CN112510949A - No yoke stator module and axial permanent magnetism wheel hub formula motor - Google Patents
No yoke stator module and axial permanent magnetism wheel hub formula motor Download PDFInfo
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- CN112510949A CN112510949A CN202011197576.3A CN202011197576A CN112510949A CN 112510949 A CN112510949 A CN 112510949A CN 202011197576 A CN202011197576 A CN 202011197576A CN 112510949 A CN112510949 A CN 112510949A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
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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
- H02K1/16—Stator cores with slots for windings
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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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Abstract
The invention relates to a non-magnetic yoke stator assembly and an axial permanent magnet hub type motor. It has solved current stator technical problem such as heavy in weight. Including the stator body that has stator coil winding and stator core subassembly, stator coil winding is the annular structure that sets up and form by a plurality of stator coil group circumference distributions, and stator core subassembly has a plurality of magnetizers, thereby links to each other through insulating magnetism thermoset material solidification between stator coil winding and stator core subassembly and forms the solid type support of stator between stator coil winding and stator core subassembly, has interior magnetism structure and/or outer magnetism structure of stopping up on the solid type support of stator. Has the advantages that: a stator magnetic yoke structure is cancelled, the magnetic resistance is small, the volume and the weight of the stator are reduced, and the internal and external magnetic insulation structure can reduce the radial diffusion of magnetic force, so that the conversion rate of converting magnetic field force into power is high, and the loss is small; the hub motor is strong in stability, and the shaft system size of the hub motor is reduced due to the flat design.
Description
Technical Field
The invention belongs to the technical field of motor equipment, and particularly relates to a non-magnetic yoke stator assembly and an axial permanent magnet hub type motor.
Background
The axial permanent magnet hub type motor has many advantages as a new energy driving motor, for example, the axial permanent magnet hub type motor can be directly arranged in a hub of a wheel to directly drive an automobile to run, so that the occupied space of an automobile power system is saved, and the weight and the structural complexity of the whole automobile are reduced. The wheel hub has the greatest characteristic that driving, transmission and braking devices are integrated into the wheel hub, and transmission parts such as a clutch, a transmission shaft, a differential mechanism, a transfer case and the like are omitted. With the increasing attention of consumers to new energy automobiles, the technology of the hub motor will also come into the field of vision of people, and the demand of the hub motor is increased explosively. Because in the wheel hub of wheel hub motor installation in the car, the installation space of motor is very limited, and current ordinary wheel hub motor's stator module generally has the stator yoke, and the magnetic field is not produced to yoke itself, only plays the effect of magnetic line transmission in the magnetic circuit, and because rotor yoke volume and weight are great, lead to motor volume and weight great easily, be unfavorable for the installation of whole car to arrange, has caused certain influence to axial permanent magnetism wheel hub motor's development undoubtedly like this.
In order to solve the problems of the prior art, various solutions have been proposed through long-term research, and, for example, chinese patent literature discloses a high power density axial flux hub motor having a short axial structure [ application No.: CN201921386106.4 ]: the planetary speed reducer comprises a planetary speed reducer, wherein an output shaft of a rotor assembly is connected with an input shaft of the planetary speed reducer, and an output shaft of the planetary speed reducer is connected with a hub bearing unit; the axial magnetic flux stator component comprises a water-cooling shell, a plurality of fins are arranged on the inner wall of the water-cooling shell, and a winding is wound on a stator iron core and embedded between adjacent fins on the inner wall of the water-cooling shell and fixed through glue filling and sealing.
Above-mentioned scheme adopts birotor stator piecemeal no yoke axial magnetic flux topological structure, has realized wheel hub motor does not have yoke, but because parts such as its inside planetary reducer that sets up have increased wheel hub motor's volume and weight to a certain extent like this, and simultaneously, this scheme still exists: the conversion rate of converting magnetic field force into power is low, and the magnetic force loss is large.
Disclosure of Invention
The present invention addresses the above-described problems by providing a yoke-less, yoke-less stator assembly having low magnetic losses.
Another object of the present invention is to solve the above problems and provide a high stability and high power axial permanent magnet hub motor.
In order to achieve the purpose, the invention adopts the following technical scheme: this no magnetism yoke stator module, including the stator body that has stator coil winding and stator core subassembly, its characterized in that, stator coil winding be the loop configuration that forms by a plurality of stator coil group circumference distribution settings, stator core subassembly have a plurality of centre of a circle that use stator coil winding set up and inlay respectively one by one and locate the magnetizer between two adjacent stator coil group as center circumference distribution, just stator coil winding and stator core subassembly between thereby form the solid type support of stator through insulating magnetism heat setting material solidification and link to each other between stator coil winding and stator core subassembly, just the solid type support of stator on have and lie in the inboard outer magnetism structure of insulating of stator core subassembly circumference and/or lie in the stator core subassembly circumference outside.
In foretell no yoke stator module, form the winding clearance between two adjacent stator coil group middles, winding clearance circumference evenly distributed set up, just magnetizer all be the slice and inlay respectively and locate in the winding clearance, the solid type support both ends terminal surface circumference of stator have respectively and lead the magnetic surface with the annular that stator core subassembly corresponds.
In the above-mentioned stator assembly without magnetic yoke, the inner magnetic insulation structure includes an inner annular magnetic insulation portion formed on the circumferential inner side of the stator fixing support and located on the circumferential inner side of the stator core assembly, and the circumferential inner side of the stator coil winding away from the stator core assembly is solidified in the inner annular magnetic insulation portion; the outer magnetic insulation structure comprises an outer annular magnetic insulation part which is formed on the circumferential outer side of the stator fixing support and located on the circumferential outer side of the stator iron core component, and the stator coil winding is away from the circumferential outer side of the stator iron core component and is wholly or partially solidified in the outer annular magnetic insulation part.
In the above-mentioned no yoke stator module, the interior annular portion of insulating magnetism and the outer annular portion of insulating magnetism distribute concentrically respectively and set up and outer annular portion of insulating magnetism is located the outer side of annular portion of insulating magnetism circumference, thereby the stator solid type support form by the resin material pouring and form above-mentioned outer annular portion of insulating magnetism and inner annular portion of insulating magnetism, and be formed with the solid type connecting portion that covers the terminal surface outside of locating stator coil winding and/or stator iron core subassembly in outer annular portion of insulating magnetism and inner annular portion of insulating magnetism.
In the stator assembly without the magnetic yoke, the stator fixing support is annular, and a motor shaft is arranged at the center of the stator fixing support through the stator shaft mounting structure.
In the above-mentioned stator assembly without magnetic yoke, the stator shaft mounting structure includes a stator shaft fixing hole formed at the center of the stator fixing bracket, the motor shaft is arranged in the stator shaft fixing hole in a penetrating way, a motor shaft mounting seat positioned at one end of the stator fixing bracket is arranged on the outer side of the circumference of the motor shaft, a plurality of positioning keys are respectively arranged on the outer side of the motor shaft in the circumferential direction, key grooves which are respectively corresponding to the positioning keys and mutually matched with the positioning keys are arranged on the stator shaft fixing hole in the circumferential direction, the motor shaft fixing seat positioned at the other end of the stator fixing bracket is sleeved on the outer side of the circumferential direction of the motor shaft, and the inner side of the circumferential direction of the motor shaft fixing seat is provided with a positioning groove which is mutually clamped with the positioning key, the stator fixing bracket is provided with a plurality of through holes which are positioned at the circumferential periphery of the stator shaft fixing hole, the motor shaft fixing seat and the motor shaft mounting seat are correspondingly arranged and are connected through a fixing screw assembly penetrating through the through hole; the motor shaft be hollow form and wear to be equipped with a plurality of stator wires that link to each other with stator coil group in the motor shaft, just stator wire one end inlay and locate the solid type support of stator, the other end is worn out and is penetrated in the motor shaft by the through wires groove in the outside of motor shaft circumference from the inside through wires hole of stator shaft fixed orifices circumference, motor shaft mount pad and motor shaft fixing base make by magnetic material.
In the above-mentioned yokeless stator assembly, each stator coil group has two stator coil bodies in a flat curved shape, and each stator coil body includes a vertical portion, the upper end of the vertical portion has a coil outer curved portion arranged obliquely and the upper end of the coil outer curved portion has a coil outer connecting portion arranged bent toward the outside, and the lower end of the vertical portion has a coil inner curved portion inclined toward a different direction from the coil outer curved portion and the lower end of the coil inner curved portion has a coil inner connecting portion bent toward the outside, the coil outer connecting portions or the coil inner connecting portions on two stator coil bodies arranged in a staggered manner in different stator coil groups in the stator coil winding are arranged in close contact with each other, and the side portions of the vertical portions of the stator coil bodies in the same group of stator coil groups are arranged adjacently, and the winding gap is formed between the vertical portions of the stator coil bodies of the two adjacent stator coil groups, the coil outer bending part and the coil inner bending part of the stator coil body in the same group of stator coil group are respectively inclined towards different directions and are arranged in a crossed manner, the coil outer bending part or the coil inner bending part of the stator coil body arranged in a staggered manner in two adjacent stator coil groups are arranged in a crossed manner, the coil outer bending part on the stator coil body in the stator coil group is close to one end of the vertical part and is respectively solidified in the outer annular magnetic insulation part, the coil inner bending part and the coil inner connecting part on the stator coil body in the stator coil group are respectively solidified in the inner annular magnetic insulation part, the magnetizer is formed by overlapping a plurality of silicon steel sheets, and two sides of the magnetizer respectively exceed one side of the vertical part or are flushed with one side of the vertical part.
An axial permanent magnet hub motor having the yokeless stator assembly described above is as follows: this axial permanent magnetism wheel hub formula motor, including motor casing, motor casing circumferential direction set up on the motor shaft, the motor shaft on the fixed stator body that is equipped with, just stator body both sides have respectively and rotate the rotor subassembly that sets up on the motor shaft and link to each other with motor casing, just the rotor subassembly be annular slice and be close to one side circumference of stator body and have a plurality of permanent magnets, just the permanent magnet respectively with the stator of stator body on the solid type support terminal surface of annular magnetic conduction face corresponding.
In foretell axial permanent magnetism wheel hub formula motor, the rotor subassembly locate the magnet steel frame on the motor shaft including being annular slice and cover, magnet steel frame circumference a plurality of magnet steel mounting holes have, just the mounting hole in be equipped with the permanent magnet respectively, magnet steel frame keep away from one side of the stator body and link to each other with motor casing through the rotor core that sets up with the magnet steel frame with one heart and be annular slice.
In foretell axial permanent magnetism hub motor, motor casing include two motor end covers that locate on the motor shaft through the installation bearing housing and correspond the setting each other, motor end cover inboard the ring channel that is used for installing rotor core has, just the motor end cover between be equipped with and be the tube-shape and circumference have the motor frame of a plurality of heat dissipation muscle, just the motor frame be located stator body circumference periphery, just motor end cover and motor frame between link to each other through motor construction bolt subassembly.
Compared with the prior art, the invention has the advantages that:
1. the magnetic yoke structure of the stator is cancelled, the magnetic resistance is small, the volume and the weight of the stator are reduced, the production cost is saved, the radial diffusion of magnetic force can be reduced by the internal and external magnetic insulation structure, the conversion rate of converting magnetic field force into power is high, and the loss is small;
2. the hub motor adopts a dual-rotor structure, the power is large, the stability is strong, and the shaft system size of the hub motor is reduced by the flat design.
Drawings
FIG. 1 is a schematic view of a stator body according to the present invention;
FIG. 2 is a structural cross-sectional view of a stator body in the present invention;
FIG. 3 is an exploded view of the stator body according to the present invention;
FIG. 4 is a partial structural view of a stator coil winding in accordance with the present invention;
FIG. 5 is a schematic view of the structure of the motor of the present invention;
fig. 6 is a structural sectional view of the motor of the present invention;
fig. 7 is an exploded view of the structure of the motor of the present invention;
FIG. 8 is an exploded view of the structure of the rotor assembly of the present invention;
in the figure, the stator body 1, the stator winding 2, the stator coil group 21, the stator coil body 211, the vertical part 212, the coil outer bending part 213, the coil outer connecting part 214, the coil inner bending part 215, the coil inner connecting part 216, the winding gap 22, the annular magnetic conducting surface 23, the stator core assembly 3, the magnetic conductor 31, the stator fixing bracket 4, the inner annular magnetic insulating part 41, the outer annular magnetic insulating part 42, the fixing connecting part 43, the stator shaft mounting structure 5, the stator shaft fixing hole 51, the motor shaft mounting seat 52, the positioning key 53, the key groove 54, the motor shaft fixing seat 55, the positioning groove 56, the through hole 57, the fixing screw assembly 58, the stator lead wire 59, the threading hole 591, the threading groove 592, the motor shaft 6, the motor housing 7, the mounting bearing 71, the motor end cover 72, the annular groove 73, the motor base 74, the motor mounting bolt assembly 75, the rotor assembly 8, the permanent magnet 81, the, Magnet steel mounting hole 83, rotor core 84.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the present non-magnetic yoke stator assembly includes a stator body 1 having a stator coil winding 2 and a stator core assembly 3, the stator coil winding 2 is an annular structure formed by circumferentially distributing a plurality of stator coil groups 21, the stator core assembly 3 has a plurality of magnetizers 31 circumferentially distributed by taking the center of circle of the stator coil winding 2 as the center and respectively embedded between two adjacent stator coil groups 21, preferably, a winding gap 22 is formed between the middle portions of two adjacent stator coil groups 21, the winding gap 22 is circumferentially and uniformly distributed, the magnetizers 31 are both sheet-shaped and respectively embedded in the winding gap 22, the end faces of the stator fixing support 4 are circumferentially provided with annular magnetic conductive surfaces 23 corresponding to the stator core assembly 3, wherein, the magnetizers 31 may be formed by overlapping a plurality of silicon steel sheets, which can reduce the processing cost, make leftover bits can be utilized, magnetizer 31 that can make through the silicon steel sheet again can improve the magnetic conduction effect, thereby link to each other through insulating magnetism insulation thermosetting material solidification between stator coil winding 2 and the stator iron core subassembly 3 here and form stator solid type support 4 between stator coil winding 2 and stator iron core subassembly 3, and have on the stator solid type support 4 and lie in 3 circumference inboard interior magnetism insulation structures of stator iron core subassembly and/or lie in 3 circumference outside outer magnetism insulation structures of stator iron core subassembly. Obviously, through interior magnetic structure and outer magnetic structure of stopping can prevent effectively that magnetic force from radially outwards diffusing, improve the utilization efficiency of magnetic force for magnetic field force turns into the conversion rate of power and is high, and the loss is little, simultaneously, has cancelled stator yoke structure, and the magnetic resistance is little, has reduced the volume and the weight of stator, practices thrift manufacturing cost.
Further, the internal magnetism insulating structure here includes an internal annular magnetism insulating portion 41 formed on the circumferential inner side of the stator fixing bracket 4 and located on the circumferential inner side of the stator core assembly 3, and the circumferential inner side of the stator coil winding 2 away from the stator core assembly 3 is solidified in the internal annular magnetism insulating portion 41; the outer magnetism insulation structure comprises an outer annular magnetism insulation part 42 which is formed on the circumferential outer side of the stator fixing type support 4 and located on the circumferential outer side of the stator iron core component 3, and the circumferential outer side, far away from the stator iron core component 3, of the stator coil winding 2 is wholly or partially solidified in the outer annular magnetism insulation part 42. Obviously, the inner annular magnetism insulating portion 41 and the outer annular magnetism insulating portion 42 are located inside and outside the stator core assembly 3 in the circumferential direction, respectively, and this can effectively reduce the radial diffusion of the magnetic force of the stator core assembly 3.
Preferably, the inner ring-shaped magnetism insulating portion 41 and the outer ring-shaped magnetism insulating portion 42 are respectively concentrically arranged, the outer ring-shaped magnetism insulating portion 42 is located on the circumferential outer side of the inner ring-shaped magnetism insulating portion 41, the stator fixing type support 4 is formed by resin material casting so as to form the outer ring-shaped magnetism insulating portion 42 and the inner ring-shaped magnetism insulating portion 41, and the outer ring-shaped magnetism insulating portion 42 and the inner ring-shaped magnetism insulating portion 41 are formed with fixing type connecting portions 43 covering the end faces of the stator coil winding 2 and/or the stator core assembly 3. Obviously, the fixing connection portion 43 is used to fix the magnetizer 31 in the winding gap 22, wherein the fixing connection portion 43 may slightly protrude from the end face of the stator coil winding 2 or the stator core assembly 3 or may be flush with the end face, which may not only improve the degree of fixing, but also prevent the fixing connection portion 43 from hindering the axial diffusion of the magnetic force of the stator core assembly 3.
The stator fixing support 4 in this embodiment is annular, and a motor shaft 6 is arranged at the center of the stator fixing support 4 through a stator shaft mounting structure 5. Wherein, the stator shaft mounting structure 5 includes a stator shaft fixing hole 51 formed at the center of the stator fixing bracket 4, that is, the inner annular magnetism-insulating part 41 forms the stator shaft fixing hole 51 on the circumferential inner side, the motor shaft 6 is arranged in the stator shaft fixing hole 51 in a penetrating way, the circumferential outer side of the motor shaft 6 is provided with a motor shaft mounting seat 52 positioned at one end of the stator fixing bracket 4, the circumferential outer side of the motor shaft 6 is respectively provided with a plurality of positioning keys 53, the circumferential outer side of the stator shaft fixing hole 51 is provided with key slots 54 which are respectively corresponding to and matched with the positioning keys 53 one by one, the circumferential outer side of the motor shaft 6 is sleeved with a motor shaft fixing seat 55 positioned at the other end of the stator fixing bracket 4, the circumferential inner side of the motor shaft fixing seat 55 is provided with a positioning slot 56 clamped with the positioning keys 53, the stator fixing bracket 4 is provided with, the motor shaft fixing seat 55 and the motor shaft mounting seat 52 are correspondingly arranged and connected through a fixing screw assembly 58 penetrating through the through hole 57; obviously, the stator fixing bracket 4 is clamped and fixed between the motor shaft fixing seat 55 and the motor shaft mounting seat 52 by the fixing screw assembly 58.
Furthermore, the motor shaft 6 is hollow, a plurality of stator wires 59 connected with the stator coil group 21 penetrate through the motor shaft 6, one end of each stator wire 59 is embedded in the stator fixing support 4, the other end of each stator wire 59 penetrates out of a threading hole 591 on the circumferential inner side of the stator shaft fixing hole 51 and penetrates into the motor shaft 6 through a threading groove 592 on the circumferential outer side of the motor shaft 6, and the motor shaft 6, the motor shaft mounting seat 52 and the motor shaft fixing seat 55 are all made of a magnetism-insulating material, for example, other magnetism-insulating materials such as aluminum metal and the like can be adopted, so that the radial magnetism-insulating effect can be further improved.
As shown in fig. 1 to 4, in the present embodiment, each stator coil group 21 has two stator coil bodies 211 in a flat curved shape, and each stator coil body 211 includes a vertical portion 212, the vertical portion 212 has an outer coil bending portion 213 disposed obliquely at an upper end thereof and an outer coil connecting portion 214 disposed bent toward an outer side at an upper end thereof, and the vertical portion 212 has an inner coil bending portion 215 tilted in a different direction from the outer coil bending portion 213 at a lower end thereof and an inner coil connecting portion 216 bent outward at a lower end of the inner coil bending portion 215, the outer coil connecting portions 214 or the inner coil connecting portions 216 on two stator coil bodies 211 disposed in a staggered manner in different stator coil groups 21 in the stator coil winding 2 are disposed in close contact with each other, and the vertical portions 212 of the stator coil bodies 211 in the same stator coil group 21 are disposed adjacent to each other, and the winding gap 22 is formed between the vertical portions 212 of the stator coil bodies 211 in two adjacent stator coil groups 21, the coil outer bending part 213 and the coil inner bending part 215 of the stator coil body 211 in the same stator coil group 21 are respectively arranged obliquely towards different directions, and the coil outer bending part 213 or the coil inner bending part 215 of the stator coil body 211 arranged in a staggered manner in two adjacent stator coil groups 21 are arranged in a crossed manner, one end of the coil outer bending part 213 on the stator coil body 211 in the stator coil group 21 close to the vertical part 212 is respectively solidified in the outer annular magnetism-insulating part 42, the coil inner bending part 215 and the coil inner connecting part 216 on the stator coil body 211 in the stator coil group 21 are respectively solidified in the inner annular magnetism-insulating part 41, two sides of the magnetizer 31 respectively exceed one side of the vertical part 212 or one side of the vertical part 212, preferably, the magnetizer 31 here slightly exceeds one side of the vertical part 212, and the fixing type connecting part 43 is flush with the magnetizer 31 and/or covers the outer side of the vertical part 212.
As shown in fig. 5-8, in this embodiment, the axial permanent magnet hub motor includes a motor housing 7, the motor housing 7 is disposed on a motor shaft 6 in a circumferential direction, a stator body 1 is fixedly disposed on the motor shaft 6, rotor assemblies 8 rotatably disposed on the motor shaft 6 and connected to the motor housing 7 are respectively disposed on two sides of the stator body 1, the rotor assemblies 8 are in an annular sheet shape and have a plurality of permanent magnets 81 in a circumferential direction near one side of the stator body 1, the permanent magnets 81 respectively correspond to annular magnetic conductive surfaces 23 on end surfaces of stator fixing brackets 4 of the stator body 1, the rotor assemblies 8 are in two sets and are respectively disposed on two sides of the stator body 1, and a dual-rotor structure is adopted to improve power of the motor.
The rotor assembly 8 includes an annular sheet-shaped magnetic steel frame 82 sleeved on the motor shaft 6, the magnetic steel frame 82 has a plurality of magnetic steel mounting holes 83 in the circumferential direction, and permanent magnets 81 are respectively disposed in the mounting holes, and one side of the magnetic steel frame 82 away from the stator body 1 is connected with the motor housing 7 through an annular sheet-shaped rotor core 84 concentrically disposed with the magnetic steel frame 82.
Preferably, the motor housing 7 here includes two motor end covers 72 which are sleeved on the motor shaft 6 through the mounting bearing 71 and are arranged correspondingly to each other, an annular groove 73 for mounting the rotor core 84 is formed inside the motor end covers 72, a motor base 74 which is cylindrical and has a plurality of heat dissipation ribs 741 in the circumferential direction is arranged between the motor end covers 72, the motor base 74 is located at the circumferential periphery of the stator body 1, and the motor end covers 72 and the motor base 74 are connected through a motor mounting bolt assembly 75.
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.
Although the stator body 1, the stator coil winding 2, the stator coil group 21, the stator coil body 211, the vertical portion 212, the coil outer bent portion 213, the coil outer connecting portion 214, the coil inner bent portion 215, the coil inner connecting portion 216, the winding gap 22, the annular magnetic conductive surface 23, the stator core assembly 3, the magnetic conductive body 31, the stator fixing bracket 4, the inner annular magnetic insulating portion 41, the outer annular magnetic insulating portion 42, the fixing connecting portion 43, the stator shaft mounting structure 5, the stator shaft fixing hole 51, the motor shaft mounting seat 52, the positioning key 53, the key groove 54, the motor shaft fixing seat 55, the positioning groove 56, the through hole 57, the fixing assembly 58, the stator lead wire 59, the threading hole 591, the threading groove 592, the motor shaft 6, the motor housing 7, the mounting bearing 71, the motor end cover 72, the annular groove 73, the motor base 74, the motor mounting bolt assembly 75, the rotor assembly 8, the stator lead wire, Permanent magnet 81, magnet steel frame 82, magnet steel mounting holes 83, rotor core 84, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a there is not magnetic yoke stator module, is including stator body (1) that has stator coil winding (2) and stator core subassembly (3), its characterized in that, stator coil winding (2) be the loop configuration that forms by a plurality of stator coil group (21) circumference distribution settings, stator core subassembly (3) have a plurality of centre of a circle that use stator coil winding (2) set up and inlay magnetizer (31) between two adjacent stator coil group (21) one by one respectively as center circumference distribution, just stator coil winding (2) and stator core subassembly (3) between thereby form stator die fixing support (4) through insulating magnetism insulation heat-fixing material solidification link to each other between stator coil winding (2) and stator core subassembly (3), just stator die fixing support (4) on have and lie in stator core subassembly (3) circumference inboard inside magnetism insulation structure and/or lie in stator core subassembly (3) circumference outside And an external magnetic insulation structure.
2. The stator assembly without the magnetic yoke according to claim 1, wherein a winding gap (22) is formed between the middle portions of two adjacent stator coil groups (21), the winding gap (22) is circumferentially and uniformly distributed, the magnetizers (31) are both sheet-shaped and respectively embedded in the winding gap (22), and the end faces of both ends of the stator fixing support (4) are circumferentially provided with annular magnetic guide surfaces (23) corresponding to the stator core assembly (3).
3. The assembly of claim 2, wherein the inner magnetic insulation structure comprises an inner annular magnetic insulation part (41) which is formed at the circumferential inner side of the stator fixing bracket (4) and is positioned at the circumferential inner side of the stator iron core assembly (3), and the circumferential inner side of the stator coil winding (2) far away from the stator iron core assembly (3) is solidified in the inner annular magnetic insulation part (41); the outer magnetism insulation structure comprises an outer annular magnetism insulation part (42) which is formed on the circumferential outer side of the stator fixing support (4) and located on the circumferential outer side of the stator iron core assembly (3), and the stator coil winding (2) is away from the circumferential outer side of the stator iron core assembly (3) and is wholly or partially solidified in the outer annular magnetism insulation part (42).
4. The assembly of claim 3, wherein the inner annular magnetism-insulating portion (41) and the outer annular magnetism-insulating portion (42) are concentrically arranged and the outer annular magnetism-insulating portion (42) is located on the circumferential outer side of the inner annular magnetism-insulating portion (41), the stator fixing bracket (4) is formed by resin material in a pouring mode, so that the outer annular magnetism-insulating portion (42) and the inner annular magnetism-insulating portion (41) are formed, and fixing connecting portions (43) covering the end faces of the stator coil winding (2) and/or the stator core assembly (3) are formed on the outer annular magnetism-insulating portion (42) and the inner annular magnetism-insulating portion (41).
5. The assembly of claim 1, wherein the stator fixing bracket (4) is annular and the center of the stator fixing bracket (4) is provided with a motor shaft (6) through the stator shaft mounting structure (5).
6. The non-magnetic yoke stator assembly according to claim 5, characterized in that the stator shaft mounting structure (5) includes a stator shaft fixing hole (51) formed at the center of the stator fixing bracket (4), the motor shaft (6) is inserted into the stator shaft fixing hole (51), a motor shaft mounting seat (52) located at one end of the stator fixing bracket (4) is provided at the circumferential outer side of the motor shaft (6), a plurality of positioning keys (53) are respectively provided at the circumferential outer side of the motor shaft (6), key slots (54) corresponding to and cooperating with the positioning keys (53) one by one are provided at the circumferential outer side of the stator shaft (51), a motor shaft fixing seat (55) located at the other end of the stator fixing bracket (4) is sleeved at the circumferential outer side of the motor shaft (6), and a positioning slot (56) clamped with the positioning key (53) is provided at the circumferential inner side of the motor shaft fixing seat (55), the stator fixing support (4) is provided with a plurality of through holes (57) which are positioned on the circumferential periphery of the stator shaft fixing hole (51), and the motor shaft fixing seat (55) and the motor shaft mounting seat (52) are correspondingly arranged and are connected through fixing screw components (58) which are arranged in the through holes (57) in a penetrating way; the motor shaft (6) be hollow form and wear to be equipped with a plurality of stator wire (59) that link to each other with stator coil group (21) in motor shaft (6), and stator wire (59) one end inlay and locate stator solid type support (4), the other end is worn out and is penetrated in motor shaft (6) by threading groove (592) in motor shaft (6) circumference outside from threading hole (591) of stator shaft fixed orifices (51) circumference inboard, motor shaft (6), motor shaft mount pad (52) and motor shaft fixing base (55) make by magnetic materials.
7. The yokes-free stator assembly of claim 3, wherein each stator coil assembly (21) has two stator coil bodies (211) having a flat curved shape, and each stator coil body (211) includes a vertical portion (212), the vertical portion (212) has an outer coil bending portion (213) at an upper end thereof and an outer coil connecting portion (214) at an upper end thereof, and the vertical portion (212) has an inner coil bending portion (215) at a lower end thereof and an inner coil connecting portion (216) at a lower end thereof, the inner coil bending portion (215) being inclined in a different direction from the outer coil bending portion (213), the outer coil connecting portions (214) or the inner coil connecting portions (216) of the two stator coil bodies (211) of the different stator coil groups (21) in the stator coil winding (2) being offset from each other, and the side parts of the vertical parts (212) of the stator coil bodies (211) in the same group of stator coil groups (21) are adjacently arranged, the winding gaps (22) are formed between the vertical parts (212) of the stator coil bodies (211) of two adjacent stator coil groups (21), the coil outer bending part (213) and the coil inner bending part (215) of the stator coil body (211) in the same group of stator coil groups (21) are respectively obliquely arranged towards different directions, the coil outer bending part (213) or the coil inner bending part (215) of the stator coil body (211) in two adjacent stator coil groups (21) are staggered, the coil outer bending part (213) on the stator coil body (211) in the stator coil group (21) is respectively solidified in the outer annular magnetic insulating part (42) close to one end of the vertical part (212), and the coil inner bending part (215) and the coil inner connecting part (216) on the stator coil body (211) in the stator coil group (21) are respectively solidified in the outer annular magnetic insulating part (42) And the magnetizer (31) is respectively solidified in the inner annular magnetism-isolating part (41), and is formed by overlapping a plurality of silicon steel sheets, and two sides of the magnetizer (31) respectively exceed one side of the vertical part (212) or are flush with one side of the vertical part (212).
8. An axial permanent magnet hub type motor with a non-magnetic yoke stator assembly as defined in any one of claims 1 to 7, comprising a motor housing (7), wherein the motor housing (7) is arranged on a motor shaft (6) in a circumferential direction, a stator body (1) is fixedly arranged on the motor shaft (6), rotor assemblies (8) which are rotatably arranged on the motor shaft (6) and connected with the motor housing (7) are respectively arranged on two sides of the stator body (1), the rotor assemblies (8) are in an annular sheet shape and are provided with a plurality of permanent magnets (81) in the circumferential direction close to one side of the stator body (1), and the permanent magnets (81) respectively correspond to annular magnetic guide surfaces (23) on the end surfaces of stator fixing brackets (4) of the stator body (1).
9. The axial permanent magnet hub motor according to claim 8, wherein the rotor assembly (8) comprises a magnetic steel frame (82) in an annular sheet shape and sleeved on the motor shaft (6), the magnetic steel frame (82) is circumferentially provided with a plurality of magnetic steel mounting holes (83), permanent magnets (81) are respectively arranged in the mounting holes, and one side of the magnetic steel frame (82) away from the stator body (1) is connected with the motor housing (7) through a rotor core (84) concentrically arranged with the magnetic steel frame (82) and in an annular sheet shape.
10. The axial permanent magnet hub motor according to claim 9, wherein the motor housing (7) includes two motor end covers (72) disposed on the motor shaft (6) through mounting bearings (71) and corresponding to each other, the inner side of the motor end cover (72) has an annular groove (73) for mounting the rotor core (84), a motor base (74) having a plurality of heat dissipating ribs (741) is disposed between the motor end covers (72), the motor base (74) is disposed at the circumferential periphery of the stator body (1), and the motor end cover (72) and the motor base (74) are connected by a motor mounting bolt assembly (75).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197576.3A CN112510949A (en) | 2020-10-31 | 2020-10-31 | No yoke stator module and axial permanent magnetism wheel hub formula motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197576.3A CN112510949A (en) | 2020-10-31 | 2020-10-31 | No yoke stator module and axial permanent magnetism wheel hub formula motor |
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| Publication Number | Publication Date |
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| CN112510949A true CN112510949A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011197576.3A Pending CN112510949A (en) | 2020-10-31 | 2020-10-31 | No yoke stator module and axial permanent magnetism wheel hub formula motor |
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| CN (1) | CN112510949A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904516A (en) * | 2021-11-02 | 2022-01-07 | 南京泉峰汽车精密技术股份有限公司 | Magnetic speed reducer for hub motor |
| CN114024415A (en) * | 2021-11-20 | 2022-02-08 | 重庆虎溪电机工业有限责任公司 | Integration method of speed reducer and driving motor |
-
2020
- 2020-10-31 CN CN202011197576.3A patent/CN112510949A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904516A (en) * | 2021-11-02 | 2022-01-07 | 南京泉峰汽车精密技术股份有限公司 | Magnetic speed reducer for hub motor |
| CN114024415A (en) * | 2021-11-20 | 2022-02-08 | 重庆虎溪电机工业有限责任公司 | Integration method of speed reducer and driving motor |
| CN114024415B (en) * | 2021-11-20 | 2024-03-05 | 重庆虎溪电机工业有限责任公司 | Integration method of speed reducer and driving motor |
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