the active heat absorption of the motor is realized by the phase change heat absorber. Therefore, this embodiment can dissipate the heat generated by the motor to the external environment through the second cavity 102, the heat dissipation ribs 41 in the ventilation duct 103, and the heat dissipation pipe 43, and can also absorb part of the heat through the phase change heat absorber, so that the heat dissipation effect of the motor can be better.

[0106] Specifically, in the present embodiment, it is preferred that the wall panels of the ventilation duct 103 and the second cavity 102 are both provided with a receiving cavity in which a phase-change heat absorber is installed, thereby greatly improving the heat dissipation effect of the motor. Among them, since the wall panels of the ventilation duct 103 mainly include the shell 11, the first wind shield 121 and the cover 122, the present embodiment can provide a receiving cavity in at least one of the shell 11, the first wind shield 121 and the cover 122, and place a phase-change heat absorber in the receiving cavity. Similarly, since the wall panels of the second cavity 102 include the shell 11, the first wind shield 121, the cover 122 and the second wind shield 125, therefore, the present embodiment can provide a receiving cavity in at least one of the shell 11, the first wind shield 121, the cover 122 and the second wind shield 125, and place a phase-change heat absorber in the receiving cavity. In order to facilitate the installation of the phase-change heat absorber, the embodiment can specifically open a receiving groove on the corresponding wall panel first, and after the phase-change heat absorber is placed in the receiving groove, it can be covered by a buckle cover that matches the notch of the receiving groove. Secondly, the embodiment can also set the corresponding wall panel into two mutually buckled plate structures, at least one of the two plates is provided with a receiving groove on one side close to the other plate, and after the phase-change heat absorber is placed in the receiving groove, the two plates can be buckled. The phase-change heat absorber in the embodiment can specifically include at least one of a crystalline hydrated salt heat absorber (such as calcium chloride hexahydrate), a metal heat absorber, a paraffin heat absorber, an acetic acid heat absorber, a composite phase-change heat absorber, a solid-liquid phase-change heat absorber, and the like.

[0107] The second cavity 102 on the base 10 of this embodiment that participates in the internal circulation heat dissipation Figure 2 The example shows that there are four evenly distributed along the circumference of the rotating shaft 32. According to the heat exchange capacity and size of the motor, the number of second cavities 102 can also be 2, 3, 5, 6, etc. The number of second cavities 102 is set based on the limited space of the base 10 so that the motor can achieve a larger heat exchange area and balance the heat exchange between the internal and external air paths. The number of heat dissipation ribs 41 and the number of heat dissipation pipes 43 in the ventilation duct 103 can be reasonably matched according to the different heat exchange capacity and heat exchange efficiency of the internal and external air paths, so that the motor can reach a balance point with high heat exchange efficiency.

[0108] This embodiment improves the heat exchange capacity, balance and efficiency of heat exchange between the inner and outer air paths through the second cavity 102, the heat dissipation ribs 41 in the ventilation duct 103, and the heat dissipation pipes 43 running through the second cavity 102 and the ventilation duct 103, thereby improving the overall heat exchange efficiency and heat exchange capacity of the motor, and providing physical guarantee for improving the power level of the IC411 motor.

[0109] In conclusion, the motor provided in this embodiment has the following advantages:

[0110] 1. By adding a heat dissipation pipe 43 in the second cavity 102 which is relatively closed in the inner circulation air path, the channel for the heat inside the motor to be transmitted to the outside is increased, the heat exchange efficiency and heat exchange capacity of the inner circulation air path are expanded, and the motor winding temperature rise is reduced, the motor power grade is improved, and a physical guarantee is provided for increasing the capacity of the motor.

[0111] 2. By adding an enveloping cover 122 to the outer periphery of the heat dissipating ribs 41 on the base 10 away from the first cavity 101 in the external circulation air path, the cooling air between the heat dissipating ribs 41 and between the heat dissipating ribs 41 and the first wind shield 121 is confined to the wedge-shaped space between the heat dissipating ribs 41 and between the heat dissipating ribs 41 and the first wind shield 121 through the cover 122, ensuring that the amount of cooling air introduced between the heat dissipating ribs 41 is constant throughout the entire heat exchange process from entry to exit, thereby improving the heat exchange efficiency and heat exchange capacity, and providing physical guarantee for reducing the winding temperature rise of the motor, improving the power level of the motor, and increasing the capacity of the motor.

[0112] 3. By adding a heat dissipation pipe 43 between the heat dissipation ribs 41 on the base 10 in the external circulation air path, a channel for heat exchange in the external circulation air path is increased, and the heat exchange area, heat exchange efficiency and heat exchange capacity are increased, which further provides a reliable physical guarantee for reducing the winding temperature rise of the motor, improving the power level of the motor, and increasing the capacity of the motor.

[0113] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A motor, characterized in that: include: A machine base (10), wherein a first cavity (101), a second cavity (102) and a ventilation duct (103) are arranged in the machine base (10), the second cavity (102) and the ventilation duct (103) are both located outside the first cavity (101), the first cavity (101) is communicated with the second cavity (102), and the first cavity (101) and the second cavity (102) are both isolated from the ventilation duct (103); A stator assembly (20), the stator assembly (20) being installed in the first cavity (101); A rotor assembly (30), the rotor assembly (30) being rotatably connected to the machine base (10) and being clearance-matched with the stator assembly (20); A heat dissipation assembly (40), the heat dissipation assembly (40) comprising a heat sink, a first blowing component (42) and a second blowing component (44), the heat sink being installed in the ventilation duct (103), the first blowing component (42) being installed on the machine base (10), along a first direction, one side of the ventilation duct (103) being connected to the external environment of the machine base (10) and the other side being connected to the first blowing component (42), the second blowing component (44) being connected to the rotor assembly (30) and being located in the first cavity (101).

2. The motor according to claim 1, characterized in that The base (10) comprises: A housing (11), wherein the first cavity (101) is disposed in the housing (11); A mounting assembly (12), the mounting assembly (12) being connected to the outer wall of the shell (11) and being arranged together with the outer wall of the shell (11) to form the second cavity (102) and the ventilation duct (103); the heat sink is protruding from the outer wall of the shell (11) away from the first cavity (101) and is located in the ventilation duct (103).

3. The motor according to claim 2, characterized in that The heat sink comprises a plurality of heat dissipation ribs (41), the length of the heat dissipation ribs (41) extending along a first direction, and the mounting assembly (12) comprises: A first wind shield (121), the first wind shield (121) comprising at least two pieces, and along the rotation direction of the rotor assembly (30), at least two of the first wind shields (121) are installed on the housing (11) at intervals; A cover body (122), the cover body (122) is arranged to cover a side of at least two of the first wind shields (121) away from the shell (11), the first space enclosed by the cover body (122), at least two adjacent first wind shields (121) and the shell (11) serves as the ventilation duct (103), the second cavity (102) is located on at least one side of the ventilation duct (103) along the rotation direction of the rotor assembly (30), and along the rotation direction of the rotor assembly (30), a plurality of heat dissipation ribs (41) are arranged at intervals in the ventilation duct (103).

4. The motor according to claim 3, characterized in that The first blowing component (42) is installed on one side of the housing (11) along the first direction, and the heat dissipation assembly (40) further includes: A heat dissipation pipe (43) is provided in the second cavity (102) and the ventilation duct (103) and the heat dissipation pipe (43) is provided through the second cavity (102) and the ventilation duct (103), and one end of the heat dissipation pipe (43) close to the first blowing component (42) is connected to the first blowing component (42).

5. The motor according to claim 4, characterized in that The heat dissipation pipe (43) comprises: A first heat dissipation tube (431), wherein the first heat dissipation tube (431) comprises a plurality of first heat dissipation tubes (431), the plurality of first heat dissipation tubes (431) are arranged at intervals and penetrate the ventilation duct (103), at least one first heat dissipation tube (431) is located between two adjacent heat dissipation ribs (41), and / or at least one first heat dissipation tube (431) is located between the heat dissipation ribs (41) and the first wind shield (121); and / or there are a plurality of first heat dissipation tubes (431) between two adjacent heat dissipation ribs (41), and the plurality of first heat dissipation tubes (431) are arranged in sequence at intervals in a direction away from the shell (11).

6. The motor according to claim 4, characterized in that The installation assembly (12) further comprises: a first end plate (123), the first end plate (123) being mounted on a side of the shell (11) away from the first blowing component (42) along a first direction and covering an opening enclosed by the cover body (122) and the first wind shield (121); a second end plate (124), the second end plate (124) being mounted on a side of the shell (11) close to the first blowing component (42) along the first direction and covering an opening enclosed by the cover body (122) and the first wind shield (121); The first end plate (123) and the second end plate (124) are both provided with a plurality of first mounting holes (241) and a plurality of first ventilation holes (242) at intervals, a plurality of the heat dissipation pipes (43) are provided in a one-to-one correspondence with the plurality of the first mounting holes (241), and opposite sides of the heat dissipation pipes (43) pass through the first mounting holes (241) to be connected with the first end plate (123) and the second end plate (124); The plurality of first ventilation holes (242) are arranged in one-to-one correspondence with the plurality of heat dissipation ribs (41); the first ventilation holes (242) of the first end plate (123) are connected to the external environment of the machine base (10); and the first ventilation holes (242) of the second end plate (124) are connected to the first blowing component (42).

7. The motor according to claim 6, characterized in that Along a first direction, the heat dissipation rib (41) and at least one of the first end plate (123) and the second end plate (124) have a first installation gap (411); and / or the installation assembly (12) further includes: A sealing member is embedded in a gap between the first mounting hole (241) and the heat dissipation pipe (43).

8. The motor according to claim 6, characterized in that The rotor assembly (30) comprises a rotor core (31) and a rotating shaft (32), wherein the rotor core (31) is sleeved on the rotating shaft (32), and the housing (11) comprises: A mounting cylinder (111), wherein the stator assembly (20) is mounted in the mounting cylinder (111), and the first end plate (123) and the second end plate (124) are sleeved on an outer wall of the mounting cylinder (111); a first end cover (112), the first end cover (112) covering the mounting tube (111) and being located on a side of the first end plate (123) facing away from the second end plate (124); a second end cover (113), the second end cover (113) covering the installation cylinder (111) and being located on a side of the second end plate (124) away from the first end plate (123), the installation cylinder (111), the first end cover (112) and the second end cover (113) enclosing the first cavity (101), the rotating shaft (32) being rotatably connected to the first end cover (112) and the second end cover (113) and enabling clearance fit between the rotor core (31) and the stator assembly (20); Along the first direction, there is a second installation gap (114) between the first end cover (112) and the first end plate (123), and between the second end cover (113) and the second end plate (124); the second installation gap (114) between the first end cover (112) and the first end plate (123) is connected to the external environment of the machine base (10); the second installation gap (114) between the second end cover (113) and the second end plate (124) is connected to the first blowing component (42); along the radial direction of the rotating shaft (32), the side of the first end cover (112) away from the rotating shaft (32) protrudes from the outer wall of the installation tube (111) and is detachably connected to the first end plate (123); the side of the second end cover (113) away from the rotating shaft (32) protrudes from the outer wall of the installation tube (111) and is detachably connected to the second end plate (124).

9. The motor according to claim 8, characterized in that The first end cover (112) and the second end cover (113) are both provided with a plurality of through holes (131) and a plurality of second ventilation holes (132); the plurality of through holes (131) are arranged in one-to-one correspondence with the plurality of first mounting holes (241); the through holes (131) on the first end cover (112) are connected to the heat dissipation pipe (43) and the external environment of the machine base (10); the through holes (131) on the second end cover (113) are connected to the first blowing component (42) and the heat dissipation pipe (43); the plurality of second ventilation holes (132) are arranged in one-to-one correspondence with the plurality of first ventilation holes (242); the first blowing component (42) is connected to the second ventilation holes (132) on the second end cover (113).

10. The motor according to claim 9, characterized in that The opposite ends of the rotating shaft (32) extend outside the first cavity (101), and the first blowing component (42) comprises: an air guide cover (421), the air guide cover (421) being installed on a side of the machine base (10) close to the second end cover (113) and covering the second installation gap (114) between the second end cover (113) and the second end plate (124); an air guide channel (211) is provided in the air guide cover (421); the second ventilation hole (132) and the through hole (131) on the second end cover (113) are both connected to the air guide channel (211) and the second installation gap (114); and one end of the rotating shaft (32) close to the air guide cover (421) is located in the air guide channel (211); A first fan (422), wherein the first fan (422) is located in the air guide channel (211) and is connected to the rotating shaft (32).

11. The motor according to any one of claims 4 to 10, characterized in that: The cover (122) further encloses a second space with at least two adjacent first windshield plates (121) and the housing (11); along the rotation direction of the rotor assembly (30), the second space is located on at least one side of the ventilation duct (103); a first opening (115) and a second opening (116) are provided on a side wall of the housing (11) close to the second cavity (102); and the mounting assembly (12) further comprises: A second wind shield (125), the second wind shield (125) includes at least two pieces, at least two of the second wind shields (125) are installed on the shell (11) at intervals along the first direction and are located in the second space, the inner side wall of the second space and the at least two of the second wind shields (125) enclose the second cavity (102), wherein the first opening (115) and the second opening (116) are arranged at intervals along the first direction and are respectively connected to the second cavity (102).

12. The motor according to claim 11, characterized in that The second wind shield (125) is provided with a plurality of third mounting holes (251) at intervals, and the heat dissipation pipe (43) further comprises: A second heat dissipation tube (432), wherein the second heat dissipation tube (432) comprises a plurality of second heat dissipation tubes (432), the plurality of second heat dissipation tubes (432) penetrate the second cavity (102), and the plurality of second heat dissipation tubes (432) are arranged in a one-to-one correspondence with the plurality of third mounting holes (251) and penetrate the third mounting holes (251) to be connected with the second wind shield (125).

13. The motor according to any one of claims 4 to 10, characterized in that The installation assembly (12) further comprises: a support member, wherein the support member is disposed in at least one of the ventilation duct (103) and the second cavity (102), and the support member is used to support the heat dissipation pipe (43); and / or, A third installation gap (412) is provided between the side of the heat dissipation rib (41) away from the shell (11) and the inner wall of the cover body (122); the height of the heat dissipation rib (41) protruding from the outer wall of the shell (11) is H, and the third installation gap (412) is not greater than 10% of H.

14. The motor according to any one of claims 3 to 10, characterized in that A guide groove (410) is provided on the heat dissipation rib (41), and along a first direction, the guide groove (410) extends from one end of the heat dissipation rib (41) to the other end, and / or the guide groove (410) includes at least two guide grooves, and along the rotation direction of the rotor assembly, at least two guide grooves (410) are respectively located on opposite sides of the heat dissipation rib (41), and the guide grooves (410) on opposite sides of the heat dissipation rib (41) are staggered in a direction away from the shell (11).

15. The motor according to any one of claims 1 to 10, characterized in that A receiving cavity is provided in a wall plate of at least one of the ventilation duct (103) and the second cavity (102), and the heat dissipation component further comprises: A phase-change heat absorber is installed in the accommodating cavity.

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