CN114696561A - Disk type motor - Google Patents
Disk type motor Download PDFInfo
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- CN114696561A CN114696561A CN202210325683.2A CN202210325683A CN114696561A CN 114696561 A CN114696561 A CN 114696561A CN 202210325683 A CN202210325683 A CN 202210325683A CN 114696561 A CN114696561 A CN 114696561A
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- fixing frame
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- stator
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- 238000003475 lamination Methods 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000006247 magnetic powder Substances 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
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- 239000000243 solution Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
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- 239000003822 epoxy resin Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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- 238000005215 recombination Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/42—Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The application discloses disc motor includes: a rotor disk; a stator disc, which is arranged in a lamination way with the rotor disc and has an air gap with the rotor disc; wherein the stator disk comprises a plurality of discrete stator teeth and a fixture to which the discrete stator teeth are fixed, the fixture not overlapping or slightly overlapping the air gap in a direction perpendicular to the rotor disk and the stator disk. When the fixing frame fixes the discrete stator teeth, the fixing frame can not enter or slightly enter the air gap between the stator disc and the rotor disc, namely, in the direction perpendicular to the rotor disc and the stator disc, the fixing frame and the air gap have no overlapping part or less overlapping part, so that the condition that extra eddy current loss is generated due to the distribution of the fixing frame in the air gap is almost avoided, and the working performance of the disc type motor can be further improved.
Description
Technical Field
The application relates to the technical field of motors, in particular to a disc type motor.
Background
Disc motors are widely used in household appliances and industrial drive motors in their flattened form and high torque density. One of the difficulties in manufacturing the disc motor is the design and processing of the stator disc, especially when the stator is a discrete tooth, an auxiliary structure is required to perform precise positioning of the stator tooth.
At present, a fixing piece of a stator disc for fixing and positioning a plurality of discrete stator teeth generally realizes the fixation of the discrete stator teeth by being arranged on two sides of the discrete stator teeth, which can affect the working performance of the disc motor, such as extra eddy current loss, or low positioning accuracy, poor heat dissipation effect, and the like.
Disclosure of Invention
In view of this, the present application provides a disc motor, which can improve the working performance thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a disc motor comprising:
a rotor disk;
a stator disc, which is arranged in a lamination way with the rotor disc and has an air gap with the rotor disc;
wherein,
the stator disk comprises a plurality of discrete stator teeth and a fixture to hold the discrete stator teeth, the fixture not overlapping or slightly overlapping the air gap in a direction perpendicular to the rotor disk and the stator disk.
Optionally, in the disc motor, the fixing frame is a metal frame formed by finish machining.
Optionally, in the disc motor, the plurality of discrete stator teeth are circumferentially distributed, and the fixing frame includes:
the inner ring fixing frame is arranged on the inner side of the circumference and is connected with all the discrete stator teeth;
the outer ring fixing frame is arranged on the outer side of the circumference and is connected with all the discrete stator teeth;
wherein,
the inner ring fixing frame and the outer ring fixing frame are arranged independently and are matched with each other to fix all the discrete stator teeth.
Optionally, in the disc motor, the inner ring fixing frame and the outer ring fixing frame are both provided with a positioning structure, and the positioning structure positions the discrete stator teeth in the axial direction, the radial direction and the circumferential direction of the stator disc.
Optionally, in the disc motor, the positioning structure includes:
a stationary slot opening to the discrete stator teeth and for positioning the discrete stator teeth in the axial direction and the radial direction;
stationary teeth located at an opening of the stationary slot and protruding toward the discrete stator teeth, the stationary teeth for positioning the discrete stator teeth in the circumferential direction.
Optionally, in the disc motor, the inner ring fixing frame and/or the outer ring fixing frame are formed by splicing a plurality of split bodies, and the split bodies are spliced in the axial direction or the radial direction of the stator disc.
Optionally, in the disc motor, the discrete stator teeth include:
the iron core is provided with an axial positioning surface, a radial positioning surface and a circumferential positioning surface which are matched with the fixing frame;
and the coil is wound on the iron core and avoids the axial positioning surface, the radial positioning surface and the circumferential positioning surface.
Optionally, in the disc motor, the iron core is formed by laminating multiple layers of silicon wafers or by magnetic powder die-casting, and the axial positioning surface and the radial positioning surface are cutting surfaces of edges and corners of the iron core.
Optionally, in the disk motor, the stator discrete teeth are rectangular teeth or sector teeth.
Optionally, in the disc motor, the fixing frame is a non-metal frame.
The disk motor provided by the application uses the fixing frame to fix the discrete stator teeth, and when the fixing frame fixes the discrete stator teeth, the fixing frame can not enter into the air gap between the stator disk and the rotor disk, or the entering amount is very small, namely in the direction perpendicular to the rotor disk and the stator disk, the fixing frame and the air gap are not overlapped or are only overlapped in a small amount, so that the condition that extra eddy current loss is generated due to the distribution of the fixing frame in the air gap is almost avoided, and the working performance of the disk motor can be further improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an assembly view of a rotor disc, a stator disc and a rotating shaft of a disc motor provided in an embodiment of the present invention;
FIG. 2 is an assembly view of the stator plate;
FIG. 3 is an exploded view of the stator plate;
FIG. 4 is an exploded view of a stator plate of another construction;
FIG. 5 is an exploded view of a stator plate of yet another construction;
FIG. 6 is a schematic view of a structure of discrete stator teeth;
FIG. 7 is a schematic structural view of a core;
FIG. 8 is a schematic view of another configuration of discrete stator teeth;
fig. 9 is a schematic structural view of a core of another structure.
In fig. 1-9:
1-rotor disc, 2-stator disc, 3-rotating shaft;
21-discrete stator teeth, 22-fixed frame;
211-iron core, 212-coil, 221-inner ring fixing frame, 222-outer ring fixing frame;
2111-axial positioning face, 2112-radial positioning face, 2113-circumferential positioning face, 2211-inner ring groove, 2212-inner ring tooth, 2213-inner ring opening edge, 2214-inner ring side wall, 2215-third axial split, 2216-fourth axial split, 2217-inner ring bottom wall, 2221-outer ring groove, 2222-outer ring tooth, 2223-outer groove opening edge, 2224-outer ring side wall, 2225-first axial split, 2226-second axial split, 2227-first radial split, 2228-second radial split, 2229-outer ring bottom wall.
Detailed Description
The application provides a disk motor, can make its working property obtain promoting.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
As shown in fig. 1 to 9, the present embodiment provides a disk type electric machine, which mainly includes a rotor disk 1 and a stator disk 2, the rotor disk 1 is fixedly disposed on a rotating shaft 3 of the disk type electric machine, the stator disk 2 and the rotor disk 1 are stacked, that is, the stator disk 2 and the rotor disk 1 are both disposed perpendicular to the rotating shaft 3, and an air gap exists between the two to ensure normal operation of the stator disk 2 and the rotor disk 1; the stator disc 2 mainly includes a plurality of discrete stator teeth 21 and a fixing frame 22 for fixing the discrete stator teeth 21, and the fixing frame 22 can hold the different discrete stator teeth 21 at fixed relative positions while fixing the single discrete stator tooth 21, for example, the plurality of discrete stator teeth 21 are distributed circumferentially; more importantly, the fixing frame 22, while achieving the fixing of the separate stator teeth 21, does not overlap or overlaps only a small amount of the fixing frame 22 with the air gap in a direction perpendicular to the rotor disc 1 and the stator disc 2, i.e.: in one case, the fixed frame 22 does not enter the air gap between the rotor disc 1 and the stator disc 2, the fixed frame 22 is outside the main magnetic circuit of the disc motor; alternatively, the fastening frame 22 projects into the air gap by a small amount, i.e. there is only a small overlap of the fastening frame 22 and the air gap, which "small amount" has a value in the range of not more than 5% of the radial dimension of the rotor disk 1. Therefore, the area of the fixed frame 22 and the rotor disc 1 which are not overlapped or overlapped in the axial direction is small, so that the interference of the fixed frame 22 to a magnetic field is avoided, extra eddy current loss is avoided, and the working performance of the disc motor can be improved.
In the present application, the holder 22 is further made as a finish-formed metal holder. The reason why the fixing frame 22 made of metal is selected is that, on the premise that the fixing frame 22 does not enter the air gap or a small amount of air gaps enter the air gap, even if the fixing frame 22 is made of metal with magnetic conductivity, the disc motor can have no extra eddy current loss or only have small extra eddy current loss, and the performance of the disc motor cannot be affected. Moreover, the fixing frame 22 made of a metal material can be formed in a finish machining mode, so that the processing precision of the fixing frame 22 is high, and the fixing frame can be better matched with the discrete stator teeth 21, and compared with the fixing frame 22 which is injection-molded by using an auxiliary tool (such as a die) in the prior art, the fixing frame 22 made of a metal material (the auxiliary tool needs to be removed after the fixing frame 22 is formed, so that the discrete stator teeth 21 are likely to be displaced), the fixing frame 22 made of a metal material can obviously improve the positioning precision of the discrete stator teeth 21.
In addition, because the metal has good heat conductivility, so use the mount 22 of metal material to fix discrete stator tooth 21, can also improve the radiating effect of stator dish 2 to because the metal is bigger than non-metallic structural strength, so use the mount 22 of metal material can also promote the structural strength of stator dish 2, thereby make stator dish 2 can directly be connected with disc motor's shell or bearing, provide convenience for the complete machine assembly. Meanwhile, the metal fixing frame 22 is convenient to process, so that the processing cost is reduced.
In the case that the fixing frame 22 is made of a metal material, in order to further improve the working performance of the disc motor and reduce the extra eddy current loss, the fixing frame 22 is preferably made of a metal material with low magnetic permeability and high resistivity, and further made of an aluminum alloy, a nonmagnetic stainless steel, or the like.
Alternatively, the fixing frame 22 in the present application may also be a non-metal frame, that is, the material of the fixing frame 22 may also be non-metal, such as epoxy resin, plastic, or ceramic, and the fixing frame 22 made of such material can also avoid the excessive additional eddy current loss generated by the disc motor while realizing the fixation of the discrete stator teeth 21.
On the basis of the circumferential distribution of the plurality of discrete stator teeth 21, the specific structure of the fixing frame 22 may be chosen on the premise that the fixing frame 22 is not distributed in the air gap or distributed in a small amount, and in an alternative structure, as shown in fig. 2 to 5, the fixing frame 22 includes: an inner ring fixture 221 disposed inside the circumference and connected to all of the discrete stator teeth 21; an outer ring mount 222 disposed outside the circumference and connected to all of the discrete stator teeth 21; the inner ring fixing frame 221 and the outer ring fixing frame 222 are arranged independently, and are matched with each other to fix all the discrete stator teeth 21. In this configuration, inner ring fixture 221 secures discrete stator teeth 21 inside of them, and the outer ring holder 222 holds the individual stator teeth 21 on the outer side thereof, and by fitting with each other, holds and connects all the individual stator teeth 21, and the connection between the inner ring holder 221 and the outer ring holder 222 is made by means of the discrete stator teeth 21, i.e. there are no other connecting structures of the fixture 22 between the two fixtures 22 (i.e. in the distribution area of the discrete stator teeth 21), since the air gap of the disc motor and the distribution area of the rotor magnets and the rotation area of the rotor magnets all axially overlap with the distribution area of the individual stator teeth 21, the inner ring mount 221 and the outer ring mount 222, which are located outside the distribution area of the discrete stator teeth 21, do not overlap the air gap and the rotor magnet distribution area, the rotor magnet rotation area, thereby reducing or avoiding additional eddy current losses.
The fixing frame 22 that fixes the separate stator teeth 21 simultaneously by using the inner and outer double rings can improve positioning accuracy and fixing firmness for the separate stator teeth 21, and therefore, it is a preferable configuration in the present application. In addition, the fixing frame 22 may have another structure, such as a single-sided ring structure, that is, in the case where the fixing requirement for the separate stator teeth 21 is satisfied, the fixing frame 22 may have only the inner ring fixing frame 221 or the outer ring fixing frame 222, and the like.
The inner ring fixing frame 221 and the outer ring fixing frame 222 are provided with positioning structures, and the positioning structures realize positioning of the discrete stator teeth 21 in the axial direction, the radial direction and the circumferential direction of the stator disc 2. In the prior art, in consideration of the influence on the performance of the disc motor, the fixing frame 22 for fixing the discrete stator teeth 21 is generally made of a non-metal material, and the fixing frame 22 is generally formed by injection molding and the positioning of the discrete stator teeth 21 is realized, because an injection mold needs to be used in the injection molding process and occupies a certain space, after the fixing frame 22 is formed and the injection mold is removed, a gap is formed between the discrete stator teeth 21 and the fixing frame 22 by the space originally occupied by the injection mold, so that the discrete stator teeth 21 have a movable space, and the injection molded fixing frame 22 cannot realize the precise positioning of the discrete stator teeth 21 in the direction (i.e., the axial direction) perpendicular to the stator disc 2. And the mount 22 of metal material in this application can adopt the finish machining mode to process out location structure, because the finish machining precision is very high, so can make the location structure that processes out better match with discrete stator tooth 21, avoided the existence in removal space to can show the improvement to the location precision of discrete stator tooth 21. And this application makes location structure all fix a position the standing stator tooth 21 in axial, radial and circumference for the fixed effect of furthest's improvement to standing stator tooth 21 under the prerequisite that machining precision can guarantee to realize all-round location to standing stator tooth 21, make disc motor's working property and production quality all promoted.
As shown in fig. 3 to 5, the positioning structure includes: a fixation slot opening towards the discrete stator teeth 21 and for positioning the discrete stator teeth 21 in an axial and radial direction; and fixing teeth located at an opening of the fixing groove and provided to protrude toward the individual stator teeth 21, the fixing teeth being for positioning the individual stator teeth 21 in a circumferential direction. Specifically, for the inner ring fixing frame 221, since the discrete stator teeth 21 are located on the outer side thereof, the opening of the fixing groove (for convenience of distinction, the fixing groove provided on the inner ring fixing frame 221 is referred to as an inner ring groove 2211) faces the radial outer side thereof, the depth direction of the inner ring groove 2211 is the radial direction of the inner ring fixing frame 221, and the fixing teeth (for convenience of distinction, the fixing teeth provided on the inner ring fixing frame 221 is referred to as inner ring teeth 2212) also extend radially outward at the opening of the inner ring groove 2211; for the outer ring fixing frame 222, since the discrete stator teeth 21 are located on the inner side thereof, the opening of the fixing groove (for the sake of distinction, the fixing groove provided on the outer ring fixing frame 222 is referred to as an outer ring groove 2221) faces the radial inner side thereof, the depth direction of the outer ring groove 2221 is the radial direction of the outer ring fixing frame 222, that is, the inner ring groove 2211 and the outer ring groove 2221 are two grooves arranged oppositely, and the fixing teeth (for the sake of distinction, the fixing teeth provided on the outer ring fixing frame 222 are referred to as outer ring teeth 2222) extend to the radial inner side at the opening of the outer ring groove 2221, that is, the outer ring teeth 2222 and the inner ring teeth 2212 are arranged oppositely. During assembly, with one end of the discrete stator teeth 21 entering the inner ring slot 2211, the inner slot opening edge 2213 of the inner ring slot 2211 abuts the discrete stator teeth 21 to position the discrete stator teeth 21 in the radial direction of the stator plate 2, and the two inner ring side walls 2214 (the wall surfaces arranged in the radial direction of the inner ring fixing frame 221) of the inner ring slot 2211 clamp the discrete stator teeth 21 to position the discrete stator teeth 21 in the axial direction of the stator plate 2; the other end of the discrete stator tooth 21 enters the outer ring groove 2221, the outer groove opening edge 2223 of the outer ring groove 2221 abuts the discrete stator tooth 21 to position the discrete stator tooth 21 in the radial direction of the stator disc 2 (i.e., the opening edge of the outer ring groove 2221 and the opening edge of the inner ring groove 2211 cooperate to clamp the discrete stator tooth 21 in the radial direction), and the two outer ring sidewalls 2224 (the wall surfaces disposed in the radial direction of the outer ring fixing frame 222) of the outer ring groove 2221 clamp the discrete stator tooth 21 to position the discrete stator tooth 21 in the axial direction of the stator disc 2; at the same time, two adjacent inner ring teeth 2212 and two adjacent outer ring teeth 2222 clamp two ends of the same discrete stator tooth 21, respectively, so that the discrete stator teeth 21 are positioned in the circumferential direction of the stator disc 2.
In the above structure, the specific structure of the fixing groove may be an annular groove provided in the circumferential direction of the inner ring holder 221 and the outer ring holder 222, as shown in fig. 3 to 5; it is also possible to have a plurality of rectangular grooves (the fixing grooves of this structure are not shown in the drawings), each of which can accommodate only the end of one of the individual stator teeth 21, all of which are uniformly distributed in the circumferential direction of the inner ring holder 221 and the outer ring holder 222 and correspond one-to-one to all of the individual stator teeth 21.
In the present application, as shown in fig. 3 to 5, the inner ring fixing frame 221 and/or the outer ring fixing frame 222 are also formed by splicing a plurality of split bodies, and the plurality of split bodies are spliced in the axial direction and/or the radial direction of the stator disc 2. The inner ring fixing frame 221 and/or the outer ring fixing frame 222 are/is formed by splicing a plurality of split bodies, so that convenience is provided for assembling the fixing frame 22 and the discrete stator teeth 21, and the specific arrangement mode can be that one of the inner ring fixing frame 221 and the outer ring fixing frame 222 is formed by splicing a plurality of split bodies, and the other is an integrated structure without splicing; or the inner ring fixing frame 221 and the outer ring fixing frame 222 are formed by splicing a plurality of split bodies. The splicing mode may include axial splicing and radial splicing, when one of the inner ring fixing frame 221 and the outer ring fixing frame 222 is spliced and molded, and the other one does not need to be spliced, one of the inner ring fixing frame and the outer ring fixing frame can adopt an axial splicing mode, and can also adopt a radial splicing mode; when the inner ring fixing frame 221 and the outer ring fixing frame 222 are required to be spliced, the inner ring fixing frame 221 and the outer ring fixing frame 222 may be axially spliced, or may be radially spliced, or one of the inner ring fixing frame 221 and the outer ring fixing frame 222 may be axially spliced, and the other one may be radially spliced.
During specific assembly, as shown in fig. 3, when the inner ring fixing frame 221 is an integral structure and the outer ring fixing frame 222 adopts a structure in which two axial split bodies (i.e., a first axial split body 2225 and a second axial split body 2226) are axially spliced, the inner ring fixing frame 221 and the second axial split body 2226 of the outer ring fixing frame 222 are coaxially arranged, then one end of each of the discrete stator teeth 21 is inserted into the inner ring groove 2211, the other end of each of the discrete stator teeth 21 is placed into the groove of the first axial split body 2225 (the groove is a partial structure of the outer ring groove 2221, and the other partial structure of the outer ring groove 2221 is placed on the second axial split body 2226), and after all the discrete stator teeth 21 are placed, the first axial split body 2225 is axially moved to be spliced with the second axial split body 2226, and at this time, the discrete stator teeth 21 are fixed between the inner ring fixing frame 221 and the outer ring fixing frame 222; as shown in fig. 4, when the outer ring fixing frame 222 is an integral structure, and the inner ring fixing frame 221 is axially assembled by two axial split bodies (i.e. the third axial split body 2215 and the fourth axial split body 2216), the outer ring fixing frame 222 and the third axial split body 2215 of the inner ring fixing frame 221 are coaxially arranged, then one end of each of the discrete stator teeth 21 is inserted into the outer ring slot 2221, the other end of each of the discrete stator teeth 21 is placed into the groove of the third axial split body 2215 (the groove is a part of the inner ring slot 2211, and the other part of the inner ring slot 2211 is arranged on the fourth axial split body 2216), after all the discrete stator teeth 21 are placed, the fourth axial split body 2216 is axially moved to be assembled with the third axial split body 2215, and at this time, the discrete stator teeth 21 are fixed between the inner ring fixing frame 221 and the outer ring fixing frame 222; as shown in fig. 5, when the inner ring fixing frame 221 is an integral structure and the outer ring fixing frame 222 adopts a structure in which two radial split bodies (i.e. the first radial split body 2227 and the second radial split body 2228) are radially spliced, one end of all the discrete stator teeth 21 is inserted into the inner ring slot 2211, the first radial split 2227 is radially close to the inner ring fixing frame 221, and the other ends of the partially separated stator teeth 21 corresponding to the first radial division body 2227 are inserted into the outer ring grooves 2221 of the first radial division body 2227 in the approaching process, after the first radial split 2227 is moved into position, the second radial split 2228 is moved radially closer to the inner ring fixing frame 221 from the opposite direction, and the other ends of the partial separate stator teeth 21 corresponding to the second radial division body 2228 are inserted into the outer ring grooves 2221 of the second radial division body 2228 in the approaching process, and as the second radial division body 2228 is moved into position, the second radial division body 2228 is spliced with the first radial division body 2227.
Specifically, the different split bodies may be connected by various structures, for example, an insertion structure which is illustrated in fig. 3 to 5 and is formed by an insertion block and an insertion slot, or may be a snap-fit structure, a threaded connection structure, or the like.
In addition, the inner ring fixing frame 221 and the outer ring fixing frame 222 may also be assembled with the discrete stator teeth 21 in other manners, for example, the inner ring fixing frame 221 is made to be an elastic structure, which may be expanded or restored from a contracted state to increase its diameter to assemble with the discrete stator teeth 21; the outer ring fixture may be reduced in diameter by itself by tightening or returning from the expanded state to achieve assembly with the discrete stator teeth 21.
As shown in fig. 6 and 8, the discrete stator teeth 21 in the present application include: an iron core 211 having an axial positioning surface 2111, a radial positioning surface 2112, and a circumferential positioning surface 2113 that cooperate with the holder 22; and a coil 212 wound around the core 211 and avoiding the axial positioning surface 2111, the radial positioning surface 2112, and the circumferential positioning surface 2113. In order to improve the assembly precision with the fixing frame 22, an axial positioning surface 2111, a radial positioning surface 2112 and a circumferential positioning surface 2113 are specially arranged on the iron core 211, wherein the axial positioning surface 2111 is used for being jointed with the inner ring side wall 2214 or the outer ring side wall 2224 to realize precise positioning in the axial direction, the radial positioning surface 2112 is used for being jointed with the inner groove opening edge 2213 and the outer groove opening edge 2223 to realize precise positioning in the radial direction, and two parallel circumferential positioning surfaces 2113 on each iron core 211 are used for being jointed with two inner ring teeth 2212 or outer ring teeth 2222 which are adjacently arranged and located at two sides of each discrete stator tooth 21 to realize precise positioning in the circumferential direction.
Further, in order to further improve the fixing firmness of the discrete stator teeth 21, as shown in fig. 6 and 8, the top surface of the coil 212 is flush with the axial positioning surface 2111, so that the fitting area of the discrete stator teeth 21 with the inner ring side wall 2214 and the outer ring side wall 2224 can be increased, and the axial positioning can be more accurate.
Moreover, the depth of the fixing groove may be equal to the sum L of the widths of the axial positioning surface 2111 and the top surface of the coil 212, so that when one end of the discrete stator tooth 21 enters the inner ring groove 2211 or the outer ring groove 2221, not only the radial positioning surface 2112 abuts against the opening edge of the inner ring groove 2211 or the opening edge of the outer ring groove 2221, but also the side surface of the coil 212 abuts against the inner ring bottom wall 2217 (the wall surface disposed in the axial direction of the inner ring fixing frame 221) of the inner ring groove 2211 or the outer ring bottom wall 2229 (the wall surface disposed in the axial direction of the outer ring fixing frame 222) of the outer ring groove 2221, so that the contact area between the discrete stator tooth 21 and the inner ring fixing frame 221 and the outer ring fixing frame 222 is larger, and the radial positioning can be more accurate.
The iron core 211 is formed by laminating multiple layers of silicon wafers or by magnetic powder die casting, and the axial positioning surface 2111 and the radial positioning surface 2112 are cutting surfaces of corners of the iron core 211, as shown in fig. 7 or fig. 9. The iron core 211 can be formed by laminating multiple layers of silicon wafers, and the method has the advantages of mature process, low processing cost and easy realization of batch production; alternatively, the magnetic powder can be molded by magnetic powder casting. The axial location surface 2111 and the radial location surface 2112 are formed in a manner that the corner positions of the formed iron core 211 are cut, and two planes with an included angle of 90 degrees are the axial location surface 2111 and the radial location surface 2112. And the circumferential locating surface 2113 is a portion of the core side surface.
The coil 212 may be formed by winding a round wire or a flat wire enamel wire around the peripheral side of the core 211.
Specifically, the shape of the stator discrete teeth in the present application can be flexibly selected according to the magnetic path structure on the basis of providing the axial positioning surface 2111, the radial positioning surface 2112 and the circumferential positioning surface 2113, and may be, for example, rectangular teeth or sector teeth.
The components, devices referred to in this application are meant as illustrative examples only and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the drawings. These components, devices may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably herein. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".
It should also be noted that in the apparatus of the present application, the components may be disassembled and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.
The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modifications, equivalents and the like that are within the spirit and principle of the present application should be included in the scope of the present application.
Claims (10)
1. A disc motor, comprising:
a rotor disk;
a stator disc, which is arranged in a lamination way with the rotor disc and has an air gap with the rotor disc;
wherein,
the stator disk comprises a plurality of discrete stator teeth and a fixture to hold the discrete stator teeth, the fixture not overlapping or slightly overlapping the air gap in a direction perpendicular to the rotor disk and the stator disk.
2. The disc motor according to claim 1, wherein the fixing frame is a finish-formed metal frame.
3. The disc motor of claim 1, wherein the plurality of discrete stator teeth are circumferentially distributed, the stator frame comprising:
the inner ring fixing frame is arranged on the inner side of the circumference and is connected with all the discrete stator teeth;
the outer ring fixing frame is arranged on the outer side of the circumference and is connected with all the discrete stator teeth;
wherein,
the inner ring fixing frame and the outer ring fixing frame are arranged independently and are matched with each other to fix all the discrete stator teeth.
4. The disc motor of claim 3, wherein the inner ring mount and the outer ring mount each have a positioning structure disposed thereon that enables positioning of the discrete stator teeth in each of an axial, a radial, and a circumferential direction of the stator disc.
5. The disc motor according to claim 4, wherein the positioning structure includes:
a stationary slot opening to the discrete stator teeth and for positioning the discrete stator teeth in the axial direction and the radial direction;
stationary teeth located at an opening of the stationary slot and protruding toward the discrete stator teeth, the stationary teeth for positioning the discrete stator teeth in the circumferential direction.
6. The disc motor according to claim 3, wherein the inner ring holder and/or the outer ring holder are formed by split-molding a plurality of split bodies, and the split bodies are split-molded in an axial direction or a radial direction of the stator disc.
7. The disc motor of claim 1, wherein the discrete stator teeth comprise:
the iron core is provided with an axial positioning surface, a radial positioning surface and a circumferential positioning surface which are matched with the fixing frame;
and the coil is wound on the iron core and avoids the axial positioning surface, the radial positioning surface and the circumferential positioning surface.
8. The disc motor according to claim 7, wherein the core is formed by laminating a plurality of silicon sheets or by magnetic powder die casting, and the axial positioning surface and the radial positioning surface are corner cutting surfaces of the core.
9. The disc motor of claim 1, wherein the stator discrete teeth are rectangular teeth or sector teeth.
10. The disc motor of claim 1, wherein the mount is a non-metallic mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210325683.2A CN114696561A (en) | 2022-03-30 | 2022-03-30 | Disk type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210325683.2A CN114696561A (en) | 2022-03-30 | 2022-03-30 | Disk type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114696561A true CN114696561A (en) | 2022-07-01 |
Family
ID=82141760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210325683.2A Pending CN114696561A (en) | 2022-03-30 | 2022-03-30 | Disk type motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114696561A (en) |
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| DE102016203140A1 (en) * | 2016-02-26 | 2017-08-31 | Robert Bosch Gmbh | Stator arrangement for axial flow machine |
| CN209659021U (en) * | 2019-05-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of disc type electric machine |
| CN111682679A (en) * | 2020-06-08 | 2020-09-18 | 齐鲁工业大学 | Double-rotor single-stator disc type motor |
| CN112187014A (en) * | 2020-10-10 | 2021-01-05 | 苏州英磁新能源科技有限公司 | Superconducting disk type motor |
| CN113241865A (en) * | 2021-06-16 | 2021-08-10 | 常州神力电机股份有限公司 | Piece together block formula iron core subassembly of new forms of energy hybrid motor |
| CN113746232A (en) * | 2020-05-29 | 2021-12-03 | 卧龙电气驱动集团股份有限公司 | Mixed cooling double-rotor single-stator disc type permanent magnet motor |
| CN215772687U (en) * | 2020-07-20 | 2022-02-08 | 丹佛斯（天津）有限公司 | Stator for disc motor and compressor |
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2022
- 2022-03-30 CN CN202210325683.2A patent/CN114696561A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016203140A1 (en) * | 2016-02-26 | 2017-08-31 | Robert Bosch Gmbh | Stator arrangement for axial flow machine |
| CN209659021U (en) * | 2019-05-14 | 2019-11-19 | 上海盘毂动力科技股份有限公司 | A kind of disc type electric machine |
| CN113746232A (en) * | 2020-05-29 | 2021-12-03 | 卧龙电气驱动集团股份有限公司 | Mixed cooling double-rotor single-stator disc type permanent magnet motor |
| CN111682679A (en) * | 2020-06-08 | 2020-09-18 | 齐鲁工业大学 | Double-rotor single-stator disc type motor |
| CN215772687U (en) * | 2020-07-20 | 2022-02-08 | 丹佛斯（天津）有限公司 | Stator for disc motor and compressor |
| CN112187014A (en) * | 2020-10-10 | 2021-01-05 | 苏州英磁新能源科技有限公司 | Superconducting disk type motor |
| CN113241865A (en) * | 2021-06-16 | 2021-08-10 | 常州神力电机股份有限公司 | Piece together block formula iron core subassembly of new forms of energy hybrid motor |
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