A rapid modeling method for motor core flow channel

Abstract

The application discloses a kind of quick modeling methods of motor core flow channel, comprising the following steps: S1: sequentially create a plurality of punching sheet in three-dimensional mapping software and carry out axial stacking;S2: create spout on the ring model of iron core by stretching cut-off command;S3: create all spouts in the circumferential direction of iron core by circumferential array;S4: select one of the spouts, create spout reference surface by the diagonal surface of the outermost and innermost two spouts;S5: create effective injection area by stretching command;S6: cut off half of the model along the spout reference surface;S7: create injection inclination in sketch by converting entity reference, and draw the outer envelope of end winding;S8: then save the model;S9: assemble together with the model of tooth portion and with flow channel to create complete iron core assembly model;Modeling speed is fast, and model is adjusted fast.

Description

Technical Field

[0001] This invention relates to the field of computer modeling technology, and specifically to a rapid modeling method for the flow channel of an electric motor core. Background Technology

[0002] Currently, with the rapid development of the new energy vehicle industry, the requirements for motor power density are becoming increasingly stringent. Generally, increased power density is accompanied by increased motor losses. To quickly dissipate these losses and prevent overheating, a higher-performance cooling system is needed. Currently, oil-cooled flat-wire motors have become mainstream in the new energy vehicle industry, and product iterations are accelerating. To respond more quickly to market demands, a rapid modeling method for the motor core flow channels is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a rapid modeling method for the flow channel of an electric motor core. The modeling speed is fast and the model can be adjusted quickly. Only the parameters in step S2 need to be adjusted, and the other parameters will change accordingly. For example, the circumferential spray angle can be rotated clockwise or counterclockwise. In particular, for cores of different sizes, only the annular parameters in step one need to be adjusted.

[0004] A rapid modeling method for the flow channel of an electric motor core, provided by the present invention, includes the following steps:

[0005] S1: Create multiple laminations sequentially in 3D modeling software and stack them axially. The outer diameter of the iron core is the outer diameter of the laminations. The inner diameter is greater than the maximum outer envelope diameter of the winding slot bottom and less than the minimum outer envelope diameter of the iron core nozzle. The thickness is equal to the thickness of the stacked iron core, forming a ring-shaped model of the iron core with teeth.

[0006] S2: Create a nozzle on the annular model of the iron core using the extrude cut command, with the extruded dimension equal to the thickness of the stacked iron core;

[0007] S3: Create all nozzles along the circumference of the iron core using a circular array;

[0008] S4: Select one of the nozzles and create a nozzle reference plane using the diagonal faces of the outermost and innermost nozzles;

[0009] S5: Create the edge of the effective spray area of ​​the nozzle by converting the entity reference command, and create the effective spray area by stretching command, without merging the entity with the adjacent lamination, to form a ring model of an iron core with flow channels.

[0010] S6: The model with half of it cut off along the nozzle reference plane;

[0011] S7: Based on the nozzle reference plane, create a sketch, create the injection tilt angle in the sketch by converting entity references, and draw the outer envelope of the end winding;

[0012] S8: Suppress the model created in steps S4-S7, and then save the model;

[0013] S9: Assemble with the models with flow channels and teeth to create a complete iron core assembly model.

[0014] The entire modeling process is quick and simple, and model adjustments are fast. Only the parameters in step S2 need to be adjusted, and the other parameters will change accordingly. For example, the circumferential spray angle can be rotated clockwise or counterclockwise. In particular, for iron cores of different sizes, only the annular parameters in step one need to be adjusted.

[0015] Alternatively, the effective spray area can be adjusted by changing the width and height of the nozzle.

[0016] The spray angle can also be adjusted by adjusting the height of the nozzle.

[0017] The circumferential injection angle can also be adjusted by rotating the shaft of the lamination motor.

[0018] Furthermore, in step S2, the stretching dimension is equal to the thickness of the stacked iron core.

[0019] Furthermore, the number of circular arrays in step S3 is set according to the actual situation.

[0020] Furthermore, after step S5 and before step S6, the following steps are included: check whether the effective spray area meets the requirements. If it does, continue to the next step. If it does not meet the requirements, return to step S2 to edit the model parameters until the requirements are met and then continue to the next step.

[0021] Furthermore, after step S7 and before step S8, the process also includes the following steps: check whether the coolant drop point position meets the requirements. If it meets the requirements, continue to the next step. If it does not meet the requirements, return to step two to edit the model parameters until the requirements are met and then continue to the next step. Attached Figure Description

[0022] Figure 1 This is a rapid modeling method for the flow channel of the motor core as described in an embodiment of the present invention. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] Combination Figure 1 This paper demonstrates a rapid modeling method for the flow channel of an electric motor core, including the following steps:

[0025] S1: Create multiple laminations sequentially in 3D modeling software and stack them axially. The outer diameter of the iron core is the outer diameter of the laminations. The inner diameter is greater than the maximum outer envelope diameter of the winding slot bottom and less than the minimum outer envelope diameter of the iron core nozzle. The thickness is equal to the thickness of the stacked iron core, forming a ring-shaped model of the iron core with teeth.

[0026] S2: Create a nozzle on the annular model of the iron core using the extrude cut command, with the extruded dimension equal to the thickness of the stacked iron core;

[0027] S3: Create all nozzles along the circumference of the iron core using a circular array;

[0028] S4: Select one of the nozzles and create a nozzle reference plane using the diagonal faces of the outermost and innermost nozzles;

[0029] S5: Create the edge of the effective spray area of ​​the nozzle by converting the entity reference command, and create the effective spray area by stretching command, without merging the entity with the adjacent lamination, to form a ring model of an iron core with flow channels.

[0030] S6: The model with half of it cut off along the nozzle reference plane;

[0031] S7: Based on the nozzle reference plane, create a sketch, create the injection tilt angle in the sketch by converting entity references, and draw the outer envelope of the end winding;

[0032] S8: Suppress the model created in steps S4-S7, and then save the model;

[0033] S9: Assemble with the models with flow channels and teeth to create a complete iron core assembly model.

[0034] The entire modeling process is quick and simple, and model adjustments are fast. Only the parameters in step S2 need to be adjusted, and the other parameters will change accordingly. For example, the circumferential spray angle can be rotated clockwise or counterclockwise. In particular, for iron cores of different sizes, only the annular parameters in step one need to be adjusted.

[0035] Alternatively, the effective spray area can be adjusted by changing the width and height of the nozzle.

[0036] The spray angle can also be adjusted by adjusting the height of the nozzle.

[0037] The circumferential injection angle can also be adjusted by rotating the shaft of the lamination motor.

[0038] In step S2, the stretching dimension is equal to the thickness of the stacked iron core.

[0039] The number of circular arrays in step S3 is set according to the actual situation.

[0040] After step S5 and before step S6, the following steps are also included: check whether the effective spray area meets the requirements. If it meets the requirements, continue to the next step. If it does not meet the requirements, return to step S2 to edit the model parameters until the requirements are met and then continue to the next step.

[0041] After step S7 and before step S8, the following steps are also included: check whether the coolant drop point position meets the requirements. If it meets the requirements, continue to the next step. If it does not meet the requirements, return to step two to edit the model parameters until the requirements are met and then continue to the next step.

[0042] This invention is applicable to the stator and rotor cores of radial flux motors, the stator and rotor cores of axial flux motors, and the stator and rotor cores of mixed radial and axial flux motors. Its applicability is not affected by the type of motor.

[0043] This invention is not limited by modeling software and can use 3D modeling software such as SolidWorks. This invention is not limited by the type of core lamination with nozzles, nor by the shape of the nozzle.

[0044] In particular, the material of the nozzle core can be other than silicon steel sheets, such as metal, plastic, or composite materials.

[0045] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A rapid modeling method for the flow channel of an electric motor core, characterized in that, Including the following steps: S1: Create multiple laminations sequentially in 3D modeling software and stack them axially. The outer diameter of the iron core is the outer diameter of the laminations. The inner diameter is greater than the maximum outer envelope diameter of the winding slot bottom and less than the minimum outer envelope diameter of the iron core nozzle. The thickness is equal to the thickness of the stacked iron core, forming a ring-shaped model of the toothed iron core. S2: Create a nozzle on the annular model of the iron core using the extrude cut command, with the extruded dimension equal to the thickness of the stacked iron core; S3: Create all nozzles along the circumference of the iron core using a circular array; S4: Select one of the nozzles and create a nozzle reference plane using the diagonal faces of the outermost and innermost nozzles; S5: Create the edge of the effective spray area of ​​the nozzle by converting the entity reference command, and create the effective spray area by stretching command, without merging the entity with the adjacent lamination, to form a ring model of an iron core with flow channels. S6: The model with half of it cut off along the nozzle reference plane; S7: Based on the nozzle reference plane, create a sketch, create the injection tilt angle in the sketch by converting entity references, and draw the outer envelope of the end winding; S8: Suppress the model created in steps S4-S7, and then save the model; S9: Assemble with the models with flow channels and teeth to create a complete iron core assembly model.

2. The rapid modeling method for the flow channel of the motor core according to claim 1, characterized in that, In step S2, the stretching dimension is equal to the thickness of the stacked iron core.

3. The rapid modeling method for the flow channel of the motor core according to claim 1, characterized in that, The number of circular arrays in step S3 is set according to the actual situation.

4. The rapid modeling method for the flow channel of the motor core according to claim 1, characterized in that, After step S5 and before step S6, the following steps are also included: check whether the effective spray area meets the requirements. If it meets the requirements, continue to the next step. If it does not meet the requirements, return to step S2 to edit the model parameters until the requirements are met and then continue to the next step.

5. The rapid modeling method for the flow channel of the motor core according to claim 1, characterized in that, After step S7 and before step S8, the following steps are also included: check whether the coolant drop point position meets the requirements. If it meets the requirements, continue to the next step. If it does not meet the requirements, return to step two to edit the model parameters until the requirements are met and then continue to the next step.

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