Motor stator structure with slots on double end surfaces

Abstract

The utility model relates to the technical field of motors, and discloses a double-end-face slotted motor stator structure which comprises a stator body, the stator body comprises a mounting frame, a stator core and a supporting sleeve, the outer side of the supporting sleeve is fixedly connected to the inner side of the stator core, and the stator core is located in the mounting frame. The outer side of the stator core is provided with a multi-stage heat dissipation assembly. According to the motor stator structure with the grooves in the double end faces, a continuous heat dissipation path from the stator core to the outside is formed through layer-by-layer heat transfer of the heat conduction substrate, the first heat conduction plate and the turbulent flow protruding blocks, the overall heat dissipation efficiency is remarkably improved, then air flow can be gradually accelerated during circulation under the action of the ventilation assembly, and the heat dissipation efficiency is improved. The kinetic energy utilization rate of convective heat exchange is improved, the overall heat dissipation efficiency is further improved, the overall rapid cooling can be achieved under the cooperation effect of the multi-stage heat dissipation assembly and the ventilation assembly, meanwhile, the heat conduction substrate, the first heat conduction plate and the turbulent flow protruding blocks support independent replacement, and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of motor technology, specifically to a motor stator structure with slotted ends. Background Technology

[0002] Disc motors are a promising type of high-efficiency motor. The stator structure is one of its main components, consisting primarily of the stator core, stator windings, and frame. To facilitate coil winding, slots are typically cut into the stator core, and the windings are wound within these slots. The stator is the stationary part of the motor, forming the basic structure together with the rotor. The stator's primary function is to generate a rotating magnetic field, thereby driving the rotor or inducing current.

[0003] An existing patent (publication number: CN215221852U) discloses a novel disc motor stator structure with double-end slots. It includes a stator body, which comprises a fixed base, a stator core, and stator windings. The stator core is fixedly mounted on the outer side of the stator windings, and the fixed base is fixedly mounted on the outer side of the stator core. Several winding slots are formed on both the front and back sides of the stator core, and several windings are wound and connected within each of the winding slots. A heat sink is fixedly mounted in the middle of the stator core, and several heat-conducting support columns are fixedly mounted on both sides of the inner wall of the heat sink.

[0004] The above solution uses a heat sink to cool down the heat generated by the windings on the stator core, allowing the stator structure to be used at the rated temperature and extending the service life of the stator body. However, this heat dissipation method has problems such as limited heat dissipation efficiency and uneven heat distribution, making it difficult to ensure that the stator structure operates stably at the rated temperature, which in turn affects the service life of the stator body. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a motor stator structure with double-end slots, which has advantages such as enhanced heat dissipation capacity of the motor and extended service life of the stator body, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a motor stator structure with double-end slots, comprising a stator body, the stator body including a mounting frame, a stator core, and a support sleeve, the outer side of the support sleeve being fixedly connected to the inner side of the stator core, the stator core being located inside the mounting frame, the outer side of the stator core being provided with a multi-stage heat dissipation assembly, the multi-stage heat dissipation assembly including a heat-conducting substrate, a first heat-conducting plate, and a second heat-conducting plate from the inside out, the outer surface of the stator core being provided with a plurality of circumferentially arrayed ventilation components, both sides of the stator core being provided with circumferentially arrayed winding slots, the inner wall of each winding slot being fixedly installed with a stator winding, and the inner side of the mounting frame being fixedly connected with an abutment ring.

[0007] The above scheme, through the layer-by-layer heat transfer of the heat-conducting substrate, the first heat-conducting plate, and the turbulence protrusions, forms a continuous heat dissipation path from the stator core to the outside, significantly improving the overall heat dissipation efficiency. Subsequently, under the action of the ventilation components, the airflow can be gradually accelerated during circulation, improving the kinetic energy utilization rate of convective heat transfer, thereby further improving the overall heat dissipation efficiency. With the combined action of multi-stage heat dissipation components and ventilation components, rapid cooling of the whole can be achieved. At the same time, the heat-conducting substrate, the first heat-conducting plate, and the turbulence protrusions can be replaced independently, reducing maintenance costs.

[0008] Furthermore, the inner wall of each winding slot is provided with anti-slip texture.

[0009] The above solution utilizes the contact friction between the stator winding and the slot wall to prevent axial displacement or loosening of the winding under high-frequency vibration, and reduces the risk of wear on the surface insulation layer of the stator winding due to sliding friction, thereby extending the service life of the stator winding.

[0010] Furthermore, two symmetrical insulating pads are provided on both sides of the abutment ring, and the outer surfaces of the two insulating pads are fixedly connected to the inner surface of the mounting frame.

[0011] The above-mentioned insulating pad blocks the leakage current path between the stator core and the mounting frame, thus avoiding the risk of short circuit.

[0012] Furthermore, the inner side of the thermally conductive substrate is closely fitted with the outer side of the stator core, and the thermally conductive substrate is made of titanium alloy.

[0013] Through the above solution, the titanium alloy material of the heat-conducting substrate can ensure rapid heat dissipation, thereby achieving rapid heat dissipation of the stator core.

[0014] Furthermore, the outer surface of the heat-conducting substrate is slidably connected to the inner side of the first heat-conducting plate, and a plurality of circumferentially arrayed turbulence protrusions are fixedly connected to the outer side of the first heat-conducting plate.

[0015] Through the above scheme, the aforementioned turbulence protrusions can disrupt the laminar boundary layer, enhance airflow turbulence, improve convective heat dissipation efficiency, and increase the effective surface area of ​​the first heat-conducting plate by the protrusion structure, further optimizing heat dissipation performance.

[0016] Furthermore, the inner side of the second heat-conducting plate abuts against the outer surface of the turbulence protrusion, and a circumferential array of heat dissipation fins is fixedly connected to the outer surface of the second heat-conducting plate.

[0017] The above solution optimizes heat dissipation performance by setting up heat dissipation fins to expand the surface area, accelerate heat radiation to the environment, and increase the effective surface area of ​​the second heat-conducting plate.

[0018] Furthermore, the ventilation assembly includes a flow collection cavity and a ventilation pipe. The inner wall of the flow collection cavity is opened inside the stator core, and the inner wall of the ventilation pipe is opened inside the stator core. The inner wall of the flow collection cavity and the inner wall of the ventilation pipe are connected.

[0019] Through the above scheme, the above-mentioned flow collection cavity can integrate the airflow, allowing the airflow to pass quickly through the ventilation pipe. During the flow, the heat of the stator core can be quickly carried away, thereby further improving the heat dissipation performance of the stator core.

[0020] Furthermore, the inner wall of the flow collection cavity is tapered.

[0021] Through the above scheme, the conical structure of the above-mentioned collection cavity enables the airflow to gradually accelerate within the collection cavity, thereby improving the kinetic energy utilization rate of convective heat transfer.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This double-end slotted motor stator structure forms a continuous heat dissipation path from the stator core to the outside by setting up a heat-conducting substrate, a first heat-conducting plate, and a turbulence protrusion for layer-by-layer heat transfer, which significantly improves the overall heat dissipation efficiency. Then, under the action of the ventilation component, the airflow can be gradually accelerated during circulation, improving the kinetic energy utilization rate of convective heat transfer, thereby further improving the overall heat dissipation efficiency. With the cooperation of multi-stage heat dissipation components and ventilation components, rapid cooling of the whole can be achieved. At the same time, the heat-conducting substrate, the first heat-conducting plate, and the turbulence protrusion can be replaced independently, reducing maintenance costs. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the entire application;

[0025] Figure 2 A three-dimensional structural diagram of the installation frame for this application;

[0026] Figure 3 This is a three-dimensional structural diagram of the stator core and winding slots of this application;

[0027] Figure 4 This is a three-dimensional structural diagram of the multi-stage heat dissipation component of this application;

[0028] Figure 5 This is a three-dimensional structural diagram of the ventilation component of this application.

[0029] In the picture:

[0030] 1. Stator body; 2. Mounting frame; 3. Stator core; 4. Multi-stage heat dissipation assembly; 401. Heat-conducting substrate; 402. First heat-conducting plate; 403. Turbulence protrusion; 404. Second heat-conducting plate; 405. Heat dissipation fins; 5. Support sleeve; 6. Ventilation assembly; 601. Collector cavity; 602. Ventilation pipe; 7. Winding slot; 8. Stator winding; 9. Abutment ring; 10. Insulating pad. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 2 and Figure 4This embodiment discloses a double-end slotted motor stator structure, including a stator body 1. The stator body 1 includes a mounting frame 2, a stator core 3, and a support sleeve 5. The outer side of the support sleeve 5 is fixedly connected to the inner side of the stator core 3. The stator core 3 is located inside the mounting frame 2. A multi-stage heat dissipation assembly 4 is provided on the outer side of the stator core 3. The multi-stage heat dissipation assembly 4 includes, from the inside out, a heat-conducting substrate 401, a first heat-conducting plate 402, and a second heat-conducting plate 404. The inner side of the heat-conducting substrate 401 is tightly fitted with the outer side of the stator core 3. The heat-conducting substrate 401 is made of titanium alloy. The titanium alloy material of the heat-conducting substrate 401 ensures rapid heat dissipation, thereby achieving rapid heat dissipation of the stator core 3. The outer surface of the heat-conducting substrate 401 is slidably connected to the first heat-conducting plate 404. On the inner side of the heat-conducting plate 402, a plurality of circumferentially arrayed turbulence protrusions 403 are fixedly connected to the outer side of the first heat-conducting plate 402. The aforementioned turbulence protrusions 403 can disrupt the laminar boundary layer, enhance airflow turbulence, improve convective heat dissipation efficiency, and the protrusion structure increases the effective surface area of ​​the first heat-conducting plate 402, further optimizing heat dissipation performance. The inner side of the second heat-conducting plate 404 abuts against the outer surface of the turbulence protrusions 403. A circumferentially arrayed heat dissipation fins 405 are fixedly connected to the outer surface of the second heat-conducting plate 404. By setting the heat dissipation fins 405, the surface area can be expanded to accelerate heat radiation to the environment, and the effective surface area of ​​the second heat-conducting plate 404 can be increased, further optimizing heat dissipation performance. A plurality of circumferentially arrayed ventilation components 6 are provided on the outer surface of the stator core 3.

[0033] Please see Figure 1 , Figure 2 and Figure 3The stator core 3 has circumferentially arrayed winding slots 7 on both sides. A stator winding 8 is fixedly installed on the inner wall of each winding slot 7. An abutment ring 9 is fixedly connected to the inner side of the mounting frame 2. Through the layered heat transfer via the heat-conducting substrate 401, the first heat-conducting plate 402, and the turbulence-inducing protrusions 403, a continuous heat dissipation path is formed from the stator core 3 to the outside, significantly improving overall heat dissipation efficiency. Then, under the action of the ventilation component 6, the airflow gradually accelerates during circulation, improving the kinetic energy utilization rate of convective heat transfer, thereby further improving overall heat dissipation efficiency. With the combined action of the multi-stage heat dissipation component 4 and the ventilation component 6, rapid cooling of the entire structure can be achieved. The heat-conducting substrate 401, the first heat-conducting plate 402, and the turbulence protrusion 403 can be replaced independently, reducing maintenance costs. The inner wall of each winding slot 7 is provided with anti-slip texture. Through the contact friction between the stator winding 8 and the slot wall, the axial displacement or loosening of the winding under high-frequency vibration is prevented, and the wear risk caused by sliding friction on the surface insulation layer of the stator winding 8 is reduced, thus extending the service life of the stator winding 8. Two symmetrical insulating pads 10 are provided on both sides of the abutment ring 9. The outer sides of the two insulating pads 10 are fixedly connected to the inner side of the mounting frame 2. The insulating pads 10 block the leakage current path between the stator core 3 and the mounting frame 2, avoiding the risk of short circuit.

[0034] Please see Figure 1 and Figure 5 The ventilation assembly 6 includes a flow collection cavity 601 and a ventilation pipe 602. The inner wall of the flow collection cavity 601 is opened inside the stator core 3, and the inner wall of the ventilation pipe 602 is opened inside the stator core 3. The inner walls of the flow collection cavity 601 and the ventilation pipe 602 are connected. The flow collection cavity 601 can integrate airflow, allowing the airflow to pass quickly through the ventilation pipe 602. During the flow, the heat of the stator core 3 can be quickly carried away, thereby further improving the heat dissipation performance of the stator core 3. The inner wall of the flow collection cavity 601 is conical. The conical structure of the flow collection cavity 601 causes the airflow to gradually accelerate within the flow collection cavity 601, improving the kinetic energy utilization rate of convective heat transfer.

[0035] In this embodiment, a motor stator structure with double-end slots is provided. By setting up a heat-conducting substrate 401, a first heat-conducting plate 402, and a turbulence protrusion 403 for layer-by-layer heat transfer, a continuous heat dissipation path is formed from the stator core 3 to the outside, which significantly improves the overall heat dissipation efficiency. Then, under the action of the ventilation component 6, the airflow can be gradually accelerated during circulation, improving the kinetic energy utilization rate of convective heat transfer, thereby further improving the overall heat dissipation efficiency. With the cooperation of the multi-stage heat dissipation component 4 and the ventilation component 6, rapid cooling of the whole can be achieved. At the same time, the heat-conducting substrate 401, the first heat-conducting plate 402, and the turbulence protrusion 403 can be replaced independently, reducing maintenance costs.

[0036] It should be noted that the dimensions of the thermal conductive substrate 401, the first thermal conductive plate 402, and the turbulence protrusion 403 are custom-made. During installation, the outer side of the thermal conductive substrate 401 and the inner side of the first thermal conductive plate 402 are in close contact with each other, and the turbulence protrusion 403 and the inner side of the second thermal conductive plate 404 abut against each other. Thus, multi-level heat dissipation can be achieved during installation, and independent replacement of components can be realized.

[0037] The working principle of the above embodiment is as follows: When the stator core 3 is running, the heat generated is conducted through the heat-conducting substrate 401 at the substrate level. Then, the turbulence is formed by the turbulence protrusions 403 on the surface of the first heat-conducting plate 402, which accelerates the heat transfer to the second heat-conducting plate 404. Finally, the heat dissipation fins 405 achieve radiative heat dissipation. At the same time, the heat-conducting substrate 401, the first heat-conducting plate 402 and the turbulence protrusions 403 can be replaced independently, reducing maintenance costs. Afterwards, the ventilation assembly 6 collects airflow through the collection cavity 601. Under its conical structure, the airflow can be gradually accelerated inside the collection cavity 601. When the accelerated airflow passes through the ventilation pipe 602, it can quickly carry away the heat of the stator core 3, thereby achieving further heat dissipation of the stator core 3 and thus improving the overall service life of the stator body 1.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor stator structure with double-end slots, comprising a stator body (1), characterized in that: The stator body (1) includes a mounting frame (2), a stator core (3), and a support sleeve (5). The outer side of the support sleeve (5) is fixedly connected to the inner side of the stator core (3). The stator core (3) is located inside the mounting frame (2). The outer side of the stator core (3) is provided with a multi-stage heat dissipation assembly (4). The multi-stage heat dissipation assembly (4) includes a heat-conducting substrate (401), a first heat-conducting plate (402), and a second heat-conducting plate (404) from the inside to the outside. The outer surface of the stator core (3) is provided with a plurality of circumferentially arrayed ventilation assemblies (6). Both sides of the stator core (3) are provided with circumferentially arrayed winding slots (7). The inner wall of each winding slot (7) is fixedly installed with a stator winding (8). The inner side of the mounting frame (2) is fixedly connected with an abutment ring (9).

2. The motor stator structure with double-end slots according to claim 1, characterized in that: The inner wall of each winding slot (7) is provided with anti-slip texture.

3. The motor stator structure with double-end slots according to claim 1, characterized in that: The abutment ring (9) has two symmetrical insulating pads (10) on both sides, and the outer surfaces of the two insulating pads (10) are fixedly connected to the inner surface of the mounting frame (2).

4. The motor stator structure with double-end slots according to claim 1, characterized in that: The inner side of the heat-conducting substrate (401) is closely attached to the outer side of the stator core (3), and the heat-conducting substrate (401) is made of titanium alloy.

5. The motor stator structure with double-end slots according to claim 1, characterized in that: The outer surface of the heat-conducting substrate (401) is slidably connected to the inner side of the first heat-conducting plate (402), and a plurality of circumferentially arrayed turbulence protrusions (403) are fixedly connected to the outer side of the first heat-conducting plate (402).

6. The motor stator structure with double-end slots according to claim 5, characterized in that: The inner side of the second heat-conducting plate (404) abuts against the outer surface of the turbulence protrusion (403), and a circumferential array of heat dissipation fins (405) is fixedly connected to the outer surface of the second heat-conducting plate (404).

7. The motor stator structure with double-end slots according to claim 1, characterized in that: The ventilation assembly (6) includes a flow collection cavity (601) and a ventilation pipe (602). The inner wall of the flow collection cavity (601) is opened inside the stator core (3), and the inner wall of the ventilation pipe (602) is opened inside the stator core (3). The inner wall of the flow collection cavity (601) and the inner wall of the ventilation pipe (602) are connected.

8. The motor stator structure with double-end slots according to claim 7, characterized in that: The inner wall of the collecting cavity (601) is conical.

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