CN217563401U - Permanent magnet synchronous motor with partitioned stator and matrix magnetic gathering type rotor - Google Patents

Abstract

The utility model discloses a block type stator is joined in marriage matrix and is gathered magnetism formula rotor PMSM, its technical scheme main points are: including stator and rotor core, the stator is a plurality of, the outer edge of stator is equipped with concatenation portion, the tooth's socket is established outward in concatenation portion, and is a plurality of the stator accessible concatenation portion splices into ring shape each other, rotor core and concatenation after the inner circle normal running fit of stator, along open the inside of rotor core's circumferencial direction has a plurality of mounting grooves that are used for imbedding the magnet, along open the inside of rotor core's circumferencial direction have with the staggered shielded cell of mounting groove looks, the shielded cell along the outer encirclement of rotor core's inner core, the shielded cell is used for right rotor core's inner core forms the air isolation, and the serious technical problem of the inside magnetic leakage of the tooth's socket of the axle core of aim at solution rotor core and stator.

Description

Permanent magnet synchronous motor with partitioned stator and matrix magnetic gathering type rotor

Technical Field

The utility model relates to a motor, in particular to sectional type stator distribution matrix gathers magnetism formula rotor PMSM.

Background

The inner structure of the motor mainly comprises a stator, a winding wire, a rotor core, a magnet and a rotor shaft, wherein a plurality of winding wires are wound in the stator, a plurality of magnets penetrate through the rotor core, the rotor shaft is arranged on an inner core in the rotor core, the magnets are sequentially embedded and arranged along the circumference of the rotor core, in the traditional stator installation, the stator is designed in an integrated mode, and in order to meet the requirement for winding assembly, tooth spaces are formed in the inner core of the stator, when a coil in the stator transmits a magnetic circuit, the magnetic circuit needs to pass through the tooth spaces, then the magnets in the rotor core are passed through, included angles between the two magnets in the prior art are large gaps, kinetic energy cannot be output through the included angle gaps, therefore, in the process of transmitting the magnetic circuit, part of the magnetic circuit runs off to the inside of the tooth spaces of the stator, the other part of the magnetic circuit runs off to the inner core of the rotor core, the magnetic leakage inside the tooth spaces of the shaft core of the rotor core and the tooth spaces of the stator is serious, the conversion rate of the magnetic circuit is low, the motor is low, the power density of the motor is caused, and the performance is poor, and the magnetic block type rotor stator distribution matrix is designed to solve the technical problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a block type stator is joined in marriage matrix and is gathered magnetic rotor PMSM, the inside magnetic leakage serious technical problem of tooth's socket of the axle core of aim at solution rotor core and stator.

The utility model provides a technical scheme of above-mentioned technical problem does:

the utility model provides a sectional type stator joins in marriage matrix and gathers magnetism formula rotor PMSM, includes stator and rotor core, the stator is a plurality of, the outer edge of stator is equipped with concatenation portion, the portion of splicing is opened outward and is established the tooth's socket, and is a plurality of the stator accessible concatenation portion each other and become the ring shape, rotor core and concatenation back the inner circle normal running fit of stator, along open the inside of rotor core's circumferencial direction has a plurality of mounting grooves that are used for imbedding the magnet, along open the inside of rotor core's circumferencial direction have with the staggered shielded cell of mounting groove mutually, the shielded cell along rotor core's inner core encircles outward, the shielded cell is used for right rotor core's inner core forms the air isolation.

Further, in this application embodiment, the stator is formed by installing exoskeleton, coil former and endoskeleton in proper order, just the exoskeleton the coil former with the endoskeleton makes up into the H shape, the coil former is used for the wire winding.

Further, in this application embodiment, the splice includes the concatenation skeleton, the concatenation skeleton shaping in the outer edge of exoskeleton, the vertical seting up in of tooth's socket is in the outer edge of concatenation skeleton, and is a plurality of the stator is through one side and another of concatenation skeleton the opposite side of concatenation skeleton is spliced.

Further, in this application embodiment, one side of concatenation skeleton is opened has the concatenation groove, the opposite side shaping of concatenation skeleton have with the concatenation lug of concatenation groove gomphosis.

Further, in this application embodiment, rotor core's shape is the cylinder, rotor core's outer edge is the shaping respectively has the convex surface, the convex surface surrounds rotor core's circumferencial direction is outer along equidistant setting, the cross sectional shape of isolation slot is regular pentagon.

Further, in this application embodiment, the exoskeleton is provided with a PCB wiring board, and the exoskeleton is detachably installed on the PCB wiring board.

Further, in this application embodiment, PCB wiring board has elasticity, vertical shaping has down the inserted line post under the outer skeleton, the PCB wiring board has the inserted line groove along the circumferencial direction external open, the inserted line groove with inserted line post one-to-one down, the one end of inserted line post down with inserted line groove joint.

Further, in this application embodiment, the shape of PCB wiring board is the ring shape, and it is protruding to insert under the inner frame is vertical, insert protruding lower extreme down with the inner circle of PCB wiring board is pegged graft.

Further, in this application embodiment, be equipped with respectively on the inner frame vertically and be used for fixing insert protruding and last plug wire post on the stator.

The utility model discloses following beneficial effect has:

stator through the concatenation formula, tooth's socket and isolating groove, make when stator and rotor core assemble, the stator splices along rotor core's outer edge through concatenation portion, the tooth's socket sets up outside concatenation portion, make the tooth's socket not correspond with rotor core's outer edge, and set up the isolating groove staggered mutually with the mounting groove along circumferencial direction's inside at rotor core, make contained angle clearance fill through the isolating groove between two magnets, because the magnetic permeability of air is the minimum, a plurality of isolating grooves enclose the air isolation that has formed magnetic field around rotor core's inner core, form the magnetic field air isolation of magnet, thereby avoid the in-process of magnetic circuit transmission, the magnetic circuit reveals from rotor core's inner core and stator's tooth's socket from the magnetic circuit, improve the conversion rate of magnetic circuit, also improve the power density and the performance of motor.

Drawings

Fig. 1 is a schematic structural diagram of a permanent magnet synchronous motor with a segmented stator and a matrix magnetic convergence type rotor according to an embodiment of the present application.

Fig. 2 is a schematic mounting diagram of a stator and a rotor provided in an embodiment of the present application.

Fig. 3 is a top view of a stator provided in an embodiment of the present application.

Fig. 4 is a top view of a rotor provided in an embodiment of the present application.

Fig. 5 is a schematic splicing diagram of a stator provided in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of an exoskeleton and an endoskeleton provided in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of an upper plug wire column and an upper plug wire column provided in an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a splicing bump and a splicing groove provided in an embodiment of the present application.

Wherein, the reference numbers:

100. a stator; 110. an outer skeleton; 120. an inner skeleton; 130. a bobbin; 140. an upper wire column is inserted; 150. a lower wire column; 160. a PCB wiring board; 161. a wire inserting groove; 170. a splice; 171. splicing grooves; 172. splicing the bumps; 173. splicing the frameworks; 174. a tooth socket; 180. an upper insertion bulge; 190. downward inserting protrusions; 200. a rotor core; 210. mounting grooves; 220. an isolation trench; 230. a convex surface; 240. a magnet.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically, electrically or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 4, a block-type stator-matrix magnetic-gathering rotor permanent magnet synchronous motor includes a plurality of stators 100 and a plurality of rotor cores 200, the plurality of stators 100 are provided with a plurality of splicing portions 170 on the outer edge of the stators 100, the splicing portions 170 are provided with tooth slots 174 on the outer side, the plurality of stators 100 can be spliced into a circular ring shape by the splicing portions 170, the rotor cores 200 are rotatably fitted with the inner rings of the spliced stators 100, a plurality of mounting grooves 210 for embedding magnets 240 are provided inside along the circumferential direction of the rotor cores 200, isolation grooves 220 staggered from the mounting grooves 210 are provided inside along the circumferential direction of the rotor cores 200, the isolation grooves 220 surround the outer sides of the inner cores of the rotor cores 200, and the isolation grooves 220 are used for isolating the inner cores of the rotor cores 200 from air.

Through the technical scheme, when the stator 100 is assembled with the rotor core 200, the stator 100 is spliced along the outer edge direction of the rotor core 200 through the splicing part 170, the tooth space 174 is arranged outside the splicing part 170, so that the tooth space 174 is not corresponding to the outer edge of the rotor core 200 and is directly exposed outside the splicing part 170, the assembly of winding is met, and the transmission of a magnetic circuit is not influenced, the isolation grooves 220 staggered with the mounting grooves 210 are arranged inside the rotor core 200 along the circumferential direction, so that the included angle gap between the two magnets 240 is filled through the isolation grooves 220, because the magnetic permeability of air is the lowest, the isolation grooves 220 surround the inner core of the rotor core 200 to form air isolation of the magnetic field, the process of magnetic circuit transmission is avoided, the magnetic circuit leaks from the inner core of the rotor core 200 and the tooth space 174 of the stator 100, the conversion rate of the magnetic circuit is improved, and the power density and performance of the motor are also improved.

Referring to fig. 6 to 8, in some embodiments, the stator 100 is formed by sequentially mounting an outer frame 110, a bobbin 130, and an inner frame 120, the outer frame 110, the bobbin 130, and the inner frame 120 are integrally formed, and the outer frame 110, the bobbin 130, and the inner frame 120 are combined into an H shape, the outer frame 110 and the inner frame 120 are respectively vertically disposed, the bobbin 130 is transversely disposed, the bobbin 130 is used for winding, cross sections of the outer frame 110 and the inner frame 120 are arc-shaped, and a concave surface faces an outer edge of the rotor core 200.

Through the technical scheme, outer frame 110, coil former 130 and inner frame 120 make up into the H shape, outer frame 110, coil former 130 and inner frame 120 integrated into one piece, thereby let material utilization promote 23%, after coil former 130 wire winding, can surround rotor core 200's outer edge concatenation through polylith stator 100, single coil former 130 can be adjusted according to the winding number of turns of adjacent coil former 130, the adjacent wire-wound clearance of controllable regulation, thereby wire-wound groove filling rate has been improved, and reduce adjacent wire winding clearance, reach no slot seam installation.

Referring to fig. 5 to 8, in some embodiments, the splicing part 170 includes splicing ribs 173, the splicing ribs 173 have an arc-shaped cross section, the splicing ribs 173 are formed on the outer edge of the outer frame 110, the tooth grooves 174 are vertically formed on the outer edge of the splicing ribs 173, and the plurality of stators 100 are spliced to the other side of another splicing rib 173 through one side of one splicing rib 173.

Referring to fig. 5 to 8, in some embodiments, a splicing groove 171 is formed on one side of the splicing frame 173, a splicing protrusion 172 engaged with the splicing groove 171 is formed on the other side of the splicing frame 173, a cross section of the splicing protrusion 172 is shaped like a ridge, and a shape of the splicing groove 171 matches a shape of the splicing protrusion 172.

Through the technical scheme, the splicing convex block 172 at one side of the splicing frameworks 173 can be embedded into the splicing groove 171 of another splicing framework 173, so that the mounting positions between the splicing frameworks 173 are preliminarily positioned, and the splicing frameworks 173 can be spliced into a complete circular ring shape.

Referring to fig. 4, in some embodiments, rotor core 200 is shaped like a cylinder, convex surfaces 230 are respectively formed on outer edges of rotor core 200, a side of convex surface 230 facing is arc-shaped, convex surfaces 230 are disposed around outer edges of rotor core 200 in a circumferential direction at equal intervals, and a cross-sectional shape of isolation groove 220 is a regular pentagon.

Through the technical scheme, the rotor core 200 is provided with the convex surface 230 in the circumference, so that the torque of the tooth space 174 can be eliminated, the magnetic flux leakage rate is reduced by 10%, when the rotor core 200 rotates around the inner rings of the stators 100, the convex surface 230 is firstly transmitted with the magnetic circuit, and when the rotor core rotates rapidly, the gap space between the rotor core 200 and the inner rings of the stators 100 is rapidly cut, the magnetic circuit in the gap is transmitted into the magnets 240, the convex surface 230 cuts air, the torque of the tooth space 174 is further eliminated, the eddy current noise generated by wind resistance is reduced, resonance is reduced, when the magnetic circuit is transmitted to the included angle gap of the magnets 240, the isolation groove 220 is utilized, so that the included angle gap between the two magnets 240 is filled, the shape of the regular pentagon is better matched with the shape of the included angle gap between the two magnets 240, and the magnetic circuit included angle is greatly leaked into the inner core of the rotor core 200 from the gap in the process of magnetic circuit transmission.

Referring to fig. 5, in some embodiments, a PCB terminal block 160 is provided under the outer frame 110, and the outer frame 110 is detachably mounted on the PCB terminal block 160.

Referring to fig. 5, in some embodiments, the PCB terminal block 160 has elasticity, the lower frame 110 is vertically formed with the lower plug wire posts 150, the PCB terminal block 160 is externally opened with plug wire slots 161 along the circumferential direction, the plug wire slots 161 correspond to the lower plug wire posts 150 one by one, and one ends of the lower plug wire posts 150 are engaged with the plug wire slots 161.

Through the technical scheme, after the splicing lug 172 of the splicing framework 173 is embedded and positioned in the splicing groove 171 of the other splicing framework 173, because the PCB wiring board 160 has elasticity, when the lower plug wire post 150 is inserted into the plug wire groove 161 of the PCB wiring board 160, the lower end of the lower plug wire post 150 is clamped by the plug wire groove 161, the position of the lower plug wire post 150 is fixed, and therefore the positioned splicing framework 173 is fixed.

Referring to fig. 5, in some embodiments, the PCB terminal block 160 has a circular ring shape, and a lower insertion protrusion 190 is vertically disposed below the inner frame 120, the lower insertion protrusion 190 having a shape matching the shape of the inner ring of the PCB terminal block 160, and a lower end of the lower insertion protrusion 190 is inserted into the inner ring of the PCB terminal block 160.

Through the technical scheme, the location of further reinforcing concatenation skeleton 173, consequently vertically be equipped with under inner frame 120 with PCB wiring board 160's inner circle shape matching insert protruding 190 down, after inner frame 120 encloses into the orbicular, insert protruding 190 down and can enclose into the orbicular that the diameter ratio is less of PCB wiring board 160's inner circle, consequently enclose into the orbicular insert protruding 190 down can match insert the inner circle of PCB wiring board 160 and fix a position, avoid inner frame 120's mounted position skew.

Referring to fig. 5, in some embodiments, the inner frame 120 is vertically provided with an upper insertion protrusion 180 and an upper insertion post 140 for fixing the stator 100, respectively.

Through the technical scheme, in order to further enhance the stability of the stator 100, the inner frame 120 is provided with the upper insertion protrusion 180 and the upper plug wire column 140, the upper insertion protrusion 180 is positioned through the PCB wiring board 160 with the similar structure, and the upper plug wire column 140 can be clamped with the plug wire slot 161 of the PCB wiring board 160 with the similar structure, so that the block structure of the stator 100 is further fixed, and the stability of the plurality of stators 100 is enhanced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims (9)

1. The utility model provides a sectional type stator joins in marriage matrix and gathers magnetism formula rotor PMSM, includes stator and rotor core, its characterized in that, the stator is a plurality of, the outer edge of stator is equipped with concatenation portion, the portion of splicing is opened outward and is established the tooth's socket, and is a plurality of the stator accessible concatenation portion splices into the ring shape each other, rotor core and concatenation back the inner circle normal running fit of stator, along open the inside of rotor core's circumferencial direction has a plurality of mounting grooves that are used for embedding magnet, along open the inside of rotor core's circumferencial direction have a plurality ofly with the staggered shielded cell of mounting groove mutually, the shielded cell along the outer encirclement of rotor core, the shielded cell is used for right rotor core's inner core forms the air isolation.

2. The rotor PMSM of claim 1, wherein the stator is formed by sequentially mounting an outer frame, a coil frame and an inner frame, and the outer frame, the coil frame and the inner frame are combined into an H shape, and the coil frame is used for winding.

3. The permanent magnet synchronous motor of claim 2, wherein the splicing portion comprises a splicing framework, the splicing framework is formed on the outer edge of the outer framework, the tooth grooves are vertically formed in the outer edge of the splicing framework, and the plurality of stators are spliced through one side of one splicing framework and the other side of the other splicing framework.

4. The block type stator and matrix magnetic concentration type rotor permanent magnet synchronous motor according to claim 3, wherein a splicing groove is formed in one side of the splicing framework, and a splicing lug embedded with the splicing groove is formed in the other side of the splicing framework.

5. The rotor permanent magnet synchronous motor of claim 2, wherein the rotor core is cylindrical, the outer edges of the rotor core are respectively formed with convex surfaces, the convex surfaces are arranged around the outer edges of the rotor core at equal intervals in the circumferential direction, and the cross section of each isolation slot is a regular pentagon.

6. The permanent magnet synchronous motor of claim 4, wherein a PCB wiring board is arranged below the outer frame, and the outer frame is detachably mounted on the PCB wiring board.

7. The permanent magnet synchronous motor of claim 6, wherein the PCB wiring board has elasticity, a lower plug wire column is vertically formed under the outer frame, the PCB wiring board is externally provided with plug wire slots along the circumferential direction, the plug wire slots are in one-to-one correspondence with the lower plug wire column, and one end of the lower plug wire column is clamped with the plug wire slots.

8. The permanent magnet synchronous motor of claim 7, wherein the PCB wiring board is in the shape of a circular ring, a lower insertion protrusion is vertically arranged below the inner frame, and the lower end of the lower insertion protrusion is inserted into the inner ring of the PCB wiring board.

9. The permanent magnet synchronous motor of claim 8, wherein the inner frame is vertically provided with an upper insertion protrusion and an upper insertion post for fixing the stator.

Images