Stator core, optimization design method, brushless motor and electric protector equipment

Abstract

The invention discloses a stator core and an optimization design method thereof, a brushless motor and a protector device. The method comprises the following steps: generating a motor shell model according to shell size parameters and shell shape parameters in shell model data; extracting a first characteristic parameter in the shell size parameters and a second characteristic parameter in the shell shape parameters; traversing and querying a plurality of historical models in a historical model database to generate stator core models in a plurality of structural forms; respectively carrying out an electrical simulation test on each motor model, and outputting motor simulation data; sorting the performance parameters of the same kind to obtain multiple groups of parameter sorting data; target parameters are obtained according to the multiple sets of parameter sorting data, the stator core model is adjusted, and a target stator core model is obtained. According to the invention, the structure of the stator core is optimally designed, so that the stator core can be matched with the motor shell under the condition that the magnetic density is ensured, and the stator core can be used for a compact brushless motor.

Description

Technical Field

[0001] The present invention relates to the technical field of brushless motors, and in particular to a stator core and an optimization design method, a brushless motor, and a personal protection electrical appliance. Background Art

[0002] A brushless motor includes a housing, a stator, a rotor, a motor shaft and other components. The main factors affecting the motor performance are the stator structure, the rotor structure and the motor control method. The stator includes a plurality of layers of stator steel sheets stacked on each other. The stator steel sheets include a stator yoke and a pole piece. The coil winding is wound on the pole piece, so that an electromagnetic reaction occurs between the coil and the rotor when power is applied to make the rotor rotate.

[0003] Since brushless motors are used in electrical equipment, such as electric hair clippers in personal care electrical equipment, and the internal structure of electric hair clippers is relatively compact, in order to meet the structural design requirements of electric hair clippers and the use requirements of motors, brushless motors can only be made more compact. After the structure of the brushless motor is compactly designed, the structure of the stator steel sheet needs to follow the compact design, thereby reducing the magnetic density, etc., which reduces the performance of the brushless motor. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a stator core optimization design method, a brushless motor and a personal protective electrical appliance, aiming to optimize the structure of the stator core so that the stator core can be adapted to the motor housing while ensuring the magnetic density, so that the stator core can be used in a compact brushless motor.

[0005] A first aspect of the present invention is to provide a method for optimizing the design of a stator core, the method comprising:

[0006] Acquire housing model data of the motor housing, and generate a motor housing model according to housing size parameters and housing shape parameters in the housing model data;

[0007] Acquire and identify the shell size parameter and the shell shape parameter, extract a first characteristic parameter from the shell size parameter, and a second characteristic parameter from the shell shape parameter;

[0008] According to the first characteristic parameter and the second characteristic parameter, a plurality of historical models are traversed and queried in a preset historical model database to generate stator core models of various structural forms;

[0009] Coil windings are generated on stator core models of various structural forms respectively, so as to obtain various motor models corresponding to the various stator core models respectively;

[0010] Performing electrical simulation tests on each motor model respectively, and outputting motor simulation data of the motor model;

[0011] According to the motor simulation data corresponding to all the motor models, the same performance parameters in all the motor simulation data are sorted to obtain multiple groups of parameter sorting data;

[0012] According to the plurality of groups of parameter sorting data, the other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter are adjusted to obtain target parameters, and the structural form of the stator core model is adjusted according to the target parameters to obtain a target stator core model.

[0013] According to one aspect of the above technical solution, the steps of acquiring and identifying the shell size parameter and the shell shape parameter, and extracting the first characteristic parameter from the shell size parameter and the second characteristic parameter from the shell shape parameter include:

[0014] Acquire the shell size parameters and the shell shape parameters;

[0015] Identify the space size parameters of the motor housing model in the housing size parameters to obtain the first characteristic parameters in the housing size parameters; the space size parameters include the parameters of the length, width and height of the inner space of the motor housing model;

[0016] Identify the contour feature parameters of the motor housing model in the housing shape parameters to obtain second feature parameters in the housing shape parameters; the contour feature parameters include contour parameters of the inner space of the motor housing model, including rectangular, circular and runway shapes.

[0017] According to one aspect of the above technical solution, according to the first characteristic parameter and the second characteristic parameter, the step of traversing and querying multiple historical models in a preset historical model database to generate stator core models of multiple structural forms includes:

[0018] According to the profile feature parameters in the second feature parameters, traverse and query historical models in a preset historical model database, and generate multiple stator core models corresponding to the profile feature parameters in combination with the stator core design schemes in the historical models;

[0019] According to the space size parameters in the first characteristic parameters, the size parameters of the pre-generated stator core model are adjusted to obtain stator core models of various structural forms.

[0020] According to one aspect of the above technical solution, according to the profile feature parameters in the second feature parameters, the steps of traversing and querying historical models in a preset historical model database, and generating multiple stator core models corresponding to the profile feature parameters in combination with the stator core design schemes in the historical models include:

[0021] According to the profile characteristic parameter in the second characteristic parameter, traverse and query multiple historical models of the stator core having the same profile characteristic parameter in a pre-established historical model database;

[0022] A plurality of stator core models corresponding to the profile feature parameters are generated in combination with the stator core design solutions in the historical model.

[0023] According to one aspect of the above technical solution, according to the plurality of groups of parameter sorting data, adjusting other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter to obtain target parameters, and adjusting the structural form of the stator core model according to the target parameters to obtain the target stator core model, the step includes:

[0024] Obtain multiple sets of parameter ranking data to obtain key parameters corresponding to the optimal performance parameter indicators;

[0025] According to the key parameters corresponding to each optimal performance parameter, other parameters in the stator core model except the first characteristic parameter and the second characteristic key parameter are replaced to obtain target parameters;

[0026] The structure of the stator core model is set according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model.

[0027] According to one aspect of the above technical solution, the structure of the stator core model is set according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model, including:

[0028] According to the profile feature parameters in the second feature parameters, the profile feature of the stator core model is set;

[0029] According to the space dimension parameters in the first characteristic parameters, the dimension parameters of the stator core model are set;

[0030] And according to the key parameters, the slot type, slot spacing and slot number of the stator core model are set to obtain the stator core model.

[0031] According to one aspect of the above technical solution, the stator core model obtained by the optimized design includes a plurality of stacked stator steel sheet models, each of the stator steel sheets includes a stator yoke portion and a plurality of pole piece portions arranged in the stator yoke portion, and the stator yoke portion includes four edges of equal length and an interlocking edge transitionally connected between any two adjacent edges.

[0032] The second aspect of the present invention is to provide a stator core, which is designed and manufactured by the method described in the above technical scheme, and the stator core includes a plurality of stacked stator steel sheets, each of which includes a stator yoke and a plurality of pole pieces arranged in the stator yoke, and the stator yoke includes four edges of equal length and an interlocking edge that transitions between any two adjacent edges.

[0033] A third aspect of the present invention is to provide a brushless motor, the brushless motor comprising the stator core described in the above technical solution;

[0034] The brushless motor also includes a coil winding wound on the stator core. The stator core carrying the coil winding is embedded in the motor housing through the interlocking edge, and a rotor assembly and a rotating shaft are provided between the stator cores. One end of the rotating shaft passes through the motor housing and is fixed with an eccentric vibrator.

[0035] The fourth aspect of the present invention is to provide a personal protective electrical device, including the brushless motor described in the above technical solution, the personal protective electrical device includes a device housing and a shearing component, the brushless motor is arranged in the device housing, and the eccentric vibrator of the brushless motor is transmission-connected to the shearing component.

[0036] Compared with the prior art, the stator core and the optimization design method, the brushless motor, and the personal protection electrical appliance shown in the present invention have the following beneficial effects:

[0037] By acquiring the shell model data of the motor shell, generating the motor shell model based on the shell size parameters and the shell shape parameters in the shell model data, then extracting the first characteristic parameter in the shell size parameter and the second characteristic parameter in the shell shape parameter, and then traversing and querying multiple historical models in a preset historical model database according to the first characteristic parameter and the second characteristic parameter to generate stator core models of various structural forms, and then generating coil windings on the stator cores of various structural forms, so that multiple motor models can be obtained, the motor model also includes a rotor, a rotating shaft, etc., and then performing electrical simulation tests on each motor model, outputting motor simulation data, and then the motor simulation data According to the ranking of the performance parameters in the multiple groups of parameter sorting data, the other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter are adjusted to obtain the target parameters, and then the structural form of the stator core model is adjusted based on the target parameters to obtain the target stator core model. The stator core corresponding to the motor housing can be manufactured based on the target stator core model. The method shown in the present invention optimizes the structure of the stator core, so that the stator core can be adapted to the motor housing while ensuring the magnetic density, so that the stator core can be used in a compact brushless motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0039] Figure 1 Schematic diagram of a flow chart of a method for optimizing the design of a stator core in one embodiment of the present invention;

[0040] Figure 2 It is a schematic structural diagram of a brushless motor in one embodiment of the present invention at a first viewing angle;

[0041] Figure 3 It is a structural schematic diagram of a brushless motor in one embodiment of the present invention at a second viewing angle;

[0042] Figure 4 for Figure 3 Schematic cross-sectional view along the AA direction;

[0043] Figure 5 It is a schematic structural diagram of a stator core in a brushless motor in one embodiment of the present invention;

[0044] Component symbol description:

[0045] The motor housing 10 , the stator core 20 , the stator yoke 21 , the edge 21 a , the fitting edge 21 b , the pole piece 22 , the rotor assembly 30 , the rotating shaft 40 , and the eccentric vibrator 50 . DETAILED DESCRIPTION

[0046] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0048] Embodiment 1

[0049] See also Figure 1 The first embodiment of the present invention provides a method for optimizing the design of a stator core, the method comprising steps S10 to S70:

[0050] Step S10: acquiring housing model data of the motor housing, and generating a motor housing model according to housing size parameters and housing shape parameters in the housing model data.

[0051] In this embodiment, in order to optimize the design of the stator core, during the engineering drawing process of the brushless motor, the shell model data of the motor shell will be obtained first, and the motor shell model will be generated according to the shell size data and shell shape data in the shell model data. The shell model data is determined based on the structural design of the personal care electrical equipment. For example, the maximum allowable installation space of the brushless motor is determined based on the internal structure of the electric hair clipper, such as the length, width and height of the maximum allowable space, so as to output the shell size data to generate the motor shell model.

[0052] It should be noted that after the motor housing model is generated according to the housing model data, it does not need to be adjusted again. Only the structure of the stator and rotor in the motor housing model needs to be adjusted to ensure that the stator, rotor and other components can be assembled in the motor housing model.

[0053] Step S20, acquiring and identifying the shell size parameters and the shell shape parameters, extracting the first characteristic parameters from the shell size parameters, and the second characteristic parameters from the shell shape parameters.

[0054] The steps of acquiring and identifying the shell size parameter and the shell shape parameter, and extracting the first characteristic parameter from the shell size parameter and the second characteristic parameter from the shell shape parameter include:

[0055] Acquire the shell size parameters and the shell shape parameters;

[0056] Identify the space size parameters of the motor housing model in the housing size parameters to obtain the first characteristic parameters in the housing size parameters; the space size parameters include the parameters of the length, width and height of the inner space of the motor housing model;

[0057] Identify the contour feature parameters of the motor housing model in the housing shape parameters to obtain second feature parameters in the housing shape parameters; the contour feature parameters include contour parameters of the inner space of the motor housing model, including rectangular, circular and runway shapes.

[0058] The step of traversing and querying a plurality of historical models in a preset historical model database to generate stator core models of a plurality of structural forms according to the first characteristic parameter and the second characteristic parameter includes:

[0059] According to the profile feature parameters in the second feature parameters, traverse and query historical models in a preset historical model database, and generate multiple stator core models corresponding to the profile feature parameters in combination with the stator core design schemes in the historical models;

[0060] According to the space size parameters in the first characteristic parameters, the size parameters of the pre-generated stator core model are adjusted to obtain stator core models of various structural forms.

[0061] In this embodiment, according to the shell model data, the shell size parameters and shell shape parameters recorded in the shell model data are obtained, the shell size parameters include the length, width and height data of the motor shell model and the wall thickness data of the motor shell model, and the shell shape parameters are used to express the shape of the motor shell model, such as a cuboid, a cylinder, etc. Then, according to the length parameter, width parameter, height parameter and wall thickness parameter in the shell size parameters of the motor shell model, the space size of the motor shell is calculated, so as to obtain the space size parameter, that is, to obtain the first characteristic parameter in the shell size parameter. And according to the shell shape parameters in the shell model data, the contour feature parameters of the motor shell model are clarified, such as a rectangle, a circle and a runway shape, so as to obtain the second characteristic parameter in the shell shape parameter. Then, according to the contour feature parameters in the second characteristic parameters, the historical model is traversed and queried in the preset historical model database, and a variety of stator core models corresponding to the contour feature parameters are generated in combination with the stator core design scheme in the historical model for selection. Finally, according to the space size parameters in the first characteristic parameters, the size parameters of the pre-generated stator core model are adjusted, such as adjusting its length and width, to obtain stator core models of various structural forms.

[0062] Step S30: According to the first characteristic parameter and the second characteristic parameter, a plurality of historical models are traversed and queried in a preset historical model database to generate stator core models of various structural forms.

[0063] Among them, according to the profile feature parameters in the second feature parameters, traversing and querying historical models in a preset historical model database, and combining the stator core design schemes in the historical models to generate multiple stator core models corresponding to the profile feature parameters include:

[0064] According to the profile characteristic parameter in the second characteristic parameter, traverse and query multiple historical models of the stator core having the same profile characteristic parameter in a pre-established historical model database;

[0065] A plurality of stator core models corresponding to the profile feature parameters are generated in combination with the stator core design solutions in the historical model.

[0066] In this embodiment, when generating stator core models of various structural forms, first, according to the contour feature parameters in the second characteristic parameters, a plurality of historical models of the stator cores in numerous brushless motors with the same contour feature parameters will be traversed and queried in a pre-established historical model database, that is, a stator core with equal length, width and height will be found, and its historical model will be obtained, which is a brushless motor model. Then, in combination with the stator core design scheme in the historical model, a plurality of stator core models corresponding to the contour feature parameters will be generated. For example, if the number of pole pieces and the slot spacing in the plurality of stator core models are different, the performance of the corresponding stator cores used in the brushless motor will also be different. Therefore, in this embodiment, a plurality of stator core models are generated for selection.

[0067] Step S40, generating coil windings on stator core models of various structural forms respectively, to obtain various motor models corresponding to the various stator core models respectively.

[0068] In this embodiment, after generating stator core models of various structural forms, coil windings are generated in each stator core model according to the number of pole pieces and slot spacing, thereby obtaining multiple motor models corresponding to the various stator core models.

[0069] It should be noted here that after the coil winding is generated on the stator core model, it is also necessary to set the circuit board model, the rotor model and the motor shaft model to obtain a complete motor model.

[0070] Step S50 , performing electrical simulation tests on each motor model, and outputting motor simulation data of the motor model.

[0071] In this embodiment, after setting the stator core and coil windings, a complete motor model is obtained by setting the models of other components in the motor model, and an electrical simulation test is performed on each motor model, such as measuring the theoretical magnetic flux data, speed data, heat distribution data, etc. of the motor model, thereby outputting the motor simulation data of the motor model.

[0072] Step S60 , sorting the same type of performance parameters in all motor simulation data according to the motor simulation data corresponding to all motor models, to obtain multiple groups of parameter sorting data.

[0073] In this embodiment, by performing electrical simulation on each motor model and outputting corresponding motor simulation data, the performance parameters of the same category in the motor simulation data are sorted. For example, the magnetic flux, rotational speed, and heat distribution are sorted from high to low, and multiple groups of parameter sorting data can be obtained.

[0074] Among them, multiple groups of parameter sorting data include magnetic flux sorting data, speed sorting data and heat distribution sorting data, etc., so as to clarify the advantages and disadvantages of the stator core model in each motor model. Finally, in this embodiment, the advantages and disadvantages of each stator core model will be integrated to obtain the target stator core model required in this embodiment.

[0075] Step S70, adjusting the other parameters of the stator core model except the first characteristic parameter and the second characteristic parameter according to the multiple groups of parameter sorting data to obtain target parameters, and adjusting the structural form of the stator core model according to the target parameters to obtain a target stator core model.

[0076] Among them, according to the plurality of groups of parameter sorting data, adjusting other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter to obtain target parameters, and adjusting the structural form of the stator core model according to the target parameters to obtain the target stator core model, the step includes:

[0077] Obtain multiple sets of parameter ranking data to obtain key parameters corresponding to the optimal performance parameter indicators;

[0078] According to the key parameters corresponding to each optimal performance parameter, other parameters in the stator core model except the first characteristic parameter and the second characteristic key parameter are replaced to obtain target parameters;

[0079] The structure of the stator core model is set according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model.

[0080] In this embodiment, when adjusting the structural form of the stator core model, specifically, adjusting the parameters other than the first characteristic parameter and the second characteristic parameter, that is, adjusting the parameters other than the spatial size parameters and the contour characteristic parameters of the stator core model, the target parameters of the stator core model are obtained, such as adjusting the number of pole pieces, the pole piece contour and the slot type, slot spacing and number of slots between adjacent pole pieces in the stator core model to obtain the target parameters, and then resetting the stator core model according to the target parameters and the first characteristic parameter and the second characteristic parameter to obtain the target stator core model.

[0081] The step of setting the structure of the stator core model according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model includes:

[0082] According to the profile feature parameters in the second feature parameters, the profile feature of the stator core model is set;

[0083] According to the space dimension parameters in the first characteristic parameters, the dimension parameters of the stator core model are set;

[0084] And according to the key parameters, the slot type, slot spacing and slot number of the stator core model are set to obtain the stator core model.

[0085] Among them, the stator core model obtained by the optimized design includes a plurality of stacked stator steel sheet models, each of the stator steel sheets includes a stator yoke portion and a plurality of pole piece portions arranged in the stator yoke portion, and the stator yoke portion includes four edges of equal length and an interlocking edge transitionally connected between any two adjacent edges.

[0086] Compared with the prior art, the stator core optimization design method shown in this embodiment has the following beneficial effects:

[0087] By acquiring the shell model data of the motor shell, generating the motor shell model based on the shell size parameters and the shell shape parameters in the shell model data, then extracting the first characteristic parameter in the shell size parameter and the second characteristic parameter in the shell shape parameter, and then traversing and querying multiple historical models in a preset historical model database according to the first characteristic parameter and the second characteristic parameter to generate stator core models of various structural forms, and then generating coil windings on the stator cores of various structural forms, so that multiple motor models can be obtained, the motor model also includes a rotor, a rotating shaft, etc., and then performing electrical simulation tests on each motor model, outputting motor simulation data, and then the motor simulation data According to the ranking of the performance parameters in the multiple groups of parameter sorting data, the other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter are adjusted to obtain the target parameters, and then the structural form of the stator core model is adjusted based on the target parameters to obtain the target stator core model. The stator core corresponding to the motor housing can be manufactured based on the target stator core model. The method shown in this embodiment optimizes the structure of the stator core so that the stator core can be adapted to the motor housing while ensuring the magnetic density, so that the stator core can be used in a compact brushless motor.

[0088] Embodiment 2

[0089] See also Figure 5The second aspect of the present invention is to provide a stator core, which is designed and manufactured by the method described in the above embodiment, wherein the stator core 20 includes a plurality of stacked stator steel sheets, each of which includes a stator yoke 21 and a plurality of pole pieces 22 arranged in the stator yoke, and the stator yoke 21 includes four edges 21a of equal length and an interlocking edge 21b transitionally connected between any two adjacent edges 21a.

[0090] Embodiment 3

[0091] See also Figure 2-Figure 5 The third aspect of the present invention is to provide a brushless motor, the brushless motor comprising the stator core 20 described in the above embodiment;

[0092] The brushless motor also includes a coil winding wound on the stator core 20. The stator core 20 carrying the coil winding is embedded in the motor housing 10 through the interlocking edge 21b, and a rotor assembly 30 and a rotating shaft 40 are provided between the stator core 20. One end of the rotating shaft 40 passes through the motor housing 10 and is fixed with an eccentric vibrator 50.

[0093] Embodiment 4

[0094] The fourth embodiment of the present invention provides a personal protective electrical device, including the brushless motor described in the above embodiment, the personal protective electrical device includes a device housing and a shearing component, the brushless motor is arranged in the device housing, and the eccentric vibrator of the brushless motor is transmission-connected to the shearing component.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0096] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for optimizing the design of a stator core, characterized in that: The method comprises: Acquire housing model data of the motor housing, and generate a motor housing model according to housing size parameters and housing shape parameters in the housing model data; Acquire and identify the shell size parameter and the shell shape parameter, extract a first characteristic parameter from the shell size parameter, and a second characteristic parameter from the shell shape parameter; According to the first characteristic parameter and the second characteristic parameter, a plurality of historical models are traversed and queried in a preset historical model database to generate stator core models of various structural forms; Coil windings are generated on stator core models of various structural forms respectively, so as to obtain various motor models corresponding to the various stator core models respectively; Performing electrical simulation tests on each motor model respectively, and outputting motor simulation data of the motor model; According to the motor simulation data corresponding to all the motor models, the same performance parameters in all the motor simulation data are sorted to obtain multiple groups of parameter sorting data; According to the plurality of groups of parameter sorting data, the other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter are adjusted to obtain target parameters, and the structural form of the stator core model is adjusted according to the target parameters to obtain a target stator core model.

2. The stator core optimization design method according to claim 1, characterized in that: The steps of acquiring and identifying the shell size parameter and the shell shape parameter, and extracting a first characteristic parameter from the shell size parameter and a second characteristic parameter from the shell shape parameter include: Acquire the shell size parameters and the shell shape parameters; Identify the space size parameters of the motor housing model in the housing size parameters to obtain the first characteristic parameters in the housing size parameters; the space size parameters include the parameters of the length, width and height of the inner space of the motor housing model; Identify the contour feature parameters of the motor housing model in the housing shape parameters to obtain second feature parameters in the housing shape parameters; the contour feature parameters include contour parameters of the inner space of the motor housing model, including rectangular, circular and runway shapes.

3. The stator core optimization design method according to claim 2, characterized in that: The step of traversing and querying a plurality of historical models in a preset historical model database according to the first characteristic parameter and the second characteristic parameter to generate stator core models of a plurality of structural forms comprises: According to the profile feature parameters in the second feature parameters, traverse and query historical models in a preset historical model database, and generate multiple stator core models corresponding to the profile feature parameters in combination with the stator core design schemes in the historical models; According to the space size parameters in the first characteristic parameters, the size parameters of the pre-generated stator core model are adjusted to obtain stator core models of various structural forms.

4. The stator core optimization design method according to claim 3, characterized in that: The step of traversing and querying historical models in a preset historical model database according to the profile feature parameters in the second feature parameters, and generating a plurality of stator core models corresponding to the profile feature parameters in combination with the stator core design schemes in the historical models comprises: According to the profile characteristic parameter in the second characteristic parameter, traverse and query multiple historical models of the stator core having the same profile characteristic parameter in a pre-established historical model database; A plurality of stator core models corresponding to the profile feature parameters are generated in combination with the stator core design solutions in the historical model.

5. The stator core optimization design method according to claim 1, characterized in that: According to the plurality of groups of parameter sorting data, adjusting other parameters in the stator core model except the first characteristic parameter and the second characteristic parameter to obtain target parameters, and adjusting the structural form of the stator core model according to the target parameters to obtain the target stator core model, comprising: Obtain multiple sets of parameter ranking data to obtain key parameters corresponding to the optimal performance parameter indicators; According to the key parameters corresponding to each optimal performance parameter, other parameters in the stator core model except the first characteristic parameter and the second characteristic key parameter are replaced to obtain target parameters; The structure of the stator core model is set according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model.

6. The stator core optimization design method according to claim 5, characterized in that: The step of setting the structure of the stator core model according to the first characteristic parameter, the second characteristic parameter and the key parameter to obtain a target stator core model includes: According to the profile feature parameters in the second feature parameters, the profile feature of the stator core model is set; According to the space dimension parameters in the first characteristic parameters, the dimension parameters of the stator core model are set; And according to the key parameters, the slot type, slot spacing and slot number of the stator core model are set to obtain the stator core model.

7. The method for optimizing the design of a stator core according to any one of claims 1 to 6, characterized in that: The stator core model obtained by the optimized design includes a plurality of stacked stator steel sheet models, each of the stator steel sheets includes a stator yoke portion and a plurality of pole pieces arranged in the stator yoke portion, and the stator yoke portion includes four edges of equal length and an interlocking edge transitionally connected between any two adjacent edges.

8. A stator core, characterized in that: Designed and manufactured by the method described in any one of claims 1 to 7, the stator core includes a plurality of stacked stator steel sheets, each of the stator steel sheets includes a stator yoke portion and a plurality of pole pieces arranged in the stator yoke portion, and the stator yoke portion includes four edges of equal length and an interlocking edge transitionally connected between any two adjacent edges.

9. A brushless motor, characterized in that: The brushless motor comprises the stator core according to claim 8; The brushless motor also includes a coil winding wound on the stator core. The stator core carrying the coil winding is embedded in the motor housing through the interlocking edge, and a rotor assembly and a rotating shaft are provided between the stator cores. One end of the rotating shaft passes through the motor housing and is fixed with an eccentric vibrator.

10. A personal protective electrical device, characterized in that: Including the brushless motor as described in claim 9, the personal protection electrical appliance device includes a device housing and a shearing component, the brushless motor is arranged in the device housing, and the eccentric vibrator of the brushless motor is transmission-connected to the shearing component.

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