electric machine

Abstract

The application discloses a motor, which comprises a base, a stator assembly, a rotor assembly and a heat dissipation assembly, wherein the base is provided with a first cavity, a second cavity and a ventilation channel, the second cavity and the ventilation channel are located outside the first cavity, the first cavity is communicated with the second cavity, and the first cavity and the second cavity are mutually isolated from the ventilation channel; the stator assembly is installed in the first cavity; the rotor assembly is rotationally connected with the base and is gap-fitted 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 base, one side of the ventilation channel is communicated with the external environment of the base along a first direction, and the other side is communicated with the first blowing part, the second blowing part is connected with the rotor assembly and is located in the first cavity. The application solves the problems of poor heat dissipation effect of the motor and bottleneck of ventilation and heat dissipation capacity.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to an electric machine. BACKGROUND

[0002] The electric machine refers to an electromagnetic device for realizing the conversion or transmission of electric energy according to the electromagnetic induction law. The main function of the electric machine is to generate driving torque, which is widely used as a power source for electric appliances or various machines in industry, commerce and household appliances. Therefore, a large amount of heat will be generated in the process of long-time working of the electric machine. If the heat is not dissipated in time, it will have a serious impact on the service life of the electric machine. Although the current compact electric machine has a compact structure, the heat dissipation effect is poor and the ventilation and heat dissipation capacity has a bottleneck. SUMMARY

[0003] The main purpose of the present application is to provide an electric machine to solve the problem of poor heat dissipation effect and bottleneck of ventilation and heat dissipation capacity in the background technology.

[0004] According to one aspect of the present application, an electric machine is provided, comprising:

[0005] A machine base is provided with a first cavity, a second cavity and a ventilation channel. The second cavity and the ventilation channel are located outside the first cavity. The first cavity is in communication with the second cavity, and the first cavity and the second cavity are isolated from the ventilation channel.

[0006] A stator assembly is installed in the first cavity.

[0007] A rotor assembly is rotatably connected to the machine base and gap-fitted with the stator assembly.

[0008] A heat dissipation assembly comprises a heat dissipation member, a first blowing component and a second blowing component. The heat dissipation member is installed in the ventilation channel. The first blowing component is installed on the machine base. In a first direction, one side of the ventilation channel is in communication with the external environment of the machine base, and the other side is in communication with the first blowing component. The second blowing component is connected to the rotor assembly and located in the first cavity.

[0009] Further, the machine base comprises:

[0010] A housing is provided with the first cavity.

[0011] An installation assembly is connected to the outer side wall of the housing and surrounds the outer side wall of the housing to form the second cavity and the ventilation channel. The heat dissipation member protrudes from the outer side wall of the housing away from the first cavity and is located in the ventilation channel.

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

[0013] The first baffle comprises at least two baffle plates, which are arranged on the shell in the rotation direction of the rotor assembly and are spaced apart from each other.

[0014] The cover covers the side of the at least two first baffle plates away from the shell, and the cover, the at least two adjacent first baffle plates and the shell form a first space as the air duct, and the second cavity is located on at least one side of the air duct in the rotation direction of the rotor assembly. A plurality of heat dissipation ribs are arranged in the air duct in the rotation direction of the rotor assembly.

[0015] Further, the first air blowing component is arranged on one side of the shell in the first direction, and the heat dissipation assembly further comprises:

[0016] The heat dissipation pipe is arranged through the second cavity and the air duct, and one end of the heat dissipation pipe close to the first air blowing component is in communication with the first air blowing component.

[0017] Further, the heat dissipation pipe comprises:

[0018] The first heat dissipation pipe comprises a plurality of pipes, the plurality of first heat dissipation pipes are arranged in the air duct in a spaced apart manner, at least one first heat dissipation pipe is arranged between two adjacent heat dissipation ribs, and / or at least one first heat dissipation pipe is arranged between the heat dissipation rib and the first baffle plate, and / or there are a plurality of first heat dissipation pipes between two adjacent heat dissipation ribs, and the plurality of first heat dissipation pipes are arranged in a spaced apart manner in the direction away from the shell.

[0019] Further, the mounting assembly further comprises:

[0020] The first end plate is arranged on one side of the shell in the first direction away from the first air blowing component and covers the opening formed by the cover and the first baffle plate.

[0021] The second end plate is arranged on one side of the shell in the first direction close to the first air blowing component and covers the opening formed by the cover and the first baffle plate.

[0022] A plurality of first mounting holes and a plurality of first air holes are arranged on the first end plate and the second end plate in a spaced apart manner, a plurality of heat dissipation pipes are arranged in one-to-one correspondence with the first mounting holes, and the opposite sides of the heat dissipation pipes are arranged through the first mounting holes and connected with the first end plate and the second end plate.

[0023] The first ventilation holes of the first end plate are in communication with the external environment of the base, and the first ventilation holes of the second end plate are in communication with the first blowing component.

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

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

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

[0027] An installation cylinder, the stator assembly is installed in the installation cylinder, and the first end plate and the second end plate are sleeved on the outer wall of the installation cylinder;

[0028] A first end cover covers the installation cylinder and is located on the side of the first end plate away from the second end plate;

[0029] A second end cover covers the installation cylinder and is located on the 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 rotationally connected with the first end cover and the second end cover, and the rotor core is in clearance fit with the stator assembly.

[0030] The first end cover and the first end plate, and the second end cover and the second end plate have a second installation gap in the first direction, the second installation gap between the first end cover and the first end plate is in communication with the external environment of the base, the second installation gap between the second end cover and the second end plate is in communication with the first blowing component, in 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 installation cylinder and is detachably connected with the first end plate, and the side of the second end cover away from the rotating shaft protrudes from the outer wall of the installation cylinder and is detachably connected with the second end plate.

[0031] Further, a plurality of through holes and a plurality of second ventilation holes are arranged on the first end cover and the second end cover, the plurality of through holes are arranged one-to-one corresponding to the plurality of first mounting holes, the through holes on the first end cover are in communication with the heat dissipation pipe and the external environment of the base, the through holes on the second end cover are in communication with the first blowing component and the heat dissipation pipe, the plurality of second ventilation holes are arranged one-to-one corresponding to the plurality of first ventilation holes, and the first blowing component is in communication with the second ventilation holes on the second end cover.

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

[0033] A wind guide cover is arranged on the base close to the second end cover and covers the second mounting gap between the second end cover and the second end plate, a wind guide channel is arranged in the wind guide cover, the second ventilation holes and the through holes on the second end cover are in communication with the wind guide channel and the second mounting gap, and the end of the rotating shaft close to the wind guide cover is located in the wind guide channel.

[0034] A first fan is arranged in the wind guide channel and connected with the rotating shaft.

[0035] Further, the cover body further encloses a second space with at least two adjacent first wind baffles and the shell, the second space is located on at least one side of the ventilation channel in the rotation direction of the rotor assembly, the shell is provided with a first opening and a second opening on the side wall close to the second cavity, and the mounting assembly further comprises:

[0036] The second wind baffles comprise at least two, the at least two second wind baffles are arranged on the shell in a first direction and located in the second space, and the inner side wall of the second space and the at least two second wind baffles enclose the second cavity, wherein the first opening and the second opening are arranged in a first direction and in communication with the second cavity, respectively.

[0037] Further, a plurality of third mounting holes are arranged on the second wind baffles, and the heat dissipation pipe further comprises:

[0038] The second heat dissipation pipes comprise a plurality of, the plurality of second heat dissipation pipes penetrate the second cavity, and the plurality of second heat dissipation pipes are arranged one-to-one corresponding to the plurality of third mounting holes and connected with the second wind baffles through the third mounting holes.

[0039] Further, the mounting assembly further comprises:

[0040] a support arranged in at least one of the ventilation channel and the second cavity, the support being configured to support the heat dissipation pipe; and / or,

[0041] The third installation gap is not greater than 10% of the height H of the heat dissipation rib protruding from the outer sidewall of the shell.

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

[0043] Further, the wall plate of at least one of the ventilation channel and the second cavity is provided with a receiving cavity, and the heat dissipation assembly further includes:

[0044] A phase change heat absorber is arranged in the receiving cavity.

[0045] In the present application, the second cavity and the first cavity arranged in the motor frame are in communication, and the heat generated by the stator assembly and the rotor assembly during operation of the stator assembly and the rotor assembly can flow into the second cavity, so as to conduct and release the heat to the air around the frame through the wall plate of the second cavity. The heat in the frame can also be conducted to the heat dissipation member in the outer ventilation channel of the frame, and the first blowing component blows air to the heat dissipation member to blow the heat to the external environment, thereby taking away the heat conducted from the inside of the motor frame to the heat dissipation member. At the same time, since the heat dissipation member is located in the ventilation channel, the ventilation channel can ensure the constancy of the air volume of each part of the air blown to the heat dissipation member in the process of guiding the air blown by the first blowing component into the heat dissipation member along the first direction, so that the air blown by the first blowing component to the heat dissipation member cannot be dissipated along the first direction, thereby improving the strength and uniformity of the air force received by each part of the heat dissipation member, and further improving the heat exchange efficiency of the motor, thereby providing physical support for capacity expansion of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0046] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof 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 structural schematic diagram of a motor provided by an embodiment of the present application is shown in the figure;

[0048] Figure 2 A front view of the motor provided by the embodiment of the present application is shown in the figure; Figure 1 A front view of the motor provided by the embodiment of the present application is shown in the figure;

[0049] Figure 3 is a detailed view of the Y1 portion in FIG. 1; Figure 1

[0050] Figure 4 is a detailed view of the Y2 portion in FIG. 1; Figure 1

[0051] Figure 5 is a detailed view of the Y3 portion in FIG. 1; Figure 2

[0052] Figure 6 is a detailed view of the A-A section in FIG. 1; Figure 2

[0053] Figure 7 is a detailed view of the D portion in FIG. 1; Figure 6

[0054] Figure 8 is an end view of the housing in FIG. 1; Figure 6

[0055] Figure 9 is an assembly view of the heat dissipation ribs and the second blowing part in the housing in FIG. 1;

[0056] Figure 10 is a structural view of the first end plate or the second end plate;

[0057] Figure 11 is a structural view of the first end cover or the second end cover;

[0058] Figure 12 is a structural view of the second baffle plate;

[0059] Figure 13 is a structural view of the support plate;

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

[0061] In the above drawings, the following reference signs are used:

[0062] ​​​​​​10, base; 101, first cavity; 1011, first heat dissipation space; 1012, second heat dissipation space; 102, second cavity; 103, air duct; 11, shell; 111, mounting cylinder; 112, first end cover; 113, second end cover; 131, through hole; 132, second air vent; 114, second mounting gap; 115, first opening; 116, second opening; 12, mounting assembly; 121, first baffle; 122, cover; 123, first end plate; 124, second end plate; 241, first mounting hole; 242, first air vent; 243, connecting hole; 125, second baffle; 251, third mounting hole; 126, support plate; 261, fourth mounting hole; 262, avoiding hole; 20, stator assembly; 21, stator core; 22, coil winding; 30, rotor assembly; 31, rotor core; 311, axial air vent; 32, rotating shaft; 40, heat dissipation assembly; 41, heat dissipation rib; 410, flow guide groove; 411, first mounting gap; 412, third mounting gap; 42, first blowing component; 421, air guide cover; 211, air guide channel; 422, first fan; 43, heat dissipation pipe; 431, first heat dissipation pipe; 432, second heat dissipation pipe; 44, second blowing component; 441, air guide pipe; 442, second fan; 50, main terminal box. DETAILED DESCRIPTION

[0063] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

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

[0065] The existing compact motor (such as the motor of the cooling mode IC411, the surface of the fully enclosed motor shell is heat dissipated, and the inner and outer air passages provided by the inner and outer fans are used for cooling and heat dissipation). The compact motor has a congenital deficiency in the ventilation and heat dissipation capacity, and the power upgrade and capacity increase capacity cannot be comparable to the air-air cooling type motor. The cooling treatment measures for the winding with relatively high temperature are very limited, the heat exchange efficiency is limited, and the ventilation and heat dissipation capacity is bottlenecked.

[0066] To this end, in order to break through the technical bottleneck of the heat dissipation capacity of the motor, the inventor of the present application has found through in-depth research that although an inner air duct and an outer air duct are arranged on the motor to simultaneously dissipate heat from the motor, the heat dissipation capacity is still limited. For example, one or more ventilation boxes (such as four ventilation boxes) are uniformly distributed along the circumference of the motor base 10 in the circumferential direction to carry away the heat generated by the circulation in the motor, but the inner wall area of the ventilation box is limited, the heat conduction efficiency is limited, and the ventilation and heat dissipation capacity is bottlenecked. The outer air duct mainly dissipates heat by distributing and arranging heat dissipation ribs 41 on the outer side of the motor base 10, and the heat dissipation ribs 41 and the cooling air flowing therebetween exchange heat to carry away the heat transferred from the inside of the motor base 10 to the heat dissipation ribs 41. At this time, since the heat dissipation ribs 41 are located in the open space on the outer side of the base 10, and since the heat dissipation ribs 41 are open and scattered, the cooling air will flow away 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 direction indicated by arrow X) in the process of blowing to the heat dissipation ribs 41, and the smaller the radial height of the heat dissipation ribs 41, the more the cooling air is lost, which gradually reduces the amount and force of the wind on the side of the heat dissipation ribs 41 away from the air inlet, greatly limiting the heat exchange efficiency.

[0067] To solve the problem of poor heat dissipation effect of the motor and the bottleneck of the ventilation and heat dissipation capacity, please see Figures 1 to 13 , the present application provides a motor, as shown in Figure 1 , which comprises a base 10, a stator assembly 20, a rotor assembly 30 and a heat dissipation assembly 40. The base 10 is provided with a first cavity 101, a second cavity 102 and a ventilation channel 103. The second cavity 102 and the ventilation channel 103 are located on the outer side of the first cavity 101, the first cavity 101 communicates with the second cavity 102, and the first cavity 101 and the second cavity 102 are both isolated from the ventilation channel 103. The stator assembly 20 is installed in the first cavity 101. The rotor assembly 30 is rotationally connected with the base 10 and gap-fitted with the stator assembly 20, as shown in Figure 1 and Figures 3 to 4As shown, the gap between the rotor assembly 30 and the stator assembly 20 is indicated by symbol g. The heat dissipation assembly 40 includes a heat sink, a first air blowing component 42, and a second air blowing component 44. The heat sink is installed within the ventilation duct 103, and the first air blowing component 42 is installed on the base 10. Along a first direction, one side of the ventilation duct 103 communicates with the external environment of the base 10, and the other side communicates with the first air blowing component 42. The first air blowing component 42 is used at least to blow air into the ventilation duct 103. Heat inside the motor base 10 can be conducted along the base 10 to the heat sink. During the process of the first air blowing component 42 onto the heat sink, the heat on the heat sink is blown by the cooling air to the external environment of the base 10. Moreover, during the process of the first air blowing component 42 onto the heat sink in the ventilation duct 103, the cooling air does not lose energy along the first direction. The ventilation duct 103 can ensure that the airflow from the first air blowing component 42 onto each part of the heat sink is constant (i.e., Figure 1 (The airflow along the first direction indicated by serial number ② is constant), thereby improving the heat exchange effect and efficiency of the heat sink.

[0068] In addition to cooling the motor by blowing air into the heat sink in the ventilation duct 103 through the first air blowing component 42, the heat generated by the stator assembly 20 and rotor assembly 30 in the first cavity 101 can flow into the second cavity 102 since the second cavity 102 is connected to the first cavity 101. The heat generated by the stator assembly 20 and rotor assembly 30 in the first cavity 101 can then be dissipated to the external environment of the frame 10 through the wall 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 air blowing component 44 of the heat dissipation assembly 40 is connected to the rotor assembly 30 and located in the first cavity 101, so that the hot air in the first cavity 101 is blown to the second cavity 102 for cooling through the second air blowing component 44, and the cooled air is then returned from the second cavity 102 to the first cavity 101.

[0070] like Figures 3 to 4 as well as Figure 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 in communication with 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 airflow to the second cavity 102 for cooling, the cooled airflow enters the first heat dissipation space 1011, and then enters the second heat dissipation space 1012 from the gap g between the stator assembly 20 and the rotor assembly 30, and then the second blowing component 44 blows the airflow carrying heat to the second cavity 102 again. The above process is repeated, and the motor interior is cooled by the internal air path (i.e. Figure 1 the air path indicated by serial number ①) between the first cavity 101 and the second cavity 102.

[0071] The stator assembly 20 in the 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. The rotating shaft 32 is arranged through the base 10 and is rotationally connected with the base 10. The rotor core 31 is sleeved on the rotating shaft 32 and is gap-fitted with the stator core 21, so that the rotor core 31 can rotate relative to the stator core 21. The rotor core 31 is provided with an axial ventilation hole 311 (as shown in Figure 1 and Figure 3 and Figure 4 In addition to entering the second heat dissipation space 1012 from the gap g between the rotor core 31 and the stator core 21 for heat dissipation, the cooled airflow entering the first heat dissipation space 1011 can also enter the second heat dissipation space 1012 from the axial ventilation hole 311 in the rotor core 31, and then the second blowing component 44 blows the hot airflow to the second cavity 102 for heat dissipation.

[0072] Please refer to Figure 1 and Figures 3 to 4The housing 11 of the base 10 is provided with a first opening 115 and a second opening 116 in the first direction on the side wall close to the second cavity 102. The first opening 115 communicates the second cavity 102 and the first heat dissipation space 1011, and the second opening 116 communicates 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 the embodiment includes a wind guide pipe 441 and a second fan 442. The wind guide pipe 441 is installed on the rotating shaft 32, one end of the wind guide pipe 441 communicates with the axial air vent 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 convey the hot air flow along the second opening 116 to the second cavity 102. The second fan 442 is installed in the wind guide pipe 441, and the second fan 442 is used to disturb the air flow to generate wind power to efficiently guide the hot air flow into the second cavity 102 through the wind guide pipe 441. In this way, the second fan 442 blows the heat generated by the stator assembly 20 and the rotor assembly 30 to the second cavity 102 from the second heat dissipation space 1012, so as to dissipate the heat carried by the air flow to the outside of the base 10 through the second cavity 102. The air flow cooled by the second cavity 102 enters the first heat dissipation space 1011 along the first opening 115 again, and then circulates to the second heat dissipation space 1012 from the axial air vent 311 and the fitting gap between the stator assembly 20 and the rotor assembly 30, and then the second fan 442 continues to blow the air flow with increased temperature to the second cavity 102 for cooling. The process is repeated, so as to realize the heat generated by the stator assembly 20 and the rotor assembly 30 in the first cavity 101 of the motor being guided into the second cavity 102, and then being conducted by the wall of the second cavity 102 and released to the air around the base 10.

[0073] As can be seen from the above, the embodiment can dissipate the heat inside the motor to the external environment of the motor through the second cavity 102, and at the same time, the first blowing component 42 blows the heat conducted by the motor to the heat dissipation member in the air duct 103 to the external environment, because the air duct 103 can avoid the air blown by the first blowing component 42 being dissipated in the first direction, the constancy of the air volume received by each part of the heat dissipation member 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 the present embodiment, the second cavity 102 and the first cavity 101 are in communication in the motor frame 10, and 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 into the second cavity 102, and the heat can be conducted to the air around the motor frame 10 through the wall of the second cavity 102. The heat in the motor frame 10 can also be conducted to the heat dissipation member in the ventilation channel 103 outside the motor frame 10, and the first blowing component 42 blows the heat to the outside environment, thereby taking away the heat conducted from the inside of the motor frame 10 to the heat dissipation member. At the same time, since the heat dissipation member is located in the ventilation channel 103, the ventilation channel 103 can ensure the constancy of the air volume of each part of the heat dissipation member blown in the first direction during the process of guiding the air blown by the first blowing component 42 to the heat dissipation member, so that the air blown by the first blowing component 42 to the heat dissipation member cannot be lost in the first direction, thereby improving the strength and uniformity of the air force received by each part of the heat dissipation member, and further improving the heat exchange efficiency of the motor, thereby providing physical support for the capacity expansion of the motor.

[0075] Referring to Figures 2 to 13 , the motor frame 10 in the present embodiment includes a shell 11 and a mounting assembly 12, and the first cavity 101 is arranged in the shell 11. The mounting assembly 12 is connected to the outer side wall of the shell 11 and surrounds the outer side wall of the shell 11 to form the second cavity 102 and the ventilation channel 103, and the heat dissipation member is protruded from the outer side wall of the shell 11 away from the first cavity 101 and located in the ventilation channel 103. Therefore, after the heat dissipation member is arranged on the outer side wall of the shell 11, the mounting assembly 12 is mounted on the shell 11 to obtain the corresponding second cavity 102 and ventilation channel 103, and the ventilation channel 103 covers the heat dissipation member, so that the heat dissipation member is not exposed to the outside environment of the motor frame 10, and the assembly is convenient. And the air flow blown by the first blowing component 42 to the heat dissipation member can be uniformly conducted to each part of the heat dissipation member through the ventilation channel 103, so that the air volume received by each part of the heat dissipation member is balanced, thereby improving the heat dissipation efficiency and effect of the heat dissipation member.

[0076] In some embodiments, the heat dissipation member can be a plurality of heat dissipation protrusions, and the plurality of heat dissipation protrusions are arranged in multiple rows along the first direction, and the multiple rows of heat dissipation protrusions are sequentially and spaced apart along the rotation direction of the rotating shaft 32 (or the rotor assembly 30). However, in order to improve the processing convenience of the motor frame 10, preferably, as shown in Figure 2 and Figure 9 , the heat dissipation member includes a plurality of heat dissipation ribs 41, and the length of the heat dissipation rib 41 extends along the first direction, and the heat dissipation rib 41 can extend along the first direction from one end of the shell 11 to the other end.

[0077] Referring to Figure 2 and Figure 8The mounting assembly 12 comprises a first wind baffle 121 and a cover 122. The first wind baffle 121 comprises at least two first wind baffles 121 which are spaced apart along the rotation direction of the rotor assembly 30 (i.e. the circumferential direction of the rotating shaft 32) and are mounted on the housing 11. The cover 122 covers the side of the at least two first wind baffles 121 away from the housing 11. The cover 122, the at least two adjacent first wind baffles 121 and the housing 11 enclose a first space as a ventilation channel 103. The second cavity 102 is located on at least one side of the ventilation channel 103 along the rotation direction of the rotor assembly 30. A plurality of heat dissipation ribs 41 are spaced apart in the ventilation channel 103 along the rotation direction of the rotor assembly 30. Thus, the first air blowing part 42 blows air to the heat dissipation ribs 41 through the first wind baffle 121 and the cover 122, and the air is limited in the wedge-shaped space between the adjacent two heat dissipation ribs 41 and between the heat dissipation rib 41 and the first wind baffle 121, so that the air does not dissipate along the way, ensuring the constant air volume of each part of the plurality of heat dissipation ribs 41 in the length direction, improving the heat exchange efficiency of the plurality of heat dissipation ribs 41, and further improving the heat dissipation efficiency and effect of the motor. Moreover, the first wind baffle 121 is mounted on the housing 11, and the corresponding ventilation channel 103 can be obtained by covering the first wind baffle 121 with the cover 122, which is efficient and convenient to assemble, and can improve the production efficiency of the motor.

[0078] The first air blowing part 42 is mounted on one side of the housing 11 along the first direction. In order to improve the heat exchange area and capacity of the heat dissipation assembly 40 when dissipating heat from the motor, increase the heat dissipation treatment measures of the motor when coping with high temperature working state, and further improve the heat dissipation capacity of the motor provided by the embodiment. For this purpose, the heat dissipation assembly 40 in the embodiment further comprises a heat dissipation pipe 43. The heat dissipation pipe 43 can be provided in at least one of the second cavity 102 and the ventilation channel 103, and preferably provided in both the second cavity 102 and the ventilation channel 103. The end of the heat dissipation pipe 43 close to the first air blowing part 42 is in communication with the first air blowing part 42, so that the air blown by the air blowing part can enter the heat dissipation pipe 43 and carry away the heat generated by the motor through the air flowing in the heat dissipation pipe 43. The shape of the cross section of the heat dissipation pipe 43 can be one of circular, square, regular polygon, etc. The shape of the heat dissipation pipe 43 is selected according to the principle of obtaining larger heat exchange area for the motor.

[0079] Specifically, as shown in Figure 3 and Figure 4 When the heat dissipation pipe 43 is arranged in the second cavity 102, the heat dissipation mode of the motor through the internal circulation air path (i.e. internal air path ①) circulating between the first cavity 101 and the second cavity 102 will include the following two modes:

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

[0081] 12) : In the closed second cavity 102, a heat dissipation pipe 43 is added, and the hot air from the first cavity 101 exchanges heat with the heat dissipation pipe 43 during the process of entering and exiting the second cavity 102. The heat is taken away by the cooling air blown into the heat dissipation pipe 43 by the first blowing component 42, and then discharged from the end of the heat dissipation pipe 43 away from the first blowing component 42 into the air around the base 10. In this way, by adding the heat dissipation pipe 43 in the second cavity 102, the heat exchange channel inside the motor is increased, and the heat exchange area when the motor dissipates heat through the second cavity 102 is improved, that is, the heat exchange capacity and efficiency of the internal air duct are improved, providing physical support for motor capacity expansion.

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

[0083] 21) : The first blowing component 42 blows air to the heat dissipation ribs 41 and the wedge-shaped space between the heat dissipation ribs 41, and dissipates the heat from the inside of the base 10 to the outside space.

[0084] 22) : The ventilation channel 103 enclosed by the cover 122 and the first baffle 121 limits the cooling air blown by the first blowing component 42 to the wedge-shaped space between the adjacent two heat dissipation ribs 41 and the heat dissipation ribs 41 and the first baffle 121, so that the cooling air does not dissipate along the way, and further ensures the constant air volume to improve the heat exchange efficiency of the motor, providing physical support for motor capacity expansion.

[0085] 23) : Another part of the air blown by the first blowing component 42 enters the heat dissipation pipe 43 located in the ventilation channel 103, and the air closely contacts the heat dissipation pipe 43 during the process of flowing in the first direction. The cooling air becomes hot air after taking away the heat from the motor interior introduced by the heat dissipation ribs 41 and is discharged to the external environment, realizing the heat from the motor interior is brought back to the atmosphere. Compared with the heat dissipation ribs 41 in the external circulation air duct, this embodiment adds the heat dissipation pipe 43, which can multiply the heat exchange area and capacity of the motor in the limited space of the base 10, thereby effectively reducing the temperature rise in the motor, ensuring the thermal stability and safety of the motor interior, increasing the heat exchange area, efficiency and capacity, and providing physical support for reducing the winding temperature rise of the motor, improving the power grade of the motor, and expanding the capacity of the motor.

[0086] The embodiment preferably installs the heat dissipation pipe 43 in the second cavity 102 and the ventilation channel 103, so that when the motor is cooled by the inner air channel and the outer air channel, the cooling mode will include the above-mentioned two cooling modes in the inner air channel and the above-mentioned three cooling modes in the outer air channel, and the motor is cooled by a total of five cooling modes in the inner air channel and the outer air channel, so that the heat exchange area and the heat exchange capacity of the motor are greatly improved, and the heat exchange efficiency is higher and the cooling effect is better.

[0087] In order to improve the cooling effect of the ventilation channel 103 on 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 channel 103. At least one first heat dissipation pipe 431 is located between the adjacent two heat dissipation ribs 41, so as to increase the heat exchange area and the heat exchange capacity of the heat dissipation assembly 40 on the motor 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 baffle 121, so as to increase the heat exchange area and the heat exchange capacity of the heat dissipation assembly 40 on the motor through the first heat dissipation pipe 431 between the heat dissipation rib 41 and the first baffle 121. And / or, the adjacent two heat dissipation ribs 41 of the embodiment have a plurality of first heat dissipation pipes 431, and the plurality of first heat dissipation pipes 431 are arranged at intervals in the direction away from the housing 11 (which is the radial direction of the rotating shaft 32), so that the heat exchange area and the heat exchange capacity of the heat dissipation assembly 40 on the motor are larger and higher due to the plurality of first heat dissipation pipes 431 between the adjacent two heat dissipation ribs 41.

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

[0089] As shown in Figure 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. A plurality of heat dissipation pipes 43 are provided in one-to-one correspondence with the plurality of first mounting holes 241, and the opposite sides of the heat dissipation pipes 43 both penetrate the first mounting holes 241 and are connected with the first end plate 123 and the second end plate 124, so that the heat dissipation pipes 43 are installed on the shell 11 through the plurality of first mounting holes 241 provided on the first end plate 123 and the second end plate 124 and penetrate the ventilation channel 103 and the second cavity 102, improving the connection stability and firmness between the heat dissipation pipes 43 and the base 10, and the assembly is efficient and convenient. A plurality of first ventilation holes 242 are provided 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 in communication with the external environment of the base 10, so that the heat on the heat dissipation ribs 41 can be blown by the wind along the first ventilation holes 242 on the first end plate 123 into the air of the external environment. 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 by the first blowing component 42 can enter the ventilation channel 103 along the first ventilation holes 242 of the second end plate 124 and blow to the heat dissipation ribs 41.

[0090] As can be seen, the first end plate 123 and the second end plate 124 installed on the shell 11 are used to install and fix the heat dissipation pipes 43 penetrating the ventilation channel 103 and the second cavity 102, improving the connection stability and strength between the heat dissipation pipes 43 and the shell 11, and making the overall structure of the base 10 more stable and reliable. And through the first ventilation holes 242 provided on the second end plate 124, it is ensured that the wind blown by the first blowing component 42 can be blown into the ventilation channel 103, and then the heat on the heat dissipation ribs 41 in the ventilation channel 103 is blown from the first ventilation holes 242 on the first end plate 123 to the external environment of the base 10. At the same time, the first blowing component 42 also blows part of the wind to the heat dissipation pipes 43, so that the heat of the motor is dissipated to the external environment of the base 10 through the heat dissipation pipes 43 to further improve the heat dissipation effect of the motor.

[0091] In the first direction, the heat dissipation ribs 41 have a first installation gap 411 with at least one of the first end plate 123 and the second end plate 124 (as shown). Figure 9 The first installation gap 411 between the heat dissipation ribs 41 and the second end plate 124 can ensure that the wind circulates between the heat dissipation ribs 41, improving the blowing efficiency of the wind entering the ventilation channel 103 along the first ventilation holes 242 on the second end plate 124, thereby improving the heat dissipation efficiency. The first installation gap 411 between the heat dissipation ribs 41 and the first end plate 123 can improve the blowing efficiency of the hot air blown 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 time and quickly, improving the heat dissipation efficiency.

[0092] In the embodiment, the mounting assembly 12 further comprises a sealing member embedded in the gap between the first mounting hole 241 and the heat dissipation pipe 43, so that the contaminants such as rain and dust in the external environment are less likely to enter the space enclosed by the cover 122 and the first baffle 121, thereby improving the protection capability of the mounting assembly 12, and further reducing the maintenance frequency of the motor and improving the service life of the motor. The sealing member in the embodiment is a sealable ring, and can also be a sealing layer structure obtained after sealing glue is coated in the gap between the first mounting hole 241 and the heat dissipation pipe 43. In this embodiment, the specific structure of the sealing member is not uniquely limited.

[0093] The rotor assembly 30 in the embodiment comprises a rotor core 31 and a rotating shaft 32. The rotor core 31 is sleeved on the rotating shaft 32, as shown in Figure 9 The shell 11 comprises 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 side 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 rotationally connected with the first end cover 112 and the second end cover 113, and the rotor core 31 is gap-fitted with the stator assembly 20, so that the rotor core 31 can be rotated relative to the stator assembly 20 under the driving of the rotating shaft 32, and the gap g between the rotor core 31 and the stator assembly 20 can be ventilated, and the inhaled wind can dissipate the heat generated by the rotor core 31 and the stator assembly 20 to the external environment through the second cavity 102.

[0094] In the first direction, the first end cover 112 and the first end plate 123, and the second end cover 113 and the second end plate 124 each have a second mounting gap 114 (as Figure 9The second mounting gap 114 between the first end cover 112 and the first end plate 123 is in communication with the external environment of the base 10, so that the hot air from the first air outlet 242 of the first end plate 123 and the hot air from the heat dissipation pipe 43 can be discharged along the second mounting gap 114 to the external environment of the base 10. The second mounting gap 114 between the second end cover 113 and the second end plate 124 is in communication with the first blowing part 42, so that the first blowing part 42 can blow air to the air duct 103 and blow air to the heat dissipation pipe 43 along the first air outlet 242 on the second end plate 124. In 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 side wall of the mounting cylinder 111 and is detachably connected with the first end plate 123, and the side of the second end cover 113 away from the rotating shaft 32 protrudes from the outer side wall of the mounting cylinder 111 and is detachably connected with the second end plate 124. Specifically, as shown in Figure 10 and Figure 11 The first end cover 112 and the first end plate 123 can be connected together by connecting holes 243 provided on both of them and connected by connecting members such as bolts, screws, etc. The second end cover 113 and the second end plate 124 can also be connected together by connecting holes 243 provided on both of them and connected by connecting members such as bolts, screws, etc. The assembly and disassembly are simple and convenient.

[0095] Therefore, before the shell 11 is assembled by the mounting cylinder 111, the first end plate 123 and the second end plate 124 can be sleeved on the opposite sides of the mounting cylinder 111 in the first direction. When the first end cover 112 is installed and covers the mounting cylinder 111, the part of the first end cover 112 protruding from the outer side wall of the mounting cylinder 111 is detachably connected with the first end plate 123, and when the second end cover 113 is installed and covers the mounting cylinder 111, the part of the second end cover 113 protruding from the outer side wall of the mounting cylinder 111 is detachably connected with the second end plate 124. This not only facilitates the disassembly of the first end cover 112 and the second end cover 113 for maintenance and repair of 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 shell 11 more stable and reliable.

[0096] The mounting cylinder 111 in the embodiment can be one of a cylindrical cylinder, a square cylinder 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-loop hollow plate structures matched with the mounting cylinder 111. The cover body 122 can be a plurality of cover plates capable of covering adjacent two wind baffles. The cover body 122 is preferably a closed-loop cover ring to cover the plurality of first wind baffles 121 simultaneously 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 determined according to 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, thereby improving the compactness and reliability of the overall structure of the motor.

[0097] Please refer to Figure 12 In the embodiment, a plurality of through holes 131 and a plurality of second ventilation holes 132 are arranged on the first end cover 112 and the second end cover 113. 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 in communication with the outside environment of the heat dissipation pipe 43 and the machine base 10, so that the first end cover 112 does not hinder the hot air from being discharged to the outside environment. The hot air from the heat dissipation pipe 43 and the ventilation channel 103 can be dissipated to the outside 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 in communication with the first blowing component 42 and the heat dissipation pipe 43, so that the air blown by 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. The first blowing component 42 is in communication with the second ventilation holes 132 on the second end cover 113, so that the air blown by the first blowing component 42 can be blown into the ventilation channel 103 along the second ventilation holes 132, the second mounting gap 114, and the first ventilation holes 242 in sequence. Thus, the embodiment ensures that the first blowing component 42 can blow air into the heat dissipation pipe 43 and the ventilation channel 103 by arranging the through holes 131 and the second ventilation holes 132 on the first end cover 112 and the second end cover 113. The hot air from the heat dissipation pipe 43 and the ventilation channel 103 can be blown to the outside environment, thereby effectively reducing the temperature rise in the motor, ensuring the thermal stability and safety of the internal components of the motor, improving the heat dissipation effect, and making the structure of the machine base 10 more compact and reliable.

[0098] The opposite ends of the rotating shaft 32 extend to the outside of the first cavity 101. Please refer to Figure 1 The first blowing component 42 in the embodiment includes a wind guide cover 421 and a first fan 422. The wind guide cover 421 is installed on one side of the machine base 10 close to the second end cover 113 and covers the second mounting gap 114 between the second end cover 113 and the second end plate 124 (as shown in Figure 9As shown, an air guide channel 211 is provided inside 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 mounting gap 114. The end of the rotating shaft 32 near the air guide cover 421 is located inside the air guide channel 211. The first fan 422 is located inside the air guide channel 211 and connected to the rotating shaft 32. Thus, in this embodiment, the air generated by the rotation of the second fan 442 is transported towards the second end cover 113 through the air guide channel 211 inside the air guide cover 421, so that the air can be blown into the heat sink 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 mounting gap 114 between the second end cover 113 and the second end plate 124, it can also prevent the air from being lost from the second mounting gap 114, improve the constantness of the air volume entering the heat sink 43 and the ventilation duct 103 along the second mounting gap 114, and further improve the heat dissipation effect of the motor.

[0099] In this embodiment, the second cavity 102 can be a ventilation box mounted on the housing 11 and located on at least one side of the ventilation duct 103. To improve the assembly efficiency of the second cavity 102, the second cavity 102 in this embodiment can be obtained using a cover 122 and a first baffle plate 121. Specifically, in this embodiment, the cover 122, together with at least two adjacent first baffle plates 121 and the housing 11, forms 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. The adjacent ventilation ducts 103 and the second space can be separated by one or more first baffle plates 121, preferably by one first baffle plate 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 ducts 103 and the second cavities 102 each include multiple (e.g., four each). Along the rotation direction of the rotor assembly 30, the multiple ventilation ducts 103 and the multiple second cavities 102 are arranged around the housing 11, and the second cavities 102 are located between two adjacent ventilation ducts 103, so that the motor can be cooled simultaneously by the heat dissipation fins 41 in the multiple ventilation ducts 103, the second cavities 102, and the heat dissipation pipes 43, so that the motor can be cooled more effectively.

[0100] The housing 11 has a first opening 115 and a second opening 116 on its side wall near the second cavity 102. The mounting assembly 12 also includes a second baffle 125 (e.g., Figures 3 to 4 as well as Figure 7As shown, the second wind deflector 125 includes at least two pieces. At least two second wind deflectors 125 are spaced apart on the housing 11 along a first direction and located within a second space. The inner wall of the second space and the at least two second wind deflectors 125 enclose a second cavity 102. A first opening 115 and a second opening 116 are spaced apart along the first direction and communicate with the second cavity 102 respectively. Therefore, in this embodiment, only at least two second wind deflectors 125 need to be added between at least two adjacent first wind deflectors 121 to assemble the corresponding second cavity 102, resulting in efficient and convenient assembly at low cost. Specifically, each second cavity 102 is formed by two second baffle plates 125 spaced apart along the first direction and the inner wall of the second space. If four second cavities 102 are provided on the outside of the base 10 along the rotation direction of the rotor assembly 30, then there will be four second baffle plates 125 constituting the four second cavities 102. The number of second cavities 102 can also be three, five, six, seven, etc., depending on the heat dissipation requirements of the motor. In this embodiment, the number of second cavities 102 is not uniquely limited, and the number of second baffle plates 125 can be determined according to the number of second cavities 102.

[0101] like Figure 12 As shown, the second baffle plate 125 is provided with a plurality of third mounting holes 251 at intervals. The heat dissipation pipe 43 also includes a second heat dissipation pipe 432, which comprises multiple pipes that penetrate the second cavity 102. Each pipe is correspondingly positioned to one of the third mounting holes 251 and connects to the second baffle plate 125. Hot air entering the second cavity 102 travels between the second heat dissipation pipes 432 for heat exchange, discharging the heat circulating inside the motor to the atmosphere. This achieves heat conversion and discharge within the motor, ensuring the relative temperature stability of the stator assembly 20 and rotor assembly 30, and guaranteeing the thermal stability and safety of the motor's internal components. Therefore, in this embodiment, multiple second heat dissipation pipes 432 are inserted into the second cavity 102, increasing the heat exchange area and capacity when the motor dissipates heat through the second cavity 102. Furthermore, the second baffle plate 125 can also support and fix the second heat dissipation pipe 432, thereby improving the stability of the second heat dissipation pipe 432.

[0102] Because the heat dissipation pipe 43 is relatively long, to prevent vibration or loosening of the heat dissipation pipe 43, the mounting assembly 12 in this embodiment also includes a support member. At least one of the ventilation duct 103 and the second cavity 102 is provided with a support member. 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 ring-shaped support plate 126 adapted to the shell, combined with... Figure 7 andFigure 9 It can be seen that the support plate 126 is sleeved on the shell 11 and located between two adjacent second windbreak plates 125. For example... Figure 13 As shown, the support plate 126 is circumferentially spaced with a plurality of fourth mounting holes 261 and a plurality of clearance holes 262, and there is at least one fourth mounting hole 261 between two adjacent clearance holes 262. The plurality of fourth mounting holes 261 are arranged one-to-one with a plurality of heat dissipation pipes 43 so that the heat dissipation pipes 43 pass through the fourth mounting holes 261 and connect to the support plate 126. The clearance holes 262 in the ventilation duct 103 of the support plate 126 allow the heat dissipation ribs 41 to pass through and are clearance-fitted with the heat dissipation ribs 41, so that air can be blown from the gap between the heat dissipation ribs 41 and the clearance holes 262 to the external environment of the base 10. The clearance holes 262 in the second cavity 102 of the support plate 126 allow airflow in the internal air duct to pass through. Thus, the support plate 126 supports the middle of the plurality of heat dissipation pipes 43, improving the stability and firmness of the plurality of heat dissipation pipes 43. Moreover, the clearance holes 262 provided on the support plate 126 do not affect the installation of the heat dissipation ribs 41 or the passage of air.

[0103] A third mounting gap 412 exists between the side of the heat dissipation rib 41 away from the housing 11 and the inner wall of the cover 122. The height of the heat dissipation rib 41 protruding from the outer wall of the housing 11 is H (i.e., this height is the radial height dimension of the heat dissipation rib 41 along the rotation axis 32). To enhance the heat dissipation effect of the heat dissipation rib 41, the third mounting gap 412 between the top of the heat dissipation rib 41 and the cover 122 along the radial direction of the rotation axis 32 should theoretically be as small as possible. On the one hand, the higher the protrusion height of the heat dissipation rib 41 along the radial direction of the rotation axis 32, the larger the heat dissipation area and the higher the heat dissipation capacity. On the other hand, if the third mounting gap 412 is too large, the cooling air may move in a curved path, increasing wind friction loss. Therefore, considering both welding and assembly processability and the need to obtain better heat dissipation effect, this embodiment preferably has a third mounting gap 412 of no more than 10%H. In this case, the cooling air is basically confined to the wedge-shaped space between the heat dissipation rib 41 and the heat dissipation rib 41 and the first baffle plate 121, which can better balance 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 122 contacts the heat dissipation fin 41, and the cooling air is completely confined to the wedge-shaped space between the heat dissipation fin 41 and the heat dissipation fin 41 and the first baffle plate 121.

[0104] Please see Figure 14The heat dissipation ribs 41 in the embodiment are provided with flow guide grooves 410 extending along the first direction from one end of the heat dissipation rib 41 to the other end. The flow guide grooves 410 in the 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 wind amount received by each part of the heat dissipation rib 41 along the length direction of the heat dissipation rib 41 is greater and more balanced, thereby improving the heat dissipation effect of the heat dissipation rib 41. Secondly, in the case of limited volume of the heat dissipation rib 41, the flow guide grooves 410 can also increase the heat dissipation area of the heat dissipation rib 41, thereby improving the heat exchange area and heat exchange efficiency of the heat dissipation rib 41, and further greatly improving the heat dissipation efficiency of the motor. And / or, the flow guide grooves 410 in the embodiment include at least two, along the rotation direction of the rotor assembly 30, the at least two flow guide grooves 410 are respectively located on the opposite sides of the heat dissipation rib 41 (as shown in Figure 14 the drawings), and the flow guide grooves 410 on the opposite sides of the heat dissipation rib 41 are arranged in a staggered manner in the direction away from the housing 11, thereby improving the heat dissipation effect of the heat dissipation rib 41 through the at least two flow guide grooves 410 while ensuring the structural strength of the heat dissipation rib 41. The number of flow guide grooves 410 in the embodiment can include one of two, three, four, five, six, seven, eight, etc., and can also be other numbers not less than two, thereby improving the heat dissipation effect of the heat dissipation rib 41 through the at least two flow guide grooves.

[0105] In the embodiment, the wall plate of at least one of the ventilation channel 103 and the second cavity 102 is provided with a containing cavity. 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 assembly provided by the embodiment further includes a phase change heat absorption body installed in the containing cavity. The phase change heat absorption body is a device that absorbs heat through the phase change process of a material. The phase change material absorbs heat during the phase change process, such as the transition from solid to liquid or from liquid to gas. The embodiment utilizes this feature of the phase change heat absorption body to absorb the heat generated by the motor, that is, to achieve active heat absorption of the motor through the phase change heat absorption body. Therefore, the embodiment can dissipate the heat generated by the motor to the external environment through the heat dissipation ribs 41 and the heat dissipation pipes 43 in the second cavity 102 and the ventilation channel 103, and also absorb part of the heat through the phase change heat absorption body, so that the heat dissipation effect of the motor reaches a better state.

[0106] Specifically, in the embodiment, preferably, the wall plate of the ventilation channel 103 and the second cavity 102 are provided with a containing cavity in which a phase change heat-absorbing body is arranged, so that the heat dissipation effect of the motor is greatly improved. Since the wall plate of the ventilation channel 103 mainly includes the shell 11, the first baffle 121 and the cover 122, in the embodiment, the containing cavity can be arranged in at least one of the shell 11, the first baffle 121 and the cover 122, and the phase change heat-absorbing body is arranged in the containing cavity. Similarly, since the wall plate of the second cavity 102 includes the shell 11, the first baffle 121, the cover 122 and the second baffle 125, in the embodiment, the containing cavity can be arranged in at least one of the shell 11, the first baffle 121, the cover 122 and the second baffle 125, and the phase change heat-absorbing body is arranged in the containing cavity. In order to facilitate the installation of the phase change heat-absorbing body, in the embodiment, a containing groove can be first formed on the corresponding wall plate, and then the phase change heat-absorbing body is arranged in the containing groove, and then a cover matched with the containing groove is used to cover the phase change heat-absorbing body. In addition, in the embodiment, the corresponding wall plate can be provided as a plate body structure which is buckled with another plate body, at least one side of one of the two plate bodies is provided with a containing groove, and then the phase change heat-absorbing body is arranged in the containing groove, and then the two plate bodies are buckled. The phase change heat-absorbing body in the embodiment can include at least one of a crystalline hydrated salt heat-absorbing body (such as calcium chloride hexahydrate), a metal heat-absorbing body, a paraffin heat-absorbing body, an acetic acid heat-absorbing body, a composite phase change heat-absorbing body and a solid-liquid phase change heat-absorbing body.

[0107] The second cavity 102 of the base 10 in the embodiment participating in the internal circulation heat dissipation Figure 2 It is shown that four are uniformly distributed along the circumferential direction of the rotating shaft 32. According to the heat exchange capacity of the motor and the size of the motor, the number of the second cavities 102 can be one of 2, 3, 5 and 6. The number of the second cavities 102 is set according to the limited space of the base 10, so that the motor can reach a larger heat exchange area and the internal and external air passages reach a balance. The number of the heat dissipation ribs 41 in the ventilation channel 103 and the number of the heat dissipation pipes 43 can be reasonably matched according to the heat exchange capacity and efficiency of the internal and external air passages, so that the motor reaches a balance point of high heat exchange efficiency.

[0108] The embodiment improves the heat exchange capacity, balance and efficiency of the internal and external air passages through the second cavity 102, the heat dissipation ribs 41 in the ventilation channel 103 and the heat dissipation pipes 43 penetrating the second cavity 102 and the ventilation channel 103, so that the overall heat exchange efficiency and capacity of the motor are improved, and physical support is provided for the IC411 motor to improve the power level.

[0109] Finally, the motor provided by the embodiment has the following advantages:

[0110] 1. By adding the heat pipe 43 in the second cavity 102 which is relatively closed, the heat transfer channel from the motor to the outside is increased, the heat exchange efficiency and capacity of the internal circulation air path is expanded, the winding temperature rise of the motor is reduced, the power level of the motor is improved, and the physical guarantee for the motor capacity expansion is provided.

[0111] 2. By adding the cover 122 in the external circulation air path, the cooling air between the heat radiating ribs 41 and between the heat radiating ribs 41 and the first baffle 121 is limited in the wedge-shaped space between the heat radiating ribs 41 and between the heat radiating ribs 41 and the first baffle 121, the cooling air volume between the heat radiating ribs 41 is constant from the inlet to the outlet, the heat exchange efficiency and capacity is improved, the winding temperature rise of the motor is reduced, the power level of the motor is improved, and the physical guarantee for the motor capacity expansion is provided.

[0112] 3. By adding the heat pipe 43 between the heat radiating ribs 41 in the external circulation air path, the heat exchange channel of the external circulation air path is increased, the heat exchange area, efficiency and capacity are increased, the winding temperature rise of the motor is reduced, the power level of the motor is improved, and the reliable physical guarantee for the motor capacity expansion is further provided.

[0113] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An electric motor, characterized in that, include: A base (10) is provided with a first cavity (101), a second cavity (102) and a ventilation duct (103). 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 both isolated from the ventilation duct (103). Stator assembly (20), the stator assembly (20) is installed in the first cavity (101); Rotor assembly (30), which is rotatably connected to the frame (10) and clearance-fitted with the stator assembly (20); The heat dissipation assembly (40) includes a heat sink, a first air blowing component (42) and a second air blowing component (44). The heat sink is installed in the ventilation duct (103). The first air 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 air blowing component (42). The second air blowing component (44) is connected to the rotor assembly (30) and located in the first cavity (101). The base (10) includes a housing (11) and a mounting assembly (12). The first cavity (101) is disposed inside the housing (11). The mounting assembly (12) is connected to the outer wall of the housing (11) and surrounds the outer wall of the housing (11) to form the second cavity (102) and the ventilation duct (103). The heat sink protrudes from the outer wall of the housing (11) away from the first cavity (101) and is located inside the ventilation duct (103). The heat dissipation component includes multiple heat dissipation ribs (41), the length of which extends along a first direction. The mounting assembly (12) includes a first baffle plate (121) and a cover (122). The first baffle plate (121) includes at least two pieces. Along the rotation direction of the rotor assembly (30), at least two first baffle plates (121) are spaced apart on the housing (11). The cover (122) covers the side of the at least two first baffle plates (121) away from the housing (11). The first space formed by the cover (122), the at least two adjacent first baffle plates (121), and the housing (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). Along the rotation direction of the rotor assembly (30), multiple heat dissipation ribs (41) are spaced apart within the ventilation duct (103). The first air blowing component (42) is installed on one side of the housing (11) along the first direction. The heat dissipation assembly (40) also includes a heat dissipation pipe (43). The heat dissipation pipe (43) is provided through the second cavity (102) and the ventilation channel (103). The end of the heat dissipation pipe (43) near the first air blowing component (42) is connected to the first air blowing component (42).

2. The motor according to claim 1, characterized in that, The heat pipe (43) includes: The first heat dissipation pipe (431) includes multiple pipes, which are spaced apart and pass through the ventilation duct (103). At least one first heat dissipation pipe (431) is located between two adjacent heat dissipation ribs (41), and / or, at least one first heat dissipation pipe (431) is located between the heat dissipation ribs (41) and the first wind deflector (121); and / or, there are multiple first heat dissipation pipes (431) between two adjacent heat dissipation ribs (41), and the multiple first heat dissipation pipes (431) are arranged sequentially at intervals in a direction away from the housing (11).

3. The motor according to claim 1, characterized in that, The installation component (12) also includes: The first end plate (123) is installed on the side of the housing (11) away from the first blowing component (42) along the first direction and covers the opening formed by the cover (122) and the first baffle plate (121); The second end plate (124) is installed on the side of the housing (11) along the first direction close to the first blowing component (42) and covers the opening formed by the cover (122) and the first baffle plate (121); The first end plate (123) and the second end plate (124) are each 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) pass through the first mounting holes (241) and are connected to the first end plate (123) and the second end plate (124). Multiple first ventilation holes (242) are provided in a one-to-one correspondence with multiple heat dissipation fins (41). The first ventilation holes (242) of the first end plate (123) are connected to the external environment of the base (10), and the first ventilation holes (242) of the second end plate (124) are connected to the first air blowing component (42).

4. The motor according to claim 3, characterized in that, Along a first direction, the heat dissipation fin (41) has a first mounting gap (411) with at least one of the first end plate (123) and the second end plate (124); and / or, the mounting assembly (12) further includes: A sealing element is embedded in the gap between the first mounting hole (241) and the heat dissipation pipe (43).

5. The motor according to claim 3, characterized in that, The rotor assembly (30) includes a rotor core (31) and a shaft (32), the rotor core (31) being sleeved on the shaft (32), and the housing (11) including: Mounting cylinder (111), the stator assembly (20) is installed inside 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); A first end cap (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 cap (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 cap (112), and the second end cap (113) form the first cavity (101). The rotating shaft (32) is rotatably connected to the first end cap (112) and the second end cap (113) and makes the rotor core (31) clearance-fitted with the stator assembly (20). Along the first direction, there is a second mounting 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 mounting gap (114) between the first end cover (112) and the first end plate (123) communicates with the external environment of the base (10). The second mounting gap (114) between the second end cover (113) and the second end plate (124) communicates with the first blower (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 mounting cylinder (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 mounting cylinder (111) and is detachably connected to the second end plate (124).

6. The motor according to claim 5, characterized in that, Both the first end cap (112) and the second end cap (113) are provided with a plurality of through holes (131) and a plurality of second ventilation holes (132). The plurality of through holes (131) are provided one-to-one with the plurality of first mounting holes (241). The through holes (131) on the first end cap (112) are connected to the external environment of the heat sink (43) and the base (10). The through holes (131) on the second end cap (113) are connected to the first air blowing component (42) and the heat sink (43). The plurality of second ventilation holes (132) are provided one-to-one with the plurality of first ventilation holes (242). The first air blowing component (42) is connected to the second ventilation holes (132) on the second end cap (113).

7. The motor according to claim 6, characterized in that, Both ends of the rotating shaft (32) extend outside the first cavity (101), and the first blowing component (42) includes: An air guide shroud (421) is installed on the side of the base (10) near the second end cover (113) and covers the second mounting gap (114) between the second end cover (113) and the second end plate (124). An air guide channel (211) is provided inside the air guide shroud (421). The second ventilation hole (132) on the second end cover (113) and the through hole (131) are connected to the air guide channel (211) and the second mounting gap (114). One end of the rotating shaft (32) near the air guide shroud (421) is located inside the air guide channel (211). The first fan (422) is located inside the air guide channel (211) and connected to the rotating shaft (32).

8. The motor according to any one of claims 1 to 7, characterized in that, The cover (122) also forms a second space with at least two adjacent first baffles (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). The housing (11) has a first opening (115) and a second opening (116) on its side wall near the second cavity (102). The mounting assembly (12) further includes: The second wind deflector (125) includes at least two pieces. The at least two pieces of the second wind deflector (125) are installed at intervals along the first direction on the housing (11) and located in the second space. The inner sidewall of the second space and the at least two pieces of the second wind deflector (125) form the second cavity (102). The first opening (115) and the second opening (116) are spaced apart along the first direction and communicate with the second cavity (102) respectively.

9. The motor according to claim 8, characterized in that, The second baffle plate (125) is provided with a plurality of third mounting holes (251) spaced apart, and the heat dissipation pipe (43) further includes: The second heat dissipation pipe (432) includes multiple pipes, which penetrate the second cavity (102). The multiple second heat dissipation pipes (432) are arranged one-to-one with the multiple third mounting holes (251) and are connected to the second baffle plate (125) through the third mounting holes (251).

10. The motor according to any one of claims 1 to 7, characterized in that, The installation component (12) also includes: A support member is provided within at least one of the ventilation duct (103) and the second cavity (102), the support member being used to support the heat dissipation pipe (43); and / or, The heat dissipation rib (41) has a third installation gap (412) between the side away from the housing (11) and the inner wall of the cover (122), the height of the heat dissipation rib (41) protruding from the outer wall of the housing (11) is H, and the third installation gap (412) is not greater than 10%H.

11. The motor according to any one of claims 1 to 7, characterized in that, The heat dissipation fin (41) is provided with a flow guide groove (410). Along the first direction, the flow guide groove (410) extends from one end of the heat dissipation fin (41) to the other end, and / or, the flow guide groove (410) includes at least two. Along the rotation direction of the rotor assembly, at least two flow guide grooves (410) are respectively located on opposite sides of the heat dissipation fin (41), and the flow guide grooves (410) on opposite sides of the heat dissipation fin (41) are staggered in a direction away from the housing (11).

12. The motor according to any one of claims 1 to 7, characterized in that, A receiving cavity is provided within the wall panel of at least one of the ventilation duct (103) and the second cavity (102), and the heat dissipation assembly further includes: A phase change heat absorber is installed inside the accommodating cavity.

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