CN109327096B - Slot insulation method of flat wire motor stator - Google Patents
Slot insulation method of flat wire motor stator Download PDFInfo
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- CN109327096B CN109327096B CN201811009964.7A CN201811009964A CN109327096B CN 109327096 B CN109327096 B CN 109327096B CN 201811009964 A CN201811009964 A CN 201811009964A CN 109327096 B CN109327096 B CN 109327096B
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- 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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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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- 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
- H02K15/10—Applying solid insulation to windings, stators or rotors
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Chemical Kinetics & Catalysis (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
The invention provides a slot insulation method of a flat wire motor stator, which comprises the flat wire motor stator, wherein a stator slot is arranged in the flat wire motor stator, and the slot insulation method is characterized in that an insulation pipe is arranged in the stator slot, and the insulation pipe is an integrally formed insulation pipe; the insulating tubes are symmetrically inserted into the stator wire slots. The invention realizes slot insulation by inserting the insulating tube into the stator slot of the flat wire motor stator, and has high production efficiency, stable product quality and good insulating property.
Description
Technical Field
The invention belongs to the technical field of electric automobile driving motors, and particularly relates to a slot insulation method for a flat wire motor stator.
Background
The driving motor (including permanent-magnet brushless DC motor and AC induction motor) of electric automobile is a new type of integrated motor which appears along with the development of semiconductor electronic technology, it is the product of combining the present electronic technology, control theory and motor technology, it has the advantages of high efficiency, long service life and no need of maintenance, and is especially suitable for being used as the engine of electric automobile.
The existing driving motor for the electric automobile comprises a stator and a stator, wherein the stator comprises an annular iron core, a wire slot is formed in the inner wall of the iron core, and an enameled wire is wound in the wire slot and serves as a winding. However, the magnetic field intensity generated by the winding is low, and the electric automobile cannot be provided with enough power. And the increase of the number of windings increases the weight and the volume of the motor, so that the endurance capacity of the electric automobile is reduced. The existing metal strip which can generate a magnetic field after being electrified is arranged in the wire slot and is used as a winding, so that a stronger magnetic field can be generated to provide enough power for the electric automobile, and the endurance mileage can be effectively prolonged. In order to realize the insulation effect, the metal strip and the wire groove need to be subjected to insulation treatment. In the prior art, after a metal strip is wrapped by an insulating material, the metal strip is inserted into a wire slot. By adopting the prior art, the action of wrapping the metal strip is complex, the labor is consumed, and the improvement of the production efficiency is limited. Meanwhile, the insulating material is arranged outside the metal strip in a traditional wrapping mode, and the insulating material is difficult to be tightly combined with the metal strip and is easy to loosen. Especially, in order to fix the metal strip, the width of the wire slot is close to that of the metal strip, the gap between the wire slot and the metal strip is small, the insulating layer is easy to damage and wrinkle due to the action of inserting the insulating material into the wire slot after wrapping the metal strip, the insulating effect is influenced, and the popularization and the application of the motor are limited.
Disclosure of Invention
In view of the above, the present invention provides a slot insulation method for a flat-wire motor stator, in which slot insulation is achieved by inserting an insulation tube into a stator slot of the flat-wire motor stator, so that production efficiency is high, product quality is stable, and insulation performance is good.
The technical scheme of the invention is as follows: the slot insulation method of the flat wire motor stator comprises the flat wire motor stator, and a stator slot is arranged in the flat wire motor stator, and is characterized in that an insulation pipe is arranged in the stator slot, and the insulation pipe is an integrally formed insulation pipe; the insulating tubes are symmetrically inserted into the stator wire slots.
Further, the insulating tube comprises one or more insulating layers and one or more wear-resistant layers, and the cross section of the insulating tube is rectangular, racetrack-shaped, oval or circular; the wear-resistant layer is arranged on the inner surface and/or the outer surface of the insulating tube.
Further, the insulating layer comprises a polyimide layer, a polyethylene layer, a polyaramide layer, a silicon dioxide layer and a polypropylene layer which are sequentially arranged, and the thickness ratio of the polyimide layer to the polyethylene layer to the polyaramide layer to the silicon dioxide layer to the polypropylene layer is 2:1:2:1: 1.
In the invention, the polyimide layer is a polymer synthesized by taking tetracarboxylic dianhydride and aromatic diamine monomer as raw materials and carrying out amidation and imidization. The polyimide film has a dielectric constant of 3.0-3.2 and a dielectric loss tangent of 10 in the temperature range from room temperature to liquid helium temperature-4～10-3Resistivity at liquid nitrogen temperature of 2.0X 1017Omega cm, breakdown field intensity higher than 150kV/mm]. Meanwhile, the polyimide also has better corona resistance and tensile strength. However, the dielectric constant of polyimide is relatively high, and the dielectric constant can be reduced to various degrees by introducing fluorine atoms, aliphatic structural units, and siloxane groups.
The silicon dioxide layer is arranged to facilitate local charge transfer, so that corona breakdown caused by charge accumulation is avoided.
The polyethylene layer is a crosslinked polyethylene layer obtained by irradiating polyethylene with high-energy rays or adding a crosslinking agent. Compared with polyethylene, the aging resistance and the environmental stress cracking resistance of the crosslinked polyethylene are better, and the brittle temperature is lower than that of polyethylene (crosslinked polyethylene: 76 ℃ below zero, polyethylene: 70 ℃ below zero). The dielectric constant and dielectric loss tangent of crosslinked polyethylene are close to those of polyethylene, and the insulation resistance is large. The crosslinked polyethylene has a resistivity higher than 10 at room temperature16Omega cm, a dielectric constant of 2.3, and a dielectric loss tangent of 5.0X 10-4。
The aromatic polyamide layer is prepared by taking polyisophthaloyl metaphenylene diamine short fibers and pulp fibers as raw materials through wet papermaking, drying and hot rolling. Nomex has a dielectric constant of 3.1 at liquid nitrogen temperature and a dielectric loss tangent of 1.0X 10-3The breakdown field strength is 35 kV/mm.
The polypropylene layer is an insulating material formed by pressing porous pulp material and polypropylene film as raw materials. The resistivity of PPLP was 2.9X 10 at liquid nitrogen temperature16Omega cm, dielectric constant of 2.21, dielectric loss tangent of 1.010-4The breakdown field strength was 103.78 kV/mm. In addition, the polypropylene layer has good mechanical property and insulating property at low temperature, and is a kind of insulating material suitable for cold insulation superconducting cables.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 23-38 parts of polyvinyl alcohol, 6-13 parts of nano silicon dioxide, 15-27 parts of polyvinylpyrrolidone and 38-56 parts of epoxy silsesquioxane acrylic resin.
The adhesive disclosed by the invention can effectively improve the matching stability of the adhesive and each layer of material through the synergistic effect of polyvinyl alcohol, polyvinylpyrrolidone and epoxy silsesquioxane acrylic resin, and can improve the properties of surface heat resistance, oxidation resistance, hardness and the like of each layer of material, so that the internal stability of the insulating layer is greatly improved, and the effect of 100% insulation can be achieved.
Further, the insulating tube is any one of a spiral winding insulating tube, an extrusion molding insulating tube, an injection molding insulating tube and a blow molding insulating tube.
Furthermore, the section of the insulating tube is in a shape of a right-angle rectangle, an arc-angle rectangle or a runway.
Further, the insulating tube is formed by compounding side-by-side strips through spiral winding along an axis, a first overlapping area and a second overlapping area are arranged on the edges of the strips along the direction of the strips, and the first overlapping area and the second overlapping area between the adjacent strips are overlapped.
Further, the spiral winding means that the strip material is spirally wound along an axis, and the first overlapping area is arranged in front of the second overlapping area.
Furthermore, the wear-resistant layers are two layers and are respectively arranged on the outer surface and the inner surface of the insulating tube, and the insulating layer is arranged between the two wear-resistant layers.
Further, the method for symmetrically inserting the insulating tube into the stator wire slot comprises the following steps:
s1, selecting a formed insulating pipe sleeve matched with the size of a stator wire slot of a flat wire motor, and cutting and preprocessing the length of the insulating pipe sleeve according to the size of a stator;
s2, placing a flat wire motor stator to be inserted into a pipe into a positioning sleeve plate for fixing;
s3, putting the preprocessed insulating pipe sleeve into a feeding mechanism, and conveying the insulating pipe sleeve to a rear positioning mechanism through a conveying mechanism;
s4, sleeving and clamping the insulating pipe of the positioning mechanism to the upper end plane of the stator wire slot of the flat wire motor through the material clamping mechanism;
s5, moving the guide mechanism to the upper part of the flat wire motor stator of the positioning sleeve plate; steps S4 and S5 are synchronously performed;
s6, the material clamping mechanism sends the insulation sleeve into a stator wire slot of the flat wire motor through a guide mechanism;
s7, all the insulation sleeves are plugged into the stator wire slots of the flat wire motor through a leveling mechanism;
s8, taking out the processed flat wire motor stator, putting in a new flat wire motor stator, resetting each mechanism, and repeating the steps S1-S7.
According to the invention, slot insulation is achieved by originally inserting the insulating tube into the stator slot of the flat-wire motor stator directly, so that the size consistency of the inserted insulating tube can be ensured, and meanwhile, the formed insulating tube has no gap and better insulating property. According to the invention, the machining efficiency is greatly improved by mechanically inserting the finished sleeve into the stator slots of the flat wire motor in batches, the slot fullness rate of the flat wire motor stator can be further ensured, and the flexibility of the size design of the winding wire is guaranteed.
According to the invention, slot insulation is realized by inserting the insulating tube into the stator slot of the flat wire motor stator, the production efficiency is high, the product quality is stable, meanwhile, the metal strip is inserted into the insulating tube, the conduction of the stator can be realized, the action of inserting the metal strip is simple, and the mechanical automation can be selected for completion.
Drawings
FIG. 1 is a schematic view of the structure of the insulating tube of the present invention;
FIG. 2 is a schematic structural view of the stator of the present invention;
FIG. 3 is an enlarged fragmentary view of the stator of the present invention;
FIG. 4 is a schematic structural view of the stator of the present invention;
FIG. 5 is a schematic structural diagram of another embodiment of the present invention;
FIG. 6 is a schematic structural view of embodiment 5 of the present invention;
FIG. 7 is a schematic structural view of embodiment 6 of the present invention;
FIG. 8 is a sectional view of embodiment 6 of the present invention;
FIG. 9 is a schematic structural view of embodiment 7 of the present invention;
FIG. 10 is a schematic structural view of example 8 of the present invention;
FIG. 11 is an enlarged view of a part of embodiment 8 of the present invention;
fig. 12 is a schematic structural diagram of an insulating layer according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The slot insulation method of the flat wire motor stator comprises the flat wire motor stator, and a stator slot is arranged in the flat wire motor stator, and is characterized in that an insulation pipe is arranged in the stator slot, and the insulation pipe is an integrally formed insulation pipe; the insulating tubes are symmetrically inserted into the stator wire slots.
Further, the method for symmetrically inserting the insulating tube into the stator wire slot comprises the following steps:
s1, selecting a formed insulating pipe sleeve matched with the size of a stator wire slot of a flat wire motor, and cutting and preprocessing the length of the insulating pipe sleeve according to the size of a stator;
s2, placing a flat wire motor stator to be inserted into a pipe into a positioning sleeve plate for fixing;
s3, putting the preprocessed insulating pipe sleeve into a feeding mechanism, and conveying the insulating pipe sleeve to a rear positioning mechanism through a conveying mechanism;
s4, sleeving and clamping the insulating pipe of the positioning mechanism to the upper end plane of the stator wire slot of the flat wire motor through the material clamping mechanism;
s5, moving the guide mechanism to the upper part of the flat wire motor stator of the positioning sleeve plate; steps S4 and S5 are synchronously performed;
s6, the material clamping mechanism sends the insulation sleeve into a stator wire slot of the flat wire motor through a guide mechanism;
s7, all the insulation sleeves are plugged into the stator wire slots of the flat wire motor through a leveling mechanism;
s8, taking out the processed flat wire motor stator, putting in a new flat wire motor stator, resetting each mechanism, and repeating the steps S1-S7.
Referring to fig. 1, the winding insulation sleeve of the present embodiment includes 2 insulation layers and 1 wear-resistant layer on the wall of the winding insulation sleeve, and the cross section of the insulation sleeve is racetrack-shaped.
Further, the insulating sleeve is formed by spirally winding 3 strips arranged side by side around an axis, the insulating layer and the wear-resistant layer are respectively formed on the insulating sleeve, a first overlapping area 11 and a second overlapping area 12 are arranged on the edges of the strips along the direction of the strips, and the first overlapping area 11 and the second overlapping area 12 between the adjacent strips are overlapped. The 3 strips are respectively an insulating strip 1, an insulating strip 2 and a wear-resistant strip 3, the insulating strip 1 is arranged on the inner side of the insulating strip 2, and the insulating strip 2 is arranged on the inner side of the wear-resistant strip 3. After the spiral winding, the 3 overlapped strips form a first insulating layer, a second insulating layer and a wear-resistant layer which are mutually staggered. The wear-resistant layer is wrapped on the outer surface of the sleeve.
Further, the first overlapping area 11 is disposed in front of the second overlapping area 12.
In this embodiment, the insulating layer is made of a flame-retardant, high-temperature and high-pressure resistant, corrosion-resistant insulating material, such as a commercially available PI film tape, and the wear-resistant layer is made of a flame-retardant, high-temperature resistant, corrosion-resistant, wear-resistant insulating material, such as a commercially available NOMEX insulating paper.
Example 2
The present embodiment provides a flat wire motor stator on an electric vehicle driving motor, as shown in fig. 2 and fig. 3, including a stator body 5 and stator teeth 6 arranged on an inner ring of the stator body, a stator slot 7 for accommodating a stator winding is formed between adjacent stator teeth, and 2 stator insulating sleeves 4 of the electric vehicle driving motor according to embodiment 1 are inserted into the stator slot.
In this embodiment, the stator body is formed by laminating a plurality of layers of annular silicon steel sheets, and after the lamination, the stator slot is punched by a punch.
Example 3
The present embodiment provides a flat wire motor stator of a driving motor for an electric vehicle, as shown in fig. 4, including a stator body 5 and stator teeth 6 arranged on an inner ring of the stator body, a stator slot 7 for accommodating a stator winding is formed between adjacent stator teeth, and 2 stator insulating sleeves 4 of a brushless dc motor as described in embodiment 1 are inserted into the stator slot; a metal strip 8 is inserted into the insulating sleeve 4.
Furthermore, the stator body is formed by laminating a plurality of layers of annular silicon steel sheets.
Furthermore, two ends of the stator body are provided with short circuit rings 9 for conducting metal strips in adjacent stator wire slots.
In this embodiment, the metal strip is a commercially available enameled copper strip or a bare copper strip.
Example 4
The present embodiment provides a driven flat-wire motor stator for an electric vehicle, as shown in fig. 5, including a stator body 5 and stator teeth 6 arranged on an inner ring of the stator body, a stator slot 7 for accommodating a stator winding is formed between adjacent stator teeth, and 1 stator insulating sleeve 4 of the electric vehicle driving motor according to embodiment 1 is inserted into the stator slot; a metal strip 8 is inserted into the insulating sleeve 4.
Furthermore, the stator body is formed by laminating a plurality of layers of annular silicon steel sheets.
Example 5
As shown in fig. 6, the present embodiment provides an insulating tube for a flat-wire motor stator of an electric vehicle driving motor, a tube wall of the insulating tube includes 1 insulating layer and 2 wear-resistant layers, and a cross section of the insulating tube is racetrack-shaped.
Further, the insulating sleeve is formed by spirally winding 3 strips arranged side by side around an axis, the insulating layer and the wear-resistant layer are respectively formed on the insulating sleeve, a first overlapping area 11 and a second overlapping area 12 are arranged on the edges of the strips along the direction of the strips, and the first overlapping area 11 and the second overlapping area 12 between the adjacent strips are overlapped. The 3 strips are respectively an insulating strip 1, a wear-resistant strip 10 and a wear-resistant strip 3, the insulating strip 1 is arranged on the inner side of the wear-resistant strip 10, and the wear-resistant strip 10 is arranged on the inner side of the wear-resistant strip 3. After the spiral winding, 3 overlapped strip materials form an insulating layer, a first wear-resistant layer and a second wear-resistant layer which are mutually staggered. The first wear-resistant layer and the second wear-resistant layer are wrapped on the inner surface and the outer surface of the insulating sleeve.
Furthermore, a first overlapping zone 11 of the three strips is arranged in front of a second overlapping zone 12.
In this embodiment, the insulating layer is made of a commercially available PI film tape, and the wear-resistant layer is made of an insulating paper wear-resistant material.
Example 6
The present embodiment provides an insulation tube for a flat wire motor stator of an electric vehicle driving motor, the tube wall of which includes 1 insulation layer and 1 wear-resistant layer, as shown in fig. 7, and the cross section of the insulation tube is a rounded rectangle, as shown in fig. 8.
Furthermore, the insulating sleeve is formed by spirally winding 2 strips arranged side by side around an axis, the insulating layer and the wear-resistant layer are respectively formed on the insulating sleeve, a first overlapping area and a second overlapping area are arranged on the edge of each strip along the direction of the strip, and the first overlapping area and the second overlapping area between every two adjacent strips are overlapped. The 3 strips are respectively an insulating strip 1 and a wear-resistant strip 3, and the insulating strip 1 is arranged on the inner side of the wear-resistant strip 3. After the spiral winding, the 2 overlapped belt materials form the insulating layer and the wear-resistant layer which are mutually staggered.
Further, a first overlapping zone of 2 strips is disposed in front of the second overlapping zone.
In this embodiment, the insulating layer is made of a commercially available PI film tape, and the wear-resistant layer is made of an insulating paper wear-resistant material.
Example 7
As shown in fig. 9, the present embodiment provides an insulating tube for a flat-wire motor stator of an electric vehicle driving motor, a tube wall of the insulating tube includes 2 insulating layers and 2 wear-resistant layers, and a cross section of the insulating tube is racetrack-shaped.
Furthermore, the insulating sleeve is formed by spirally winding 4 strips arranged side by side around an axis, the insulating layer and the wear-resistant layer are respectively formed on the insulating sleeve, a first overlapping area and a second overlapping area are arranged on the edge of each strip along the direction of the strip, and the first overlapping area and the second overlapping area between every two adjacent strips are overlapped. The 4 belts are respectively a wear-resistant belt 14, an insulating belt 1, an insulating belt 2 and a wear-resistant belt 3 from inside to outside, and the 4 belts overlapped with each other form an insulating layer and a wear-resistant layer which are staggered with each other. The wear resistant layers formed by the wear resistant strip 14 and the wear resistant strip 3 are located on the outer surface and the inner surface of the insulating sleeve, respectively.
Furthermore, the first overlapping area is arranged in front of the second overlapping area.
In this embodiment, the insulating layer is made of a commercially available PI film tape, and the wear-resistant layer is made of an insulating paper wear-resistant material.
Example 8
The present embodiment provides a flat-wire motor stator of a driving motor for an electric vehicle, as shown in fig. 10 and 11, including a stator body 15 and stator teeth 16 disposed on an outer ring of the stator body, a stator slot 17 for accommodating a stator winding is formed between adjacent stator teeth, and 1 stator insulating sleeve 4 of the driving motor for an electric vehicle as described in embodiment 1 is inserted into the stator slot; a metal strip 8 is inserted into the insulating sleeve 4.
Furthermore, two ends of the stator body are provided with short circuit rings 9 for conducting metal strips in adjacent stator wire slots.
Example 9
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer 100, a polyethylene layer 200, a polyaramid layer 300, a silica layer 400, and a polypropylene layer 500, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 29 parts of polyvinyl alcohol, 9 parts of nano silicon dioxide, 21 parts of polyvinylpyrrolidone and 43 parts of epoxy silsesquioxane acrylic resin.
The adhesive disclosed by the invention can effectively improve the matching stability of the adhesive and each layer of material through the synergistic effect of polyvinyl alcohol, polyvinylpyrrolidone and epoxy silsesquioxane acrylic resin, and can improve the properties of surface heat resistance, oxidation resistance, hardness and the like of each layer of material, so that the internal stability of the insulating layer is greatly improved, and the effect of 100% insulation can be achieved.
Example 10
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer, a polyethylene layer, a polyaramid layer, a silica layer, and a polypropylene layer, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 33 parts of polyvinyl alcohol, 8 parts of nano silicon dioxide, 24 parts of polyvinylpyrrolidone and 53 parts of epoxy silsesquioxane acrylic resin.
The adhesive disclosed by the invention can effectively improve the matching stability of the adhesive and each layer of material through the synergistic effect of polyvinyl alcohol, polyvinylpyrrolidone and epoxy silsesquioxane acrylic resin, and can improve the properties of surface heat resistance, oxidation resistance, hardness and the like of each layer of material, so that the internal stability of the insulating layer is greatly improved, and the effect of 100% insulation can be achieved.
Example 11
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer, a polyethylene layer, a polyaramid layer, a silica layer, and a polypropylene layer, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 23 parts of polyvinyl alcohol, 6 parts of nano silicon dioxide, 15 parts of polyvinylpyrrolidone and 38 parts of epoxy silsesquioxane acrylic resin.
The adhesive disclosed by the invention can effectively improve the matching stability of the adhesive and each layer of material through the synergistic effect of polyvinyl alcohol, polyvinylpyrrolidone and epoxy silsesquioxane acrylic resin, and can improve the properties of surface heat resistance, oxidation resistance, hardness and the like of each layer of material, so that the internal stability of the insulating layer is greatly improved, and the effect of 100% insulation can be achieved.
Example 12
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer, a polyethylene layer, a polyaramid layer, a silica layer, and a polypropylene layer, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 38 parts of polyvinyl alcohol, 13 parts of nano silicon dioxide, 27 parts of polyvinylpyrrolidone and 56 parts of epoxy silsesquioxane acrylic resin.
The adhesive disclosed by the invention can effectively improve the matching stability of the adhesive and each layer of material through the synergistic effect of polyvinyl alcohol, polyvinylpyrrolidone and epoxy silsesquioxane acrylic resin, and can improve the properties of surface heat resistance, oxidation resistance, hardness and the like of each layer of material, so that the internal stability of the insulating layer is greatly improved, and the effect of 100% insulation can be achieved.
Example 13
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer 100, a polyethylene layer 200, a polyaramid layer 300, a silica layer 400, and a polypropylene layer 500, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 29 parts of polyvinyl alcohol, 9 parts of nano silicon dioxide and 21 parts of polyvinylpyrrolidone.
Example 14
This example provides a method similar to example 1, except that the insulating layer includes a polyimide layer 100, a polyethylene layer 200, a polyaramid layer 300, a silica layer 400, and a polypropylene layer 500, which are sequentially disposed, and the thickness ratio of the polyimide layer, the polyethylene layer, the polyaramid layer, the silica layer, and the polypropylene layer is 2:1:2:1: 1.
According to the invention, through the research of a great deal of creative work, the inventor of the application can meet the requirements of different insulation conditions by setting each layer of the insulating layer and by the synergistic effect of the layers, and the insulating layer has very excellent insulating performance no matter in the environment of high temperature, low temperature or high humidity.
Furthermore, the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 29 parts of polyvinyl alcohol, 9 parts of nano silicon dioxide and 21 parts of polyvinylpyrrolidone.
Evaluation of adhesive Properties
The adhesives of examples 9-14 were each separately coated on a platen and pre-cured by pre-curing. After passing through heating, polishing and the like, the friction material is produced by a known production method. The friction material was subjected to a shear test (according to JISD 4422) at normal temperature, and the shear strength and the cracking area of the base material were measured, and the results are shown in the following table.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art. It should be noted that the technical features not described in detail in the present invention can be implemented by any prior art.
Claims (6)
1. The slot insulation method of the flat wire motor stator comprises the flat wire motor stator, and a stator slot is arranged in the flat wire motor stator, and is characterized in that an insulation pipe is arranged in the stator slot, and the insulation pipe is an integrally formed insulation pipe; the insulating tubes are symmetrically inserted into the stator wire slots;
the method for symmetrically inserting the insulating tube into the stator wire slot comprises the following steps:
s1, selecting a formed insulating tube matched with the size of a stator wire slot of a flat wire motor, and cutting and preprocessing the length of the insulating sleeve according to the size of the stator;
s2, placing a flat wire motor stator to be inserted into a pipe into a positioning sleeve plate for fixing;
s3, putting the preprocessed insulating tube into a feeding mechanism, and conveying the insulating tube to a rear positioning mechanism through a conveying mechanism;
s4, clamping and conveying the insulating pipe of the positioning mechanism to the upper end plane of the stator wire slot of the flat wire motor through the material clamping mechanism;
s5, moving the guide mechanism to the upper part of the flat wire motor stator of the positioning sleeve plate; steps S4 and S5 are synchronously performed;
s6, the material clamping mechanism sends the insulation sleeve into a stator wire slot of the flat wire motor through a guide mechanism;
s7, all the insulation sleeves are plugged into the stator wire slots of the flat wire motor through a leveling mechanism;
s8, taking out the processed flat wire motor stator, putting in a new flat wire motor stator, resetting each mechanism, and repeating the steps S1-S7;
the insulating pipe comprises one or more insulating layers and one or more wear-resistant layers, and the section of the insulating pipe is rectangular, racetrack-shaped, oval or circular; the wear-resistant layer is arranged on the inner surface and/or the outer surface of the insulating tube;
the insulation layer comprises a polyimide layer, a polyethylene layer, a polyaramide layer, a silicon dioxide layer and a polypropylene layer which are sequentially arranged, wherein the thickness ratio of the polyimide layer to the polyethylene layer to the polyaramide layer to the silicon dioxide layer to the polypropylene layer is 2:1:2:1: 1;
the layers are fixedly connected through an adhesive, and the adhesive comprises the following components in parts by weight: 23-38 parts of polyvinyl alcohol, 6-13 parts of nano silicon dioxide, 15-27 parts of polyvinylpyrrolidone and 38-56 parts of epoxy silsesquioxane acrylic resin.
2. The slot insulation method of a flat wire motor stator according to claim 1, wherein the insulation tube is any one of a spiral winding-formed insulation tube, an extrusion-formed insulation tube, an injection-formed insulation tube, and a blow-formed insulation tube.
3. The slot insulation method of a flat wire motor stator according to claim 2, wherein the cross section of the insulation tube is a right-angled rectangle, a circular arc rectangle, or a racetrack shape.
4. The slot insulation method of a stator of a flat-wire motor according to claim 3, wherein the insulation tube is compounded by spirally winding side-by-side strips along an axis, the edges of the strips are provided with a first overlapping area and a second overlapping area in the direction of the strips, and the first overlapping area and the second overlapping area between the adjacent strips overlap.
5. The slot insulation method of a flat-wire motor stator according to claim 4, wherein the spiral winding means that the strip material is spirally wound along an axis, and the first overlapping area is disposed in front of the second overlapping area.
6. The slot insulation method of a flat wire motor stator according to claim 5, wherein the abrasion resistant layer is formed in two layers, respectively provided on the outer surface and the inner surface of the insulation tube, and the insulation layer is provided between the two abrasion resistant layers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811009964.7A CN109327096B (en) | 2018-08-31 | 2018-08-31 | Slot insulation method of flat wire motor stator |
| PCT/CN2018/106202 WO2020042245A1 (en) | 2018-08-31 | 2018-09-18 | Slot insulation method for flat-wire motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811009964.7A CN109327096B (en) | 2018-08-31 | 2018-08-31 | Slot insulation method of flat wire motor stator |
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| Publication Number | Publication Date |
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| CN109327096A CN109327096A (en) | 2019-02-12 |
| CN109327096B true CN109327096B (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811009964.7A Active CN109327096B (en) | 2018-08-31 | 2018-08-31 | Slot insulation method of flat wire motor stator |
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| CN109462317A (en) | 2018-08-31 | 2019-03-12 | 惠州领标精密机械有限公司 | A kind of insertion method and insertion equipment of flat wire motor stator wire casing insulative pipe sleeve |
| DE102021109441A1 (en) | 2021-04-15 | 2022-10-20 | Schaeffler Technologies AG & Co. KG | Stator and method of manufacturing a stator |
| DE102021115010B4 (en) | 2021-06-10 | 2023-02-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Process for manufacturing a stator for an electrical machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205389147U (en) * | 2015-12-17 | 2016-07-20 | 程成 | Drive motor of an electric vehicle's winding insulation sleeve pipe, stator and rotor |
| CN206517187U (en) * | 2017-03-17 | 2017-09-22 | 苏州贯龙电磁线有限公司 | A kind of low wind speed wind-powered electricity generation stator for motors winding wire |
| CN107994693A (en) * | 2016-10-26 | 2018-05-04 | 日本电产株式会社 | Insulating trip insertion apparatus, insulating trip insertion method, stator manufacturing apparatus and motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6299729B2 (en) * | 2015-11-04 | 2018-03-28 | トヨタ自動車株式会社 | Rotating electrical machine stator |
| CN206332526U (en) * | 2016-11-30 | 2017-07-14 | 天津市松正电动汽车技术股份有限公司 | A kind of lenticular wire motor stator slot insulation structure |
| CN107671192A (en) * | 2017-09-28 | 2018-02-09 | 台山市江口电器制造有限公司 | A kind of stator core is clapped machine automatic feeding |
| CN109462317A (en) * | 2018-08-31 | 2019-03-12 | 惠州领标精密机械有限公司 | A kind of insertion method and insertion equipment of flat wire motor stator wire casing insulative pipe sleeve |
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2018
- 2018-08-31 CN CN201811009964.7A patent/CN109327096B/en active Active
- 2018-09-18 WO PCT/CN2018/106202 patent/WO2020042245A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205389147U (en) * | 2015-12-17 | 2016-07-20 | 程成 | Drive motor of an electric vehicle's winding insulation sleeve pipe, stator and rotor |
| CN107994693A (en) * | 2016-10-26 | 2018-05-04 | 日本电产株式会社 | Insulating trip insertion apparatus, insulating trip insertion method, stator manufacturing apparatus and motor |
| CN206517187U (en) * | 2017-03-17 | 2017-09-22 | 苏州贯龙电磁线有限公司 | A kind of low wind speed wind-powered electricity generation stator for motors winding wire |
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| WO2020042245A1 (en) | 2020-03-05 |
| CN109327096A (en) | 2019-02-12 |
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