CN117811245A - Stator core structure of high-voltage motor - Google Patents
Stator core structure of high-voltage motor Download PDFInfo
- Publication number
- CN117811245A CN117811245A CN202410011462.7A CN202410011462A CN117811245A CN 117811245 A CN117811245 A CN 117811245A CN 202410011462 A CN202410011462 A CN 202410011462A CN 117811245 A CN117811245 A CN 117811245A
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- CN
- China
- Prior art keywords
- stator core
- insulating plate
- plate punching
- punching sheet
- insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004080 punching Methods 0.000 claims abstract description 108
- 238000009413 insulation Methods 0.000 claims description 28
- 239000000853 adhesive Substances 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 12
- 239000004593 Epoxy Substances 0.000 claims description 12
- 239000004917 carbon fiber Substances 0.000 claims description 12
- 239000003365 glass fiber Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 239000011810 insulating material Substances 0.000 claims description 10
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 9
- 239000003063 flame retardant Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 239000003522 acrylic cement Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011162 core material Substances 0.000 description 78
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention belongs to the technical field of high-voltage motor production, and particularly relates to a stator core structure of a high-voltage motor. The stator core of the high-voltage motor provided by the invention is reasonable in structural design, comprises the stator core unit modules stacked with each other and the long rod bolts for connecting the stator core unit modules into a whole, wherein the stator core unit modules are composed of stator core punching blocks, first insulating plate punching sheets and second insulating plate punching sheets, and when the stator core unit modules are stacked with each other, the first insulating plate punching sheets and the second insulating plate punching sheets are clamped with each other, so that the stator core unit modules can be quickly positioned and assembled, the assembled stator core has a good insulating effect, and the safe operation of the core and the coil can be ensured.
Description
Technical Field
The invention belongs to the technical field of high-voltage motor production, and particularly relates to a stator core structure of a high-voltage motor.
Background
The main manufacturing material of the stator core of the high-voltage motor is silicon steel sheet. The silicon steel sheet is a material with low hysteresis and low iron loss, and can effectively reduce the energy loss of the iron core and the magnetic leakage of the magnetic field. In addition, the silicon steel sheet also has higher resistivity and lower eddy current loss, and can reduce the heat generation and the power consumption of the stator coil. The insulation treatment of the stator core of the high-voltage motor is very important, and the safe operation of the core and the coil can be ensured. Common insulation treatment methods include coating of insulating paint, coating of insulating material, and the like. The method can effectively prevent the influence of turn-to-turn short circuit and external electric field, and improve the reliability and safety of the motor. The useful life of a high voltage motor stator core depends on a number of factors including the manufacturing materials, process, electromagnetic properties, mechanical properties, insulation treatments, and the like. Generally, the iron core with excellent quality has longer service life, and can ensure the stable operation of the motor. At the same time, correct use and maintenance are also important factors for ensuring the service life of the iron core.
The stator core structure of the existing high-voltage motor has the defects when in use, firstly, for a longer high-voltage motor, the length of the used stator core is longer, and the stator core is difficult to laminate into a whole by the current lamination process, so that the stator core is generally designed in a segmented way. Because each section of the traditional sectional motor stator core adopts a rivet fastening mode, gaps exist between two adjacent sections of stator cores, the gap length is not an effective electromagnetic action length, and finally, the stator core material is increased, the motor power density is reduced, and the motor performance is influenced; secondly, the insulating property is not ideal enough, and the insulating paint layer is easy to damage. Therefore, there is a need for an improved and optimized structure.
Disclosure of Invention
The present invention has been made to overcome at least one of the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a stator core structure of a high voltage motor.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
the invention provides a stator core structure of a high-voltage motor, which comprises stator core unit modules stacked with each other and long rod bolts for connecting the stator core unit modules into a whole; the stator core unit module is composed of a stator core punching block, a first insulating plate punching sheet and a second insulating plate punching sheet, wherein the first insulating plate punching sheet and the second insulating plate punching sheet are respectively arranged on two sides of the stator core punching block.
Further, in the high-voltage motor stator core structure, the stator core punching block comprises a stator core punching block body, a plurality of stator grooves are formed in the edge of an inner hole of the stator core punching block body along the circumferential direction, and a plurality of first bolt perforations are formed in the edge of the stator core punching block body, which is close to the outer edge, along the circumferential direction.
Further, in the high-voltage motor stator core structure, the first insulation plate punching sheet comprises a first insulation plate punching sheet body, a plurality of first stator avoidance grooves are formed in the edge of an inner hole of the first insulation plate punching sheet body along the circumferential direction, a plurality of second bolt perforations are formed in the position, close to the outer edge, of the first insulation plate punching sheet body along the circumferential direction, and radial protrusions are arranged between every two adjacent first stator avoidance grooves in the outer side of the first insulation plate punching sheet body.
Further, in the high-voltage motor stator core structure, the second insulating plate punching sheet comprises a second insulating plate punching sheet body, a plurality of second stator avoidance grooves are formed in the edge of an inner hole of the second insulating plate punching sheet body along the circumferential direction, a plurality of third bolt perforation holes are formed in the position, close to the outer edge, of the second insulating plate punching sheet body along the circumferential direction, and a radial clamping groove is formed between every two adjacent first stator avoidance grooves in the outer side of the first insulating plate punching sheet body.
Further, in the high-voltage motor stator core structure, two sides of the stator core punching block are adhered and fixed with the first insulating plate punching sheet and the second insulating plate punching sheet through insulating adhesives, and the insulating adhesives are one of epoxy resin adhesive, polyester adhesive and acrylic acid adhesive.
Further, in the stator core structure of the high-voltage motor, the stator core punching block is made of a material with the thickness of 14-20 mm, the core loss P1.7 is less than or equal to 0.80W/Kg, and the magnetostriction coefficient lambda is less than or equal to 6 multiplied by 10 -6 The magnetic flux density B8 is more than or equal to 1.88T.
Further, in the high-voltage motor stator core structure, the first insulating plate punching sheet and the second insulating plate punching sheet are insulating plates with the same material, and the thickness of each insulating plate is 2-4mm; the insulation board main part comprises flame retardant coating, heat conduction layer, silica layer, glass fiber layer, carbon fiber layer, epoxy layer and insulating material basic unit in proper order, insulating material basic unit upper surface is provided with the epoxy layer, epoxy layer upper surface is provided with the carbon fiber layer, carbon fiber layer upper surface is provided with the glass fiber layer, glass fiber layer upper surface is provided with the silica layer, silica layer upper surface is provided with the heat conduction layer, the heat conduction layer upper surface is provided with flame retardant coating, flame retardant coating upper surface is provided with antistatic backing, insulating material basic unit lower surface is provided with the wearing layer, the material thickness ratio between glass fiber layer, carbon fiber layer and the epoxy layer is 1:1-3.
Further, in the high-voltage motor stator core structure, the assembly method comprises the following steps:
1) Respectively preparing a stator core punching block, a first insulating plate punching sheet and a second insulating plate punching sheet by punching;
2) Coating insulating adhesives on two sides of a stator core punching block, and respectively and fixedly mounting a first insulating plate punching sheet and a second insulating plate punching sheet in an adhesive mode to form a stator core unit module;
3) Stacking the stator core unit modules, wherein the radial clamping grooves of the upper stator core unit modules and the radial protrusions of the lower stator core unit modules are mutually clamped during stacking;
4) And connecting the stacked stator core unit modules into a whole by using long rod bolts.
The beneficial effects of the invention are as follows:
the stator core of the high-voltage motor provided by the invention is reasonable in structural design, comprises the stator core unit modules stacked with each other and the long rod bolts for connecting the stator core unit modules into a whole, wherein the stator core unit modules are composed of stator core punching blocks, first insulating plate punching sheets and second insulating plate punching sheets, and when the stator core unit modules are stacked with each other, the first insulating plate punching sheets and the second insulating plate punching sheets are clamped with each other, so that the stator core unit modules can be quickly positioned and assembled, the assembled stator core has a good insulating effect, and the safe operation of the core and the coil can be ensured.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the whole structure of the present invention;
FIG. 2 is a schematic top view of the entire structure of the present invention;
fig. 3 is a schematic structural view of a stator core unit module according to the present invention;
fig. 4 is a schematic exploded view of a stator core unit module according to the present invention;
fig. 5 is a schematic perspective view of a stator core block according to the present invention;
FIG. 6 is a schematic top view of a stator core block according to the present invention;
FIG. 7 is a schematic perspective view of a first insulation plate of the present invention;
FIG. 8 is a schematic top view of a first insulation plate of the present invention;
FIG. 9 is a schematic perspective view of a second insulating plate of the present invention;
FIG. 10 is a schematic top view of a second insulation plate of the present invention;
in the drawings, the list of components represented by the various numbers is as follows:
1-stator core unit module, 11-stator core punching block, 111-stator core punching block body, 112-stator slot, 113-first bolt perforation, 12-first insulation plate punching sheet, 121-first insulation plate punching sheet body, 122-first stator avoidance slot, 123-second bolt perforation, 124-radial bulge, 13-second insulation plate punching sheet, 131-second insulation plate punching sheet body, 132-second stator avoidance slot, 133-third bolt perforation, 134-radial clamping slot, 2-long rod bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 10, the present embodiment provides a stator core structure of a high-voltage motor, including stator core unit modules 1 stacked one on another and long rod bolts 2 for connecting the respective stator core unit modules 1 as one body. The stator core unit module 1 is composed of a stator core punching block 11, a first insulating plate punching sheet 12 and a second insulating plate punching sheet 13, and the first insulating plate punching sheet 12 and the second insulating plate punching sheet 13 are respectively installed on two sides of the stator core punching block 11.
In this embodiment, the stator core punching block 11 includes a stator core punching block body 111, a plurality of stator slots 112 are circumferentially formed at edges of an inner hole of the stator core punching block body 111, and a plurality of first bolt holes 113 are circumferentially formed at edges of the stator core punching block body 111 close to an outer edge.
In this embodiment, the first insulation board punching sheet 12 includes a first insulation board punching sheet body 121, a plurality of first stator avoidance grooves 122 are formed along the circumferential direction at the edge of the inner hole of the first insulation board punching sheet body 121, a plurality of second bolt perforation holes 123 are formed along the circumferential direction at the position, close to the outer edge, of the first insulation board punching sheet body 121, and radial protrusions 124 are arranged between two adjacent first stator avoidance grooves 122 at the outer side of the first insulation board punching sheet body 121.
In this embodiment, the second insulating plate punching sheet 13 includes a second insulating plate punching sheet body 131, a plurality of second stator avoidance grooves 132 are formed along the circumferential direction at the edge of the inner hole of the second insulating plate punching sheet body 131, a plurality of third bolt through holes 133 are formed along the circumferential direction at the position, close to the outer edge, of the second insulating plate punching sheet body 131, and a radial clamping groove 134 is formed between two adjacent first stator avoidance grooves 132, located at the outer side of the first insulating plate punching sheet body 131.
In this embodiment, two sides of the stator core punching block 11 are adhered and fixed with the first insulating plate punching sheet 12 and the second insulating plate punching sheet 13 through insulating adhesive, and the insulating adhesive is one of epoxy resin adhesive, polyester adhesive and acrylic adhesive.
In the embodiment, the stator core punching block 11 is made of a material with the thickness of 14-20 mm, the core loss P1.7 is less than or equal to 0.80W/Kg, and the magnetostriction coefficient lambda is less than or equal to 6 multiplied by 10 -6 The magnetic flux density B8 is more than or equal to 1.88T.
In the embodiment, the first insulating plate punching sheet 12 and the second insulating plate 13 are insulating plates made of the same material, and the thickness of each insulating plate is 2-4mm; the insulation board main part comprises flame retardant coating, heat conduction layer, silica layer, glass fiber layer, carbon fiber layer, epoxy layer and insulating material basic unit in proper order, insulating material basic unit upper surface is provided with the epoxy layer, epoxy layer upper surface is provided with the carbon fiber layer, carbon fiber layer upper surface is provided with the glass fiber layer, glass fiber layer upper surface is provided with the silica layer, silica layer upper surface is provided with the heat conduction layer, heat conduction layer upper surface is provided with flame retardant coating, flame retardant coating upper surface is provided with antistatic backing, insulating material basic unit lower surface is provided with the wearing layer, the material thickness proportion between glass fiber layer, carbon fiber layer and the epoxy layer is 1:1:1-3.
In this embodiment, the method for assembling the stator core structure of the high-voltage motor includes the following steps:
1) Respectively preparing a stator core punching block 11, a first insulating plate punching sheet 12 and a second insulating plate punching sheet 13 by punching;
2) Insulating adhesives are coated on two sides of the stator core punching block 11, and a first insulating plate punching sheet 12 and a second insulating plate punching sheet 13 are respectively and fixedly installed in an adhesive mode to form a stator core unit module 1;
3) Stacking the stator core unit modules 1, wherein the radial clamping grooves 134 of the upper stator core unit module 1 and the radial protrusions 124 of the lower stator core unit module 2 are mutually clamped during stacking;
4) The stacked stator core unit modules 1 are connected into a whole by long-rod bolts 2.
The preferred embodiments of the invention disclosed above are merely helpful in explaining the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. The stator core structure of the high-voltage motor is characterized by comprising stator core unit modules stacked with each other and long rod bolts for connecting the stator core unit modules into a whole; the stator core unit module is composed of a stator core punching block, a first insulating plate punching sheet and a second insulating plate punching sheet, wherein the first insulating plate punching sheet and the second insulating plate punching sheet are respectively arranged on two sides of the stator core punching block.
2. The stator core structure of claim 1, wherein the stator core block comprises a stator core block body, a plurality of stator slots are circumferentially formed at edges of an inner hole of the stator core block body, and a plurality of first bolt perforations are circumferentially formed at the edges of the stator core block body close to the outer edge.
3. The stator core structure of a high-voltage motor according to claim 2, wherein the first insulation plate punching sheet comprises a first insulation plate punching sheet body, a plurality of first stator avoiding grooves are formed in the edge of an inner hole of the first insulation plate punching sheet body along the circumferential direction, a plurality of second bolt perforations are formed in the position, close to the outer edge, of the first insulation plate punching sheet body along the circumferential direction, and radial protrusions are arranged between two adjacent first stator avoiding grooves on the outer side of the first insulation plate punching sheet body.
4. The stator core structure of claim 3, wherein the second insulating plate punching sheet comprises a second insulating plate punching sheet body, a plurality of second stator avoidance grooves are formed in the edge of an inner hole of the second insulating plate punching sheet body along the circumferential direction, a plurality of third bolt perforation holes are formed in the position, close to the outer edge, of the second insulating plate punching sheet body along the circumferential direction, and a radial clamping groove is formed between two adjacent first stator avoidance grooves in the outer side of the first insulating plate punching sheet body.
5. The stator core structure of claim 4, wherein two sides of the stator core punching block are adhered and fixed with the first insulating plate punching sheet and the second insulating plate punching sheet through insulating adhesive, and the insulating adhesive is one of epoxy resin adhesive, polyester adhesive and acrylic adhesive.
6. The stator core structure of the high-voltage motor according to claim 5, wherein the stator core punching block is made of a material with the thickness of 14-20 mm, the core loss P1.7 is less than or equal to 0.80W/Kg, and the magnetostriction coefficient lambda is less than or equal to 6 multiplied by 10 -6 The magnetic flux density B8 is more than or equal to 1.88T.
7. The stator core structure of the high-voltage motor according to claim 6, wherein the first insulating plate punched sheet and the second insulating plate punched sheet are insulating plates with the same material, and the thickness of the insulating plates is 2-4mm; the insulation board main part comprises flame retardant coating, heat conduction layer, silica layer, glass fiber layer, carbon fiber layer, epoxy layer and insulating material basic unit in proper order, insulating material basic unit upper surface is provided with the epoxy layer, epoxy layer upper surface is provided with the carbon fiber layer, carbon fiber layer upper surface is provided with the glass fiber layer, glass fiber layer upper surface is provided with the silica layer, silica layer upper surface is provided with the heat conduction layer, the heat conduction layer upper surface is provided with flame retardant coating, flame retardant coating upper surface is provided with antistatic backing, insulating material basic unit lower surface is provided with the wearing layer, the material thickness ratio between glass fiber layer, carbon fiber layer and the epoxy layer is 1:1-3.
8. The stator core structure of a high voltage motor as claimed in claim 7, wherein the assembling method thereof comprises the steps of:
1) Respectively preparing a stator core punching block, a first insulating plate punching sheet and a second insulating plate punching sheet by punching;
2) Coating insulating adhesives on two sides of a stator core punching block, and respectively and fixedly mounting a first insulating plate punching sheet and a second insulating plate punching sheet in an adhesive mode to form a stator core unit module;
3) Stacking the stator core unit modules, wherein the radial clamping grooves of the upper stator core unit modules and the radial protrusions of the lower stator core unit modules are mutually clamped during stacking;
4) And connecting the stacked stator core unit modules into a whole by using long rod bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410011462.7A CN117811245A (en) | 2024-01-04 | 2024-01-04 | Stator core structure of high-voltage motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410011462.7A CN117811245A (en) | 2024-01-04 | 2024-01-04 | Stator core structure of high-voltage motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117811245A true CN117811245A (en) | 2024-04-02 |
Family
ID=90424973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410011462.7A Pending CN117811245A (en) | 2024-01-04 | 2024-01-04 | Stator core structure of high-voltage motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117811245A (en) |
-
2024
- 2024-01-04 CN CN202410011462.7A patent/CN117811245A/en active Pending
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