Heat dissipation end cover and motor

Abstract

The invention discloses a heat dissipation end cover and a motor, the heat dissipation end cover is applied to the motor, the motor comprises a stator assembly and a bearing, the heat dissipation end cover comprises an end cover body, and the end face, close to the stator assembly, of the end cover body is a plane; the bearing chamber is arranged on the end cover body and used for arranging the bearing, and the bearing chamber protrudes outwards in the direction away from the stator assembly relative to the end cover body. According to the embodiment of the invention, the bearing chamber of the heat dissipation end cover is designed to be of a structure protruding outwards in the direction away from the stator assembly, so that the bearing chamber is exposed in the outside air, the heat dissipation area of the bearing chamber is increased, and the temperature of the bearing can be effectively reduced; and the end face, close to the stator assembly, of the end cover body is a plane, so that the overall structure of the heat dissipation end cover is lighter, materials are saved, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a heat dissipation end cover and a motor. Background Art

[0002] As the power source of most mechanical equipment, motors play a vital role in the transmission of various mechanisms. At present, motors are used in more and more high-temperature places. Therefore, motors will run at high temperatures for a long time. Due to the large stator and rotor losses of high-power motors, the rotor losses are transmitted to the bearings at both ends through the rotor shaft, causing serious heating of the bearings. In particular, the front cover is directly connected to the load equipment, and the air circulation is poor, resulting in high bearing temperatures. The high bearing temperature cannot be effectively dissipated, which seriously affects the life of the bearing and the reliability of the motor operation.

[0003] In the prior art, in a conventional heat dissipation end cover, the bearing chamber is arranged in the direction of the end cover body toward the stator assembly, that is, arranged inwardly of the end cover body, in a closed space formed by the end cover body and the stator assembly, which leads to heat dissipation difficulties and serious heating of the bearing; and the end face of the conventional end cover body in the direction close to the stator assembly is an arc surface, and the design of the arc surface makes the overall structure of the end cover body heavier, requires more materials during processing, and has a higher cost. Summary of the invention

[0004] The purpose of the present invention is to provide a heat dissipation end cover and a motor, aiming to solve the problems in the prior art that the structure of the end cover body leads to heat dissipation difficulties, serious heating of the bearing and high processing costs.

[0005] In order to solve the above technical problems, the purpose of the present invention is achieved through the following technical solutions:

[0006] The present invention provides a heat dissipation end cover, which is applied to a motor. The motor includes a stator assembly and a bearing. The heat dissipation end cover includes:

[0007] An end cover body, wherein the end surface of the end cover body close to the stator assembly is a plane;

[0008] A bearing chamber is arranged on the end cover body and is used to arrange the bearing, and the bearing chamber protrudes outwardly relative to the end cover body in a direction away from the stator assembly.

[0009] Optionally, the heat dissipation end cover further includes heat dissipation fins, and the heat dissipation fins are arranged on an end surface of the end cover body away from the stator assembly.

[0010] Optionally, a plurality of the heat dissipation fins are provided, and the plurality of heat dissipation fins are arranged at intervals along the circumference of the end cover body.

[0011] Optionally, the number of the heat dissipation fins is greater than or equal to 3 and less than or equal to 78.

[0012] Optionally, one end of the heat dissipation fin is connected to the bearing chamber.

[0013] Optionally, the height of the heat dissipating fins is greater than or equal to the protruding height of the bearing chamber.

[0014] Optionally, the heat dissipation fins have a thickness of 3-10 mm.

[0015] Optionally, an end cover stop surface is provided on the outer edge of the end cover body, and the end surface of the end cover body close to the stator assembly is flush with the end cover stop surface.

[0016] Optionally, the heat dissipation end cover further includes an oil seal chamber, which is arranged on the bearing chamber and opposite to the bearing chamber, and is used to place an oil seal.

[0017] The present invention also provides a motor, comprising the heat dissipation end cover as described above.

[0018] The present invention discloses a heat dissipation end cover and a motor. The heat dissipation end cover is applied to a motor, and the motor includes a stator assembly and a bearing, wherein the heat dissipation end cover includes: an end cover body, and the end face of the end cover body close to the stator assembly is a plane; a bearing chamber, which is arranged on the end cover body and used to arrange the bearing, and the bearing chamber protrudes outwardly relative to the end cover body in a direction away from the stator assembly. In the embodiment of the present invention, the bearing chamber of the heat dissipation end cover is designed to protrude outwardly in a direction away from the stator assembly, so that the bearing chamber is exposed to the outside air, the heat dissipation area of ​​the bearing chamber is increased, and the temperature of the bearing can be effectively reduced; and the end face of the end cover body close to the stator assembly is a plane, so that the overall structure of the heat dissipation end cover is lighter, which is conducive to saving materials and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of a heat dissipation end cover provided in an embodiment of the present invention;

[0021] Figure 2 is a schematic cross-sectional structure diagram of a heat dissipation end cover according to an embodiment of the present invention;

[0022] Figure 3A schematic cross-sectional structure diagram of a heat dissipation end cover from another perspective of an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the planar structure of a heat dissipation end cover provided in an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of a heat dissipation end cover when the number n of heat dissipation fins provided in an embodiment of the present invention is 78;

[0025] Figure 6 The figure is a schematic cross-sectional structure diagram of the heat dissipation end cover from another perspective according to the embodiment of the present invention.

[0026] Description of the symbols in the figure:

[0027] 1. heat dissipation end cover; 11. end cover body; 111. end cover stop surface; 12. bearing chamber; 121. shaft hole; 13. heat dissipation fin; 14. oil seal chamber; 15. ear plate; 151. ear hole. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0030] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] See also Figure 1 and Figure 2An embodiment of the present invention provides a heat dissipation end cover 1, which is applied to a motor. The motor includes a stator assembly and a bearing. The heat dissipation end cover 1 includes: an end cover body 11, and the end surface of the end cover body 11 close to the stator assembly is a plane; a bearing chamber 12, which is arranged on the end cover body 11 and is used to set the bearing, and the bearing chamber 12 protrudes outward relative to the end cover body 11 in a direction away from the stator assembly.

[0033] In this embodiment, the bearing chamber 12 of the heat dissipation end cover 1 is designed to protrude outward in a direction away from the stator assembly, so that the bearing chamber 12 is exposed to the outside air, thereby increasing the heat dissipation area of ​​the bearing chamber 12 and effectively reducing the temperature of the bearing; and the end surface of the end cover body 11 close to the stator assembly is flat, so that the end cover body 11 is lighter as a whole, which is conducive to saving materials and reducing costs.

[0034] Specifically, the end face of the end cover body 11 close to the stator assembly is a plane. The flat structure not only facilitates the close fit between the end cover body 11 and the stator assembly or other adjacent components, but also helps to simplify the assembly process and reduce the processing cost of production materials. The main function of the bearing chamber 12 is to carry and fix the bearing. The bearing will generate a certain amount of heat during operation. If the bearing chamber 12 is set close to the stator assembly, the bearing chamber 12 is in the enclosed space formed by the end cover body and the motor housing, which will lead to heat dissipation difficulties, hinder the effective dissipation of heat, and even cause serious heating of the bearing. By protruding the bearing chamber 12 outward, the entire bearing chamber 12 is exposed to the air and in direct contact with the air, so that the heat can be directly dissipated in the air, increasing the air circulation space around the bearing, which is beneficial to the natural convection and radiation heat dissipation of heat, thereby significantly reducing the bearing temperature and improving the operating stability and life of the motor.

[0035] Furthermore, the heat dissipation end cover 1 further includes heat dissipation fins 13, which are arranged on the end surface of the end cover body 11 away from the stator assembly. In this embodiment, the design of the heat dissipation fins 13 further increases the heat dissipation area, which can significantly improve the heat transfer efficiency. The heat dissipation fins 13 can be reasonably arranged and designed in shape, thereby promoting air convection between the fins, helping to take away heat from the fin surface, thereby further reducing the temperature of the bearing.

[0036] Specifically, when the motor is running, the heat generated inside (referring to the spatial area where various heat-generating elements and components inside the motor are located, such as the stator assembly and bearings) will be conducted to the end cover body 11, and then dissipated into the air through the heat dissipation fins 13. Since the heat dissipation fins 13 usually have a larger surface area, they can more effectively exchange heat with the air.

[0037] It should be noted that good contact between the heat dissipation fins 13 and the end cover body 11 can reduce thermal resistance (thermal resistance is one of the important factors affecting heat transfer efficiency) and improve heat transfer efficiency. Therefore, a good connection between the heat dissipation fins 13 and the end cover body 11 is also the key to ensuring efficient heat dissipation. Specifically, by optimizing the material and thickness of the heat dissipation fins 13, the spacing between each heat dissipation fin 13 (if there are multiple heat dissipation fins 13), and the connection method with the end cover body 11, it can be ensured that heat can be quickly and effectively conducted from the inside of the motor to the fin surface and carried away by the surrounding air. In addition to the heat dissipation function, the heat dissipation fins 13 can also enhance the structural strength of the end cover body 11 to a certain extent. In particular, in some occasions where it is necessary to withstand large mechanical stress or impact vibration, the presence of the heat dissipation fins 13 can disperse and relieve these stresses and protect the end cover body 11 from damage.

[0038] In addition, the design of the heat dissipation fins 13 can also take into account the ease of maintenance. Through reasonable layout and appearance design, the heat dissipation end cover 1 can be coordinated with the overall style of the motor to enhance the overall texture of the product. At the same time, the design of the heat dissipation fins 13 should also be easy to clean and maintain to ensure long-term efficient heat dissipation performance.

[0039] Specifically, a plurality of heat dissipation fins 13 are provided, and the plurality of heat dissipation fins 13 are arranged at intervals along the circumference of the end cover body 11. In this embodiment, the plurality of heat dissipation fins 13 are arranged at intervals along the circumference of the end cover body 11, which can significantly increase the heat dissipation area, so that more heat can be dissipated to the surrounding environment by means of heat conduction and convection, thereby improving the heat dissipation efficiency. For example, in this embodiment, the plurality of heat dissipation fins 13 can be in a divergent structure with the center of the bearing chamber 12 as the center of the circle. At the same time, the spacing design of the heat dissipation fins 13 helps to promote the flow of air between the fins. When the air flows through the fins, it will be guided by the shape of the fins to form a certain airflow channel. This airflow channel can accelerate the air flow, improve the heat exchange efficiency, and thus take away more heat.

[0040] It should be noted that the number and spacing of the heat dissipation fins 13 need to be determined according to the specific needs and usage environment of the motor. Generally speaking, the more the number of heat dissipation fins 13 and the smaller the spacing, the larger the heat dissipation area. However, if the number is too large, the two sides of two adjacent heat dissipation fins 13 will overlap, which will reduce the surface area of ​​the heat dissipation fins 13 in contact with the air, reduce the heat dissipation effect, and also increase the manufacturing cost and complexity. Therefore, the number of heat dissipation fins 13 needs to strike a balance between heat dissipation performance and economy.

[0041] In a specific embodiment, Figure 3 and Figure 4 As shown, the number of the heat dissipation fins 13 is greater than or equal to 3 and less than or equal to 78.

[0042] A plurality of heat dissipation fins 13 are evenly distributed on the surface of the end cover body 11 (the end surface away from the stator assembly). The number of heat dissipation fins 13 is set to n, the contact length between the heat dissipation fins 13 and the surface of the end cover body 11 is set to L, the thickness of the heat dissipation fins 13 is set to B, the height of the heat dissipation fins 13 is set to H, the surface area of ​​the heat dissipation fins 13 in contact with the air is S, and the volume of the heat dissipation fins 13 is V. The surface area of ​​the heat dissipation fins 13 in contact with the air S=BL+2HL, and the volume of the heat dissipation fins V=BHL. When the thickness of the heat dissipation fins 13 increases, if other dimensions (the contact length L between the heat dissipation fins 13 and the surface of the end cover body 11 and the height H of the heat dissipation fins 13) remain unchanged, then the surface area of ​​the heat dissipation fins 13 in contact with the air will increase exponentially with the increase in the thickness of the heat dissipation fins 13, and the volume of the heat dissipation fins 13 will also increase exponentially with the increase in the thickness of the heat dissipation fins 13, and the weight of the heat dissipation fins 13 will also increase exponentially.

[0043] Specifically, when the number n of the heat dissipation fins 13 satisfies the condition of 3≤n≤78, the heat dissipation effect is better. Figure 5 , which is a schematic diagram of the structure when the number n of the heat dissipation fins 13 on the heat dissipation end cover 1 is 78. When the number n of the heat dissipation fins 13 is less than 3, the number of the heat dissipation fins 13 is limited, the total surface area of ​​the heat dissipation fins 13 in contact with the air is too small, and the heat dissipation effect is negligible; when the number n of the heat dissipation fins 13 is greater than 78, the number of the heat dissipation fins 13 is too large, resulting in the overlap of the two sides of two adjacent heat dissipation fins 13, which in turn results in a reduction in the surface area of ​​the heat dissipation fins 13 in contact with the air, and the heat dissipation effect is also greatly reduced.

[0044] Furthermore, one end of the heat dissipation fin 13 is connected to the bearing chamber 12. In this embodiment, the heat dissipation fin 13 is connected to the bearing chamber 12 via a connection portion. One end of the heat dissipation fin 13 is directly connected to the bearing chamber 12 via the connection portion. The connection between the bearing chamber 12 and the heat dissipation fin 13 reduces the intermediate link of heat transfer, so that the heat can be transferred from the bearing chamber 12 to the fin more quickly, and quickly dissipated to the surrounding environment through the expansion area of ​​the fin, thereby reducing thermal resistance, thereby improving the heat transfer efficiency, and further improving the running stability and life of the motor.

[0045] It should be noted that when connecting the heat sink fins 13 and the bearing chamber 12, the structural strength should also be considered. The connection between the heat sink fins 13 and the bearing chamber 12 should be able to withstand the vibration and impact generated when the motor is running, ensuring the stability and reliability of the connection. The installation and maintenance of the heat sink fins 13 should also be considered. The connection part can be a detachable connection part that is easy to disassemble and install, so that it can be maintained and replaced when necessary.

[0046] Specifically, the height of the heat dissipation fins 13 is greater than or equal to the protruding height of the bearing chamber 12. In this embodiment, if the height of the heat dissipation fins 13 is less than the protruding height of the bearing chamber 12, the effective heat dissipation area will be reduced, and even heat accumulation will be caused, affecting the performance and life of the motor. Therefore, the height of the heat dissipation fins 13 should be high enough, that is, greater than or equal to the protruding height of the bearing chamber 12, to ensure that the heat dissipation fins 13 can be fully exposed to the air and effectively dissipate heat. In this embodiment, the height of the heat dissipation fins 13 can be set to be the same as the protruding height of the bearing chamber 12, that is, the two are flush in height.

[0047] In a specific embodiment, the thickness of the heat sink 13 is 3-10 mm. The thickness B of the heat sink 13 has a certain influence on the heat dissipation performance. Both too thin heat sink 13 and too thick heat sink 13 will affect the heat dissipation effect of the heat sink 13. Therefore, when the thickness B of the heat sink 13 satisfies the condition of 3mm≤B≤10mm, the heat dissipation effect will be better. Specifically, when B<3mm, the heat sink 13 is too thin, the strength is insufficient, and it is easy to bend and deform. There may be a risk of the heat sink 13 loosening and detaching under high power operation;

[0048] It can be seen from the above-mentioned formula for the surface area of ​​the heat dissipating fins 13 in contact with the air and the formula for the volume of the heat dissipating fins 13 that when the thickness of the heat dissipating fins 13 increases, if other dimensions (the contact length L between the heat dissipating fins 13 and the surface of the end cover body 11 and the height H of the heat dissipating fins 13) remain unchanged, then the surface area of ​​the heat dissipating fins 13 in contact with the air will increase exponentially with the increase in the thickness of the heat dissipating fins 13, and the volume of the heat dissipating fins 13 will also increase exponentially with the increase in the thickness of the heat dissipating fins 13, and the weight of the heat dissipating fins 13 will also increase exponentially. Therefore, when B>10mm, the heat dissipating fins 13 are too thick, the volume is too large, and the heat dissipating fins 13 are too heavy, so there will be a limit on the number of heat dissipating fins 13, which will lead to a decrease in the heat dissipation effect.

[0049] Furthermore, the material of the heat dissipation fins 13 can be aluminum or copper. In this embodiment, in order to further enhance the heat dissipation effect, the material of the heat dissipation fins 13 should have good thermal conductivity and mechanical strength. Metal materials such as aluminum or copper have excellent thermal conductivity and processing performance, which can meet the need for heat dissipation of the end cover body 11.

[0050] Furthermore, the shape design of the heat dissipation fins 13 is also one of the important factors affecting the heat dissipation performance. By optimizing the shape and size of the fins, the speed and efficiency of air flow can be increased, thereby enhancing the heat dissipation effect. For example, the shape of the heat dissipation fins 13 can be rectangular, corrugated or wavy, serrated, or triangular.

[0051] Further, such as Figure 6 As shown, the outer edge of the end cover body 11 is provided with an end cover stop surface 111, and the end surface of the end cover body 11 close to the stator assembly is flush with the end cover stop surface 111. In this embodiment, in mechanical assembly, the end cover stop is the mating surface between the end cover body 11 and the motor base, which is used to accurately position the end cover body 11 and ensure that it is firmly fixed. This design enables the end cover body 11 to quickly and accurately find its correct position during installation, and is fixed by the close fit of the end cover stop surface 111, preventing the end cover body 11 from moving or loosening during the operation of the motor. In addition, the end cover stop can also play a sealing role to prevent impurities such as liquids, gases or dust from entering the interior of the motor and affecting the normal operation of the motor, ensuring the cleanliness and dryness of the internal environment of the motor.

[0052] In this embodiment, the end surface of the end cover body 11 close to the stator assembly is flush with the end cover stop surface 111, which means that they are on the same horizontal plane, making the overall structure of the end cover body 11 lighter, helping to simplify the assembly process and reduce assembly errors caused by unevenness.

[0053] It should be noted that the material of the end cap stopper is usually the same or similar to that of the end cap body 11 to ensure that it has good mechanical properties and processing properties. At the same time, in order to enhance the wear resistance and corrosion resistance of the end cap stopper surface 111, the end cap stopper surface 111 can also be subjected to appropriate surface treatment processes, such as zinc plating, chrome plating, etc.

[0054] Further, such as Figure 1 As shown, the heat dissipation end cover 1 further includes an oil seal chamber 14, which is disposed on the bearing chamber 12 and is disposed away from the bearing chamber 12, and is used to place an oil seal. In this embodiment, the oil seal chamber 14 is disposed on the bearing chamber 12, but is disposed away from the bearing chamber 12, that is, the oil seal chamber 14 is not directly located above or below the bearing chamber 12, but is located on one side or the other side of the bearing chamber 12, so as to provide an independent installation space for the oil seal.

[0055] The main function of the oil seal chamber 14 is to place an oil seal, which is a sealing component used to prevent leakage of lubricating oil or working medium. It is usually installed between the bearing chamber 12 and the external environment to ensure that the bearing and stator assembly and other internal components are well lubricated, while preventing external impurities from entering the motor.

[0056] Furthermore, the heat dissipation end cover 1 further includes an ear plate 15, which is arranged at the outer edge of the end cover body 11, and a plurality of ear plates 15 are arranged. In this embodiment, the ear plate 15 can provide additional support for the heat dissipation end cover 1, increase its overall rigidity, and prevent deformation during installation or operation. The ear plate 15 is provided with an ear hole 151 for locking the heat dissipation end cover 1, and a thread is arranged inside the ear hole 151. Through the thread on the ear plate 15, the heat dissipation end cover 1 can be firmly fixed to the motor housing using fasteners such as fixing bolts. In addition, the ear plate 15 is arranged at the outer edge of the end cover body 11, which helps to disperse the external force (such as the tension of the fixing bolt) to a larger area of ​​the end cover body 11 and reduce local stress concentration. Usually, a plurality of ear plates 15 are arranged to increase stability and provide more connection points. The plurality of ear plates 15 can be evenly distributed on the outer edge of the end cover body 11 to ensure that sufficient support can be provided in all directions.

[0057] It should be noted that the shape of the ear plate 15 can be rectangular, circular or other shapes, and the size can be adjusted according to the force required to be borne and the size of the connecting parts such as the fixing bolts.

[0058] Furthermore, the bearing chamber 12 is provided with an axial hole 121, and the rotating shaft of the motor is arranged in the axial hole 121. The load when the rotating shaft rotates is borne by the bearing installed in the bearing chamber 12, so that the rotating shaft can maintain stable rotation.

[0059] An embodiment of the present invention further provides a motor, comprising the heat dissipation end cover 1 as described in any one of the above items.

[0060] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0061] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive.

[0062] Inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including a..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A heat dissipation end cover, applied to a motor, the motor comprising a stator assembly and a bearing, characterized in that: The heat dissipation end cover comprises: An end cover body, wherein the end surface of the end cover body close to the stator assembly is a plane; A bearing chamber is arranged on the end cover body and is used to arrange the bearing, and the bearing chamber protrudes outwardly relative to the end cover body in a direction away from the stator assembly.

2. The heat dissipation end cap according to claim 1, characterized in that: The heat dissipation end cover also includes heat dissipation fins, and the heat dissipation fins are arranged on the end surface of the end cover body away from the stator assembly.

3. The heat dissipation end cap according to claim 2, characterized in that: A plurality of heat dissipation fins are provided, and the plurality of heat dissipation fins are arranged at intervals along the circumference of the end cover body.

4. The heat dissipation end cap according to claim 3, characterized in that: The number of the heat dissipation fins is greater than or equal to 3 and less than or equal to 78.

5. The heat dissipation end cap according to claim 2, characterized in that: One end of the heat dissipation fin is connected to the bearing chamber.

6. The heat dissipation end cap according to claim 2, characterized in that: The height of the heat dissipation fins is greater than or equal to the protruding height of the bearing chamber.

7. The heat dissipation end cap according to claim 2, characterized in that: The thickness of the heat dissipation fins is 3-10 mm.

8. The heat dissipation end cap according to claim 1, characterized in that: An end cover stop surface is arranged on the outer edge of the end cover body, and the end surface of the end cover body close to the stator assembly is flush with the end cover stop surface.

9. The heat dissipation end cap according to claim 1, characterized in that: The heat dissipation end cover also includes an oil seal chamber, which is arranged on the bearing chamber and is arranged away from the bearing chamber, and the oil seal chamber is used to place an oil seal.

10. A motor, characterized in that: It comprises the heat dissipation end cover as described in any one of claims 1 to 9.

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