Heat dissipation structure of nanocrystalline disc type motor

Abstract

The utility model relates to a kind of heat dissipation structure of nanocrystalline disc type motor, belong to motor technical field, including a pair of mirror image bolt connection fixed motor cover plate disc, the motor cover plate disc outer circle is equipped with several air outlet holes, the lower end of the motor cover plate disc is equipped with the mounting base that is integrated with motor cover plate disc, the middle part of the motor cover plate disc is equipped with the hollow shaft that is embedded with the penetration type of both ends of motor cover plate disc, the hollow shaft inner wall is equipped with several air inlet holes that are connected with air outlet hole. With the characteristics of simple structure and high integration, a multi-channel and composite heat dissipation system is used. Internal forced air cooling, external natural convection and lightweight design are combined to address the heat dissipation challenges brought by high power density of nanocrystalline motor.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, specifically to a heat dissipation structure for a nanocrystalline disk electric motor. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It utilizes a rotating magnetic field generated by an energized coil (i.e., the stator winding) to act on the rotor (such as a squirrel-cage closed aluminum frame), creating a magnetoelectric torque. The electric motor is cooled by a fan at the end of the shaft and an air inlet at the end of the casing, which communicates with the inner cavity of the casing containing the rotor. The fan rotates with the shaft, blowing air from back to front to cool the motor.

[0003] Nanocrystalline disc motors refer to electric motors that use nanocrystalline alloys as the core magnetic material and have a disc-shaped (or dish, axial magnetic field motor) structure. Unlike traditional radial magnetic field motors, disc motors have their stator and rotor arranged in parallel discs, with the magnetic field distributed axially. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a heat dissipation structure for a nanocrystalline disk motor. This structure is characterized by its simplicity and high integration, employing a multi-channel and composite heat dissipation system. It combines internal forced air cooling, external natural convection, and a lightweight design to meet the heat dissipation challenges posed by the high power density of nanocrystalline motors.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions: A heat dissipation structure for a nanocrystalline disk-type electric motor includes a pair of motor cover plates that are fixed in a mirror-shaped bolted connection. Each motor cover plate has several air outlet holes on its outer circumference. Each motor cover plate has an integrated mounting base at its lower end. A hollow shaft is provided in the middle of the motor cover plate and is nested through both ends of the motor cover plate. The inner wall of the hollow shaft has several air inlet holes that communicate with the air outlet holes.

[0006] Preferably, both ends of the hollow shaft are provided with sealing plates that are bolted to and fixed to the motor cover plate.

[0007] Preferably, the motor cover plate is provided with a lightweight groove on its side end face. The lightweight groove adopts an outer oval groove structure, and the oval groove and the sealing plate adopt a fan-shaped groove structure.

[0008] Preferably, the outer circumference of the motor cover plate is provided with several pairs of heat dissipation plates that communicate with the oval groove.

[0009] Preferably, the upper end of the motor cover plate is provided with an oil injection connector.

[0010] Preferably, the side of the motor cover plate is provided with an electrical box that communicates with the inner cavity of the motor cover plate.

[0011] This invention can achieve the following effects: This invention provides a heat dissipation structure for a nanocrystalline disk motor. Compared with existing technologies, it features a simple structure and high integration, employing a multi-channel and composite heat dissipation system. It combines internal forced air cooling, external natural convection, and a lightweight design to address the heat dissipation challenges posed by the high power density of nanocrystalline motors.

[0012] High-efficiency composite heat dissipation: It combines internal forced air cooling, external fin heat dissipation and internal oil cooling, and its heat dissipation capacity far exceeds that of a single heat dissipation method, and can easily cope with the high heat flux density of nanocrystal motors.

[0013] Integrated structure and function: The hollow shaft serves as both the power output shaft and the air duct; the cover plate acts as the outer shell, radiator, and structural support; the lightweight channel is both a weight-reduction design and a flow guiding structure. The design is highly integrated, compact, and efficient.

[0014] Symmetry and uniformity: The 12 pairs of air inlets and outlets and the 36 pairs of heat dissipation plates are symmetrically distributed, ensuring uniform temperature distribution throughout the motor, avoiding local overheating, and extending the motor's lifespan.

[0015] Lightweight design: By using lightweight slots and an integrated structure, the weight of the motor is reduced to the minimum while ensuring heat dissipation and structural strength. This is crucial for weight-sensitive applications such as electric vehicles and drones.

[0016] Maintainability: The bolted cover plate and sealing plate, as well as the design of the oil filling joint, make the assembly, disassembly, and internal maintenance (such as changing the lubricant) of the motor relatively convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Air outlet; 2. Oil filling connector; 3. Motor cover plate; 4. Sealing plate; 5. Air inlet; 6. Electrical box; 7. Hollow shaft; 8. Lightweight groove; 9. Mounting base; 10. Heat sink. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0020] Example: Figure 1As shown, a heat dissipation structure for a nanocrystalline disk-type electric motor includes a pair of motor cover plates 3 fixed in a mirror-shaped bolted connection. Each motor cover plate 3 has an oil inlet 2 at its upper end. The outer circumference of each motor cover plate 3 has 12 pairs of air outlet holes 1. The lower end of each motor cover plate 3 has an integrated mounting base 9. An electrical box 6 communicating with the inner cavity of each motor cover plate 3 is located on its side. A hollow shaft 7, nested through both ends of the motor cover plate 3, is located in the middle of the motor cover plate 3. The inner wall of the hollow shaft 7 has 12 air inlet holes 5 communicating with the air outlet holes 1. Both ends of the hollow shaft 7 have sealing plates 4 bolted to and fixed to the motor cover plate 3. Lightweight grooves 8 are provided on the side surfaces of each motor cover plate 3. The lightweight grooves 8 have an outer oval groove structure, and a fan-shaped groove structure is used between the oval groove and the sealing plate 4. The outer circumference of the motor cover plate 3 has 36 pairs of heat dissipation plates 10 communicating with the oval grooves.

[0021] Internal forced air cooling circulation (core): Air intake: When the motor rotates, due to centrifugal effect or axial fan effect (if there are fan blades at the shaft end), external cold air is drawn in through the 12 air intake holes (5) on the inner wall of the hollow shaft 7.

[0022] Internal airflow: After entering the hollow shaft, the cool air flows axially, absorbing the heat generated by the motor stator and rotor (especially the heated nanocrystalline iron core and windings). The motor may be filled with a small amount of insulating oil, which is disturbed by the airflow, enhancing the internal heat exchange efficiency.

[0023] Exhaust: The air carrying heat is thrown towards the inner wall of the motor cover plate 3, and finally discharged at high speed through the 12 pairs of air outlet holes 1 on the outer circle, forming a continuous forced convection that efficiently removes the heat from the core of the motor.

[0024] External natural convection and radiation heat dissipation (auxiliary): Heat conduction: The heat inside the motor is conducted to the external heat sink 10 through the cover plate 3.

[0025] Convection cooling: The numerous heat sinks 10 greatly increase the contact area between the motor and the air. When the motor is running, the exhaust hot airflow and the airflow from the vehicle or equipment will flow over these heat sinks, forming natural or forced convection, continuously dissipating heat into the surrounding environment.

[0026] The auxiliary role of the lightweight slot: The lightweight slot 8 not only reduces weight, but its oval and fan-shaped structure also breaks the air boundary layer, allowing the airflow to more effectively scour the base of the heat sink and improve heat dissipation efficiency.

[0027] Internal oil cooling / lubrication (supplementary): Cooling oil injected through oil inlet 2 can wet the motor windings and core, efficiently absorbing heat through contact conduction. This heat is then carried away by the aforementioned internal air-cooling system. This oil mist / oil cooling method is particularly suitable for high-speed, high-power-density motors.

[0028] In summary, the heat dissipation structure of this nanocrystalline disk motor is characterized by its simple structure and high integration, employing a multi-channel and composite heat dissipation system. It combines internal forced air cooling, external natural convection, and a lightweight design to address the heat dissipation challenges posed by the high power density of nanocrystalline motors.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A heat dissipation structure for a nanocrystalline disk-type electric motor, characterized in that: It includes a pair of motor cover plates (3) that are fixed by bolts in a mirror-like manner. Each of the motor cover plates (3) has several air outlet holes (1) on its outer circle. Each of the motor cover plates (3) has an integrated mounting base (9) at its lower end. The motor cover plate (3) has a hollow shaft (7) in the middle that is nested through both ends of the motor cover plate (3). The hollow shaft (7) has several air inlet holes (5) on its inner wall that are connected to the air outlet holes (1).

2. The heat dissipation structure of a nanocrystalline disk motor according to claim 1, characterized in that: Both ends of the hollow shaft (7) are provided with sealing discs (4) that are bolted to and fixed to the motor cover plate (3).

3. The heat dissipation structure of a nanocrystalline disk motor according to claim 2, characterized in that: Lightweight grooves (8) are provided on the side end face of the motor cover plate (3). The lightweight grooves (8) adopt an outer oval groove structure, and the oval groove and the sealing plate (4) adopt a fan-shaped groove structure.

4. The heat dissipation structure of a nanocrystalline disk motor according to claim 3, characterized in that: The outer circle of the motor cover plate (3) is provided with several pairs of heat dissipation plates (10) that are connected to the oval groove.

5. The heat dissipation structure of a nanocrystalline disk motor according to claim 1, characterized in that: The motor cover plate (3) is equipped with an oil injection connector (2) at the upper end.

6. The heat dissipation structure of a nanocrystalline disk motor according to claim 1, characterized in that: The motor cover plate (3) is provided with an electrical box (6) on its side that communicates with the inner cavity of the motor cover plate (3).

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