CN110768403A - Stator module, permanent magnet motor, compressor, fan and air conditioner - Google Patents
Stator module, permanent magnet motor, compressor, fan and air conditioner Download PDFInfo
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- CN110768403A CN110768403A CN201810845370.3A CN201810845370A CN110768403A CN 110768403 A CN110768403 A CN 110768403A CN 201810845370 A CN201810845370 A CN 201810845370A CN 110768403 A CN110768403 A CN 110768403A
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- 238000004804 winding Methods 0.000 claims abstract description 103
- 230000007704 transition Effects 0.000 claims abstract description 90
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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- Engineering & Computer Science (AREA)
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- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses a stator assembly, a permanent magnet motor, a compressor, a fan and an air conditioner, wherein the stator assembly comprises a stator core, a stator winding and an insulating end plate, the stator core comprises a plurality of stator teeth, a stator slot is defined between every two adjacent stator teeth, the stator winding comprises a plurality of phase windings, each phase winding comprises at least one coil group, each coil group comprises a plurality of coils, the plurality of coils are adjacently arranged along the circumferential direction of the stator core, the two adjacent coils in the coil groups are connected through a first crossover line, and the current directions of the two adjacent coils in the shared stator slot are the same. The number of the insulating end plates is two, one end of the first transition line is connected with one of the two adjacent coils, and the other end of the first transition line is transited to be connected with the other one of the two adjacent coils through the insulating end plates. According to the stator assembly disclosed by the invention, the slot fullness rate is effectively improved, and the use reliability of stator winding is ensured.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a stator assembly, a permanent magnet motor, a compressor, a fan and an air conditioner.
Background
The high efficiency and miniaturization of the inverter air conditioner, the compressor and the fan are the technical direction of the industry. The number of poles of the permanent magnet motor of the variable frequency compressor or the DC fan is mainly 4 poles and 6 poles, so that the improvement of the power density and the efficiency of the permanent magnet motor is limited.
In the related art, the power density and efficiency of the permanent magnet motor are greatly improved compared with those of the conventional motor by improving the structure of the permanent magnet motor and the like, however, the permanent magnet motor has an unreasonable structure, and the improvement of the full rate of the stator slot is limited, so that the improvement of the power density and efficiency of the permanent magnet motor is limited.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a stator assembly that effectively increases the slot-full rate while ensuring the reliability of the use of stator windings.
Another object of the present invention is to provide a permanent magnet machine having the above-described stator assembly.
It is a further object of the present invention to provide a compressor having the above-mentioned permanent magnet motor.
Still another object of the present invention is to provide a fan having the above permanent magnet motor.
It is still another object of the present invention to provide an air conditioner having at least one of the above compressor and the above fan.
The stator assembly according to an embodiment of the first aspect of the invention comprises: the stator core comprises a plurality of stator teeth, the plurality of stator teeth are arranged along the circumferential direction of the stator core, and a stator slot is defined between every two adjacent stator teeth; the stator winding comprises a multi-phase winding, each phase of the winding comprises at least one coil group, each coil group comprises a plurality of coils, the plurality of coils are adjacently arranged along the circumferential direction of the stator core, each coil is correspondingly wound on the stator teeth, two adjacent coils in the coil groups are connected through a first transition line, and the current directions of the two adjacent coils in the shared stator slot are the same; the number of the insulating end plates is two, the two insulating end plates are respectively arranged at two axial ends of the stator core, one end of the first transition line is connected with one of the adjacent two coils, and the other end of the first transition line is transited to be connected with the other of the adjacent two coils through the insulating end plates.
According to the stator assembly provided by the embodiment of the invention, the first transition line between two adjacent coils in the coil group is transited through the insulating end plate instead of being transited in the stator slot, so that the slot fullness rate of the stator assembly is effectively improved, meanwhile, the risk that the first transition line is scratched or broken by the winding nozzle is avoided, the first transition line is effectively protected, and the use reliability of stator winding is ensured; when the stator component is applied to the permanent magnet motor, the power density and the efficiency of the permanent magnet motor can be effectively improved, and the miniaturization of the permanent magnet motor is facilitated.
According to some embodiments of the invention, the winding directions of two adjacent coils in the coil group are opposite.
According to some embodiments of the invention, at least one of the two insulating end plates has a stopper portion thereon, the stopper portion including at least one of a wire groove group and a stopper projection to limit displacement of the first transition line.
According to some embodiments of the invention, the insulating end plate comprises: the stator core comprises a stator core, a first wire passing part, a limiting part, a plurality of wire passing groove groups and a plurality of wire passing grooves, wherein the wire passing groove groups are arranged along the circumferential direction of the stator core at intervals, each wire passing groove group comprises two wire passing grooves, the two wire passing grooves are formed in the first wire passing part and are arranged along the circumferential direction of the stator core at intervals, each wire passing groove radially penetrates through the first wire passing part along the stator core, one side, far away from the stator core, of each wire passing groove is open, and two ends of each first wire passing groove respectively penetrate through the two wire passing grooves of the wire passing groove groups to be connected with the coils.
According to some embodiments of the invention, the insulating end plate comprises: the second crosses the line portion, spacing portion includes a plurality ofly spacing arch, spacing arch is established on the periphery wall of second cross the line portion, first cross the ferry line card and establish on the spacing arch.
According to some embodiments of the invention, the insulating end plate comprises: the limiting part comprises a plurality of wire slot groups and a plurality of limiting bulges, each wire slot group comprises at least one wire slot, when each wire slot group comprises one wire slot, one end of the first transition wire penetrates through the wire slot to be connected with one of the two adjacent coils, and the other end of the first transition wire is clamped on the limiting bulge to be connected with the other of the two adjacent coils; when the wire slot group comprises two wire slots, the limiting bulge is positioned between the two wire slots of the wire slot group in the circumferential direction of the stator core.
According to some embodiments of the invention, each of the windings has a plurality of winding joints located on the same side or on a different side of the stator core from the first transition line.
According to some embodiments of the invention, each phase of the winding comprises one of the coil sets, the coil set comprising two or three of the coils.
According to some embodiments of the invention, the winding of each phase includes two of the coil groups, and the two coil groups are oppositely disposed in a radial direction of the stator core.
According to some embodiments of the present invention, the two coil groups are connected by a second transition line, one end of the second transition line is connected to one of the two coil groups, and the other end of the second transition line is transited from the insulating end plate to the other of the two coil groups.
A permanent magnet machine according to an embodiment of the second aspect of the invention comprises a stator assembly according to an embodiment of the first aspect of the invention described above.
According to the permanent magnet motor provided by the embodiment of the invention, by adopting the stator assembly, the power density and efficiency of the permanent magnet motor can be effectively improved, and the miniaturization of the permanent magnet motor is facilitated.
A compressor according to an embodiment of the third aspect of the present invention comprises a permanent magnet motor according to an embodiment of the second aspect of the present invention described above.
According to the compressor provided by the embodiment of the invention, the permanent magnet motor is adopted, so that the high efficiency and the miniaturization of the compressor can be realized.
A wind turbine according to an embodiment of the fourth aspect of the present invention comprises a permanent magnet machine according to an embodiment of the second aspect of the present invention described above.
According to the fan provided by the embodiment of the invention, the permanent magnet motor is adopted, so that the high efficiency and miniaturization of the fan can be realized.
An air conditioner according to an embodiment of the fifth aspect of the present invention includes at least one of the compressor according to the above-described third aspect of the present invention and the fan according to the above-described fourth aspect of the present invention.
According to the air conditioner provided by the embodiment of the invention, the high-efficiency and energy-saving effects of the air conditioner can be realized by adopting at least one of the compressor and the fan.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a stator assembly according to an embodiment of the present invention;
FIG. 2 is a partial structural schematic view of a stator assembly according to an embodiment of the present invention, wherein the cross-shape within the stator windings indicates that current is directed into the page and the dots within the stator windings indicate that current is directed out of the page;
fig. 3 is a partial structural schematic view of a stator assembly according to another embodiment of the present invention, wherein the cross shapes within the stator windings are illustrated schematically as current flow into the page and the dots within the stator windings are illustrated as current flow out of the page;
FIG. 4 is a schematic diagram comparing slot fill ratios of a stator assembly according to an embodiment of the present invention with a stator assembly of the prior art;
FIG. 5 is a schematic structural view of a stator assembly according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a stator assembly according to another embodiment of the present invention;
FIG. 7 is a schematic structural view of an insulating end plate according to an embodiment of the invention;
FIG. 8 is a schematic structural view of an insulating end plate according to another embodiment of the present invention;
FIG. 9 is another partial schematic structural view of a stator assembly according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a permanent magnet electric machine according to an embodiment of the present invention;
fig. 11 is a sectional view of a compressor according to an embodiment of the present invention.
Reference numerals:
compressor 300, casing 201, air inlet 201a, air outlet 201b, crankshaft 202, compression mechanism 203,
Cylinder 203a, main bearing 203b, sub bearing 203c, piston 203d,
A permanent magnet motor 200,
Rotor assembly 101, rotor core 101a, permanent magnet 101b,
A first crossover portion 30a, a second crossover portion 30b, a third crossover portion 30c,
A first insulating end plate 31, a second insulating end plate 32,
A position-limiting part 33, a thread-passing groove set 331, a thread-passing groove 331a, a position-limiting protrusion 332,
Mounting post 34, guide 341, insulator 4.
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 or similar 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 illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "upper," "lower," "left," "right," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
A stator assembly 100 in accordance with an embodiment of the first aspect of the present invention is described below with reference to fig. 1-9.
As shown in fig. 1 to 9, a stator assembly 100 according to an embodiment of the present invention includes a stator core 1, a stator winding 2, and an insulating end plate.
The stator core 1 comprises a plurality of stator teeth 11, the plurality of stator teeth 11 are arranged along the circumferential direction of the stator core 1, a stator slot 10 is defined between every two adjacent stator teeth 11, the stator winding 2 comprises a multi-phase winding, each phase winding comprises at least one coil group 21, each coil group 21 comprises a plurality of coils 211, the plurality of coils 211 are adjacently arranged along the circumferential direction of the stator core 1, each coil 211 is correspondingly wound on the stator teeth 11, two adjacent coils 211 in each coil group 21 are connected through a first transition line 211a, and the current directions of the two adjacent coils 211 in the common stator slot 10 are the same. The number of the insulating end plates is two, the two insulating end plates are respectively arranged at two axial ends of the stator core 1, one end of the first transition line 211a is connected with one of the two adjacent coils 211, and the other end of the first transition line 211a is connected with the other one of the two adjacent coils 211 through the transition from the insulating end plate.
For example, as shown in fig. 1 to 9, the stator core 1 may be formed in a substantially ring-shaped structure, each stator tooth 11 includes a yoke portion 11a and a tooth portion 11b arranged in a radial direction of the stator core 1, the yoke portions 11a of the plurality of stator teeth 11 are sequentially connected end to form a ring-shaped stator yoke, the yoke portions 11a of two adjacent stator teeth 11 are connected to each other, the tooth portions 11b of the plurality of stator teeth 11 are arranged at intervals in a circumferential direction of the stator core 1, and the stator winding 2 may be wound on the tooth portions 11b of the stator teeth 11 to be located in the stator slots 10.
The stator winding 2 may adopt a centralized double-layer winding, the winding may be three-phase, each phase of winding includes one or more coil groups 21, each coil group 21 includes a plurality of coils 211, the plurality of coils 211 of the coil group 21 are adjacently disposed along the circumferential direction of the stator core 1, each coil 211 is correspondingly wound on one stator tooth 11, that is, the number of the coils 211 is equal to the number of the stator teeth 11, the plurality of stator teeth 11 corresponding to the coil group 21 are adjacently disposed along the circumferential direction of the stator core 1, and each stator slot 10 has two wires of the adjacent coil 211; the current flow direction on the wires in the shared stator slot 10 of two adjacent coils 211 in the coil group 21 is the same, so as to facilitate the arrangement of each phase winding.
The two insulation end plates are respectively arranged on the end faces of the two axial ends of the stator core 1, each insulation end plate is formed into an insulation framework with certain hardness to fix the stator winding 2, and the two insulation end plates can be identical or different in structure; the two insulating end plates may be a first insulating end plate 31 and a second insulating end plate 32, respectively, the first insulating end plate 31 may be provided at one axial end (e.g., the upper end in fig. 5 and 6) of the stator core 1, and the second insulating end plate 32 may be provided at the other axial end (e.g., the lower end in fig. 5 and 6) of the stator core 1; any two adjacent coils 211 in each coil group 21 can be connected through a first transition line 211a, that is, one end of the first transition line 211a is connected to one of the two adjacent coils 211, the other end of the first transition line 211a is connected to the other of the two adjacent coils 211, and the other end of the first transition line 211a is transited by an insulating end plate, so that the first transition line 211a can be inserted into the insulating end plate, and the first transition line 211a is prevented from being obliquely transited in the stator slot 10 common to the two adjacent coils 211, so that the first transition line 211a is prevented from occupying the stator slot 10, the slot filling rate of the stator assembly 100 is effectively improved, and meanwhile, since the first transition line 211a is transited through the insulating end plate instead of being transited in the stator slot 10, when the winding mouth of the stator assembly 100 extends into the stator slot 10 to wind the coils 211 during the winding process, the first transition line 211a is scratched or broken by the winding nozzle, so that the first transition line 211a is effectively protected, and the use reliability of the stator winding 2 is ensured; as can be seen in fig. 4, the stator assembly 100 of the present application has a slot fill of 85%, which is significantly higher than the 70% slot fill of the stator assembly of the prior art. When the stator assembly 100 is applied to a permanent magnet motor, the power density and efficiency of the permanent magnet motor can be effectively improved, and the miniaturization of the permanent magnet motor is facilitated.
Here, it should be noted that the "slot full rate" may specify the percentage of the sum of the sectional areas of the stator winding 2 in the sub-slot 10 to the sectional area of the stator slot 10; the first transition line 211a may make a transition through either one of the two insulating end plates.
According to the stator assembly 100 provided by the embodiment of the invention, the first transition line 211a between two adjacent coils 211 in the coil group 21 is transited through the insulating end plate instead of being transited in the stator slot 10, so that the slot fullness rate of the stator assembly 100 is effectively improved, meanwhile, the risk that the first transition line 211a is scratched or broken by a winding nozzle is avoided, the first transition line 211a is effectively protected, and the use reliability of the stator winding 2 is ensured; when the stator assembly 100 is applied to a permanent magnet motor, the power density and efficiency of the permanent magnet motor can be effectively improved, and the miniaturization of the permanent magnet motor is facilitated.
Specifically, the winding directions of two adjacent coils 211 in the coil group 21 are opposite, so that the continuous winding of the coil group 21 is facilitated, and the winding efficiency of the stator assembly 100 is improved. For example, when the coil assembly 21 includes two coils 211, the winding directions of the two coils 211 are opposite; when the coil group 21 includes three coils 211, a winding direction of a middle one of the three coils 211 is opposite to a winding direction of the remaining two of the three coils 211.
Here, when it should be noted that the "winding direction of the coil 211" may be derived from a radial direction of the corresponding stator tooth 11, from inside to outside, or from outside to inside, the direction "outside" refers to a direction away from the central axis 100a of the stator assembly, and the opposite direction is defined as "inside", and the axial direction of the stator core 1 "is parallel to the extending direction of the central axis 100a of the permanent magnet motor. For example, in the example of fig. 1, the upper coil group 21 includes two coils 211, and the upper coil group 21 may be wound with the right coil 211 first and then with the left coil 211, where the winding direction of the left coil 211 of the upper coil group 21 is counterclockwise as viewed from inside to outside along the radial direction of the corresponding stator tooth 11, and the winding direction of the right coil 211 of the upper coil group 21 is clockwise as viewed from inside to outside along the radial direction of the corresponding stator tooth 11. For another example, in the example of fig. 3, the coil group 21 includes three coils 211, and the winding order may be the right coil 211, the middle coil 211, and the left coil 211 in sequence, that is, the right coil 211, the middle coil 211, and the left coil 211 are wound first, and assuming that the current direction in fig. 3 coincides with the winding direction, the winding direction of the right coil 211 is clockwise as viewed from inside to outside along the radial direction of the right stator tooth 11, the winding direction of the middle coil 211 is counterclockwise as viewed from inside to outside along the radial direction of the middle stator tooth 11, and the winding direction of the left coil 211 is clockwise as viewed from inside to outside along the radial direction of the left stator tooth 11.
Optionally, at least one of the two insulating end plates has the position-limiting portion 33 thereon, that is, only the first insulating end plate 31 has the position-limiting portion 33 thereon and the second insulating end plate 32 does not have the position-limiting portion 33 thereon, or only the second insulating end plate 32 has the position-limiting portion 33 thereon and the first insulating end plate 31 does not have the position-limiting portion 33 thereon, or both the first insulating end plate 31 and the second insulating end plate 32 have the position-limiting portion 33 thereon. The position-limiting part 33 includes at least one of the slot set 331 and the position-limiting protrusion 332, that is, the position-limiting part 33 may include the slot set 331 but not the position-limiting protrusion 332, or the position-limiting part 33 includes the position-limiting protrusion 332 but not the slot set 331, or the position-limiting part 33 includes the slot set 331 and the position-limiting protrusion 332. Therefore, the line slot group 331 and/or the limiting protrusion 332 are/is arranged on at least one of the two insulation end plates to limit the displacement of the first transition line 211a, so that the limitation of the first transition line 211a is realized, the position stability of the first transition line 211a on the insulation end plate is ensured, the first transition line 211a is prevented from being separated from the insulation end plate to influence the winding or use of the stator assembly 100, and the use reliability of the stator assembly 100 is ensured.
In some alternative embodiments of the present invention, in the example of fig. 6 and 7, the insulating end plate includes a first crossover portion 30a, the first crossover portion 30a may be formed substantially in a cylindrical structure, the stopper portion 33 includes a plurality of crossover slot groups 331, the plurality of crossover slot groups 331 are arranged at intervals in a circumferential direction of the stator core 1, each crossover slot group 331 includes two crossover slots 331a, both the two crossover slots 331a are formed on the first crossover portion 30a and both the crossover slots 331a are arranged at intervals in the circumferential direction of the stator core 1, both ends of the first crossover wire 211a respectively pass through both the crossover slots 331a of the crossover slot group 331 to be connected to the coil 211; each of the wire passing grooves 331a penetrates the first wire passing part 30a in a radial direction of the stator core 1, that is, each of the wire passing grooves 331a penetrates the inner circumferential wall and the outer circumferential wall of the first wire passing part 30a in the radial direction of the stator core 1, the wire passing groove 331a may be formed by a portion of an end surface of the first wire passing part 30a, which is far from the center of the stator core 1, being recessed toward the center of the stator core 1, such that a side of the wire passing groove 331a, which is far from the stator core 1, is opened, and the first wire passing 211a may be disposed in the wire passing groove 331a from the opened side of the wire passing groove 331a, thereby facilitating the disposition of the first wire passing 211a and further facilitating the winding of the coil group 21. In the arrangement process of the first transition line 211a, the first transition line 211a may pass through one of the two wire slots 331a in the wire slot set 331 from inside to outside, then pass through the outer peripheral wall of the first wire passing portion 30a, and then pass through the other of the two wire slots 331a in the wire slot set 331 from outside to inside to be connected to the coil 211, thereby ensuring the limiting function of the wire slot set 331, and simultaneously enabling the stator assembly 100 to have a larger winding space, which is convenient for winding the stator winding 2. The insulating end plate may be the first insulating end plate 31 or the second insulating end plate 32.
In other alternative embodiments of the present invention, the insulating end plate includes the second crossover portion 30b, the second crossover portion 30b may be substantially formed in a cylindrical structure, the limiting portion 33 includes a plurality of limiting protrusions 332, the plurality of limiting protrusions 332 may be disposed at intervals along the circumferential direction of the stator core 1, the limiting protrusions 332 are disposed on the outer circumferential wall of the second crossover portion 30b, and the limiting protrusions 332 may be formed by protruding outward a portion of the outer circumferential wall of the second crossover portion 30b, so that when the first crossover line 211a is transited by the outer circumferential wall of the first crossover portion 30a, the first crossover line 211a may be clamped on the limiting protrusions 332, so that the limiting of the first crossover line 211a is achieved, and at the same time, the stator assembly 100 has a larger winding space, which facilitates the winding of the stator winding 2. The insulating end plate may be the first insulating end plate 31 or the second insulating end plate 32.
It should be understood that the shape of the limiting protrusion 332 may be specifically set according to actual requirements, for example, the limiting protrusion 332 may be a substantially convex block, and may also be formed into a hook shape, but is not limited thereto, and it is only required to ensure that the first transition line 211a can be clamped on the limiting protrusion 332 without falling off.
In still other alternative embodiments of the present invention, the insulating end plate includes a third winding portion 30c, the third winding portion 30c may be formed substantially in a cylindrical structure, the limiting portion 33 includes a plurality of winding slot sets 331 and a plurality of limiting protrusions 332, the plurality of winding slot sets 331 are arranged at intervals in a circumferential direction of the stator core 1, and each winding slot set 331 includes at least one winding slot 331 a. The insulating end plate may be the first insulating end plate 31 or the second insulating end plate 32. For example, in the example of fig. 8, the wire slot group 331 includes one wire slot 331a, the wire slot 331a penetrates the third wire passing part 30c in the radial direction of the stator core 1, that is, each wire slot 331a penetrates the inner circumferential wall and the outer circumferential wall of the third wire passing part 30c in the radial direction of the stator core 1, the wire slot 331a may be formed by a portion of an end surface of the third wire passing part 30c, which is away from the center of the stator core 1, being recessed toward the center of the stator core 1, such that a side of the wire slot 331a, which is away from the stator core 1, is open, and the first wire passing 211a may be placed in the wire slot 331a from the open side of the wire slot 331 a; one end of the first transition line 211a passes through the line passing groove 331a to be connected to one of the two adjacent coils 211, and the other end of the first transition line 211a is clamped on the limiting protrusion 332 to be connected to the other of the two adjacent coils 211, that is, the first transition line 211a can pass through the line passing groove 331a from inside to outside, is transited by the outer circumferential wall of the third line passing part 30c to be clamped on at least one of the limiting protrusions 332, and transits from outside to inside through the end face of the third line passing part 30c to be connected to the coil 211, and the limiting of the first transition line 211a is realized under the combined action of the line passing groove 331a and the limiting protrusion 332.
For another example, in the example of fig. 5, the wire slot set 331 includes two wire slots 331a, the two wire slots 331a are both formed on the first wire passing portion 30a, the two wire slots 331a are arranged at intervals along the circumferential direction of the stator core 1, the limiting protrusion 332 is located between the two wire slots 331a of the wire slot set 331 in the circumferential direction of the stator core 1, and both ends of the first wire 211a respectively pass through the two wire slots 331a of the wire slot set 331 to connect with the coil 211; each of the line passing grooves 331a penetrates the third line passing part 30c in a radial direction of the stator core 1, that is, each of the line passing grooves 331a penetrates the inner circumferential wall and the outer circumferential wall of the third line passing part 30c in the radial direction of the stator core 1, and the line passing groove 331a may be formed by a portion of an end surface of the third line passing part 30c, which is far from the center of the stator core 1, being recessed toward the center of the stator core 1, such that a side of the line passing groove 331a, which is far from the stator core 1, is opened, and the first line passing 211a may be placed in the line passing groove 331a from the opened side of the line passing groove 331 a. In the arrangement of the first transition line 211a, the first transition line 211a may pass through one of the two wire slots 331a in the wire slot set 331 from the inside to the outside, then pass through the outer peripheral wall of the third wire passing portion 30c, and then pass through the other of the two wire slots 331a in the wire slot set 331 from the outside to the inside to be connected to the coil 211, wherein, when the wall surfaces of the two line-passing grooves 331a adjacent to the center of the stator core 1 are located at one side of the limiting protrusion 332 adjacent to the center of the stator core 1, the first transition line 211a can be limited only by the two line-passing grooves 331a, when the wall surfaces of the two line slots 331a adjacent to the center of the stator core 1 are located at the side of the restriction protrusion 332 away from the center of the stator core 1, the portion of the first transition line 211a located at the outer circumferential wall of the third wire passing part 30c may be caught on the position limiting protrusion 332 between the two wire passing grooves 331a, and at this time, the first transition line 211a may be simultaneously limited by the two wire passing grooves 331a and the position limiting protrusion 332.
Specifically, each group of windings has a plurality of winding connectors 20, and the winding connectors 20 and the first transition lines 211a are located on the same side or different sides of the stator core 1, so that the arrangement of the winding connectors 20 and the first transition lines 211a has good flexibility, and the stator winding 2 can be wound quickly. For example, as shown in fig. 5 and 6, the winding taps 20 of the coil group 21 may be located on the same axial side of the stator core 1 as the first transition line 211a of the coil group 21, that is, the winding taps 20 may protrude through one of the two insulating end plates through which the first transition line 211a may transition; the winding connections 20 of the coil assembly 21 may also be located on the axially opposite side of the stator core 1 from the first transition line 211a of the coil assembly 21, i.e., the winding connections 20 may exit through one of the two insulating end plates, and the first transition line 211a may transition through the other of the two insulating end plates. For example, in the example of fig. 5, the winding joint 20 of the coil group 21 and the first transition line 211a of the coil group 21 may be both located on the upper side of the stator core 1; for another example, in the example of fig. 6, the winding taps 20 of the coil group 21 may be located at an upper side of the stator core 1, and the first transition line 211a of the coil group 21 may be located at a lower side of the stator core 1.
It is understood that each group of windings includes at least one coil group 21, each coil group 21 may have two winding connectors 20, and the two winding connectors 20 may be located on the same side of the stator core 1 or on different sides of the stator core 1; each coil group 21 may have one or more first transition lines 211a, when the coil group 21 has one first transition line 211a, the first transition line 211a may be located at the same side or different side of the stator core 1 from the two winding connectors 20, when the coil group 21 has a plurality of first transition lines 211a, the plurality of first transition lines 211a may be located at the same side of the stator core 1 or different sides of the stator core 1, and the plurality of first transition lines 211a may be located at the same side or different sides of the stator core 1 from the two winding connectors 20.
Specifically, in the example of fig. 2, each phase winding includes one coil group 21, the coil group 21 includes two coils 211, the two coils 211 are correspondingly disposed on the two stator teeth 11, and the two coils 211 are disposed adjacently; in the example of fig. 3, each phase winding includes one coil group 21, the coil group 21 includes three coils 211, the three coils 211 are correspondingly disposed on the three stator teeth 11, and the three coils 211 are adjacently disposed. In the example of fig. 1, each phase winding includes two coil groups 21, the two coil groups 21 are oppositely disposed in the radial direction of the stator core 1, each coil group 21 includes two coils 211, and of course, each coil group 21 may also include three coils 211.
Further, as shown in fig. 1, the two coil groups 21 are connected by a second transition line 211b, one end of the second transition line 211b is connected to one of the two coil groups 21, and the other end of the second transition line 211b is transited from the insulating end plate to the other of the two coil groups 21, so that the second transition line 211b may be inserted into any one of the two insulating end plates, and the second transition line 211b is prevented from obliquely crossing the stator slot 10 between the two coil groups 21, so that the second transition line 211b is prevented from occupying the stator slot 10, the slot filling rate of the stator assembly 100 is further improved, and meanwhile, the second transition line 211b is effectively protected, and the second transition line 211b is prevented from being scratched or broken by the winding nozzle.
Of course, when each set of windings includes two coil sets 21, the two coil sets 21 may also be not connected by the second transition line 211b but wound separately from each other, that is, each coil set 21 has two winding connections 20, so that the winding has four winding connections 20.
It can be understood that the second transition line 211b can be limited by the limiting portion 33 on the insulating end plate, and the limiting portion 33 includes at least one of the line slot set 331 and the limiting protrusion 332, so that the position stability of the second transition line 211b on the insulating end plate is ensured, the winding or use of the stator assembly 100 is prevented from being affected by the second transition line 211b being separated from the insulating end plate, and the use reliability of the stator assembly 100 is further ensured.
As shown in fig. 9, the insulating member 4 is disposed in the stator slot 10 to separate the stator winding 2 from the stator teeth 11 for electrical insulation, the insulating member 4 may be a thin insulating paper, so that the effective sectional area in the stator slot 10 is large, and more stator windings 2 may be disposed in the stator slot 10 to increase the slot fullness, thereby increasing the power density and efficiency of the permanent magnet motor 200; the insulating member 4 and the insulating end plate may be formed by injection molding to be separated from each other, and the stator winding 2 and the stator core 1 may be completely separated by the insulating member 4 and the insulating end plate. Be equipped with a plurality of erection columns 34 that set up along stator core 1's circumference interval on every insulating end plate, every erection column 34 can all extend towards stator core 1 along stator core 1's axial, be formed with a plurality of mounting holes on stator core 1's the axial both ends terminal surface respectively, every mounting hole can be by the concave formation of stator core 1's part terminal surface, the cooperation of a plurality of erection columns 34 one-to-one is in a plurality of mounting holes to install insulating end plate on stator core 1 fast.
Each mounting column 34 may be formed in a cylindrical structure, a free end of each mounting column 34 may be provided with a guide portion 341, an outer peripheral wall of the guide portion 341 forms a guide surface, and the guide portion 341 may be formed in a circular truncated cone structure, so that a cross-sectional area of the guide portion 341 along an axial direction of the stator core 1 is gradually reduced from one end of the guide portion 341 far away from the center of the stator core 1 toward one end of the guide portion 341 close to the center of the stator core 1, so that the guide surface may play a good role in guiding in the mounting process of the insulating end plate, and the mounting efficiency of the insulating end plate is further improved.
A permanent magnet machine 200 according to an embodiment of the second aspect of the invention comprises a stator assembly 100 according to the above-described embodiment of the first aspect of the invention.
For example, as shown in fig. 10, the permanent magnet motor 200 may further include a rotor assembly 101, the rotor assembly 101 may be located inside the stator assembly 100 and a central axis of the rotor assembly 101 may be disposed coincident with a central axis of the stator assembly 100; rotor subassembly 101 includes rotor core 101a and inlays permanent magnet 101b of establishing on rotor core 101a, can be formed with a plurality of permanent magnet grooves that set up along rotor core 101 a's circumference interval on rotor core 101a, and the both ends terminal surface that rotor core 101a can be run through along rotor core 101 a's axial in every permanent magnet groove, and a plurality of permanent magnets 101b can correspond and inlay and establish in a plurality of permanent magnet grooves for in order to form a magnetic pole behind the at least one permanent magnet 101b of embedding in every permanent magnet groove.
According to the permanent magnet motor 200 of the embodiment of the invention, by adopting the stator assembly 100, the power density and efficiency of the permanent magnet motor 200 can be effectively improved, and the permanent magnet motor 200 can be miniaturized.
Alternatively, as shown in fig. 10, the rotor assembly 101 has a number of stages Q, Q satisfying: q is more than or equal to 8 and less than or equal to 14, for example, the number of the stator slots 10 is 12, Q can be 10, compared with the rotor assembly provided with 4 or 6 magnetic poles in the prior art, the number of the magnetic poles is increased, so that the power density of the permanent magnet motor 200 is further effectively improved, the copper loss of the permanent magnet motor 200 is reduced, the high efficiency of the permanent magnet motor 200 is further facilitated, the structural size of the rotor assembly 101 can be reduced, and the miniaturization of the permanent magnet motor 200 is further facilitated.
A compressor 300 according to an embodiment of the third aspect of the present invention comprises a permanent magnet motor 200 according to an embodiment of the second aspect of the present invention described above. Wherein, the compressor 300 may be a vertical compressor; the compressor 300 may be a single cylinder compressor or a multi-cylinder compressor. But is not limited thereto.
For example, as shown in fig. 11, the compressor 300 may be a single-cylinder compressor and the compressor 300 may be a rotary compressor, the compressor 300 may further include a casing 201, a crankshaft 202 and a compression mechanism portion 203, the crankshaft 202, the compression mechanism portion 203 and the permanent magnet motor 200 are all disposed in the casing 201, an air outlet 201b may be formed at the top of the casing 201, an air inlet 201a may be formed on a peripheral wall of the casing 201, the crankshaft 202 is disposed through the permanent magnet motor 200 and the compression mechanism portion 203, so that when the permanent magnet motor 200 operates, the rotor assembly 101 rotates to drive the compression mechanism portion 203 to operate through the crankshaft 202 to realize suction, compression and discharge of refrigerant; the compression mechanism 203 comprises a cylinder 203a, and a main bearing 203b and a sub bearing 203c respectively located at two ends of the cylinder 203a, a compression cavity is defined in the compression mechanism 203, an inlet and an outlet respectively communicated with the compression cavity can be formed on the compression mechanism, a piston 203d is arranged in the compression cavity, an eccentric portion of the crankshaft 202 is arranged in the piston 203d in a penetrating mode to drive the piston 203d to run eccentrically, and the inlet is communicated with the air inlet 201a to enable refrigerant to flow into the compression cavity through the air inlet 201a and the inlet to be compressed. Wherein, the end of the rotor assembly 101 of the permanent magnet motor 200 may be provided with a balance weight to achieve dynamic balance of the crankshaft 102.
According to the compressor 300 of the embodiment of the present invention, the permanent magnet motor 200 is adopted, so that the compressor 300 can be made efficient and compact.
A wind turbine according to a fourth aspect of the present invention includes a permanent magnet motor 200 according to the above-described second aspect of the present invention.
According to the fan provided by the embodiment of the invention, the permanent magnet motor 200 is adopted, so that the fan can be efficiently and compactly arranged.
The air conditioner according to the fifth aspect embodiment of the present invention includes at least one of the compressor according to the above-described third aspect embodiment of the present invention and the fan according to the above-described fourth aspect embodiment of the present invention, that is, the air conditioner includes a compressor and a fan, wherein the compressor is the compressor 300 according to the above-described third aspect embodiment of the present invention and the fan is not the fan according to the above-described fourth aspect embodiment of the present invention, or the compressor is the compressor 300 according to the above-described third aspect embodiment of the present invention and the fan is the fan according to the above-described fourth aspect embodiment of the present invention. The air conditioner can realize cooling and/or heating, and can be a cabinet air conditioner, a wall-mounted air conditioner, an embedded air conditioner, a window air conditioner and the like.
According to the air conditioner of the embodiment of the present invention, by using at least one of the compressor 300 and the fan, the air conditioner can achieve high efficiency and energy saving.
Other configurations and operations of the air conditioner according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A stator assembly, comprising:
the stator core comprises a plurality of stator teeth, the plurality of stator teeth are arranged along the circumferential direction of the stator core, and a stator slot is defined between every two adjacent stator teeth;
the stator winding comprises a multi-phase winding, each phase of the winding comprises at least one coil group, each coil group comprises a plurality of coils, the plurality of coils are adjacently arranged along the circumferential direction of the stator core, each coil is correspondingly wound on the stator teeth, two adjacent coils in the coil groups are connected through a first transition line, and the current directions of the two adjacent coils in the shared stator slot are the same;
the number of the insulating end plates is two, the two insulating end plates are respectively arranged at two axial ends of the stator core, one end of the first transition line is connected with one of the adjacent two coils, and the other end of the first transition line is transited to be connected with the other of the adjacent two coils through the insulating end plates.
2. The stator assembly of claim 1 wherein adjacent two of said coils in said set of coils are wound in opposite directions.
3. The stator assembly of claim 1, wherein at least one of the two insulating end plates has a stop portion thereon, the stop portion comprising at least one of a slot set and a stop protrusion to limit displacement of the first transition line.
4. The stator assembly of claim 3, wherein the insulating end plate comprises:
the stator core comprises a stator core, a first wire passing part, a limiting part, a plurality of wire passing groove groups and a plurality of wire passing grooves, wherein the wire passing groove groups are arranged along the circumferential direction of the stator core at intervals, each wire passing groove group comprises two wire passing grooves, the two wire passing grooves are formed in the first wire passing part and are arranged along the circumferential direction of the stator core at intervals, each wire passing groove radially penetrates through the first wire passing part along the stator core, one side, far away from the stator core, of each wire passing groove is open, and two ends of each first wire passing groove respectively penetrate through the two wire passing grooves of the wire passing groove groups to be connected with the coils.
5. The stator assembly of claim 3, wherein the insulating end plate comprises:
the second crosses the line portion, spacing portion includes a plurality ofly spacing arch, spacing arch is established on the periphery wall of second cross the line portion, first cross the ferry line card and establish on the spacing arch.
6. The stator assembly of claim 3, wherein the insulating end plate comprises:
the third annular wire passing part, the limiting part comprises a plurality of wire passing groove groups and a plurality of limiting bulges, the wire passing groove groups comprise at least one wire passing groove,
when the wire slot group comprises one wire slot, one end of the first transition line passes through the wire slot to be connected with one of the two adjacent coils, and the other end of the first transition line is clamped on the limiting protrusion to be connected with the other one of the two adjacent coils;
when the wire slot group comprises two wire slots, the limiting bulge is positioned between the two wire slots of the wire slot group in the circumferential direction of the stator core.
7. The stator assembly of claim 1 wherein each set of said windings has a plurality of winding connections located on the same or different side of said stator core from said first transition line.
8. The stator assembly of any of claims 1-7, wherein each phase of the windings comprises one of the coil sets, the coil set comprising two or three of the coils.
9. The stator assembly of any of claims 1-7, wherein each phase of the windings comprises two of the coil sets, the two coil sets being disposed opposite one another in a radial direction of the stator core.
10. The stator assembly of claim 9 wherein two of said coil groups are connected by a second transition line, one end of said second transition line being connected to one of said two coil groups and the other end of said second transition line transitioning from said insulating end plate to the other of said two coil groups.
11. A permanent magnet electrical machine comprising a stator assembly according to any of claims 1-10.
12. A compressor, characterized by comprising a permanent magnet motor according to claim 11.
13. A wind turbine comprising a permanent magnet machine according to claim 11.
14. An air conditioner comprising a compressor and a fan, at least one of said compressor and said fan comprising a permanent magnet motor according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845370.3A CN110768403B (en) | 2018-07-27 | 2018-07-27 | Stator assembly, permanent magnet motor, compressor, fan and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845370.3A CN110768403B (en) | 2018-07-27 | 2018-07-27 | Stator assembly, permanent magnet motor, compressor, fan and air conditioner |
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| CN110768403B CN110768403B (en) | 2024-07-12 |
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| CN104578474A (en) * | 2015-01-30 | 2015-04-29 | 安徽美芝制冷设备有限公司 | Stator component and compressor with same |
| JP2015091146A (en) * | 2013-11-05 | 2015-05-11 | 日立オートモティブシステムズ株式会社 | Concentrated winding stator of rotary electric machine and rotary electric machine including the same |
| CN107204669A (en) * | 2017-06-30 | 2017-09-26 | 安徽美芝制冷设备有限公司 | Stator module, motor and compressor |
| CN208423956U (en) * | 2018-07-27 | 2019-01-22 | 广东美芝制冷设备有限公司 | Stator module, magneto, compressor, blower and air conditioner |
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2018
- 2018-07-27 CN CN201810845370.3A patent/CN110768403B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015091146A (en) * | 2013-11-05 | 2015-05-11 | 日立オートモティブシステムズ株式会社 | Concentrated winding stator of rotary electric machine and rotary electric machine including the same |
| CN104578474A (en) * | 2015-01-30 | 2015-04-29 | 安徽美芝制冷设备有限公司 | Stator component and compressor with same |
| CN107204669A (en) * | 2017-06-30 | 2017-09-26 | 安徽美芝制冷设备有限公司 | Stator module, motor and compressor |
| CN208423956U (en) * | 2018-07-27 | 2019-01-22 | 广东美芝制冷设备有限公司 | Stator module, magneto, compressor, blower and air conditioner |
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| CN110768403B (en) | 2024-07-12 |
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