EP2022157A1 - Verfahren zur herstellung eines stators und zugehöriger stator - Google Patents
Verfahren zur herstellung eines stators und zugehöriger statorInfo
- Publication number
- EP2022157A1 EP2022157A1 EP07724502A EP07724502A EP2022157A1 EP 2022157 A1 EP2022157 A1 EP 2022157A1 EP 07724502 A EP07724502 A EP 07724502A EP 07724502 A EP07724502 A EP 07724502A EP 2022157 A1 EP2022157 A1 EP 2022157A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stator
- segments
- winding
- hinges
- coil
- 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- Withdrawn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
- H02K1/12—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
- H02K1/148—Sectional cores
-
- 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
Definitions
- the present invention relates to an inner stator of an electrical machine and a method for producing the same, with a stator with stator windings, wherein the stator has a plurality of stator segments, with a plurality of stator poles on which coil support for receiving a respective stator winding are arranged or arranged, wherein two adjacent stator segments are hinged together by hinges or connected.
- the invention also relates to a mecanical a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a tational a graftator graftor graftor a graftator a graftator a graft graft a graft graft graft graft graft graft graft graft a graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft graft
- stator segments In the axial direction of a stator segment, rounded end and recess alternate at one end of the return ring section, so that two adjacent stator segments engage in a comb-like manner can reach each other, wherein the holes of the individual rounded ends of the return ring portion of a stator lamination segment are concentric with the holes of the individual rounded ends of the return ring portion of an adjacent stator lamination segment.
- a metal pin for Biodung a joint axis are introduced and in this way two stator segments articulated store.
- the stator segments are formed identically and each carry a stator pole.
- European patent application EP 0833 427 A1 discloses a generic stator stator whose individual stator laminations are produced as a band. The stator laminations are connected to each other via a thin web, which forms a film hinge. Again, the stator segments are identical and formed with a stator pole.
- stators with insulating bodies applied to the stator poles are also known as coil carriers, which are integrally connected in groups or entirely together.
- European patent application EP 1 499 000 A1 discloses groups of coil carriers connected in one piece, wherein in each case those coil carriers are connected which carry stator windings of the same phase, such that connected coil carriers are, for example, diametrically opposed or 120 ° to one another.
- the connection is made via an arcuately formed at one axial end web, in which preferably a connecting wire rests.
- the individual coil support groups are inserted axially into one another and close in a form-fitting manner via lateral longitudinal projections and corresponding grooves.
- the individual segments are always formed identically.
- the winding of the bobbin is usually done in the assembled state of the stator, ie in the state in which the Stator poles extend radially inwards.
- Such a winding is complicated and requires technically complicated method, wherein the time duration of a Bewicklungsvorgangs is relatively high.
- stators in a segmented design it is possible to wind the individual stator poles separately before assembling the stator and then to assemble them in an additional assembly process. However, this process requires significant manual intervention, so that a high degree of automation is not possible.
- An object of the present invention is to provide a method for producing a stator for an electric machine, in which a winding of the stator poles or the coil carriers arranged thereon in a technically simple manner and with a high degree of automation is possible and at the same time speeds up the manufacturing process so that a time saving and thus a cost saving in the manufacturing process can be achieved.
- a further object of the invention is to provide a stator in which the method according to the invention can be used.
- the individual segments of the stator form a chain or chain-like, for example, by a plastic body, wherein the chain is bent for winding the bobbin so that the stator poles of the main segments after the bending process show radially outward radially outwards and the chain is formed into a substantially closed ring.
- the two ends of the chain are firmly connected together for the state thus formed, in order to achieve a higher stability.
- this intermediate state of the stator during the manufacturing process can be described as "inside-out". This first bending process takes place starting from a straight chain in the direction of the pole backs of the stator segments.
- stator is inserted into the winding machine, in which the coils are wound.
- This can be done for example by means of a linear winder, by which an axial winding of the stator poles from the outside is possible and, for example, layer windings can be produced, which have a higher efficiency of the stator due to higher copper density.
- the winding can be effected by a so-called flyer, by means of which a radial winding of the coils can be achieved.
- stator In a second bending process after winding, the stator is bent back to form a circumferentially completely closed return ring of the stator lamination so that the stator poles of the main segments point radially inwards, so that the stator receives the necessary state for operation.
- the two ends of the stator segment are in turn firmly connected to each other.
- the segmented stator according to the invention for an electrical machine for carrying out the above-described method can have any number of stator poles and is therefore suitable for numerous fields of use, for example for use in an electric motor of an electric motor driven pump.
- the stator segments are preferably formed in the axial direction of a plurality of individual parallel, indirectly or directly adjacent and mutually insulated sheets, the stator segments in the final state of the stator together form a return ring on which the stator poles are arranged, wherein the stator poles each have a return ring portion and a pole leg and preferably one Have pole piece. If no pole piece is provided, the mounting of the coil carrier can be done by simply pushing radially onto the stator pole.
- stator segments which form stator poles are referred to as main segments in the sense of the invention.
- spacer segments are arranged between the main segments, which increase the distance between two radially outwardly extending stator poles in the circumferential direction, so that the accessibility of the stator poles or the coil carrier for a winding from the outside by means of a linear winder allows or improved.
- connection points form hinges, so that the two stator segments are articulated to one another.
- the hinge-like configuration can be achieved, for example, by a film hinge or by a joint.
- the connection points can be arranged on the circumferentially abuttable side faces of the return ring sections of two adjacent stator segments in the radial direction on the outside. This allows a wide rotation of the segments in both directions about the axis of the hinge.
- the invention provides that at least a plurality of stator lamination segments of a stator segment for forming a joint on the side surface of the return ring section can have a perforated projection and a corresponding recess or two perforated projections or two corresponding recesses such that a projection a Statorblechsegments can engage positively in the recess of an adjacent Statorblechsegments, wherein in the axial direction of a joint of a stator alternately a perforated projection and a recess lie one above the other.
- a comb-like engagement of a stator is possible with an adjacent segment to form a plurality of connection points, wherein a fixation of the two stator segments can be made to its rotatable articulation by a connecting means, preferably by a guided through the holes pin.
- the bobbins are preferably made of plastic and can carry the stator windings. They represent insulating body and ensure electrical separation between the winding and stator.
- the bobbins can be formed in several pieces, in particular in the form of two half-shells, which are plugged axially from two sides onto the stator poles.
- locking means may be provided to fix the two half-shells on the stator.
- the two half-shells can also cover the middle of the stator pole.
- the attachment of the bobbin can be done in the inventive manufacturing process of the stator before or after the first bending operation.
- the insulating coil carrier can also be molded or cast onto the stator poles.
- the individual coil carriers to a continuous, preferably one-piece coil carrier body by means of hinges, instead of the articulated connection of the stator segments.
- hinges can be designed in the form of hinges or film hinges.
- two adjacent coil carriers can also have a plurality of hinges.
- the coil carrier body may be formed in several pieces, preferably in two pieces, in the form of two half shells which can be plugged axially onto the stator, and further means for latching fixation of the two shells may be provided.
- this may be cast or molded onto the stator core.
- the coil carriers are not directly connected to one another, but instead intermediate elements are arranged between them, which are hinged to these. As a result, a bridging of the distance between two coil carrier bodies is accomplished as well as an optimal adaptation of the support structure allows the stator.
- the individual independent stator segments are inserted in the coil carrier body or held by the coil carrier body.
- a chain of stator segments which, according to the above-described method steps, is brought into the "inside-out" state in a first bending process and is bent back again after being wound, so that the stator poles of the stator segments point radially inwards, likewise arises.
- a particularly advantageous development of the method according to the invention can be achieved by winding two stator windings belonging to one phase group in succession and connecting them directly to each other during the winding process, wherein the winding wire is guided in an arc shape on one end face of the stator core from one stator winding to the other stator winding in that it approximately cuts the axes of the hinges.
- a phase group is in this case formed by two or more simultaneously energized windings.
- the winding wire is in this process on the front side of the stator.
- the location where the ends of the stator segment string are closedly connected in the stator in its "inside-out" state is within the angle range not detected by the winding wire.
- the coil carriers or the coil carrier bodies can preferably have regions with contours which serve to guide the wire and hold the wire in position. Furthermore, the insulating bobbins or the bobbin carriers can have integrated contact elements for electrically connecting the stator and / or the coil windings.
- the stator of the underlying invention preferably has main segments or stator poles, in which the spine of the corresponding return ring section is formed substantially as a flat surface. Under The back of a segment is understood in this sense, the outward side of a Statorpolsegments with standard stator formation.
- significant material savings can be achieved in the manufacture of the individual stator lamination segments by suitable placement of the sheet metal segments on a metal sheet.
- the spacer segments on the outside convex and concave on the inside so that they represent bridge segments to form a closed return ring and allow a good magnetic flow.
- stator segments or the coil carriers or any intermediate pieces, in particular the ends of the stator segment chain can be positively connected to one another via latching.
- FIG. 1 Statorsegmentkette as a stator belt with film hinges
- FIG. 3 Statorsegmentkette as a stator belt with joints
- FIG. 4 Main and spacer segment joined together with joint
- Figure 5 side surface of the return ring portion of a spacer segment
- FIG. 6 Side surface of the return ring section of a main segment
- FIG. 7 stator in "inside-out” state without coil carrier
- FIG. 8 Stator package in "Inside-Out” state with coil carrier
- FIG. 9 Stator package in "Inside-Out” state with wound coil carriers
- FIG. 1 shows a chain 2 in the form of a straight band of two different kind, laminated stator segments 3, 5, which are arranged alternately in the chain 2.
- Main segments 3 carry the stator poles 4, each having a pole leg 10 and a pole piece 15.
- a return ring section 16 Integrally connected to the pole leg 10 is a return ring section 16, which is part of the return ring 11 for the magnetic circuit of the stator.
- the pole back 20 of a main segment 3 is formed as a flat surface.
- junctions in the form of film hinges 13 adjacent spacer segments 5 are hinged to the main segments 3.
- the spacer segments 5 each form part of the return ring 11 and space the skin segments 4 from each other. On the outside, ie on the side facing away from the pole shoes, they are convex on the inside and concave on the inside.
- the film hinges 13 are arranged on the circumferentially abuttable side surfaces 17 of the return ring sections 16 of two adjacent stator segments 3, 5 in the radial direction on the outside, that is arranged directly in the region of the Polrücken 20. It should be noted that a spacer segment 5 can also be considered as a return ring portion.
- FIG. 2 shows a detail of the stator segment chain 2 according to FIG. 1, with only a single sheet being considered.
- the sheet metal or the sheet metal cutout comprises two main sheet metal segments 31, between which a spacer sheet segment 51 is arranged.
- the term film hinge is used for the entirety of the parallel webs 12.
- FIG. 3 shows a detail of a stator segment chain 2 with main segments 3 and spacer segments 5, which are connected to one another via joints 14.
- a 5 shows a perspective view of the end face 17 of a spacer segment 5 and FIG End face 17 of the spacer segment 5 when making a closed return ring 11 comes to rest.
- FIG. 5 shows the part of the joint 14 formed by the spacer segment
- FIG. 6 shows the part formed by the main segment, wherein both parts are designed to be complementary.
- a perforated projection 18 is integrally formed on the outside in the radial direction, which can engage with a corresponding recess 19 of the adjacent stator lamination segment 31 (see FIG. 6) in a form-fitting manner.
- a recess 19 is provided on the end face 17 of a second stator lamination segment 51, into which a corresponding perforated projection 18 of an adjacent stator lamination segment 31 can engage in a form-fitting manner.
- the two joint parts engage in one another in a form-fitting manner, so that a perforated projection 18 of a main sheet segment 31 and a perforated projection of a spacer sheet segment 51 alternate in the direction of the joint axis and the holes lie substantially concentrically one on top of the other.
- FIG. 4 shows that state of the joint 14 in which the end face 17 of the spacer segment 5 bears against the end face 17 of the return ring section 16 of the main segment 3. Furthermore, FIG. 4 shows a variant embodiment of the individual stator lamination segments 31, 51, in which either a perforated projection 18, see spacer segment 5, or a recess 19 is provided on both sides of a stator lamination segment, see main segment 3. Alternatively, a stator lamination segment 31, 51 may also have a perforated projection have one end and a corresponding recess otherwise.
- FIG. 7 to 9 respectively show the stator 1 according to the invention in the "inside-out" state in which the winding is made.
- the individual stator segments 3, 5 are connected to one another in this state only via the hinges 14.
- stator segment chain 2 can be inserted into the holes provided for the formation of a joint in the Projections 18 of the stator lamination segments 31, 51, as already described, Alternatively, in the case of the stator design with film hinges, for example, a bore can be provided at each end of the stator segment chain 2, into which, after bending the chain 2 into a closed ring, a U-shaped splint is used for fixing the stator core 7.
- FIG. 8 shows the "inside-out" stator 1 with coil carriers 6.
- the coil carriers are made of plastic and form insulating bodies They can be applied to the stator poles 4 before or after the first bending process Alternatively, the coil carriers 6 can also be manufactured separately and plugged onto stator poles 4.
- the coil carriers 6 are designed in several parts, preferably in two parts, in the form of two half shells which are plugged onto the stator poles 4.
- FIG Spool carriers 6 according to FIG. 8 have electrical contact means 8, with which the ends of the stator windings 9 can be contacted
- the stator packet 7 according to FIG. 8 represents the starting point for the winding process.
- the spacer segments 5 are arched inwards and ensure good accessibility to the Coil carriers 6.
- the winding can now be done by means of a linear winder, by which an axial winding of the stator poles 4 is possible and for example Layer windings are produced, which have a higher efficiency of the stator 1 due to higher copper density.
- the winding can be done by a flyer, by which a radial winding of the bobbin 6 is reached.
- the wound coil carriers are shown schematically in FIG.
- the coils 9 are here conically wound so that a higher amount of copper in the stator 1 and thus a higher efficiency is achieved.
- stator 1 to be produced according to the invention is now obtained by bending the stator segment chain 2 in a second bending process after winding to form a completely closed return ring 11 of the laminated stator core 7 in the direction of the pole shoes 15 such that the stator poles 4 of the main segments 3 show radially inward.
- This closed form of the stator 1 according to the invention is shown in FIG.
- the two ends of the chain are in turn firmly connected.
- the coil carriers 6 can also be formed by hinges such that a coherent coil carrier body is formed in which the individual independent ones Stator segments are held.
- the bobbins can also be hinged to each other via intermediate elements. The bending operation of such a stator segment chain is equivalent to the method described above.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610025778 DE102006025778A1 (de) | 2006-05-31 | 2006-05-31 | Verfahren zur Herstellung eines Stators und zugehöriger Stator |
PCT/EP2007/003572 WO2007137656A1 (de) | 2006-05-31 | 2007-04-24 | Verfahren zur herstellung eines stators und zugehöriger stator |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2022157A1 true EP2022157A1 (de) | 2009-02-11 |
Family
ID=38475985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07724502A Withdrawn EP2022157A1 (de) | 2006-05-31 | 2007-04-24 | Verfahren zur herstellung eines stators und zugehöriger stator |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2022157A1 (de) |
DE (1) | DE102006025778A1 (de) |
WO (1) | WO2007137656A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009056855A1 (de) * | 2009-12-03 | 2011-06-09 | Wilo Se | Herstellung eines kettengewickelten Stators für Elektromotoren |
DE102010014627A1 (de) * | 2010-04-12 | 2011-10-13 | Wilo Se | Herstellung des Stators einer elektrischen Maschine |
DE102010026527A1 (de) * | 2010-06-25 | 2012-03-29 | Aumann Gmbh | Verfahren und Vorrichtung zur Bewicklung von Polsternen, insbesondere für Statoren von Innenläufermotoren |
CN201774326U (zh) * | 2010-06-29 | 2011-03-23 | 王誉燕 | 一种电机定子 |
DE102013223727B4 (de) * | 2013-11-20 | 2015-08-06 | Robert Bosch Gmbh | Elektromotor mit einem segmentierten Stator |
DE102015208301A1 (de) | 2015-05-05 | 2016-11-10 | Mahle International Gmbh | Stator und zugehöriges Herstellverfahren |
DE102015225586A1 (de) * | 2015-12-17 | 2017-06-22 | Volkswagen Aktiengesellschaft | Spulenkörper für eine elektrische Spule |
DE102016105510A1 (de) * | 2016-03-23 | 2017-09-28 | Hanning Elektro-Werke Gmbh & Co. Kg | Statorbaugruppe |
JP6791692B2 (ja) * | 2016-09-16 | 2020-11-25 | 東芝ライフスタイル株式会社 | 電動送風機 |
JP6791691B2 (ja) * | 2016-09-16 | 2020-11-25 | 東芝ライフスタイル株式会社 | 電動送風機 |
FR3072517B1 (fr) * | 2017-10-17 | 2020-12-18 | Moving Magnet Tech | Machine electrique toroidale polyphasee |
DE102021101911A1 (de) | 2021-01-28 | 2022-07-28 | Webasto SE | Verfahren und Vorrichtung zum Herstellen eines Stators für einen bürstenloser Gleichstrommotor |
CN216981644U (zh) | 2021-08-25 | 2022-07-15 | 米沃奇电动工具公司 | 电动机和包括电动机的电动工具 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2888142B2 (ja) * | 1993-11-08 | 1999-05-10 | 三菱電機株式会社 | 回転電動機並びにその製造方法 |
JP3704029B2 (ja) * | 2000-07-24 | 2005-10-05 | 三菱電機株式会社 | 始動用電動機の固定子 |
WO2002084842A1 (fr) * | 2001-04-13 | 2002-10-24 | Matsushita Ecology Systems Co., Ltd. | Stator pour moteurs a rotor interne et procede de production |
US6946769B2 (en) * | 2003-05-08 | 2005-09-20 | Asmo Co., Ltd. | Insulator and manufacturing method thereof, and stator for electric rotating machine |
-
2006
- 2006-05-31 DE DE200610025778 patent/DE102006025778A1/de not_active Withdrawn
-
2007
- 2007-04-24 EP EP07724502A patent/EP2022157A1/de not_active Withdrawn
- 2007-04-24 WO PCT/EP2007/003572 patent/WO2007137656A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007137656A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2007137656A1 (de) | 2007-12-06 |
DE102006025778A1 (de) | 2007-12-06 |
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