CN115765231A - Stator iron core assembly, stator and motor - Google Patents
Stator iron core assembly, stator and motor Download PDFInfo
- Publication number
- CN115765231A CN115765231A CN202211421241.4A CN202211421241A CN115765231A CN 115765231 A CN115765231 A CN 115765231A CN 202211421241 A CN202211421241 A CN 202211421241A CN 115765231 A CN115765231 A CN 115765231A
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- cores
- core assembly
- stator core
- insulating frame
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000008358 core component Substances 0.000 claims abstract description 53
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000005452 bending Methods 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 20
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000007493 shaping process Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 26
- 238000004804 winding Methods 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator core assembly, a stator and a motor, wherein the stator core assembly comprises a core component and an insulating frame chain, the core component comprises a plurality of cores, and the insulating frame chain comprises a plurality of insulating frames which are sequentially connected; the iron core comprises a yoke portion, a tooth portion and a shoe portion which are connected, the shoe portion is arranged at one end, away from the yoke portion, of the tooth portion, a penetrating cavity is formed in the insulating frame, and the tooth portion is installed in the penetrating cavity. The plurality of iron cores of the iron core component are connected into a whole through the insulating frame chain, so that the magnetic leakage quantity among the boot parts of the plurality of iron cores is reduced, the electromagnetic energy conversion efficiency is improved, and the performance of the motor is improved; and, the tooth portion of iron core is installed in insulating frame's the chamber of wearing to establish, and after the shaping of iron core part rounding, insulating frame chain can improve the structural strength of stator core subassembly, improves the durability.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a stator core assembly, a stator and a motor.
Background
In the related art, in the manufacturing process of the motor, the bar-shaped iron core needs to be rounded to obtain an annular iron core, so as to perform the next manufacturing process. Traditional bar iron core's structure when carrying out the iron core towards the piece, makes the iron core towards the piece into the pole shoe interconnect's of a plurality of iron cores structure, and its outside insulating frame is then mutually independent, can load and unload alone, and in this kind of structure, direct linking to each other between the pole shoe of a plurality of iron cores leads to electromagnetic energy conversion's efficiency lower, influences external rotor electric machine's performance.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the stator core assembly which can effectively improve the efficiency of electromagnetic energy conversion.
The invention also provides a stator applying the stator core assembly.
The invention also provides a motor applying the stator.
The stator core assembly according to the embodiment of the first aspect of the invention comprises a core component and an insulating frame chain, wherein the core component comprises a plurality of cores, and the insulating frame chain comprises a plurality of insulating frames which are sequentially connected; the iron core comprises a yoke portion, a tooth portion and a shoe portion which are connected, the shoe portion is arranged at one end, away from the yoke portion, of the tooth portion, a penetrating cavity is formed in the insulating frame, and the tooth portion is installed in the penetrating cavity.
The stator core assembly according to the embodiment of the first aspect of the present invention has at least the following advantages: the plurality of iron cores of the iron core component are connected into a whole through the insulating frame chain, so that the magnetic leakage quantity among the boot parts of the plurality of iron cores is reduced, the electromagnetic energy conversion efficiency is improved, and the performance of the motor is improved; moreover, the tooth portion of iron core is installed in insulating frame's the chamber of wearing to establish, and after the shaping of iron core component radius, insulating frame chain can improve stator core subassembly's structural strength, improves the durability.
According to some embodiments of the first aspect of the present invention, the cores are in one-to-one correspondence with the insulating frames.
According to some embodiments of the first aspect of the present invention, the insulating frames are provided with shoe baffles, the shoe baffles abut against the side of the shoe portion facing the yoke portion, and a relief groove is formed between the shoe baffles of two adjacent insulating frames.
According to some embodiments of the first aspect of the present invention, the abdicating groove is a sector and has an included angle α, the number of the iron cores is x, and a product of α and x is greater than or equal to 360 °.
According to some embodiments of the first aspect of the present invention, the side of the shoe part baffle plate facing away from the shoe part is provided with bending grooves, the bending grooves are arranged along the axial direction of the core component, and one bending groove is distributed on each of two sides of the avoiding groove along the circumferential direction of the core component.
According to some embodiments of the first aspect of the present invention, the outer side surface of the shoe part is a circular arc surface and a radius of curvature of the circular 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 first aspect of the present invention, the insulating frame is provided with a yoke stop abutting against the yoke, an edge of the yoke stop being provided with a hook angle extending towards the shoe.
According to some embodiments of the first aspect of the present invention, the outer side surface of the shoe part is a circular arc surface and a radius of curvature of the circular arc surface is r, a width of the inner side surface of the shoe part along a circumferential direction of the circular arc surface is c, a length of the insulating frame chain is L, and the number of the iron cores is x, and satisfies: xc < L < 2xr sin (180 °/x).
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 being split into the insulating frame chain and being arranged on both axial sides of the core component.
According to some embodiments of the first aspect of the present invention, the insulating frame chain is a unitary structure, and the insulating frame chain and the core component are integrally formed by a plastic-covered process.
According to some embodiments of the first aspect of the present invention, the plurality of cores of the core assembly are independent of each other, and the plurality of cores are connected by the insulating frame chain.
According to some embodiments of the first aspect of the present invention, a plurality of the cores are arranged in sequence, and two adjacent cores are connected by a magnetic isolation bridge.
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 sheets of two adjacent iron core components, and the two adjacent magnetic isolation bridges are located at different levels along the circumferential direction of the iron core components.
According to some embodiments of the first aspect of the present invention, the magnetic bridge is located between the shoes of two adjacent iron cores, and a side of the magnetic bridge facing the yoke is provided with a curved groove.
A stator according to an embodiment of the second aspect of the invention comprises a stator core assembly as described in the embodiment of the first aspect.
The motor according to the embodiment of the third aspect of the invention comprises the stator as described in the embodiment of the second aspect.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a front view of an extended state of a stator core assembly according to an embodiment of the first aspect of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged partial view taken at B in FIG. 1;
FIG. 4 is an exploded view of a stator core assembly in accordance with an embodiment of the first aspect of the present invention;
FIG. 5 is an enlarged partial view at C of FIG. 4;
FIG. 6 is a schematic partial structural view of a stator core assembly in accordance with an embodiment of the first aspect of the present invention;
fig. 7 is a cross-sectional view of a core component in accordance with an embodiment of the first aspect of the present invention;
fig. 8 is a partial front view of a core component in further embodiments of the first aspect of the present invention;
FIG. 9 is a partial top view of the core component of FIG. 8;
FIG. 10 is a first schematic view of the arrangement of the magnetic shield bridge according to the first embodiment of the present invention;
FIG. 11 is a second schematic view of the arrangement of the magnetic shield bridge according to the first embodiment of the present invention;
FIG. 12 is a third schematic view illustrating the arrangement of the magnetic isolation bridge in the first embodiment of the present invention.
The reference numbers are as follows:
the core assembly 100, the core 110, the yoke 120, the clip strips 121, the clip grooves 122, the teeth 130, and the shoes 140;
the insulation frame chain 200, the insulation frame 210, the through cavity 211, the boot part baffle 212, the yoke part baffle 213, the abdicating slot 214, the bending slot 215, the hook angle 216, the first frame chain 220, the second frame chain 230 and the boss 231;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the related art, a stator of an outer rotor motor is composed of an iron core and a winding, and the winding is mounted on the iron core through an insulating frame. The iron core is usually by flaky iron core towards the piece and carry out the rounding, obtains annular iron core, when processing the iron core towards the piece, makes the iron core towards the piece and be the structure of a plurality of iron core's pole shoe interconnect, and its outside insulating frame is then mutually independent, can load and unload alone, because the pole shoe of a plurality of iron cores is direct continuous, leads to electromagnetic energy conversion's efficiency lower, and the magnetic leakage volume is great, influences the performance of external rotor motor.
Therefore, the embodiment of the first aspect of the invention provides a stator core assembly applied to a motor, which can effectively reduce the magnetic leakage, improve the efficiency of electromagnetic energy conversion, and is beneficial to improving the performance of the motor.
Referring to fig. 1 to 6, a stator core assembly according to an embodiment of the first aspect of the present invention includes a core member 100 and an insulating frame chain 200, the core member 100 includes a plurality of cores 110, and the cores 110 are usually made of a soft magnetic material, usually silicon steel, which is a material when magnetization occurs at Hc of not more than 1000A/m, also called soft magnetic body. The soft magnetic material can realize maximum magnetization intensity with minimum external magnetic field, and has low coercive force and high magnetic conductivity. 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 the yoke 120, the tooth 130 and the shoes 140 connected to each other, the yoke 120 and the shoes 140 are distributed at both ends of the tooth 130, the shoes 140 are arranged at both sides of the tooth 130 along the circumferential direction of the core component 100 (for the ring-shaped core component 100), and the shoes 140 of two adjacent cores 110 are close to each other without contact. The stator windings are fitted around the outside of the teeth 130, and are radially confined by the shoes 140, preventing the windings from being displaced or disengaged.
Referring to fig. 8, in the circumferential direction of the core component 100, one side of the yoke portion 120 is provided with a clamping strip 121, and the other side is provided with a clamping groove 122, when the plurality of cores 110 are assembled into the annular core component 100, the clamping strip 121 of one of the two adjacent cores 110 is clamped into the other clamping groove 122, and the yoke portions 120 of the plurality of cores 110 are assembled into an annular body, so that the core component 100 has a stable structure and the use reliability is improved.
It is understood that the plurality of cores 110 of the core unit 100 may be independent units, and the plurality of cores 110 are connected as a single unit by the insulating frame chain 200; the plurality of cores 110 may be connected by a magnetic isolation bridge, and the plurality of cores 110 may be connected to the insulating frame chain 200, which will be described in detail later.
Referring to fig. 1 and 2, the insulation frame chain 200 includes a plurality of insulation frames 210 connected in sequence, two adjacent insulation frames 210 are connected to each other to form the insulation frame chain 200, two adjacent insulation frames 210 may be directly connected, or two adjacent insulation frames 210 may be connected through a connection portion.
Referring to fig. 5 and 6, it can be understood that the insulating frame 210 is provided with a penetration cavity 211, the shape of the penetration cavity 211 is identical to that of the tooth portion 130, and the tooth portion 130 of the core 110 is fitted in the penetration cavity 211 so as to be fixedly coupled to the insulating frame 210. Considering that the wire of the winding is wound outside the insulating frame 210, the insulating frame 210 separates the core 110 from the wire of the winding, so that the insulating frame 210 surrounds the core 110, and the through cavity 211 has a shoe baffle 212 and a yoke baffle 213 at both ends, the shoe baffle 212 abuts against the side of the shoe 140 facing the yoke 120, and the yoke baffle 213 abuts against the side of the yoke 120 facing the shoe 140, thereby preventing the wire of the winding from contacting the core 110 and avoiding short circuit. The shoe shield 212 and the yoke shield 213 simultaneously define the position of the tooth 130 in the through cavity 211, preventing displacement.
Referring to fig. 4 and 5, it can be understood that the insulating frame chain 200 is formed by splicing 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 respectively have half slots, the two half slots form a through cavity 211, and 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 understood that the insulating frame chain 200 may be a single part, which is formed on the outer side of the core part 100 by an over-molding process of integral injection molding to surround the plurality of cores 110.
The stator core assembly of some embodiments of the present invention is composed of the core component 100 and the insulating frame chain 200, the plurality of cores 110 of the core component 100 are mutually independent and connected into a whole through the insulating frame chain 200, the core component 100 does not need to punch the punching sheet with the connected pole shoes in production, the shoe parts 140 of the plurality of cores 110 are separated, thereby reducing the magnetic leakage, being beneficial to improving the efficiency of electromagnetic energy conversion 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 insulation frame 210, and after the core component 100 is formed by rounding, the insulation frame chain 200 can improve the structural strength of the stator core component and improve the durability.
It is understood that the cores 110 correspond to the insulation frames 210 one-to-one, that is, the core members 100 fill the installation positions of the insulation frame chains 200, there are no empty slots on the insulation frame chains 200 after assembly, and the shape and cross section of the through cavities 211 of each insulation frame 210 are the same as those of the teeth 130. In design, the through cavity 211 may be pre-configured with a certain relief hole to facilitate assembly of the core 110.
Referring to fig. 1 to 5, it can be understood that two adjacent insulating frames 210 are connected by the shoe baffles 212 to form the insulating frame chain 200, and considering that the iron core assembly 100 and the insulating frame chain 200 need to be rounded, an abdicating groove 214 is formed between the shoe baffles 212 of the two adjacent insulating frames 210, and in the process of rounding, the abdicating groove 214 is used to prevent the shoe baffles 212 of the two adjacent insulating frames 210 from interfering, thereby avoiding affecting the forming of the stator iron core assembly and preventing the stator iron core assembly from deforming and twisting.
Referring to fig. 2, it can be understood that the relief slots 214 are fan-shaped and have an included angle α, the number of the cores 110 in the core component 100 is x, and the product of α and x is equal to 360 ° in design, and when the stator core assembly is bent into a ring shape, the shoe baffles 212 of two adjacent insulating frames 210 abut, and the insulating frame chain 200 forms a complete ring shape. Considering the manufacturing error, in design, the better scheme is that the product of alpha and x is required to be larger than 360 degrees, a certain gap is reserved, the process of bending the stator core assembly is facilitated, the assembly efficiency is improved, the manufacturing precision of the insulating frame chain 200 is reduced, and the cost is reduced.
It can be understood that, as shown in fig. 5, the edge of the boot blocking plate 212 of two adjacent insulating frames 210 is provided with a side plate, the two side plates form an inverted V-shaped structure to form the abdicating groove 214, and the inverted V-shaped structure improves the connection strength, is not easy to break, facilitates the deformation of the insulating frame chain 200, and improves the durability.
Referring to fig. 1 and 2, it can be understood that the shoe baffle 212 is also deformed during the rounding of the insulating frame chain 200, and therefore, the bending groove 215 is provided on the side of the shoe baffle 212 facing away from the shoe 140, and considering that the deformation of the shoe baffle 212 is expanded in the circumferential direction, the bending groove 215 is arranged along the axial direction of the core component 100, and the expansion of the bending groove 215 is utilized to reduce the deformation of the shoe baffle 212 during the rounding of the insulating frame chain 200, thereby being beneficial to protecting the insulating frame chain 200 and reducing the risk of fracture. Considering that the position where the deformation is the largest in the insulation frame chain 200 is the position of the yielding groove 214 when the insulation frame chain 200 is bent round, two bending grooves 215 are arranged at the position of each yielding groove 214 in the circumferential direction of the iron core component 100, one bending groove 215 is respectively distributed at each of two sides of the yielding groove 214, and the two bending grooves 215 are utilized to disperse the deformation, which is beneficial to reducing the deformation of the boot baffle 212, preventing the breakage and improving the reliability.
Referring to fig. 7 and 8, it can be understood that the outer side surface of the shoe part 140 is a circular arc surface and the curvature radius of the circular arc surface is r, as shown in fig. 2, 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, wherein the radius of the cylindrical surface is preferably 0.005r, and the sectional area of the bending groove 215 is suitable and the machining is convenient on the premise of satisfying the deformation.
Referring to fig. 1 and 3, it can be understood that a hook 216 is provided at an edge of the yoke guard 213, the hook 216 extending toward the shoe 140, and the hook 216 is used to help define the winding and prevent the wire of the winding from moving to contact the core 110, thereby preventing a short circuit problem. The hook 216 may be disposed on each of both side edges of the yoke damper 213, or a plurality of hook 216 may be disposed on each of both side edges of the yoke damper 213, and the hook 216 may be manufactured by an integral injection molding process, which is low in cost.
Referring to fig. 7, it can be understood that the outer side surface of the shoe part 140 is an arc surface and the radius of curvature of the arc surface is r, the width of the inner side surface of the shoe part 140 is c along the circumferential direction of the arc surface, the length of the insulating frame chain 200 is L, and the number of the cores 110 in the core member 100 is x, which satisfies in design: xc < L < 2xr sin (180 °/x) so that the length of the insulating frame chain 200 fits the rounded core component 100 sufficiently to accommodate the core component 100 and avoid excessive deformation.
Referring to fig. 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 pieced into the insulating frame chain 200 and are disposed at both axial sides of the core part 100, and the first frame chain 220 and the second frame chain 230 cooperate to clamp the core part 100. Structurally, divide into first frame chain 220 and second frame chain 230 with insulation frame chain 200, be favorable to manufacturing, reduce injection mold's complexity, moreover to a plurality of iron core 110 mutually independent structures, split type insulation frame chain 200 is favorable to assembling iron core 110 one by one. The first frame chain 220 and the second frame chain 230 can be connected and fixed through mutually matched buckles or plug connectors, and in addition, the windings of the stator can also limit the first frame chain 220 and the second frame chain 230 to play a role in fixing.
Referring to fig. 6, the first frame chain 220 and the second frame chain 230 sandwich the core component 100 from both sides, and a boss 231 is provided on an outer side surface of the second frame chain 230 facing away from the core component 100, the boss 231 is used for cooperating with a winding machine to fix the stator core assembly, thereby facilitating a winding operation.
Referring to fig. 8 and 9, in some embodiments, a plurality of iron cores 110 are sequentially arranged, 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, and the leakage flux is limited by using the low saturation value of the leakage flux of the magnetic isolation bridge 300, so as to achieve the purpose of reducing the leakage flux. It should be understood that the core 110 is formed by laminating multiple layers of soft magnetic materials, the soft magnetic material is silicon steel, and the magnetic isolation bridge 300 is integrally stamped in the stamping process of the silicon steel sheet, so that the multiple cores 110 are connected in sequence. Because the iron core 110 is formed by the multilayer silicon steel sheet coincide, set up in one deck or few layers of silicon steel sheet among them and separate magnetic bridge 300 can, be favorable to reducing the magnetic leakage volume, for example can be that first layer and last layer silicon steel sheet are provided with and separate magnetic bridge 300, and a plurality of iron cores 110 are connected to chain form structure, correspond to the structure of insulating frame chain 200, convenient assembly.
It can be understood that two adjacent iron cores 110 are connected by the magnetic isolation bridge 30, and since the iron cores 110 have multiple layers of silicon steel sheets, there are multiple arrangements of the magnetic isolation bridge 300, and considering the mutual influence of electromagnetic fields, it is preferable that the silicon steel sheets distributed by two adjacent groups of magnetic isolation bridges 300 are different in level in the circumferential direction of the iron core component 100. Referring to fig. 9, in a top view of the core member 100, not all the silicon steel sheets are provided with the magnetic isolation bridges 300, but are selectively arranged, as shown in fig. 10, the magnetic isolation bridges 300 of the first group are distributed on the odd-numbered first layer, the even-numbered first layer, the odd-numbered last layer, and the even-numbered last layer of the silicon steel sheets, and the magnetic isolation bridges 300 of the second group are distributed on the odd-numbered second layer, the even-numbered second layer, the odd-numbered penultimate layer, and the even-numbered penultimate layer of the silicon steel sheets, and the cycle is performed in this way. As shown in fig. 11 and 12, the plurality of sets of magnetic bridges 300 may be arranged in an X shape, so that a smaller amount of leakage flux is achieved on the premise that the plurality of cores 110 are connected.
Referring to fig. 8, it can be understood that the magnetic bridge 300 is located between the shoes 140 of two adjacent iron cores 110, the side of the magnetic bridge 300 facing the yoke 120 is provided with a curved slot 301, during the process of rounding the iron core component 100, the curved slot 301 facilitates the bending deformation of the magnetic bridge 300, and the bending radius of the curved slot 301 is preferably 0.01 r.
A stator (not shown in the drawings) according to an embodiment of a second aspect of the present invention includes the stator core assembly and the winding according to the embodiment of the first aspect, 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 cores 110 include a yoke portion 120, a tooth portion 130 and a shoe portion 140, the yoke portion 120 and the shoe portion 140 are distributed at two ends of the tooth portion 130, the shoe portion 140 is arranged at two sides of the tooth portion 130 along a circumferential direction of the core component 100 (for the ring-shaped core component 100), and the shoe portions 140 of two adjacent cores 110 are close to each other without contacting each other. The windings are fitted around the outside of the teeth 130, and are confined by the shoes 140 in the radial direction, preventing the windings from being displaced or disengaged.
Referring to fig. 8, in the circumferential direction of the core component 100, one side of the yoke portion 120 is provided with a clip strip 121, and the other side is provided with a clip groove 122, when the plurality of cores 110 are assembled into the annular core component 100, the clip strip 121 of one of two adjacent cores 110 is clipped into the other clip groove 122, and the yoke portions 120 of the plurality of cores 110 are assembled into an annular body, so that the core component 100 has a stable structure and the use reliability is improved.
It is understood that the plurality of cores 110 of the core unit 100 may be independent units, and the plurality of cores 110 are connected as a single unit by the insulating frame chain 200; the plurality of iron cores 110 may be connected by a magnetic isolation bridge.
Referring to fig. 1 and 2, the insulation frame chain 200 includes a plurality of insulation frames 210 connected in sequence, and two adjacent insulation frames 210 are connected to each other to form the insulation frame chain 200, where the two insulation frames 210 are directly connected, or the two insulation frames 210 are connected by a connection portion.
Referring to fig. 5 and 6, it can be understood that the insulating frame 210 is provided with a penetration cavity 211, the shape of the penetration cavity 211 is identical to that of the tooth portion 130, and the tooth portion 130 of the core 110 is fitted in the penetration cavity 211 so as to be fixedly coupled to the insulating frame 210. Considering that the wire of the winding is wound outside the insulating frame 210, the insulating frame 210 separates the core 110 from the wire of the winding, so that the insulating frame 210 surrounds the core 110, and has a shoe baffle 212 and a yoke baffle 213 at both ends of the through cavity 211, the shoe baffle 212 abuts against the side of the shoe 140 facing the yoke 120, and the yoke baffle 213 abuts against the side of the yoke 120 facing the shoe 140, thereby preventing the wire of the winding from contacting the core 110 and avoiding short circuit. The shoe shield 212 and the yoke shield 213 simultaneously define the position of the tooth 130 in the through cavity 211, preventing displacement.
The stator core assembly consists of the core component 100 and the insulating frame chains 200, the plurality of cores 110 of the core component 100 are connected into a whole through the insulating frame chains 200, which is beneficial to reducing the magnetic leakage quantity among the boots 140 of the plurality of cores 110, improving the electromagnetic energy conversion efficiency of the stator and improving the performance of the motor (especially an outer rotor motor); moreover, the tooth portion 130 of the core 110 is installed in the through cavity 211 of the insulation frame 210, and after the core component 100 is formed by rounding, the insulation frame chain 200 can improve the structural strength of the stator core component and improve the durability.
The motor provided by the embodiment of the third aspect of the present invention includes the stator of the embodiment of the second aspect, and has all technical effects of the stator, which are not described again.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (16)
1. A stator core assembly, comprising:
a core member including a plurality of cores;
the insulating frame chain comprises a plurality of insulating frames which are connected in sequence;
the iron core comprises a yoke portion, a tooth portion and a shoe portion which are connected, the shoe portion is arranged at one end, away from the yoke portion, of the tooth portion, a penetrating cavity is formed in the insulating frame, and the tooth portion is installed in the penetrating cavity.
2. The stator core assembly of claim 1 wherein said cores are in one-to-one correspondence with said insulating frames.
3. The stator core assembly according to claim 1, wherein the insulating frames are provided with shoe baffles, the shoe baffles abut against the side of the shoe facing the yoke, and a relief groove is formed between the shoe baffles of two adjacent insulating frames.
4. The stator core assembly according to claim 3, wherein the relief slots are fan-shaped and have an included angle α, the number of cores is x, and the product of α and x is equal to or greater than 360 °.
5. The stator core assembly according to claim 3, wherein the side of the shoe baffle facing away from the shoe is provided with a bending groove, the bending groove is arranged along the axial direction of the core component, and the bending groove is distributed on each of two sides of the abdicating groove along the circumferential direction of the core component.
6. The stator core assembly according to claim 5, wherein the outer side surface of the shoe portion is a circular arc surface and a radius of curvature of the circular 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, wherein the insulating frame is provided with a yoke stop abutting against the yoke, an edge of the yoke stop being provided with a hook angle extending towards the shoe.
8. The stator core assembly according to claim 1, wherein the outer side of the shoe part is a circular arc surface and the radius of curvature of the circular arc surface is r, the width of the inner side of the shoe part is c along the circumferential direction of the circular arc surface, the length of the insulating frame chain is L, the number of the cores is x, and the following requirements are satisfied: xc < L < 2xr sin (180 °/x).
9. The stator core assembly according to any one of claims 1 to 8, wherein the insulating frame chains comprise first frame chains and second frame chains, the first frame chains and the second frame chains being split into the insulating frame chains and arranged on both axial sides of the core component.
10. The stator core assembly according to any one of claims 1 to 8, wherein the insulating frame chains are of a unitary construction, the insulating frame chains being integrally formed with the core components by a plastic-over-molding process.
11. The stator core assembly according to any one of claims 1 to 8, wherein a plurality of said cores of said core assembly are independent of each other, and a plurality of said cores are connected by said insulating frame chain.
12. A stator core assembly according to any one of claims 1 to 8, wherein a plurality of said cores are arranged in sequence, adjacent two of said cores being connected by a magnetic isolation bridge.
13. The stator core assembly according to claim 12, wherein the core is a multi-layer silicon steel sheet laminated structure, the magnetic isolation bridges connect one layer of the silicon steel sheets of two adjacent core components, and the two adjacent groups of the magnetic isolation bridges are located at different levels along the circumferential direction of the core components.
14. The stator core assembly according to claim 12, wherein said magnetic bridge is located between said shoes of two adjacent said cores, said magnetic bridge being provided with a curved slot on a side facing said yoke.
15. A stator comprising a stator core assembly according to any one of claims 1 to 14.
16. An electrical machine comprising a stator as claimed in claim 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211421241.4A CN115765231A (en) | 2022-11-14 | 2022-11-14 | Stator iron core assembly, stator and motor |
| PCT/CN2023/125228 WO2024104042A1 (en) | 2022-11-14 | 2023-10-18 | Stator core assembly, stator, and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211421241.4A CN115765231A (en) | 2022-11-14 | 2022-11-14 | Stator iron core assembly, stator and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115765231A true CN115765231A (en) | 2023-03-07 |
Family
ID=85370248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211421241.4A Pending CN115765231A (en) | 2022-11-14 | 2022-11-14 | Stator iron core assembly, stator and motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115765231A (en) |
| WO (1) | WO2024104042A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024104042A1 (en) * | 2022-11-14 | 2024-05-23 | 广东威灵电机制造有限公司 | Stator core assembly, stator, and motor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204761174U (en) * | 2015-05-15 | 2015-11-11 | 温岭市宇海机电有限公司 | Cut apart type motor stator |
| CN108768022A (en) * | 2018-07-13 | 2018-11-06 | 卧龙电气集团股份有限公司 | A kind of rotor punching, rotor core and motor |
| CN110829665B (en) * | 2018-08-14 | 2022-06-10 | 三花亚威科电器设备（芜湖）有限公司 | Stator module, motor and pump |
| JP2020178430A (en) * | 2019-04-17 | 2020-10-29 | ダイキン工業株式会社 | Stator and motor |
| CN110829672A (en) * | 2019-11-22 | 2020-02-21 | 珠海凯邦电机制造有限公司 | Insulating skeleton texture, stator and motor |
| CN113572278B (en) * | 2020-04-29 | 2024-03-22 | 纬湃汽车电子(芜湖)有限公司 | Brushless motor stator and brushless motor |
| CN115765231A (en) * | 2022-11-14 | 2023-03-07 | 广东威灵电机制造有限公司 | Stator iron core assembly, stator and motor |
| CN218569932U (en) * | 2022-11-14 | 2023-03-03 | 广东威灵电机制造有限公司 | Stator iron core assembly, stator and motor |
-
2022
- 2022-11-14 CN CN202211421241.4A patent/CN115765231A/en active Pending
-
2023
- 2023-10-18 WO PCT/CN2023/125228 patent/WO2024104042A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024104042A1 (en) * | 2022-11-14 | 2024-05-23 | 广东威灵电机制造有限公司 | Stator core assembly, stator, and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024104042A1 (en) | 2024-05-23 |
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