CN103493338A - Permanent magnet-type rotating electric machine - Google Patents
Permanent magnet-type rotating electric machine Download PDFInfo
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- CN103493338A CN103493338A CN201280019610.5A CN201280019610A CN103493338A CN 103493338 A CN103493338 A CN 103493338A CN 201280019610 A CN201280019610 A CN 201280019610A CN 103493338 A CN103493338 A CN 103493338A
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- iron core
- segmentation iron
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
- H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
- H02K41/033—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type with armature and magnets on one member, the other member being a flux distributor
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Linear Motors (AREA)
- Manufacture Of Motors, Generators (AREA)
- Synchronous Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Provided is a permanent magnet-type rotating electric machine in which a stator (20) is configured such that a plurality of split cores (21a, 21aa) each having teeth (22) facing a rotor (30) are joined such that split cores adjacent to each other in the circumferential direction are able to rotate about a common axis in the direction of the axis of rotation of the permanent magnet-type rotating electric machine, a permanent magnet or magnetic member (23) is provided to a substantially middle part of the teeth of the split cores, and each of the split cores has a magnet structure of increased magnetoresistance in which the core on the opposite side of the rotor in the radial direction of the middle part of the teeth has either a thin shape or is eliminated.
Description
Technical field
The present invention relates to permanent-magnet rotary electric machine, the manufacture method of the miniaturization of the motor that particularly the torque density raising brings and the stator of permanent-magnet rotary electric machine.In addition, the manufacture method that also relates to permanent magnet type linear motor and mover thereof.
Background technology
The electric rotating machines such as industry use, vehicle mounted motor require the change on a large scale of miniaturization, high speed, operating speed scope.Motor as these requirements of response, proposed the simple and firm motor structure of rotor configuration, and in this motor structure, stator side has adopted armature winding and permanent magnet.In addition, adopted the motor of permanent magnet for stator side, in order to enlarge its operating speed scope, in order to reduce armature inductance, proposed magnet is embedded in near the motor (for example, referring to following patent documentation 1～3) tooth section central portion.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2002-199679 communique
Patent documentation 2: No. 2010/0072832 specification of U.S. Patent Application Publication
Patent documentation 3: No. 2009/0091198 specification of U.S. Patent Application Publication
Summary of the invention
The problem that invention will solve
Before, for example the device of above-mentioned patent documentation 1, be permanent magnet to be embedded in to the structure of tooth central portion, owing near the core back of the body (core back) section, not burying permanent magnet underground, so the inverted rotor side radially (opposition side of rotor) at permanent magnet, produced short circuit flux.Therefore, torque density reduces, the problem that exists motor to maximize.In addition, owing at the tooth central portion, having adopted permanent magnet, so cogging torque (cogging torque) increases, and becomes vibrative principal element.
In addition, in above-mentioned patent documentation 2,3, tooth is divided into to two halves, form stator with the iron core of コ font (or U font), but, due to the iron core that adopts the コ font, so can not improving, the activity coefficient of winding cause torque density to reduce, maybe can not reduce the gap opening width, so exist the problem such as cogging torque increase.
The present invention makes in order to address the above problem, but its objective is the manufacture method of the stator of the permanent-magnet rotary electric machine that can realize high torque (HT), Low gullet torque etc. in the motor that is provided at High Rotation Speed and this permanent-magnet rotary electric machine.
In addition, the present invention also aims to provide the manufacture method of the mover of therewith associated permanent magnet type linear motor, permanent magnet type linear motor.
Solve the technical scheme of problem
The present invention relates to permanent-magnet rotary electric machine etc., in permanent-magnet rotary electric machine, stator is configured to, having respectively a plurality of segmentation iron cores with rotor tooth in opposite directions is joined into and makes the circumferentially adjacent segmentation iron core each other can be around the axial common axle rotation of the rotation of permanent-magnet rotary electric machine, substantial middle section at the tooth of above-mentioned each segmentation iron core is provided with permanent magnet or magnetic parts, the iron core of the rotor opposition side radially of the central portion that above-mentioned each segmentation iron core is tooth becomes the arbitrary structure in the structure of thin-walled shape and iron-core-free, and there is the magnetic construction that increases magnetic resistance.
The invention effect
According to the present invention, be configured to the magnetic construction that the magnetic resistance of the radially inverted rotor side of tooth central authorities increases, thereby can reduce the short circuit flux of the radially inverted rotor side of permanent magnet, improve torque density.In addition, by the tooth by adjacent, become and link structure, can improve the workability of coiling, realize high-density-coiling, also can reduce cogging torque.
The accompanying drawing explanation
Fig. 1 is the cutaway view of the permanent-magnet rotary electric machine of embodiment of the present invention 1.
Fig. 2 is the cutaway view of the stator core in embodiment of the present invention 1.
Fig. 3 is the cutaway view of the part of the stator core in embodiment of the present invention 1.
Fig. 4 be the stator core in embodiment of the present invention 1 a part stereogram and mean the figure of the overlapping method of iron core plate.
Fig. 5 has carried out the cutaway view of stator core that electromagnetic field is resolved the electric rotating machine of simulation.
Fig. 6 means the figure that resolves (thickness of slab of the thickness/electromagnetic steel plate of outer circumferential side iron core) that simulation calculates and the relation of torque ratio according to electromagnetic field.
Fig. 7 is the cutaway view of the part of the stator core in embodiment of the present invention 1.
Fig. 8 is the cutaway view of the part of the stator core in embodiment of the present invention 1.
Fig. 9 is the cutaway view of the part of the stator core in embodiment of the present invention 1.
Figure 10 is the figure (when permanent magnet is installed) of the manufacture method of the stator for embodiment of the present invention 1 is described.
Figure 11 is the figure (permanent magnet is installed rear) of the manufacture method of the stator for embodiment of the present invention 1 is described.
Figure 12 is the figure (during coiling) of the manufacture method of the stator for embodiment of the present invention 1 is described.
Figure 13 is the figure (after coiling) of the manufacture method of the stator for embodiment of the present invention 1 is described.
Figure 14 is the cutaway view of stator of the permanent-magnet rotary electric machine of embodiment of the present invention 2.
Figure 15 is the end view of stator of the permanent-magnet rotary electric machine of embodiment of the present invention 2.
Figure 16 is the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 3.
Figure 17 means the cutaway view of the stator after the permanent magnet in embodiment of the present invention 3 is installed.
Figure 18 is the cutaway view of the permanent-magnet rotary electric machine of embodiment of the present invention 4.
Figure 19 is the cutaway view of the stator core in embodiment of the present invention 4.
Figure 20 is the figure (when permanent magnet is installed) of the manufacture method of the stator for embodiment of the present invention 4 is described.
Figure 21 is the figure (permanent magnet is installed rear) of the manufacture method of the stator for embodiment of the present invention 4 is described.
Figure 22 is the figure (after coiling) of the manufacture method of the stator for embodiment of the present invention 4 is described.
Figure 23 means the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 5.
Figure 24 means the cutaway view of the part of the stator core in embodiment of the present invention 5.
Figure 25 means the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 6.
Figure 26 means the cutaway view of the part of the stator core in embodiment of the present invention 6.
Figure 27 mean in embodiment of the present invention 6 toward the figure wound the line on winding frame.
Figure 28 mean in embodiment of the present invention 6 toward the figure of the situation of winding is installed on stator core.
Figure 29 means the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 7.
Figure 30 means the cutaway view of the part of the stator core in embodiment of the present invention 7.
Figure 31 means the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 8.
Figure 32 means the cutaway view of stator of the permanent-magnet rotary electric machine of embodiment of the present invention 9.
Figure 33 means the cutaway view of the stator core in embodiment of the present invention 9.
Figure 34 means the cutaway view of the part of the stator core in embodiment of the present invention 9.
Figure 35 is the figure (when permanent magnet is installed) of the manufacture method of the stator for embodiment of the present invention 9 is described.
Figure 36 is the figure (permanent magnet is installed rear) of the manufacture method of the stator for embodiment of the present invention 9 is described.
Figure 37 is the general profile chart of an example of the permanent magnet type linear motor of embodiment of the present invention 10.
Figure 38 is another routine general profile chart of the permanent magnet type linear motor of embodiment of the present invention 10.
Embodiment
Below, with reference to accompanying drawing, the manufacture method of the stator of permanent-magnet rotary electric machine of the present invention, permanent-magnet rotary electric machine is described according to each execution mode.In each execution mode, identical or suitable part means by same tag, and its repeat specification is omitted.
Fig. 1 is the cutaway view (with the cutaway view of the face of the rotating shaft direct cross of electric rotating machine) of the permanent-magnet rotary electric machine of embodiment of the present invention 1.The electric rotating machine that in figure be that the rotor with salient pole number is 10, the stator number of teeth and magnet number is 12.
In figure, the 20th, stator, the 21st, stator 20 is partitioned into to the stator core of a plurality of segmentation iron core 21a, 22 are provided in a side of the tooth on each segmentation iron core 21a, the 23rd, be arranged at the permanent magnet of tooth 22, the 24th, be applied to the winding on tooth 22, the 25th, towards the concavo-convex fastening part of the direction vertical with paper (the stacked direction of aftermentioned iron core plate or the rotating shaft direction of electric rotating machine).In addition, segmentation iron core 21a is the segmentation iron core that tooth is split into two halves.Fastening part 25(is circular fastening part for example) be the circumferentially adjacent segmentation iron core 21a articulated type structure rotating around the common axle (fastening part 25) of the direction perpendicular to paper (the rotating shaft direction of permanent-magnet rotary electric machine) connected to each other.Permanent magnet 23 is configured in the substantial middle Bu Huo center of tooth with respect to tooth 22, roughly circumferentially or circumferentially be magnetized, and it is circumferentially mutually opposite direction that the direction of magnetization of circumferential adjacent permanent magnet is provided in.In addition, all applied winding 24 on whole teeth.
The 30th, rotor, the 31st, rotor core, the 32nd, rotor with salient pole.Form each segmentation iron core 21a and rotor core 31 and the rotor with salient pole 32 of stator core 21, for example as shown in Figure 4, by electromagnetic steel plate etc., the iron core plate is stacked forms.Fig. 2 is the figure that only means stator core 21.Fig. 3 is the cutaway view ((a) (b) in, the combination of left and right is contrary) of the part (link half sheet segmentation iron core 21bb described later) that only means stator core.Fig. 4 (a) is the stereogram of the part (linking half sheet segmentation iron core 21bb) that only means stator core.Fig. 4 (b) means the figure that is used to form the overlapping method that links the iron core plate that half sheet segmentation iron core 21bb uses.Stator core 21 is 12 by segmentation iron core 21a(here) form, the concaveconvex shape by fastening part 25, rotatably linking.As shown in Figure 4 (b), the contrary iron core plate linked of left and right combination, one side by fastening alternately stacked on one side, but form the articulated type structure that free-open-close moves.But, by becoming the articulated type structure of free-open-close action, can improve the activity coefficient of aftermentioned winding and interior all roundness of stator core.
In addition, on divided each tooth 22, at the outer circumferential side (opposition side of the rotor that footpath makes progress) of the configuration plane of permanent magnet 23, be provided with at circumferential outstanding protuberance (convex form) 26.This be for the location of permanent magnet 23 and high torqueization necessary, its reason is as follows.
Using the thickness t of the stator core of the outer circumferential side shown in Fig. 5 as parameter, carried out producing the simulation of torque.Fig. 6 means to produce the analog result of torque.Transverse axis in Fig. 6 is the ratio of the thickness t of outer circumferential side iron core with respect to the thickness of slab of electromagnetic steel plate (iron core plate), and the longitudinal axis means that the thickness of outer circumferential side iron core take zero torque ratio during as benchmark.As can be seen from Figure 6, the thickness t of outer circumferential side iron core is less, and torque ratio is larger.This is because if there is iron core in the peripheral part of stator core, the peripheral part at permanent magnet can produce short circuit flux, thereby can cause torque to reduce.For this reason, in the present invention, strengthen as much as possible the magnetic resistance of the permanent magnet configuration plane peripheral part of stator core, and, in order to carry out the location of permanent magnet, outer circumferential side is become to convex form (protuberance 26).In addition, known: the impact that the torque caused for the short circuit flux the permanent magnet peripheral part reduces is limited to below 6%, must make the Thickness Ratio of outer circumferential side iron core approximately below 1.5.
In addition, in the present embodiment, both sides (the permanent magnet side of rotor-side) in the inboard of tooth 22 inner circumferential sides, be provided with at circumferential outstanding protuberance (convex form) 27, both sides (the opposition side of the permanent magnet of rotor-side in the outside of tooth 22 inner circumferential sides, be the winding side), be provided with at circumferential outstanding protuberance (convex form) 28.Protuberance 27 is for the location of permanent magnet and the reduction of cogging torque.Protuberance 28, in order to reduce cogging torque, is convex form.Concrete shape about the protuberance 27,28 of tooth 22 inner circumferential sides (rotor-side), decide according to the optimization of having considered cogging torque reduction, torque raising etc.
Below, the manufacture method of the especially stator of permanent-magnet rotary electric machine is described.For example, each segmentation iron core 21a of the stator core shown in Fig. 1 21 consists of the circumferential central portion at tooth 22 or center, 2 half sheet segmentation iron cores radially being divided into two halves.2 half sheet segmentation iron cores sandwich permanent magnet 23 therebetween and fix at flank.Fig. 7,8,9 means that the half sheet segmentation iron core (iron core piece) adopted in embodiment of the present invention 1 and the side of the adjacent half sheet segmentation iron core that links adjacent segmentation iron core with fastening part 25 are each other to make it the link half sheet segmentation iron core (iron core piece) that can form around the common axle rotation of stacked direction.These half sheet segmentation iron cores are connected as shown in Figure 10～13 with link half sheet segmentation iron core.Fig. 8 means the cutaway view that links half sheet segmentation iron core 21bb, this link half sheet segmentation iron core 21bb be link half adjacent sheet segmentation iron core 21b with fastening part 25 side each other so that make it can be around the common axle rotation of stacked direction and formation.When Fig. 7, Fig. 9 mean that a plurality of link half sheet segmentation iron core 21bb are connected, one group of terminal, the half sheet segmentation iron core 21c for two lateral terminals, the cutaway view of 21d.Terminal half sheet segmentation iron core 21c, 21d have chimeric recess and protuberance mutually at side.
Prepare the two and half sheet segmentation iron core plates that form half sheet segmentation iron core 21b in advance, adjacent 2 half sheet segmentation iron cores that will link each are stacked, and, when stacked, in order to form the articulated type structure, with fastening part 25, can, around the rotation of the common axle of stacked direction, form by the stacked link the formed half sheet segmentation iron core 21bb(of a plurality of iron core plates and see Fig. 8 making it the side of adjacent half sheet segmentation iron core is connected to each other).In addition, about one group of terminal, half sheet segmentation iron core 21c, 21d, be terminal half a sheet segmentation iron core plate that forms each terminal half sheet segmentation iron core stacked and fixing (with bonding or fastening etc.) respectively, thereby form one group of terminal, half sheet segmentation iron core 21c, 21d(, see Fig. 7, Fig. 9).To terminal half sheet segmentation iron core 21c, the 21d of Fig. 7 and Fig. 9, each prepares 1.Connection half sheet segmentation iron core 21bb to Fig. 9, prepare 11.
Then, prepare 12 permanent magnets, as shown in figure 10, with adjacent link, half sheet segmentation iron core 21bb sandwiches permanent magnet 23 be fixed between the outside that becomes the central portion of tooth side, form tooth, thereby a plurality of link half sheet segmentation iron core 21bb are coupled together, then, in the i.e. outside of the central portion side of the tooth of two lateral terminals of a plurality of links half sheet segmentation iron core 21bb connected, permanent magnet 23 is sandwiched and connects terminal half sheet segmentation iron core 21c, 21d therebetween.
Between permanent magnet 23 and iron core 21bb, 21c, 21d is fixedly (lower same) that utilizes the magnetic attraction of permanent magnet 23 or utilize bonding agent to carry out.In the time of fixedly, utilize the protuberance 26,27 of the tooth central portion side (permanent magnet side) that is located at iron core 21bb, 21c, 21d to position.Cutaway view after Figure 11 means permanent magnet 23 is fixed with iron core 21bb, 21c, 21d.
Then, to utilize the articulated type structure of link half sheet segmentation iron core 21bb of Fig. 8 and iron core 21bb, the 21c, the 21d(stator core that connect) form as illustrated in fig. 12 the contraflexure state, and form the state opened between adjacent tooth, carry out the winding operation of winding 24 with coil winding machine (omitting diagram).In the present invention, owing to forming the contraflexure state, so, can realize the densification of winding.Section shape when Figure 13 means the stator after coiling is formed to rectilinear form.Make (downside in figure) the shape distortion of interior week of the stator in Figure 13 become circular or circle, and, the terminal of two lateral terminals half sheet segmentation iron core 21c, 21d are linked, fix (with bonding agent, welding etc.), like this, but the stator of the electric rotating machine shown in shop drawings 1.
Figure 14 is the cutaway view of stator of the permanent-magnet rotary electric machine of embodiment of the present invention 2.Figure 15 sees the end view of the outer circumferential side of above-mentioned stator from the direction of the rotating shaft direction quadrature with permanent-magnet rotary electric machine.Segmentation iron core 21a, the 21aa illustrated in present embodiment is equivalent to the iron core plate (see figure 4) of execution mode 1.In the present embodiment, as Figure 15 (a), 2 examples as shown in (b) are such, at stack direction, adopt the layer of 2 kinds of segmentation iron cores, that is, adopted the segmentation iron core 21aa(shown in Figure 14 (a) and Figure 32～34 relevant) layer and Figure 14 (b) layer (identical with Fig. 2) of showing segmentation iron core 21a.Segmentation iron core 21aa shown in Figure 14 (a) becomes thin wall shape to the iron core of the rotor opposition side radially of tooth central portion.Segmentation iron core 21a shown in Figure 14 (b), by the central portion at tooth, 2 half sheet segmentation iron core 21b radially being divided into two halves form.At the both ends of stack direction, the layer of the segmentation iron core 21aa that the iron core that is the rotor opposition side radially of tooth central portion is thin wall shape; At the central portion of stack direction, be by the central portion at tooth, radially be divided into the layer of the segmentation iron core 21a that 2 half sheet segmentation iron cores of two halves form., in the example of Figure 15 (b), at the both ends of stack direction, be particularly the layer of segmentation iron core 21aa; At the central portion of stack direction, the layer of alternately laminated segmentation iron core 21aa and the layer of segmentation iron core 21a.
In the present embodiment, because circumferentially adjacent segmentation iron core one-tenth connected to each other can rotate around the axial axle of the rotation of electric rotating machine, so, after coiling, make interior all shapes of segmentation iron core be deformed into circular or circle, but guarantee that the roundness of interior all shapes at this moment is very important.This is because if roundness is poor, will produce and the bad corresponding cogging torque of roundness, torque ripple, thereby cause vibration, noise.In order to ensure the roundness of interior all shapes, even the iron core of the rotor opposition side radially of tooth central portion is thin-walled, also preferably connect, but, as, implementing described in mode 1, when the iron core of the rotor opposition side radially of tooth central portion is coupled together, can cause torque to reduce.For this reason, in the present embodiment, at stack direction, adopt two kinds of segmentation iron core structures, like this, can both can guarantee interior all out of roundness of iron core, can improve torque again.
In addition, in the present embodiment, be in the end of stack direction and central portion, the segmentation iron core structure to be changed.But, as shown in Figure 15 (b), alternately stacked at stack direction, also can obtain same effect.In addition, the feature of this structure, also be applicable to the structure of other execution mode of the present invention.In addition, as permanent magnet, certainly can adopt the neodymium sintered magnet that magnetic is strong, still, even the ferrite lattices a little less than magnetic etc. also can obtain same effect.
Figure 16 and Figure 17 are the cutaway views of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 3.Figure 16 is the overall diagram of stator core, and Figure 17 is the figure while after installation magnet, stator being formed to rectilinear form.In execution mode 1, segmentation iron core 21a is fixedly utilize bonding or only utilize the jog of the fastening part 25 of linking part to realize stacked direction.But in the present embodiment,, in order to improve constant intensity, in 22 ones, tooth, be provided with fastening part 25a.The iron core plate is circular or tetragonal convex-concave shape in the fixing employing of stacked direction, thereby it is fastening to have carried out punching press when the punching press iron core.
In the present embodiment, although be fixing with the fastening direction of principal axis (stacked direction) of implementing the iron core plate of punching press,, its manufacture method is identical with execution mode 1.
Figure 18 is the cutaway view of the permanent-magnet rotary electric machine of embodiment of the present invention 4.In the permanent-magnet rotary electric machine of Figure 18, only applied winding 24 on the tooth of half, so that the tooth of winding is arranged and do not have the tooth of winding to replace.Therefore, segmentation iron core 21a, to link half sheet segmentation iron core 21bb be for example the even number more than 4, or 3 is the even number more than 6 while driving mutually.Figure 19 is the figure that only means stator core, with execution mode 1 similarly, be articulated type structure.In the present embodiment, with execution mode 1, compare, the number of windings is 1/2, and only link half sheet segmentation iron core 21bb as shown in Figure 8 forms, so, can realize cost degradation.
Below, the manufacture method of the stator of present embodiment is described.In the present embodiment, only adopt the link half sheet segmentation iron core 21bb of the articulated type structure shown in Fig. 8.Prepare 12 link half sheet segmentation iron core 21bb(shown in Fig. 8 in advance as mentioned above, each iron core plate is stacked and form respectively) and 12 permanent magnets 23.Then, as shown in figure 20, permanent magnet 23 is fixed on and links between half sheet segmentation iron core 21bb, then will couple together between a plurality of link half sheet segmentation iron core 21bb.In the time of fixedly, utilize the protuberance 26,27 be located on tooth 22 to position.Figure 21 means permanent magnet 23 and links the cutaway view after half sheet segmentation iron core 21bb fixes.
Then, utilize the articulated type that links half sheet segmentation iron core 21bb construct and iron core is formed to contraflexure state etc., with coil winding machine, apply winding 24.Therefore, can realize highdensity winding.Section shape when Figure 22 means the stator after coiling is formed to rectilinear form.Make interior all shapes of the stator of Figure 22 be deformed into circular or circle, and, with permanent magnet 23, the link of two lateral terminals half sheet segmentation iron core 21bb is fixed, like this, can manufacture the stator of the electric rotating machine shown in Figure 18.
Figure 23 and Figure 24 are the cutaway views of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 5.Figure 23 is the overall diagram of stator core, and Figure 24 means that links half a sheet segmentation iron core 21bb.Link half sheet segmentation iron core 21bb, its half sheet segmentation iron core 21b is being connected in plastic deformation section 41 with half sheet segmentation iron core 21b of adjacent segmentation iron core.This plastic deformation section 41 consists of notch part 41a and thinner wall section 41b.In the present embodiment, as shown in figure 24, between segmentation iron core, between cog, be provided with plastic deformation section 41.Manufacture method is identical with execution mode 1～4, prepares the link half sheet iron core 21bb shown in a plurality of Figure 24 in advance, and permanent magnet 23 is sandwiched and is connected to therebetween, then, coiling.Then, make respectively to link plastic deformation section 41 plastic deformations of half sheet iron core 21bb, so that connecting interior all shapes of the stator of a plurality of connection half sheet segmentation iron core 21bb, become circular.Like this, owing between half sheet segmentation iron core, plastic deformation section 41 being set, so the diel of iron core is simple, can improve productivity.
Execution mode 6
Figure 25 and Figure 26 are the cutaway views of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 6.Figure 25 is the overall diagram of stator core, and Figure 26 means that links half a sheet segmentation iron core 21bb.In the link half sheet segmentation iron core 21bb of present embodiment, be configured to the shape of the protuberance 28 of the both sides (the winding side of rotor-side) that there is no the outside that is located at tooth 22 inner circumferential sides in execution mode 1.Make such structure, although the reduction effect of cogging torque reduce slightly,, can improve productivity.Specifically, winding 24 is applied on the winding frame 29 of the nonmagnetic substance making shown in Figure 27, then, can directly be inserted into the winding frame 29 wound the line on tooth 22 as shown in figure 28.Like this, the productivity of electric rotating machine can be improved, and highdensity coiling can be realized.
Execution mode 7
Figure 29 and Figure 30 are the cutaway views of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 7.Figure 29 is the overall diagram of stator core, and Figure 30 means that links half a sheet segmentation iron core 21bb.In the link half sheet segmentation iron core 21bb of present embodiment, be configured to following shape: the protuberance 26 that there is no the outer circumferential side (rotor opposition side) of the protuberance 28 of both sides (the permanent magnet opposition side of rotor-side, be the winding side) in the outside of protuberance 27, inner circumferential side of the both sides (the permanent magnet side of rotor-side) of the inboard of tooth 22 inner circumferential sides in execution mode 1 and permanent magnet configuration plane.Make this structure, can use the winding frame wound the line 29 shown in Figure 27, and, can strengthen the magnet amount, can improve torque density.
Execution mode 8
Figure 31 is the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 8.Present embodiment is relevant to the stator core of Figure 14 (a) of execution mode 2, each segmentation iron core 21aa is configured to, permanent magnet (omitting diagram) is embedded in the gap 21e of tooth 22, and due to gap 21e, the iron core of the rotor opposition side radially of tooth 22 central portions forms the thin-walled shape 21f of section.For fear of torque density, reduce, the thickness radially of the size of the thin-walled shape 21f of section be set to be used to form segmentation iron core 21a and stacked below 1.5 times of iron core plate thickness of slab (if limited range, be for example below 1.5 times～more than 0 times).By forming this structure, tooth 22 is not divided, can assemble accurately iron core.
Execution mode 9
Figure 32 is the cutaway view of stator core of the permanent-magnet rotary electric machine of embodiment of the present invention 9.Figure 33 is the overall diagram of the stator core of the stator shown in Figure 32, and Figure 33 means the figure of the half sheet segmentation iron core of the link as unit element while manufacturing stator.In the present embodiment, as shown in Figure 32,33, adjacent segmentation iron core is that segmentation iron core 21a and the tooth that tooth 22 is divided into two halves is the non-segmentation iron core 21aa of cutting apart, and is configured to and links structure.
Divided segmentation iron core 21a such as the tooth of execution mode 1 grade is by the central portion at tooth, radially 2 half sheet segmentation iron core 21b in two form, and in tooth central portion side, 2 half sheet segmentation iron core 21b sandwich permanent magnet 23 fixing betwixt.
The non-segmentation iron core 21aa of cutting apart of execution mode 8 is configured to, and permanent magnet 23 embeds and is formed in the gap 21e on tooth 22, and the iron core of the rotor opposition side radially of tooth 22 central portions is because gap 21e forms the thin-walled shape 21f of section.Each segmentation iron core 21a, 21aa are linked by the articulated type structure that utilizes fastening part 25.
The iron core of 2 tooth amounts shown in Figure 34 links half sheet segmentation iron core 21bb, the non-segmentation iron core 21aa of cutting apart and half sheet segmentation iron core 21b, consists of.Segmentation iron core 21aa forms the 1st iron core section.Half sheet segmentation iron core 21b is attached at respectively the both sides of segmentation iron core 21aa, forms the 2nd iron core section.
Below, the manufacture method of the stator of present embodiment is described.In the present embodiment, prepare 6 link half sheet segmentation iron core 21bb and 12 permanent magnets 23 shown in Figure 34 in advance.Link half sheet segmentation iron core 21bb, forming segmentation iron core 21aa(the 1st an iron core section) and half sheet segmentation iron core 21b(the 2nd iron core section of both sides) the iron core plate to link half sheet iron core 21bb stacked by each, and, stacked on one side, on one side connected to each other to make it the common axle rotation around stacked direction half sheet iron core 21b side of segmentation iron core 21aa and both sides with fastening part 25.
Then, permanent magnet 23 is embedded and is fixed in the gap 21e of each segmentation iron core 21aa, in addition, permanent magnet 23 is sandwiched and be fixed on the flank of each adjacent link half sheet segmentation iron core 21bb between the outside, as shown in figure 35, make each permanent magnet 23 link half sheet iron core 21bb fixes with each.Should be fixedly utilize the magnetic attraction of permanent magnet 23 or carried out with bonding agent.
Then, utilize the articulated type structure that iron core is formed to contraflexure state (state opened between adjacent tooth), similarly wind the line with execution mode 4.Stator core after making to wind the line, a plurality of links that connecting half sheet segmentation iron core 21bb distortion become circular or circle, with permanent magnet 23, two lateral terminals are connected, and like this, can manufacture the stator of the electric rotating machine of present embodiment.
In the present embodiment, with execution mode 4, compare, the Segmentation Number of iron core is 1/2, and iron core piece number used, to link half sheet segmentation iron core 21bb be also 1/2, so, with execution mode 4, compare, but decrease assembling man-hour.
In addition, in the respective embodiments described above, illustrated that the rotor with salient pole number is the electric rotating machine that 10, the stator number of teeth and magnet number are 12.But, also be applicable to the situation of combination of other rotor prominent number of poles, the number of teeth and magnet number.
In addition, magnetic parts that also can be front with magnetization, the permanent magnet of replacement the respective embodiments described above.At this moment, owing to there is no magnetic attraction, so between iron core is fixedly to adopt bonding agent etc.
In addition, present embodiment is also relevant to execution mode 2.In execution mode 2, when stacked, the segmentation iron core 21a and the non-segmentation iron core 21aa(of cutting apart that tooth are split into to two halves are equivalent to respectively the iron core plate in other execution mode) by layer separate configuration.And in the present embodiment, be that tooth is divided into to the segmentation iron core 21a of two halves and the non-segmentation iron core 21aa mixed configuration of cutting apart in a layer.For this reason, by they combinations, according to desired condition, tooth is divided into to the segmentation iron core 21a of two halves and the circumferential and stacked direction that the non-segmentation iron core 21aa of cutting apart is configured in each layer, like this, can, by required balance, not only guarantee interior all roundness of iron core but also improve torque.
Figure 37, the 38th, the general profile chart of the permanent magnet type linear motor of embodiment of the present invention 10.The stator structure of the permanent-magnet rotary electric machine of the respective embodiments described above and manufacture method thereof are applicable to the mover of this permanent magnet type linear motor, still, stator core is deformed into to circle and operation that two lateral terminals are linked except.In the permanent magnet type linear motor shown in Figure 37,38, the number of teeth of mover 200 is 6, and the salient pole number of stator 300 is 5.Figure 37 is illustrated on whole teeth example while having applied winding 240, same with for example execution mode 1.Figure 38 is illustrated on the tooth of half example while having applied winding 240, same with for example execution mode 4.Just the shape (shape of mover 200 and stator 300) of tooth is the rectilinear form this point, and not identical with above-mentioned execution mode, manufacture method etc. are identical.
In the permanent magnet type linear motor, mover 200 is along moving with its stator 300 in opposite directions.The mover iron core 210 of mover 200 is configured to, having respectively a plurality of segmentation iron core 210a with stator 300 tooth in opposite directions and be the segmentation iron core adjacent at moving direction interconnects and forms, substantial middle section at the tooth of each segmentation iron core 210a is provided with permanent magnet or magnetic parts (230), each segmentation iron core 210a makes the iron core of stator 300 opposition sides on the direction in opposite directions of tooth central portion the structure of thin-walled shape, the structure of at least one party with the structure of iron-core-free among the two, there is magnetic construction (Figure 37 that magnetic resistance is increased, only meaned the structure of iron-core-free in 38).Each segmentation iron core 210a of mover 200 has the structure same with the segmentation iron core of the stator of the respective embodiments described above.
In addition, as the manufacture method of mover 200, as the manufacturing method for stators of the respective embodiments described above, roughly say, a plurality of segmentation iron core 210a have respectively and stator 300 tooth in opposite directions, at moving direction, link and formation mover 200.Form each segmentation iron core of a plurality of segmentation iron core 210a at the central portion of tooth, along half sheet segmentation iron core plate of direction half sheet segmentation iron core in two in opposite directions, the adjacent half sheet segmentation iron core linked by the segmentation iron core adjacent at moving direction is stacked, and, stacked on one side, rotate around the common axle of stacked direction (at the forward surface with stator in parallel face, direction) vertical with the moving direction of mover making it the side of half adjacent sheet segmentation iron core plate is connected to each other on one side, thereby form a plurality of link half sheet segmentation iron cores.In addition, in Figure 37,38, roughly mean the shape of each segmentation iron core 210a.
Then, permanent magnet or magnetic parts 230 are sandwiched between the outside of adjacent link half sheet segmentation iron core (linking between half sheet segmentation iron core), form the mover tooth, thereby a plurality of link half sheet segmentation iron cores are coupled together.Then, a plurality of links half sheet segmentation iron core to connecting, under the state opened between adjacent tooth, apply winding (240) to tooth.
In addition, the manufacture method of this mover 200, except the respective embodiments described above to make stator deformability be circular and two lateral terminals are linked, can, according to the operation of manufacturing stator, manufacture mover.
In addition, in the respective embodiments described above, can on whole teeth, apply winding, the tooth that has applied winding and the tooth that does not apply winding also can be arranged.
The present invention is not limited to the respective embodiments described above, and the present invention comprises the possible combination of the feature of each execution mode certainly.
Utilizability on industry
The manufacture method of permanent-magnet rotary electric machine of the present invention, permanent magnet type linear motor and stator or mover, applicable to permanent-magnet rotary electric machine, the permanent magnet type linear motor in various fields.
The explanation of Reference numeral
20 ... stator, 21 ... stator core, 21a ... tooth is split into the segmentation iron core of two halves, 21aa ... the not divided segmentation iron core of tooth, 21b ... half sheet segmentation iron core, 21bb ... link half sheet segmentation iron core, 21c, 21d ... terminal half sheet segmentation iron core, 21e ... gap, 21f ... thin-walled shape section, 21a ... segmentation iron core, 22 ... tooth, 23 ... permanent magnet, 24 ... winding, 25, 25a ... fastening part, 26, 27, 28 ... protuberance, 29 ... winding frame, 30 ... rotor, 31 ... rotor core, 32 ... rotor with salient pole, 41 ... plastic deformation section, 41b ... thinner wall section, 41a ... notch part, 200 ... mover, 210 ... the mover iron core, 210a ... segmentation iron core, 230 ... permanent magnet, 240 ... winding, 300 ... stator
Claims (15)
1. a permanent-magnet rotary electric machine, it is characterized in that, stator is configured to, there are respectively a plurality of segmentation iron cores with rotor tooth in opposite directions and be joined into and make the circumferentially adjacent segmentation iron core each other can be around the axial common axle rotation of the rotation of permanent-magnet rotary electric machine, in the substantial middle section of the tooth of above-mentioned each segmentation iron core, be provided with permanent magnet or magnetic parts; The iron core of the rotor opposition side radially of the central portion that above-mentioned each segmentation iron core is respectively tooth becomes the arbitrary structure in the structure of thin-walled shape and iron-core-free, and has the magnetic construction that increases magnetic resistance.
2. permanent-magnet rotary electric machine as claimed in claim 1, it is characterized in that, in whole segmentation iron cores, rotor opposition side radially at the central portion of tooth does not have iron core, each segmentation iron core by the central portion at tooth radially 2 half sheet segmentation iron cores in two form, 2 above-mentioned half sheet segmentation iron cores sandwich permanent magnet or magnetic parts therebetween and fix.
3. permanent-magnet rotary electric machine as claimed in claim 1 or 2, is characterized in that, in the permanent magnet of each segmentation iron core or the rotor-side of magnetic component side, is provided with at circumferential outstanding protuberance.
4. permanent-magnet rotary electric machine as claimed any one in claims 1 to 3, is characterized in that, the stator side in the tooth outside of each segmentation iron core, be provided with protuberance.
5. permanent-magnet rotary electric machine as claimed in claim 1, it is characterized in that, each segmentation iron core is formed with gap on tooth, permanent magnet or magnetic parts embed in this gap, due to above-mentioned gap, the iron core of the rotor opposition side radially of the central portion of tooth becomes thin-walled shape section, and above-mentioned each segmentation iron core is by stacked the forming of a plurality of iron core plates, and the thickness radially of the part of above-mentioned thin-walled shape section is below 1.5 times of thickness of slab of above-mentioned iron core plate.
6. permanent-magnet rotary electric machine as claimed in claim 1, is characterized in that, each segmentation iron core has stromatolithic structure; At the layer of the central portion of the tooth segmentation iron core that radially 2 half sheet segmentation iron cores of dimidiation form with will make the thin-walled shape and the layer of the segmentation iron core that forms at the iron core of the rotor opposition side radially of the central portion of tooth, stacked in stacked direction.
7. permanent-magnet rotary electric machine as claimed in claim 1, is characterized in that, each segmentation iron core consists of the 1st iron core section and the 2nd iron core section; In the 1st iron core section, permanent magnet or magnetic parts embed and are formed in the gap on tooth, and due to above-mentioned gap, the iron core of the rotor opposition side radially of the central portion of tooth becomes the thin-walled shape; The 2nd iron core section is attached at respectively the both sides of above-mentioned the 1st iron core section, is at the central portion of tooth half sheet segmentation iron core in two radially; Between above-mentioned the 2nd iron core section of adjacent above-mentioned segmentation iron core, sandwich and fixing permanent magnet or magnetic parts.
8. permanent-magnet rotary electric machine as described as any one in claim 1 to 7, is characterized in that, utilizes the magnetic attraction of permanent magnet, between iron core, is fixed.
9. the manufacture method of the stator of a permanent-magnet rotary electric machine, this stator is linked by a plurality of segmentation iron cores, it is characterized in that, and above-mentioned manufacture method has following operation:
Half sheet segmentation iron core plate of half sheet segmentation iron core will be formed, the half adjacent sheet segmentation iron core linked by the segmentation iron core circumferentially adjacent is stacked, and, stacked on one side, on one side that the side of half adjacent sheet segmentation iron core plate is connected to each other rotating around the common axle of stacked direction, thereby form a plurality of link half sheet segmentation iron cores, above-mentioned half sheet segmentation iron core is that the central portion at the tooth of above-mentioned segmentation iron core radially forms in two, and above-mentioned segmentation iron core has respectively with tooth in opposite directions of rotor and forms stator circumferentially linking;
Permanent magnet or magnetic parts are sandwiched between the outside of each adjacent above-mentioned link half sheet segmentation iron core, form stator tooth, a plurality of link half sheet segmentation iron cores are connected;
To a plurality of links half sheet segmentation iron core connected, the state opened with adjacent between cog winds the line on tooth; And
Make a plurality of links half sheet segmentation iron core distortion connected become circular, and two lateral terminals are linked.
10. the manufacture method of the stator of permanent-magnet rotary electric machine as claimed in claim 9, is characterized in that,
In the operation of a plurality of link half sheet segmentation iron cores of above-mentioned formation, the even number formed more than 4 links half sheet segmentation iron core;
In the above-mentioned operation wound the line, from the tooth of an inboard of two lateral terminals of a plurality of links half sheet segmentation iron core of having connected, every one, wound the line;
In above-mentioned distortion and by the operation of two lateral terminals links, permanent magnet or magnetic parts are sandwiched between the link half sheet segmentation iron core of two lateral terminals, afterwards two lateral terminals are linked.
11. the manufacture method of the stator of permanent-magnet rotary electric machine as claimed in claim 9, it is characterized in that, also have following operation: the terminal half sheet segmentation iron core plate that will form one group of terminal half sheet segmentation iron core is stacked fixing and form above-mentioned one group of terminal, half sheet segmentation iron core respectively, and this one group of terminal, half sheet segmentation iron core is for two lateral terminals of a plurality of links half sheet segmentation iron core of having connected;
To link above-mentioned the operation that half sheet segmentation iron core links, permanent magnet or magnetic parts will be clamped between two lateral terminals of a plurality of links half sheet segmentation iron core connected, will above-mentioned one group of terminal, half sheet segmentation iron core connection;
In the above-mentioned operation wound the line, whole teeth is wound the line;
In above-mentioned distortion and by the operation of two lateral terminals links, above-mentioned one group of terminal half sheet segmentation iron core of two lateral terminals is linked.
12. the manufacture method of the stator of permanent-magnet rotary electric machine as claimed in claim 9, is characterized in that, each segmentation iron core consists of the 1st iron core section and the 2nd iron core section; In the 1st iron core section, be formed for embedding the gap of permanent magnet or magnetic parts on tooth, due to above-mentioned gap, the iron core of the rotor opposition side radially of the central portion of tooth becomes the thin-walled shape; The 2nd iron core section is attached at respectively the both sides of above-mentioned the 1st iron core section, is at the central portion of tooth half sheet segmentation iron core in two radially;
In the operation of a plurality of link half sheet segmentation iron cores of above-mentioned formation, will be stacked by linking half sheet segmentation iron core for the iron core plate of the 2nd iron core section that forms above-mentioned the 1st iron core section and both sides, and, stacked on one side, on one side will for the side of the iron core plate of the 2nd iron core section of above-mentioned the 1st iron core section and both sides is connected to each other can be around the common axle rotation of stacked direction;
To link above-mentioned the operation that half sheet segmentation iron core connects, permanent magnet or magnetic parts are embedded and are fixed in the gap of above-mentioned each the 1st iron core section, and, permanent magnet or magnetic parts are sandwiched and are fixed between the outside of each adjacent above-mentioned link half sheet segmentation iron core.
13. the manufacture method as the stator of the described permanent-magnet rotary electric machine of any one in claim 9 to 12, is characterized in that, utilizes the magnetic attraction of permanent magnet, by fixing between iron core.
A 14. permanent magnet type linear motor, mover moves along stator in opposite directions, it is characterized in that, above-mentioned mover is configured to, have respectively with a plurality of segmentation iron cores of said stator tooth in opposite directions be connected so that the segmentation iron core adjacent at moving direction each other can be in the face parallel with said stator forward surface in opposite directions, perpendicular to the axle rotation of above-mentioned moving direction, be provided with permanent magnet or magnetic parts in the substantial middle section of the tooth of above-mentioned each segmentation iron core; The iron core of the stator opposition side on the direction in opposite directions of the central portion that above-mentioned each segmentation iron core is tooth becomes at least one party of the structure of the structure of thin-walled shape and iron-core-free, and has the magnetic construction that increases magnetic resistance.
15. the manufacture method of the mover of a permanent magnet type linear motor, in this permanent magnet type linear motor, mover moves along stator in opposite directions, it is characterized in that, above-mentioned manufacture method has following operation:
Half sheet segmentation iron core plate of half sheet segmentation iron core will be formed, the half adjacent sheet segmentation iron core linked by the segmentation iron core adjacent at moving direction is stacked, and, stacked on one side, on one side that the side of half adjacent sheet segmentation iron core plate is connected to each other rotating around the common axle of stacked direction, thereby form a plurality of link half sheet segmentation iron cores, above-mentioned half sheet segmentation iron core is to form in two along direction in opposite directions at the central portion of the tooth of each segmentation iron core of a plurality of segmentation iron cores, above-mentioned a plurality of segmentation iron core has respectively with tooth in opposite directions of stator and at moving direction and links and form mover,
Permanent magnet or magnetic parts are sandwiched between the outside of each adjacent above-mentioned link half sheet segmentation iron core, form stator tooth, a plurality of link half sheet segmentation iron cores are connected; And
To a plurality of links half sheet segmentation iron core connected, the state opened with adjacent between cog winds the line on tooth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011114603 | 2011-05-23 | ||
| JP2011-114603 | 2011-05-23 | ||
| PCT/JP2012/051342 WO2012160841A1 (en) | 2011-05-23 | 2012-01-23 | Permanent magnet-type rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
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| CN103493338A true CN103493338A (en) | 2014-01-01 |
| CN103493338B CN103493338B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280019610.5A Active CN103493338B (en) | 2011-05-23 | 2012-01-23 | Permanent-magnet rotary electric machine |
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| Country | Link |
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| JP (2) | JP5791713B2 (en) |
| CN (1) | CN103493338B (en) |
| WO (1) | WO2012160841A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5791713B2 (en) | 2015-10-07 |
| CN103493338B (en) | 2016-05-18 |
| WO2012160841A1 (en) | 2012-11-29 |
| JP5975154B2 (en) | 2016-08-23 |
| JPWO2012160841A1 (en) | 2014-07-31 |
| JP2016007132A (en) | 2016-01-14 |
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