Disc-type motor heat dissipation structure and disc-type motor

Abstract

The utility model discloses a disc-type motor heat dissipation structure and a disc-type motor, and solves the technical problem that the existing disc-type motor is poor in heat dissipation performance, so that the flight efficiency is low when the disc-type motor is applied to a rotor power system. The cooling device comprises a cooling assembly, a duct structure and a cooling channel, the duct structure is formed by gaps among a motor stator, an upper rotor ring, a lower rotor ring and a rotating shaft, the cooling channel is arranged on the motor stator and communicated with the duct structure and the outside, and the cooling assembly is arranged at the position, located at the duct structure, of the rotating shaft. And the upper rotor ring and / or the lower rotor ring are / is a driving rotor ring capable of generating rotary driving with a motor stator. The motor has the advantages of good heat dissipation performance, high motor power output and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of disc motors, in particular to a disc motor heat dissipation structure and a disc motor. Background Art

[0002] The disc motor is a special type of motor characterized by a small axial length dimension and a large radial dimension, and a disc-like shape. Due to its high efficiency and high power density, it is widely used in elevators, commercial vehicles, construction machinery, military industry, aerospace, rotorcraft and other fields.

[0003] The application of disc motors in rotor propulsion systems is mainly reflected in their power output driving the rotor to rotate, thereby generating lift. The magnitude of the lift determines the flight capability and carrying capacity of the rotorcraft. However, if the speed of the disc motor is too high, it is easy to increase the size of the motor and generate a lot of heat. If the heat dissipation is insufficient, it will cause the disc motor to overheat and affect its reliability.

[0004] In the existing patent CN118083167A, a new coaxial twin-rotor UAV is disclosed. The rotation of the coaxial twin-propeller motor drives the rotation of the blades to provide lift to the UAV. The rotation of the upper outer frame and the inner frame of the motor enables the UAV to complete pitch and roll movements, thereby improving its flexibility during flight. However, in this device, its double-layer propeller blades are installed in reverse and are both located at one end of the motor. The introduction of a speed change device is not conducive to the lightweight design of the rotor power system. In addition, the motor used has poor heat dissipation, resulting in serious energy consumption of the entire motor.

[0005] The patent with publication number CN118004415A and patent name “Rotorcraft” discloses a rotor structure that uses the Coanda effect to enable the power rotor system to obtain additional lift, but it does not perform additional heat dissipation treatment on the motor.

[0006] In summary, the disc motor of the existing rotor power system will generate a large amount of heat during operation, resulting in reduced flight efficiency. Based on the problems existing in the above-mentioned existing patents, it is necessary to study a disc motor with good heat dissipation capability. Utility Model Content

[0007] The technical problem to be solved by the utility model is that the existing disc-type motor has poor heat dissipation performance, resulting in low flight efficiency when used in a rotor power system.

[0008] The utility model is achieved through the following technical solutions:

[0009] A disc motor heat dissipation structure includes: a heat dissipation component, a duct structure and a heat dissipation channel.

[0010] The gaps between the motor stator, the upper rotor ring, the lower rotor ring and the rotating shaft form the duct structure. The heat dissipation channel is arranged on the motor stator and is respectively connected to the duct structure and the outside world. The rotating shaft is provided with a heat dissipation component at the duct structure. The upper rotor ring and / or the lower rotor ring are driving rotor rings that can generate rotational drive with the motor stator.

[0011] The duct structure includes an upper duct formed by the gap between the motor stator and the upper rotor ring, a lower duct formed by the gap between the motor stator and the lower rotor ring, and a central duct formed by the gap between the motor stator and the rotating shaft. The upper duct, the lower duct and the central duct are interconnected.

[0012] In the present invention, when the motor is in working state, the heat generated by the driving coil in the motor stator can be diffused outward through the duct structure for passive heat dissipation. By arranging a heat dissipation component on the rotating shaft, the heat dissipation component will be driven to rotate while the rotating shaft rotates, thereby throwing hot air outward along the heat dissipation channel for active heat dissipation. This heat dissipation structure ensures the stable operation of the motor and improves its service life.

[0013] A circumferential inner recess is provided on the rotating shaft, the heat dissipation assembly is arranged circumferentially along the inner recess, and the motor stator, the upper rotor ring, the lower rotor ring and the inner recess form the duct structure.

[0014] The utility model provides an inner recess on the rotating shaft. On the one hand, the rotation of the heat dissipation component will form a negative pressure space in the inner recess. At this time, the external gas will be sucked into the inner recess through the duct structure under the action of the pressure difference, and will be thrown outward under the rotation of the heat dissipation component in the inner recess. The thrown-out airflow will flow out along the heat dissipation channel. This process will take away the heat inside the motor. On the other hand, the setting of the inner recess makes the setting of the rotating shaft and other components of the motor more compact, thereby improving space utilization.

[0015] Preferably, the shaft is sleeved with a central sleeve, the heat dissipation assembly is disposed outside the central sleeve, the upper rotor ring is provided with an upper sleeve and sleeved on the shaft via the upper sleeve, and the lower rotor ring is provided with a lower sleeve and sleeved on the shaft via the lower sleeve. The motor stator, upper rotor ring, lower rotor ring, and central sleeve form the duct structure. The sleeve structure facilitates modular assembly of the shaft, facilitating installation, maintenance, and replacement.

[0016] Preferably, the rotating shaft adopts a spline shaft structure, which facilitates the installation and disassembly of the middle sleeve, the upper sleeve sleeve and the lower sleeve sleeve on the rotating shaft.

[0017] The heat dissipation component is a guide structure, which is used to drive the airflow to be discharged as the shaft rotates for active heat dissipation. The heat dissipation component is preferably set to an arc structure to increase the contact area with the airflow when the shaft rotates, so as to improve the heat dissipation efficiency. It should be noted that the direction of the concave surface inside the arc structure is opposite to the direction of rotation of the shaft, so as to increase the wind impact area during rotation, so that the heat dissipation component can better throw out the hot air flow.

[0018] Preferably, a coil sleeve is provided on the motor stator, and the heat dissipation channel is provided on the coil sleeve, and the upper and lower ends of the heat dissipation channel do not pass through the coil sleeve, so that the heat dissipation channel is isolated from the upper duct and the lower duct. This can prevent the hot air flow out of the heat dissipation channel from affecting the entry of cold air in the upper and lower ducts, so that the entry of cold air and the removal of hot air do not interfere with each other.

[0019] A disc-type motor comprises the above-mentioned motor heat dissipation structure.

[0020] Preferably, the upper rotor ring and the lower rotor ring are both driving rotor rings that can generate rotational drive with the motor stator. The upper rotor ring and the lower rotor ring are both connected to the rotating shaft and can rotate with the rotating shaft. The motor stator is located between the upper rotor ring and the lower rotor ring, and the gap between the upper rotor ring, the lower rotor ring, the motor stator and the rotating shaft forms the duct structure.

[0021] After adopting this technical solution, it should be noted that the dual-rotor structure formed by the upper rotor ring and the lower rotor ring can increase the power density of the electric motor, so that higher power output can be obtained within a limited space. In addition, the compact structure of the dual-rotor structure reduces the complexity of the transmission mechanism and improves space utilization and power transmission efficiency.

[0022] Preferably, a radial limiting assembly and / or an axial supporting assembly is further provided outside the rotating shaft, the radial limiting assembly is located above the upper rotor ring and / or below the lower rotor ring, the axial supporting assembly is located between the radial limiting assembly and the upper rotor ring, and / or the axial supporting assembly is located between the radial limiting assembly and the lower rotor ring.

[0023] The utility model realizes radial suspension of the rotating shaft through the radial limit assembly, improves the stability of the rotating shaft during rotation and reduces rotational friction, and realizes low-friction starting and operation of the motor by setting the axial support assembly, reduces energy consumption and simplifies the structure.

[0024] Preferably, the radial limit assembly includes an upper radial limit assembly and a lower radial limit assembly, the axial support assembly includes an upper axial support assembly and a lower axial support assembly, the upper axial support assembly is located above the upper rotor ring, the lower axial support assembly is located below the lower rotor ring, the upper radial limit assembly is located above the upper axial support assembly, and the lower radial limit assembly is located below the lower axial support assembly.

[0025] The utility model arranges an upper radial limit assembly and a lower radial limit assembly outside the rotating shaft, which can keep the rotating shaft relatively stable in the radial direction during operation, thereby preventing the rotating shaft from swinging in the radial direction. The radial limit assemblies are arranged at the upper and lower parts, which further enhances the stability of the rotating shaft in the radial direction; the upper axial support assembly and the lower axial support assembly achieve better low-friction starting and operation.

[0026] Preferably, the upper radial limiting assembly and the lower radial limiting assembly, as well as the upper axial supporting assembly and the lower axial supporting assembly all adopt electromagnets, and the electromagnetic structure can better control the suspension force as needed.

[0027] Furthermore, a bracket is connected to the outside of the motor stator, and the bracket is respectively connected to the upper radial limit assembly, the lower radial limit assembly, the upper axial support assembly and the lower axial support assembly. On the one hand, the bracket fixes the motor stator, and on the other hand, the bracket is connected to the outside of the motor stator, the radial limit assembly and the axial support assembly. The heat generated by the coil in the motor stator and the radial limit assembly and the axial support assembly will be conducted to the bracket for passive heat dissipation.

[0028] Working principle of heat dissipation: The dual-rotor motor structure drives the shaft to rotate, and the drive coil on the motor stator will generate heat. This heat will be transferred through two heat dissipation methods: active heat dissipation and passive heat dissipation.

[0029] Passive heat dissipation: The heat generated by the driving coil is directly exchanged with the external airflow through the duct structure and the heat generated by the driving coil is transferred to the bracket, and then heat is exchanged with the external air for heat dissipation;

[0030] Active heat dissipation: The rotation of the shaft drives the heat dissipation component to rotate. The rotation of the heat dissipation component creates a negative pressure space in the central duct, which draws the external air into the central duct through the duct structure between the upper and lower rotor rings and the motor stator. The air is then thrown out through the heat dissipation channel under the impact of the heat dissipation component. The thrown airflow will take away the heat on the coil sleeve, thereby achieving cooling inside the motor.

[0031] Furthermore, the disc motor includes N+1 rotor rings and N motor stators, and the N+1 rotor rings and the N motor stators constitute N bilateral motors, wherein, based on the axial direction of the rotating shaft, the rotor ring located at the uppermost end in the axial direction is the first rotor ring, the rotor ring located at the lowermost end in the axial direction is the second rotor ring, and the rotor ring located between the first rotor ring and the second rotor ring is the third rotor ring, and N is a natural number greater than or equal to 2.

[0032] The utility model has the following advantages and beneficial effects:

[0033] 1. The utility model designs a disc-type motor heat dissipation structure, which dissipates the heat generated by the motor through the cooperation of a duct structure, a heat dissipation component and a heat dissipation channel.

[0034] 2. The utility model sets a heat dissipation component on the rotating shaft. When the rotating shaft rotates, the heat dissipation component will also be driven to rotate, thereby throwing out hot air through the heat dissipation channel for active heat dissipation. This heat dissipation structure ensures the stable operation of the motor and improves its service life.

[0035] 3. The utility model sets an inner recess on the rotating shaft. On the one hand, the rotation of the heat dissipation component will form a negative pressure space in the inner recess. At this time, the external gas will be sucked into the inner recess through the duct structure under the action of the pressure difference, and then thrown out under the action of the rotation of the heat dissipation component in the inner recess. The thrown-out airflow will flow out along the duct structure. This process will take away the heat inside the motor. On the other hand, the setting of the inner recess increases the negative pressure space and improves the heat dissipation effect.

[0036] 4. The utility model sets the heat dissipation component to be arc-shaped to increase the contact area with the airflow when the shaft rotates, thereby improving the heat dissipation efficiency. The direction of the inner concave surface of the arc is opposite to the direction of rotation of the shaft to increase the wind impact area during rotation, so that the heat dissipation component can better throw out the airflow.

[0037] 5. The utility model disposes a bracket with good thermal conductivity outside the motor stator, and connects the bracket with the motor stator, the radial limit assembly and the axial support assembly to conduct away the generated heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of the present invention, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the cross-sectional structure of the motor of the utility model;

[0040] Figure 2 This is a schematic diagram of the shaft structure of the utility model;

[0041] Figure 3This is a schematic diagram of the three-dimensional structure of the motor of the utility model;

[0042] Figure 4 This is a schematic diagram of the heat dissipation channel structure of the utility model;

[0043] Figure 5 This is another schematic diagram of the rotating shaft structure of the present utility model.

[0044] The names of the components in the accompanying drawings are as follows:

[0045] 1-rotating shaft, 101-heat dissipation assembly, 102-inner recess, 2-upper radial limit assembly; 3-upper axial support assembly; 4-upper rotor ring; 5-motor stator; 6-lower rotor ring; 7-lower axial support assembly; 8-lower radial limit assembly; 9-bracket; 10-duct structure, 11-upper sleeve, 12-lower sleeve, 13-middle sleeve, 14-coil sleeve, 15-heat dissipation channel. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0047] Example 1

[0048] like Figure 1-Figure 5 As shown, a disc motor heat dissipation structure includes:

[0049] The heat dissipation component 101, the duct structure 10 and the heat dissipation channel 15,

[0050] The gaps between the motor stator 5, the upper rotor ring 4, the lower rotor ring 6 and the rotating shaft 1 form the duct structure 10. The heat dissipation channel 15 is arranged on the motor stator 5 and is respectively connected to the duct structure 10 and the outside world. The rotating shaft 1 is provided with a heat dissipation component 101 at the duct structure 10. The upper rotor ring 4 and / or the lower rotor ring 6 are driving rotor rings that can generate rotational drive with the motor stator 5.

[0051] When the rotor ring is driven, a driving coil is provided on the motor stator 5 , and a permanent magnet is provided on the end face of the rotor ring opposite to the driving coil to cooperate with the driving coil to generate driving force.

[0052] When no permanent magnet is provided, no driving force is generated between the rotor ring and the motor stator 5 .

[0053] The duct structure 10 includes an upper duct formed by the gap between the motor stator 5 and the upper rotor ring 4, a lower duct formed by the gap between the motor stator 5 and the lower rotor ring 6, and a central duct formed by the gap between the motor stator 5 and the rotating shaft 1. The upper duct, the lower duct and the central duct are connected to each other and to the outside world.

[0054] In the present invention, when the motor is in operation, the heat generated by the driving coil in the motor stator 5 can be diffused outward through the duct structure 10 for passive heat dissipation. By arranging a heat dissipation component 101 on the rotating shaft 1, the rotating shaft 1 will also drive the heat dissipation component 101 to rotate while rotating, thereby throwing hot air outward along the heat dissipation channel 15 for active heat dissipation. This heat dissipation structure ensures the stable operation of the motor and improves its service life.

[0055] The heat dissipation component 101 is a guide structure, which is used to drive the airflow to be discharged for active heat dissipation as the shaft 1 rotates. The heat dissipation component 101 is set to an arc structure to increase the contact area with the airflow when the shaft 1 rotates, thereby improving the heat dissipation efficiency. It should be noted that the direction of the concave surface inside the arc structure is opposite to the direction of rotation of the shaft 1, so as to increase the wind impact area during the rotation process, so that the heat dissipation component 101 can better throw out the hot air flow.

[0056] In addition, in this embodiment, the heat dissipation component 101 may also be other structures, such as a spiral protrusion, as long as it can promote the airflow to be sucked in from the duct structure 10 and thrown out from the heat dissipation channel 15 as the shaft 1 rotates.

[0057] Example 2

[0058] The difference between this embodiment and embodiment 1 is that Figure 2 As shown, a circumferential inner recess 102 is provided on the rotating shaft 1 , the heat dissipation assembly 101 is arranged circumferentially along the inner recess 102 , and the motor stator 5 , the upper rotor ring 4 , the lower rotor ring 6 and the inner recess 102 form the duct structure 10 .

[0059] The present invention provides an inner recess 102 on the rotating shaft 1. On the one hand, the rotation of the heat dissipation component 101 will form a negative pressure space in the inner recess 102. At this time, the external gas will be sucked into the inner recess 102 through the duct structure 10 under the action of the pressure difference, and will be thrown outward under the rotation of the heat dissipation component 101 in the inner recess 102. The thrown-out airflow will flow out along the heat dissipation channel 15. This process will take away the heat inside the motor. On the other hand, the provision of the inner recess 102 makes the provision of the rotating shaft 1 and other components of the motor more compact, thereby improving space utilization.

[0060] Example 3

[0061] The difference between this embodiment and embodiment 2 is that the installation method of the heat dissipation component 101 is different. Figure 5 As shown, specifically: the rotating shaft 1 adopts a spline shaft, and the middle sleeve 13 is sleeved on the spline shaft, the heat dissipation component 101 is arranged on the outside of the middle sleeve 13, the upper rotor ring 4 is provided with an upper sleeve 11 and is sleeved on the rotating shaft 1 through the upper sleeve 11, the lower rotor ring 6 is provided with a lower sleeve 12 and is sleeved on the rotating shaft 1 through the lower sleeve 12, the motor stator 5, the upper rotor ring 4, the lower rotor ring 6 and the middle sleeve 13 form the duct structure 10, and the sleeve structure facilitates modular assembly on the rotating shaft 1, and is convenient for installation and maintenance and replacement.

[0062] Example 4

[0063] The difference between this embodiment and embodiment 1 is that Figure 4 As shown, a coil sleeve 14 is provided on the motor stator 5, and the heat dissipation channel 15 is provided on the coil sleeve 14, and the upper and lower ends of the heat dissipation channel 15 do not pass through the coil sleeve 14, so that the heat dissipation channel 15 is isolated from the upper duct and the lower duct, so that the hot air flow out of the heat dissipation channel 15 can be prevented from affecting the entry of cold air in the upper and lower ducts, so that the entry of cold air and the removal of hot air do not interfere with each other.

[0064] Example 5

[0065] This embodiment discloses a disc motor, such as Figure 1 As shown, it includes the motor heat dissipation structure as described in any one of Examples 1-4, and also includes a rotor ring, a motor stator 5 and a rotating shaft 1. The upper rotor ring 4 and the lower rotor ring 6 are driving rotor rings that can generate rotational drive with the motor stator 5, that is, they constitute a dual-drive dual-rotor motor.

[0066] The upper rotor ring 4 and the lower rotor ring 6 are both connected to the rotating shaft 1 and can rotate with the rotating shaft 1. The motor stator 5 is located between the upper rotor ring 4 and the lower rotor ring 6. The gap between the upper rotor ring 4, the lower rotor ring 6, the motor stator 5 and the rotating shaft 1 forms the duct structure 10.

[0067] The upper rotor ring 4 and the lower rotor ring 6 form a dual-rotor structure, which can increase the power density of the motor, so that higher power output can be obtained in a limited space. In addition, the compact structure of the dual-rotor structure reduces the complexity of the transmission mechanism and improves space utilization and power transmission efficiency.

[0068] Example 6

[0069] The difference between this embodiment and embodiment 5 is that Figure 1 and Figure 3As shown, a radial limiting assembly and / or an axial supporting assembly are also provided. The radial limiting assembly is located above the upper rotor ring 4 and / or below the lower rotor ring 6, and the axial supporting assembly is located between the radial limiting assembly and the upper rotor ring 4, and / or the axial supporting assembly is located between the radial limiting assembly and the lower rotor ring 6.

[0070] The utility model realizes radial suspension of the rotating shaft 1 through the radial limiting component, improves the stability of the rotating shaft 1 during rotation and reduces rotational friction, realizes low-friction starting by setting the axial support component, reduces energy consumption and simplifies the structure.

[0071] The radial limit assembly includes an upper radial limit assembly 2 and a lower radial limit assembly 8, and the axial support assembly includes an upper axial support assembly 3 and a lower axial support assembly 7. The upper axial support assembly 3 is located above the upper rotor ring 4, and the lower axial support assembly 7 is located below the lower rotor ring 6. The upper radial limit assembly 2 is located above the upper axial support assembly 3, and the lower radial limit assembly 8 is located below the lower axial support assembly 7.

[0072] The utility model arranges an upper radial limit assembly 2 and a lower radial limit assembly 8 outside the rotating shaft 1 to keep the rotating shaft 1 relatively stable in the radial direction during operation, thereby preventing the rotating shaft 1 from swinging in the radial direction. The radial limit assemblies are arranged on both the upper and lower sides, thereby further enhancing the stability of the rotating shaft 1 in the radial direction; the upper axial support assembly 3 and the lower axial support assembly 7 achieve better low-friction starting and operation.

[0073] In this embodiment, according to the types of the radial limiting component and the axial supporting component, it can be a mechanical component or a magnetic suspension component, or a hybrid component of the two.

[0074] One is that both the radial limiting component and the axial supporting component adopt mechanical components, the radial limiting component adopts a mechanical bearing, and the axial supporting component is a ball or roller.

[0075] The second type is that the radial limit component uses a mechanical component such as a mechanical bearing, and the axial support component uses a magnetic levitation component. The magnetic levitation component is electromagnetic suspension, including an axial iron core and an axial electromagnetic coil. An axial iron yoke or an axial magnet is provided on the rotor ring, or the rotor ring is made of ferromagnetic material, so that the axial electromagnetic coil acts on the rotor ring to generate magnetic force.

[0076] The third type is that the radial limit component adopts a magnetic levitation component, while the axial support component adopts a mechanical component such as a ball or roller. The magnetic levitation component is electromagnetic suspension, including a radial iron core and a radial electromagnetic coil. A radial iron yoke or a radial magnet is arranged on the radial rotating shaft 1, or the rotating shaft 1 is made of ferromagnetic material, so that the radial electromagnetic coil acts on the rotating shaft to generate magnetic force.

[0077] In addition, the radial limit assembly can also adopt permanent magnetic suspension, and two permanent magnets with the same magnetic properties are respectively installed on the rotating shaft 1 and at a position radially opposite to the rotating shaft 1.

[0078] The fourth type is that both the radial limit assembly and the axial support assembly adopt an electromagnetic suspension system.

[0079] Both the radial limiting assembly and the axial supporting assembly adopt electromagnetically controllable magnetic suspension assemblies, which is conducive to axial and radial control according to actual conditions.

[0080] Example 7

[0081] The difference between this embodiment and embodiment 6 is that Figure 1 and Figure 3 As shown, a bracket 9 is connected to the outside of the motor stator 5, and the bracket 9 is respectively connected to the upper radial limit assembly 2, the lower radial limit assembly 8, the upper axial support assembly 3 and the lower axial support assembly 7. On the one hand, the bracket 9 fixes the motor stator 5, and on the other hand, the bracket 9 is connected to the outside of the motor stator 5, the radial limit assembly and the axial support assembly. The heat generated by the driving coil in the motor stator 5 and the electromagnetic coil of the radial limit assembly and the axial support assembly will be conducted to the bracket 9 for passive heat dissipation.

[0082] In this embodiment, the bracket 9 is clamped with the grooves set on the upper radial limit assembly 2, the lower radial limit assembly 8, the upper axial support assembly 3 and the lower axial support assembly 7 through the clamping claws. On the one hand, the clamping is tight, and on the other hand, the contact area can be increased to facilitate heat dissipation.

[0083] In this embodiment, the bracket 9 is fixed to the coil sleeve 14 by welding, and the bracket 9 is also used to connect the motor with other components.

[0084] The heat dissipation working principle of this utility model:

[0085] The dual-rotor motor structure drives the shaft 1 to rotate, and the drive coil on the motor stator 5 will generate heat, which will be transferred through two heat dissipation methods: active heat dissipation and passive heat dissipation.

[0086] Passive heat dissipation: The heat generated by the coil is directly exchanged with the external airflow through the duct structure 10 and the heat generated by the coil is transferred to the bracket 9, and then heat is exchanged with the external air for heat dissipation;

[0087] Active heat dissipation: The rotation of the rotating shaft 1 drives the heat dissipation component 101 to rotate. The rotation of the heat dissipation component 101 forms a negative pressure space in the central duct, and the external air flow is sucked into the central duct through the duct between the upper and lower rotor rings and the motor stator 5. It is then thrown out through the heat dissipation channel 15 under the impact of the heat dissipation component 101. The thrown air flow will take away the heat on the coil sleeve 14, thereby achieving cooling inside the motor.

[0088] Example 8

[0089] The difference between this embodiment and the above embodiment is that the disc motor includes N+1 rotor rings and N motor stators 5. The N+1 rotor rings and the N motor stators 5 constitute N bilateral motors. Based on the axial direction of the rotating shaft 1, the rotor ring located at the uppermost end in the axial direction is the first rotor ring, the rotor ring located at the lowermost end in the axial direction is the second rotor ring, and the rotor ring located between the first rotor ring and the second rotor ring is the third rotor ring. N is a natural number greater than or equal to 2.

[0090] In the present invention, the “axial direction” refers to the direction along the axis of the rotating shaft 1 , and the “radial direction” refers to the direction perpendicular to the axis of the rotating shaft 1 .

[0091] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A disc motor heat dissipation structure, characterized in that: include: heat dissipation component (101), duct structure (10) and heat dissipation channel (15), The gaps between the motor stator (5), the upper rotor ring (4), the lower rotor ring (6) and the rotating shaft (1) form the duct structure (10); the heat dissipation channel (15) is arranged on the motor stator (5) and is respectively in communication with the duct structure (10) and the outside world; the rotating shaft (1) is provided with a heat dissipation component (101) at the duct structure (10); and the upper rotor ring (4) and / or the lower rotor ring (6) are driving rotor rings that can generate rotational drive with the motor stator (5).

2. A disc motor heat dissipation structure according to claim 1, characterized in that: A circumferential inner recess (102) is provided on the rotating shaft (1), the heat dissipation assembly (101) is arranged circumferentially along the inner recess (102), and the motor stator (5), the upper rotor ring (4), the lower rotor ring (6) and the inner recess (102) form the duct structure (10).

3. A disk motor heat dissipation structure according to claim 1 or 2, characterized in that: The rotating shaft (1) is provided with a middle sleeve (13), the heat dissipation assembly (101) is provided on the outside of the middle sleeve (13), the upper rotor ring (4) is provided with an upper sleeve (11) and is sleeved on the rotating shaft (1) through the upper sleeve (11), the lower rotor ring (6) is provided with a lower sleeve (12) and is sleeved on the rotating shaft (1) through the lower sleeve (12), and the motor stator (5), the upper rotor ring (4), the lower rotor ring (6) and the middle sleeve (13) form the duct structure (10).

4. The disc motor heat dissipation structure according to claim 1, characterized in that: The heat dissipation component (101) is a flow-guiding structure, which is used to drive the airflow out as the rotating shaft (1) rotates to perform active heat dissipation.

5. A disk motor heat dissipation structure according to any one of claims 1, 2 or 4, characterized in that: A coil sleeve (14) is provided on the motor stator (5), and the heat dissipation channel (15) is provided on the coil sleeve (14).

6. A disc motor, characterized in that: It comprises the motor heat dissipation structure according to any one of claims 1 to 5.

7. The disc motor according to claim 6, characterized in that: The upper rotor ring (4) and the lower rotor ring (6) are both driving rotor rings that can generate rotational drive with the motor stator (5). The upper rotor ring (4) and the lower rotor ring (6) are both fixedly connected to the rotating shaft (1). The motor stator (5) is located between the upper rotor ring (4) and the lower rotor ring (6). The gaps between the upper rotor ring (4), the lower rotor ring (6), the motor stator (5) and the rotating shaft (1) form the duct structure (10).

8. A disc motor according to claim 6 or 7, characterized in that: A radial limiting assembly and / or an axial supporting assembly is further provided outside the rotating shaft (1); the radial limiting assembly is located above the upper rotor ring (4) and / or below the lower rotor ring (6); the axial supporting assembly is located between the radial limiting assembly and the upper rotor ring (4), and / or the axial supporting assembly is located between the radial limiting assembly and the lower rotor ring (6).

9. The disc motor according to claim 8, characterized in that: The radial limiting assembly comprises an upper radial limiting assembly (2) and a lower radial limiting assembly (8); the axial supporting assembly comprises an upper axial supporting assembly (3) and a lower axial supporting assembly (7); the upper axial supporting assembly (3) is located above the upper rotor ring (4); the lower axial supporting assembly (7) is located below the lower rotor ring (6); the upper radial limiting assembly (2) is located above the upper axial supporting assembly (3); and the lower radial limiting assembly (8) is located below the lower axial supporting assembly (7).

10. A disc motor according to claim 6 or 7, characterized in that: The invention comprises N+1 rotor rings and N motor stators (5), wherein the N+1 rotor rings and the N motor stators (5) constitute N bilateral motors, wherein, based on the axial direction of the rotating shaft (1), the rotor ring located at the uppermost end in the axial direction is the first rotor ring, the rotor ring located at the lowermost end in the axial direction is the second rotor ring, and the rotor ring located between the first rotor ring and the second rotor ring is the third rotor ring, and N is a natural number greater than or equal to 2.

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