EP4070437A1 - Stator einer rotierenden elektrischen maschine, rotierende elektrische maschine und antriebseinheit mit einer solchen maschine - Google Patents
Stator einer rotierenden elektrischen maschine, rotierende elektrische maschine und antriebseinheit mit einer solchen maschineInfo
- Publication number
- EP4070437A1 EP4070437A1 EP20841882.2A EP20841882A EP4070437A1 EP 4070437 A1 EP4070437 A1 EP 4070437A1 EP 20841882 A EP20841882 A EP 20841882A EP 4070437 A1 EP4070437 A1 EP 4070437A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- rotor
- electrical machine
- rotating electrical
- drive unit
- 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.)
- Withdrawn
Links
- 238000004804 winding Methods 0.000 claims abstract description 23
- 230000004907 flux Effects 0.000 claims description 10
- 230000005415 magnetization Effects 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 230000033001 locomotion Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- 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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/12—Machines characterised by the bobbins for supporting the windings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Definitions
- the invention relates generally to a rotating electrical machine in which electrical power is converted into mechanical power (electric motor) or from mechanical power into electrical power (electric generator) and which have a rotor and stator as essential components.
- the invention also relates to a stator of such a rotating electrical machine.
- the invention particularly relates to an electric motor or a generator of such a drive unit which is used for locomotion of motorized vehicles of various types.
- a drive unit with an electric motor which is designed as a radial flux machine, and the rotor of which has a permanent magnet arrangement.
- the invention also relates to an electrical generator, the stator of which the induction coils for generating a
- the excitation can take place by means of permanent magnets or electromagnets arranged in the rotor, the first with the advancing development of high-performance magnets already for generators in the Megawatt range is usable and continues to gain in importance.
- the invention also relates to a drive unit which is equipped with a rotating electrical machine according to the invention.
- a drive unit for locomotion of a motorized vehicle is to be understood here as meaning those devices which serve to transmit power and for this purpose execute or support a rotation on the output side.
- the power transmission is realized directly, for example by means of a single wheel drive or the like, or indirectly, for example by means of suitable transmission means such as traction mechanism, cardan shaft or the like.
- Such drive units are known as electrical drives or auxiliary drives for transporting people or objects, for example for various land vehicles, including means of locomotion powered by muscle power. They are currently used for various electric vehicles, such as bicycles, scooters, Segway or the like.
- a controlled combination of several drive units for larger vehicles is also known. With advancing development and diversification of locomotion, further fields of application can arise.
- Such electric motors can be designed with an internal rotor or external rotor configuration. They have a stator which is connected to a frame or housing or the like that is stationary relative to the rotor.
- the stator is made up of an essentially round stator body, viewed from the inside or outside contour Metal sheets formed.
- the stator has circumferentially arranged stator teeth with intermediate stator slots which form poles for receiving coil windings, usually made of copper.
- the stator teeth are connected to one another by a stator back yoke.
- the term "essentially” includes contours that are formed, for example, by a polygon due to the shape of the stator teeth, the corners of the stator teeth being the plurality of corner points of the polygon and the round contour being perceived by the circle of the polygon.
- the polygon such a stator is regularly a regular polygon with the same side lengths and the same interior angles.
- the rotor of the electric motor is arranged coaxially to the stator in such a way that the rotor circumferentially surrounds the stator and can rotate around the stator.
- the (possibly fictitious) inner circumferential surface of the rotor opposite the stator teeth has a permanent magnet arrangement such that an annular air gap, referred to as the working gap, is formed between the inner circumferential surface of the permanent magnet arrangement and the (possibly fictitious) outer circumferential surface of the stator.
- the stator is often fixedly mounted on an axle or a hub, while the rotor assembly is rotatably mounted.
- the position of the working gap and, directly connected to it, its effective radius, for example the center radius, is a parameter which has a significant influence on the torque of the machine.
- Another parameter is the magnetic one Flux of the permanent magnet arrangement and the stator winding. The latter is characterized in particular by the degree of filling of the stator slots with the winding, with the manufacture of the winding and its density presenting particular challenges.
- the basic structure of an electric generator is based on the same basic physical principle, electromagnetic induction, comparable to that of an electric motor, which is why both machines are collectively referred to as rotating electric machines and most of the parameters that affect performance apply to both machine types.
- the invention is based on the object of specifying a rotating electrical machine with which the degree of filling and the mechanical or electrical power that can be generated can be increased compared to comparable machines, while the required installation space and the cost of materials can be reduced or at least retained.
- stator according to claim 1 which can be used in a rotating electrical machine, ie in an electric motor or a generator.
- the task is also carried out by a rotating Electric machine according to claim 9 and a drive unit using such a machine according to claim 13 solved.
- the dependent claims relating to these claims describe advantageous embodiments of the subjects of the independent claims.
- stator teeth and stator slots have geometries such that the stator teeth have a trapezoidal shape with an outwardly increasing tooth width or that the stator slots have parallel flanks.
- shape of the stator teeth can be selected so that the stator slots are parallel slots so that they can be filled to the maximum by the windings of the two adjacent coils in each case. There is a separate one on each of the stator teeth
- Coil winding of an induction coil arranged.
- the separate coil windings allow the degree of filling of the stator slots to be optimized and reduce the cost of production compared to the known stator windings.
- a certain fixing of the coil winding is also possible by means of an outwardly increasing width of the stator teeth at least in sections.
- a fixability of the stator winding with an optimal degree of filling can be achieved, for example, if the stator tooth has the largest tooth width at its outer end, also referred to below as the fixing dimension.
- the tooth width can steadily increase from its inner end towards the outer end.
- the increase can only take place at a distance from its inner end and / or run discontinuously, with sections being able to have a trapezoidal shape.
- the coil windings are formed by means of separate coils which have a coil body and a separate coil winding.
- the bobbins can be in the shape of a prism or
- each coil body has a coil body lying between the base and top surface and a passage running through at least the coil body and the base surface.
- a coil winding is arranged on the outer surface of the coil body.
- the passage in the coil body can, for example, have a square cross section. Other designs of the cross section are also possible, such as circular or n-angular with n as an element of the natural numbers and equal to or greater than 3.
- the base and top surfaces of the coil body can be formed by an inner and outer coil flange.
- a coil flange is to be understood here as a plate-shaped body which adjoins the coil body and protrudes circumferentially beyond its jacket surfaces.
- a coil flange can thus represent a limitation for the coil winding.
- At least the inner coil flange has a passage which with the
- both spool flanges can have such a passage.
- a rectangular shape of at least the outer coil flanges of the stator it is possible to produce an almost closed outer circumferential surface of the stator.
- the terms outside and inside relate to the axis of the stator, so that external components have a larger radial distance and internal components have a smaller radial distance from the axis.
- the bobbins can be made of plastic, it proving to be advantageous in comparison to the mushroom-shaped stator teeth of the laminated core known from the prior art that the bobbins according to the invention have no or at least have no significant influence on the cogging torque.
- the design of the bobbin made of plastic supports the attachment. This is particularly the case when the coil body is designed to be completely or partially elastically deformable, so that at least its cross-sectional area can be deformed. In this way, the coil body can be pressed in one direction and thus the extension of the passage in the other direction, which is at right angles to it, can be increased. So it can easily be guided onto the trapezoidal stator tooth and fixed on it by relieving it.
- stator slots are designed to be open to the outside and thus to the external rotor and the air gap between them. This means that the slots are not closed by the laminated core or other components of the stator, with the exception of the coils, as described below, which are closed, for example in order to fix the windings. In this way, the installation space of the rotor can be further reduced and the efficiency of an electrical machine in which the stator is used can be improved.
- the individual coils can be prefabricated separately and fixed simply by being attached to the stator teeth.
- the latter is also supported or simplified by the open stator slots and the trapezoidal shape of the stator teeth described.
- Supplementary holding means for permanently holding the coils in their position can be arranged, for example as a function of the speed to be achieved be.
- the construction space and / or the weight of the stator can be reduced by means of the embodiments according to the invention. In addition or as an alternative, it is thus possible to increase the torques that can be achieved by the electric motor.
- the object of the invention is also achieved by a rotating electrical machine according to claim 9. As described above in the prior art, this includes both an electric motor and an electric generator.
- Such a rotating electrical machine comprises a rotatably mounted rotor which has a hollow cylindrical permanent magnet arrangement formed from a plurality of segments.
- the permanent magnet arrangement usually has a shape such that its inner and outer diameters are significantly larger than the height of the hollow cylinder of the magnet arrangement.
- the segments of the permanent magnet arrangement are arranged in such a way that their magnetization directions change from segment to segment in defined steps.
- the change takes place in such a way that the magnetic flux is increased over the inner lateral surface of the hollow cylinder facing the stator and thus in the air gap and is reduced over the opposite outer lateral surface.
- Such an influencing of the magnetic flux is achieved by rotating each of the segments about an axis of the respective segment lying parallel to the lateral surface in the same direction of rotation by a defined angle, for example 90 °. With a rotation of the segments by 90 ° the magnetic pole changes from one segment to the next on the outer circumferential surface of the permanent magnet arrangement facing away from the air gap and remains the same on the inner circumferential surface of the permanent magnet arrangement. Smaller and larger angles, preferably in the range of 45 ° -90 °, are also possible, provided that the described one-sided reinforcement in the air gap can be implemented. The angles in question can be determined through experiments or simulations.
- the rotating electrical machine further includes one
- Stator which is connected to a component of the machine that is stationary relative to the rotor.
- the connection between the stator and the relevant components can be made directly or via additional components.
- the stator has at least one stator winding, by means of which a
- Magnetic field is to be generated in the air gap described below between rotor and stator (electric motor) or in which current can be generated by means of electromagnetic induction (generator).
- stator electric motor
- generator electromagnetic induction
- the rotor is arranged coaxially to the stator in such a way that the rotor circumferentially surrounds the stator, forming an annular air gap between rotor and stator, and the rotor can rotate around the stator.
- the above-described rotation of the magnetic poles from segment to segment is preferably each 90 °, as explained in more detail below in the exemplary embodiment.
- poles of the same type adjoin one another on the inner circumferential surface of the rotor and poles adjoin one another on the outer circumferential surface of the opposite kind. The consequence of this is that the magnetic flux is significantly increased in front of the inner circumferential surface and significantly reduced on the outer circumferential surface of the magnets of the rotor.
- a ring encompassing the rotor can be optimized for holding and stabilizing the rotor.
- the rotating electrical machine can be a drive unit which is designed for a motorized vehicle which is used to move people and / or goods and which comprises an electric motor.
- a motorized vehicle which is used to move people and / or goods and which comprises an electric motor.
- land vehicles in particular come into consideration as vehicles.
- drives can also be used for watercraft and aircraft, for example in model construction.
- the stator can be connected to the drive unit and / or to a component of the vehicle that is stationary relative to the rotor.
- an electric auxiliary bicycle drive should be mentioned as an application of the drive unit according to the invention.
- the stator is connected to the bicycle frame and the rotor to the rotatable part of the bottom bracket.
- the improvement or optimization of performance and / or installation space and weight can be continued, since the degree of filling of the stator slots, which can be increased with the stator teeth and attached coils, is comparable to the magnetic field that can be generated with the stator and thus affects the performance of the machine.
- a drive unit according to the invention of a motorized vehicle for moving people and / or goods comprises either an electric motor or an electric machine according to the invention designed as a generator according to the above description, since the structure according to the invention can be used both for the electric motor and for the generator.
- a combination of the two is also possible, for example in a serial-hybrid drive in which the energy obtained with the generator is fed to the electric motor, for example, but not restrictively, via an accumulator.
- the electric motor or generator according to the invention of such a drive concept can alternatively also be combined with a generator or electric motor of other designs.
- Such a serial-hybrid drive can be used for a bicycle, for example, but not by way of limitation.
- FIG. 2 shows a coil which can be plugged onto a stator tooth, in a sectional illustration.
- the segment in FIG. 1 shows a stator 1 in part which trapezoidal stator teeth 3 and rectangular stator slots 5 (shown in dashed lines).
- a coil 7 is attached to each stator tooth.
- the coils 7 are constructed and arranged in such a way that the coil flanges 77 directly adjoining one another form the outer circumferential surface 11 of the stator 1 with the outer radius R a of the stator 1.
- the rotor 13 is arranged concentrically to the stator 1 in such a way that an air gap 17 (also referred to as a working gap) exists between the outer circumferential surface 11 of the stator 1 and the inner circumferential surface 15 of the rotor 13.
- the width of the air gap 17 is determined by the circumferentially uniform difference between the inner radius Ri of the inner circumferential surface 15 of the rotor 13 and the outer radius R a of the outer circumferential surface 11 of the stator 1.
- the rotor 13 comprises a permanent magnet arrangement which is formed from a multiplicity of permanent magnets 19.
- the magnets 19 each have a direction of magnetization which is shown in FIG. 1 by the north pole “N” and the south pole “S”.
- the magnets 19 are designed and arranged in such a way that their direction of magnetization always rotates by 90 ° from one to the next, adjacent magnet.
- the circumferential length L u 'of those magnets 19 which have a radial direction of magnetization is a multiple of the circumferential length L u "of the magnets 19 with a direction of magnetization at right angles thereto.
- the magnets 19 are mounted on a ring 21, which serves as a return ring of the rotor 13 and optionally at the same time for stabilization.
- the rotor 13 and the stator 1 are encased in a housing 23, of which only the annular closure closes see is.
- FIG. 2 shows a coil 7, which has a coil former 71 with a rectangular cross section and a central passage 73.
- a multi-layer, tight coil winding 75 is formed on the bobbin 71.
- the coil winding 75 viewed radially, is delimited on the inside and outside (FIG. 1) by a respective coil flange 77.
- the coil body 71 consists of an electrically insulating plastic and has flexible sections 79 on two opposite walls (represented by a kink in the wall). To attach the coils 7 to the stator teeth 3, the distance between these two walls can be increased by exerting a pressure force (shown by two arrows) on the other two walls. The compression causes the flexible sections 79 to be deformed outwards (shown by outwardly directed arrows) and thus an enlargement of the inner cross-section in this direction, so that the coil can be pushed over the outer, larger cross-section of a trapezoidal stator tooth 3.
- the coil body 7 takes on its original shape again and is thereby fixed on the stator tooth 3.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019133409.8A DE102019133409A1 (de) | 2019-12-06 | 2019-12-06 | Stator einer rotierenden elektrischen Maschine und rotierende elektrische Maschine |
PCT/DE2020/200109 WO2021110223A1 (de) | 2019-12-06 | 2020-12-07 | Stator einer rotierenden elektrischen maschine, rotierende elektrische maschine und antriebseinheit mit einer solchen maschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4070437A1 true EP4070437A1 (de) | 2022-10-12 |
Family
ID=74184330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20841882.2A Withdrawn EP4070437A1 (de) | 2019-12-06 | 2020-12-07 | Stator einer rotierenden elektrischen maschine, rotierende elektrische maschine und antriebseinheit mit einer solchen maschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US20230006483A1 (de) |
EP (1) | EP4070437A1 (de) |
CN (1) | CN114766074A (de) |
DE (1) | DE102019133409A1 (de) |
WO (1) | WO2021110223A1 (de) |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5280209A (en) * | 1989-11-14 | 1994-01-18 | The United States Of America As Represented By The Secretary Of The Army | Permanent magnet structure for use in electric machinery |
DE4310226A1 (de) * | 1993-03-31 | 1994-10-06 | Philips Patentverwaltung | Mittels Permanentmagneten erregter elektrischer Motor |
DE102004035724A1 (de) * | 2004-07-23 | 2006-02-16 | Minebea Co., Ltd. | Elektrische Maschine |
US20110012463A1 (en) * | 2007-08-01 | 2011-01-20 | Gerald David Duncan | appliance, rotor and magnet element |
JP2010166788A (ja) * | 2009-01-19 | 2010-07-29 | Denso Corp | 単相交流発電機及びその製造方法 |
JP2012531354A (ja) * | 2009-06-25 | 2012-12-10 | フィスカー オートモーティブ インコーポレイテッド | マルチモーターハイブリッドドライブシステムのための直接的な電気的接続 |
JP5515478B2 (ja) * | 2009-07-17 | 2014-06-11 | 株式会社安川電機 | 周期磁界発生装置およびそれを用いたリニアモータ、回転型モータ |
JP5004110B2 (ja) * | 2010-07-30 | 2012-08-22 | 本田技研工業株式会社 | アウターロータ型突極集中巻き電動機 |
DE102013104392A1 (de) * | 2013-04-30 | 2014-10-30 | Minebea Co., Ltd. | Statoranordnung für eine elektrische Maschine, insbesondere einen bürstenlosen Gleichstrommotor und Verfahren zu deren Herstellung |
WO2015044949A2 (en) * | 2013-09-25 | 2015-04-02 | Tvs Motor Company Limited | Electrical member for electrical machines |
JP6307876B2 (ja) * | 2013-12-26 | 2018-04-11 | トヨタ自動車株式会社 | ステータ、及び、ステータの製造方法 |
CN107210632B (zh) * | 2015-02-25 | 2019-07-16 | 三菱电机株式会社 | 电枢以及旋转电机 |
DE102015203995A1 (de) * | 2015-03-05 | 2016-09-08 | Mahle International Gmbh | Außenrotor einer Vorrichtung zur berührungslosen Übertragung von Drehbewegungen |
DE102015212165A1 (de) * | 2015-06-30 | 2017-01-05 | Robert Bosch Gmbh | Elektrische Maschine mit reduziertem Nutrasten und Drehmomentwelligkeit |
CN207719955U (zh) * | 2017-12-25 | 2018-08-10 | 湖南同能机电科技有限公司 | 一种串联动力装置 |
JP7056443B2 (ja) * | 2017-12-28 | 2022-04-19 | 株式会社デンソー | 回転電機 |
DE102018202943A1 (de) * | 2018-02-27 | 2019-08-29 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Elektromotor |
CN108768016B (zh) * | 2018-05-11 | 2020-03-17 | 南京航空航天大学 | 一种绕组错位轮毂电机定子及绕组错位轮毂电机装置 |
-
2019
- 2019-12-06 DE DE102019133409.8A patent/DE102019133409A1/de active Pending
-
2020
- 2020-12-07 EP EP20841882.2A patent/EP4070437A1/de not_active Withdrawn
- 2020-12-07 CN CN202080084457.9A patent/CN114766074A/zh active Pending
- 2020-12-07 WO PCT/DE2020/200109 patent/WO2021110223A1/de unknown
- 2020-12-07 US US17/778,341 patent/US20230006483A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102019133409A1 (de) | 2021-06-10 |
WO2021110223A1 (de) | 2021-06-10 |
US20230006483A1 (en) | 2023-01-05 |
CN114766074A (zh) | 2022-07-19 |
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