CN109997291A - It takes turns the pole of the inductor of rotating electric machine - Google Patents
It takes turns the pole of the inductor of rotating electric machine Download PDFInfo
- Publication number
- CN109997291A CN109997291A CN201780070547.0A CN201780070547A CN109997291A CN 109997291 A CN109997291 A CN 109997291A CN 201780070547 A CN201780070547 A CN 201780070547A CN 109997291 A CN109997291 A CN 109997291A
- Authority
- CN
- China
- Prior art keywords
- pole
- wheel
- taken turns
- pawl
- inductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- 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
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
- H02K21/044—Rotor of the claw pole type
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention mainly relates to a kind of poles of inductor for rotating electric machine to take turns (18), which is characterized in that it is made of metal_based material, which has the micro-structure that there is no fibrosis.
Description
Technical field
The present invention relates to a kind of inductor, the rotors of the rotating electric machine for example including at least one pole wheel.Mesh of the invention
Be improve rotating electric machine electric and magnetic energy.
Background technique
The present invention is for the alternating current generator or alternator-starter of motor vehicles or reversible machine and more typically
Ground has particularly advantageous but nonexcludability application for its rotor in automotive field includes all motors of pawl.
Claw machine is machine for converting mechanical energy into electric energy in the case of an alternator.The electric notor the case where
Under, convert electric energy to mechanical energy.
It is made of rotor and stator.Rotor includes two poles wheel that head to tail is installed, referred to as north wheel and south wheel.They
Dress closes on the axis of spring bearing, and bearing allows rotor to rotate in the wound stator for including multiple conductor coils.In rotor
Portion, between wheel, the coil of electric conductor is closed or is positioned by dress and is used to generate magnetic field by the circulation of electric current.Pole wheel is for by magnetic
Flux conduction is to stator board group.
Rotor is rotary part, and velocity interval is, for example, 0 to 20000 rev/min.Under its maximum speed, pole wheel
Pawl opens 1/tens millimeters.This is why there is gap between rotor and stator, that takes into account pawls with very
A possibility that being opened when high speed.Finally, there is the electric current for being intended to fight above-mentioned field by period in the wheel of pole in magnetic field
Formation.Another important parameter is resistivity, it must limit vortex as much as possible.
Essentially due to cost reason, pole wheel can be made up of forging or folding technology.In forging technology, material blank
Material reaches about 1000 DEG C to 1250 DEG C, is deformed followed by forging device to obtain claw type state.It is often necessary to hot pressing several times
Operation, usually three times, to obtain the shape of pawl.Forging technology ability, about one millimeter, relative to the public affairs for being assigned to product
Poor section is excessively high, it is necessary to cold punching press operation is added after hot stamping operation, those skilled in the art are referred to as calibration operation (op
érations de calibrage).Although having carried out these repair operations, Production Example difference is maintained as about 0.5mm.
In the case where folding technology, it is first cut into star, branch will be folded to form pawl.This technique price
It is cheap, complicated shape is not allowed for or obtains good technological ability, and tolerance interval is still very high.
In order to improve the performance of motor, it is necessary to minimize the gap between rotor and stator.The gap is defined as
The distance between the inside radius of son and the outer radius of rotor.This is why the overall diameter of rotor is processed to optimal
Ability obtains the reason of good control to its size.
The pole wheel of forging has internal anisotropy.This anisotropy is generated by the manufacturing operation of forged part
's.In the scale of metallographic structure, the plastic deformation generated during manufacturing process can lead to the topology orientation of microstructure,
That is the alignment or elongation of field trash and crystal grain.This anisotropic structure of material, commonly referred to as fibrosis (fibrage), resistance
Pole has been hindered to take turns the circulation in interior magnetic field.
In addition, crystalline orientation (referred to as texture) is also to be generated by the hot forming of polycrystalline material regardless of technique.If
It is controlled, this macroscopic orientation of crystal also will affect the electromagnetic performance of pole wheel.
Summary of the invention
It is special the present invention is directed to improve the performance of pole wheel by proposing a kind of pole wheel of inductor for rotating electric machine
Sign is that the pole wheel includes plate, pawl and half core, and it is made of metal_based material, which, which has, at least exists
It there is no the micro-structure of fibrosis in pawl.
Therefore, the present invention allows to improve the induction curve of pole wheel, especially its magnetic conductivity.Therefore the magnetism of motor is improved
Energy and electric property.The cost of manufacture rotor also advantageously reduces.
According to one embodiment, the pole wheel has substantially isotropic micro-structure at least in pawl.
According to one embodiment, the pole wheel has the micro-structure that there is no fibrosis in the wheel of entire pole.
According to one embodiment, the pole wheel has substantially isotropic micro-structure in the wheel of entire pole.
According to one embodiment, the pole wheel can be made up of thixotropic forming (thixoforgeage) technique.
According to one embodiment, then the average grain size of material is gradually changed from half core to plate to pawl.
According to one embodiment, the drafting angle between corner in the region (entre-cornes) is less than 1.5 degree.
According to one embodiment, the carbon content of material is less than or equal to 0.08%.
According to one embodiment, which includes nickel or cobalt content or any element for being intended to improve magnetic conductivity.
According to one embodiment, the pole wheel includes the geometry that can receive permanent magnet, especially lip.
According to one embodiment, the thickness of lip is less than or equal to 1.5mm.
According to one embodiment, the connection radius between lip and the corresponding lateral face of pawl is less than 0.5mm.
The invention further relates to a kind of inductors taken turns including at least one pole as described above.
The invention further relates to a kind of rotating electric machines, including foregoing inductor.
The invention further relates to a kind of methods of the pole wheel of inductor for manufacturing rotating electric machine, which is characterized in that the method
Include:
The step of blank heating made of metal_based material to wherein blank is in the temperature of semisolid,
The step of making blank shape the component in the form of acquisition is in pole wheel by means of mold, and
The step of popping up the component.
According to a kind of embodiment, the ratio of liquid metal at the end of heating stepses in blank is less than 30%, especially
It is in the range of 1.5% to 30%.
According to a kind of embodiment, heating stepses execute the temperature until about or greater than 1470 DEG C.
According to a kind of embodiment, the method may include the additional steps of surface treatment, at shot-peening
Reason or polishing.
Detailed description of the invention
By reading following description and refering to the attached drawing of accompanying, it is better understood with the present invention.Provide these figures and be for
Illustrate and not limit the present invention.
Fig. 1 a to 1d is the view for each step that explanation manufactures pole wheel according to the present invention by thixotroping shaping；
Fig. 2 is the graphic representation that the liquid portion in the base steel material of XC05 type varies with temperature；
Fig. 3 a and 3b are the perspective views of the different angle of pole wheel according to the present invention；
Fig. 4 a and 4b be respectively pole according to the present invention wheel and according to prior art pole wheel fibrosis development along
The view of section plane；
Fig. 5 is to be respectively equipped with pole wheel, the pole according to the present invention wheel obtained by thixotropic forming according to prior art
With the graphical representation of the current flow of the rotating electric machine for the pole wheel obtained by thixotropic forming for having been subjected to annealing operation.
Specific embodiment
Identical, similar or similar element keeps identical reference marker from a figure to another figure.
According to the present invention, the pole wheel of the inductor of rotating electric machine is manufactured by thixotropic forming technique, and step is shown in Fig. 1 a
Into 1d.
First step shown according to fig. 1a, heating unit 10 ensure to heat the material blank 11 being formed from steel, the steel
Preferably have high magnetic.For this purpose, steel has a low carbon content, particularly smaller or equal than 0.08%, and advantageously exist
In the range of 0.04% to 0.08%.Such steel alloy may include being intended to improve the element of magnetic conductivity, such as cobalt or nickel,
Or it is intended to improve any other element of its magnetic characteristic.
Heating unit 10 may, for example, be induction heating unit comprising around the circle 12 of non magnetic supporting element 13 positioning.
These circles 12 are passed through by alternating current to generate vortex, so as to cause the heating of blank 11.Heating can carry out in an inert atmosphere,
To prevent the material oxidation of blank 11.
Metal is made to be in semisolid in the temperature of the material of the blank 11 in the exit of heating unit 10, that is to say, that it
Including liquid portion.Preferably, the ratio of liquid metal is less than 30%, especially in the range of 1.5% to 30%, and its
Volume is unevenly distributed.
As shown in Fig. 2, for XC05 fashioned iron, include 1.5% to 30% range P1 in liquid portion correspond to
1470 DEG C to 1519 DEG C of temperature range P2.
More generally, heating temperature can be about 1470 DEG C or greater than 1470 DEG C.Feasible temperature range depends on institute
The material and alloy used.
In the temperature levels, liquid phase is enough, while will not be too high, to allow blank 11 being transported to processing from heating region
Region.Blank is transported by the realization of grabber piece 14 for being suitable for manually or automatically operating, as shown in Figure 1 b.
Blank 11 is placed between two molds 16,17, is then shaped by Guan Bi mould 16,17, as illustrated in figure 1 c.
Quickly operation is in response to velocity conditions relevant to the temperature of blank 11 and tool.
After such shaping, the component 18 of form is taken turns in pop-up in pole, as shown in Figure 1 d.Then, pole wheel 18 can be passed through optionally
Surface treatment operations are gone through to improve its mechanical strength, such as shot-peening or sanding operation.
The technique can be completed advantageous by annealing operation, with the magnetic and mechanical performance of significant improvement pole wheel 18.
In a variant, heating stepses directly carry out in the tool, turn blank from heating unit so as to eliminate
The step of moving on to mold.
As can see in Fig. 3 a and 3b, the pole wheel 18 with axis X obtained at the end of previous process includes
Plate 20, plate 20 are provided with pawl 21 in its periphery, and pawl 21 is for example with trapezoidal shape and axial orientation.Pawl 21 corresponds to relative to plate
The part of 20 pole wheels 18 outstanding.It takes turns 18 two adjacent pawls 21 with pole to be spaced apart each other with space 22, space 22 is for receiving
The pawl of another pole wheel.Therefore, the pawl 21 of two poles wheel 18 of the rotor of machine is nested relative to each other.
Pole wheel 18 further includes geometry, especially lip 23, can receive to be positioned at and belongs in wheel facing with each other
Permanent magnet between the adjacent pawl 21 of each two.The thickness L1 of lip 23 is less than or equal to 1.5mm.
Connection radius R between lip 23 and the corresponding lateral face of pawl 21 is less than 0.5mm.
Pole wheel 18 further includes the cylindrical section 24 axially extending along direction identical with pawl 21 in part in its center.The column
Shape part corresponds to the half core 24 in the extension for the correspondence half core 24 for being intended to be located at opposite pole wheel 18, to be formed in outside it
The core of week carrying rotor excitation coil.
In alternative embodiments, pole wheel 18 may include entire core, and another relevant pole wheel 18 does not then include core.Separately
Outside, in another variant embodiment, core can take turns 18 with pole and be formed separately.
Pole wheel 18 further includes the central opening 27 being arranged across half core 24, for being mounted on the axis of motor by press-fit
On.
Advantageously, as can see in fig 3b, the drafting angle A measured in region between corner is less than 1.5 degree.It should
Drafting angle A corresponds to the angle between the normal N and straight line D of the rear of pole wheel 18, and straight line D is passed through the two of pole wheel 18
The outer surface in the region extended between a continuous corner 25.It is contemplated that corner 25 includes between pawl 21 and pawl 21 and plate 20
Coupling part 26.
As can see in fig.4, the surface of pole wheel 18 does not show micro-structure inhomogeneities, such as fibrosis.
This aspect is observed that after surface chemistry erosion, to disclose fibrosis.By will along wheel 18 plane P cutting plane
It immerses in acidic products and executes the operation.In other words, different from the structure of the wheel of tradition pole shown in Fig. 4 b 18, pole wheel 18
With at least partly not no structure of fibrosis.Pole wheel 18 has the micro-structure of not fibrosis at least in pawl 21, and
There is the micro-structure of not fibrosis advantageously in its all part (plate 20, pawl 21 and half core 24).In this case, micro-
Structure is almost isotropic at least in pawl 21.
The pole wheel 18 of acquisition has the crystal grain 30 gradually changed from half core 24 along the logical path in material until pawl 21
Average-size.According to ASTM grade, this variation is from about size 3 to size 6.
This structure allows to obtain the conductivity greater than 5.8MS/m of pole wheel 18.In addition, maximum relative permeability is big
In 1200.This allows to improve the magnetic property and electric property of rotating electric machine.
In fact, as shown in figure 5, for be respectively equipped with the pole made of thixotropic forming wheel rotating electric machine (referring to song
Line C2), the flow of motor is greater than obtained for the motor (see curve C1) taken turns equipped with the pole made of conventional method
Flow.
For the rotating electric machine equipped with the pole wheel for made of thixotropic forming and in addition having been subjected to annealing operation
Flow highest obtained (referring to curve C3).
Certainly, the description of front is merely given as examples, and is not limit the scope of the invention, and the scope of the present invention cannot lead to
It crosses and replaces different elements with any other equivalent to surmount.
In addition, different characteristic of the invention, modification and/or embodiment can close each other according to various combinations
Connection, as long as they are not incompatible or mutually repel each other.
Claims (15)
1. (18) are taken turns in a kind of pole of inductor for rotating electric machine, which is characterized in that the pole wheel includes plate (20), pawl (21)
With half core (24), and the pole wheel be made of metal_based material, the material have at least in the pawl (21) substantially
There is no the micro-structure of fibrosis.
2. (18) are taken turns in pole according to claim 1, which is characterized in that the pole wheel has substantially at least in pawl (21)
Isotropic micro-structure.
3. (18) are taken turns in pole according to claim 1 or 2, which is characterized in that the pole wheel can pass through thixotropic forming technique
It is made.
4. pole wheel according to any one of claim 1 to 3, which is characterized in that crystal grain (30) of the material are averaged
Size is then gradually changed to the pawl (21) from the half core (24) to the plate (20).
5. (18) are taken turns in pole according to any one of claim 1 to 4, which is characterized in that the draft angle between corner in region
(A) is spent less than 1.5 degree.
6. (18) are taken turns in pole according to any one of claim 1 to 5, which is characterized in that the carbon content of the material is less than
Or it is equal to 0.08%.
7. (18) are taken turns in pole according to any one of claim 1 to 6, which is characterized in that the material includes certain content
Nickel or cobalt or any element for improving magnetic conductivity.
8. (18) are taken turns in pole according to any one of claim 1 to 7, which is characterized in that the pole wheel includes that can receive
The geometry of permanent magnet, especially lip (23).
9. (18) are taken turns in pole according to claim 8, which is characterized in that the thickness of lip (23) is less than or equal to 1.5mm.
10. (18) are taken turns in pole according to claim 8 or claim 9, which is characterized in that lip (23) and the corresponding lateral face of pawl (21) it
Between connection radius (R) be less than 0.5mm.
11. a kind of inductor, including at least one pole according to defined by any one of preceding claims wheel (18).
12. a kind of rotating electric machine, including inductor defined by 1 according to claim 1.
13. a kind of method of the pole wheel (18) of inductor of manufacture for rotating electric machine, which is characterized in that the described method includes:
The blank made of metal_based material (11) is heated to the heating that the wherein blank (11) is in the temperature of semisolid
Step,
Make the step of blank (11) forming is to obtain component (18) in the form of the wheel of pole by means of mold (16,17), and
The step of popping up the component (18).
14. according to the method for claim 13, which is characterized in that liquid at the end of heating stepses in the blank (11)
The ratio of state metal is less than 30%, especially in the range of 1.5% to 30%.
15. method described in 3 or 14 according to claim 1, which is characterized in that heating stepses execute until about or greater than 1470
DEG C temperature.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1670707A FR3059170B1 (en) | 2016-11-24 | 2016-11-24 | POLAR INDICATOR WHEEL OF ROTATING ELECTRICAL MACHINE |
| FR1670707 | 2016-11-24 | ||
| PCT/EP2017/080250 WO2018096051A1 (en) | 2016-11-24 | 2017-11-23 | Polar wheel of an inductor of a rotating electrical machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109997291A true CN109997291A (en) | 2019-07-09 |
Family
ID=58054363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780070547.0A Pending CN109997291A (en) | 2016-11-24 | 2017-11-23 | It takes turns the pole of the inductor of rotating electric machine |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN109997291A (en) |
| DE (1) | DE112017005941T8 (en) |
| FR (1) | FR3059170B1 (en) |
| WO (1) | WO2018096051A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3074706B1 (en) * | 2017-12-13 | 2020-11-27 | Valeo Equip Electr Moteur | FITTING DEVICE EQUIPPED WITH AN IMPROVED CLAMPING SYSTEM |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722032A (en) * | 1996-07-01 | 1998-02-24 | General Motors Corporation | AC generator rotor segment |
| US6151198A (en) * | 1998-11-18 | 2000-11-21 | International Business Machines Corporation | Overmolding of actuator E-block by thixotropic or semisolid forging |
| CN1435003A (en) * | 1999-12-23 | 2003-08-06 | 霍尼韦尔国际公司 | Bulk amorphous metal magnetic components for electric motors |
| CN101056728A (en) * | 2004-11-10 | 2007-10-17 | 赫斯基注射器成型系统有限公司 | Near liquidus injection molding process |
| CN102363850A (en) * | 2011-11-03 | 2012-02-29 | 无锡欧亚精密冲压件有限公司 | Process for producing aluminum alloy for motor rotor |
| CN102728760A (en) * | 2012-07-03 | 2012-10-17 | 北京有色金属研究总院 | Aluminum alloy rotor forming die and method thereof |
| CN103029368A (en) * | 2011-09-29 | 2013-04-10 | 比亚迪股份有限公司 | Composite metal shell and preparation method |
| CN103095015A (en) * | 2011-10-31 | 2013-05-08 | 阿斯莫有限公司 | Rotor and motor |
| CN105964971A (en) * | 2016-05-27 | 2016-09-28 | 宋照峰 | Vacuum semi-solid copper rotor die-casting method |
| CN106104971A (en) * | 2014-03-25 | 2016-11-09 | 法雷奥电机设备公司 | The forging pole wheel being provided with interpolar permanent magnet for automotive alternator |
-
2016
- 2016-11-24 FR FR1670707A patent/FR3059170B1/en active Active
-
2017
- 2017-11-23 WO PCT/EP2017/080250 patent/WO2018096051A1/en active Application Filing
- 2017-11-23 CN CN201780070547.0A patent/CN109997291A/en active Pending
- 2017-11-23 DE DE112017005941.0T patent/DE112017005941T8/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722032A (en) * | 1996-07-01 | 1998-02-24 | General Motors Corporation | AC generator rotor segment |
| US6151198A (en) * | 1998-11-18 | 2000-11-21 | International Business Machines Corporation | Overmolding of actuator E-block by thixotropic or semisolid forging |
| CN1435003A (en) * | 1999-12-23 | 2003-08-06 | 霍尼韦尔国际公司 | Bulk amorphous metal magnetic components for electric motors |
| CN101056728A (en) * | 2004-11-10 | 2007-10-17 | 赫斯基注射器成型系统有限公司 | Near liquidus injection molding process |
| CN103029368A (en) * | 2011-09-29 | 2013-04-10 | 比亚迪股份有限公司 | Composite metal shell and preparation method |
| CN103095015A (en) * | 2011-10-31 | 2013-05-08 | 阿斯莫有限公司 | Rotor and motor |
| CN102363850A (en) * | 2011-11-03 | 2012-02-29 | 无锡欧亚精密冲压件有限公司 | Process for producing aluminum alloy for motor rotor |
| CN102728760A (en) * | 2012-07-03 | 2012-10-17 | 北京有色金属研究总院 | Aluminum alloy rotor forming die and method thereof |
| CN106104971A (en) * | 2014-03-25 | 2016-11-09 | 法雷奥电机设备公司 | The forging pole wheel being provided with interpolar permanent magnet for automotive alternator |
| CN105964971A (en) * | 2016-05-27 | 2016-09-28 | 宋照峰 | Vacuum semi-solid copper rotor die-casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112017005941T8 (en) | 2019-10-24 |
| FR3059170B1 (en) | 2018-11-02 |
| WO2018096051A1 (en) | 2018-05-31 |
| DE112017005941T5 (en) | 2019-09-05 |
| FR3059170A1 (en) | 2018-05-25 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190709 |
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