CN111194515A - Stator and electric machine having a stator - Google Patents
Stator and electric machine having a stator Download PDFInfo
- Publication number
- CN111194515A CN111194515A CN201880067287.6A CN201880067287A CN111194515A CN 111194515 A CN111194515 A CN 111194515A CN 201880067287 A CN201880067287 A CN 201880067287A CN 111194515 A CN111194515 A CN 111194515A
- Authority
- CN
- China
- Prior art keywords
- stator
- slot
- shielding
- shielding element
- elements
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
- H02K3/487—Slot-closing devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/40—Windings characterised by the shape, form or construction of the insulation for high voltage, e.g. affording protection against corona discharges
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/42—Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
Abstract
The invention relates to a stator (1) of an electrical machine, having a stator lamination stack (2) with a stator axis (4) and slots (3) arranged in the stator lamination stack (2), wherein the grooves (3) each have a groove base (3.1) and a slot-like groove opening (3.2) facing away from the groove base (3.1), wherein electrically insulating carrier elements (6.1) having slot insulation (6) are arranged in the slots (3), which accommodates a plurality of electrical conductors (5) of an electrical winding and in which at least one electrically conductive and slot-opening-side shielding element (6.2) of the slot insulation (6) is arranged on the carrier element (6.1), the carrier element (6.1) is designed in one piece and overlaps in a region (9), wherein the carrier element (6.1) forms a closed cross section by overlapping.
Description
Technical Field
The present invention relates to a stator of an electric machine. The invention further relates to an electric machine having such a stator.
Background
Slot closures are known from the prior art for mechanically closing the slots and for electrically insulating the winding wire from the lamination stack of the stator. An electric field is generated between the uppermost conductor in the stator slot of the electric machine and the rotor, which electric field, as a result of the actuation by means of the pulse inverter, leads to high-frequency alternating voltages induced on the rotor and, if the rotor shaft is not insulated, to high-frequency leakage currents. These described effects have a largely adverse effect on the required electromagnetic compatibility. Furthermore, the electric charges induced by the electric field on the rotor lead to electric shocks in the grease film of the bearings, in particular of the ball bearings, which greatly shortens their service life.
Disclosure of Invention
The invention relates to a stator, namely a stator of an electric machine, having a stator lamination stack with a stator axis and slots arranged in the stator lamination stack, wherein the slots each have a slot bottom and a slot-like slot opening facing away from the slot bottom, wherein electrically insulating carrier elements of slot insulation are arranged in the slots, which receive a plurality of electrical conductors of an electrical winding, and wherein at least one electrically conductive shielding element of the slot insulation, which is arranged on the slot opening side, is arranged on the carrier element, according to the type of the independent claim 1. The carrier elements are formed in one piece, wherein the carrier elements overlap in one region and form a closed cross section by the overlap. Here, the closed cross section can be understood as a substantially closed cross section. The overlapping region is formed by an end region of the carrier element. Preferably, the shielding element is arranged at least in the slot opening or in the region of the slot opening.
The invention also relates to an electric machine of the type according to independent claim 13, that is to say an electric machine having a stator.
According to the invention, an electrically conductive shielding element is provided which causes a shielding of the electric field as long as it is suitably electrically connected to the stator lamination stack and to the ground or-without electrical contact being necessary-is placed so close to the inner surface of the slot that only the resulting capacitive connection to the stator suitably connected to the ground leads to a charge movement that substantially minimizes the electric field. In order to reliably establish such a contact, the side faces of the slot insulation can also be provided with shielding means, since a reliable contact pressure of the shielding, for example on the tooth tips in the radial direction, cannot be ensured due to tolerance stack-up of the conductors.
If the amount of magnetic alternating flux in the yoke results in an induced voltage around the cross section of the yoke, which may lead to burning of the shield, it may be necessary to reduce the axial conductivity by segmentation.
Preferably, the at least one shielding element of the slot insulation is arranged on a side of the carrier element facing away from the electrical conductor. Thereby shielding the electric field towards the rotor of the electric machine.
The measures cited in the dependent claims make it possible to realize advantageous developments and improvements of the stator specified in the independent claims.
The shielding element preferably has a coating which is designed as a paint layer, a film or a metal sheet.
The overlapping region is advantageously arranged in the groove base, wherein the shielding element is located on the opposite side of the carrier element to the overlapping region. Alternatively, the overlapping region is arranged in the groove opening or in the region of the groove opening, wherein the shielding element is at least located on the overlapping region of the carrier element.
In this way, portions of the carrier element overlap either in the region of the groove base or alternatively in the region of the groove opening, wherein the shielding element is arranged on the groove side. The shielding element is arranged here on the outer circumferential surface of the outer part of the carrier element. Preferably, the overlapping portions are legs of the carrier element.
If the overlap is arranged in the slot opening, the first leg of the carrier element preferably completely overlaps the second leg of the carrier element. Preferably, the shielding element completely overlaps the first leg in this case. Particularly preferably, the shielding element extends at least on one side over approximately half the height of the lateral edge of the groove.
It is further advantageous if the overlapping region is arranged on the side facing away from the electrical conductor.
It is further advantageous if a plurality of shielding elements are arranged one behind the other in each case in the axial direction with respect to the stator axis on at least one of the carrier elements, which shielding elements are electrically separated from one another and are electrically connected in each case on at least one side to the stator lamination stack. This has the advantage that the shielding element does not short the laminations of the stator lamination stack over the entire length of the slot or stator lamination stack, but only over a limited axial section, so that the parasitic currents induced by the magnetic field are kept sufficiently small in the axial direction.
Preferably, the at least one shielding element extends completely or partially from the slot opening along at least one side edge of the slot. Preferably, the shielding element can also be guided over the entire surface of the cross section of the carrier element.
It is further advantageous if a plurality of shielding elements, which are electrically separated from one another, are arranged one behind the other in each case in the axial direction with respect to the stator axis on at least one of the carrier elements, wherein the shielding elements have a width, measured transversely to the axial direction, which is smaller than the width of the slot opening of the associated slot in each case, and the shielding elements are electrically connected to the stator lamination stack by at least one web.
Preferably, the at least one tab extends from the slot opening, either completely or partially, along at least one side edge of the slot. Preferably, the webs can also be guided over the entire surface of the cross section of the carrier element. "tab" can refer to an electrical contact pad (Kontaktfahne).
It is further advantageous if adjacent shielding elements have a spacing in the range between 10 μm and 200 μm, in particular 50 μm, in the axial direction.
The shielding element is formed over a large area on the carrier element despite the interruptions formed between the shielding element, so that the shielding effect is only not significantly reduced by the interruptions.
It is further advantageous if a single strip-shaped shielding element is provided on at least one of the carrier elements, said shielding element having a width measured transversely to the axial direction, which is smaller than the width of the slot opening of the associated slot, and said shielding element being electrically connected to the stator lamination stack by means of at least one web.
This has the advantage that the shielding element does not short the lamination of the stator lamination stack over the entire length of the slot or the stator lamination stack, but only in the region of at least one web of the shielding element. Thereby, parasitic currents in the axial direction generated by magnetic field induction are almost completely suppressed. The area of the shielding element is greater in the second exemplary embodiment than in the first exemplary embodiment due to the absence of interruptions, so that the shielding effect is also sufficient here.
Preferably, the at least one tab extends from the slot opening, either completely or partially, along at least one side edge of the slot. Preferably, the webs can also be guided over the entire surface of the cross section of the carrier element.
It is further advantageous if a single shielding element is provided on at least one of the carrier elements, which shielding element has a raised portion with a width measured transversely to the axial direction, which width is in each case smaller than the width of the slot opening of the associated slot, and which raised portion has a longitudinal extent in the axial direction and has a web which is electrically connected to the stator lamination stack and has the same height as the raised portion, wherein electrically insulating means are arranged on regions which are deeper relative to the raised portion and which are not raised. Thus, a further alternative embodiment can be implemented for the slot insulation.
Preferably, the at least one tab extends from the slot opening, either completely or partially, along at least one side edge of the slot. Preferably, the webs can also be guided over the entire surface of the cross section of the carrier element.
It is further advantageous if the width of the shielding element is smaller than the width of the slot opening by at most 2/3% of the thickness of the slot insulation and/or if the axial length of the web is measured at most 5% of the length of the lamination stack in the axial direction.
Preferably, the at least one shielding element is respectively bonded, soldered, painted, sprayed, in particular thermally sprayed, drop-coated or evaporated onto the carrier element.
Preferably, the at least one shielding element is a non-ferromagnetic structure, for example made of aluminum, tin, copper, silver, gold.
It is further advantageous if the shielding element has a length in the range of 3mm to 5cm along the longitudinal direction and/or if the layer thickness of the at least one shielding element is in the range of 1 μm to 100 μm.
Preferably, the at least one shielding element is configured longer than the stator lamination stack in the axial direction on at least one of the axial stator ends.
It is further advantageous to use as shielding element an uncalendered or partially calendered insulating paper.
Drawings
Embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the drawings:
fig. 1 shows a sectional view of a stator according to the invention according to a first embodiment;
fig. 2 shows a top view of one of the slots of the stator according to fig. 1;
fig. 3 shows a top view of a folded sheet for producing a slot insulation according to a first embodiment;
fig. 4 shows a schematic illustration of a cross-sectional view of a folded-over slot insulation according to a first embodiment;
fig. 5 shows a sectional view of a stator according to the invention according to a second embodiment;
fig. 6 shows a top view of one of the slots of the stator according to fig. 5;
fig. 7 shows a top view of a slot insulation-folded sheet for producing a slot insulation according to a second embodiment;
FIG. 8 shows a schematic representation of a cross-sectional view of a folded-over slot insulation according to a second embodiment;
FIG. 9 shows a top view of a slot insulation-folded sheet for making an alternative slot insulation;
FIG. 10 shows a top view of a slot insulation-folded sheet for making another alternative slot insulation;
figure 11 shows a top view of one of the slots of a stator according to the invention according to another embodiment; and is
Fig. 12 shows a cross-sectional view of a stator according to the invention according to another embodiment.
Detailed Description
Fig. 1 shows a sectional view of a stator according to the invention of an electric machine according to a first embodiment.
The stator 1 has a stator stack 2 and slots 3 arranged in the stator stack 2, which extend, for example, in the direction of a stator axis 4 of the stator stack 2 and in which a plurality of electrical conductors 5 of at least one electrical winding are arranged. The stator lamination stack 2 is formed by a stack of laminations made of electrical sheet steel (elektrobech), between which respective insulation can be provided for avoiding eddy currents. The slots 3 of the stator 1 are formed between the teeth 1.1 of the stator 1 and each have a slot base 3.1 and a slot-like slot opening 3.2 facing away from the slot base 3.1. The cross section of the slot openings 3.2 of the stator 1 is narrowed in each case, since the teeth 1.1 of the stator 1 have a projecting tooth tip 1.2 on their end facing away from the slot base 3.1, which projects in a shoulder-like manner into the respective slot 3.
In the slot 3, a carrier element 6.1 of a slot insulation 6 is arranged, which accommodates the conductor 5 of the electrical winding. The slot insulation 6 comprises an electrically insulating carrier element 6.1 and at least one shielding element 6 of electrically conductive material arranged on the carrier element 6.1. The electrically conductive shielding element 6.2 is arranged on the carrier element 6.1. The carrier element 6.1 is formed in one piece and has a closed cross section, which is produced by the overlapping of the carrier elements 6.1. The region 9 is formed as a result of said overlap. In other words, the carrier element 6.1 of the slot insulation 6 closes the slot opening 3.2 of the slot 3, wherein the carrier element completely surrounds or encloses the conductor 5 of the electrical winding. The carrier element 6.1 holds the electrical conductors 5 in the respective groove 3. The overlapping region 9 is arranged on the side facing away from the electrical conductor 5. The portions 6.1.1 and 6.1.2 of the carrier element 6.1 overlap in the region of the groove base 3.1. The overlapping portions 6.1.1 and 6.1.2 can refer to the legs of the carrier element 6.1.
At least one shielding element 6.2 of the slot insulation 6 is arranged on the side of the carrier element 6.1 facing away from the electrical conductor 5 and serves to shield the electrical field towards a rotor 8 of the electrical machine.
The at least one shielding element 6.2 is a coating, a paint layer, a film or a metal sheet. In this case, at least one shielding element 6.2 of the slot insulation 6 can be glued, soldered, painted, sprayed, drip-coated or evaporated onto the carrier element 6.1.
The carrier element 6.1 can preferably be an uncalendered or partially calendered insulating paper. Alternatively, the carrier element 6.1 can consist of a synthetic aramid polymer or be an insulating film or tape.
According to a first exemplary embodiment, at least one shielding element 6.2 is respectively applied to the slot insulation 6 in a first step.
In a second step, the finished slot insulation 6 is pushed as one piece into the respective slot 3. The shielding element 6.2 extends on both sides over approximately half the circumference of the carrier element 6.1.
The groove insulation 6 is inserted into the groove 3 in such a way that its carrier elements 6.1 are each arranged in the associated groove 3 immediately below the tooth crests 1.2 and its at least one shielding element 6.2 is each arranged at least in some areas in the slot-like groove openings 3.2 between the tooth crests 1.2. In order to ensure electrical contact of at least one shielding element 6.2 with the stator lamination stack 2 after the installation of the slot insulation 6, the shielding elements 6.2 are in each case formed wider than the slot openings 3.2 of the stator 1 in the first exemplary embodiment, so that the shielding elements 6.2 extend beyond their slot openings 3.2 in each case into the region of the slots 3 below the respective tooth crests 1.2 and are in each case in electrical contact with a shoulder of the tooth crests 1.2. The shielding element 6.2 extends on both sides over approximately half the height of the side edges 3.3, 3.4 of the groove 3.
Fig. 2 shows a top view of one of the slots 3 of the stator according to the invention according to fig. 1.
According to a first embodiment, on each of at least one, for example in the slot insulation 6, a plurality of shielding elements 6.2 are arranged one behind the other in the axial direction x with respect to the stator axis 4, wherein these shielding elements 6.2 are electrically separated from one another and are each electrically connected to the stator lamination stack 2 on at least one side, for example on both sides.
According to a first embodiment, the shielding elements 6.2 of the stator 1 are made of aluminum, copper, silver or gold, respectively.
The distance a between the shielding elements 6.2, which are, for example, rectangular or square, is, for example, between 10 μm and 200 μm, in particular 50 μm, in each case. Due to this small distance between the shielding elements 6.2, a sufficient shielding effect is achieved despite the interruptions between the shielding elements 6.2. The shielding elements 6.2 each have a thickness of between 1 μm and 100 μm, in particular 5 μm.
The slot insulation 6 projects from its slot 3, for example, in the axial direction x with respect to the stator axis 4. The shielding element 6.2 of the slot insulation 6 can thus additionally exert a shielding effect in the region between the winding head (Wickelkopf) of the stator 1 and the short-circuit ring of the rotor 8, since in this way a capacitive coupling between the winding head of the stator 1 and the short-circuit ring or the balancing disk or the component of the rotor 8 is prevented.
Fig. 3 shows a plan view of a slot insulation-folded sheet for constructing the slot insulation 6 according to the first embodiment. The folded sheet has a carrier element 6.1, wherein shielding elements 6.2, which are rectangular or square in configuration, are arranged one behind the other at a distance a to the carrier element 6.1. At the fold line 7, the folded sheet can be folded in order to obtain the slot insulation 6, as shown in fig. 4.
Fig. 5 shows a sectional view of a stator according to the invention according to a second embodiment, and fig. 6 shows a top view of one of the slots of a stator according to the invention according to the second embodiment.
The second exemplary embodiment differs from the first exemplary embodiment in that a single strip-shaped shielding element 6.2 is provided on at least one of the slot insulations 6, which shielding element has a width B1, measured transversely to the axial direction x, i.e. along the direction z, which is smaller than the width B2 of the slot opening 3.2 of the associated slot 3, and is electrically connected to the stator lamination stack 2 via at least one, for example two, webs 10.
The shielding element 6.2 is thus electrically connected to the stator lamination stack 2 only via at least one web 10, wherein the at least one web 10 has a width B3 measured in the axial direction x with respect to the stator axis 4, which can correspond to the thickness D of one or more laminations of the stator lamination stack 2 and is, for example, in the range between 3mm and 5 cm.
According to a second exemplary embodiment, the shielding elements 6.2 are each designed as a continuous, rectangular strip, on which webs 10 are arranged, for example, in the middle and on both sides. As in the first exemplary embodiment, at least one web 10 of the shielding element 6.2 projects below the tooth tip 1.2 of the respective groove 3 and in this way makes electrical contact on the shoulder of the tooth tip 1.2. The measurement of the axial length of the web 10 is here a maximum of 5% of the lamination stack length in the axial direction x.
Fig. 7 shows a plan view of a slot insulation-folded sheet for constructing the slot insulation 6 according to the second embodiment. The folded sheet has a carrier element 6.1, wherein a shielding element 6.2 is arranged on the carrier element 6.1. The shielding element 6.2 has a shape in the form of a plus sign or a cross. The folded sheet can be folded at fold lines 7 for obtaining a slot insulation 6 for the stator as shown in fig. 8. Once the slot insulation 6 has been inserted into the stator slot, the portions 6.1.1 and 6.1.2 of the carrier element 6.1 overlap in the region of the slot base 3.1. Alternatively, the overlap can also be carried out in the region of the slot opening 3.2.
Fig. 9 shows an alternative slot insulation-folded sheet. The slot insulation fold has a carrier element 6.1, wherein a shielding element 6.2 is arranged on the carrier element 6.1. The shielding element 6.2 has a rectangular bottom surface. The shielding element 6.2 has a first region 11 which is designed to be higher or thicker than a second region 12 which is designed to be flatter or thinner. The first region 11 has a shape configured as a plus sign or a cross. An additional insulating layer 6.3 is arranged or applied on the flat second region 12. At the folding line 7, the folded sheet can be folded in order to obtain the slot insulation 6 for the stator. As soon as the slot insulation 6 is inserted into the slot of the stator, the sections 6.1.1 and 6.1.2 of the carrier element 6.1 overlap in the region of the slot base 3.1.
Figure 10 shows another alternative slot insulation-folded sheet. In contrast to the slot insulation folded sheet according to fig. 9, it is designed such that, once the slot insulation 6 has been inserted into the slot of the stator, the overlapping of the sections 6.1.1 and 6.1.2 of the carrier element 6.1 takes place in the region of the slot opening 3.2.
Fig. 11 shows a top view of one of the slots of a stator according to the invention according to another embodiment. This alternative embodiment combines the features of figures 2 and 5.
The stator 1 has a plurality of shielding elements 6.2, which are arranged one behind the other in the axial direction x with respect to the stator axis 4. Each of the shielding elements 6.2 has a width B1 measured transversely to the axial direction x. The measured widths B1 are each smaller than the width B2 of the associated slot opening 3.2 of the slot 3. The shielding element 6.2 is electrically connected to the stator lamination stack 2 via at least one, for example two, webs 10.
The shielding element 6.2 is thus electrically connected to the stator lamination stack 2 only via at least one web 10, wherein the at least one web 10 has a width B3 measured in the axial direction x with respect to the stator axis 4, which can correspond to the thickness D of one or more laminations of the stator lamination stack 2 and is, for example, in the range between 3mm and 5 cm.
According to a further embodiment, the shielding elements 6.2 are each designed as a single rectangular strip, on which, for example, webs 10 are arranged in the middle and on both sides. As in the first exemplary embodiment, at least one web 10 of the shielding element 6.2 projects below the tooth tip 1.2 of the respective groove 3 and in this way makes electrical contact on the shoulder of the tooth tip 1.2.
Fig. 12 shows a sectional view of a stator according to the invention of an electric machine according to another embodiment. In contrast to fig. 1, the portions 6.1.1 and 6.1.2 of the carrier element 6.1 are arranged in such a way that an overlap is arranged in the region of the slot opening 3.2. In this variant, the shielding element 6.2 is arranged as before in the region of the slot opening 3.2. The shielding element 6.2 is located at the end of the slot insulation 6 opposite the overlapping region 9. The first leg 6.1.1 completely overlaps the second leg 6.1.2, the first leg 6.1.1 completely overlapping the shielding element 6.2. The shielding element 6.2 extends on one side over approximately half the height of the right edge 3.4 of the groove 3. This enables a further alternative design of the slot insulation 6.
Claims (13)
1. Stator (1) of an electrical machine having a stator stack (2) with a stator axis (4) and slots (3) arranged in the stator stack (2), wherein the grooves (3) each have a groove base (3.1) and a slot-like groove opening (3.2) facing away from the groove base (3.1), wherein electrically insulating carrier elements (6.1) having slot insulation (6) are arranged in the slots (3), which accommodates a plurality of electrical conductors (5) of an electrical winding and in which at least one electrically conductive and slot-opening-side shielding element (6.2) of the slot insulation (6) is arranged on the carrier element (6.1), the carrier element (6.1) is designed in one piece and overlaps in a region (9), wherein the carrier element (6.1) forms a closed cross section by overlapping.
2. Stator (1) according to claim 1, characterized in that the overlapping region (9) is arranged in a groove base (3.1), wherein the shielding element (6.2) is on the opposite side of the carrier element (6.1) to the overlapping region (9).
3. Stator (1) according to claim 1, characterized in that the overlapping region (9) is arranged in the slot opening (3.2) or in the region of the slot opening (3.2), wherein the shielding element (6.2) is at least on the overlapping region (9) of the carrier element (6.1).
4. Stator according to any of the preceding claims, characterized in that the overlapping area (9) is arranged on a side facing away from the electrical conductor (5).
5. Stator (1) according to one of the preceding claims, characterized in that a plurality of shielding elements (6.2) are arranged one behind the other in each case on at least one of the carrier elements (6.1) in the axial direction (x) with respect to the stator axis (4), which shielding elements are electrically separated from one another and are in each case electrically connected on at least one side with the stator lamination stack (2).
6. Stator (1) according to one of the preceding claims, characterized in that a plurality of shielding elements (6.2) are arranged one behind the other on at least one of the carrier elements (6.1) in each case along an axial direction (x) with respect to the stator axis (4), which shielding elements are electrically separated from one another, wherein the shielding elements (6.2) have a width (B1) measured transversely to the axial direction (x) which is in each case smaller than the width (B2) of the slot opening (3.2) of the associated slot (3), and the shielding elements (6.2) are electrically connected to the stator lamination stack (2) by means of at least one tab (10).
7. Stator (1) according to one of the claims 5 to 6, characterized in that the adjacent shielding elements (6.2) have a pitch in the range between 10 μm and 200 μm, in particular 50 μm, along the axial direction (x).
8. Stator (1) according to one of claims 1 to 4, characterized in that a single strip-shaped shielding element (6.2) is arranged in each case on at least one of the carrier elements (6.1), which shielding element has a width (B1), measured transversely to the axial direction (x), which is in each case smaller than the width (B2) of the slot opening (3.2) of the associated slot (3), and which shielding element is electrically connected to the stator lamination stack (2) by means of at least one web (10).
9. Stator (1) according to one of claims 1 to 4, characterized in that a single shielding element (6.2) is arranged on at least one of the carrier elements (6.1) in each case, which shielding element has an elevation (11) with a width (B1) measured transversely to the axial direction (x) which is in each case smaller than the width (B2) of the slot opening (3.2) of the associated slot (3), and which has a longitudinal extent in the axial direction and has a web (10) which is electrically connected to the stator lamination stack (2) and which has the same height as the elevation (11), wherein electrically insulating means (6.3) are arranged at a greater depth in relation to the elevation (11) on the non-elevated region (12).
10. Stator (1) according to one of claims 6 to 9, characterized in that the width of the shielding element (6.2) is smaller than the width of the slot opening (3.2) by at most 2/3 of the thickness of the slot insulation (6) and/or the axial length of the tabs (10) is measured at most 5% of the lamination stack length in the axial direction (x).
11. Stator (1) according to one of the preceding claims, characterized in that the shielding element (6.2) has a length in the longitudinal direction in the range of 3mm to 5cm and/or the layer thickness of the at least one shielding element (6.2) is in the range of 1 μ ι η to 100 μ ι η.
12. Stator (1) according to one of the preceding claims, characterized in that as shielding element (6.2) use is made of non-calendered or partially calendered insulating paper.
13. Electric machine with a stator (1) according to any of the preceding claims.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017218451.5A DE102017218451A1 (en) | 2017-10-16 | 2017-10-16 | Stator and electric machine with stator |
| DE102017218451.5 | 2017-10-16 | ||
| PCT/EP2018/074572 WO2019076543A1 (en) | 2017-10-16 | 2018-09-12 | Stator and electric machine having a stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111194515A true CN111194515A (en) | 2020-05-22 |
| CN111194515B CN111194515B (en) | 2022-08-30 |
Family
ID=63557489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880067287.6A Active CN111194515B (en) | 2017-10-16 | 2018-09-12 | Stator and electric machine having a stator |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111194515B (en) |
| DE (1) | DE102017218451A1 (en) |
| WO (1) | WO2019076543A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021201993A1 (en) * | 2021-03-02 | 2022-09-08 | Robert Bosch Gesellschaft mit beschränkter Haftung | Stator for an electrical machine, electrical machine, method for producing a stator and use of an insulating paper |
| EP4322378A1 (en) * | 2022-08-11 | 2024-02-14 | Valeo eAutomotive Germany GmbH | Stator for an electric machine and electric machine for driving a vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063262A1 (en) * | 2010-12-16 | 2012-06-21 | Siemens Aktiengesellschaft | Dynamo-electric machine e.g. wind power generator has insulation section overlap portion provided at bottom of groove in laminated core of stator, in a state facing side of conductor of coils |
| CN102938592A (en) * | 2012-10-23 | 2013-02-20 | 陕西航空电气有限责任公司 | Thickened machine winding slot insulator and processing method thereof |
| JP2013143819A (en) * | 2012-01-10 | 2013-07-22 | Toyota Motor Corp | Method of manufacturing stator and stator |
| CN103580344A (en) * | 2012-08-10 | 2014-02-12 | 株式会社电装 | Stator of electric rotating machine |
| CN105324919A (en) * | 2013-07-12 | 2016-02-10 | 西门子公司 | Method for producing a dynamoelectric rotary machine, and dynamoelectric rotary machine |
| WO2017028993A1 (en) * | 2015-08-14 | 2017-02-23 | Robert Bosch Gmbh | Stator of an electric machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5515983U (en) * | 1978-07-17 | 1980-01-31 | ||
| US8384263B2 (en) * | 2008-02-14 | 2013-02-26 | Hitachi, Ltd. | Rotating electrical machine having a compact stator |
| JP5518129B2 (en) * | 2012-05-11 | 2014-06-11 | 日立オートモティブシステムズ株式会社 | Rotating electric machine and rotating electric machine stator |
-
2017
- 2017-10-16 DE DE102017218451.5A patent/DE102017218451A1/en active Pending
-
2018
- 2018-09-12 WO PCT/EP2018/074572 patent/WO2019076543A1/en active Application Filing
- 2018-09-12 CN CN201880067287.6A patent/CN111194515B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010063262A1 (en) * | 2010-12-16 | 2012-06-21 | Siemens Aktiengesellschaft | Dynamo-electric machine e.g. wind power generator has insulation section overlap portion provided at bottom of groove in laminated core of stator, in a state facing side of conductor of coils |
| JP2013143819A (en) * | 2012-01-10 | 2013-07-22 | Toyota Motor Corp | Method of manufacturing stator and stator |
| CN103580344A (en) * | 2012-08-10 | 2014-02-12 | 株式会社电装 | Stator of electric rotating machine |
| CN102938592A (en) * | 2012-10-23 | 2013-02-20 | 陕西航空电气有限责任公司 | Thickened machine winding slot insulator and processing method thereof |
| CN105324919A (en) * | 2013-07-12 | 2016-02-10 | 西门子公司 | Method for producing a dynamoelectric rotary machine, and dynamoelectric rotary machine |
| WO2017028993A1 (en) * | 2015-08-14 | 2017-02-23 | Robert Bosch Gmbh | Stator of an electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019076543A1 (en) | 2019-04-25 |
| CN111194515B (en) | 2022-08-30 |
| DE102017218451A1 (en) | 2019-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI758202B (en) | Shielded inductor | |
| KR101581483B1 (en) | Coil for an electric machine and method for producing a coil | |
| CN108028556A (en) | Electric rotating machine | |
| CN111194515B (en) | Stator and electric machine having a stator | |
| US20200212750A1 (en) | Motor stator | |
| CN104662779B (en) | Electric machinery | |
| JP6944332B2 (en) | Rotating machine | |
| CN107925295B (en) | Stator of electric machine | |
| JP6186235B2 (en) | Rotating electric machine | |
| CN212486231U (en) | Stator and motor | |
| WO2015017279A1 (en) | Insulation component for an electric machine and method of assembly | |
| CN107317405B (en) | Lamination stack for producing the stator and/or rotor of an electric motor and generator | |
| CN111384806B (en) | Motor stator | |
| JP2014112985A (en) | Dynamo-electric machine | |
| US7724120B2 (en) | Magnetic pole for magnetic levitation vehicles | |
| JP6339052B2 (en) | Resolver | |
| JP6660530B2 (en) | Electric motor and ceiling fan equipped with it | |
| US20230353002A1 (en) | Surface insulating material of a dynamoelectrical machine | |
| WO2016074928A1 (en) | Cooling ducts for transformers' winding | |
| CN114123593A (en) | Motor stator and motor | |
| CN113812067A (en) | Stator coil, stator and rotating electrical machine provided with same, and method for manufacturing stator coil | |
| US20160372991A1 (en) | Energy transmission device | |
| JP4665566B2 (en) | Rotating electric machine | |
| CN113574617B (en) | Static inductor | |
| US11611257B2 (en) | Method and stator for optimized slot base insulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |