Heat dissipation shell and motor

Abstract

The utility model relates to the technical field of motors, in particular to a heat dissipation shell and a motor, the heat dissipation shell comprises an end cover part and a side wall part surrounding the end cover part, the side wall part and the end cover part are encircled to form an accommodating cavity, the side wall part is provided with a plurality of groups of heat dissipation channels, and the heat dissipation channels are communicated with the accommodating cavity and the outside. The heat dissipation channels are arranged on the side wall part in a sectional mode, the heat dissipation channels extend to the end cover part, the side wall part comprises a plurality of supporting columns, and the supporting columns are located between every two adjacent heat dissipation channels and used for reinforcing the structure of the side wall part. And heat generated by high-speed rotation of the rotor and the stator in the motor is more effectively conducted to the outside, so that the heat dissipation efficiency is remarkably improved, and the heat dissipation requirement of the high-power-density motor is met.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a heat dissipation housing and a motor. Background Technology

[0002] During motor operation, the high-speed rotation of the rotor and stator generates a large amount of heat due to electromagnetic losses and mechanical friction. Traditional motor housings rely on passive heat dissipation methods such as natural convection and surface cooling fins, which are limited by the thermal conductivity of materials and spatial layout, making it difficult to meet the heat dissipation requirements of high-power-density motors. As motors develop towards miniaturization and high efficiency, the problem of internal heat accumulation is becoming increasingly prominent. Sustained high temperatures not only lead to performance degradation such as demagnetization of permanent magnets and aging of insulation materials, but also cause malfunctions such as uneven air gaps, increased vibration and noise, and even mechanical jamming due to thermal deformation, seriously restricting the reliability and service life of motors. Utility Model Content

[0003] The purpose of this invention is to provide a heat dissipation housing to solve the problem of poor heat dissipation in motors in the prior art.

[0004] The technical solution of this utility model is: a heat dissipation housing and a motor, including: an end cover and a side wall surrounding the end cover, the side wall and the end cover together forming a receiving cavity, the side wall having multiple sets of heat dissipation channels, the heat dissipation channels connecting the receiving cavity and the outside, the heat dissipation channels being arranged in segments on the side wall, the heat dissipation channels extending to the end cover, the side wall including multiple pillars, the pillars being located between two adjacent heat dissipation channels, for strengthening the structure of the side wall.

[0005] Preferably, the heat dissipation channel includes a plurality of heat dissipation slots, which are evenly distributed circumferentially along the side wall portion, and the heat dissipation slots are elongated strips extending toward the end cap portion.

[0006] Preferably, the end cap portion is configured as a plane, the end cap portion has a first through hole, and the end cap portion is fixed with a sleeve extending toward the receiving cavity, the hollow sleeve communicating with the first through hole.

[0007] Preferably, at least one of the support columns has a cable tray fixed to its inner wall, the cable tray having a cable tray groove extending through the side wall of the support column, and the support column having a cable tray hole communicating with the cable tray groove.

[0008] Preferably, the inner wall of the support column on which the cable tray is fixed is recessed with a relief groove, the cable tray is fixed in the relief groove, and the cable tray is flush with the inner wall of the side wall portion.

[0009] This application also provides an electric motor, including a heat sink housing.

[0010] Preferably, it further includes a rotor and a stator, the stator being fixedly disposed within the receiving cavity of the heat dissipation housing, and the rotor rotating relative to the stator within the receiving cavity.

[0011] Preferably, the heat dissipation housing is fixedly provided with an outer shell, the outer shell and the heat dissipation housing together enclose the receiving cavity, and the stator is fixedly connected to the outer shell.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] (1) The heat dissipation channel is segmented and arranged on the side wall and extends to the end cover, connecting the cavity and the outside. This increases the heat exchange path between the motor and the outside, and more effectively conducts the heat generated by the high-speed rotation of the rotor and stator inside the motor to the outside, significantly improving the heat dissipation efficiency and meeting the heat dissipation requirements of high power density motors. It also reduces the internal temperature of the motor, avoids the permanent magnet from demagnetizing due to high temperature, ensures the stability of the magnetic field strength and output performance of the motor, reduces the risk of thermal deformation, reduces the problem of uneven air gap caused by thermal deformation, ensures the uniform air gap between the motor rotor and stator, and maintains the stable operation of the motor.

[0014] (2) The segmented heat dissipation channel can more comprehensively cover the side wall and end cover, increase the heat dissipation area, greatly expand the heat dissipation coverage, and thus significantly increase the contact area between the heat dissipation channel and the outside air, making the heat dissipation of each part of the motor more balanced, and improving the uniformity and effectiveness of heat dissipation.

[0015] (3) Multiple support columns are set on the side wall between two adjacent heat dissipation channels. While ensuring heat dissipation, the structural strength of the side wall is strengthened, making the motor housing more stable and reliable when subjected to various forces and vibrations during motor operation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of a heat dissipation shell according to the present invention;

[0018] Figure 2 This is a cross-sectional view of a heat dissipation housing assembled with a motor according to the present invention.

[0019] Figure 3 This is a schematic diagram of the wiring connector described in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of an electric motor according to the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. End cap; 11. First through hole; 12. Sleeve; 2. Side wall; 21. Heat dissipation channel; 211. Heat dissipation groove; 22. Support column; 23. Relief groove; 24. Wiring hole; 3. Receiving cavity; 4. Wiring base; 41. Wiring groove; 51. Rotor; 52. Stator; 53. Housing; 54. Sealing plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 1 As shown, a heat dissipation housing includes an end cover portion 1 and a side wall portion 2 surrounding the end cover portion 1. The side wall portion 2 and the end cover portion 1 together form a receiving cavity 3. The side wall portion 2 has multiple sets of heat dissipation channels 21, which connect the receiving cavity 3 to the outside. The heat dissipation channels 21 are arranged in segments on the side wall portion 2, forming a multi-path airflow circulation, effectively guiding hot air from the inside of the motor to the outside. The heat dissipation channels 21 extend to the end cover portion 1, realizing three-dimensional heat dissipation of the motor in both axial and radial directions. The side wall portion 2 includes multiple support pillars 22, which are located between two adjacent heat dissipation channels 21. The structure of the support pillars 22 ensures strength while creating a reasonable spacing between the heat dissipation channels 21. The heat dissipation housing prevents localized overheating of the motor and promotes overall temperature uniformity of the motor.

[0027] The end cap 1 is constructed as a shallow, disc-shaped cap, and the side wall 2 is constructed as a hollow cylinder with a certain thickness. The side wall 2 is fixedly connected to one end face of the end cap 1, forming a cylindrical receiving cavity 3. Preferably, the side wall 2 and the end cap 1 have a rounded transition at the connection point. The end cap 1 has a first through hole 11, and a sleeve 12 extending toward the receiving cavity 3 is fixedly mounted on the end cap 1. The hollow sleeve 12 communicates with the first through hole 11.

[0028] It is worth noting that the above-mentioned "segmented layout of heat dissipation channel 21" means that the heat dissipation channel 21 is arranged intermittently on the side wall 2, and adjacent channels are separated by a solid structure. Each heat dissipation channel 21 forms an independent airflow inlet or outlet, so that the air flows in multiple directions inside the motor, rather than a straight flow in a single direction.

[0029] Specifically, the heat dissipation channel 21 includes multiple heat dissipation slots 211, each of which is a through slot connecting the receiving cavity 3 to the outside. These slots are evenly distributed circumferentially along the sidewall portion 2, forming a symmetrical heat dissipation layout. This ensures that heat inside the motor is evenly dissipated, preventing localized overheating. The heat dissipation slots 211 are elongated strips extending towards the end cover portion 1, meaning their longitudinal length is greater than their transverse width, significantly increasing air exchange. In this embodiment, the heat dissipation slots 211 extend to the bend between the end cover portion 1 and the sidewall portion 2. While ensuring the end cover portion 1 is covered, this increases the heat dissipation area and allows airflow in an inclined direction while dissipating heat to the side, further improving the heat dissipation effect. In other embodiments, the heat dissipation slots 211 extend towards the center of the end cover portion 1. The heat dissipation slots 211 are divided into multiple segments along the end cover portion 1, allowing simultaneous use of axial and radial airflow to form a three-dimensional heat dissipation network. Compared to a single-direction heat dissipation slot 211, this composite path can more efficiently remove heat from high-heat areas such as the stator 52 windings and the rotor 51 end. The segmented groove body compensates for the stiffness loss caused by the slotting to meet the deformation resistance requirements.

[0030] like Figure 2 and 3 As shown, at least one support column 22 has a cable tray 4 fixed to its inner wall. The cable tray 4 has a cable tray 41 extending through the side wall 2 facing the support column 22. The support column 22 has a cable tray hole 24 communicating with the cable tray 41. Through the cable tray 41 and the cable tray hole 24 of the cable tray 4, the power lines and signal lines (such as temperature sensor lines and encoder lines) inside the motor can be centrally fixed, preventing the cables from getting tangled in the rotor 51 or the heat dissipation channel 21, reducing the risk of short circuits, and at the same time preventing the lines from blocking the heat dissipation channel 21 to keep the airflow unobstructed and ensure that the heat dissipation efficiency is not reduced. Preferably, the longitudinal dimension of the support column 22 used for cable routing is larger than the longitudinal dimension of other support columns 22, and only one support column 22 is used for cable routing to group the lines in one place.

[0031] The inner wall of the support column 22 has a recessed relief groove 23. The cable tray 4 is fixed in the relief groove 23. The cable tray 4 is flush with the inner wall of the side wall 2 to avoid forming a protruding structure inside the motor. On the one hand, it ensures that the airflow passes smoothly through the heat dissipation channel 21 to maintain heat dissipation efficiency. On the other hand, it avoids the cable tray 4 occupying the installation space of the rotor 51 or stator 52.

[0032] like Figures 2-4 As shown, this application also provides an electric motor, including a heat dissipation housing, a rotor 51 and a stator 52. The stator 52 is fixedly connected to a receiving cavity 3 inside the heat dissipation housing. The rotor 51 rotates relative to the stator 52 in the receiving cavity 3. The rotor 51 is a circular magnetic ring and is located between the side wall portion 2 and the stator 52.

[0033] Specifically, the heat dissipation housing is fixedly provided with an outer shell 53, which is configured as a disc. The outer shell 53 is fixedly connected to the side wall portion 2 away from the end cover portion 1. The outer shell 53 and the heat dissipation housing enclose the receiving cavity 3. The stator 52 is fixedly connected to the outer shell 53, that is, the stator 52 is fixedly connected to the receiving cavity 3 through the outer shell 53.

[0034] A sealing plate 54 is detachably connected to the first through hole 11 of the end cap 1. The sealing plate 54 is used to close the first through hole 11 to facilitate internal inspection and debugging. In this embodiment, the sealing plate 54 is threaded to the end cap 1. In other embodiments, the sealing plate 54 is connected to the end cap 1 by a quick-release pin.

[0035] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A heat dissipation housing, characterized in that, include: The end cap (1) and the side wall (2) surrounding the end cap (1) together form a receiving cavity (3). The side wall (2) has multiple sets of heat dissipation channels (21) that connect the receiving cavity (3) to the outside. The heat dissipation channels (21) are arranged in segments on the side wall (2) and extend to the end cap (1). The side wall (2) includes multiple support pillars (22) located between two adjacent heat dissipation channels (21) to strengthen the structure of the side wall (2).

2. The heat dissipation housing according to claim 1, characterized in that: The heat dissipation channel (21) includes a plurality of heat dissipation grooves (211), which are evenly distributed along the circumference of the side wall portion (2). The heat dissipation grooves (211) are elongated strips extending toward the end cap portion (1).

3. The heat dissipation housing according to claim 2, characterized in that: The end cap (1) is constructed as a plane, and the end cap (1) has a first through hole (11). The end cap (1) is fixed with a sleeve (12) extending toward the receiving cavity (3), and the hollow sleeve (12) communicates with the first through hole (11).

4. A heat dissipation housing according to claim 2, characterized in that: At least one of the support pillars (22) has a cable tray (4) fixedly provided on its inner wall. The cable tray (4) has a cable tray (41) extending through the side wall portion (2) on the side facing the support pillar (22). The support pillar (22) has a cable tray (24) communicating with the cable tray (41).

5. A heat dissipation housing according to claim 4, characterized in that: The inner wall of the support column (22) on which the cable tray (4) is fixed is recessed with a relief groove (23), the cable tray (4) is fixed in the relief groove (23), and the cable tray (4) is flush with the inner wall of the side wall (2).

6. An electric motor, characterized in that, Includes a heat dissipation housing as described in any one of claims 1-5.

7. The motor according to claim 6, characterized in that: It also includes a rotor (51) and a stator (52), the stator (52) being fixed in the receiving cavity (3) of the heat dissipation housing, and the rotor (51) rotating relative to the stator (52) in the receiving cavity (3).

8. The motor according to claim 7, characterized in that: The heat dissipation housing is fixedly provided with an outer shell (53), and the outer shell (53) and the heat dissipation housing together enclose the receiving cavity (3), and the stator (52) is fixedly connected to the outer shell (53).

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