Stator core assembly, stator and motor

Abstract

The present invention discloses a stator core assembly, a stator, and a motor, wherein 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, a tooth portion, and a boot portion, wherein the boot portion is arranged at one end of the tooth portion away from the yoke portion, and the insulating frame is provided with a through-hole, wherein the tooth portion is installed in the through-hole. The plurality of cores of the core component are connected as one body by the insulating frame chain, which is beneficial to reducing the amount of magnetic leakage between the boot portions of the plurality of cores, and is beneficial to improving the efficiency of electromagnetic energy conversion and improving the performance of the motor; furthermore, the teeth of the core are installed in the through-hole of the insulating frame, and after the core component is bent and formed, the insulating frame chain can improve the structural strength of the stator core assembly and improve durability.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a stator core assembly, a stator and a motor. Background Art

[0002] In the related art, during the motor manufacturing process, the bar core needs to be bent into a round shape to obtain a ring-shaped iron core for the next manufacturing process. The traditional bar core structure, when punching the core sheets, is manufactured into a structure in which the pole shoes of multiple cores are connected to each other, and the external insulating frames are independent of each other and can be assembled and unassembled 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

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a stator core assembly that can effectively improve the efficiency of electromagnetic energy conversion.

[0004] The present invention also proposes a stator using the stator core assembly.

[0005] The present invention also provides a motor using the stator.

[0006] According to an embodiment of the first aspect of the present invention, a 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, a tooth portion and a boot portion, the boot portion is arranged at an end of the tooth portion away from the yoke portion, and the insulating frame is provided with a through-hole, and the tooth portion is installed in the through-hole.

[0007] The stator core assembly according to the embodiment of the first aspect 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 flux 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-hole cavity of the insulating frame. 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.

[0008] According to some embodiments of the first aspect of the present invention, the iron core corresponds to the insulating frame in a one-to-one manner.

[0009] According to some embodiments of the first aspect of the present invention, the insulating frame is provided with a boot baffle, which 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.

[0010] According to some embodiments of the first aspect of the present invention, the clearance slot is fan-shaped and has an included angle α, the number of the iron cores is x, and the product of α and x is greater than or equal to 360°.

[0011] According to some embodiments of the first aspect of the present invention, 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.

[0012] According to some embodiments of the first aspect of the present invention, 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.

[0013] According to some embodiments of the first aspect of the present invention, 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.

[0014] According to some embodiments of the first aspect of the present invention, the outer side surface of the boot is a circular arc surface and the curvature radius of the circular arc surface is r, along the circumference of the circular 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).

[0015] According to some embodiments of the first aspect of the present invention, the insulating frame chain includes a first frame chain and a second frame chain, the first frame chain and the second frame chain are combined into the insulating frame chain and are arranged on both axial sides of the core component.

[0016] According to some embodiments of the first aspect of the present invention, the insulating frame chain is an integral structure, and the insulating frame chain and the core component are integrally formed through a plastic overmolding process.

[0017] According to some embodiments of the first aspect of the present invention, the multiple cores of the core component are independent of each other, and the multiple cores are connected by the insulating frame chain.

[0018] According to some embodiments of the first aspect of the present invention, a plurality of the iron cores are arranged in sequence, and two adjacent iron cores are connected by a magnetic isolation bridge.

[0019] According to some embodiments of the first aspect of the present invention, the iron 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 iron core components, and along the circumference of the iron core component, the two adjacent groups of magnetic isolation bridges are at different levels.

[0020] According to some embodiments of the first aspect of the present invention, the magnetic isolation bridge is located between the boots of two adjacent cores, and a curved groove is provided on a side of the magnetic isolation bridge facing the yoke.

[0021] A stator according to an embodiment of the second aspect of the present invention includes the stator core assembly as described in the embodiment of the first aspect.

[0022] The motor according to the third embodiment of the present invention includes the stator as described in the second embodiment.

[0023] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments with reference to the accompanying drawings, in which:

[0025] Figure 1 A front view of the stator core assembly in an extended state according to the first embodiment of the present invention;

[0026] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0028] Figure 4 1 is an exploded schematic diagram of a stator core assembly according to an embodiment of the first aspect of the present invention;

[0029] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0030] Figure 6 A schematic diagram of the partial structure of a stator core assembly according to an embodiment of the first aspect of the present invention;

[0031] Figure 7 A cross-sectional view of an iron core component in an embodiment of the first aspect of the present invention;

[0032] Figure 8 A partial front view of a core component in other embodiments of the first aspect of the present invention;

[0033] Figure 9 for Figure 8 A partial top view of the middle core component;

[0034] Figure 10 Schematic diagram of the arrangement of the magnetic isolation bridge in the embodiment of the first aspect of the present invention Figure 1 ;

[0035] Figure 11 Schematic diagram of the arrangement of the magnetic isolation bridge in the embodiment of the first aspect of the present invention Figure 2 ;

[0036] Figure 12 Schematic diagram of the arrangement of the magnetic isolation bridge in the embodiment of the first aspect of the present invention Figure 3 .

[0037] The accompanying figures are as follows:

[0038] Core component 100, core 110, yoke 120, clamping bar 121, clamping groove 122, tooth portion 130, shoe portion 140;

[0039] Insulating frame chain 200, insulating frame 210, penetration cavity 211, boot baffle 212, yoke baffle 213, clearance groove 214, bending groove 215, hook 216, first frame chain 220, second frame chain 230, boss 231;

[0040] Magnetic isolation bridge 300 and curved groove 301. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that descriptions involving orientations, 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. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0043] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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 the present invention based on the specific content of the technical solution.

[0045] In related art, the stator of an outer rotor motor consists of an iron core and windings, with the windings mounted on the iron core via an insulating frame. The iron core is typically formed by bending sheet-like core punchings into a circular shape. During the processing of the core punchings, the core punchings are manufactured into a structure with multiple interconnected pole shoes. The external insulating frame is independent and can be assembled and removed separately. Because the pole shoes of the multiple cores are directly connected, the electromagnetic energy conversion efficiency is low and the magnetic leakage is large, which affects the performance of the outer rotor motor.

[0046] To this end, an embodiment of the first aspect of the present invention proposes a stator core assembly for use in a motor, which can effectively reduce magnetic leakage, improve the efficiency of electromagnetic energy conversion, and help improve the performance of the motor.

[0047] Reference Figures 1 to 6 The stator core assembly proposed in the embodiment of the first aspect of the present invention 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 at Hc 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.

[0048] It is understood that the core 110 includes a connected yoke 120, teeth 130, and boots 140. The yoke 120 and boots 140 are located at both ends of the teeth 130. Along the circumference of the core component 100 (for an annular core component 100), the boots 140 are arranged on both sides of the teeth 130. The boots 140 of two adjacent cores 110 are close to each other but do not touch. The stator winding is sheathed around the teeth 130, with the boots 140 radially confining the winding to prevent displacement or separation.

[0049] Reference Figure 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 multiple 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, and the yokes 120 of the multiple cores 110 are combined into a ring body, so that the core component 100 has a stable structure and improves its reliability.

[0050] 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 one through the insulating frame chain 200; or the multiple cores 110 can be 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.

[0051] Reference Figure 1 and Figure 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 can be directly connected or connected through a connecting portion.

[0052] Reference Figure 5 and Figure 6 It is understood that the insulating frame 210 is provided with a through-hole 211, the shape of which is consistent with that of the tooth portion 130. The tooth portion 130 of the core 110 is installed in the through-hole 211, thereby being fixedly connected to the insulating frame 210. Considering that the winding wire is wound outside the insulating frame 210, the insulating frame 210 is required to separate the core 110 from the winding wire. Therefore, 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-hole 211. The boot baffle 212 abuts the side of the boot 140 facing the yoke 120, and the yoke baffle 213 abuts the side of the yoke 120 facing the boot 140, preventing the winding wire from contacting the core 110 and avoiding short circuits. The boot baffle 212 and the yoke baffle 213 simultaneously define the position of the tooth portion 130 in the through-hole 211 to prevent displacement.

[0053] Reference Figure 4 and Figure 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 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.

[0054] 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.

[0055] The stator core assembly of some embodiments of the present invention 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 separate, which reduces the amount of magnetic leakage, is beneficial to improving 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 into a circle, the insulating frame chain 200 can improve the structural strength of the stator core assembly and improve durability.

[0056] It is understood that the cores 110 correspond one-to-one with the insulating frames 210. That is, the core components 100 completely fill the mounting positions of the insulating frame chain 200. After assembly, there are no empty slots in the insulating frame chain 200. Furthermore, the shape and cross-section of the through-holes 211 of each insulating frame 210 are identical to those of the teeth 130. In terms of design, the through-holes 211 may be pre-set with a certain amount of clearance to facilitate assembly of the cores 110.

[0057] Reference Figures 1 to 5 It can be understood that the two adjacent insulating frames 210 are connected by the boot baffles 212 to form the 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.

[0058] Reference Figure 2 It is understood that the clearance slots 214 are fan-shaped with an included angle α. The number of cores 110 in the core component 100 is x. The design requires that the product of α and x equal 360°. When the stator core assembly is bent into a ring shape, the boots 212 of two adjacent insulating frames 210 abut, forming a complete ring shape for the insulating frame chain 200. However, to account for manufacturing tolerances, the design requires that the product of α and x be greater than 360°. Reserving a certain gap facilitates the bending process of the stator core assembly, improves assembly efficiency, and helps reduce manufacturing precision and cost of the insulating frame chain 200.

[0059] It is understandable that if Figure 5As shown, the edges of the boot baffles 212 of the 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.

[0060] Reference Figure 1 and Figure 2 It is understood that during the bending process of the insulating frame chain 200, the boot baffle 212 will also deform. Therefore, a bending groove 215 is provided on the side of the boot baffle 212 facing away from the boot 140. Considering that the deformation of the boot baffle 212 expands circumferentially, the bending groove 215 is arranged along the axial direction of the core component 100. During the bending process of the insulating frame chain 200, the expansion of the bending groove 215 is utilized to reduce the deformation of the boot baffle 212, which helps protect the insulating frame chain 200 and reduce the risk of breakage. Considering that the location of the insulating frame chain 200 with the greatest deformation during bending is where the clearance groove 214 is located, two bending grooves 215 are arranged at the location of each clearance groove 214 along the circumference of the core component 100, one bending groove 215 on each side of the clearance groove 214. The two bending grooves 215 distribute the deformation, which helps reduce the deformation of the boot baffle 212, prevent breakage, and improve reliability.

[0061] Reference Figure 7 and Figure 8 It can be understood that the outer side surface of the boot portion 140 is an arc surface and the curvature radius of the arc surface is r. Figure 2 As shown, 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 cylindrical radius of 0.005r is the best solution. Under the premise of satisfying deformation, the cross-sectional area of ​​the bending groove 215 is more appropriate and easy to process.

[0062] Reference Figure 1 and Figure 3 As will be appreciated, hooks 216 are provided on the edge of the yoke baffle 213, extending toward the boot 140. These hooks 216 help define the windings, preventing the winding conductors from moving and contacting the core 110, thereby preventing short circuits. One hook 216 can be provided on each side of the yoke baffle 213, or multiple hooks 216 can be provided on each side of the yoke baffle 213. These hooks 216 can be manufactured cost-effectively through an integrated injection molding process.

[0063] Reference Figure 7It can be understood that the outer side surface of the boot 140 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 140 is c, the length of the insulating frame chain 200 is L, and the number of iron cores 110 in the iron core component 100 is x. The design satisfies: xc<L<2xr*sin(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 iron core component 100 and avoid excessive deformation.

[0064] Reference Figure 4 and Figure 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 combined to form the insulating frame chain 200 and are arranged on both axial sides of the core component 100. The first frame chain 220 and the second frame chain 230 cooperate to clamp the core component 100. Structurally, dividing the insulating frame chain 200 into the first frame chain 220 and the second frame chain 230 facilitates processing and manufacturing, reducing the complexity of the injection mold. Furthermore, for a structure in which multiple cores 110 are independent of each other, the split insulating frame chain 200 facilitates the assembly of the cores 110 one by one. The first frame chain 220 and the second frame chain 230 can be connected and fixed by cooperating clips or connectors. Furthermore, the stator windings can also define the first frame chain 220 and the second frame chain 230, thereby securing them.

[0065] Reference Figure 6 The first frame chain 220 and the second frame chain 230 clamp the core component 100 from both sides. 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 the winding machine to fix the stator core assembly to facilitate winding operations.

[0066] Reference Figure 8 and Figure 9 In some embodiments, a plurality of iron cores 110 are arranged in sequence, and two adjacent iron cores 110 are connected by a magnetic isolation bridge 300. 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. The soft magnetic material commonly used is silicon steel. The magnetic isolation bridge 300 is punched out integrally during the stamping of the silicon steel sheet, so that the multiple iron cores 110 are 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. The multiple iron cores 110 are connected in a chain structure, corresponding to the structure of the insulating frame chain 200, which is convenient for assembly.

[0067] It is understandable that the two adjacent cores 110 are connected by the magnetic isolation bridge 30. Since the core 110 has multiple layers of silicon steel sheets, there are many ways to arrange the magnetic isolation bridge 300. Considering the mutual influence of the electromagnetic field, it is a better solution to have the silicon steel sheets distributed in the two adjacent groups of magnetic isolation bridges 300 at different levels in the circumferential direction of the core component 100. 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 provided, such as Figure 10 As shown, the first group of magnetic isolation bridges 300 are distributed in the first odd layer, the first even layer, the last odd layer and the last even layer of the silicon steel sheet, and the second group of magnetic isolation bridges 300 are distributed in the second odd layer, the second even layer, the second to last odd layer and the second to last even layer of the silicon steel sheet, and so on. Figure 11 and Figure 12 As shown, multiple groups of magnetic isolation bridges 300 can also be arranged in an X shape to achieve less magnetic leakage while ensuring that multiple iron cores 110 are connected.

[0068] Reference Figure 8 It can be understood that the magnetic isolation bridge 300 is located between the boots 140 of two adjacent iron cores 110, and a bending groove 301 is provided on the side of the magnetic isolation bridge 300 facing the yoke 120. In the process of bending the iron core component 100, the bending groove 301 is conducive to the bending deformation of the magnetic isolation bridge 300, and the bending radius of the bending groove 301 is preferably 0.01r.

[0069] The stator (not shown) provided in the second embodiment of the present invention includes the stator core assembly and winding of the first embodiment. The stator core assembly includes a core component 100 and an insulating frame chain 200. The core component 100 includes multiple cores 110. The cores 110 include a connected yoke 120, a tooth 130, and a boot 140. The yoke 120 and boot 140 are distributed at both ends of the tooth 130. Along the circumference of the core component 100 (for an annular core component 100), the boot 140 is arranged on both sides of the tooth 130. The boots 140 of two adjacent cores 110 are close to each other but do not touch. The winding is sheathed on the outside of the tooth 130. The boot 140 is used to radially define the winding to prevent it from shifting or detaching.

[0070] Reference Figure 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 multiple 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, and the yokes 120 of the multiple cores 110 are combined into a ring body, so that the core component 100 has a stable structure and improves its reliability.

[0071] 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.

[0072] Reference Figure 1 and Figure 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 through a connecting portion.

[0073] Reference Figure 5 and Figure 6 It is understood that the insulating frame 210 is provided with a through-hole 211, the shape of which is consistent with that of the tooth portion 130. The tooth portion 130 of the core 110 is installed in the through-hole 211, thereby being fixedly connected to the insulating frame 210. Considering that the winding wire is wound outside the insulating frame 210, the insulating frame 210 needs to separate the core 110 from the winding wire. Therefore, 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-hole 211. The boot baffle 212 abuts the side of the boot 140 facing the yoke 120, and the yoke baffle 213 abuts the side of the yoke 120 facing the boot 140, preventing the winding wire from contacting the core 110 and avoiding short circuits. The boot baffle 212 and the yoke baffle 213 simultaneously define the position of the tooth portion 130 in the through-hole 211 to prevent displacement.

[0074] 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 teeth 130 of the core 110 are 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.

[0075] The motor proposed in the third embodiment of the present invention includes the stator of the second embodiment and has all the technical effects of the stator, which will not be described in detail.

[0076] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the spirit of the present invention.

Claims

1. Stator core assembly, characterized in that, include: An iron core component, comprising a plurality of iron cores; An insulating frame chain, comprising a plurality of insulating frames connected in sequence; The iron core includes a connected yoke, a tooth portion, and a boot portion, the boot portion is arranged at one end of the tooth portion away from the yoke portion, the insulating frame is provided with a through-hole, and the tooth portion is installed in the through-hole; The plurality of iron cores are arranged in sequence, and two adjacent iron cores are connected by a magnetic isolation bridge; The iron core is a multi-layer silicon steel sheet laminated structure, and the magnetic isolation bridge connects one layer of the silicon steel sheet of two adjacent iron core components. Along the circumference of the iron core component, the layers of the two adjacent groups of magnetic isolation bridges are different.

2. The stator core assembly according to claim 1, characterized in that The iron core corresponds to the insulating frame one by one.

3. The stator core assembly according to claim 1, wherein: The insulating frame is provided with a boot baffle, which 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.

4. The stator core assembly according to claim 3, characterized in that: The clearance 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°.

5. The stator core assembly according to claim 3, characterized in that: The side of the boot baffle facing away from the boot is provided with a bending groove, the bending groove is arranged along the axial direction of the core component, and along the circumference of the core component, one bending groove is distributed on each side of the give way groove.

6. The stator core assembly according to claim 5, characterized in that: The outer side surface of the boot portion 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.

7. The stator core assembly according to claim 3, characterized in that: The insulating frame is provided with a yoke baffle, the yoke baffle is in contact with the yoke, and the edge of the yoke baffle is provided with a hook corner, and the hook corner extends toward the boot portion.

8. The stator core assembly according to claim 1, characterized in that 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 iron cores is x, satisfying: xc<L<2xr*sin(180° / x).

9. The stator core assembly according to any one of claims 1 to 8, characterized in that: The insulating frame chain includes a first frame chain and a second frame chain. The first frame chain and the second frame chain are combined to form the insulating frame chain and are arranged on both axial sides of the core component.

10. The stator core assembly according to any one of claims 1 to 8, characterized in that: 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.

11. The stator core assembly according to claim 1, characterized in that: The magnetic isolation bridge is located between the boots of two adjacent cores, and a curved groove is provided on a side of the magnetic isolation bridge facing the yoke.

12. A stator, characterized in that The invention comprises the stator core assembly according to any one of claims 1 to 11.

13. A motor, characterized in that Comprising the stator according to claim 12.

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