Motor cooling system and method adopting staggered-aperture ventilation hole design

Abstract

The invention discloses a motor cooling system and method with staggered-aperture ventilation holes, and relates to the field of motor heat management. In order to solve the technical problems that in the prior art, an existing motor heat dissipation mode is high in cost, the optimal heat dissipation effect is difficult to achieve under the condition of high power density, and local hot spots occur due to uneven ventilation and unreasonable airflow paths in high-power application, the invention provides a motor heat dissipation device. According to the technical scheme, the motor cooling system with the staggered-aperture ventilation hole design comprises a motor stator shell, and at least four through holes are formed in the motor stator shell and arranged in the circumferential direction of the stator shell to serve as ventilation holes. The number of the ventilation holes is even. The ventilation holes comprise large-aperture holes and small-aperture holes, and the large-aperture holes and the small-aperture holes are arranged in a staggered mode. And taking a result of the multi-objective optimization design as an arrangement mode of the through holes. The motor heat dissipation device is suitable for motor heat dissipation work.

Description

Technical Field

[0001] The invention relates to the field of thermal management of electric motors, and in particular to a method of optimizing the heat dissipation performance and structural strength of electric motors by designing circular ventilation holes with staggered apertures. Background Art

[0002] With the continuous development of motor technology, motors have been widely used in industries, transportation, and household appliances. In particular, the demand for high-power density motors in electric vehicles, wind power generation, and other fields is increasing. In order to cope with the high heat generated inside the motor, the traditional motor heat dissipation methods are mainly the following:

[0003] 1. Cooling water channel design: Cooling water channels are designed inside the stator or rotor of the motor to remove heat through water cooling. Although this method can effectively reduce the temperature, it increases the manufacturing complexity and cost of the motor, and it is difficult to achieve the best heat dissipation effect under high power density conditions.

[0004] 2. Fan-assisted cooling: Install a fan inside or outside the motor to enhance airflow and achieve heat dissipation. However, this method will encounter many limitations in some high-power applications, such as uneven ventilation and unreasonable airflow paths, which will lead to the appearance of local hot spots and affect cooling efficiency.

[0005] 3. Uniform aperture vent design: Traditional motor vent design usually uses equal diameter vents, focusing on the airflow, without optimizing according to the heat dissipation requirements of different areas of the motor. Although the uniformly arranged apertures can provide a certain cooling effect, the uneven ventilation path can easily lead to local hot spots and fail to fully utilize the cooling air potential.

[0006] In addition, as the power density of motors continues to increase, the mechanical stress on components such as stators and rotors is also increasing. If the ventilation holes are not designed properly, the structural strength of the stator or rotor may be weakened, leading to damage in high-stress areas. Especially at high-speed operation, the arrangement and size of the holes will affect the overall structural safety. At the same time, the traditional equal-diameter ventilation hole design may also cause turbulence under certain high-speed operating conditions, further reducing the heat dissipation efficiency.

[0007] In response to these problems, the prior art has proposed some improvement measures, such as increasing the number of ventilation holes, changing the shape of the holes, or setting up complex cooling channels, but these methods have more or less limitations. Increasing the number of ventilation holes can increase the amount of airflow, but it will weaken the mechanical strength of the motor; while the complex cooling channel design increases the difficulty and cost of production, and may not necessarily achieve the best heat dissipation effect.

[0008] Therefore, how to design an efficient heat dissipation ventilation hole layout while ensuring the structural strength of the motor, which can not only optimize the airflow distribution and reduce the airflow resistance, but also improve the overall heat dissipation performance of the motor, has become one of the important research directions in current motor design. Summary of the invention

[0009] In order to solve the existing problems in the prior art, the existing motor heat dissipation method is high in cost and difficult to achieve the best heat dissipation effect under high power density conditions, and the technical problems such as uneven ventilation and unreasonable airflow paths that lead to the appearance of local hot spots in high power applications, the technical solution provided by the present invention is:

[0010] A motor cooling system with staggered aperture ventilation holes includes a motor stator shell. The motor stator shell is provided with at least four through holes arranged along the circumference of the stator shell as ventilation holes.

[0011] Furthermore, a preferred embodiment is provided, wherein the number of the ventilation holes is an even number.

[0012] Furthermore, a preferred embodiment is provided, wherein the ventilation holes have large-diameter holes and small-diameter holes, and the large-diameter holes and the small-diameter holes are arranged alternately.

[0013] Furthermore, a preferred embodiment is provided, wherein the diameter of the large-aperture hole is 5-10 mm, and the diameter of the small-aperture hole is 2-5 mm.

[0014] Furthermore, a preferred embodiment is provided, in which the result of multi-objective optimization design is used as the arrangement of the through holes.

[0015] Furthermore, a preferred embodiment is provided, wherein the multi-objective optimization algorithm is implemented based on computational fluid dynamics simulation.

[0016] Based on the same inventive concept, the present invention also provides a motor cooling method with staggered aperture ventilation holes, which is implemented based on the cooling system and includes:

[0017] The step of collecting the internal temperature signal of the motor and the air flow state signal;

[0018] A step of obtaining control parameters of the ventilation holes according to the internal temperature signal of the motor and the airflow state signal;

[0019] A step of generating an adjustment signal for the ventilation hole according to a multi-objective optimization algorithm;

[0020] The step of obtaining a control signal for opening and closing the through-hole air flow according to the adjustment signal.

[0021] Based on the same inventive concept, the present invention also provides a computer storage medium for storing a computer program. When the computer reads the computer program, the computer executes the method described.

[0022] Based on the same inventive concept, the present invention also provides a computer, including a processor and a storage medium. When the processor reads a computer program stored in the storage medium, the computer executes the method described.

[0023] Based on the same inventive concept, the present invention also provides a computer program product, which is a computer program. When the computer program is executed, the method described above is implemented.

[0024] Compared with the prior art, the technical solution provided by the present invention is beneficial in that:

[0025] The staggered aperture vent design significantly improves airflow uniformity and heat dissipation efficiency. By staggering large and small holes, cooling air can be more evenly distributed throughout the heat dissipation channel, avoiding the problem of local hot spots in traditional uniform aperture designs. This uniform airflow distribution significantly reduces temperature differences inside the motor and improves overall heat dissipation performance.

[0026] The application of multi-objective optimization algorithm effectively balances the contradiction between heat dissipation performance and mechanical strength. The traditional method of increasing the number of ventilation holes can improve the heat dissipation effect, but it will reduce the structural strength of the motor. However, this solution maximizes the heat dissipation performance without significantly weakening the mechanical strength by optimizing the ratio and arrangement of large and small holes. This optimized design allows the motor to maintain structural stability at high speeds.

[0027] The auxiliary cooling function of the small-aperture vents reduces turbulence and improves the smoothness of the cooling air flow. Compared with the traditional uniform aperture design, the staggered small hole design can effectively smooth the airflow, reduce turbulence and airflow resistance, and reduce energy loss caused by eddy currents, thereby improving the overall efficiency of the cooling system.

[0028] By performing multi-objective optimization on the aperture size, number and arrangement of the ventilation holes, it is ensured that the cooling system can maintain efficient heat dissipation under various working conditions. Compared with the method of simply increasing the number of ventilation holes or designing complex cooling water channels, the method of the present invention improves the cooling efficiency while reducing production costs and complexity, and is more suitable for application scenarios of high power density motors.

[0029] Suitable for use in motor heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of the motor cooling system;

[0031] Figure 2 for Figure 1 The main view;

[0032] Figure 3 This is the particle path simulation result diagram before the ventilation hole is improved;

[0033] Figure 4 This is the simulation result of the particle path after the ventilation hole is improved;

[0034] Among them, 1 represents the stator, 2 represents the ventilation hole, 3 represents the rotor, and 4 represents the winding. DETAILED DESCRIPTION

[0035] In order to make the advantages and benefits of the technical solution provided by the present invention more clearly reflected, the technical solution provided by the present invention is now further described in detail in conjunction with the accompanying drawings, specifically:

[0036] Embodiment 1: This embodiment provides a motor cooling system designed with staggered aperture ventilation holes 2, including a motor stator 1 shell, on which the motor stator 1 shell is provided with at least four through holes arranged along the circumference of the stator 1 shell as ventilation holes 2.

[0037] Embodiment 2: This embodiment further limits the motor cooling system designed with staggered aperture ventilation holes 2 provided in Embodiment 1, and the number of the ventilation holes 2 is an even number.

[0038] Embodiment 3: This embodiment further limits the motor cooling system designed with staggered aperture ventilation holes 2 provided in embodiment 2. The ventilation holes 2 have large aperture holes and small aperture holes, and the large aperture holes and the small aperture holes are arranged in a staggered manner.

[0039] Embodiment 4: This embodiment further limits the motor cooling system with staggered aperture ventilation holes 2 provided in embodiment 3, wherein the diameter of the large aperture holes is 5-10 mm, and the diameter of the small aperture holes is 2-5 mm.

[0040] Embodiment 5: This embodiment further limits the motor cooling system designed with staggered aperture ventilation holes 2 provided in embodiment 3, and uses the result of multi-objective optimization design as the arrangement of the through holes.

[0041] Embodiment 6: This embodiment further limits the motor cooling system designed with staggered aperture ventilation holes 2 provided in embodiment 5, and the multi-objective optimization algorithm is implemented based on computational fluid dynamics simulation.

[0042] Specifically, the motor cooling system provided in this embodiment is as follows:

[0043] 1. Components of a device or system

[0044] 1. Motor stator 1 housing: contains ventilation holes 2 and is used to carry the internal components of the motor.

[0045] 2. Large-aperture ventilation holes 2: designed on the outer shell of the motor stator 1, serving as the main air flow channel.

[0046] 3. Small aperture vents 2: staggered between large holes to aid cooling and smooth airflow.

[0047] 4. Rotor 3: Located inside the motor, it generates mechanical power through rotation.

[0048] 5. Cooling system: includes air flow channels to ensure that cooling air flows effectively through the ventilation holes 2.

[0049] 6. Control device (including multi-objective optimization algorithm): used to optimize the arrangement and design of the ventilation holes 2 to achieve the best heat dissipation performance and mechanical strength.

[0050] 2. Functional description of components

[0051] 1. Motor stator 1 housing: carries the stator 1 and rotor 3 of the motor, provides physical support for the entire cooling system, and supports the distribution of ventilation holes 2.

[0052] 2. Large aperture ventilation holes 2: used to guide the main airflow into the interior of the motor and to centrally cool high temperature areas, such as the stator 1 winding 4 and the rotor 3 magnets.

[0053] 3. Small aperture vents 2: Assist large aperture cooling, reduce turbulence, ensure uniform airflow, and avoid hot spots.

[0054] 4. Rotor 3: During the operation of the motor, mechanical energy is generated by rotation, and the heat dissipated needs to be dissipated in time through the cooling system.

[0055] 5. Cooling system: Through the combination of large and small holes, the flow path of cooling air is optimized, turbulence is reduced, and the cooling effect is ensured to be stable and efficient.

[0056] 6. Control device: A multi-objective optimization algorithm is used to determine the optimal layout of the ventilation holes 2 to achieve a balance between heat dissipation efficiency and structural strength.

[0057] 3. Connections and interactions between components

[0058] 1. Connection between the motor stator 1 housing and the ventilation holes 2: Large holes and small holes are designed on the stator 1 housing in a staggered manner to ensure that the best cooling effect can be obtained when the airflow passes through without affecting the structural strength.

[0059] 2. Staggered arrangement of large-diameter and small-diameter ventilation holes 2: Large holes are preferentially arranged in the heat source concentrated area, and small holes fill the gaps between the large holes to form a uniform cooling air flow channel to avoid the occurrence of local hot spots.

[0060] 3. Interaction between the rotor 3 and the stator 1: When the motor is running, the heat generated by the rotor 3 is taken away by the cooling air through the staggered ventilation holes 2. The design of the cooling system ensures that the cooling airflow can effectively flow through the space between the stator 1 and the rotor 3.

[0061] 4. Interaction between the cooling system and the control device: The control device uses a multi-objective optimization algorithm to optimize the arrangement of the ventilation holes 2, so that the cooling system can ensure an efficient airflow path and heat dissipation effect under different working conditions.

[0062] 4. Coordination of components and overall function

[0063] 1. The design of the ventilation holes 2 is coordinated with the cooling system: by designing large holes and small holes on the stator 1 shell, a main cooling channel and an auxiliary cooling channel are formed, so that the air flow can flow effectively, covering the key parts inside the motor and improving the heat dissipation efficiency.

[0064] 2. Application of multi-objective optimization algorithm: The control device maximizes the heat dissipation effect while maintaining the structural strength of the motor by optimizing the aperture, number and arrangement of the ventilation holes 2. This design is suitable for high-power density motors, and solves the performance and life problems caused by high temperature while ensuring the long-term stable operation of the motor.

[0065] 3. Coordinated operation of the overall cooling system: The design of the cooling system enables cooling air to flow through various high-heat areas of the motor, reducing turbulence and airflow resistance, thereby improving the uniformity of the internal temperature of the motor and improving cooling stability and efficiency in high-power application scenarios.

[0066] Embodiment 7: This embodiment provides a motor cooling method with staggered aperture ventilation holes 2, which is implemented based on the cooling system provided in embodiment 1, and includes:

[0067] The step of collecting the internal temperature signal of the motor and the air flow state signal;

[0068] A step of obtaining control parameters of the ventilation hole 2 according to the motor internal temperature signal and the airflow state signal;

[0069] A step of generating an adjustment signal for the ventilation hole 2 according to a multi-objective optimization algorithm;

[0070] The step of obtaining a control signal for opening and closing the through-hole air flow according to the adjustment signal.

[0071] Embodiment 8: This embodiment provides a computer storage medium for storing a computer program. When the computer reads the computer program, the computer executes the method provided in embodiment 7.

[0072] Embodiment 9: This embodiment provides a computer, including a processor and a storage medium. When the processor reads a computer program stored in the storage medium, the computer executes the method provided in embodiment 7.

[0073] Embodiment 10: This embodiment provides a computer program product, which is a computer program. When the computer program is executed, the method provided in embodiment 7 is implemented.

[0074] Implementation Method XI: Combination Figure 1-4 This embodiment is described in detail by using specific examples to further describe the technical solution provided above. Specifically:

[0075] This embodiment aims to maximize the heat dissipation performance of the motor while maintaining the mechanical strength of the motor by adopting a staggered aperture ventilation hole 2 design in the motor structure. This design method combines the staggered arrangement of large and small holes to optimize the airflow path and reduce turbulence, making the cooling effect more uniform and efficient, and is suitable for high power density motor applications.

[0076] include:

[0077] Structural design of ventilation hole 2:

[0078] Ventilation holes 2 of different sizes are evenly distributed on the stator 1 shell of the motor. The large holes are used for the main airflow channel, and the small holes play a role in auxiliary cooling and smoothing the airflow. The large hole diameter is designed to be 5-10 mm, and the small hole diameter is 2-5 mm, see the attached Figure 1 , the specific aperture size is set according to the power and cooling requirements of the motor.

[0079] According to the motor structure diagram in the figure, the ventilation holes 2 are distributed along the circumference of the motor and are optimally arranged according to the heat source distribution and cooling requirements of the stator 1 and the rotor 3. The large holes are preferentially arranged in the area close to the heat source to improve the cooling efficiency, while the small holes are staggered between the large holes to effectively improve the airflow distribution and avoid local overheating.

[0080] Ventilation hole 2 arrangement and optimization:

[0081] The staggered arrangement of the apertures is in line with the circular symmetry of the motor design. The large and small apertures are symmetrically arranged at an angle of 30°, 45° or 60° on the circumference to ensure smooth airflow and reduce turbulence. The larger apertures are preferentially arranged in areas that require concentrated cooling, while the smaller apertures are distributed around the large apertures to further smooth the airflow and ensure that the airflow flows evenly through the space between the stator 1 and the rotor 3.

[0082] In the motor structure diagram, see attached Figure 2 The outer ring of the stator 1 is arranged with a larger aperture to maximize the airflow entry and exhaust channels; the small holes in the inner ring are used to further guide the airflow to ensure the uniformity of the cooling effect.

[0083] The effects of the technical solution provided by this implementation are as follows:

[0084] 1. Optimize air flow uniformity and improve heat dissipation efficiency:

[0085] By staggering the large and small holes, the cooling air can be more evenly distributed throughout the heat dissipation channel. Figure 3 and Figure 4 ) shows that the airflow spreads outward from the center, with smooth streamlines and consistent directions, avoiding the local airflow stagnation and vortex phenomena that occurred in the design before the improvement. The optimized airflow distribution not only improves the cooling efficiency, but also ensures the uniformity of the temperature inside the motor and avoids local overheating.

[0086] 2. Reduce turbulence and airflow resistance:

[0087] The improved design significantly reduces the formation of turbulence and eddies. The staggered aperture design helps smooth the airflow and reduce flow resistance, allowing the cooling air to pass through the entire cooling system more smoothly. This design effectively reduces the energy loss caused by eddies, thereby improving the overall efficiency of the cooling system and extending the working life of the motor at high power density.

[0088] 3. Improve the stability of cooling effect:

[0089] The particle path diagram shows that the improved design maintains a stable airflow path in different areas, and the airflow is no longer dispersed or deflected due to the uneven design. This stable airflow distribution ensures the continuity of the cooling effect, allowing the motor to maintain a suitable operating temperature during long-term high-load operation, further improving the reliability of the system.

[0090] 4. Enhance structural strength while meeting the need for efficient heat dissipation:

[0091] The improved design improves the heat dissipation efficiency while maintaining the mechanical strength of the motor. Reasonable aperture and distribution reduce the weakening of the motor structure, ensuring that the system still has sufficient mechanical strength and stability when running at high speed, thereby extending the service life of the equipment. It is suitable for high-power motors with extremely high requirements for strength and heat dissipation performance.

[0092] The improved vent 2 design significantly optimizes the distribution of airflow, reduces eddies and turbulence, improves heat dissipation efficiency and stability, and maintains structural strength while meeting heat dissipation requirements. This design is particularly suitable for high-power density applications that require efficient heat dissipation, such as electric vehicles, industrial motors, and wind turbines.

[0093] Specific:

[0094] The design method is:

[0095] By optimizing the aperture size and arrangement, the heat dissipation effect is maximized and the mechanical structural strength of the motor is guaranteed. This method is particularly suitable for the thermal management needs of high power density motors, such as electric vehicle drive motors, industrial motors and wind turbines.

[0096] 1. Aperture selection and arrangement principles

[0097] In motor design, different parts have different heat dissipation requirements. For example, areas close to heat sources (such as stator 1 windings 4) require stronger cooling capacity, while areas far from the heat source can appropriately reduce the density of ventilation holes 2. Therefore, this embodiment proposes a staggered arrangement of two different apertures to meet cooling requirements and ensure the mechanical strength of the motor.

[0098] Large aperture design:

[0099] The role of the large aperture is to provide a larger cooling air flow rate in the main airflow channel to help quickly discharge the heat in the stator 1 or rotor 3. The large aperture is usually arranged near the heat source of the motor and in areas with higher cooling requirements.

[0100] Large aperture range: The large aperture is generally set in the range of 5mm to 10mm, and the specific size is selected according to the power level, speed and thermal load of the motor. A large aperture will lead to a decrease in mechanical strength, while a small aperture will affect the heat dissipation effect.

[0101] Arrangement rules: The large holes are usually evenly distributed along the periphery of the stator 1 or rotor 3 to ensure that the main airflow can effectively pass through the motor.

[0102] Small aperture design:

[0103] The role of small apertures: used to assist cooling, mainly to smooth the airflow, reduce turbulence in the airflow, and ensure uniform airflow distribution, especially in areas that large holes cannot cover. At the same time, the design of small holes can also provide additional heat dissipation channels without significantly weakening the mechanical strength.

[0104] Small aperture range: The small aperture is usually in the range of 2mm to 5mm, and the specific size is optimized based on the structural size and cooling requirements of the motor.

[0105] Arrangement rules: Small holes are staggered between large holes to form a uniform airflow distribution and avoid the generation of local hot spots.

[0106] 2. Aperture arrangement design

[0107] One of the innovations of this embodiment is the staggered arrangement of apertures. In the traditional design of motor ventilation holes 2, the ventilation holes 2 are mostly arranged with equal spacing and equal apertures, which makes it difficult to achieve optimized cooling of different parts. However, this embodiment can effectively improve the distribution of airflow by staggering large and small apertures, and maximize the potential of cooling air.

[0108] Circular staggered arrangement:

[0109] Arrangement: Based on the circular structure of the motor, large and small holes are arranged alternately on the outer circumference of the stator 1 and the rotor 3. Specifically, on the circumference of each circle, large holes and small holes are arranged alternately. Large holes are preferentially arranged in the heat source concentrated area, while small holes are arranged in other areas to form a uniform ventilation channel.

[0110] Arrangement angle: According to the size and cooling requirements of the stator 1 and the rotor 3, the apertures can be arranged symmetrically at angles such as 30°, 45°, and 60°. The specific angle can be adjusted according to the cooling simulation results.

[0111] Number of circles design: For larger motors, you can design a multi-circle staggered aperture arrangement. The outer circle mainly uses large holes, and the inner circle mainly uses small holes to ensure that the cooling effect gradually transitions from the outside to the inside.

[0112] 3. Multi-objective optimization design

[0113] In order to achieve the best effect of the design of the ventilation holes 2, this embodiment uses a multi-objective optimization algorithm to finely optimize the aperture size, number and arrangement of the ventilation holes 2. The optimization objectives mainly include the following aspects:

[0114] Cooling performance optimization:

[0115] Optimization goal: maximize the conduction and dissipation of heat inside the motor, reduce local overheating, and ensure that the temperature of key motor components (such as stator 1 winding 4, rotor 3 magnets, etc.) remains within a safe range.

[0116] Optimization tool: Use computational fluid dynamics (CFD) to simulate the impact of different vent 2 arrangements on airflow distribution and find the best airflow path. CFD simulation can accurately simulate the flow path, velocity and pressure distribution of airflow, thereby optimizing the layout of vent 2.

[0117] Simulation result analysis: The simulation analysis results will show the temperature distribution and pressure loss when the airflow passes through the motor stator 1 and rotor 3. By adjusting the ratio, spacing and angle of large and small holes, the uniformity of the airflow and the ventilation effect can be further optimized.

[0118] Mechanical structure strength optimization:

[0119] Optimization goal: Ensure that the design of the ventilation hole 2 provides sufficient heat dissipation performance while not significantly reducing the mechanical strength of the motor stator 1 or rotor 3 to avoid structural damage during high-speed operation.

[0120] Optimization tool: Finite element analysis (FEA) is used to simulate the mechanical structural strength of the ventilation holes 2, and analyze the impact of the hole diameter and arrangement on the strength of the stator 1 and the rotor 3. Stress analysis is used to ensure that the stator 1 and the rotor 3 will not crack or break in high stress areas.

[0121] Analysis of simulation results: According to the results of stress analysis, the number, size and position of large and small holes are adjusted to find the best balance between heat dissipation performance and structural strength.

[0122] Ventilation Resistance and Turbulence Control:

[0123] Optimization goal: Minimize airflow resistance, improve ventilation efficiency of cooling air, avoid turbulence caused by improper aperture arrangement, and thus improve overall heat dissipation efficiency.

[0124] Optimization tool: Combined with the flow resistance analysis in CFD simulation, the distribution and arrangement of the apertures are adjusted to ensure smooth airflow without excessive eddies or local turbulence.

[0125] 4. Experimental Verification

[0126] After the optimization design is completed, this implementation also includes the following experimental verification steps:

[0127] Prototype manufacturing: Produce motor prototypes based on simulation optimization results to ensure that the accuracy of the simulation design is maintained during the actual manufacturing process, especially in terms of hole size and arrangement.

[0128] Heat dissipation performance test:

[0129] Test tools: Use tools such as thermocouples and infrared thermal imagers to monitor the temperature of various motor components and analyze the temperature rise under different working conditions.

[0130] Test content: Measure the temperature of key parts such as the motor stator 1 winding 4, rotor 3 magnet steel, and iron core to ensure uniform temperature distribution and verify the validity of the simulation results.

[0131] Mechanical strength test:

[0132] Test tools: Use tools such as dynamic balancing test and high-speed rotation test to test the mechanical strength of the motor under high-speed operation to ensure that the design of ventilation hole 2 will not cause structural damage.

[0133] Data analysis and adjustment: Based on the experimental data feedback, the aperture design is further optimized to ultimately determine the optimal aperture size, arrangement, and quantity settings.

[0134] The technical solution provided by the present invention is further described in detail above through several specific implementation modes in order to highlight the advantages and benefits of the technical solution provided by the present invention. However, the several specific implementation modes described above are not intended to be used as limitations on the present invention. Any reasonable modification and improvement of the present invention, combination of implementation modes and equivalent substitution within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A motor cooling system with staggered aperture ventilation holes, comprising a motor stator housing, characterized in that: The motor stator shell is provided with at least four through holes which are arranged along the circumference of the stator shell and serve as ventilation holes.

2. The motor cooling system with staggered aperture ventilation holes according to claim 1, characterized in that: The number of the ventilation holes is an even number.

3. The motor cooling system with staggered aperture ventilation holes according to claim 2, characterized in that: The ventilation holes include large-diameter holes and small-diameter holes, and the large-diameter holes and the small-diameter holes are arranged alternately.

4. The motor cooling system with staggered aperture ventilation holes according to claim 3, characterized in that: The diameter of the large-aperture hole is 5-10 mm, and the diameter of the small-aperture hole is 2-5 mm.

5. The motor cooling system with staggered aperture ventilation holes according to claim 3, characterized in that: The result of multi-objective optimization design is used as the arrangement of the through holes.

6. The motor cooling system with staggered aperture ventilation holes according to claim 5, characterized in that: The multi-objective optimization algorithm is implemented based on computational fluid dynamics simulation.

7. A motor cooling method with staggered aperture ventilation holes, characterized in that: The cooling system according to claim 1 is implemented, comprising: The step of collecting the internal temperature signal of the motor and the air flow state signal; A step of obtaining control parameters of the ventilation holes according to the internal temperature signal of the motor and the airflow state signal; A step of generating an adjustment signal for the ventilation hole according to a multi-objective optimization algorithm; The step of obtaining a control signal for opening and closing the through-hole air flow according to the adjustment signal.

8. A computer storage medium for storing a computer program, characterized in that: When the computer reads the computer program, the computer executes the method of claim 7.

9. A computer, comprising a processor and a storage medium, characterized in that: When the processor reads the computer program stored in the storage medium, the computer executes the method of claim 7 .

10. A computer program product, being a computer program, characterized in that When the computer program is executed, the method of claim 7 is implemented.

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