EP3459158A1 - Rotor einer elektrischen maschine mit einem blechpaket - Google Patents
Rotor einer elektrischen maschine mit einem blechpaketInfo
- Publication number
- EP3459158A1 EP3459158A1 EP17717720.1A EP17717720A EP3459158A1 EP 3459158 A1 EP3459158 A1 EP 3459158A1 EP 17717720 A EP17717720 A EP 17717720A EP 3459158 A1 EP3459158 A1 EP 3459158A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sub
- rotor
- laminated core
- region
- packages
- 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- Withdrawn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
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
- H02K1/27—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
- 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
Definitions
- the invention relates to a rotor of an electrical machine with a laminated core according to the preamble of patent claim 1.
- the object of the invention is to improve such a rotor.
- a rotor of an electric machine with a laminated core which comprises a first sub-package with first laminations and a second sub-package with second laminations and wherein the laminations and the sub-packages are axially joined along a central axis of the laminated core.
- At least one of the sub-packages comprises a fastening region for arranging the laminated core on a carrier element, a circumferential region being designed to be radially offset relative to a circumferential region of an axially adjacent sub-package.
- the laminated core has for interaction with a stator of an electric machine on a magnetic interaction region which is formed by one of the peripheral regions of the sub-packages.
- the rotor is characterized in that the magnetic interaction region comprises a plurality of evenly distributed around the circumference rotor poles with permanent magnets.
- a rotor for a permanent-magnet electric machine wherein a fastening region for fixing to a carrier element is not formed on all partial pacts, but is present in particular only on one of the partial packets.
- a magnetic interaction region of the laminated core is provided at the peripheral region remote from the connection regions.
- a desired unhindered propagation of a rotor magnetic field within the laminated core can be achieved by forming the at least one fastening region on the same inner or outer circumferential region as the connecting regions.
- connection regions and the connecting portions may be staggered radially staggered on the laminated core, wherein in particular in a rotor of an internal rotor machine, the attachment regions are present as tabs and can be arranged offset radially inwardly relative to the connection areas on the laminated core.
- a connection region for connecting sheet metal laminations and partial packages can basically be designed in various ways. The connection region can be realized, for example, by means of a stamped package or have a screwed or riveted connecting bolt or a weld, which is designed solely on the laminated core or together with a connecting bolt.
- each rotor pole consists of two circumferentially adjacent permanent magnets, which are arranged together or separately in the pockets.
- the permanent magnets can be formed monolithic or segmented.
- the rotor may exemplarily have a total of 16 rotor poles or an integral multiple thereof and 32 permanent magnets or the integer multiple thereof.
- the pockets can be made radially open or closed. In the circumferential direction adjacent pockets of two adjacent rotor poles may preferably be separated by a gap.
- a plurality of attachment areas may be formed on a sub-package, which are arranged in the circumferential direction in each case between the connecting areas and preferably symmetrically thereto.
- the connection regions and also the attachment regions can each be designed to be mutually offset by 45 ° on the circumference.
- the sum of the number of connection regions and the number of attachment regions can correspond to the number of rotor poles on a partial package.
- the connecting regions can be arranged asymmetrically to the rotor poles on a sub-package, wherein in a lateral plane of the laminated core the connecting regions form an angle ⁇ to a plane of symmetry of the rotor poles.
- connection region have an axially extending within the laminations recess into which an axially extending over both partial packages profile bar from a weldable material, for example a steel used and welded to the laminations ,
- a weldable material for example a steel used and welded to the laminations
- For captive recording of the profiled bar in a production of the edge region of a recess may have at least one projection for non-positive cooperation with the profile bar, so that this can be clamped or pressed there.
- an axially extending free space can be formed radially between the profile bar and a proximate peripheral area of the laminated core for receiving weld metal.
- This space can also form a cooling channel for guiding a cooling fluid with appropriate dimensioning, so as to cool the rotor and in particular on the magnetic interaction area remote from the radial side.
- Figure 1 is a perspective view of a rotor of an electric machine with a laminated core, which comprises a plurality of axially staggered sub-packages.
- Fig. 2 is a plan view of the rotor of Fig. 1;
- FIG. 3 is a fragmentary frontal view of the laminated core of Figure 1, 2 in a connecting region of the sub-packets ..;
- FIG. 4 shows an axial partial view of the laminated core with the connection region shown in FIG. 3;
- FIG. 5 shows an enlarged partial axial view of the laminated core with a fastening region
- FIG. 6 is an enlarged partial front view of the laminated core of FIG. 5;
- FIG. 8 is an enlarged partial front view of the laminated core with an alternative to FIG. 7 executed connecting region.
- the figures show a rotor 10 of an internal-rotor type electric machine, not illustrated in any more detail, with a laminated core 12 which comprises a total of four sub-packages 14a-d with laminations 16 ad and wherein the laminations 16a-d and the sub-packages 14a-d along a central axis A of Laminated core 12 and the electrical machine are axially joined.
- Each of the sub-packages 14a-d has a radially inner circumferential region 24a-d, a radially outer peripheral region 25a-d and a plurality of circumferentially distributed connecting regions 18a-d for connecting the lamellae 16a-d and for connecting the individual sub-packages 14a-d on.
- the connection areas 18a-d are brought into mutual coincidence with the joined partial packages 14a-d and thus form a plurality of common connection areas 18.
- the connecting regions 18 each have a recess 181 ad extending axially within the laminations 16a-d, in each of which a profiled bar 32 axially extending over all partial packs 14a-d is used made of a weldable material, in the present case a steel with the designation 1 .0122 and by means of two axially extending welds 36 is welded to the laminations 16 ad (Fig. 3, 4).
- protrusions 42 can be formed at the recesses 181 a-d, through which the profiled bars 32 can be pressed or clamped.
- two projections 42 are shown by plastic deformation of the edge portions of a recess 181, while the projections 42 are already provided in Fig. 8 as projecting into the recess 181 lugs on the sheet metal section.
- an axially extending free space 34 is formed between the profile bar 32 and the nearest circumferential area 24 of the laminated core 12, which space can receive the welds 36 or the weld metal.
- the clearance 34 may also or additionally form a cooling channel for guiding a cooling fluid on the rotor 10. Additional connection areas are in the form of onneiernoppen 38, as shown in Figs. 5 and 6.
- only one of the sub-packages 14a-d, in the present case the sub-package 14b comprises a plurality of attachment regions 20b located on a pitch circle for arranging the laminated core 12 on a carrier element, not illustrated here.
- the attachment regions 20b are arranged in the circumferential direction in each case between the connecting regions 18 and symmetrically thereto.
- the peripheral region 24b is formed offset relative to the peripheral regions 24a, c of the axially adjacent laminated cores 14a, c, respectively, as a radially inwardly directed tab and thus radially offset.
- the structural design of the attachment portions 20b can be made depending on the specific requirements. In the example, recesses or openings are provided in order to fix a carrier element there by means of rivets, bolts or the like radially, axially and circumferentially. In Fig. 2 it is visible that the connecting portions 18 and the mounting portions 20b are each offset by 45 ° to each other on the circumference.
- the laminated core 12 for interacting with a stator of the electric machine not shown here, a magnetic interaction region 22, which is formed by one of the peripheral regions 25a-d of the sub-packages 14a-d, in particular from the outer peripheral regions 25a-d.
- the rotor 10 for this purpose comprises a plurality of evenly distributed around the circumference rotor poles 26 with permanent magnets 28.
- the magnetic interaction region 22 is thus formed on the connecting regions 18a-d and also the mounting portion 20b remote circumferential regions 24a-d.
- pockets 30 for accommodating the permanent magnets 28 are formed on the radially outer circumferential regions 25a-d of the partial packages 14a-d.
- Each rotor pole 26 consists of two circumferentially adjacent and V-shaped aligned permanent magnets 28a, b, which are presently arranged in separate and circumferentially closed pockets 30a, 30b.
- the circumferentially adjacent pockets 30 of two adjacent rotor poles are separated on the laminated core 12 by a recess or by a gap 40.
- the rotor 10 has a total of 16 rotor poles with a total of 32 permanent magnets 28. Furthermore, the sum of the number of connection regions 18b and the number of attachment regions 20b corresponds exactly to the number of rotor poles 26 on the partial package 14b.
- the connecting regions 18 are arranged asymmetrically with respect to the rotor poles 26, the connecting regions 18 forming an angle ⁇ to a plane of symmetry S of the rotor poles 26 in a lateral plane of the laminated core 12. Furthermore, to reduce a force acting between the rotor 10 and a stator magnetic detent torque, the sub-packages 14c, d mirrored together, so that the rotor poles 26 of these sub-packages 14c, d offset in the circumferential direction by the angle 2 x ⁇ to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016208692.8A DE102016208692A1 (de) | 2016-05-20 | 2016-05-20 | Rotor einer elektrischen Maschine mit einem Blechpaket |
| PCT/EP2017/059088 WO2017198406A1 (de) | 2016-05-20 | 2017-04-18 | Rotor einer elektrischen maschine mit einem blechpaket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3459158A1 true EP3459158A1 (de) | 2019-03-27 |
Family
ID=58548714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17717720.1A Withdrawn EP3459158A1 (de) | 2016-05-20 | 2017-04-18 | Rotor einer elektrischen maschine mit einem blechpaket |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10601270B2 (de) |
| EP (1) | EP3459158A1 (de) |
| CN (1) | CN109155555B (de) |
| DE (1) | DE102016208692A1 (de) |
| WO (1) | WO2017198406A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017223622A1 (de) * | 2017-12-21 | 2019-06-27 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Rotor für einen Elektromotor und Elektromotor |
| CN113491058B (zh) * | 2018-12-28 | 2023-09-26 | 日本发条株式会社 | 层叠铁芯以及层叠铁芯的制造方法 |
| DE102019124186A1 (de) * | 2019-09-10 | 2021-03-11 | Schaeffler Technologies AG & Co. KG | Rotor, Elektromotor und Verfahren zur Unwuchtverringerung eines Rotors |
| DE102020205448A1 (de) * | 2020-04-29 | 2021-11-04 | Robert Bosch Gesellschaft mit beschränkter Haftung | Stator einer elektrischen Maschine |
| GB2605780A (en) * | 2021-04-09 | 2022-10-19 | Equipmake Ltd | A rotor for a permanent magnet electrical machine |
| FI20225194A1 (en) * | 2022-03-04 | 2023-09-05 | Verge Motorcycles Oy | Rotor for electric motor, electric motor, and electric motorcycle |
| FR3157975A1 (fr) * | 2023-12-27 | 2025-07-04 | VALEO JAPAN Co. Ltd | Empilement axial de plaques metalliques pour un rotor de machine electrique |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT10720B (de) | 1900-12-29 | 1903-02-10 | Paul Hallot | Eisenbahnwagen-Reibungsbremse. |
| JPS6464548A (en) * | 1987-09-03 | 1989-03-10 | Fanuc Ltd | Rotor construction of synchronous motor |
| US5704111A (en) * | 1995-05-24 | 1998-01-06 | General Electric Company | Method for making a rotor for an electric motor |
| DE19955050A1 (de) | 1999-11-15 | 2001-06-07 | Bosch Gmbh Robert | Rotorkörper |
| US6408502B1 (en) * | 2001-05-18 | 2002-06-25 | General Electric Company | Method for a resilient rotor core assembly |
| JP2006158012A (ja) | 2004-11-25 | 2006-06-15 | Honda Motor Co Ltd | 自動車用ipm型モータに使用される永久磁石の製造方法 |
| KR100651296B1 (ko) * | 2005-08-04 | 2006-11-29 | 엘지전자 주식회사 | 모터의 영구 자석의 결합 구조 및 방법 |
| US8035273B2 (en) * | 2005-12-08 | 2011-10-11 | A.O. Smith Corporation | Rotor assembly having two core portions each with a reduced back portion |
| AT10720U1 (de) * | 2006-01-27 | 2009-08-15 | Magna Drivetrain Ag & Co Kg | Rotor und herstellung für elektromotor mit untersetzungsgetriebe |
| JP4881118B2 (ja) * | 2006-09-29 | 2012-02-22 | 本田技研工業株式会社 | ロータコアの製造方法 |
| US8127429B2 (en) | 2006-11-27 | 2012-03-06 | Honda Motor Co., Ltd. | Method for producing ring core |
| DE102009017850A1 (de) | 2009-04-17 | 2010-10-21 | Siemens Aktiengesellschaft | Läufer für eine elektrische Maschine |
| CN102111025B (zh) * | 2009-12-25 | 2013-03-27 | 中山大洋电机股份有限公司 | 一种电动机的永磁转子 |
| MX2013003006A (es) * | 2010-09-17 | 2013-04-29 | Hoeganaes Ab Publ | Rotor para maquina de polo modulado. |
| EP2451049A1 (de) * | 2010-11-03 | 2012-05-09 | Brusa Elektronik AG | Rotor mit Blechpaket für eine Elektromaschine, insbesondere für eine Synchronmaschine |
| JP5565365B2 (ja) | 2011-04-01 | 2014-08-06 | 株式会社デンソー | 回転電機のロータおよびその製造方法 |
| JP5382156B2 (ja) * | 2012-03-06 | 2014-01-08 | 三菱電機株式会社 | 回転電機 |
| DE102012215241A1 (de) * | 2012-08-28 | 2014-03-06 | Siemens Aktiengesellschaft | Rotor einer elektrischen Maschine und elektrische Maschine |
| KR102150310B1 (ko) * | 2013-07-16 | 2020-09-02 | 삼성전자주식회사 | 로터 및 그 제조 방법 |
| JP6656149B2 (ja) * | 2014-06-23 | 2020-03-04 | 日産自動車株式会社 | 回転電機用同期ロータ |
-
2016
- 2016-05-20 DE DE102016208692.8A patent/DE102016208692A1/de not_active Withdrawn
-
2017
- 2017-04-18 WO PCT/EP2017/059088 patent/WO2017198406A1/de not_active Ceased
- 2017-04-18 CN CN201780031064.XA patent/CN109155555B/zh not_active Expired - Fee Related
- 2017-04-18 EP EP17717720.1A patent/EP3459158A1/de not_active Withdrawn
- 2017-04-18 US US16/303,031 patent/US10601270B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016208692A1 (de) | 2017-11-23 |
| CN109155555A (zh) | 2019-01-04 |
| US20190207444A1 (en) | 2019-07-04 |
| WO2017198406A1 (de) | 2017-11-23 |
| US10601270B2 (en) | 2020-03-24 |
| CN109155555B (zh) | 2020-11-13 |
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