EP4158755A1 - Blechpaketsatz sowie rotor mit auf rotorwelle aufgestecktem blechpaketsatz - Google Patents
Blechpaketsatz sowie rotor mit auf rotorwelle aufgestecktem blechpaketsatzInfo
- Publication number
- EP4158755A1 EP4158755A1 EP21725380.6A EP21725380A EP4158755A1 EP 4158755 A1 EP4158755 A1 EP 4158755A1 EP 21725380 A EP21725380 A EP 21725380A EP 4158755 A1 EP4158755 A1 EP 4158755A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laminated core
- rotor
- laminated
- circumferential
- cores
- 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.)
- Pending
Links
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- 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
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Definitions
- the invention relates to a laminated core set for a rotor of an electrical Maschi ne, in particular strand for a rotor of an electric motor of a motor vehicle drive.
- the invention also relates to a rotor for an electrical machine, in particular for an electric motor of a motor vehicle drive train, with such a laminated core set and a rotor shaft onto which the laminated core set is fitted in such a way that the recesses of axially adjacent laminated cores are arranged rotated by a predetermined angular offset from one another.
- Rotors with rotor skew are already known from the prior art, in which axially adjacent laminated cores de NEN are arranged rotated by a predetermined angular offset zueinan.
- DE 10 2016 212 004 A1 discloses a rotor for an electric machine, in particular for an electric motor for the drive of a motor vehicle with an electric or hybrid drive, with a rotor shaft or a rotor carrier and several rotatably on it by means of a shaft-hub connection arranged laminated rotor stacks, the shaft-hub connection being designed as a spline, with adjacent laminated rotor stacks being pushed onto the rotor shaft or the rotor carrier offset by at least one tooth spacing and thus having an angular offset to one another.
- a (rotor) laminated core set and a rotor constructed from it for an electric motor are to be provided, which is easy to manufacture, enables reliable torque transmission between the laminated cores and a rotor shaft and ensures good running and acoustic properties of the electric motor. Now the skewing of the rotor can be produced easily and a sufficient transmission of the torques can be guaranteed.
- a (rotor) laminated core set for a rotor which has at least a first laminated core made of several axially stacked rotor laminations and at least one second laminated core made of several axially stacked rotor laminations.
- the first laminated core has a (first) internal toothing, in particular a plug-in toothing, for positively rotationally secured fastening on a rotor shaft.
- the second Blechpa ket has a (second) internal toothing, in particular a plug-in toothing, for form-fitting, non-rotatable fastening on the rotor shaft.
- the internal teeth of the first laminated core and of the second laminated core are preferably constructed in the same way, for example with regard to their diameter and their number of teeth.
- the first laminated core forms a (first) magnet carrier, which preferably has a large number of recesses for receiving (permanent) magnets.
- the second laminated core forms a (second) magnet carrier, which preferably has a large number of recesses for receiving (permanent) magnets.
- a circumferential alignment is defined as a relative position, seen in the circumferential direction, between the recesses and the internal toothing of a laminated core.
- the circumferential orientation of the first laminated core is different from the circumferential orientation of the second laminated core. This means that the laminated cores are different in such a way that when the internal teeth of the laminated cores are axially aligned, the recesses of the laminated cores have a circumferential offset to one another, ie are offset to one another / are not axially aligned.
- the recesses of the laminated cores are arranged offset to one another as seen in the circumferential direction when the first laminated core is arranged in a first position on the rotor shaft by means of the internal teeth and when the second laminated core is arranged in a second position on the rotor shaft by means of the internal teeth is.
- the laminated cores are designed differently in relation to the arrangement of the internal toothing seen in the circumferential direction relative to the arrangement of the recesses seen in the circumferential direction.
- the circumferential orientation of the first laminated core and the circumferential orientation of the second laminated core can have an offset in the circumferential direction that is different from a tooth spacing or a multiple of the tooth spacing of the internal toothing. This means that the angular offset of the rotor skew is not dependent on a tooth spacing or a module of the internal toothing, but can be set almost at will. This offers greater flexibility in the design of the internal toothing.
- the offset can correspond to half the tooth spacing or the sum of a multiple of the tooth spacing and half the tooth spacing.
- the laminated core set can have several first laminated cores, each of which has an identical first sheet metal cross section, and several second laminated cores, each of which has an identical second sheet metal cross section, the first sheet metal cross section being different from the second sheet metal cross section.
- the laminated core set can have at least one third laminated core, which has a (third) internal toothing for form-fitting, rotationally secured fastening on the rotor shaft and forms a magnet carrier made up of several axially stacked rotor sheets, the circumferential orientation of the third laminated core being different from the circumferential orientation of the first laminated core and is different from the circumferential orientation of the second laminated core.
- the circumferential orientation of the first laminated core and the circumferential orientation of the second laminated core can have a first offset to one another which corresponds to a third of the tooth spacing
- the circumferential alignment of the first laminated core and the circumferential alignment of the third laminated core have a second offset to one another, which corresponds to two thirds of the tooth spacing.
- the object of the invention is also achieved by a rotor for an electrical machine.
- the rotor has a laminated core set as described and a rotor shaft.
- the laminated core set is slipped onto the rotor shaft in such a way that the recesses of axially adjacent laminated cores are twisted by a predetermined angular offset.
- the set of laminated cores is positively secured against rotation by means of the internal toothing of the individual laminated cores, stacked axially on top of one another and pushed onto the rotor shaft.
- a rotor can be provided with a rotor bevel, which can be manufactured inexpensively and which ensures reliable torque transmission.
- the predetermined angular offset can correspond to the offset between the circumferential orientation of the first laminated core and the circumferential orientation of the first laminated core. This means that a desired angular offset is taken into account in the manufacture of the differently arranged internal gears.
- first laminated cores and several second laminated cores can be regularly alternately plugged onto the rotor shaft in the axial direction, the several first laminated cores and / or the several second laminated cores each by the tooth spacing or a multiple of the tooth spacing of the internal toothing of the first laminated core are arranged rotated in order circumferential direction.
- laminated cores that are formed with the same sheet (cross) cut are arranged rotated by the tooth spacing or a multiple thereof and the sheet stacks that are made with the different sheet (cross) cut are arranged by the due to the different circumferential alignments caused offset are arranged rotated to each other.
- the rotation of the plurality of first laminated cores to one another and / or the rotation of the several second laminated cores to one another can correspond to twice the offset between the first circumferential orientation and the second circumferential orientation.
- a constant rotor inclination with a constant angular offset over the entire axial extent of the rotor is achieved.
- the invention relates to a rotor for an electrical machine.
- Electric machines or electric motors used to drive motor vehicles usually have a stator and a rotatably mounted Ro tor.
- the stator can be laminated, ie it can be assembled from individual stator laminations which are combined to form laminated stacks.
- the rotor can be formed ge sheet metal, that is assembled from individual Ro torblechen combined into laminated cores.
- the rotor laminations and a rotor shaft of the rotor are designed in such a way that the rotor laminations are mounted on a rotor shaft so that they cannot rotate. are animalable.
- a positive shaft-hub connection in particular a special spline, is used between the rotor laminations / rotor laminations and the rotor shaft.
- the rotor has a so-called rotor bevel, ie several laminated cores are arranged on the rotor shaft with an angular offset.
- adjacent rotor lamination stacks have two mutually differently arranged splines, whereby adjacent rotor lamination packages, in particular in the area of permanent magnets received in the rotor laminations, have an angular offset from one another, which results in the rotor being skewed.
- the rotor can have a plurality of laminated rotor stacks placed on the rotor shaft, which are arranged with an axial spacing and with a rotation on the rotor shaft.
- a first laminated rotor core to a second laminated rotor core, no rotation is implemented on the rotor shaft, but rather a twist is implemented by a twisted toothing in the sheet metal section of the second laminated rotor core.
- a third rotor lamination packet is identical in the sheet metal section to the first laminated rotor packet and is arranged with a radial rotation by a certain number of teeth in relation to the first laminated rotor packet.
- magnet pockets arranged in the laminated stacks are arranged by the arrangement of the laminated stacks in such a way that the magnetic pockets of axially adjacent / one behind the other Ro torblechonge are not aligned, but rotated by a certain angle of inclination to one another, creating the inclination of the rotor.
- FIG. 1 shows a perspective illustration of a rotor with a laminated core set and a rotor shaft
- Fig. 2 shows a connection between the laminated core set and the rotor shaft
- 3 shows a detailed section of a perspective view of the rotor
- the laminated core set has a first laminated core 3 and a second laminated core 4.
- the first laminated core 3 and the second laminated core 4 each have internal teeth
- the first laminated core 3 and the second laminated core 4 each form a magnet carrier made up of several rotor laminations axially stacked one on top of the other.
- the magnet carriers each have a large number of recesses 7 for receiving magnets.
- a circumferential alignment is defined as a relative position seen in the circumferential direction between the recesses 7 and the internal toothing 5 egg nes respective (first or second) laminated core 3, 4. That is, a circumferential position of the recesses 7 and thus the magnets to be accommodated therein is determined relative to the rotor shaft 6 by the arrangement of the internal toothing 5.
- the circumferential orientation of the first laminated core 3 is different from the circumferential orientation of the second laminated core 4
- Recesses 7 of the second laminated core 4 are fixed in a (un different from the first circumferential position) second circumferential position by means of the internal teeth 5 on the Ro gate shaft 6.
- the circumferential alignment of the first laminated core 3 and the circumferential alignment of the second laminated core 4 have an offset in the circumferential direction that is different from a tooth spacing or a multiple of the tooth spacing of the internal toothing 5.
- the offset corresponds to Half of the tooth spacing or the sum of a multiple of the tooth spacing and half the tooth spacing.
- the laminated core set 1 can have several first laminated cores 3, each of which has an identical first sheet metal cross section.
- the laminated core set 1 can have several second laminated cores 4, each of which has an identical second sheet metal cross-section.
- the first sheet metal cross section is different from the second sheet metal cross section.
- the rotor 2 is made up of three laminated cores, which are arranged axially stacked (a first laminated core 3, a second laminated core 4 and a first laminated core 3) for exemplary understanding. From the recesses 7 of an axially rearmost laminated core 8, which is a first laminated core 3, are arranged rotated by the offset in the circumferential direction to the recesses 7 of an axially central laminated core 9, which is a second laminated core 4. The Ver rotation between the axially rearmost laminated core 8 and the axially central laminated core 9 is created by using the different sheet metal cross-sections.
- the recesses 7 of the axially central laminated core 9, which is a second laminated core 4 are arranged rotated by the offset in the circumferential direction relative to the recesses 7 of an axially foremost laminated core 10, which is a first laminated core 3.
- the Ver rotation between the axially central laminated core 9 and the axially rearmost laminated core 10 is created by using the different sheet metal cross-sections.
- the recesses 7 of the axially rearmost laminated core 8, which is a first laminated core 3 are arranged rotated by twice the offset in the circumferential direction to the recesses 7 of the axially forwardmost laminated core 10, which is a first laminated core 3, or to a tooth spacing or a multiple of Tooth spacing of the internal toothing 5 arranged rotated.
- FIG. 2 shows a schematic side view of the internal toothing 5, which engages in an external toothing 11 of the rotor shaft 6.
- the internal teeth 5 of the first laminated core 3 and of the second laminated core 4 are pushed onto the rotor shaft 6 in an axially aligned manner.
- the internal gears 5 of the first laminated core 3 and the second laminated core 4 are of the same design, ie the same diameter, the same number of teeth, the same tooth spacing, so that they can intervene in the external toothing 11 of the rotor shaft 6 in a non-rotatable manner.
- the rotor 2 is constructed in such a way that it has the laminated core set 1 and the rotor shaft 6, the laminated core set 1 being pushed onto the rotor shaft 6 in the axial direction in such a way that the recesses 7 of axially adjacent laminated cores 3, 4 are arranged rotated by a predetermined angular offset are (see. Fig. 3).
- the predetermined angular offset corresponds to the offset between the circumferential direction of the first lamination stack 3 and the circumferential orientation of the second lamination stack 4.
- the first plurality of laminated cores 3 are each arranged rotated by a tooth spacing or a multiple of the tooth spacing of the internal toothing 5 in the circumferential direction.
- the plurality of second laminated cores 4 are each arranged rotated in the circumferential direction by a tooth spacing or a multiple of the tooth spacing of the internal toothing 5.
- the rotation of the several first laminated cores 3 to one another corresponds to twice the offset between the circumferential alignment of the first laminated core 3 and the circumferential alignment of the first laminated core 4.
- the torsion of the and several second laminated cores 4 to one another corresponds to twice the offset between the circumferential alignment of the first laminated core 3 and the circumferential orientation of the first laminated core 4.
- the rotor 2 is constructed in the embodiment shown in Fig. 3 for an exemplary understanding of three laminated cores, which are arranged axially stacked (a first laminated core 3, a second laminated core 4 and a first laminated core 3).
- the recess 7 of the axially rearmost laminated core 8, which is a first laminated core 3 is arranged rotated by the offset in the circumferential direction relative to the recess 7 of the axially central laminated core 9, which is a second laminated core 4.
- the recess 7 of the axially central laminated core 9, which is a second laminated core 4 is to the recess 7 of the axially foremost laminated core 10, which is a first Blechpa ket 3, arranged rotated by the offset in the circumferential direction.
- the recess 7 of the axially rearmost laminated core 8, which is a first laminated core 3 is to the Ausspa tion 7 of the axially foremost laminated core 10, which is a first laminated core 3, rotated by twice the offset in the circumferential direction or stood to a Zahnab or Multiples of the tooth spacing of the internal toothing 5 arranged rotated.
- the rotor 2 could, even if this is not shown, have at least one third laminated core, which has internal teeth for form-fitting, rotationally secured fastening on the rotor shaft and forms a magnet carrier made up of several axially stacked rotor laminations, the circumferential direction of the third laminated core different from the circumferential orientation of the first laminated core 3 and different from the circumferential orientation of the second laminated core 4.
- the circumferential orientation of the first laminated core 3 and the circumferential orientation of the second laminated core 4 would have a first offset to one another, which corresponds to a third of the tooth spacing, and the circumferential alignment of the first laminated core 3 and the circumferential alignment of the third laminated core would have a second offset to one another which corresponds to two thirds of the tooth spacing.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020114008.8A DE102020114008A1 (de) | 2020-05-26 | 2020-05-26 | Blechpaketsatz sowie Rotor mit auf Rotorwelle aufgestecktem Blechpaketsatz |
| PCT/DE2021/100384 WO2021239177A1 (de) | 2020-05-26 | 2021-04-28 | Blechpaketsatz sowie rotor mit auf rotorwelle aufgestecktem blechpaketsatz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4158755A1 true EP4158755A1 (de) | 2023-04-05 |
Family
ID=75914208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21725380.6A Pending EP4158755A1 (de) | 2020-05-26 | 2021-04-28 | Blechpaketsatz sowie rotor mit auf rotorwelle aufgestecktem blechpaketsatz |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12542462B2 (de) |
| EP (1) | EP4158755A1 (de) |
| CN (1) | CN115461960A (de) |
| DE (1) | DE102020114008A1 (de) |
| WO (1) | WO2021239177A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022118050A1 (de) * | 2022-07-19 | 2024-01-25 | Bayerische Motoren Werke Aktiengesellschaft | Rotorwelle und Rotor für eine elektrische Maschine sowie elektrische Maschine |
| DE102025106308A1 (de) * | 2025-02-19 | 2026-03-12 | Tk Elevator Innovation And Operations Gmbh | Rotor für eine elektrische Maschine, insbesondere bei einer Aufzugsanlage |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012205191A1 (de) * | 2012-03-30 | 2013-10-02 | Bayerische Motoren Werke Aktiengesellschaft | Vibrationsverhinderung bei Synchronmaschinen |
| CN202737714U (zh) * | 2012-06-06 | 2013-02-13 | 春城控股集团有限公司 | 高速转子磁极为分段式错位的无刷永磁直流电机 |
| US9634530B2 (en) * | 2013-03-15 | 2017-04-25 | Steering Solutions Ip Holding Corporation | Interior permanent magnet motor with shifted rotor laminations |
| EP2991204B1 (de) * | 2013-04-22 | 2019-11-20 | Mitsubishi Electric Corporation | Permanentmagnetmotor |
| JP2014236592A (ja) * | 2013-06-03 | 2014-12-15 | 株式会社ジェイテクト | 回転電機用ロータおよびその製造方法 |
| DE102016212004A1 (de) | 2016-07-01 | 2018-01-04 | Volkswagen Aktiengesellschaft | Rotor mit Rotorschrägung für eine elektrische Maschine und Elektromotor für den Fahrantrieb eines Kraftfahrzeugs |
| CN107659078A (zh) | 2016-07-25 | 2018-02-02 | 阿斯科控股有限公司 | 永磁辅助同步电动机及其转子组件的制造方法 |
| DE112018003942T5 (de) | 2017-08-01 | 2020-05-07 | Denso Corporation | Magnetische Erzeugungseinrichtung für einen Motor, Weichmagnetischer Kern und Verfahren zur Herstellung eines Magneten |
| DE102017011412A1 (de) * | 2017-12-11 | 2018-06-28 | Daimler Ag | Rotor für permanent erregte Elektromaschinen |
| DE102017011989A1 (de) * | 2017-12-23 | 2018-06-28 | Daimler Ag | Rotor für eine Elektromaschine |
| CN208190371U (zh) * | 2018-04-18 | 2018-12-04 | 东风汽车电气有限公司 | 一种永磁同步电机转子 |
| JP7149497B2 (ja) * | 2018-07-20 | 2022-10-07 | 株式会社一宮電機 | ブラシレスモータ及びブラシレスモータの製造方法 |
| CN210404878U (zh) | 2019-07-12 | 2020-04-24 | 精进电动科技股份有限公司 | 一种电机斜极转子 |
-
2020
- 2020-05-26 DE DE102020114008.8A patent/DE102020114008A1/de active Pending
-
2021
- 2021-04-28 WO PCT/DE2021/100384 patent/WO2021239177A1/de not_active Ceased
- 2021-04-28 CN CN202180030504.6A patent/CN115461960A/zh active Pending
- 2021-04-28 US US17/923,096 patent/US12542462B2/en active Active
- 2021-04-28 EP EP21725380.6A patent/EP4158755A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US12542462B2 (en) | 2026-02-03 |
| US20230344289A1 (en) | 2023-10-26 |
| WO2021239177A1 (de) | 2021-12-02 |
| CN115461960A (zh) | 2022-12-09 |
| DE102020114008A1 (de) | 2021-12-02 |
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