A heat dissipation structure, a disc motor and a manufacturing method of the disc motor

Abstract

The application discloses a heat dissipation structure, a disc type motor and a manufacturing method of the disc type motor, relates to the technical field of motors, and comprises a circumferential heat dissipation module and a plurality of radial heat dissipation modules. The circumferential heat dissipation module is located in a stator. The inner ends of the radial heat dissipation modules all protrude from the inner side of the stator. The outer ends of the radial heat dissipation modules all protrude from the outer side of the stator. The radial heat dissipation modules are uniformly arranged along the circumference of the circumferential heat dissipation module. The internal space of each radial heat dissipation module is in communication with the internal space of the circumferential heat dissipation module. The internal space of each radial heat dissipation module and the internal space of the circumferential heat dissipation module form a cavity for filling phase change energy storage material. The application can ensure that the heat dissipation structure is in close contact with the stator, so that the phase change energy storage material is directly in contact with a heat source, the heat conduction path is greatly shortened, the heat dissipation capacity of the motor under an overload working condition is further improved, the overload capacity and torque density of the motor are improved, the reliability of the motor is ensured, and the loss of the motor performance is almost not caused.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a heat dissipation structure, a disc motor, and a method for manufacturing a disc motor. Background Technology

[0002] Disc motors possess advantages in high power density, high torque density, high efficiency, and thin profile, making them well-suited for applications requiring high power density and compact space, such as electric vehicle systems, clean energy systems like wind and hydropower, flywheel energy storage systems, robots, industrial machinery, and weaponry. With economic and social development, performance demands have been continuously increasing in recent years. Besides high requirements for rated torque performance, the overload capacity of motors is also receiving increasing attention. However, as the overload ratio increases, the losses generated during motor operation also increase rapidly, placing a significant thermal load on the motor and threatening its safe and reliable operation, potentially even causing it to burn out. It is also worth noting that phase change energy storage materials (PCS) utilize their thermal storage properties to store or release heat, thereby regulating and controlling the temperature of the surrounding environment. However, their application in the heat dissipation of disc motors is relatively limited. Summary of the Invention

[0003] The purpose of this invention is to provide a heat dissipation structure, a disc motor, and a method for manufacturing a disc motor to solve the problems existing in the prior art. It can effectively improve the overload heat dissipation capacity of the motor, increase the overload multiple and torque density of the motor, provide a stronger burst force, and at the same time, the structure is simple, and can ensure high reliability and low cost without increasing the volume.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a heat dissipation structure, including a circumferential heat dissipation module and a plurality of radial heat dissipation modules. The circumferential heat dissipation module is located in a stator. The inner end of each radial heat dissipation module protrudes from the inner side of the stator, and the outer end of each radial heat dissipation module protrudes from the outer side of the stator. The plurality of radial heat dissipation modules are uniformly arranged along the circumferential direction of the circumferential heat dissipation module. The internal space of each radial heat dissipation module is connected to the internal space of the circumferential heat dissipation module. The cavity formed by the internal space of each radial heat dissipation module and the internal space of the circumferential heat dissipation module is used to fill a phase change energy storage material.

[0006] Preferably, the circumferential heat dissipation module is annular, and the radial heat dissipation module is cylindrical; the inner end of each radial heat dissipation module protrudes from the inner side of the circumferential heat dissipation module, and the outer end of each radial heat dissipation module protrudes from the outer side of the circumferential heat dissipation module.

[0007] Preferably, the system further includes an inner stator heat dissipation module and an outer stator heat dissipation module. The inner stator heat dissipation module is disposed inside each of the radial heat dissipation modules, and the internal space of the inner stator heat dissipation module is connected to the internal space of each of the radial heat dissipation modules. The outer stator heat dissipation module is disposed outside each of the radial heat dissipation modules, and the internal space of the outer stator heat dissipation module is connected to the internal space of each of the radial heat dissipation modules. The internal spaces of the inner stator heat dissipation module and the outer stator heat dissipation module are used to fill phase change energy storage material.

[0008] Preferably, the stator inner heat dissipation module includes a first inner heat dissipation component and a second inner heat dissipation component. The internal space of the first inner heat dissipation component and the internal space of the second inner heat dissipation component are connected. The second inner heat dissipation component is connected to the inner end of a plurality of radial heat dissipation modules. The first inner heat dissipation component is in contact with the end of each winding of the stator. The first protrusion of the second inner heat dissipation component is respectively embedded in the end of each winding and in contact with the end of each winding and the stator teeth. The first annular portion of the second inner heat dissipation component is in contact with the inner side of the stator yoke.

[0009] Preferably, the stator outer heat dissipation module includes a first outer heat dissipation component and a second outer heat dissipation component. The internal space of the first outer heat dissipation component and the internal space of the second outer heat dissipation component are connected. The second outer heat dissipation component is connected to the outer ends of a plurality of radial heat dissipation modules. The first outer heat dissipation component contacts the ends of each winding of the stator. The second protrusion of the second outer heat dissipation component is respectively embedded in the ends of each winding and contacts the ends of each winding and the stator teeth. The second annular portion of the second outer heat dissipation component contacts the outer side of the stator yoke.

[0010] The present invention also provides a disc motor, including a rotor, permanent magnets, a stator and the heat dissipation structure. Two rotors are symmetrically arranged at the upper and lower ends of the stator. Each rotor is provided with a plurality of permanent magnets. The stator includes a stator yoke, stator teeth and windings. Two sets of stator teeth are symmetrically arranged at the upper and lower ends of the stator yoke. Each stator tooth is provided with a winding. The permanent magnets are arranged facing the stator teeth. The circumferential heat dissipation module is located in the stator yoke. The inner ends of the plurality of radial heat dissipation modules all protrude from the inner ends of the stator yoke, and the outer ends of the plurality of radial heat dissipation modules all protrude from the outer ends of the stator yoke.

[0011] Preferably, the inner end of each winding away from the stator teeth contacts the first inner heat dissipation assembly, the first protrusion of the second inner heat dissipation assembly is respectively embedded in the inner end of each winding and contacts the inner end of each winding and the stator teeth, and the inner side of the stator yoke contacts the outer side of the first annular portion of the second inner heat dissipation assembly; the outer end of each winding away from the stator teeth contacts the first outer heat dissipation assembly, the second protrusion of the second outer heat dissipation assembly is respectively embedded in the outer end of each winding and contacts the outer end of each winding and the stator teeth, and the outer side of the stator yoke contacts the inner side of the second annular portion of the second outer heat dissipation assembly.

[0012] The present invention also provides a method for manufacturing the disc motor, comprising the following steps:

[0013] Step 1: Determine the shape of the stator;

[0014] Step 2: Determine the inner and outer diameters of the circumferential heat dissipation module based on the inner and outer diameters of the stator yoke; determine the thickness of the circumferential heat dissipation module based on the axial length of the stator yoke; determine the length and distribution of the radial heat dissipation module based on the inner and outer diameters of the stator yoke.

[0015] Step 3: Determine the opening shape of the stator based on the circumferential heat dissipation module and the radial heat dissipation module;

[0016] Step four: Embed the heat dissipation structure filled with phase change energy storage material into the opening of the stator.

[0017] Preferably, in step two, the inner diameter and outer diameter of the stator inner heat dissipation module are determined based on the inner diameter of the stator yoke and the thickness of the inner end of the winding; the inner diameter and outer diameter of the stator outer heat dissipation module are determined based on the outer diameter of the stator yoke and the thickness of the outer end of the winding.

[0018] Preferably, in step three, the opening sizes of the heat dissipation modules on the inner and outer sides of the stator are determined according to the shape and size of the stator slots.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] This invention utilizes a novel phase-change energy storage material, a relatively new material in the field of motors, to fully leverage its characteristic of absorbing a large amount of heat while experiencing minimal temperature change during phase change. Furthermore, it employs a novel and relatively simple and reliable heat dissipation structure. This structure encloses the main heat-generating components of the disc motor without affecting its normal magnetic circuit, resulting in minimal loss of electromagnetic performance. Simultaneously, this invention does not affect the motor's inherent electromagnetic performance or mechanical strength. Therefore, while improving overload heat dissipation, it does not lead to performance loss or strength issues. The relatively simple structure also largely ensures the motor's high reliability and reduces maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional view of the heat dissipation structure of the present invention (Embodiment 1);

[0023] Figure 2 This is a top view of the heat dissipation structure of the present invention (Embodiment 1);

[0024] Figure 3 This is a schematic diagram of the internal structure of the heat dissipation structure of the present invention (Embodiment 1);

[0025] Figure 4 This is a perspective view of the disc motor of the present invention (Embodiment 2);

[0026] Figure 5 This is a schematic diagram of the internal structure of the disc motor of the present invention (Embodiment 2);

[0027] Figure 6 This is a schematic diagram of the heat dissipation structure in the disc motor of the present invention (Embodiment 2);

[0028] Figure 7 This is a flowchart of the manufacturing method of the disc motor of the present invention (Example 3);

[0029] Figure 8 This is a three-dimensional view of the heat dissipation structure of the present invention (Embodiment 4);

[0030] Figure 9 This is a schematic diagram of the internal structure of the heat dissipation structure of the present invention (Embodiment 4);

[0031] Figure 10 This is a perspective view of the disc motor of the present invention (Embodiment 5);

[0032] Figure 11 This is a schematic diagram of the internal structure of the disc motor of the present invention (Embodiment 5);

[0033] Figure 12 This is a flowchart of the manufacturing method of the disc motor of the present invention (Example 6);

[0034] Wherein: 1-circumferential heat dissipation module, 2-radial heat dissipation module, 3-rotor, 4-permanent magnet, 5-stator teeth, 6-stator yoke, 7-winding, 8-stator inner heat dissipation module, 9-stator outer heat dissipation module, 10-first inner heat dissipation component, 11-second inner heat dissipation component, 12-first outer heat dissipation component, 13-second outer heat dissipation component. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The purpose of this invention is to provide a heat dissipation structure, a disc motor, and a method for manufacturing a disc motor to solve the problems existing in the prior art. It can effectively improve the overload heat dissipation capacity of the motor, increase the overload multiple and torque density of the motor, provide a stronger burst force, and at the same time, the structure is simple, and can ensure high reliability and low cost without increasing the volume.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] like Figures 1-3As shown: This embodiment provides a heat dissipation structure that can be used in disc motors. With improvements, it can be adapted to disc motors with various structural forms. It includes a circumferential heat dissipation module 1 and several radial heat dissipation modules 2. The circumferential heat dissipation module 1 and several radial heat dissipation modules 2 form a whole. The circumferential heat dissipation module 1 is located in the stator yoke 6 of the stator. The inner end of each radial heat dissipation module 2 protrudes from the inner side of the stator yoke 6, and the outer end of each radial heat dissipation module 2 protrudes from the outer side of the stator yoke 6. The remaining positions of each radial heat dissipation module 2 are located in the stator yoke 6. Several radial heat dissipation modules 2 are evenly arranged along the circumference of the circumferential heat dissipation module 1. The internal space of each radial heat dissipation module 2 is connected to the internal space of the circumferential heat dissipation module 1. The internal space of each radial heat dissipation module 2 and the internal space of the circumferential heat dissipation module 1 form a whole cavity. The cavity is used to fill the phase change energy storage material. It should be noted that there should be no gaps between the various parts of the device during the process. The volume of the phase change energy storage material after expansion should be less than or equal to the volume of the cavity to ensure the structural integrity and safety of the device. The circumferential heat dissipation module 1 and several radial heat dissipation modules 2 are used for heat dissipation inside the stator. When the motor is operating in a steady state, the phase change energy storage material is in a solid state. When the motor is suddenly overloaded and the stator temperature rises rapidly, the phase change energy storage material becomes liquid and absorbs a large amount of heat to cool the motor. When the overload ends, the phase change energy storage material dissipates heat and returns to a solid state. This cycle repeats, thereby absorbing the heat generated by the motor and reducing the temperature rise.

[0040] In this embodiment, the circumferential heat dissipation module 1 is annular in shape, and the radial heat dissipation module 2 is cylindrical in shape; the inner end of each radial heat dissipation module 2 protrudes from the inner side of the circumferential heat dissipation module 1, and the outer end of each radial heat dissipation module 2 protrudes from the outer side of the circumferential heat dissipation module 1.

[0041] This embodiment utilizes a novel phase-change energy storage material, a relatively new material in the field of motors, fully leveraging its characteristic of absorbing a large amount of heat while experiencing minimal temperature change during phase change. Furthermore, it employs a novel and relatively simple and reliable heat dissipation structure. This structure encloses the main heat-generating components of the disc motor without affecting its normal magnetic circuit, resulting in minimal loss of electromagnetic performance. Simultaneously, this embodiment does not affect the motor's inherent electromagnetic performance or mechanical strength. Therefore, while improving overload heat dissipation, it avoids performance loss and strength issues. The relatively simple structure also largely ensures the motor's high reliability and saves on maintenance costs.

[0042] The heat dissipation structure in this embodiment is compact, simple to manufacture, and easy to process. At the same time, it ensures that the heat dissipation structure is in close contact with the stator, allowing the phase change energy storage material to directly contact the heat source, which greatly shortens the heat conduction path. This can further improve the heat dissipation capacity of the motor under overload conditions, enhance the overload capacity of the motor, ensure the reliability of the motor operation, and hardly cause any loss of motor performance.

[0043] Example 2

[0044] like Figures 4-6 As shown: This embodiment provides a disc motor, including a rotor 3, permanent magnets 4, a stator, and a heat dissipation structure as described in Embodiment 1. Two rotors 3 are symmetrically arranged at the upper and lower ends of the stator. Each rotor 3 is provided with a plurality of permanent magnets 4. The stator includes a stator yoke 6, stator teeth 5, and windings 7. Two sets of stator teeth 5 are symmetrically arranged at the upper and lower ends of the stator yoke 6. Each stator tooth 5 is provided with a winding 7. The permanent magnets 4 are arranged facing the stator teeth 5. The circumferential heat dissipation module 1 is located in the stator yoke 6. The inner ends of a plurality of radial heat dissipation modules 2 all protrude from the inner ends of the stator yoke 6, and the outer ends of a plurality of radial heat dissipation modules 2 all protrude from the outer ends of the stator yoke 6.

[0045] The rotor 3 serves two purposes: fixing the permanent magnet 4 and forming part of the magnetic circuit. The permanent magnet 4 is the source of the magnetic field in the motor and is the basis for the motor's function. The winding 7 can generate a rotating magnetomotive force through reasonable driving and control. It can generate a continuous and stable torque output when working with the matching rotor 3, driving the rotor 3 to rotate. The stator teeth 5 and stator yoke 6 are made of silicon steel sheets with excellent magnetic permeability and are stamped to provide a flow path for the magnetic field in the motor.

[0046] In this embodiment, the circumferential heat dissipation module 1 and the radial heat dissipation module 2 form a closed cavity, preventing leakage of the phase change energy storage material during liquefaction and thus avoiding damage to the device's function. When the motor experiences a sudden large overload, the phase change energy storage material rapidly absorbs the heat generated by the winding 7 end, stator teeth 5, and stator yoke 6, and converts into a liquid state, reducing the motor's temperature rise. When the motor returns to its rated operating condition, the motor temperature gradually decreases, and the heat stored in the phase change energy storage material is transferred to the outer surface of the motor through the circumferential heat dissipation module 1 and the radial heat dissipation module 2 and dissipated, converting back into a solid state, thus completing the cycle.

[0047] Example 3

[0048] like Figure 7 As shown: This embodiment provides a method for manufacturing a disc motor according to Embodiment 2, including the following steps:

[0049] Step 1: Determine the shape of the stator, which mainly includes determining the inner diameter, outer diameter, and axial length of the stator yoke 6;

[0050] Step two, determine the structure of the heat dissipation structure according to the shape of the stator, mainly including: determining the inner and outer diameters of the circumferential heat dissipation module 1 according to the inner and outer diameters of the stator yoke 6; determining the thickness of the circumferential heat dissipation module 1 according to the axial length of the stator yoke 6 while ensuring that it only has a limited impact on the electromagnetic performance of the disc motor stator; determining the length and distribution of the radial heat dissipation module 2 according to the inner and outer diameters of the stator yoke 6.

[0051] Step 3: Determine the opening shape of the stator according to the circumferential heat dissipation module 1 and the radial heat dissipation module 2. This mainly includes determining the opening in the stator yoke 6 according to the determined combined shape of the circumferential heat dissipation module 1 and the radial heat dissipation module 2, ensuring that the heat dissipation structure can be embedded in the stator yoke 6, and ensuring that the stator and the heat dissipation structure can be in close contact.

[0052] Step four involves embedding the heat dissipation structure filled with phase change energy storage material into the opening of the stator. This mainly includes embedding the heat dissipation structure filled with phase change energy storage material into the stator after the opening has been completed, and ensuring that the stator and the heat dissipation structure are in close contact.

[0053] Example 4

[0054] like Figures 8-9 As shown: The difference between this embodiment and Embodiment 1 is that this embodiment also includes an inner stator heat dissipation module 8 and an outer stator heat dissipation module 9. The inner stator heat dissipation module 8 is disposed inside each radial heat dissipation module 2, and the internal space of the inner stator heat dissipation module 8 is connected to the internal space of each radial heat dissipation module 2. The outer stator heat dissipation module 9 is disposed outside each radial heat dissipation module 2, and the internal space of the outer stator heat dissipation module 9 is connected to the internal space of each radial heat dissipation module 2. The internal space of the inner stator heat dissipation module 8, the circumferential heat dissipation module 1, each radial heat dissipation module 2, and the internal space of the outer stator heat dissipation module 9 form an integral cavity. The cavity is used to fill the phase change energy storage material. The volume of the phase change energy storage material after expansion is less than or equal to the volume of the cavity to ensure the structural integrity and safety of the device. At the same time, it is important to note that there should be no gaps between the various parts of the device during the process. When the motor is operating in a steady state, the phase change energy storage material is in a solid state. When the motor is suddenly overloaded and the stator temperature rises rapidly, the phase change energy storage material becomes liquid and absorbs a large amount of heat to cool the motor. When the overload ends, the phase change energy storage material dissipates heat and returns to a solid state. This cycle repeats, thereby absorbing the heat generated by the motor and reducing the temperature rise.

[0055] Specifically, in this embodiment, the stator inner heat dissipation module 8 includes a first inner heat dissipation component 10 and a second inner heat dissipation component 11. The first inner heat dissipation component 10 is located inside the second inner heat dissipation component 11. The internal space of the first inner heat dissipation component 10 and the internal space of the second inner heat dissipation component 11 are connected. The second inner heat dissipation component 11 is connected to the inner ends of a plurality of radial heat dissipation modules 2. The second inner heat dissipation component 11 includes two sets of first protrusions and a first annular portion. The two sets of first protrusions are symmetrically arranged at the upper and lower ends of the first annular portion, respectively. The outer side of the first inner heat dissipation component 10 contacts the inner end of each winding 7 of the stator away from the stator tooth 5. The first protrusion of the second inner heat dissipation component 11 is respectively embedded in the inner end of each winding 7 and contacts the inner end of each winding 7 near the stator tooth 5 and the inner side of the stator tooth 5. The first annular portion of the second inner heat dissipation component 11 contacts the inner side of the stator yoke 6.

[0056] In this embodiment, the stator outer heat dissipation module 9 includes a first outer heat dissipation component 12 and a second outer heat dissipation component 13. The first outer heat dissipation component 12 is located outside the second outer heat dissipation component 13. The internal space of the first outer heat dissipation component 12 and the internal space of the second outer heat dissipation component 13 are connected. The second outer heat dissipation component 13 is connected to the outer ends of a plurality of radial heat dissipation modules 2. The second outer heat dissipation component 13 includes two sets of second protrusions and a second annular portion. The two sets of second protrusions are symmetrically arranged at the upper and lower ends of the second annular portion, respectively. The inner side of the first outer heat dissipation component 12 contacts the outer end of each winding 7 of the stator away from the stator teeth 5. The second protrusion of the second outer heat dissipation component 13 is respectively embedded in the outer end of each winding 7 and contacts the outer end of each winding 7 near the stator teeth 5 and the outer side of each stator teeth 5. The second annular portion of the second outer heat dissipation component 13 contacts the outer side of the stator yoke 6.

[0057] This embodiment utilizes a novel phase-change energy storage material, a relatively new material in the field of motors, fully leveraging its characteristic of absorbing a large amount of heat while experiencing minimal temperature change during phase change. Furthermore, it employs a novel and relatively simple and reliable heat dissipation structure. This structure encloses the main heat-generating components of the disc motor without affecting its normal magnetic circuit, resulting in minimal loss of electromagnetic performance. Simultaneously, this invention does not affect the motor's inherent electromagnetic performance or mechanical strength. Therefore, while improving overload heat dissipation, it does not lead to performance loss or strength issues. The relatively simple structure also largely ensures the motor's high reliability and saves on maintenance costs.

[0058] The heat dissipation structure of this embodiment is compact and simple in process. The phase change energy storage material can directly contact the heat source, which greatly shortens the heat conduction path and can further improve the heat dissipation capacity of the motor under overload conditions, enhance the overload capacity of the motor, ensure the reliability of the motor operation, and will not cause any loss of motor performance.

[0059] Example 5

[0060] like Figures 10-11 As shown: The difference between this embodiment and embodiment two is that this embodiment includes the stator inner heat dissipation module 8 and stator outer heat dissipation module 9 in embodiment four. Specifically, the inner end of each winding 7 away from the stator teeth 5 is in contact with the first inner heat dissipation assembly 10. The first protrusion of the second inner heat dissipation assembly 11 is embedded in the inner end of each winding 7 and is in contact with the inner end of each winding 7. The inner side of the stator yoke 6 is in contact with the outer side of the first annular portion of the second inner heat dissipation assembly 11. The outer end of each winding 7 away from the stator teeth 5 is in contact with the first outer heat dissipation assembly 12. The second protrusion of the second outer heat dissipation assembly 13 is embedded in the outer end of each winding 7 and is in contact with the outer end of each winding 7. The outer side of the stator yoke 6 is in contact with the inner side of the second annular portion of the second outer heat dissipation assembly 13.

[0061] In this embodiment, a closed cavity is formed by the stator inner heat dissipation module 8, the stator outer heat dissipation module 9, the circumferential heat dissipation module 1, and the radial heat dissipation module 2 to prevent leakage of the phase change energy storage material during liquefaction, which could damage the device's function. When the motor experiences a sudden large overload, the phase change energy storage material rapidly absorbs the heat generated by the inner end of the winding 7, the outer end of the winding 7, the stator teeth 5, and the stator yoke 6, and converts it into a liquid state, reducing the motor's temperature rise. When the motor returns to its rated operating condition, the motor temperature gradually decreases, and the heat stored in the phase change energy storage material is transferred to the outer surface of the motor through the heat dissipation structure and dissipated, converting back into a solid state, thus completing the cycle.

[0062] Example 6

[0063] like Figure 12 As shown: This embodiment provides a method for manufacturing a disc motor according to Embodiment 5, including the following steps:

[0064] Step 1: Determine the shape of the stator, which mainly includes determining the inner diameter, outer diameter, and axial length of the stator teeth 5 and stator yoke 6, the shape and size of the stator slots, and determining the dimensions of the inner end and outer end of the winding 7, which mainly includes determining the thickness of the inner end and outer end of the winding 7.

[0065] Step two: Determine the structure of the heat dissipation structure based on the stator shape and the dimensions of the inner and outer ends of winding 7. This mainly includes: determining the inner and outer diameters of the circumferential heat dissipation module 1 based on the inner and outer diameters of the stator yoke 6; determining the thickness of the circumferential heat dissipation module 1 based on the axial length of the stator yoke 6 while ensuring that it only has a limited impact on the electromagnetic performance of the disc motor stator; determining the length and distribution of the radial heat dissipation module 2 based on the inner and outer diameters of the stator yoke 6; determining the inner and outer diameters of the inner heat dissipation module 8 based on the inner diameter of the stator yoke 6 and the thickness of the inner end of winding 7; and determining the inner and outer diameters of the outer heat dissipation module 9 based on the outer diameter of the stator yoke 6 and the thickness of the outer end of winding 7.

[0066] Step 3: Determine the opening shape of the stator based on the circumferential heat dissipation module 1 and the radial heat dissipation module 2. This mainly includes determining the opening in the stator yoke 6 based on the determined combined shape of the circumferential heat dissipation module 1 and the radial heat dissipation module 2, ensuring that the heat dissipation structure can be embedded in the stator yoke 6, and ensuring that the stator and the heat dissipation structure can be in close contact; and determining the opening size of the inner heat dissipation module 8 and the outer heat dissipation module 9 of the stator based on the shape and size of the stator slot.

[0067] Step four involves embedding the heat dissipation structure filled with phase change energy storage material into the opening of the stator. This mainly includes embedding the heat dissipation structure filled with phase change energy storage material into the stator after the opening has been completed, and ensuring that the stator and the heat dissipation structure are in close contact.

[0068] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A stator heat dissipation structure for a disc motor, characterized in that: It includes a circumferential heat dissipation module and several radial heat dissipation modules. The circumferential heat dissipation module is located in the stator. The inner end of each radial heat dissipation module protrudes from the inner side of the stator, and the outer end of each radial heat dissipation module protrudes from the outer side of the stator. The several radial heat dissipation modules are evenly arranged along the circumference of the circumferential heat dissipation module. The internal space of each radial heat dissipation module is connected to the internal space of the circumferential heat dissipation module. The cavity formed by the internal space of each radial heat dissipation module and the internal space of the circumferential heat dissipation module is used to fill phase change energy storage material. It also includes an inner stator heat dissipation module and an outer stator heat dissipation module. The inner stator heat dissipation module is disposed inside each of the radial heat dissipation modules, and the internal space of the inner stator heat dissipation module is connected to the internal space of each of the radial heat dissipation modules. The outer stator heat dissipation module is disposed outside each of the radial heat dissipation modules, and the internal space of the outer stator heat dissipation module is connected to the internal space of each of the radial heat dissipation modules. The internal spaces of the inner stator heat dissipation module and the outer stator heat dissipation module are used to fill phase change energy storage material. The circumferential heat dissipation module is annular, and the radial heat dissipation module is cylindrical; the inner end of each radial heat dissipation module protrudes from the inner side of the circumferential heat dissipation module, and the outer end of each radial heat dissipation module protrudes from the outer side of the circumferential heat dissipation module. The stator inner heat dissipation module includes a first inner heat dissipation component and a second inner heat dissipation component. The internal space of the first inner heat dissipation component and the internal space of the second inner heat dissipation component are connected. The second inner heat dissipation component is connected to the inner end of a plurality of radial heat dissipation modules. The first inner heat dissipation component is in contact with the end of each winding of the stator. The first protrusion of the second inner heat dissipation component is respectively embedded in the end of each winding and in contact with the end of each winding and the stator teeth. The first annular portion of the second inner heat dissipation component is in contact with the inner side of the stator yoke. The stator outer heat dissipation module includes a first outer heat dissipation component and a second outer heat dissipation component. The internal space of the first outer heat dissipation component and the internal space of the second outer heat dissipation component are connected. The second outer heat dissipation component is connected to the outer ends of a plurality of radial heat dissipation modules. The first outer heat dissipation component is in contact with the ends of each winding of the stator. The second protrusion of the second outer heat dissipation component is respectively embedded in the ends of each winding and in contact with the ends of each winding and the stator teeth. The second annular portion of the second outer heat dissipation component is in contact with the outer side of the stator yoke.

2. A disc motor, characterized in that: The device includes a rotor, permanent magnets, a stator, and a stator heat dissipation structure for a disc motor as described in claim 1. Two rotors are symmetrically arranged at the upper and lower ends of the stator. Each rotor is provided with a plurality of permanent magnets. The stator includes a stator yoke, stator teeth, and windings. Two sets of stator teeth are symmetrically arranged at the upper and lower ends of the stator yoke. Each stator tooth is provided with a winding. The permanent magnets are arranged facing the stator teeth. The circumferential heat dissipation module is located in the stator yoke. The inner ends of a plurality of radial heat dissipation modules protrude from the inner end of the stator yoke, and the outer ends of a plurality of radial heat dissipation modules protrude from the outer end of the stator yoke.

3. The disc motor according to claim 2, characterized in that: The inner end of each winding, away from the stator teeth, contacts the first inner heat dissipation assembly. The first protrusion of the second inner heat dissipation assembly is embedded in the inner end of each winding and contacts the inner end of each winding and the stator teeth. The inner side of the stator yoke contacts the outer side of the first annular portion of the second inner heat dissipation assembly. The outer end of each winding, away from the stator teeth, contacts the first outer heat dissipation assembly. The second protrusion of the second outer heat dissipation assembly is embedded in the outer end of each winding and contacts the outer end of each winding and the stator teeth. The outer side of the stator yoke contacts the inner side of the second annular portion of the second outer heat dissipation assembly.

4. A method for manufacturing a disc motor according to any one of claims 2-3, characterized in that: Includes the following steps: Step 1: Determine the shape of the stator; Step 2: Determine the inner and outer diameters of the circumferential heat dissipation module based on the inner and outer diameters of the stator yoke; determine the thickness of the circumferential heat dissipation module based on the axial length of the stator yoke; determine the length and distribution of the radial heat dissipation module based on the inner and outer diameters of the stator yoke. Step 3: Determine the opening shape of the stator based on the circumferential heat dissipation module and the radial heat dissipation module; Step four: Embed the stator heat dissipation structure of the disc motor filled with phase change energy storage material into the opening of the stator.

5. The method for manufacturing a disc motor according to claim 4, characterized in that: In step two, the inner and outer diameters of the stator inner heat dissipation module are determined based on the inner diameter of the stator yoke and the thickness of the inner end of the winding; the inner and outer diameters of the stator outer heat dissipation module are determined based on the outer diameter of the stator yoke and the thickness of the outer end of the winding.

6. The method for manufacturing a disc motor according to claim 4, characterized in that: In step three, the opening sizes of the heat dissipation modules on the inner and outer sides of the stator are determined based on the shape and size of the stator slots.

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