Magnetic tile with built-in heat dissipation channel
By incorporating a grid-like heat dissipation channel into the magnetic tile, the problem of insufficient heat dissipation in traditional magnetic tiles is solved, realizing a three-dimensional heat dissipation path and improving the heat dissipation efficiency and lifespan of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANCHENG ZHONGTIAN MAGNETIC MATERIALS CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional magnetic tiles have insufficient heat dissipation area, a single heat dissipation path, and poor structural adaptability, leading to heat accumulation and affecting motor efficiency and lifespan.
The magnetic tile is designed with built-in heat dissipation channels, including a grid-like heat dissipation channel on the outer and inner ring surfaces. The channel is connected to multiple connecting holes to form a three-dimensional heat dissipation path, which increases the heat dissipation area and accelerates heat removal.
It improves the heat dissipation efficiency of the magnetic tiles, reduces the temperature gradient, reduces the risk of cracking, extends the service life of the motor, and enhances dynamic response performance.
Smart Images
Figure CN224502997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of magnetic tiles, specifically a magnetic tile with a built-in heat dissipation channel. Background Technology
[0002] During the operation of a permanent magnet motor, the magnet is a core component, and its performance directly affects the motor's efficiency and lifespan. In traditional magnets, eddy current losses, hysteresis losses, and mechanical friction generated by rotor rotation cause a significant increase in internal temperature. If this heat cannot be dissipated in time, the following problems may occur: High temperatures can damage the magnetic domain structure of the magnet, leading to a decrease in remanence (Br) and coercivity (Hcj), thereby reducing the motor's output torque and efficiency. Thermal stress caused by temperature gradients may cause the magnet to crack or delaminate, shortening the motor's lifespan. Localized overheating may cause aging of the insulation material, or even motor burnout, increasing maintenance costs.
[0003] In existing technologies, heat dissipation of magnetic tiles mainly relies on the following two methods: natural convection heat dissipation: heat is carried away by natural convection between the surface of the magnetic tile and the air, but the heat dissipation efficiency is low and it is difficult to meet the needs of high power density motors. Housing conduction heat dissipation: the magnetic tile is in close contact with the inner wall of the housing, and heat is conducted to the outside through the housing. However, the contact area between the magnetic tile and the housing is limited, and air gaps may exist at the contact surface, leading to increased thermal resistance and limiting the heat dissipation effect.
[0004] Defects of existing technology: Insufficient heat dissipation area: Traditional magnetic tiles have flat surfaces, resulting in a small contact area with air or the casing, leading to severe heat accumulation. Single heat dissipation path: Heat can only be conducted unidirectionally through the outer or inner ring surface, failing to form a three-dimensional heat dissipation network, making it difficult to efficiently dissipate heat from the inner ring side (near the rotor). Poor structural adaptability: Existing heat dissipation designs do not fully consider the installation method of the magnetic tiles in the motor, resulting in a mismatch between the heat dissipation channel and the actual heat flow path. Utility Model Content
[0005] The purpose of this invention is to provide a magnetic tile with a built-in heat dissipation channel to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a magnetic tile with built-in heat dissipation channels, comprising a magnetic tile sheet, wherein a heat dissipation channel one is provided on the outer ring surface of the magnetic tile sheet, a heat dissipation channel two is provided inside the magnetic tile sheet, a heat dissipation channel three is provided inside the magnetic tile sheet, and the heat dissipation channel two and the heat dissipation channel three are connected through a heat dissipation hole one, and the heat dissipation channel one and the heat dissipation channel three are connected through a heat dissipation hole two.
[0007] Preferably, the heat dissipation channel includes a through groove and branch grooves. The through groove is opened on the outer ring surface of the magnetic tile, and the length of the long side of the through groove is equal to the length of the long side of the magnetic tile. There are two sets of branch grooves, both of which are opened on the outer ring surface of the magnetic tile. The two sets of branch grooves are symmetrically distributed about the through groove, and the through groove and the branch grooves are connected. Each set of branch grooves has multiple branch grooves, and the multiple branch grooves are arranged at equal distances and of equal size along the long side of the through groove.
[0008] Preferably, the heat dissipation channel two includes a through groove two, which is formed on the inner ring surface of the magnetic tile. Multiple through grooves two are provided, and the multiple through grooves two are arranged at equal distances and of equal size along the inner ring surface of the magnetic tile.
[0009] Preferably, the heat dissipation channel three includes an opening that penetrates the magnetic tile. Multiple openings are provided, and each opening corresponds to a channel two.
[0010] Preferably, the heat dissipation hole one is formed on the surface of the through groove two, and multiple heat dissipation holes one are provided, with the multiple heat dissipation holes one arranged along the long side of the through groove two.
[0011] Preferably, the second heat dissipation hole is formed on the surface of the first through groove, and the second heat dissipation hole has multiple holes.
[0012] Preferably, the surface of the branch groove is provided with heat dissipation holes three, which connect the branch groove and the through opening.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] The magnetic tile with built-in heat dissipation channel proposed in this utility model forms a grid-like heat dissipation channel on the outer ring surface of the magnetic tile through the design of heat dissipation channel one, which increases the heat dissipation area compared with the traditional smooth surface; multiple heat dissipation channels two are evenly distributed along the inner ring surface, further increasing the convection area with the air on the rotor side and accelerating the heat dissipation from the inner ring side; heat dissipation channels one and two and heat dissipation channel three that penetrates the magnetic tile form a three-dimensional heat dissipation path, and heat can be quickly conducted from the inner ring side to the outer ring side through heat dissipation channel three, thereby improving the heat dissipation efficiency. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the present invention with the through grooves distributed behind the magnetic tile;
[0017] Figure 3 This is a front view of the structure of this utility model;
[0018] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point AA;
[0019] Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point BB.
[0020] In the diagram: 1. Magnetic tile; 2. Through groove 1; 3. Branch groove 3; 4. Through groove 2; 5. Heat dissipation hole 1; 6. Heat dissipation hole 2; 7. Heat dissipation hole 3; 8. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit 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.
[0022] Please see Figures 1-5 This utility model provides a technical solution: a magnetic tile with a built-in heat dissipation channel, including a magnetic tile 1. The outer ring surface of the magnetic tile 1 is provided with a heat dissipation channel one, which includes a through groove one 2 and branch grooves 3. The through groove one 2 is opened on the outer ring surface of the magnetic tile 1, and the length of the long side of the through groove one 2 is equal to the length of the long side of the magnetic tile 1. There are two sets of branch grooves 3, both of which are opened on the outer ring surface of the magnetic tile 1. The two sets of branch grooves 3 are symmetrically distributed about the through groove one 2, and the through groove one 2 and the branch grooves 3 are connected. Each set of branch grooves 3 has multiple branch grooves, which are arranged at equal intervals and of equal size along the long side of the through groove one 2. When the magnetic tile 1 is inserted into the permanent magnet motor, the outer ring surface of the magnetic tile 1 and the inner wall of the permanent magnet motor housing form a heat dissipation channel one through the through groove one 2 and the branch grooves 3. That is, the magnetic tile 1 reserves a channel on its outer ring surface that does not contact the inner wall of the permanent magnet motor housing, thereby increasing the heat dissipation area of the magnetic tile 1.
[0023] The magnetic tile 1 has a heat dissipation channel 2 inside, which includes a through groove 2 5. The through groove 2 5 is formed on the inner ring surface of the magnetic tile 1, and there are multiple through grooves 2 5. The multiple through grooves 2 5 are arranged at equal intervals and of equal size along the inner ring surface of the magnetic tile 1. After the multiple magnetic tiles 1 are installed inside the permanent magnet motor housing, heat is dissipated through the heat dissipation channel and the rotor structure inside the permanent magnet motor.
[0024] The magnetic tile 1 has a heat dissipation channel 3 inside, which includes an opening 4 that penetrates the magnetic tile 1. There are multiple openings 4, and each opening 4 corresponds to a channel 5. The heat dissipation channel 2 and the heat dissipation channel 3 are connected by a heat dissipation hole 6. The heat dissipation hole 6 is opened on the surface of the channel 5, and there are multiple heat dissipation holes 6 arranged along the long side of the channel 5. The heat dissipation channel 1 and the heat dissipation channel 3 are connected by a heat dissipation hole 7. The heat dissipation hole 7 is opened on the surface of the channel 2, and there are multiple heat dissipation holes 7. The surface of the branch groove 3 has a heat dissipation hole 8, which connects the branch groove 3 and the opening 4. The opening 4, together with the heat dissipation holes 6 and 7, guides the heat from the inner ring side of the magnetic tile 1 to the outer ring side of the magnetic tile 1, thereby improving the overall heat dissipation effect of the magnetic tile 1.
[0025] Instructions for using magnetic tiles with built-in heat dissipation channels: Position the outer ring of magnetic tile 1 towards the inner wall of the permanent magnet motor housing, and the inner ring towards the rotor structure. Ensure the long side of magnetic tile 1 is parallel to the motor axis to avoid misalignment affecting the alignment of the heat dissipation channels. Insert magnetic tile 1 into the inner wall of the housing, creating a gap between the through groove 2 and branch groove 3 on the outer ring surface and the inner wall, forming heat dissipation channel one. The long side of through groove 2 must completely fit the axial length of the inner wall of the housing, and the branch grooves 3 must be symmetrically distributed and unobstructed. When installing multiple magnetic tiles 1, ensure that the through grooves 5 on the inner ring surfaces of adjacent magnetic tiles are evenly arranged circumferentially to form a continuous heat dissipation channel two. Confirm that the opening 4 penetrates the thickness direction of the magnetic tile and corresponds one-to-one with the through grooves 5, forming a vertical passage for heat dissipation channel three. Verify the connectivity of heat dissipation holes 1 (6), 2 (7), and 3 (8): Heat dissipation hole 1 (6) must guide the heat from through slot 2 (5) into through opening 4; heat dissipation hole 2 (7) must guide the heat from through slot 1 (2) into through opening 4; heat dissipation hole 3 (8) must guide the heat from branch slot 3 into through opening 4. If using thermal grease, it must be applied evenly to the surface of the heat dissipation holes to avoid clogging the pores. The heat generated by the rotor rotation flows into through slot 2 (5) through air or cooling medium, and enters through through hole 1 (6) into through opening 4. The heat in through opening 4 flows into through slot 1 (2) through through hole 2 (7), or into branch slot 3 through through hole 3 (8), and finally diffuses to the outside of the housing through heat dissipation channel 1. The heat dissipation channel structure of the magnet is compatible with the existing motor assembly process, requiring no additional modification to the housing or rotor structure, reducing modification costs. By adjusting the width of the through slots, the number of branch slots, or the density of the heat dissipation holes, it can flexibly adapt to the heat dissipation requirements of motors with different power levels. The edges of the heat dissipation channels and through openings are rounded to reduce stress concentration and lower the risk of magnet cracking. The hollow heat dissipation channel design reduces weight and motor rotational inertia while ensuring the mechanical strength of the magnetic tile, thus improving dynamic response performance.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A magnetic tile with a built-in heat dissipation channel, comprising magnetic tile sheet (1), characterized in that: The outer ring surface of the magnetic tile (1) is provided with a heat dissipation channel one, the inside of the magnetic tile (1) is provided with a heat dissipation channel two, the inside of the magnetic tile (1) is provided with a heat dissipation channel three, the heat dissipation channel two and the heat dissipation channel three are connected through a heat dissipation hole one (6), and the heat dissipation channel one and the heat dissipation channel three are connected through a heat dissipation hole two (7).
2. The magnetic tile with a built-in heat dissipation channel according to claim 1, characterized in that: The heat dissipation channel includes a through groove (2) and a branch groove (3). The through groove (2) is opened on the outer ring surface of the magnetic tile (1). The length of the long side of the through groove (2) is equal to the length of the long side of the magnetic tile (1). There are two sets of branch grooves (3). Both sets of branch grooves (3) are opened on the outer ring surface of the magnetic tile (1). The two sets of branch grooves (3) are symmetrically distributed about the through groove (2). The through groove (2) and the branch groove (3) are connected. Each set of branch grooves (3) has multiple branches. The multiple branch grooves (3) are arranged at equal distances and of equal size along the long side of the through groove (2).
3. The magnetic tile with a built-in heat dissipation channel according to claim 2, characterized in that: The second heat dissipation channel includes a second through groove (5), which is opened on the inner ring surface of the magnetic tile (1). There are multiple second through grooves (5), and the multiple second through grooves (5) are arranged at equal distances and of equal size along the inner ring surface of the magnetic tile (1).
4. The magnetic tile with a built-in heat dissipation channel according to claim 3, characterized in that: The heat dissipation channel three includes an opening (4), which penetrates the magnetic tile (1). Multiple openings (4) are provided, and the openings (4) and the channel two (5) correspond one-to-one.
5. A magnetic tile with a built-in heat dissipation channel according to claim 4, characterized in that: The heat dissipation hole 1 (6) is opened on the surface of the through groove 2 (5). There are multiple heat dissipation holes 1 (6), and multiple heat dissipation holes 1 (6) are arranged along the long side of the through groove 2 (5).
6. The magnetic tile with a built-in heat dissipation channel according to claim 5, characterized in that: The second heat dissipation hole (7) is opened on the surface of the first through slot (2), and there are multiple second heat dissipation holes (7).
7. A magnetic tile with a built-in heat dissipation channel according to claim 6, characterized in that: The surface of the branch groove (3) is provided with heat dissipation holes three (8), which connect the branch groove (3) and the through-hole (4).