CN114069909A - Stator, motor, compressor and electrical equipment - Google Patents
Stator, motor, compressor and electrical equipment Download PDFInfo
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- CN114069909A CN114069909A CN202111494433.3A CN202111494433A CN114069909A CN 114069909 A CN114069909 A CN 114069909A CN 202111494433 A CN202111494433 A CN 202111494433A CN 114069909 A CN114069909 A CN 114069909A
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- 238000004080 punching Methods 0.000 claims abstract description 163
- 238000003466 welding Methods 0.000 claims abstract description 110
- 230000004907 flux Effects 0.000 claims abstract description 23
- 238000003475 lamination Methods 0.000 claims description 70
- 238000004804 winding Methods 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 3
- 230000003313 weakening effect Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 16
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910000679 solder Inorganic materials 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
- H02K1/148—Sectional cores
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- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
本发明提供了一种定子、电机、压缩机和电器设备，其中，定子包括：多个定子冲块；定子冲块包括：多个沿定子轴向层叠设置的分块冲片，沿定子的周向，多个分块冲片连接形成定子冲片；至少两个焊接点，设于定子冲块的边缘，焊接点用于连接相邻两个定子冲块；焊接点包括：第一焊点，设于定子冲块的一边缘；第二焊点，设于定子冲块的另一边缘，沿定子的轴向，第一焊点和第二焊点错位分布。以点焊的方式对相邻两个定子冲块进行连接，脉冲点焊产生的比功率损耗更低，并且电机样品的相对磁导率更高，减少漏磁，防止磁场减弱，避免电机效率降低。
The invention provides a stator, a motor, a compressor and an electrical equipment, wherein the stator includes: a plurality of stator punching blocks; the stator punching blocks include: a plurality of divided punching sheets arranged in layers along the stator axial direction, and along the circumference of the stator In the direction, a plurality of block punching pieces are connected to form a stator punching piece; at least two welding points are set on the edge of the stator punching block, and the welding point is used to connect two adjacent stator punching blocks; the welding point includes: a first welding point, It is set on one edge of the stator punch block; the second welding point is set on the other edge of the stator punch block, and along the axial direction of the stator, the first welding point and the second welding point are staggered and distributed. Connect two adjacent stator punching blocks by spot welding, the specific power loss caused by pulse spot welding is lower, and the relative magnetic permeability of the motor sample is higher, reducing magnetic flux leakage, preventing the weakening of the magnetic field, and avoiding the reduction of motor efficiency .
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a stator, a motor, a compressor and electrical equipment.
Background
When the motor works, eddy current can be generated, eddy current loss can cause a stator core in the motor to generate heat, and the stator core generates heat loss due to the heat generation, so that the efficiency of the motor is easily reduced.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art or the related art.
In a first aspect, the present invention provides a stator comprising: a plurality of stator segments; the stator plunger chip includes: the stator punching sheet comprises a plurality of segmented punching sheets which are stacked along the axial direction of a stator, wherein the plurality of segmented punching sheets are spliced along the circumferential direction of the stator to form the stator punching sheet; the welding points are arranged on the edge of the stator punching block extending along the radial direction and are used for connecting two adjacent stator punching blocks; the welding point includes: the first welding spot is arranged on one edge of the stator punching block extending along the radial direction of the stator; and the second welding spots are arranged on the other edge of the stator punching block extending along the radial direction of the stator, and the first welding spots and the second welding spots are distributed in a staggered manner along the axial direction of the stator.
The stator provided by the invention is of a split structure in order to reduce the processing difficulty of the stator and improve the slot fullness rate of the motor. The stator includes a plurality of stator segments. Through setting up the stator bluff piece into a plurality ofly to when processing the stator, only process a plurality of stator bluff pieces can, assemble a plurality of stator bluff piece parts into the stator again, compare in processing a complete stator, the degree of difficulty of processing stator bluff piece part reduces, thereby reduced manufacturing cost, this kind of stator simple structure, accessible automation line realizes the automated production to the stator.
And, design the split type mosaic structure with the stator, be convenient for realize winding of coil and establish, can establish the back at the coil winding and install two adjacent piecemeal punching sheets again, reduce the degree of difficulty of establishing the coil, consequently can be under the same condition of stator size, wind and establish more coils, improve the winding of coil and establish the number of turns, be favorable to improving the groove fullness rate of motor. On the basis of not improving the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
Two adjacent stator punching blocks are connected in a welding mode, a welding point is arranged between the two adjacent stator punching blocks, namely the two adjacent stator punching blocks are connected in a spot welding mode, compared with the connection welding mode, the two adjacent stator punching blocks are connected in the spot welding mode, specific power loss generated by pulse spot welding is lower, and the relative permeability of a motor sample is higher.
The plurality of the blocking punching sheets are arranged in a stacked mode to form the blocking punching sheets, the blocking punching sheets are already processed into an integral structure, for example, the plurality of the blocking punching sheets can be axially fixed through rivet pieces, welding points do not need to be arranged on each stator punching sheet, and for example, the welding points can be arranged on the stator punching sheets on different layers at intervals. When the thickness of the stator punching sheet is small, welding points can be arranged on the stator punching sheets on different layers at intervals, and when the thickness of the stator punching sheet is large, the welding points are arranged between two adjacent sub-block punching sheets in each layer of the stator punching sheet.
The first welding points and the second welding points are respectively positioned on two sides of the stator punching block, wherein the first welding points and the second welding points are distributed in a staggered mode along the axial direction of the stator, so that the segmented punching sheet is cut along the radial direction of the stator, and the first welding points and the second welding points are not in the same section any more. The welding positions on the two sides of the stator punching block are arranged in a staggered mode, and the welding strength of two adjacent stator punching blocks can be effectively improved.
Because the welding strength of two adjacent stator punching blocks can be improved by the staggered distribution mode of the first welding spots and the second welding spots, stronger welding strength can be achieved by the welding spots as few as possible, the number of the welding spots is reduced as much as possible, and the eddy current loss in the stator can be further weakened, so that the heat loss of the stator core can be reduced, the magnetic field is prevented from being weakened, and the efficiency of the motor is prevented from being reduced.
In addition, according to the stator in the above technical solution provided by the present invention, the following additional technical features may be further provided:
in one possible design, the stator lamination further includes: the first connecting part is arranged on one edge of the segmented punching sheet extending along the radial direction of the stator punching sheet; the second connecting portion set up in another edge that the piece is towards piece radial extension along the stator, and the first connecting portion of a piece can cooperate with the second connecting portion of adjacent piece towards the piece.
In this design, a first connection portion and a second connection portion are provided on the segment punch. Specifically, first connecting portion set up in along the radial edge that extends of stator punching, and the second connecting portion set up in along the radial another edge that extends of stator punching, also promptly, first connecting portion and second connecting portion locate the both sides of piecemeal punching respectively along the circumference of stator punching. The first connecting portion of one piece of lamination is cooperated with the second connecting portion of another adjacent piece of lamination, so that the connection of the two pieces of lamination is realized. The plurality of the partitioned punching sheets are arranged along the circumferential direction of the stator, so that any two adjacent partitioned punching sheets are matched through the first connecting part and the second connecting part, connection among the plurality of the partitioned punching sheets is realized, and the stator is formed in a surrounding mode.
Set up first connecting portion and second connecting portion and can improve the connection stability of adjacent piecemeal towards the piece on the piecemeal towards the piece, avoid two adjacent piecemeal towards the piece and take place to rock.
In one possible design, a plurality of stator laminations are stacked to form a stator core; the thickness of the stator punching sheet is H1 along the axial direction of the stator core, the thickness of the stator core is H2, at least two welding points are arranged on one edge of the stator core extending along the radial direction of the stator, the distance between every two adjacent welding points is D along the axial direction of the stator core, H1, H2 and D meet the requirement, and D/H1 is larger than H2/D and is not larger than H2/H1.
In this design, the following description is given by way of example with a weld provided on each layer of stator laminations.
The quantity of welding point is positive correlation's relation with the thickness of stator punching, and in order to guarantee the connection stability of two adjacent piecemeal punching, the thickness of stator punching is big more, and the quantity of welding point is more, has 10 welding points on 1 stator punching for example. However, as the number of stacked stator laminations increases, the thickness of the stator core increases, and the stability of both ends of the stator core in the axial direction is worse, so that as the thickness of the stator core increases, the number of welding points on each stator lamination also needs to increase. Illustratively, when the number of the stator laminations is 5, the number of the welding points on each stator lamination is 10, and when the number of the stator laminations is 10, the number of the welding points on each stator lamination is 12.
Through the thickness of injecing stator punching, stator core's thickness and the proportional relation of the interval between two adjacent welding points, can reduce the quantity of welding point on guaranteeing welding strength's basis, avoid resulting in too much eddy current loss to produce because of the solder joint is too much.
In one possible embodiment, the first connecting part is designed as a projection and the second connecting part is designed as a recess adapted to the projection.
In this design, first connecting portion are constructed as protruding piece, and the second connecting portion are constructed as the recess, that is to say, be unsmooth complex structure between first connecting portion and the second connecting portion, recess and protruding looks adaptation realize the connection cooperation of first connecting portion and second connecting portion.
Through setting up first connecting portion as protrusion, set up second connecting portion as with protrusion matched with recess, made between first connecting portion and the second connecting portion form unsmooth complex structure, promoted the connection reliability, reduced the processing degree of difficulty.
In one possible design, any of the plurality of segment punches includes: a tooth portion; the yoke part is arranged on one side of the tooth part, which is far away from the axle center of the stator; the yoke part comprises an inner contour section extending along the circumferential direction of the stator punching sheet, the inner contour section comprises a first contour section and a second contour section which are connected, one end of the first contour section is connected with the tooth root of the tooth part, and the other end of the first contour section is connected with the second contour section; the first contour section is a straight line section, and the second contour section is an arc line section.
In this design, the yoke portion is equipped with the interior profile section that extends along the circumference of stator punching towards the inboard of stator, specifically, interior profile section begins in the tooth root of tooth portion, ends in the yoke portion along the limit of stator punching radial extension, and the piece punching is equipped with interior profile section respectively in the both sides of tooth portion.
In particular, the inner profile section comprises a first profile section and a second profile section, the first profile section being connected to the second profile section. One end of the first profile section is connected with the tooth root of the tooth part, the other end of the first profile section is connected with the second profile section, one end of the second profile section is connected with the first profile section, and the other end of the second profile section is connected with the edge of the yoke part, which extends along the radial direction of the stator punching sheet. The first contour segment and the second contour segment are different in shape, specifically, the first contour segment is a straight line segment, and the second contour segment is an arc line segment.
Because the second profile section is connected with the edge of the yoke part, which extends along the radial direction of the stator punching sheet, the edge of the inner periphery of the yoke part, which is close to the radial direction, is of an arc structure, and when two adjacent blocking punching sheets are spliced, the splicing position of the two adjacent blocking punching sheets, which is positioned on the inner periphery of the yoke part, is of an arc angle.
If the inner periphery of the yoke portion is a straight line segment, when two adjacent blocking punching sheets are spliced, the spliced positions of the two adjacent blocking punching sheets located on the inner periphery of the yoke portion form an included angle, and the width of the yoke portion located at the included angle is small, so that the structural stability of the stator punching sheet is poor. When the stator is assembled with other components, the stator punching sheet is easily extruded and deformed.
According to the invention, the splicing position of two adjacent segmented laminations, which is positioned on the inner periphery of the yoke part, is set to be an arc angle, so that the problem of poor structural stability caused by the excessively small width of the yoke part can be effectively solved, the stator laminations are not easy to deform on the basis of ensuring the structure of the stator laminations, and the increase of the loss of a stator core is avoided. Moreover, because the stator punching sheet is not easy to deform, the gap between the stator and the rotor is not easy to change, and the problem of noise increase is avoided.
In one possible design, the stator can cooperate with the rotor; the length of the first profile section is L2, the length of the second profile section is L3, the number of pole pairs of the rotor is P, wherein the relationship of L2, L3 and P satisfies: 0.4-1.9 of (L2/L3)/P.
In this design, when the length of the second profile section is too large, the length of the first profile section is small, and the space of the stator slot is reduced. When the length of the second profile section is too small, the length of the first profile section is large, and the yoke part has a position with a small width. Therefore, the length ratio of the first contour segment to the second contour segment needs to be adjusted, and the yoke part is prevented from generating a position with a smaller width on the basis of ensuring the space of the stator slot. In addition, the proportion of the first contour segment and the second contour segment also influences the magnetic flux saturation, so that the proportion of the first contour segment and the second contour segment and the pole pair number of the rotor are combined to limit 0.4 ≦ (L2/L3)/P ≦ 1.9, and the problem of magnetic flux saturation is avoided.
In one possible design, the stator further comprises: and the aluminum coil is wound on the tooth part.
In this design, the material of the coil wound around the tooth portion is limited, the coil is made of an aluminum material, that is, the coil is formed by winding an aluminum wire around the tooth portion, the unit price of the aluminum wire is low, and the aluminum wire is used as the coil, so that the material cost of the motor can be reduced for the most part.
In one possible design, the outer diameter of the stator punching sheet is phi 1, the inner diameter of the stator punching sheet is phi 2, and the relation between phi 1 and phi 2 satisfies the following conditions: 0.63 is more than or equal to phi 2/phi 1 is more than or equal to 0.48.
In this design, the relationship between the outer diameter and the inner diameter of the stator lamination is further defined. It can understand, the ratio between the internal diameter of stator punching and the external diameter of stator punching can produce certain influence to the performance of motor, specifically, can all produce the influence to heat dissipation, magnetic flux density and the whole weight of motor, for each parameter of balanced motor, makes the motor have higher price/performance ratio, prescribes a limit to certain within range with the ratio between the internal diameter of stator punching and the external diameter of stator punching.
Specifically, the outer diameter of the stator punching sheet is phi 1, the inner diameter of the stator punching sheet is phi 2, and the relationship between phi 1 and phi 2 satisfies: 0.63 is more than or equal to phi 2/phi 1 is more than or equal to 0.48.
The outer diameter of the stator punching sheet can be 101.15mm, and the inner diameter of the stator punching sheet can be 53.3 mm.
The ratio range between the inner diameter of the stator punching sheet and the outer diameter of the stator punching sheet is limited, so that the ratio between the inner diameter of the stator punching sheet and the outer diameter of the stator punching sheet is greater than or equal to 0.48 and less than or equal to 0.63, each parameter of the motor can reach an ideal range, and the motor has high cost performance.
In a second aspect, the present invention provides an electric machine comprising: a stator assembly comprising a stator as in any possible design of the first aspect and windings wound on the stator; and a rotor disposed within the stator.
In one possible design, the rotor is taken in the radial direction of the rotor, the outer contour of the cross section of the rotor being circular.
In this design, the rotor is taken in the radial direction of the rotor, the cross section of the rotor in the radial direction may or may not be a regular circle, and a circle passing through the outermost contour of the rotor is set as a contour circle, that is, a contour circle of the radial cross section of the rotor passes through a point or a line of the radial cross section of the rotor farthest from the center of the circle, the contour circle passes through the axis of the rotor, and if the radial cross section of the rotor is a regular circle, the contour circle coincides with the outer edge of the radial cross section of the rotor.
Further, the outer contour of the rotor may be circular. The outer contour of the rotor is set to be circular in the working process of the motor, so that the wind abrasion loss generated in the rotating process of the rotor can be effectively reduced, and the working efficiency of the motor is improved.
In one possible design, the electric machine further comprises: and the magnetic flux guide grooves penetrate through the rotor along the axial direction of the motor.
In this design, the rotor is also provided with a plurality of flux guide slots. Specifically, the rotor is formed by stacking a plurality of rotor punching sheets, a plurality of magnetic flux guide grooves are formed in any one of the rotor punching sheets, and the magnetic flux guide grooves are communicated and distributed in the rotor punching sheets along the axial direction of the motor, namely, the magnetic flux guide grooves are communicated and distributed in the rotor punching sheets along the axial direction of the motor. It is understood that during operation of the machine, radial electromagnetic waves are generated, which cause increased noise. In order to improve the noise problem of the motor, a plurality of magnetic flux guide grooves are arranged on the rotor in a penetrating mode along the axial direction of the motor, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave is further reduced.
The rotor is provided with the plurality of magnetic flux guide grooves, and the magnetic flux guide grooves are distributed on the rotor in a penetrating manner along the axial direction of the motor, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave is further reduced.
In one possible design, the rated torque of the motor is T1, the inner diameter of the stator is Φ 3, and the torque per unit volume of the rotor is T2, where T1, Φ 3, and T2 satisfy:
5.18×10-7≤T1×Φ3-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
in this design, the range of the combined variables among the rated torque of the motor, the inner diameter of the stator lamination, and the unit volume torque of the rotor is limited. The output torque of the motor can meet the requirements of equipment arranged on the motor by limiting the range of the combined variable.
Specifically, the rated torque of the motor is T1, the inner diameter of the stator punching sheet is Φ 3, and the unit volume torque of the rotor is T2, wherein T1, Φ 3 and T2 satisfy:
5.18×10-7≤T1×Φ3-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
the combined variable of the rated torque of the motor, the inner diameter of the stator punching sheet and the unit volume torque of the rotor is limited to be more than or equal to 5.18 multiplied by 10-7And is not more than 1.17X 10-6And a torque per unit volume of the rotor is limited to 5kN m or more-3And not more than 45kN · m-3Can make the output torque of the motor meetThe requirements of the equipment in which the motor is arranged.
In a third aspect, the present invention provides a compressor comprising: an electric machine as in any possible design of the second aspect; and a compression part, to which the motor is connected.
In a fourth aspect, the present invention provides an electrical device, comprising: an apparatus main body; and the compressor in the third aspect, the compressor being connected to the apparatus main body.
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 shows a schematic structural view of a stator of one embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a partitioning sheet according to an embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a stator lamination of an embodiment of the invention;
FIG. 4 illustrates a schematic structural view of a rotor sheet according to an embodiment of the present invention;
fig. 5 shows a schematic configuration of a compressor according to another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:
100 stators, 110 stator punches, 111 teeth, 1111 first tooth shoes, 1112 second tooth shoes, 112 yokes, 113 first connecting parts, 114 second connecting parts, 115 segmented punching sheets, 120 stator punching sheets, 121 groove bodies, 122 avoidance notches, 123 first profile sections, 124 second profile sections, 130 welding points, 200 rotors, 210 rotor punching sheets, 211 first magnetic steel grooves, 212 second magnetic steel grooves, 300 compressors, 310 compression parts, 311 cylinders, 312 pistons, 320 crankshafts, 330 main bearings and 340 auxiliary bearings.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A stator, a motor, a compressor, and an electric device provided according to some embodiments of the present invention are described below with reference to fig. 1 to 5.
Referring to fig. 1 and 5, in some embodiments of the present invention, a stator 100 is provided, including: the stator structure comprises a plurality of stator punching blocks 110 and at least two welding points 130, wherein the at least two welding points 130 are arranged on the edge of the stator punching block 110 extending along the radial direction of the stator 100, and the welding points 130 are used for connecting two adjacent stator punching blocks 110; the stator segment 110 includes: the stator punching sheet 120 is formed by splicing a plurality of laminated segmented punching sheets 115 along the circumferential direction of the stator 100; the welding point 130 includes: the first welding point is arranged on one edge of the stator punching block 110 extending along the radial direction; the second welding points are disposed at the other edge of the stator punch 110 extending along the radial direction of the stator 100, and the first welding points and the second welding points are distributed in a staggered manner along the axial direction of the stator 100.
In the stator 100 provided by the invention, in order to reduce the processing difficulty of the stator 100 and improve the slot fullness rate of the motor, the stator 100 is designed into a split structure. The stator 100 includes a plurality of stator segments 110. Through setting up stator blunting block 110 to a plurality ofly to when processing stator 100, only process a plurality of stator blunting block 110 can, assemble a plurality of stator blunting block 110 parts into stator 100 again, compare in processing a complete stator 100, the degree of difficulty of processing stator blunting block 110 part reduces, thereby manufacturing cost has been reduced, this kind of stator 100 simple structure, and the automated production to stator 100 can be realized to the automated production of automation line.
And, design stator 100 for split type mosaic structure, be convenient for realize the winding of coil and establish, can establish the back at the coil winding and install two adjacent piecemeal punching sheets 115 again, reduce the degree of difficulty of establishing the coil, consequently can be under the same circumstances of stator 100 size, establish more coils around, improve the winding of coil and establish the number of turns, be favorable to improving the groove fullness rate of motor. On the basis of not improving the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
Two adjacent stator punching blocks 110 are connected in a welding mode, a welding point 130 is arranged between the two adjacent stator punching blocks 110, namely the two adjacent stator punching blocks 110 are connected in a spot welding mode, compared with the connection welding mode, the two adjacent stator punching blocks 110 are connected in the spot welding mode, the specific power loss generated by pulse spot welding is lower, the relative magnetic permeability of a motor sample is higher, the magnetic leakage is reduced, the eddy current loss in the stator 100 can be weakened, the heat loss of a stator core can be reduced, the magnetic field is prevented from being weakened, and the reduction of the motor efficiency is avoided.
The plurality of segmented laminations 115 are stacked to form the segmented laminations 115, the segmented laminations 115 are already processed into an integral structure, and for example, the plurality of segmented laminations 115 can be axially fixed by rivet pieces, so that welding points 130 do not need to be arranged on each stator lamination 120, and for example, the welding points 130 can be arranged on the stator laminations 120 at different layers at intervals. When the thickness of the stator punching sheet 120 is small, the welding points 130 may be arranged at intervals on the stator punching sheets 120 of different layers, and when the thickness of the stator punching sheet 120 is large, the welding points 130 are arranged between two adjacent segmented punching sheets 115 in each layer of the stator punching sheet 120.
The first welding points and the second welding points are respectively located on two sides of the blocking punching sheet 115, wherein the first welding points and the second welding points are distributed in a staggered mode along the axial direction of the stator 100, so that the blocking punching sheet 115 is cut along the radial direction of the stator 100, and the first welding points and the second welding points are not in the same section any more. The welding positions on the two sides of the blocking punching sheet 115 are arranged in a staggered mode, and the welding strength of two adjacent blocking punching sheets 115 can be effectively improved.
Because the welding strength of the two adjacent stator punching blocks 110 can be improved by the staggered distribution of the first welding spots and the second welding spots, stronger welding strength can be achieved by the welding spots as few as possible, the welding effect can be achieved by the welding spots as few as possible, the number of the welding spots is reduced as much as possible, the eddy current loss in the stator 100 can be further weakened, the heat loss of the stator core can be reduced, the magnetic field is prevented from being weakened, and the reduction of the motor efficiency is avoided.
In one possible application, two adjacent segmented laminations 115 are welded by an adaptive pulse laser spot welding technique, which can interrupt welding and reduce eddy current loss caused by continuous welding.
In one possible embodiment, the stator lamination 120 includes: the first connecting portion 113 is arranged at one edge of the segmented punching sheet 115 extending along the radial direction of the stator punching sheet 120; the second connecting portion 114 is disposed at another edge of the segmented punching sheet 115 extending along the radial direction of the stator punching sheet 120, and the first connecting portion 113 of one segmented punching sheet 115 can be matched with the second connecting portion 114 of an adjacent segmented punching sheet 115.
In this embodiment, the first connection portion 113 and the second connection portion 114 are provided on the segment sheet 115. Specifically, the first connecting portion 113 is disposed at one edge extending along the radial direction of the stator lamination 120, and the second connecting portion 114 is disposed at the other edge extending along the radial direction of the stator lamination 120, that is, the first connecting portion 113 and the second connecting portion 114 are disposed at two sides of the segmented lamination 115 along the circumferential direction of the stator lamination 120. The first connecting portion 113 of one piece of block punching sheet 115 is matched with the second connecting portion 114 of another adjacent piece of block punching sheet 115, so that the connection of the two piece of block punching sheets 115 is realized. The plurality of segmented punching sheets 115 are arranged along the circumferential direction of the stator 100, so that any two adjacent segmented punching sheets 115 are matched through the first connecting portion 113 and the second connecting portion 114, connection among the plurality of segmented punching sheets 115 is achieved, and the stator 100 is formed in a surrounding mode.
The first connecting portion 113 and the second connecting portion 114 are arranged on the blocking punching sheet 115, so that the connection stability of the adjacent blocking punching sheet 115 can be improved, and the adjacent two blocking punching sheets 115 are prevented from shaking.
As shown in fig. 1, 2 and 3, in one possible embodiment, a plurality of stator laminations 120 are stacked to form a stator core; the thickness of the stator punching sheet 120 is H1 along the axial direction of the stator core, the thickness of the stator core is H2, at least two welding points 130 are arranged on one edge of the stator core extending along the radial direction of the stator 100, the distance between every two adjacent welding points 130 is D along the axial direction of the stator core, H1, H2 and D meet the requirement that D/H1 is larger than H2/D and is not larger than H2/H1.
In this embodiment, the following description is given by way of example with a welding point 130 provided on each layer of stator lamination 120.
The number of the welding points 130 is in a positive correlation with the thickness of the stator punching sheet 120, and in order to ensure the connection stability of two adjacent segmented punching sheets 115, the larger the thickness of the stator punching sheet 120 is, the larger the number of the welding points 130 is, for example, 10 welding points 130 are provided on 1 stator punching sheet 120. However, as the number of stacked stator laminations 120 increases, the thickness of the stator core increases, and the stability of both ends of the stator core in the axial direction is poor, so that as the thickness of the stator core increases, the number of welding points 130 on each stator lamination 120 also increases. For example, when the number of the stator laminations 120 is 5, the number of the welding points 130 on each stator lamination 120 is 10, and when the number of the stator laminations 120 is 10, the number of the welding points 130 on each stator lamination 120 is 12.
Through the proportional relation of the thickness of the stator punching sheet 120, the thickness of the stator core and the distance between two adjacent welding points 130, the number of the welding points 130 can be reduced on the basis of ensuring the welding strength, the generation of excessive eddy current loss caused by excessive welding points is avoided, the eddy current loss in the stator 100 is further weakened, the heat loss of the stator core can be reduced, the weakening of a magnetic field is prevented, and the reduction of the motor efficiency is avoided.
In one possible embodiment, as shown in fig. 2, the first connection portion 113 is configured as a projection and the second connection portion 114 is configured as a recess adapted to the projection.
In this embodiment, the first connecting portion 113 is configured as a protrusion, and the second connecting portion 114 is configured as a groove, that is, a concave-convex fit structure is formed between the first connecting portion 113 and the second connecting portion 114, and the groove is matched with the protrusion to realize the connection fit of the first connecting portion 113 and the second connecting portion 114.
Through setting up first connecting portion 113 as protruding piece, set up second connecting portion 114 as with protruding piece matched with recess, made between first connecting portion 113 and the second connecting portion 114 form unsmooth complex structure, promoted the connection reliability, reduced the processing degree of difficulty.
With reference to fig. 2 and fig. 3, in a possible embodiment, any of the segment stampers 115 in the plurality of segment stampers 115 includes: a tooth part 111 and a yoke part 112, wherein the yoke part 112 is arranged on one side of the tooth part 111, which is far away from the axis of the stator 100; the yoke portion 112 includes an inner profile section extending in a circumferential direction of the stator lamination 120, the inner profile section includes a first profile section 123 and a second profile section 124 connected to each other, one end of the first profile section 123 is connected to a tooth root of the tooth portion 111, and the other end of the first profile section 123 is connected to the second profile section 124; the first contour segment 123 is a straight line segment, and the second contour segment 124 is an arc segment.
In this embodiment, the yoke portion 112 is provided with an inner contour section extending in the circumferential direction of the stator lamination 120 toward the inner side of the stator 100, specifically, the inner contour section starts from the tooth root of the tooth portion 111 and ends at the edge of the yoke portion 112 extending in the radial direction of the stator lamination 120, and the segmented laminations 115 are provided with inner contour sections on both sides of the tooth portion 111.
In particular, the inner contour segment comprises a first contour segment 123 and a second contour segment 124, the first contour segment 123 being connected to the second contour segment 124. One end of the first profile segment 123 is connected to the tooth root of the tooth 111, the other end of the first profile segment 123 is connected to the second profile segment 124, one end of the second profile segment 124 is connected to the first profile segment 123, and the other end of the second profile segment 124 is connected to the edge of the yoke portion 112 extending in the radial direction of the stator lamination 120. The first contour segment 123 and the second contour segment 124 have different shapes, specifically, the first contour segment 123 is a straight line segment, and the second contour segment 124 is an arc line segment.
Because the second contour segment 124 is connected with the edge of the yoke portion extending along the radial direction of the stator punching sheet, the edge of the inner circumference of the yoke portion 112 close to the radial direction is in an arc-shaped structure, and therefore when two adjacent segmented punching sheets 115 are spliced, the spliced position of the two adjacent segmented punching sheets 115 on the inner circumference of the yoke portion 112 is in an arc angle.
If the inner circumference of the yoke portion 112 is a straight line segment, when two adjacent segmented laminations 115 are spliced, an included angle is formed at the splicing position of the two adjacent segmented laminations 115 at the inner circumference of the yoke portion 112, and the width of the yoke portion 112 at the included angle is smaller, so that the structural stability of the stator laminations 120 is poorer. When the stator is assembled with other components, the stator lamination 120 is easily deformed by being pressed.
In the invention, the splicing position of the two adjacent segmented laminations 115 at the inner periphery of the yoke part 112 is set to be an arc angle, so that the problem of poor structural stability caused by the excessively small width of the yoke part 112 can be effectively solved, the stator laminations 120 are not easy to deform on the basis of ensuring the structure of the stator laminations 120, and the increase of the loss of a stator core is avoided. Moreover, since the stator punching sheet 120 is not easy to deform, the gap between the stator and the rotor is not easy to change, thereby avoiding the problem of noise increase.
In a possible embodiment, the stator can cooperate with the rotor; the length of the first profile section 123 is L2, the length of the second profile section 124 is L3, the number of pole pairs of the rotor is P, wherein the relationship of L2, L3 and P satisfies: 0.4-1.9 of (L2/L3)/P.
In this embodiment, when the length of the second contour segment 124 is too large, the length of the first contour segment 123 is small, and the space of the stator slot is reduced. When the length of the second profile section 124 is too small, the length of the first profile section 123 is large, and the yoke 112 will appear to have a small width. Therefore, the length ratio of the first contour segment 123 and the second contour segment 124 needs to be adjusted to avoid the position of the yoke portion 112 with a smaller width on the basis of ensuring the space of the stator slot. In addition, the ratio of the first contour segment 123 and the second contour segment 124 also affects the flux saturation, so that the ratio of the first contour segment 123 and the second contour segment 124 and the pole pair number of the rotor are combined to define 0.4 ≦ (L2/L3)/P ≦ 1.9, and the flux saturation problem is avoided.
As shown in fig. 2, in one possible embodiment, a slot 121 is disposed on a side of the yoke 112 away from the tooth 111, that is, the slot 121 is disposed on an outer circumference of the stator 100, and the slot 121 can increase a distance between the stator 100 and another component located on an outer circumference side of the stator 100, thereby facilitating oil return of the compressor 300, improving smoothness of the oil return, and facilitating improvement of operation stability of the compressor 300.
A large number of coils are usually wound in the stator slots, so that the space for the oil supply liquid to flow in the stator slots is small, and the flow area of the return oil can be increased by arranging the slot body 121 on the stator 100.
The groove body 121 includes a trapezoidal groove. The trapezoidal groove body 121 is convenient to clamp with the tool, so that the tool can drive the plurality of partitioned punching sheets 115 to move. In the winding process, the plurality of segmented punching sheets 115 are linearly distributed, and after the winding is completed, the fixture drives the plurality of segmented punching sheets 115 to surround to form the stator punching block 120. The groove body 121 is arranged to be a trapezoidal groove, so that convenience of the tool for driving the blocking punching sheet 115 to move can be improved.
In one possible application, the plurality of grooves 121 other than the trapezoidal groove 121 are rectangular. Through setting up at least one cell body 121 into the rectangular channel, the rectangular channel can regard as discernment groove, can realize the location to the motor through discernment groove to be convenient for assemble to the compressor to the motor.
In one possible embodiment, the yoke portion 112 is taken along a radial direction of the stator punching sheet 120, and the slot 121 passes through a center line of a cross section of the yoke portion 112.
In this embodiment, the groove 121 passes through the center line of the yoke 112, so that the oil return effect can be further improved, the oil return smoothness is improved, and the operation stability of the compressor 300 is improved.
In a possible embodiment, the stator 100 further comprises: an aluminum coil is wound around the tooth 111.
In this embodiment, the material of the coil wound around the tooth 111 is limited, the coil is made of aluminum, that is, the coil is formed by winding an aluminum wire around the tooth 111, the unit price of the aluminum wire is low, and the aluminum wire is used as the coil, so that the material cost of the motor can be reduced in most cases.
With reference to fig. 2 and fig. 3, in a possible embodiment, the outer diameter of the stator lamination 120 is Φ 1, the inner diameter of the stator lamination 120 is Φ 2, and a relationship between Φ 1 and Φ 2 satisfies: 0.63 is more than or equal to phi 2/phi 1 is more than or equal to 0.48.
In this embodiment, the relationship between the outer diameter and the inner diameter of the stator lamination 120 is further defined. It can be understood that, the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 has a certain influence on the performance of the motor, specifically, the heat dissipation, the magnetic flux density and the overall weight of the motor are all influenced, in order to balance various parameters of the motor, the motor has a high cost performance, and the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 is limited in a certain range.
Specifically, the outer diameter of the stator lamination 120 is Φ 1, the inner diameter of the stator lamination 120 is Φ 2, and the relationship between Φ 1 and Φ 2 satisfies: 0.63 is more than or equal to phi 2/phi 1 is more than or equal to 0.48.
The outer diameter of the stator lamination 120 may be 101.15mm, and the inner diameter of the stator lamination 120 may be 53.3 mm.
By limiting the range of the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120, the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 is greater than or equal to 0.48 and less than or equal to 0.63, so that each parameter of the motor can reach an ideal range, and the motor has high cost performance.
As shown in fig. 5, in some embodiments of the present invention, there is provided a motor including: a stator assembly and a rotor 200, wherein the stator assembly comprises the stator 100 and a winding wound on the stator 100 as in any one of the above possible embodiments; the rotor 200 is disposed inside the stator 100.
The motor thus has all the benefits of the stator 100 provided by any of the possible embodiments described above.
The stator 100 is provided with stator slots therein, and the rotor 200 is disposed in the stator slots, and specifically, the stator 100 is disposed coaxially with the rotor 200, and the rotor 200 is rotatable with respect to the stator 100. Further, the stator 100 is also provided with windings, specifically, the windings are arranged on the teeth of the stator 100. Stator 100 is including the stator punching sheet 120 of range upon range of setting, is equipped with a plurality of tooth portions 111 on the stator punching sheet 120, and the setting of range upon range of tooth portion 111 of a plurality of stator punching sheets 120 has constituted a plurality of stator 100 teeth. The stator 100 teeth are provided inside the stator 100 and are disposed toward the rotor 200. The coils are wound on the teeth of the stator 100 to form windings, the windings are used for generating magnetic induction lines in a power-on state, and in the process that the rotor 200 rotates relative to the stator 100, namely, the rotor 200 rotates relative to the windings, cuts the magnetic induction lines, and generates force for driving the rotor 200 to rotate, so that the motor can run.
As shown in fig. 2 and fig. 5, in a possible embodiment, the partitioning sheet 115 further includes: the avoidance gap 122 is provided on the surface of the tooth portion 111 facing the rotor 200, and a distance between the avoidance gap 122 and the first tooth shoe 1111 of the tooth portion 111 is smaller than a distance between the avoidance gap 122 and the second tooth shoe 1112 of the tooth portion 111, wherein the rotor 200 sequentially passes through the first tooth shoe 1111 and the second tooth shoe 1112 in the rotation direction of the rotor 200.
In this embodiment, the stator 100 further includes an avoidance gap 122, and the avoidance gap 122 is provided on the surface of the tooth portion 111 for facing the rotor 200. Tooth 111 includes a first tooth shoe 1111 and a second tooth shoe 1112, and rotor 200 passes first tooth shoe 1111 and second tooth shoe 1112 in sequence in a rotation direction of rotor 200. The distance between the avoidance gap 122 and the first tooth shoe 1111 is smaller than the distance between the avoidance gap 122 and the second tooth shoe 1112, that is, the avoidance gap 122 is close to the first tooth shoe 1111 side.
By providing the relief notch 122 on the surface of the tooth 111 facing the rotor 200, the relief notch 122 can be used to relieve a protruding part on the rotor 200 during the process of assembling the stator 100 and the rotor 200, thereby avoiding assembly interference.
Specifically, the avoidance notch 122 is formed in the stator 100, so that the space phase of the air gap flux guide of the stator 100 and the rotor 200 can be effectively adjusted, the phase of the first-order magnetic guide tooth harmonic wave of the magnetic field is changed and is mutually offset with the armature magnetic potential harmonic wave, the radial electromagnetic force of the motor is obviously reduced, and the noise generated during the operation of the motor is favorably reduced.
In a possible embodiment, the rotor 200 is taken along a radial direction of the rotor 200, and an outer contour of a cross section of the rotor 200 is circular.
In this embodiment, the rotor 200 is taken along the radial direction of the rotor 200, the cross section of the rotor 200 in the radial direction may be a regular circle or may not be a regular circle, and a circle passing through the outermost contour of the rotor 200 is set as a contour circle passing through a point or a line where the radial cross section of the rotor 200 is farthest from the center of the circle, the contour circle passing through the axis of the rotor 200, and if the radial cross section of the rotor 200 is a regular circle, the contour circle coincides with the outer edge of the radial cross section of the rotor 200.
Further, the outer contour of the rotor 200 may be circular. It can be understood that, in the working process of the motor, the rotor 200 is in a rotating state, and the outer contour of the rotor 200 is set to be circular, so that the wind abrasion loss generated in the rotating process of the rotor 200 can be effectively reduced, and the working efficiency of the motor is improved.
In a possible embodiment, as shown in fig. 4 and 5, the motor further includes: and a plurality of flux guide grooves provided in the rotor 200 to penetrate in the axial direction of the motor.
In this embodiment, the rotor 200 is also provided with a plurality of flux guide grooves. Specifically, the rotor 200 is formed by stacking a plurality of rotor sheets 210, and a plurality of flux guide slots are provided on any one of the rotor sheets 210, and the flux guide slots are distributed in the rotor sheets 210 in a penetrating manner along the axial direction of the motor, that is, distributed in the rotor sheets 210 in a penetrating manner along the axial direction of the motor. It is understood that during operation of the machine, radial electromagnetic waves are generated, which cause increased noise. In order to improve the noise problem of the motor, a plurality of magnetic flux guide grooves are arranged on the rotor 200 along the axial direction of the motor in a penetrating way, so that the lowest-order radial electromagnetic force wave of the motor can be reduced, and the noise caused by the radial electromagnetic force wave can be further reduced.
The plurality of magnetic flux guide grooves are formed in the rotor 200 and are distributed on the rotor 200 in a penetrating manner along the axial direction of the motor, so that the lowest-order radial electromagnetic force waves of the motor can be reduced, and the noise caused by the radial electromagnetic force waves is reduced.
The rotor punching sheet 210 is provided with a first magnetic steel groove 211 and a second magnetic steel groove 212, and the rotor 200 further comprises a first magnetic part and a second magnetic part, wherein the first magnetic part and the second magnetic part are respectively installed in the first magnetic steel groove 211 and the second magnetic steel groove 212 to form a pair of magnetic poles.
In one possible embodiment, the rated torque of the motor is T1, the inner diameter of the stator 100 is Φ 3, and the torque per unit volume of the rotor 200 is T2, where T1, Φ 3, and T2 satisfy:
5.18×10-7≤T1×Φ3-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
in this embodiment, the range of the combined variables among the rated torque of the motor, the inner diameter of the stator lamination 120, and the torque per unit volume of the rotor 200 is defined. It can be understood that the output torque of the motor is affected by the combined variable among the rated torque of the motor, the inner diameter of the stator lamination 120 and the unit volume torque of the rotor 200, and the output torque of the motor can meet the requirement of the equipment arranged in the motor by limiting the range of the combined variable.
Specifically, the rated torque of the motor is T1, the inner diameter of the stator lamination 120 is Φ 3, and the unit volume torque of the rotor 200 is T2, where T1, Φ 3, and T2 satisfy:
5.18×10-7≤T1×Φ3-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
the combined variable of the rated torque of the motor, the inner diameter of the stator punching sheet 120 and the unit volume torque of the rotor 200 is limited to be more than or equal to 5.18 multiplied by 10-7And is not more than 1.17X 10-6And the torque per unit volume of the rotor 200 is limited to 5kN m or more-3And not more than 45kN · m-3The output torque of the motor can meet the requirements of equipment arranged on the motor.
As shown in fig. 5, in an embodiment of the present invention, there is provided a compressor 300, the compressor 300 including: the compressing member 310 and the motor in any of the above possible embodiments, the motor being connected to the compressing member 310.
Specifically, the compression part 310 includes a cylinder 311 and a piston 312, in order to enable a motor to be connected to the compression part 310 and drive the compression part 310 to operate, some connecting members are further provided in the compressor 300, specifically including a crankshaft 320, a main bearing 330 and a sub-bearing 340, the motor is connected to the piston 312 through the crankshaft 320 to drive the piston 312 to move in the cylinder 311, and the main bearing 330 and the sub-bearing 340 are provided outside the crankshaft 320 to support and limit the crankshaft 320 so that the crankshaft 320 can normally rotate.
The compressor 300 proposed in this embodiment includes the motor proposed in the above embodiments, so that the compressor 300 has all the advantages of the motor provided in any one of the above possible embodiments.
In an embodiment of the present invention, an electrical apparatus is provided, the electrical apparatus including: the equipment main body and the compressor in the above embodiments, the compressor is connected to the equipment main body.
The electrical equipment provided by the embodiment comprises an equipment main body and a compressor, wherein the compressor is connected with the equipment main body, and when the electrical equipment runs, the compressor and the equipment main body are matched to run together so that the electrical equipment runs normally.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A stator, comprising:
a plurality of stator segments;
the stator plunger chip includes: the stator comprises a plurality of laminated segmented punching sheets, wherein the plurality of segmented punching sheets are spliced along the circumferential direction of the stator to form the stator punching sheet;
at least two welding points arranged on the edge of the stator punching block extending along the radial direction, wherein the welding points are used for connecting two adjacent stator punching blocks;
the welding point includes:
the first welding spot is arranged on one edge of the stator punching block extending along the radial direction of the stator;
and the second welding spots are arranged on the other edge of the stator punching block extending along the radial direction of the stator, and the first welding spots and the second welding spots are distributed in a staggered manner along the axial direction of the stator.
2. The stator according to claim 1,
the plurality of stator punching sheets are stacked to form a stator core;
the thickness of the stator punching sheet is H1, and the thickness of the stator core is H2;
the stator core is followed one edge that the stator radially extends is equipped with two at least the welding point, follows stator core's axial, adjacent two the interval of welding point is D, and H1, H2 and D satisfy, and D/H1 is less than H2/D and is less than or equal to H2/H1.
3. The stator of claim 1, wherein the stator lamination comprises:
the first connecting part is arranged on one edge of the segmented punching sheet extending along the radial direction of the stator punching sheet;
the second connecting portion are arranged on the other edge of the segmented punching sheet extending along the radial direction of the stator punching sheet, and the first connecting portion of one segmented punching sheet can be matched with the second connecting portion of the adjacent segmented punching sheet.
4. The stator of claim 2, wherein the segmented laminations comprise:
a tooth portion;
the yoke part is arranged on one side, which is far away from the axle center of the stator, in the tooth part;
the yoke comprises an inner contour section extending along the circumferential direction of the stator punching sheet, the inner contour section comprises a first contour section and a second contour section which are connected, one end of the first contour section is connected with the tooth root of the tooth part, and the other end of the first contour section is connected with the second contour section;
the first contour segment is a straight line segment, and the second contour segment is an arc line segment.
5. The stator of claim 4, wherein the stator is capable of cooperating with a rotor;
the first profile section has a length of L2, the second profile section has a length of L3, and the number of pole pairs of the rotor is P, wherein the relationship of L2, L3 and P satisfies: 0.4-1.9 of (L2/L3)/P.
6. The stator of claim 4, further comprising:
and the aluminum coil is wound on the tooth part.
7. The stator according to claim 2,
the outer diameter of the stator punching sheet is phi 1, the inner diameter of the stator punching sheet is phi 2, and the relation between phi 1 and phi 2 satisfies the following conditions: 0.63 is more than or equal to phi 2/phi 1 is more than or equal to 0.48.
8. An electric machine, characterized in that the electric machine comprises:
a stator assembly comprising a stator according to any one of claims 1 to 7 and windings wound on the stator;
a rotor disposed within the stator.
9. The electric machine of claim 8,
the rotor is cut along the radial direction of the rotor, and the outer contour of the cross section of the rotor is circular.
10. The electric machine of claim 8, further comprising:
and a plurality of flux guide grooves which are arranged on the rotor in a penetrating manner along the axial direction of the motor.
11. The electric machine of any of claims 8 to 10, wherein the electric machine has a rated torque of T1, an inner diameter of the stator is Φ 3, and a torque per unit volume of the rotor is T2, wherein T1, Φ 3, and T2 satisfy:
5.18×10-7≤T1×Φ3-3×T2-1≤1.17×10-6，
5kN·m·m-3≤T2≤45kN·m·m-3。
12. a compressor, comprising:
the electric machine of any one of claims 8 to 11; and
and the motor is connected with the compression part.
13. An electrical device, comprising:
an apparatus main body; and
the compressor of claim 12, said compressor being connected to said equipment body.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311418868.9A CN117424359A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311418759.7A CN117424358A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311419034.XA CN117424360A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202111494433.3A CN114069909A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| PCT/CN2022/129641 WO2023103666A1 (en) | 2021-12-08 | 2022-11-03 | Stator, motor, compressor, and electrical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494433.3A CN114069909A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311418759.7A Division CN117424358A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311418868.9A Division CN117424359A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311419034.XA Division CN117424360A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN114069909A true CN114069909A (en) | 2022-02-18 |
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| CN202311418759.7A Pending CN117424358A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311418868.9A Pending CN117424359A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202111494433.3A Pending CN114069909A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311419034.XA Pending CN117424360A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
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| CN202311418759.7A Pending CN117424358A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
| CN202311418868.9A Pending CN117424359A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
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| CN202311419034.XA Pending CN117424360A (en) | 2021-12-08 | 2021-12-08 | Stator, motor, compressor and electrical equipment |
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| WO (1) | WO2023103666A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114629258A (en) * | 2022-03-16 | 2022-06-14 | 安徽美芝精密制造有限公司 | Stator core, stator, motor, compressor and electrical equipment |
| WO2023103668A1 (en) * | 2021-12-08 | 2023-06-15 | 安徽美芝精密制造有限公司 | Stator, motor, compressor, and electrical device |
| WO2023103666A1 (en) * | 2021-12-08 | 2023-06-15 | 安徽美芝精密制造有限公司 | Stator, motor, compressor, and electrical device |
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| CN205846882U (en) * | 2016-07-15 | 2016-12-28 | 无锡康沃特变频电机有限公司 | A kind of stator core and there is the motor of this stator core |
| CN205911841U (en) * | 2016-07-29 | 2017-01-25 | 苏州工业园区星德胜电机有限公司 | Stator core reaches high strength brushless DC motor including this stator core |
| CN108233644A (en) * | 2017-12-14 | 2018-06-29 | 宁波德昌电机制造有限公司 | A kind of motor stator manufacture craft |
| CN109660034A (en) * | 2019-01-29 | 2019-04-19 | 艾博金电气制造（深圳）有限公司 | Magnetic core and motor with the magnetic core |
| CN112152338A (en) * | 2019-06-28 | 2020-12-29 | 广东美的环境电器制造有限公司 | Motor stator, motor with same and manufacturing method of motor stator |
| CN112467897A (en) * | 2020-11-30 | 2021-03-09 | 安徽美芝精密制造有限公司 | Motor, compressor and refrigeration plant |
| CN214314758U (en) * | 2021-01-27 | 2021-09-28 | 安徽威灵汽车部件有限公司 | Stator core, stator, motor, electric power steering system and vehicle |
| CN214412426U (en) * | 2021-01-25 | 2021-10-15 | 江阴市鑫志冲件有限公司 | High-efficiency motor stator and rotor punching sheet |
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| JP2012228133A (en) * | 2011-04-22 | 2012-11-15 | Daikin Ind Ltd | Stator core and method for manufacturing the same |
| CN108352734B (en) * | 2015-11-25 | 2019-06-04 | 三菱电机株式会社 | Rotating electrical machine and method of manufacturing the same |
| CN111181260A (en) * | 2020-02-27 | 2020-05-19 | 菲仕绿能科技(宁波)有限公司 | Permanent magnet synchronous motor stator iron core split punching piece, stator iron core and assembly method |
| CN117424358A (en) * | 2021-12-08 | 2024-01-19 | 安徽美芝精密制造有限公司 | Stator, motor, compressor and electrical equipment |
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2021
- 2021-12-08 CN CN202311418759.7A patent/CN117424358A/en active Pending
- 2021-12-08 CN CN202311418868.9A patent/CN117424359A/en active Pending
- 2021-12-08 CN CN202111494433.3A patent/CN114069909A/en active Pending
- 2021-12-08 CN CN202311419034.XA patent/CN117424360A/en active Pending
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2022
- 2022-11-03 WO PCT/CN2022/129641 patent/WO2023103666A1/en unknown
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| JP2007014129A (en) * | 2005-06-30 | 2007-01-18 | Mitsui High Tec Inc | Stator laminated core |
| JP2012205444A (en) * | 2011-03-28 | 2012-10-22 | Daikin Ind Ltd | Stator core, method for manufacturing the same, and motor |
| CN103427508A (en) * | 2012-05-17 | 2013-12-04 | 深圳市配天电机技术有限公司 | Segmental skew notch concentrated winding motor, electric generator and electric motor |
| CN104518578A (en) * | 2014-12-23 | 2015-04-15 | 广东威灵电机制造有限公司 | Stator iron core and stator |
| CN205846882U (en) * | 2016-07-15 | 2016-12-28 | 无锡康沃特变频电机有限公司 | A kind of stator core and there is the motor of this stator core |
| CN205911841U (en) * | 2016-07-29 | 2017-01-25 | 苏州工业园区星德胜电机有限公司 | Stator core reaches high strength brushless DC motor including this stator core |
| CN108233644A (en) * | 2017-12-14 | 2018-06-29 | 宁波德昌电机制造有限公司 | A kind of motor stator manufacture craft |
| CN109660034A (en) * | 2019-01-29 | 2019-04-19 | 艾博金电气制造（深圳）有限公司 | Magnetic core and motor with the magnetic core |
| CN112152338A (en) * | 2019-06-28 | 2020-12-29 | 广东美的环境电器制造有限公司 | Motor stator, motor with same and manufacturing method of motor stator |
| CN112467897A (en) * | 2020-11-30 | 2021-03-09 | 安徽美芝精密制造有限公司 | Motor, compressor and refrigeration plant |
| CN214412426U (en) * | 2021-01-25 | 2021-10-15 | 江阴市鑫志冲件有限公司 | High-efficiency motor stator and rotor punching sheet |
| CN214314758U (en) * | 2021-01-27 | 2021-09-28 | 安徽威灵汽车部件有限公司 | Stator core, stator, motor, electric power steering system and vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023103668A1 (en) * | 2021-12-08 | 2023-06-15 | 安徽美芝精密制造有限公司 | Stator, motor, compressor, and electrical device |
| WO2023103666A1 (en) * | 2021-12-08 | 2023-06-15 | 安徽美芝精密制造有限公司 | Stator, motor, compressor, and electrical device |
| CN114629258A (en) * | 2022-03-16 | 2022-06-14 | 安徽美芝精密制造有限公司 | Stator core, stator, motor, compressor and electrical equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117424360A (en) | 2024-01-19 |
| CN117424358A (en) | 2024-01-19 |
| CN117424359A (en) | 2024-01-19 |
| WO2023103666A1 (en) | 2023-06-15 |
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Application publication date: 20220218 |