CN111384792B - Axial motor stator and production process thereof - Google Patents
Axial motor stator and production process thereof Download PDFInfo
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- CN111384792B CN111384792B CN202010477274.5A CN202010477274A CN111384792B CN 111384792 B CN111384792 B CN 111384792B CN 202010477274 A CN202010477274 A CN 202010477274A CN 111384792 B CN111384792 B CN 111384792B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 268
- 238000004804 winding Methods 0.000 claims abstract description 77
- 239000003292 glue Substances 0.000 claims abstract description 70
- 239000000565 sealant Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 238000005266 casting Methods 0.000 claims description 38
- 239000000919 ceramic Substances 0.000 claims description 24
- 238000011049 filling Methods 0.000 claims description 13
- 239000000178 monomer Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
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- 238000004382 potting Methods 0.000 claims description 2
- 239000012812 sealant material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 16
- 238000005538 encapsulation Methods 0.000 abstract description 5
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000010169 landfilling Methods 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
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- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
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- 238000000465 moulding Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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Classifications
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/12—Impregnating, heating or drying of windings, stators, rotors or machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
-
- 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
-
- 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
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides an axial motor stator and a production process thereof, belongs to the technical field of motor stators, and solves the problems of air gaps and poor heat conductivity between an iron core and a coil winding in the prior art. The magnetic core comprises a shell, an iron core and a coil winding sleeved outside the iron core, and is characterized in that an iron core sleeve body is arranged between the iron core and the coil winding, the iron core sleeve body is made of an insulating material, pouring sealant is filled in gaps between the shell and the iron core, between the iron core and the coil winding and between the iron core winding and the shell, and a glue passing channel for the pouring sealant to pass through is arranged on the iron core sleeve body. The minimum distance between the iron core and the coil winding is limited by arranging the iron core sleeve body, the iron core and the coil winding are poured into a whole by encapsulation, the encapsulation strength is ensured, meanwhile, the sufficient insulation thickness is ensured between the iron core and the winding, no air gap is formed between the iron core and the coil winding, an effective heat conduction insulation layer is formed, and the heat conduction insulation structure has the advantages of simple process and cost saving.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to an axial motor stator and a production process thereof.
Background
Compared with the traditional radial magnetic field motor, the number of coil windings in the disc motor is more, the coil windings are distributed more dispersedly, and the production difficulty is higher. The traditional winding and inserting process needs to manually plug a pre-wound coil into the iron core tooth space filled with insulating paper, the process is almost completely carried out manually, the production efficiency is low, and the production requirement of a disc type motor is difficult to meet.
In the existing research direction, the flat copper wire and the open iron core structure are combined and applied, so that the production difficulty of the coil winding of the disc type motor can be greatly reduced. The method specifically comprises the following steps: and manufacturing an iron core with an opening structure, winding a flat copper wire winding corresponding to the iron core structure, and inserting the flat copper wire winding into the opening iron core to obtain the stator structure of the disc motor. In this way, it is still necessary to perform a paper-padding operation between each tooth of the core to secure the insulation strength between the coil and the core. However, the insertion of the insulating paper becomes an important factor to prevent the improvement of the production efficiency, and the insulating paper also reduces the efficiency of transferring heat from the coil winding to the core.
In order to solve the above problems, for example, the invention patent with the publication number of CN209718404U discloses a device for manufacturing a motor core cladding, which is provided with a central column, a positioning column and a positioning slot on a bottom plate, wherein the positioning column and the positioning slot are arranged around the central column; placing a mold core matched with the shape of the motor iron core on the bottom plate, inserting the annular wall into the positioning groove, and connecting the cover plate with the central column to tightly press and fix the mold core on the positioning column; injecting a first liquid material through the through hole on the cover plate until the height of the first liquid material is equal to the height of the mold core, and solidifying the first liquid material filled in the gap between the mold core and the bottom plate by taking the inner wall of the annular wall as a boundary to form a mold; fixing the motor iron core on the bottom plate, fixedly connecting the cover plate with the central column, pressing and fixing the die on the bottom plate by the cover plate, and directly forming a motor iron core coating layer on the motor iron core after injecting a second liquid material into a gap between the die and the motor iron core through the through hole on the cover plate.
The above patent forms the coating on the iron core directly through the mould, though solved the prior art and need cushion the insulating paper in every iron core intertooth space, the inconvenient problem of operation has equally to this technology. Particularly, the contact area of the iron core coating layer and the die is large, the iron core coating layer has viscosity in the manufacturing process, so that the die sinking resistance is large, and the iron core coating layer is easy to be stressed and damaged in the die sinking process. In addition, the manufacture of the iron core coating needs to be carried out together with the iron core, and the idea of reducing the production period by multiple processes in parallel is not met. If the iron core coating is prepared in advance and then covered on the iron core, on one hand, the fit tolerance of the iron core coating and a plurality of contact surfaces of the iron core is difficult to guarantee. The existence of tolerance can lead to having air gap between iron core and the iron core coating, and the heat conduction effect worsens, and this kind of structure has not hard up, the easy broken risk.
Disclosure of Invention
The invention aims to provide an axial motor stator with good heat conduction effect and a production process thereof, aiming at the problems in the prior art.
The purpose of the invention can be realized by the following technical scheme: the utility model provides an axial motor stator, includes casing, iron core, the coil winding that the iron core outside was located to the cover, its characterized in that, iron core and coil winding between be equipped with the iron core cover body, the iron core cover body adopt insulating material to make, casing and iron core between, iron core and the coil winding and the clearance intussuseption between iron core winding and the casing between fill and have the casting glue, the iron core cover body on be equipped with the gluey passageway of crossing that supplies the casting glue to pass through.
The effect of casting glue lies in and is the integral type after filling casing, iron core, the clearance between the iron core cover body and the coil winding, thereby improve the heat conduction insulating nature of stator, and the shock resistance of each components and parts, the iron core cover body has played the effect of keeping apart iron core and coil winding, inject the minimum distance of iron core and coil winding through setting up the iron core cover body, through casting glue with casing, iron core, coil winding pouring an organic whole, guarantee to have sufficient insulation thickness between iron core and the winding when guaranteeing whole casting glue intensity, form effectual heat conduction insulating layer, the casting glue passes in the passageway that crosses on the iron core cover body gets into the clearance of iron core and the iron core cover body, guarantee that the casting glue is not obstructed by the iron core cover body when filling between iron core and coil winding.
In the axial motor stator, the iron core sleeve body is made of a pouring sealant material. Heat conduction and insulation between iron core and the coil winding mainly are realized by the casting glue, set up the iron core cover body to the dielectric strength height, the material that the heat conductivity is good, can further optimize motor performance, the iron core cover body adopts the material that the casting glue is the same to inject moulding solidification in advance to form, reduce the cost of purchasing the iron core cover body material alone on the one hand, on the other hand is because the iron core cover body is the same with the casting glue material, be favorable to the interface fusion of iron core cover body and casting glue behind the colloid embedment, and because the motor temperature is higher when the motor operation, the casting glue is the same with the expansion coefficient of iron core cover body material, can prevent because of the inconsistent hidden danger that leads to the casting glue fracture when the motor appears the difference in temperature repeatedly.
In the axial motor stator, the iron core sleeve body is in a net shape, and the glue passing channel is a mesh on the iron core sleeve body.
In the above axial motor stator, the mesh is rectangular, honeycomb-shaped or circular.
As another scheme, in the axial motor stator, the iron core sleeve body is provided with a plurality of strip-shaped glue passing holes which are arranged transversely or longitudinally, and the glue passing channels are strip-shaped glue passing holes in the iron core sleeve body.
In the above axial motor stator, the minimum size of the glue passage is 2mm-4 mm. In order to ensure the encapsulation efficiency and quality, the minimum gluing size of the gluing channel cannot be too small, if the gluing channel is a mesh, the diameter of the minimum inscribed circle of the mesh is between 2mm and 4mm, if the gluing channel is a parallel strip-shaped gluing hole, the minimum interval of the strip-shaped gluing hole is between 2mm and 4mm, the too small gluing channel is not beneficial to the passing of pouring glue, the time of the whole process is prolonged, the production cost is increased, the too large gluing channel size is not beneficial to the limitation of the minimum distance between the coil winding and the iron core, the local gluing is too close to influence the product quality.
In the axial motor stator, the pouring sealant is filled with ceramic balls, and the diameter of each ceramic ball is larger than 5 mm. For promoting the heat conduction insulating effect of casting glue, reduce the colloid use amount in order to practice thrift the cost, form certain stress dispersion to the casting glue that is the integral type after the casting glue simultaneously, improve colloid toughness, consequently pack ceramic ball in the casting glue, and set ceramic ball external diameter to be greater than 5mm, be in order to guarantee that ceramic ball only fills between casing and iron core, the large tracts of land filling department between casing and the coil winding, prevent that ceramic ball from being absorbed in and cross the gluey passageway and influence the embedment quality.
In the axial motor stator, the inner side of the iron core sleeve body is also provided with an isolation column. More gaps are reserved between the iron core sleeve body and the iron core through the isolation columns for filling glue, the phenomenon that the glue is not filled fully due to the fact that the distance between the iron core and the coil winding is too short and the heat conduction insulation effect is affected is avoided, meanwhile, the glue can be filled between the iron core sleeve body and the iron core, and the situation that the pouring glue cannot be filled in the gap between the iron core sleeve body and the iron core due to too small gap is avoided.
In foretell axial motor stator, the iron core cover body include with the iron core one-to-one the iron core cover body monomer, the iron core cover body monomer between connect formula as an organic whole through the connecting piece. The iron core sleeve bodies which are connected with each other through the plurality of iron core sleeve body monomer combinations are higher in installation efficiency than a split type, and meanwhile, the processing cost can be effectively reduced.
In the above axial motor stator, the coil windings are three groups, and are respectively sleeved on the iron core at intervals to form an upper coil, a middle coil and a lower coil, the iron core sleeve body is sleeved on the iron core, and the upper coil, the middle coil and the lower coil are all sleeved on the iron core sleeve body. The iron core is sleeved with the iron core sleeve body single bodies, and the iron core sleeve bodies are identical in structure and convenient to process.
In foretell axial motor stator, the iron core cover body monomer include the upper portion iron core cover body, the middle part iron core cover body, the lower part iron core cover body, the upper portion iron core cover body, the middle part iron core cover body, the lower part iron core cover body is adjacent in proper order and is connected formula as an organic whole through the connecting piece, and the three highly progressively decreases in proper order, corresponds upper portion coil and iron core respectively and cup joints the position, middle part coil and iron core cup joint the position, lower part coil and iron core cup joint the position.
The heights of the upper iron core sleeve body, the middle iron core sleeve body and the lower iron core sleeve body are set to be gradually decreased, so that the effects of saving materials and reducing cost are achieved.
In the axial motor stator, the pouring sealant is made of epoxy, polyurethane or silica gel.
The invention also aims to provide a production process of the axial motor stator, which comprises the following steps:
s1, sleeving the iron core sleeve body on the iron core, and then sequentially sleeving the coil windings on the iron core sleeve body;
s2, pouring the iron core, the iron core sleeve and the coil winding into a whole by using pouring sealant;
and S3, standing and curing the pouring sealant or heating and curing in vacuum.
In the above production process of the axial motor stator, the step S2 includes adding the ceramic balls into the housing, uniformly distributing the ceramic balls between the housing and the iron core, and between the housing and the coil winding, and then filling the potting adhesive.
Compared with the prior art, the axial motor stator has the advantages that the iron core and the coil winding are isolated by the iron core sleeve body, and the glue passing channel is arranged on the iron core sleeve body, so that the shell, the iron core and the coil winding are cast into a whole when the stator is filled with glue, no air gap is formed between the iron core and the coil winding, and an effective heat conducting insulating layer is formed; the iron core sleeve body is made of the same material as the colloid, so that the interface fusion property is good and the expansion coefficients are the same after the pouring sealant is solidified; more gaps can be reserved between the iron core sleeve body and the iron core by arranging the isolation columns for filling glue, so that the phenomenon that the insulation effect is not good enough due to too short distance between the iron core and the coil winding is avoided; by adding the ceramic balls into the pouring sealant, the heat conduction and insulation performance of the pouring sealant are improved, and the toughness of the pouring sealant after curing is improved; therefore, the axial motor stator has the advantages of good insulating property, simple process and cost saving.
Drawings
FIG. 1 is a schematic perspective view of example 1 of the present invention;
fig. 2 is a schematic view between an iron core and an iron core sleeve in example 2 of the present invention;
FIG. 3 is a schematic perspective view of example 3 of the present invention;
FIG. 4 is a schematic view of a coil winding after assembly according to embodiment 1 of the present invention;
in the figure, 1, iron core; 2. a coil winding; 21. an upper coil; 22. a middle coil; 23. a lower coil; 3. an iron core sleeve body; 31. an iron core sleeve body monomer; 311. an upper iron core sleeve body; 312. a middle iron core sleeve body; 313. a lower iron core sleeve body; 32. a connecting member; 4. a glue passing channel; 5. and (4) isolating the column.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, this axial motor stator, locate the coil winding 2 in the iron core 1 outside including casing, iron core 1, cover, be equipped with the iron core cover body 3 between iron core 1 and the coil winding 2, the iron core cover body 3 adopts insulating material to make, and the clearance intussuseption between casing and the iron core 1, between iron core 1 and the coil winding 2 and between iron core 1 winding and the casing is filled with the casting glue, is equipped with the gluey passageway 4 of crossing that supplies the casting glue to pass through on the iron core cover body 3, the iron core cover body 3 is formed by the preparation of casting glue material, the iron core cover body 3 be netted, cross gluey passageway 4 and be the mesh on the iron core cover body 3, the mesh can be rectangle or honeycomb or circular, in this embodiment, the mesh be the.
The effect of casting glue lies in being the integral type after filling the casing, iron core 1, the clearance between the iron core cover body 3 and the coil winding 2, thereby improve the heat conduction insulating nature of stator, and the shock resistance of each components and parts, iron core cover body 3 has played the effect of keeping apart iron core 1 and coil winding 2, inject the minimum distance of iron core 1 and coil winding 2 through setting up the iron core cover body 3, with the casing through the casting glue, iron core 1, coil winding 2 pours into an organic whole, guarantee to have sufficient insulation thickness between iron core 1 and the winding when guaranteeing whole casting glue intensity, form effectual heat conduction insulating layer, the casting glue passes in the passageway 4 that crosses on the iron core cover body 3 gets into the clearance of iron core 1 and iron core cover body 3, guarantee that the casting glue is not obstructed by the iron core cover body 3 when filling between iron core 1 and coil winding 2. Heat conduction and insulation between iron core 1 and coil winding 2 are mainly realized by the casting glue, set up the iron core cover body 3 to the dielectric strength height, the material that the heat conductivity is good, can further optimize motor performance, iron core cover body 3 adopts the material that the casting glue is the same to be formed by injection moulding solidification in advance, reduce the cost of purchasing the 3 materials of iron core cover body alone on the one hand, on the other hand because iron core cover body 3 is the same with the casting glue material, be favorable to the interface fusion of iron core cover body 3 and casting glue behind the colloid embedment, and because the motor temperature is higher when the motor operation, the casting glue is the same with the expansion coefficient of the 3 materials of iron core cover body, can prevent because of the inconsistent potential hazard that leads to the motor to the casting glue fracture when the difference in temperature appears repeatedly.
In this embodiment, the minimum glue passing size of the glue passing channel 4 is 2mm-4 mm. In order to ensure the encapsulation efficiency and quality, the minimum size of the glue passing channel 4 cannot be too small, in the embodiment, the glue passing channel 4 is a mesh, the diameter of the minimum inscribed circle of the mesh is between 2mm and 4mm, the too small glue passing channel 4 is not beneficial to the passing of the encapsulation glue, the time of the whole process is prolonged, the production cost is increased, the too large size of the glue passing channel 4 is not beneficial to the limitation of the minimum distance between the coil winding 2 and the iron core 1, the local sticking is easy to occur, and the product quality is affected. In addition, in order to improve the heat conduction and insulation effects of the pouring sealant and reduce the usage amount of the colloid so as to save cost, in the embodiment, the pouring sealant is filled with ceramic balls, and the diameter of each ceramic ball is larger than 5 mm. After increasing ceramic ball, the heat conduction insulating effect of casting glue promotes, and the use amount of casting glue reduces, and ceramic ball can also form certain stress dispersion to the casting glue that is the integral type after the casting, improves colloid toughness, and sets ceramic ball external diameter to be greater than 5mm, is the large tracts of land filling department between casing and iron core 1, casing and coil winding 2 in order to guarantee that ceramic ball only fills, prevents that ceramic ball from being absorbed in and cross to influence the embedment quality in gluey passageway 4.
In this embodiment, the iron core sleeve body 3 includes the iron core sleeve body single bodies 31 corresponding to the iron cores 1 one by one, and the iron core sleeve body single bodies 31 are connected to each other through the connecting member 32. The cross section of the iron core sleeve body 31 is in the same ring shape as the iron core 1, the side wall of the iron core sleeve body 31 is provided with the meshes, the height of the iron core sleeve body 31 is higher than that of the coil winding 2, the iron core sleeve body 3 is connected with the iron core sleeve body 3 in an integrated mode through the combination of the iron core sleeve body 31, the installation efficiency is higher than that of a split type, and the processing cost can be effectively reduced. The pouring sealant is made of epoxy, polyurethane or silica gel, the iron core sleeve body 3 is made of the same material as the pouring sealant, and the ceramic ball is made of one or more of high-heat-conductivity and high-insulation aluminum oxide, aluminum nitride and diamond.
Example 2
As shown in fig. 2, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and the difference is that the inner side of the iron core sleeve 3 is further provided with an isolation column, and more gaps are left between the iron core sleeve 3 and the iron core 1 by the isolation column for filling with glue, so that insufficient glue filling caused by too short distance between the iron core 1 and the coil winding 2 is prevented, the heat conduction insulation effect is affected, and meanwhile, glue can be filled between the iron core sleeve 3 and the iron core 1, so that too small gap between the iron core sleeve 3 and the iron core 1 cannot be filled with pouring glue.
In addition, in this embodiment, cross gluey passageway 4 and cross gluey hole for setting up in the parallel bar in the iron core cover body 3 outside, the minimum interval that the gluey hole was crossed to the bar is between 2mm-4mm, and too little cross gluey passageway 4 is unfavorable for the passing through of casting glue, has prolonged the time of whole technology, has increased manufacturing cost, and too big cross gluey passageway 4 size is unfavorable for coil winding 2 and the restriction of iron core 1 minimum distance, appears partially easily and pastes too closely, influences product quality.
Example 3
As shown in fig. 3 and 4, the structure and principle of the present embodiment are substantially the same as those of embodiment 1, and the difference is that the coil windings 2 are three groups of coil windings 2 with different heights, which are respectively sleeved on the iron core 1 at intervals to form an upper coil 21, a middle coil 22, and a lower coil 23, the iron core sleeve body 31 is sleeved on the iron core 1, and the upper coil 21, the middle coil 22, and the lower coil 23 are all sleeved on the iron core sleeve body 31. The single body 31 of the iron core sleeve comprises an upper iron core sleeve body 311, a middle iron core sleeve body 312 and a lower iron core sleeve body 313, wherein the upper iron core sleeve body 311, the middle iron core sleeve body 312 and the lower iron core sleeve body 313 are sequentially adjacent and connected into a whole through a connecting piece 32, the heights of the upper iron core sleeve body, the middle iron core sleeve body 312 and the lower iron core sleeve body 313 are gradually decreased, the upper iron core sleeve body 311, the middle iron core sleeve body 312 and the lower iron core sleeve body 313 correspond to the sleeving position of the upper coil 21 and the iron core 1, the sleeving position of the middle. The heights of the upper iron core sleeve body 311, the middle iron core sleeve body 312 and the lower iron core sleeve body 313 are set to be gradually reduced, so that the effects of saving materials and reducing cost are achieved.
The production process of the axial motor stator in the embodiments 1 to 3 includes the following steps:
s1, sleeving the iron core sleeve body 3 on the iron core 1, sequentially sleeving the coil winding 2 on the iron core sleeve body 3, and placing the sleeved iron core 1 and the sleeved coil winding 2 into a shell of the motor stator;
s2, adding ceramic balls into the shell to enable the ceramic balls to be uniformly distributed between the shell and the iron core 1 and between the shell and the coil winding 2, then filling pouring sealant, and waiting for the pouring sealant to permeate into gaps between the shell and the iron core 1, between the iron core 1 and the winding coil, between the shell and the winding coil and between the iron core 1 and the iron core sleeve body 3;
and S3, standing or heating the shell subjected to glue pouring in vacuum to solidify the pouring glue.
For a single-rotor motor stator, because the shell is in an annular opening shape, a coil for accommodating the iron core 1 and the winding is formed in the shell, the pouring sealant can be directly filled into the shell, and for a double-rotor motor, because two sides of the shell of the stator are communicated, when the pouring sealant is filled, one side of the shell needs to be sealed by a cover plate to form a cavity for filling the pouring sealant, and the cover plate is removed after the pouring sealant is completely cured.
According to the axial motor stator, the iron core 1 and the coil winding 2 are isolated by arranging the iron core sleeve body 3, and the glue passing channel 4 is arranged on the iron core sleeve body 3, so that the shell, the iron core 1 and the coil winding 2 are cast into a whole when the stator is filled with glue, no air gap is formed between the iron core 1 and the coil winding 2, and an effective heat conducting insulating layer is formed; the iron core sleeve body 3 is made of the same material as the colloid, so that the interface fusion property is good and the expansion coefficients are the same after the pouring sealant is solidified; more gaps can be reserved between the iron core sleeve body 3 and the iron core 1 by arranging the isolation columns for filling glue, so that the phenomenon that the insulation effect is not good enough due to too short distance between the iron core 1 and the coil winding 2 is prevented; by adding the ceramic balls into the pouring sealant, the heat conduction and insulation performance of the pouring sealant are improved, and the toughness of the pouring sealant after curing is improved; therefore, the axial motor stator has the advantages of good insulating property, simple process and cost saving.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The utility model provides an axial motor stator, locates coil winding (2) in the iron core (1) outside including casing, iron core (1), cover, its characterized in that, iron core (1) and coil winding (2) between be equipped with the iron core cover body (3), the iron core cover body (3) adopt insulating material to make, casing and iron core (1) between, between iron core (1) and coil winding (2) and iron core (1) winding and casing between the clearance intussuseption be filled with the casting glue, the iron core cover body (3) on be equipped with the gluey passageway (4) of crossing that supply the casting glue to pass through, the iron core cover body (3) be netted, cross gluey passageway (4) and be the mesh on the iron core cover body (3), coil winding (2) be three groups, respectively the interval cover locate and form upper portion coil (21), middle part coil (22) on iron core (1), Lower part coil (23), the iron core cover body (3) include the iron core cover body monomer (31) with iron core (1) one-to-one, iron core cover body monomer (31) cover locate on iron core (1), upper portion coil (21), middle part coil (22) and lower part coil (23) all overlap locate on iron core cover body monomer (31), iron core cover body monomer (31) including the upper portion iron core cover body (311), the middle part iron core cover body (312), the lower part iron core cover body (313), the upper portion iron core cover body (311), the middle part iron core cover body (312), the lower part iron core cover body (313) adjacent in proper order and connect as an organic whole through connecting piece (32), and the three highly progressively diminishes in proper order, the upper portion iron core cover body (311), the middle part iron core cover body (312), the lower part iron core cover body (313) correspond upper portion coil (21) respectively and iron core (1), The middle coil (22) is sleeved with the iron core (1), and the lower coil (23) is sleeved with the iron core (1).
2. The axial motor stator according to claim 1, wherein: the iron core sleeve body (3) is made of pouring sealant materials.
3. The axial motor stator according to claim 2, wherein: the iron core cover body (3) on be equipped with the bar of a plurality of horizontal or longitudinal arrangement and cross the rubber hole, cross gluey passageway (4) for the bar on the iron core cover body (3) cross the rubber hole.
4. An axial motor stator according to any one of claims 1-3, wherein: the minimum glue passing size of the glue passing channel (4) is 2mm-4 mm.
5. The axial motor stator according to claim 4, wherein: ceramic balls are filled in the pouring sealant, and the diameter of each ceramic ball is larger than 5 mm.
6. An axial motor stator according to any one of claims 1-3, wherein: and the inner side of the iron core sleeve body (3) is also provided with an isolation column (5).
7. An axial motor using the stator of the axial motor according to any one of claims 1 to 3.
8. A process for producing a stator for an axial electric machine according to claim 1, comprising the steps of:
s1, sleeving the iron core sleeve body (3) on the iron core (1), and sequentially sleeving the coil winding (2) on the iron core sleeve body (3);
s2, pouring the iron core (1), the iron core sleeve body (3) and the coil winding (2) into a whole by using pouring sealant;
and S3, standing and curing the pouring sealant or heating and curing in vacuum.
9. The production process of the axial motor stator according to claim 8, wherein: the step S2 includes adding the ceramic balls into the housing, uniformly distributing the ceramic balls between the housing and the iron core (1), and between the housing and the coil winding (2), and then filling the potting adhesive.
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| CN202010774797.6A CN112039230B (en) | 2020-05-29 | 2020-05-29 | Axial motor stator and production process thereof |
| CN202010477274.5A CN111384792B (en) | 2020-05-29 | 2020-05-29 | Axial motor stator and production process thereof |
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| CN202010477274.5A CN111384792B (en) | 2020-05-29 | 2020-05-29 | Axial motor stator and production process thereof |
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| CN113572322B (en) * | 2021-08-09 | 2022-04-15 | 浙江盘毂动力科技有限公司 | Assembling method of disc type motor |
| CN114039433B (en) * | 2021-10-18 | 2023-05-30 | 智新科技股份有限公司 | Shell stator assembly of flat wire motor and assembly method thereof |
| DE102021215040A1 (en) | 2021-12-27 | 2023-06-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Stator, axial flow machine and pump |
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| CN111384792A (en) | 2020-07-07 |
| CN112039230A (en) | 2020-12-04 |
| CN112039230B (en) | 2022-09-13 |
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Denomination of invention: An axial motor stator and its production process Effective date of registration: 20231214 Granted publication date: 20200828 Pledgee: China Minsheng Bank Limited Jinhua Branch Pledgor: Zhejiang Panhu Power Technology Co.,Ltd. Registration number: Y2023980071207 |