WO2024104042A1

WO2024104042A1 - Stator core assembly, stator, and motor

Info

Publication number: WO2024104042A1
Application number: PCT/CN2023/125228
Authority: WO
Inventors: 林建生; 许金鑫; 邵珠鑫; 郑礼成; 吴迪
Original assignee: 广东威灵电机制造有限公司; 威灵（芜湖）电机制造有限公司
Priority date: 2022-11-14
Filing date: 2023-10-18
Publication date: 2024-05-23
Also published as: CN115765231A

Abstract

A stator core assembly, a stator, and a motor. The stator core assembly comprises a core component (100) and an insulating frame chain (200). The core component (100) comprises a plurality of cores (110), and the insulating frame chain (100) comprises a plurality of insulating frames (210) connected in sequence. Each core (110) comprises a yoke part (120), a tooth part (130) and a pole piece part (140) which are connected. The pole piece part (140) is arranged at the end of the tooth part (130) facing away from the yoke part (120). The insulating frame (210) is provided with a penetrating cavity (211), and the tooth part (130) is arranged in the penetrating cavity (211).

Description

Stator core assembly, stator and motor

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 202211421241.4 filed on November 14, 2022 and entitled “Stator Core Assembly, Stator and Motor”, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the technical field of motors, and in particular to a stator core assembly, a stator and a motor.

Background technique

In the related art, during the manufacturing process of the motor, the bar core needs to be bent into a circle to obtain a ring-shaped core for the next manufacturing process. The structure of the traditional bar core, when punching the core, is manufactured into a structure in which the pole shoes of multiple cores are connected to each other, and the external insulating frame is independent of each other and can be loaded and unloaded separately. In this structure, the pole shoes of multiple cores are directly connected, resulting in low efficiency of electromagnetic energy conversion, affecting the performance of the outer rotor motor.

Summary of the invention

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a stator core assembly, a stator using the stator core assembly, and a motor using the stator.

According to the stator core assembly of the first aspect embodiment of the present application, the stator core assembly includes a core component and an insulating frame chain, wherein the core component includes a plurality of cores, and the insulating frame chain includes a plurality of insulating frames connected in sequence; wherein the core includes a connected yoke portion, a tooth portion and a boot portion, the boot portion is arranged at an end of the tooth portion away from the yoke portion, the insulating frame is provided with a penetration cavity, and the tooth portion is installed in the penetration cavity.

According to some embodiments of the present application, the iron core corresponds one-to-one to the insulating frame.

According to some embodiments of the present application, the insulating frame is provided with a boot baffle, the boot baffle abuts against the side of the boot facing the yoke, and a clearance groove is formed between the boot baffles of two adjacent insulating frames.

According to some embodiments of the present application, the give way slot is fan-shaped and has an included angle of α, the number of the iron cores is x, and the product of α and x is greater than or equal to 360°.

According to some embodiments of the present application, a bending groove is provided on the side of the boot baffle facing away from the boot, and the bending groove is arranged along the axial direction of the core component. Along the circumference of the core component, one bending groove is distributed on each side of the give way groove.

According to some embodiments of the present application, the outer side surface of the boot is an arc surface and the curvature radius of the arc surface is r, the wall surface of the bending groove is a cylindrical surface and the radius of the cylindrical surface is 0.002r to 0.007r.

According to some embodiments of the present application, the insulating frame is provided with a yoke baffle, the yoke baffle is abutted against the yoke, and the edge of the yoke baffle is provided with a hook corner, and the hook corner extends toward the boot.

According to some embodiments of the present application, the outer side surface of the boot is an arc surface and the radius of curvature of the arc surface is r, along the circumference of the arc surface, the width of the inner side surface of the boot is c, the length of the insulating frame chain is L, and the number of the iron cores is x, satisfying: xc＜L＜2xr*sin(180°/x).

According to some embodiments of the present application, the insulating frame chain includes a first frame chain and a second frame chain, the first frame chain and the second frame chain are assembled into the insulating frame chain, and are arranged on both axial sides of the core component.

According to some embodiments of the present application, the insulating frame chain is an integral structure, and the insulating frame chain and the core component are integrally formed through a plastic coating process.

According to some embodiments of the present application, the multiple cores of the core component are independent of each other, and the multiple cores are connected by the insulating frame chain.

According to some embodiments of the present application, a plurality of the iron cores are arranged in sequence, and two adjacent iron cores are connected by a magnetic isolation bridge.

According to some embodiments of the present application, the iron core is a multi-layer silicon steel sheet stacked structure, the magnetic isolation bridge connects one layer of the silicon steel sheet of two adjacent core components, and along the circumference of the core component, the two adjacent groups of magnetic isolation bridges are at different levels.

According to some embodiments of the present application, the magnetic isolation bridge is located between the boots of two adjacent cores, and a curved groove is provided on the side of the magnetic isolation bridge facing the yoke.

The stator according to the second aspect of the present application includes the stator core assembly as described in the first aspect of the present application.

The motor according to the third aspect of the present application includes the stator as described in the second aspect of the present application.

Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

Additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG1 is a front view of a stator core assembly in an extended state according to some embodiments of the present application;

FIG2 is a partial enlarged view of point A in FIG1;

FIG3 is a partial enlarged view of point B in FIG1;

FIG4 is an exploded schematic diagram of a stator core assembly according to some embodiments of the present application;

FIG5 is a partial enlarged view of point C in FIG4;

FIG6 is a schematic diagram of a partial structure of a stator core assembly according to some embodiments of the present application;

FIG7 is a cross-sectional view of a core component in some embodiments of the present application;

FIG8 is a partial front view of a core component in some other embodiments of the present application;

FIG9 is a partial top view of the core component in FIG8 ;

FIG10 is a schematic diagram of the arrangement of magnetic isolation bridges in some embodiments of the present application;

FIG11 is a second schematic diagram of the arrangement of magnetic isolation bridges in some embodiments of the present application; and

FIG. 12 is a third schematic diagram of the arrangement of magnetic isolation bridges in some embodiments of the present application.

The figures are as follows:
The core component 100, the core 110, the yoke 120, the clamping bar 121, the clamping groove 122, the tooth portion 130, and the shoe portion 140;
Insulating frame chain 200, insulating frame 210, penetration cavity 211, boot baffle 212, yoke baffle 213, clearance groove
214, bending groove 215, hook angle 216, first frame chain 220, second frame chain 230, boss 231;
Magnetic isolation bridge 300 and curved groove 301 .

Detailed ways

The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In the description of this application, if there is a description of first or second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

In the related art, the stator of the outer rotor motor consists of an iron core and a winding, and the winding is installed on the iron core through an insulating frame. The iron core is usually formed by bending a sheet of iron core punching into a circle to obtain a ring-shaped iron core. When processing the iron core punching, the iron core punching is manufactured into a structure in which multiple pole shoes of the iron core are connected to each other, and the external insulating frame is independent of each other and can be loaded and unloaded separately. Since the pole shoes of multiple iron cores are directly connected, the efficiency of electromagnetic energy conversion is low and the leakage magnetic flux is large. Large, affecting the performance of the external rotor motor.

To this end, an embodiment of the first aspect of the present application proposes a stator core assembly applied to a motor, which can effectively reduce magnetic leakage, improve the efficiency of electromagnetic energy conversion, and help improve the performance of the motor.

1 to 6, the stator core assembly proposed in the embodiment of the present application includes a core component 100 and an insulating frame chain 200. The core component 100 includes a plurality of cores 110. The cores 110 are usually made of soft magnetic materials, usually silicon steel. Soft magnetic materials are materials that are magnetized when Hc is not greater than 1000A/m, and are also called soft magnets. Soft magnetic materials can achieve maximum magnetization intensity with a minimum external magnetic field, and have low coercive force and high magnetic permeability. Soft magnetic materials are easy to magnetize and demagnetize, and are widely used in electrical and electronic equipment.

It can be understood that the core 110 includes a connected yoke 120, a tooth 130 and a boot 140, the yoke 120 and the boot 140 are distributed at both ends of the tooth 130, along the circumferential direction of the core component 100 (for the annular core component 100), the boot 140 is arranged on both sides of the tooth 130, and the boots 140 of two adjacent cores 110 are close to each other but not in contact. The stator winding is sleeved on the outside of the tooth 130, and the boot 140 is used to limit the winding in the radial direction to prevent the winding from shifting or detaching.

8 , along the circumference of the core component 100 , a clamping strip 121 is provided on one side of the yoke 120 , and a clamping groove 122 is provided on the other side. When a plurality of cores 110 are assembled into a ring-shaped core component 100 , the clamping strip 121 of one of the two adjacent cores 110 is inserted into the clamping groove 122 of the other core, and the yokes 120 of the plurality of cores 110 are combined into a ring-shaped body, so that the core component 100 has a stable structure and improved reliability in use.

It can be understood that the multiple cores 110 of the core component 100 can be independent components, and the multiple cores 110 are connected as a whole through the insulating frame chain 200; or the multiple cores 110 are connected through a magnetic isolation bridge, and the multiple cores 110 are connected to the insulating frame chain 200, which will be described in detail later.

1 and 2 , the insulating frame chain 200 includes a plurality of insulating frames 210 connected in sequence. Two adjacent insulating frames 210 are connected to each other to form the insulating frame chain 200 . The two adjacent insulating frames 210 may be directly connected or connected via a connecting portion.

Referring to FIG. 5 and FIG. 6 , it can be understood that the insulating frame 210 is provided with a through cavity 211, the shape of the through cavity 211 is consistent with the shape of the tooth portion 130, and the tooth portion 130 of the core 110 is installed in the through cavity 211, so as to be fixedly connected to the insulating frame 210. Considering that the wire of the winding is wound on the outside of the insulating frame 210, the insulating frame 210 is to separate the core 110 from the wire of the winding, so the insulating frame 210 surrounds the core 110, and has a boot baffle 212 and a yoke baffle 213 at both ends of the through cavity 211, the boot baffle 212 abuts against the side of the boot 140 facing the yoke 120, and the yoke baffle 213 abuts against the side of the yoke 120 facing the boot 140, to prevent the wire of the winding from contacting the core 110 and avoiding short circuit. The boot baffle 212 and the yoke baffle 213 simultaneously limit the position of the tooth portion 130 in the through cavity 211 to prevent displacement.

4 and 5, it can be understood that the insulating frame chain 200 is composed of a first frame chain 220 and a second frame chain 230. The first frame chain 220 and the second frame chain 230 are assembled, and are distributed on both axial sides of the core component 100. The first frame chain 220 and the second frame chain 230 each have a half groove, and the two half grooves form a through cavity 211. The opposite surfaces of the first frame chain 220 and the second frame chain 230 are provided with matching buckles, which are connected by the buckles.

It is understandable that the insulating frame chain 200 can also be a single part, which is molded on the outside of the core component 100 through an integral injection molding process to wrap the multiple cores 110.

The stator core assembly of some embodiments of the present application is composed of a core component 100 and an insulating frame chain 200. The multiple cores 110 of the core component 100 are independent of each other and are connected as a whole through the insulating frame chain 200. The core component 100 does not need to punch out the punching sheets connected to the pole shoes during production. The shoe portions 140 of the multiple cores 110 are separated, which reduces the amount of magnetic leakage, is beneficial to improve the efficiency of electromagnetic energy conversion, and improves the performance of the motor (especially the outer rotor motor); moreover, the tooth portion 130 of the core 110 is installed in the through cavity 211 of the insulating frame 210. After the core component 100 is bent and formed, the insulating frame chain 200 can improve the structural strength of the stator core assembly and improve durability.

It can be understood that the iron core 110 corresponds to the insulating frame 210 one by one, that is, the iron core component 100 fills the installation position of the insulating frame chain 200, and after assembly, there will be no empty slots on the insulating frame chain 200, and the shape and cross-section of the penetration cavity 211 of each insulating frame 210 are the same as those of the tooth portion 130. In terms of design, the penetration cavity 211 can be preset with a certain clearance to facilitate the assembly of the iron core 110.

1 to 5 , it can be understood that two adjacent insulating frames 210 are connected by a boot baffle 212 to form an insulating frame chain 200. Considering that the core component 100 needs to be bent after being assembled with the insulating frame chain 200, a clearance groove 214 is formed between the boot baffles 212 of the two adjacent insulating frames 210. During the bending process, the clearance groove 214 is used to prevent the boot baffles 212 of the two adjacent insulating frames 210 from interfering with each other, thereby avoiding affecting the forming of the stator core assembly and preventing the stator core assembly from being deformed or twisted.

Referring to FIG. 2 , it can be understood that the clearance groove 214 is fan-shaped and has an angle of α, and the number of the cores 110 in the core component 100 is x. In terms of design, it is required that the product of α and x is equal to 360°. When the stator core assembly is bent into a ring shape, the boot baffles 212 of two adjacent insulating frames 210 abut against each other, and the insulating frame chain 200 also forms a complete ring shape. Considering the manufacturing error, in terms of design, it is required that the product of α and x is greater than 360° as a better solution, and a certain gap is reserved, which is beneficial to the bending process of the stator core assembly, improves the assembly efficiency, and is also beneficial to reduce the manufacturing accuracy of the insulating frame chain 200 and reduce the cost.

It can be understood that, as shown in Figure 5, the edges of the boot baffles 212 of two adjacent insulating frames 210 are provided with side plates, and the two side plates form an inverted V-shaped structure to form a clearance groove 214. Moreover, the inverted V-shaped structure improves the connection strength and is not easy to break, which is beneficial to the deformation of the insulating frame chain 200 and improves durability.

1 and 2, it can be understood that, during the bending process of the insulating frame chain 200, the boot baffle 212 also Deformation will occur, so a bending groove 215 is arranged on the side of the boot baffle 212 away from the boot 140. Considering that the deformation of the boot baffle 212 is expanded along the circumferential direction, the bending groove 215 is arranged along the axial direction of the core component 100. In the process of bending the insulating frame chain 200, the expansion of the bending groove 215 is used to reduce the deformation of the boot baffle 212, which is beneficial to protecting the insulating frame chain 200 and reducing the risk of fracture. Considering that when the insulating frame chain 200 is bent, the position of the insulating frame chain 200 with the largest deformation is the position where the give way groove 214 is located, two bending grooves 215 are arranged at the position where each give way groove 214 is located in the circumferential direction of the core component 100, and a bending groove 215 is distributed on both sides of the give way groove 214. The two bending grooves 215 are used to disperse the deformation, which is beneficial to reduce the deformation of the boot baffle 212, prevent fracture, and improve reliability.

7 and 8, it can be understood that the outer side surface of the boot 140 is an arc surface and the radius of curvature of the arc surface is r. As shown in FIG2, the wall surface of the bending groove 215 is a cylindrical surface and the radius of the cylindrical surface is set to 0.002r to 0.007r, among which the radius of the cylindrical surface is 0.005r as a better solution. Under the premise of satisfying deformation, the cross-sectional area of the bending groove 215 is more appropriate and easy to process.

Referring to FIG. 1 and FIG. 3 , it can be understood that a hook 216 is provided at the edge of the yoke baffle 213 , and the hook 216 extends toward the boot 140 , and the hook 216 is used to help limit the winding, prevent the wire of the winding from moving and contacting the iron core 110 , and prevent a short circuit problem. The hook 216 can be arranged one on each side edge of the yoke baffle 213 , or multiple on each side edge of the yoke baffle 213 , and the hook 216 can be manufactured by an integrated injection molding process, which is low in cost.

7 , it can be understood that the outer side surface of the boot 140 is an arc surface and the radius of curvature of the arc surface is r, along the circumference of the arc surface, the width of the inner side surface of the boot 140 is c, the length of the insulating frame chain 200 is L, and the number of cores 110 in the core component 100 is x. The design satisfies: xc＜L＜2xr*s in(180°/x), so that the length of the insulating frame chain 200 is adapted to the bent core component 100, which is sufficient to accommodate the core component 100 and avoid excessive deformation.

4 and 5, the insulating frame chain 200 includes a first frame chain 220 and a second frame chain 230. The first frame chain 220 and the second frame chain 230 are assembled into the insulating frame chain 200 and arranged on both sides of the axial direction of the core component 100. The first frame chain 220 and the second frame chain 230 cooperate to clamp the core component 100. In terms of structure, the insulating frame chain 200 is divided into the first frame chain 220 and the second frame chain 230, which is conducive to processing and manufacturing, reduces the complexity of the injection mold, and for the structure of multiple cores 110 being independent of each other, the split insulating frame chain 200 is conducive to assembling the cores 110 one by one. The first frame chain 220 and the second frame chain 230 can be connected and fixed by mutually matching buckles or plug-in connectors. In addition, the winding of the stator can also limit the first frame chain 220 and the second frame chain 230 to play a fixing role.

6 , the first frame chain 220 and the second frame chain 230 clamp the core component 100 from both sides, and a boss 231 is provided on the outer side of the second frame chain 230 away from the core component 100. The boss 231 is used to cooperate with a winding machine to fix the stator core assembly to facilitate winding operations.

8 and 9, in some embodiments, a plurality of cores 110 are arranged in sequence, and two adjacent cores 110 are connected. The connection is made through a magnetic isolation bridge 300, and the saturation value of the leakage flux of the magnetic isolation bridge 300 is low. The low saturation value of the leakage flux of the magnetic isolation bridge 300 is used to limit the leakage flux, thereby achieving the purpose of reducing the leakage flux. It should be understood that the iron core 110 is formed by stacking multiple layers of soft magnetic materials, and the soft magnetic material commonly used is silicon steel. The magnetic isolation bridge 300 is integrally punched out during the stamping of the silicon steel sheet, so that multiple iron cores 110 can be connected in sequence. Since the iron core 110 is formed by stacking multiple layers of silicon steel sheets, the magnetic isolation bridge 300 can be set in one or a few layers of silicon steel sheets, which is conducive to reducing the leakage flux. For example, the first and last layers of silicon steel sheets can be provided with a magnetic isolation bridge 300, and multiple iron cores 110 are connected into a chain structure, corresponding to the structure of the insulating frame chain 200, which is convenient for assembly.

It can be understood that two adjacent cores 110 are connected by magnetic isolation bridges 30. Since the core 110 has multiple layers of silicon steel sheets, there are many ways to arrange the magnetic isolation bridges 300. Considering the mutual influence of the electromagnetic field, it is a better solution that the silicon steel sheets distributed by the two adjacent groups of magnetic isolation bridges 300 are different in the circumferential direction of the core component 100. Referring to Figure 9, from the top view of the core component 100, not all silicon steel sheets are provided with magnetic isolation bridges 300, but are selectively arranged. As shown in Figure 10, the magnetic isolation bridges 300 of the first group are distributed in the odd first layer, the even first layer, the odd last layer and the even last layer of the silicon steel sheet, and the magnetic isolation bridges 300 of the second group are distributed in the odd second layer, the even second layer, the odd second to last layer and the even second to last layer of the silicon steel sheet, and the cycle is repeated. As shown in Figures 11 and 12, multiple groups of magnetic isolation bridges 300 can also be arranged in an X shape, so as to achieve less magnetic leakage under the premise of multiple cores 110 being connected.

8 , it can be understood that the magnetic isolation bridge 300 is located between the boots 140 of two adjacent cores 110 , and a bending groove 301 is provided on the side of the magnetic isolation bridge 300 facing the yoke 120 , and during the bending process of the core component 100 , the bending groove 301 is beneficial to the bending deformation of the magnetic isolation bridge 300 , and the bending radius of the bending groove 301 is preferably 0.01r.

The stator core assembly according to the embodiment of the present invention has at least the following beneficial effects: the multiple cores of the core component are connected as a whole through the insulating frame chain, which is beneficial to reducing the leakage magnetic amount between the boots of the multiple cores, and is beneficial to improving the efficiency of electromagnetic energy conversion and improving the performance of the motor; moreover, the teeth of the core are installed in the through cavity of the insulating frame, and after the core component is bent into a round shape, the insulating frame chain can improve the structural strength of the stator core assembly and improve the durability.

The stator (not shown in the figure) proposed in the second embodiment of the present application includes the stator core assembly and winding of the above embodiment, the stator core assembly includes a core component 100 and an insulating frame chain 200, the core component 100 includes a plurality of cores 110, the core 110 includes a connected yoke 120, a tooth 130 and a boot 140, the yoke 120 and the boot 140 are distributed at both ends of the tooth 130, along the circumference of the core component 100 (for the annular core component 100), the boot 140 is arranged on both sides of the tooth 130, and the boots 140 of two adjacent cores 110 are close to each other but not in contact. The winding is sleeved on the outside of the tooth 130, and the winding is limited by the boot 140 in the radial direction to prevent the winding from shifting or detaching.

8, along the circumference of the core component 100, a clamping strip 121 is provided on one side of the yoke 120, and a clamping slot 122 is provided on the other side. When a plurality of cores 110 are assembled into a ring-shaped core component 100, the clamping strip 121 of one of the two adjacent cores 110 is provided on the other side. The bar 121 is inserted into another slot 122 , and the yokes 120 of the plurality of cores 110 are combined into a ring body, so that the core component 100 has a stable structure and improves the reliability of use.

It is understandable that the multiple cores 110 of the core component 100 can be independent components, and the multiple cores 110 are connected as a whole through the insulating frame chain 200; or the multiple cores 110 can be connected through a magnetic isolation bridge.

1 and 2 , the insulating frame chain 200 includes a plurality of insulating frames 210 connected in sequence. Two adjacent insulating frames 210 are connected to each other to form the insulating frame chain 200 . The two insulating frames 210 may be directly connected or connected via a connecting portion.

Referring to FIG. 5 and FIG. 6 , it can be understood that the insulating frame 210 is provided with a through cavity 211, the shape of the through cavity 211 is consistent with the shape of the tooth portion 130, and the tooth portion 130 of the core 110 is installed in the through cavity 211, so as to be fixedly connected to the insulating frame 210. Considering that the wire of the winding is wound on the outside of the insulating frame 210, the insulating frame 210 should separate the core 110 from the wire of the winding, so the insulating frame 210 surrounds the core 110, and has a boot baffle 212 and a yoke baffle 213 at both ends of the through cavity 211, the boot baffle 212 abuts against the side of the boot 140 facing the yoke 120, and the yoke baffle 213 abuts against the side of the yoke 120 facing the boot 140, so as to prevent the wire of the winding from contacting the core 110 and avoiding short circuit. The boot baffle 212 and the yoke baffle 213 simultaneously limit the position of the tooth portion 130 in the through cavity 211 to prevent displacement.

The stator core assembly consists of a core component 100 and an insulating frame chain 200. The multiple cores 110 of the core component 100 are connected as a whole through the insulating frame chain 200, which is beneficial to reducing the leakage magnetic flux between the boots 140 of the multiple cores 110, and is beneficial to improving the electromagnetic energy conversion efficiency of the stator and improving the performance of the motor (especially the outer rotor motor); moreover, the tooth portion 130 of the core 110 is installed in the through cavity 211 of the insulating frame 210. After the core component 100 is bent into a round shape, the insulating frame chain 200 can improve the structural strength of the stator core assembly and improve durability.

The motor proposed in the third aspect of the present application includes the stator of the above embodiment and has all the technical effects of the stator, which will not be elaborated herein.

The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

Stator core assembly, including:

a core component, comprising a plurality of cores; and

An insulating frame chain, comprising a plurality of insulating frames connected in sequence;

Wherein, the iron core comprises a connected yoke, a tooth and a boot, the boot is arranged at one end of the tooth away from the yoke, the insulating frame is provided with a penetration cavity, and the tooth is installed in the penetration cavity.
The stator core assembly according to claim 1, wherein the core corresponds to the insulation frame one by one.
According to the stator core assembly according to claim 1 or 2, wherein the insulating frame is provided with a boot baffle, the boot baffle abuts against the side of the boot facing the yoke, and a clearance groove is formed between the boot baffles of two adjacent insulating frames.
The stator core assembly according to claim 3, wherein the give way slot is fan-shaped and has an included angle of α, the number of the cores is x, and the product of α and x is greater than or equal to 360°.
The stator core assembly according to claim 3 or 4, wherein a bending groove is provided on the side of the boot baffle away from the boot, the bending groove is arranged along the axial direction of the core component, and along the circumferential direction of the core component, one bending groove is distributed on each side of the give way groove.
The stator core assembly according to claim 5, wherein the outer side surface of the boot is an arc surface and the curvature radius of the arc surface is r, and the wall surface of the bending groove is a cylindrical surface and the radius of the cylindrical surface is 0.002r to 0.007r.
The stator core assembly according to any one of claims 3 to 6, wherein the insulating frame is provided with a yoke baffle, the yoke baffle abuts against the yoke, and the edge of the yoke baffle is provided with a hook corner, and the hook corner extends toward the boot.
The stator core assembly according to any one of claims 1 to 7, wherein the outer side surface of the boot is an arc surface and the curvature radius of the arc surface is r, along the circumference of the arc surface, the width of the inner side surface of the boot is c, the length of the insulating frame chain is L, the number of the cores is x, and the following condition is satisfied: xc＜L＜2xr*sin(180°/x).
According to any one of claims 1 to 8, the insulating frame chain comprises a first frame chain and a second frame chain, the first frame chain and the second frame chain are spliced into the insulating frame chain and are arranged on both axial sides of the core component.
The stator core assembly according to any one of claims 1 to 9, wherein the insulating frame chain is an integrated structure, and the insulating frame chain and the core component are integrally formed through a plastic coating process.
The stator core assembly according to any one of claims 1 to 10, wherein a plurality of the core components The iron cores are independent of each other, and a plurality of the iron cores are connected by the insulating frame chain.
The stator core assembly according to any one of claims 1 to 11, wherein a plurality of the cores are arranged in sequence, and two adjacent cores are connected by a magnetic isolation bridge.
The stator core assembly according to claim 12, wherein the core is a multi-layer silicon steel sheet laminated structure, the magnetic isolation bridge connects one layer of the silicon steel sheet of two adjacent core components, and along the circumferential direction of the core components, the layers of two adjacent groups of the magnetic isolation bridges are different.
The stator core assembly according to claim 12 or 13, wherein the magnetic isolation bridge is located between the boots of two adjacent cores, and a curved groove is provided on the side of the magnetic isolation bridge facing the yoke.
A stator comprising the stator core assembly according to any one of claims 1 to 14.
An electric motor comprising the stator according to claim 15.