WO2020099609A1 - Interconnection arrangement for an electrical machine - Google Patents
Interconnection arrangement for an electrical machine Download PDFInfo
- Publication number
- WO2020099609A1 WO2020099609A1 PCT/EP2019/081417 EP2019081417W WO2020099609A1 WO 2020099609 A1 WO2020099609 A1 WO 2020099609A1 EP 2019081417 W EP2019081417 W EP 2019081417W WO 2020099609 A1 WO2020099609 A1 WO 2020099609A1
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- WO
- WIPO (PCT)
- Prior art keywords
- connection
- switching
- connecting conductor
- connection pins
- pins
- 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.)
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Classifications
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- 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
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
- H02K15/0414—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils
- H02K15/0421—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines the windings consisting of separate elements, e.g. bars, segments or half coils and consisting of single conductors, e.g. hairpins
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/06—Embedding prefabricated windings in the machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/30—Manufacture of winding connections
- H02K15/33—Connecting winding sections; Forming leads; Connecting leads to terminals
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
- H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations
Definitions
- the present invention relates to a circuit arrangement for an electrical machine with a winding of a plurality of shaped bars, which pass through at least two grooves spaced in the circumferential direction and have contact points on one side of the electrical machine, which are connected to form the winding.
- Such windings are also referred to as hairpin windings or wave windings, only the term hairpin or flairpin windings being used in the following, which also includes wave windings and the like in the sense of the application.
- connection pins are each connected individually to the circuit.
- the object of the present invention is to provide a circuit which is quick and easy to produce and which provides a secure connection over the period of use of the electrical machine.
- a circuit for an electrical machine with a hairpin winding having a plurality of connection pins
- the circuit comprising a plurality of switching rings, each of which extends at least over a part of the circumference, with a plurality of switching rings Connection conductors are provided, and wherein each connection pin with a Switching ring can be electrically conductively connected via a connecting conductor, characterized in that a connecting conductor can be connected at least to two connecting pins.
- a hairpin winding is formed from several hairpins or shaped rods which have contact points at their ends on the winding head. At the contact points in pairs are electrically connected to each other in order to produce the coils of the hairpin winding from the hairpins.
- the contact points connected in pairs are referred to as hairpin ends and the respective individual contact points at the start and end of the respective coils are referred to as connection pins.
- the connection pins are connected in an electrically conductive manner in order to connect them to the power electronics for controlling the electrical machine.
- the coils of the type In order to be able to operate an electrical machine, the coils of the type must each be connected to a phase or a neutral conductor, which are generally controlled by power electronics.
- a circuit In order for the power electronics to be able to supply several coils or more precisely several connection pins with a common contact, a circuit is provided that includes switching rings. Each switching ring is connected to a phase of the power electronics or the neutral conductor. The connection pins are connected to the structure of the electrical machine in accordance with each of the switching ring in an electrically conductive manner, wherein several connection pins can be connected to the same switching ring.
- the switching ring each extend in the circumferential direction at least over a portion, so that the connection pins projecting from the hairpin winding can be connected to the corresponding switching ring.
- the partial area in the circumferential direction preferably comprises at least the angle between connection pins of the same phase.
- the switching ring and / or the carrier in which they are accommodated can also extend over the entire circumference.
- connection pins are electrically connected to the corresponding switching ring via a connecting conductor.
- a connecting conductor can be connected to at least two connection pins.
- a hairpin winding is usually designed with a plurality of partial windings connected in parallel or in series, which each have corresponding connection pins.
- the partial windings are preferably arranged in the electrical machine in such a way that connection pins under different partial windings, which are assigned to the same phase, are positioned adjacent to one another.
- connection pins under different partial windings which are assigned to the same phase, are positioned adjacent to one another.
- at least two adjacent connection pins are connected to a switching ring via a connecting conductor.
- the cross section of the connecting conductor can be enlarged, which is advantageous in terms of mechanical stability and also in terms of the transferable electrical power.
- connection pins with the connecting conductor have to be aligned with fewer components.
- Embodiments of a circuit are characterized in that a connecting conductor has a partial area which has a width in the circumferential direction in order to be able to be arranged between two adjacent connection pins.
- a connecting conductor has a partial area which has a width in the circumferential direction in order to be able to be arranged between two adjacent connection pins.
- at least a partial area of the connecting conductor is arranged in the circumferential direction or in the tangential direction between the adjacent connection pins.
- the width of the partial area therefore corresponds approximately to the clear width between the connecting pins, which corresponds to the width of the tooth dependent on the radius between two adjacent grooves in which the winding is provided.
- the width of the connection conductor can also be provided somewhat smaller than the clear width between the connection pins, whereby the positioning is simplified, but it must be ensured by an additional step that the connection pins are in contact with the connection conductor when joining.
- the width of the section of the connecting conductor arranged between the connection pins is therefore preferably in the range from Lw + b to Lw-b, where Lw represents the clear width between two adjacent connection pins and b the thickness of a connection pin in the tangential direction.
- a connecting conductor has a width in the circumferential direction which covers at least two adjacent connection pins.
- the connection conductor can contact the connection pins on the radially inner or outer side surface.
- the connecting conductor has at least a width which corresponds to the inside width Lw and twice a width b of a connection pin.
- the connecting conductor can also be made correspondingly wider.
- a protrusion of the connecting conductor in the tangential direction is also possible, the protrusion not being greater than the width of a connecting pin in order to enable insulation with respect to any other adjacent components.
- Embodiments of a circuit are characterized in that the connecting conductor is designed in a comb-like manner in order to contact a connecting pin (6) on two sides. If the connecting conductor is provided with a width that covers at least two adjacent connection pins, partial areas that extend between the connection pins can also be provided. These partial areas have a width in the tangential direction, which corresponds approximately to the clear width. Through the partial areas, the connection pins can be contacted on at least two sides by the connecting conductor, as a result of which the cross section of the connection is correspondingly enlarged.
- the partial areas have a varying width in the radial direction, the width at the end of the partial area facing away from the connecting conductor being smaller than the clear width between the connecting pins in order to facilitate positioning between the connecting pins.
- Interconnection according to embodiments are characterized in that at least some of the switching rings each have a power connection in order to connect the switching ring in an electrically conductive manner to power electronics. In order to achieve electrical contacting of the switching rings, these are connected to power electronics, and depending on the electrical arrangement of the coils, part of the switching rings can only connect connecting pins of different coils to one another without being directly connected to power electronics be. For the connection to the power electronics, a power connection is provided on the corresponding switching ring.
- the power connections serve as connection points for cables to the power electronics and are provided with corresponding plug, screw or clamp connections, whereby welded or soldered connections are also possible.
- Preferred embodiments of an interconnection are characterized in that the power connections are provided in a row with a parallel orientation.
- the power connections have a larger dimension than the switching ring in the direction of the neighboring switching rings, which is why they are arranged at different locations along the circumference.
- the power connections are arranged relatively adjacent to one another in a row.
- the power connections are arranged with a parallel orientation to one another, for example in the case of plug-in or screw connections to have the same direction of insertion or parallel threads.
- the end faces of the power connections are arranged on a common level, which in particular in conjunction with the other aforementioned embodiments simplifies the use of standardized plugs or housing passages.
- Interconnections in preferred embodiments are characterized in that the power connections are each electrically conductively connected to the switching ring via a conductor rail or via a cutout in cross section, the recess corresponding to the shape of the switching ring.
- the cross-sectional area of the power connections is the same or larger than that of the associated switching ring. Because of the several, in particular rectangular, switching rings arranged adjacent, the connection to the power connections is made from a narrow side.
- a cutout is preferably provided which corresponds to the shape of the switching ring in order to contact at least one of the broad sides of the switching ring in addition to a narrow side of the switching ring in order to enlarge the contact area.
- the recess can be on the edge be provided, whereby the switching ring can be contacted on two sides, or also within to contact the switching ring on three sides.
- a power connection can be made via a busbar which is connected to one side, preferably a narrow side, of the switching ring.
- a busbar which is connected to one side, preferably a narrow side, of the switching ring.
- the busbar is formed in one piece with the switching ring.
- the busbar can be shaped or shaped accordingly in order to position the connection point of the power connection accordingly to the installation space and largely independently of the position of the connection.
- Embodiments of a circuit are characterized in that the switching rings run coaxially or parallel to one another in the axial direction.
- the switching ring are arranged adjacent to one another, with isolating the material of a carrier being arranged between them.
- Interconnection are characterized according to embodiments in that the switching rings are ring-shaped, extending over the entire circumference.
- the switching ring thus have a shape of an annular disc or a sleeve. Due to this configuration, the switching ring with intervening insulation tion by the carrier as stacked in the axial direction ring disks or as coaxial sleeves can be arranged, whereby switching ring are provided with a sufficiently large wire cross section with a relatively small space.
- Another aspect of the invention is an electrical machine with a hairpin winding, which is characterized in that an interconnection according to one of the described embodiments is provided, and in that a connecting conductor is connected to at least two connecting pins. Adjacent connection pins of the same phase are connected to a corresponding switching ring of the phase via a connecting conductor.
- the cross section of the connecting conductor can be enlarged, which is advantageous in terms of mechanical stability and also in terms of the transferable electrical power.
- the connection pins with the connecting conductor must align fewer components with one another.
- a method for producing an electrical machine with a circuit is a further aspect of the invention, comprising providing the hairpin winding, positioning the circuit on the hairpin winding, at least two connecting pins with a connecting conductor of a switching ring get connected. As already stated, several connection pins are connected to the corresponding switching ring of the connection via a common connecting conductor.
- Methods according to embodiments are characterized in that an insulation unit is applied to the hairpin winding before the connection, the hairpin ends being positioned in the insulation unit and the connection pins being connected to the connection in an electrically conductive manner axially through or past the insulation unit.
- the insulation unit has through openings through which the connection pins are guided, or the connection pins are guided ra dial past the insulation unit or into recesses provided on the peripheral surface.
- Embodiments of a method are characterized in that a casting compound is applied before or after the connection is placed in order to isolate the hairpin ends.
- the winding is provided, which is in particular the winding of the stator of an electrical machine.
- An insulation unit is preferably positioned on the winding head of the hairpin winding in order to produce an alignment of the hairpin ends and the connection pins to the openings and the circuitry, and versions without an insulation unit are also possible.
- a sealing compound By applying a sealing compound, even insulation of the hair pin ends can be achieved.
- the potting compound can be introduced before the circuit is applied to provide an insulated winding head for the following assembly step.
- the casting compound can be introduced after the connection has been put on.
- this can advantageously be combined with a possibly existing which are insulated. This has the advantage that an additional connection between the circuitry and the insulating unit or flairpin winding takes place through a joint encapsulation and, at the same time, the circuitry, in particular the connection pins and the contact points, is isolated.
- Fig. 1 shows an embodiment of an interconnection.
- Fig. 2 shows part of the embodiment of FIG. 1 together with egg ner Flairpin winding.
- FIG 3 shows a further exemplary embodiment of an interconnection.
- Fig. 4 shows part of the embodiment of FIG. 3 together with egg ner Flairpin winding.
- the circuit arrangement comprises a plurality of switching rings (1), which are arranged largely coaxially with one another and each extend around part of the circumference.
- the switching rings (1) extend over the entire circumference and / or exemplary embodiments in which the switching rings (1) are designed as ring disks adjacent in the axial direction or ring disk segments.
- three switching rings (1) are each provided with a power connection (4) through which the switching rings (1) can each be connected to different phases of power electronics.
- the exemplary embodiment in FIG. 1 additionally comprises switching rings (1) which have no power connection (4) and, for example, for connecting different ones Serve coil strands of hairpin winding. Shown are two diametrically opposed sub-segments as additional switching rings (1) which are arranged on a circumferential radius. This enables, for example, a connection for a hairpin winding with two partial coils arranged in parallel. Depending on the design of the hairpin winding of the electrical machine, several corresponding additional switching rings (1) or only a single corresponding additional switching ring (1) can also be provided, or additional switching rings (1) without power connection (4) can also be provided. to be dispensed with.
- each connecting conductor (2) is provided on each switching ring (1) in order to connect the respective switching ring to connection pins (7), not shown in FIG. 1, of the hairpin winding.
- the connecting conductors (2) are connected to the upper narrow side of the rectangular switching rings (1) in the axial direction and change the orientation in the further course in the radial direction in order to make contact with the connecting pins (7) guided past the switching rings (1) enable.
- the connecting conductors (2) preferably end at the same height both in the axial and in the radial direction, as a result of which the connection to the connecting pins (7) is simplified.
- each connecting conductor (2) has a width that covers several — here three — connection pins (7).
- each connecting conductor (2) has at its front end partial areas (3) which have a smaller width and are spaced apart from one another in the tangential direction such that the partial areas (3) between adjacent connecting pins to be connected to the connecting conductor (2) (7) can be arranged.
- the connection pin (7) can be contacted on at least two sides of the connecting conductor (2), whereby the mechanical stability and the transferable electrical power can be improved.
- the connecting conductors are provided at the axially upper end and radially outward.
- the connecting conductors (2) can also, if necessary partially, according to be shaped.
- the connecting conductors (2) can be provided on the lower narrow side, facing the hairpin winding, which represents an end face, of the respective switching ring (1).
- switching rings (1) are each formed in the axial direction as adjacent ring disks or ring disk segments, the connecting line ter (2) preferably being formed from the inner or outer peripheral surfaces, which in turn surrounds the Represent the narrow sides of the shift rings (1), go out.
- the connecting conductor (2) can also be aligned in the radial direction, as in the example shown in FIG. 1, with coaxial switching rings (1), with embodiments from which the connecting conductor (1) is aligned in the axial direction.
- the switching rings (1) For connection to power electronics (not shown), at least some of the switching rings (1) each have a power connection (4).
- the power connections (4) shown schematically are provided in the axial direction. In the example shown, three switching rings (1) are each connected to a power connection (4). The three power connections are aligned with each other and in a row.
- the power connections (4) can also be arranged differently. In principle, however, an arrangement in close proximity and with a uniform height is preferred, since this simplifies the implementation by housing components or the use of plug connections.
- the power connections (4) preferably have cutouts (6) in order to be able to accommodate the switching ring (1), as a result of which a large contact area between the power connection (4) and switching ring (1) can be reached.
- the recess (6) can in particular come into contact with two or, in the case of central recesses (6), three sides of the recess (6).
- the outer switching ring (1) has no power connection (4) and is divided into two separate circular ring segments, the power connections (4) of the other switching rings (1) in one Area between the circular ring segments are arranged.
- the power connections (4) of the two middle switching rings (1) are each connected to the respective switching ring (1) via a recess (6) provided on the side of the power connection (4).
- the recesses (6) are provided opposite one another, that is to say for the radially outer side of the middle shift rings (1) on the radially inner side and on the radially outer side of the radially inner side of the middle shift rings (1).
- the middle switching rings (1) can be designed in a circular shape with a constant diameter and at the same time a sufficiently large contact area can be provided for the connection to the power connections (4).
- the radially inner switching ring (1) in Fig. 1 at least in the area of the power connection (4) of the adjacent switching ring (1) has an inwardly deviating shape in order to ensure sufficient distance to the power connection (4) of the adjacent switching ring (1) .
- the radially inner switching ring (1) is connected to the power connection (4) by a busbar (5).
- the busbar (5) here represents a self-supporting flat conductor which is electrically connected at one end to the switching ring (1) and at the other end to a power connection (4).
- the busbar (5) is shaped such that the power connection (4) is positioned corresponding to the other power connections (4).
- the busbar (5) in FIG. 1 has an angled shape, which is connected with one leg to the radially inner circumferential surface of the switching ring (1), and the other leg extends axially spaced over the further switching rings (1), to position the power connections (4) in a row.
- FIG. 2 shows a section of an exemplary embodiment with connecting conductors (2) according to FIG. 1 together with a corresponding section with connection pins (7) of the Flairpin winding.
- the connecting conductors (2) are arranged axially upwards and radially outwards.
- the connection pins (7) of the Flairpin winding are passed radially outside the switching rings (1).
- three adjacent connection pins (7) are assigned to the same phase.
- connection pins (7) are connected to a single connec tion conductor (2), a portion (3) being arranged between two of the three connection pins (7).
- connection pins (7) on at least two sides of the rectangular cross section are contacted by the connecting conductor (2) and connected to the latter.
- FIG. 3 The further exemplary embodiment of an interconnection shown in FIG. 3 is constructed analogously to that in FIG. 1, which is why reference is made to the above description.
- the connecting conductors (2) are designed differently.
- a connecting conductor (2) is connected to two connection pins (7).
- Flierzu the connecting conductor (2) has a front portion (3), which is arranged between two connection pins (7).
- the kauslei ter (2) maintains the cross section of the portion (3) in the further course.
- the cross section of the connecting conductor (2) can be enlarged, in particular in proximity to the switching ring (1).
- the partial area (3) is arranged in the axial direction in FIG. 3 and runs largely parallel to the connection pins (7). Due to the parallel course, the contact area with the connection pin (7) can be enlarged. Since the connection pin (7) is only contacted on one side by the partial area (3), the positioning is somewhat difficult, but some space can be saved.
- FIG. 4 represents an enlarged section of an interconnection with a flairpin winding according to FIG. 3 analogously to FIG. 2.
- the sections (3) are each arranged between two connection pins (7) and connected to them.
- the three connection pins (7) of each phase are connected to the switching ring (1) by two connecting conductors (2).
- the middle connection pin (7) is contacted on two sides by a connecting conductor (2), the two outer ones being contacted only by one connecting conductor (2).
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Abstract
Description
Verschaltunqsanordnunq für eine elektrische Maschine Circuit arrangement for an electrical machine
Die vorliegende Erfindung betrifft eine Verschaltungsanordnung für eine elektrische Maschine mit einer Wicklung aus mehrere Formstäben, die zumindest zwei in Um fangsrichtung beabstandete Nuten durchlaufen und auf einer Seite der elektrischen Maschine Kontaktstellen aufweisen, welche zur Bildung der Wicklung miteinander verbunden werden. Derartige Wicklungen werden auch als Hairpin-Wicklung oder Wellenwicklung bezeichnet, wobei im Folgenden nur die Bezeichnung Hairpin bezie hungsweise Flairpin-Wicklung verwendet wird, wobei hiermit im Sinne der Anmeldung auch Wellenwicklungen und dergleichen umfasst sind. The present invention relates to a circuit arrangement for an electrical machine with a winding of a plurality of shaped bars, which pass through at least two grooves spaced in the circumferential direction and have contact points on one side of the electrical machine, which are connected to form the winding. Such windings are also referred to as hairpin windings or wave windings, only the term hairpin or flairpin windings being used in the following, which also includes wave windings and the like in the sense of the application.
Im Stand der Technik ist bekannt Wicklungen von elektrischen Maschinen, insbeson dere des Stators, am Wickelkopf die Mehrzahl an Anschlusspins entsprechend der für die Spulen der Wicklung benötigten Polung über entsprechende Leiter zu verbin den. Die Anschlusspins werden im Stand der Technik jeweils einzeln mit der Ver schaltung verbunden. In the prior art is known windings of electrical machines, in particular the stator, to connect the plurality of connection pins on the winding end corresponding to the polarity required for the coils of the winding via corresponding conductors. In the prior art, the connection pins are each connected individually to the circuit.
Probleme des Standes der Technik liegen unter anderem in dem begrenzten Lei tungsquerschnitt der Verbindung mit der Verschaltung, welche bei immer höher wer denden Leistungen der E-Maschine ein zu berücksichtigender Faktor werden, als auch der Fertigungsaufwand für die jeweiligen Verbindungen. Problems of the prior art include the limited line cross-section of the connection to the circuit, which becomes a factor to be taken into account when the power of the electric machine becomes ever higher, and also the production outlay for the respective connections.
Aufgabe der vorliegenden Erfindung ist die Bereitstellung einer Verschaltung, die ein fach und schnell herzustellen ist sowie eine sichere Verbindung über den Nutzungs zeitraum der elektrischen Maschine bietet. The object of the present invention is to provide a circuit which is quick and easy to produce and which provides a secure connection over the period of use of the electrical machine.
Gelöst wird die Aufgabe durch eine Verschaltung und einer elektrischen Maschine sowie einem Verfahren zu deren Herstellung gemäß den unabhängigen Ansprüchen. The object is achieved by a circuit and an electrical machine and a method for their production in accordance with the independent claims.
Erfindungsgemäß ist eine Verschaltung für eine elektrische Maschine mit Hairpin- Wicklung, wobei die Hairpin-Wicklung eine Mehrzahl von Anschlusspins aufweist, wobei die Verschaltung eine Mehrzahl von Schaltringen umfasst, welche sich jeweils zumindest über einen Teil des Umfangs erstrecken, wobei an den Schaltringen meh rere Verbindungsleiter vorgesehen sind, und wobei jeder Anschlusspin mit einem Schaltring über einen Verbindungsleiter elektrisch leitend verbindbar ist, dadurch ge kennzeichnet, dass ein Verbindungsleiter zumindest mit zwei Anschlusspins verbind bar ist. According to the invention is a circuit for an electrical machine with a hairpin winding, the hairpin winding having a plurality of connection pins, the circuit comprising a plurality of switching rings, each of which extends at least over a part of the circumference, with a plurality of switching rings Connection conductors are provided, and wherein each connection pin with a Switching ring can be electrically conductively connected via a connecting conductor, characterized in that a connecting conductor can be connected at least to two connecting pins.
Eine Hairpin-Wicklung wird aus mehreren Hairpins beziehungsweise Formstäben gebildet, die an ihren Enden am Wickelkopf Kontaktstellen aufweisen. An den Kon taktstellen werden jeweils paarweise miteinander elektrisch leitend verbunden um aus den Hairpins die Spulen der Hairpin-Wicklung herzustellen. Die paarweise mitei nander verbundenen Kontaktstellen werden als Hairpin-Enden bezeichnet und die jeweiligen einzelnen Kontaktstellen am Start und Ende der jeweiligen Spulen werden als Anschlusspins bezeichnet. Die Anschlusspins werden mit einer Verschaltung elektrisch leitend verbunden, um die mit der Leistungselektronik zu Steuerung der elektrischen Maschine zu verbinden. A hairpin winding is formed from several hairpins or shaped rods which have contact points at their ends on the winding head. At the contact points in pairs are electrically connected to each other in order to produce the coils of the hairpin winding from the hairpins. The contact points connected in pairs are referred to as hairpin ends and the respective individual contact points at the start and end of the respective coils are referred to as connection pins. The connection pins are connected in an electrically conductive manner in order to connect them to the power electronics for controlling the electrical machine.
Um eine elektrische Maschine betreiben zu können, müssen die Spulen der Bauart entsprechend jeweils mit einer Phase oder einem Neutralleiter verbunden werden, welche in der Regel über einer Leistungselektronik gesteuert werden. Damit die Leis tungselektronik mit einem gemeinsamen Kontakt gegebenenfalls mehrere Spulen beziehungsweise genauer mehrere Anschlusspins versorgen kann, ist eine Verschal tung vorgesehen, die Schaltringe umfasst. Jeder Schaltring ist mit einer Phase der Leistungselektronik oder dem Neutralleiter verbunden. Die Anschlusspins sind dem Aufbau der elektrischen Maschine entsprechend jeweils mit einem der Schaltring elektrisch leitend verbunden, wobei mehrere Anschlusspins mit dem gleichen Schalt ring verbunden sein können. In order to be able to operate an electrical machine, the coils of the type must each be connected to a phase or a neutral conductor, which are generally controlled by power electronics. In order for the power electronics to be able to supply several coils or more precisely several connection pins with a common contact, a circuit is provided that includes switching rings. Each switching ring is connected to a phase of the power electronics or the neutral conductor. The connection pins are connected to the structure of the electrical machine in accordance with each of the switching ring in an electrically conductive manner, wherein several connection pins can be connected to the same switching ring.
Die Schaltring erstrecken sich jeweils in Umfangsrichtung zumindest über einen Teil bereich, damit von der Hairpin-Wicklung vorstehende Anschlusspins mit dem ent sprechenden Schaltring verbunden werden können. The switching ring each extend in the circumferential direction at least over a portion, so that the connection pins projecting from the hairpin winding can be connected to the corresponding switching ring.
Der Teilbereich in Umfangsrichtung umfasst hierbei vorzugsweise mindestens den Winkel zwischen Anschlusspins gleicher Phase. Zur Erhöhung der Stabilität und für eine bessere Handhabung können sich die Schaltring und/oder der Träger in dem sie aufgenommen sind, auch über den kompletten Umfang erstrecken. The partial area in the circumferential direction preferably comprises at least the angle between connection pins of the same phase. To increase stability and for better handling, the switching ring and / or the carrier in which they are accommodated can also extend over the entire circumference.
Die Anschlusspins werden mit dem jeweils entsprechenden Schaltring über einen Verbindungsleiter elektrisch leitend verbunden. Hierbei ist ein Verbindungsleiter zu mindest mit zwei Anschlusspins verbindbar. Eine Hairpin-Wicklung ist in der Regel mit mehreren parallel oder seriell verschalteten Teilwicklungen ausgebildet, welche entsprechend jeweils Anschlusspins aufweisen. Die Teilwicklungen werden vorzugs weise derart in der elektrischen Maschine angeordnet, dass Anschlusspins unter schiedlicher Teilwicklungen, welche einer gleichen Phase zugeordnet sind, benach bart zueinander positioniert sind. Anstatt die Anschlusspins einzeln mit dem Schalt ring zu verbinden, werden zumindest zwei benachbarte Anschlusspins über einen Verbindungsleiter mit einem Schaltring verbunden. Hierdurch kann der Querschnitt des Verbindungsleiters vergrößert werden, was hinsichtlich der mechanischen Stabi lität als auch hinsichtlich der übertragbaren elektrischen Leistungen vorteilhaft ist.The connection pins are electrically connected to the corresponding switching ring via a connecting conductor. Here, a connecting conductor can be connected to at least two connection pins. A hairpin winding is usually designed with a plurality of partial windings connected in parallel or in series, which each have corresponding connection pins. The partial windings are preferably arranged in the electrical machine in such a way that connection pins under different partial windings, which are assigned to the same phase, are positioned adjacent to one another. Instead of individually connecting the connection pins to the switching ring, at least two adjacent connection pins are connected to a switching ring via a connecting conductor. As a result, the cross section of the connecting conductor can be enlarged, which is advantageous in terms of mechanical stability and also in terms of the transferable electrical power.
Des Weiteren müssen vor dem Fügen, zum Beispiel Verschweißen, der Anschluss pins mit dem Verbindungsleiter weniger Bauteile zueinander ausgerichtet werden. Furthermore, before joining, for example welding, the connection pins with the connecting conductor have to be aligned with fewer components.
Ausführungsformen einer Verschaltung sind dadurch gekennzeichnet, dass ein Ver bindungsleiter einen Teilbereich aufweist, welcher in Umfangsrichtung eine Breite aufweist, um zwischen zwei benachbarten Anschlusspins anordenbar zu sein. Um zumindest zwei Anschlusspins kontaktieren zu können, wird zumindest ein Teilbe reich des Verbindungsleiters in Umfangsrichtung beziehungsweise in tangentialer Richtung zwischen den benachbarten Anschlusspin angeordnet. Die Breite des Teil bereichs entspricht daher etwa der lichten Weite zwischen den Anschlusspins, wel che der Breite des vom Radius abhängigen Zahns zwischen zwei benachbarten Nu ten, in denen die Wicklung vorgesehen ist, entspricht. Die Breite des Verbindungslei ters kann hierbei auch etwas kleiner als die lichte Weite zwischen den Anschlusspins vorgesehen sein, wodurch die Positionierung vereinfacht wird, jedoch durch einen zusätzlichen Schritt sichergestellt werden muss, dass die Anschlusspins beim Fügen am Verbindungsleiter anliegen. Durch eine Breite des Verbindungsleiters, welche größer als die lichte Weite zwischen den Anschlusspins ist, ist ein Anliegen beim Fü gen sichergestellt, jedoch wird die Positionierung des Teilbereichs zwischen den An schlusspins erschwert. Die Breite des zwischen den Anschlusspins angeordneten Teilbereichs des Verbindungsleiters liegt somit vorzugsweise im Bereich vom Lw+b bis Lw-b, wobei Lw die lichte Weite zwischen zwei benachbarten Anschlusspins und b die Dicke eines Anschlusspins in tangentialer Richtung darstellt. Verschaltungen gemäß Ausführungsformen sind dadurch gekennzeichnet, dass ein Verbindungsleiter in Umfangsrichtung eine Breite aufweist, welche mindestens zwei benachbarte Anschlusspins überdeckt. Alternativ oder kumulativ kann der Verbin dungsleiter die Anschlusspins an der radial inneren oder äußeren Seitenfläche kon taktieren. Hierzu weist der Verbindungsleiter mindestens eine Breite auf, welche der lichten Weite Lw und dem doppelten einer Breite b eines Anschlusspins entspricht. Um mehr als zwei Anschlusspins zu kontaktieren, kann der Verbindungsleiter auch entsprechend breiter ausgeführt sein. Auch ein Überstand des Verbindungsleiters in tangentialer Richtung ist möglich, wobei der Überstand nicht größer als eine Breite eines Anschlusspins sein sollte, um hinsichtlich eventueller weiterer benachbarter Bauteile eine Isolierung zu ermöglichen. Embodiments of a circuit are characterized in that a connecting conductor has a partial area which has a width in the circumferential direction in order to be able to be arranged between two adjacent connection pins. In order to be able to contact at least two connection pins, at least a partial area of the connecting conductor is arranged in the circumferential direction or in the tangential direction between the adjacent connection pins. The width of the partial area therefore corresponds approximately to the clear width between the connecting pins, which corresponds to the width of the tooth dependent on the radius between two adjacent grooves in which the winding is provided. The width of the connection conductor can also be provided somewhat smaller than the clear width between the connection pins, whereby the positioning is simplified, but it must be ensured by an additional step that the connection pins are in contact with the connection conductor when joining. A width of the connecting conductor, which is larger than the clear width between the connection pins, ensures that the joining is correct, but the positioning of the partial area between the connection pins is made more difficult. The width of the section of the connecting conductor arranged between the connection pins is therefore preferably in the range from Lw + b to Lw-b, where Lw represents the clear width between two adjacent connection pins and b the thickness of a connection pin in the tangential direction. Interconnections in accordance with embodiments are characterized in that a connecting conductor has a width in the circumferential direction which covers at least two adjacent connection pins. Alternatively or cumulatively, the connection conductor can contact the connection pins on the radially inner or outer side surface. For this purpose, the connecting conductor has at least a width which corresponds to the inside width Lw and twice a width b of a connection pin. In order to contact more than two connection pins, the connecting conductor can also be made correspondingly wider. A protrusion of the connecting conductor in the tangential direction is also possible, the protrusion not being greater than the width of a connecting pin in order to enable insulation with respect to any other adjacent components.
Ausführungsformen einer Verschaltung sind dadurch gekennzeichnet, dass der Ver bindungsleiter kammartig ausgebildet ist, um jeweils einen Anschlusspin (6) an zwei Seiten zu kontaktieren. Wird der Verbindungsleiter mit einer Breite, welche zumindest zwei benachbarte Anschlusspins überdeckt, vorgesehen, können ebenfalls Teilberei che, welche sich zwischen die Anschlusspins erstrecken, vorgesehen sein. Diese Teilbereiche weisen ein Breite in tangentialer Richtung auf, welche etwa der lichten Weite entspricht. Durch die Teilbereiche können die Anschlusspins an zumindest zwei Seiten durch den Verbindungsleiter kontaktiert werden, wodurch sich der Quer schnitt der Verbindung entsprechend vergrößert. Embodiments of a circuit are characterized in that the connecting conductor is designed in a comb-like manner in order to contact a connecting pin (6) on two sides. If the connecting conductor is provided with a width that covers at least two adjacent connection pins, partial areas that extend between the connection pins can also be provided. These partial areas have a width in the tangential direction, which corresponds approximately to the clear width. Through the partial areas, the connection pins can be contacted on at least two sides by the connecting conductor, as a result of which the cross section of the connection is correspondingly enlarged.
Bei bevorzugten Ausführungsformen weisen die Teilbereiche eine sich verändernde Breite in radialer Richtung auf, wobei die Breite am dem Verbindungsleiter abge wandten Ende des Teilbereichs kleiner als die lichte Weite zwischen den Anschluss pins ist, um ein Positionieren zwischen den Anschlusspins zu erleichtern. In preferred embodiments, the partial areas have a varying width in the radial direction, the width at the end of the partial area facing away from the connecting conductor being smaller than the clear width between the connecting pins in order to facilitate positioning between the connecting pins.
Verschaltung gemäß Ausführungsformen sind dadurch gekennzeichnet, dass zumin dest ein Teil der Schaltringe jeweils einen Leistungsanschluss aufweisen, um den Schaltring elektrisch leitend mit einer Leistungselektronik zu verbinden. Um eine elektrischen Kontaktierung der Schaltringe zu erreichen, sind diese mit einer Leis tungselektronik verbunden, wobei abhängig von der elektrischen Anordnung der Spulen auch ein Teil der Schaltringe nur Anschlusspins unterschiedlicher Spulen miteinander verbinden kann, ohne direkt mit einer Leistungselektronik verbunden zu sein. Zur Anbindung an die Leistungselektronik ist an den entsprechenden Schaltrin gen jeweils ein Leistungsanschluss vorgesehen. Die Leistungsanschlüsse dienen als Anbindungspunkte für Leitungen zur Leistungselektronik und sind mit entsprechen den Steck-, Schraub- oder Klemmverbindungen vorgesehen, wobei auch Schweiß oder Lötverbindungen möglich sind. Interconnection according to embodiments are characterized in that at least some of the switching rings each have a power connection in order to connect the switching ring in an electrically conductive manner to power electronics. In order to achieve electrical contacting of the switching rings, these are connected to power electronics, and depending on the electrical arrangement of the coils, part of the switching rings can only connect connecting pins of different coils to one another without being directly connected to power electronics be. For the connection to the power electronics, a power connection is provided on the corresponding switching ring. The power connections serve as connection points for cables to the power electronics and are provided with corresponding plug, screw or clamp connections, whereby welded or soldered connections are also possible.
Bevorzugte Ausführungsformen einer Verschaltung sind dadurch gekennzeichnet, dass die Leistungsanschlüsse in einer Reihe mit einer parallelen Ausrichtung vorge sehen sind. Um die Anbindungspunkte bereit zu stellen, weisen die Leistungsan schlüsse eine im Vergleich zum Schaltring größere Abmessung in Richtung der be nachbarten Schaltringe auf, weshalb diese an unterschiedlichen Stellen entlang des Umfangs angeordnet sind. Es ist jedoch bevorzugt, dass die Leistungsanschlüsse relativ benachbart in einer Reihe zueinander angeordnet sind. Es ist ebenfalls bevor zugt, dass die Leistungsanschlüsse mit einer parallelen Ausrichtung zueinander an geordnet sind, um beispielsweise bei Steck- oder Schraubverbindungen eine gleiche Einsteckrichtung beziehungsweise parallele Gewinde aufzuweisen. Weiter bevorzugt ist, dass die Stirnseiten der Leistungsanschlüsse auf einer gemeinsamen Ebene an geordnet sind, wodurch insbesondere in Verbindung mit den anderen vorgenannten Ausführungsformen, die Verwendung von standardisierten Steckern oder Gehäuse durchgängen vereinfacht wird. Preferred embodiments of an interconnection are characterized in that the power connections are provided in a row with a parallel orientation. In order to provide the connection points, the power connections have a larger dimension than the switching ring in the direction of the neighboring switching rings, which is why they are arranged at different locations along the circumference. However, it is preferred that the power connections are arranged relatively adjacent to one another in a row. It is also preferred that the power connections are arranged with a parallel orientation to one another, for example in the case of plug-in or screw connections to have the same direction of insertion or parallel threads. It is further preferred that the end faces of the power connections are arranged on a common level, which in particular in conjunction with the other aforementioned embodiments simplifies the use of standardized plugs or housing passages.
Verschaltungen in bevorzugten Ausführungsformen sind dadurch gekennzeichnet, dass die Leistungsanschlüsse jeweils über eine Stromschiene oder über eine Aus sparung im Querschnitt, wobei die Aussparung der Form des Schaltrings entspricht, mit dem Schaltring elektrisch leitend verbunden sind. Die Querschnittsfläche der Leistungsanschlüsse ist gegenüber der des zugehörigen Schaltrings gleich oder grö ßer. Aufgrund der mehreren, benachbart angeordneten, insbesondere rechteckigen, Schaltringe erfolgt die Verbindung mit den Leistungsanschlüssen von einer Schmal seite her. Im Querschnitt eines Leistungsanschlusses ist vorzugsweise eine Ausspa rung vorgesehen, welcher der Form des Schaltrings entspricht, um neben einer Schmalseite des Schaltrings auch zumindest eine der Breitseiten des Schaltrings zu kontaktieren, um die Kontaktfläche zu vergrößern. Die Aussparung kann am Rand vorgesehen sein, wodurch der Schaltring an zwei Seiten kontaktiert werden kann, oder auch innerhalb, um den Schaltring auf drei Seiten zu kontaktieren. Interconnections in preferred embodiments are characterized in that the power connections are each electrically conductively connected to the switching ring via a conductor rail or via a cutout in cross section, the recess corresponding to the shape of the switching ring. The cross-sectional area of the power connections is the same or larger than that of the associated switching ring. Because of the several, in particular rectangular, switching rings arranged adjacent, the connection to the power connections is made from a narrow side. In the cross section of a power connection, a cutout is preferably provided which corresponds to the shape of the switching ring in order to contact at least one of the broad sides of the switching ring in addition to a narrow side of the switching ring in order to enlarge the contact area. The recess can be on the edge be provided, whereby the switching ring can be contacted on two sides, or also within to contact the switching ring on three sides.
Alternativ kann ein Leistungsanschluss über eine Stromschiene erfolgen, welche an einer Seite, vorzugsweise einer Schmalseite, des Schaltrings angebunden ist. Be sonders bevorzugt ist eine Ausbildung, bei der die Stromschiene einteilig mit dem Schaltring ausgebildet ist. Die Stromschiene kann entsprecht geformt beziehungs weise umgeformt sein, um den Anbindungspunkt des Leistungsanschlusses entspre chend den Bauraum und weitgehend unabhängig von der Position der Verschaltung zu positionieren. Alternatively, a power connection can be made via a busbar which is connected to one side, preferably a narrow side, of the switching ring. Be particularly preferred is an embodiment in which the busbar is formed in one piece with the switching ring. The busbar can be shaped or shaped accordingly in order to position the connection point of the power connection accordingly to the installation space and largely independently of the position of the connection.
Ausführungsformen einer Verschaltung sind dadurch gekennzeichnet, dass die Schaltringe koaxial oder in axialer Richtung parallel zueinander verlaufen. Die Schalt ring sind benachbart zueinander angeordnet, wobei zwischen ihnen noch isolieren des Material eines Trägers angeordnet ist. Embodiments of a circuit are characterized in that the switching rings run coaxially or parallel to one another in the axial direction. The switching ring are arranged adjacent to one another, with isolating the material of a carrier being arranged between them.
Verschaltung sind gemäß Ausführungsformen dadurch gekennzeichnet, dass die Schaltringe ringförmig, sich über den gesamten Umfang erstreckend, ausgebildet sind. Die Schaltring weisen somit eine Form einer Ringscheibe oder einer Hülse auf. Aufgrund dieser Ausgestaltung können die Schaltring mit dazwischenliegender Isolie rung durch den Träger als in axialer Richtung gestapelt Ringscheiben oder als koaxi ale Hülsen angeordnet werden, wodurch Schaltring mit einem ausreichend großen Leitungsquerschnitt bei relativ geringem Bauraum bereitgestellt werden. Interconnection are characterized according to embodiments in that the switching rings are ring-shaped, extending over the entire circumference. The switching ring thus have a shape of an annular disc or a sleeve. Due to this configuration, the switching ring with intervening insulation tion by the carrier as stacked in the axial direction ring disks or as coaxial sleeves can be arranged, whereby switching ring are provided with a sufficiently large wire cross section with a relatively small space.
Ein weiterer Aspekt der Erfindung ist eine elektrische Maschine mit einer Hairpin- Wicklung, welche dadurch gekennzeichnet, dass eine Verschaltung gemäß einer der beschriebenen Ausführungsformen vorgesehen ist, und dass ein Verbindungsleiter mit zumindest zwei Anschlusspins verbunden ist. Benachbarte Anschlusspins einer gleichen Phase sind über einen Verbindungsleiter mit einem entsprechenden Schalt ring der Phase verbunden. Hierdurch kann der Querschnitt des Verbindungsleiters vergrößert werden, was hinsichtlich der mechanischen Stabilität als auch hinsichtlich der übertragbaren elektrischen Leistungen vorteilhaft ist. Des Weiteren müssen vor dem Fügen, zum Beispiel Verschweißen, der Anschlusspins mit dem Verbindungslei ter weniger Bauteile zueinander ausgerichtet werden. Ein Verfahren zur Herstellung einer elektrischen Maschine mit einer Verschaltung, wie jeweils beschrieben, ist ein weiterer Aspekt der Erfindung, umfassend ein Bereit stellen der Hairpin-Wicklung, ein Positionieren der Verschaltung auf der Hairpin- Wicklung, wobei zumindest zwei Anschlusspins mit einem Verbindungsleiter eines Schaltrings verbunden werden. Wie bereits ausgeführt, werden mehrere Anschluss pins über einen gemeinsamen Verbindungsleiter mit dem entsprechenden Schaltring der Verschaltung verbunden. Another aspect of the invention is an electrical machine with a hairpin winding, which is characterized in that an interconnection according to one of the described embodiments is provided, and in that a connecting conductor is connected to at least two connecting pins. Adjacent connection pins of the same phase are connected to a corresponding switching ring of the phase via a connecting conductor. As a result, the cross section of the connecting conductor can be enlarged, which is advantageous in terms of mechanical stability and also in terms of the transferable electrical power. Furthermore, prior to joining, for example welding, the connection pins with the connecting conductor must align fewer components with one another. A method for producing an electrical machine with a circuit, as described in each case, is a further aspect of the invention, comprising providing the hairpin winding, positioning the circuit on the hairpin winding, at least two connecting pins with a connecting conductor of a switching ring get connected. As already stated, several connection pins are connected to the corresponding switching ring of the connection via a common connecting conductor.
Verfahren gemäß Ausführungsformen sind dadurch gekennzeichnet, dass vor der Verschaltung eine Isoliereinheit auf der Hairpin-Wicklung aufgebracht wird, wobei die Hairpin-Enden in der Isoliereinheit positioniert werden und die Anschlusspins axial durch oder an der Isoliereinheit vorbei mit der Verschaltung elektrisch leitend ver bunden werden. Um eine Verbindung zwischen der Verschaltung und den An schlusspins zu ermöglichen, weist die Isoliereinheit durchgängige Öffnungen auf, durch welche die Anschlusspins geführt werden, oder die Anschlusspins werden ra dial an der Isoliereinheit beziehungsweise in an der Umfangsfläche vorgesehenen Aussparungen vorbeigeführt. Methods according to embodiments are characterized in that an insulation unit is applied to the hairpin winding before the connection, the hairpin ends being positioned in the insulation unit and the connection pins being connected to the connection in an electrically conductive manner axially through or past the insulation unit. In order to enable a connection between the circuit and the connection pins, the insulation unit has through openings through which the connection pins are guided, or the connection pins are guided ra dial past the insulation unit or into recesses provided on the peripheral surface.
Ausführungsformen eines Verfahrens sind dadurch gekennzeichnet, dass eine Ver gussmasse vor oder nach dem Aufsetzen der Verschaltung aufgebracht wird, um die Hairpin-Enden zu isolieren. Embodiments of a method are characterized in that a casting compound is applied before or after the connection is placed in order to isolate the hairpin ends.
Zunächst wird die Wicklung bereitgestellt, wobei es sich insbesondere um die Wick lung des Stators einer elektrischen Maschine handelt. Auf den Wicklungskopf der Hairpin-Wicklung wird vorzugsweise eine Isoliereinheit positioniert, um eine Ausrich tung der Hairpin-Enden sowie den Anschlusspins zu den Öffnungen und der Ver schaltung herzustellen, wobei auch Ausführungen ohne Isoliereinheit möglich sind. Durch Aufbringen einer Vergussmasse kann eine gleichmäßige Isolierung der Hair pin-Enden erreicht werden. Die Vergussmasse kann vor dem Aufbringen der Ver schaltung eingebracht werden, um einen isolierten Wicklungskopf für den folgenden Montageschritt bereitzustellen. First, the winding is provided, which is in particular the winding of the stator of an electrical machine. An insulation unit is preferably positioned on the winding head of the hairpin winding in order to produce an alignment of the hairpin ends and the connection pins to the openings and the circuitry, and versions without an insulation unit are also possible. By applying a sealing compound, even insulation of the hair pin ends can be achieved. The potting compound can be introduced before the circuit is applied to provide an insulated winding head for the following assembly step.
Alternativ kann das Einbringen der Vergussmasse nach dem Aufsetzen der Verschal tung vorgenommen werden. Durch einen Verguss nach dem Aufsetzen der Verschal tung kann diese in vorteilhafter Weise zusammen mit einer gegebenenfalls vorhan- denen Isoliereinheit vergossen werden. Dies weist den Vorteil auf, dass durch einen gemeinsamen Verguss eine zusätzliche Verbindung zwischen Verschaltung und Iso liereinheit beziehungsweise Flairpin-Wicklung erfolgt und gleichzeitig eine Isolierung der Verschaltung, insbesondere der Anschlusspins und der Kontaktstellen, erzeugt wird. Alternatively, the casting compound can be introduced after the connection has been put on. By potting after placing the circuit board, this can advantageously be combined with a possibly existing which are insulated. This has the advantage that an additional connection between the circuitry and the insulating unit or flairpin winding takes place through a joint encapsulation and, at the same time, the circuitry, in particular the connection pins and the contact points, is isolated.
Im Folgenden wird die Erfindung anhand von Figuren näher erläutert. Gleiche oder ähnliche Bauteile werden mit einheitlichen Bezugszeichen bezeichnet. Die Figuren zeigen im Einzelnen: The invention is explained in more detail below with reference to figures. The same or similar components are identified with the same reference numerals. The figures show in detail:
Fig. 1 zeigt ein Ausführungsbeispiel einer Verschaltung. Fig. 1 shows an embodiment of an interconnection.
Fig. 2 zeigt einen Teil des Ausführungsbeispiels gemäß Fig. 1 zusammen mit ei ner Flairpin-Wicklung. Fig. 2 shows part of the embodiment of FIG. 1 together with egg ner Flairpin winding.
Fig. 3 zeigt ein weiteres Ausführungsbeispiel einer Verschaltung. 3 shows a further exemplary embodiment of an interconnection.
Fig. 4 zeigt einen Teil des Ausführungsbeispiels gemäß Fig. 3 zusammen mit ei ner Flairpin-Wicklung. Fig. 4 shows part of the embodiment of FIG. 3 together with egg ner Flairpin winding.
In Fig. 1 ist ein Ausführungsbeispiel einer Verschaltungsanordnung gezeigt. Die Ver schaltungsanordnung umfasst mehrere Schaltringe (1 ), welche weitgehend koaxial zueinander angeordnet sind und sich jeweils um einen Teil des Umfangs erstrecken. Alternativ sind auch Ausführungsbeispiel möglich, bei denen sich die Schaltringe (1 ) über den kompletten Umfang erstrecken und/oder Ausführungsbeispiele, bei denen die Schaltringe (1 ) als in axialer Richtung benachbarte Ringscheiben beziehungswei se Ringscheibensegmente ausgeführt sind. Im gezeigten Beispiel sind drei Schaltrin ge (1) jeweils mit einem Leistungsanschluss (4) versehen, durch welche die Schalt ringe (1 ) jeweils entsprechend mit unterschiedlichen Phasen einer Leistungselektro nik verbindbar sind. An exemplary embodiment of an interconnection arrangement is shown in FIG. The circuit arrangement comprises a plurality of switching rings (1), which are arranged largely coaxially with one another and each extend around part of the circumference. Alternatively, exemplary embodiments are also possible in which the switching rings (1) extend over the entire circumference and / or exemplary embodiments in which the switching rings (1) are designed as ring disks adjacent in the axial direction or ring disk segments. In the example shown, three switching rings (1) are each provided with a power connection (4) through which the switching rings (1) can each be connected to different phases of power electronics.
Das Ausführungsbeispiel in Fig. 1 umfasst zusätzlich Schaltringe (1 ), welche keinen Leistungsanschluss (4) aufweisen und beispielsweise zum Verbinden verschiedener Spulensträngen der Hairpin-Wicklung dienen. Dargestellt sind zwei diametral gegen überliegende Teilsegmente als zusätzliche Schaltringe (1 ), welche auf einem glei chen Umfangsradius angeordnet sind. Hierdurch wird zum Beispiel eine Verschal tung für eine Hairpin-Wicklung mit zwei parallel angeordneten Teilspulen ermöglicht. Abhängig von der Ausgestaltung der Hairpin-Wicklung der elektrischen Maschine können entsprechend auch mehrere entsprechende zusätzliche Schaltringe (1 ) oder auch nur ein einzelner entsprechender zusätzlicher Schaltring (1 ) vorgesehen wer den oder es kann auch auf zusätzliche Schaltringe (1 ) ohne Leistungsanschluss (4) verzichtet werden. The exemplary embodiment in FIG. 1 additionally comprises switching rings (1) which have no power connection (4) and, for example, for connecting different ones Serve coil strands of hairpin winding. Shown are two diametrically opposed sub-segments as additional switching rings (1) which are arranged on a circumferential radius. This enables, for example, a connection for a hairpin winding with two partial coils arranged in parallel. Depending on the design of the hairpin winding of the electrical machine, several corresponding additional switching rings (1) or only a single corresponding additional switching ring (1) can also be provided, or additional switching rings (1) without power connection (4) can also be provided. to be dispensed with.
An jedem Schaltring (1 ) sind im gezeigten Ausführungsbeispiel mindestens zwei Verbindungsleiter (2) vorgesehen, um den jeweiligen Schaltring mit in Fig. 1 nicht dargestellten Anschlusspins (7) der Hairpin-Wicklung zu verbinden. Die Verbindungs leiter (2) sind mit der oberen Schmalseite der rechteckigen Schaltringe (1 ) in axialer Richtung verbunden und ändern die Ausrichtung im weiteren Verlauf in radiale Rich tung, um eine Kontaktierung von an den Schaltringen (1 ) vorbeigeführten Anschluss pins (7) zu ermöglichen. Vorzugsweise enden die Verbindungsleiter (2) auf einer gleichen Höhe sowohl in axialer als auch in radialer Richtung, wodurch die Verbin dung mit den Anschlusspins (7) vereinfacht wird. Jeder Verbindungsleiter (2) weist in Fig. 1 eine Breite auf, die mehrere - hier drei - Anschlusspins (7) überdeckt. In the exemplary embodiment shown, at least two connecting conductors (2) are provided on each switching ring (1) in order to connect the respective switching ring to connection pins (7), not shown in FIG. 1, of the hairpin winding. The connecting conductors (2) are connected to the upper narrow side of the rectangular switching rings (1) in the axial direction and change the orientation in the further course in the radial direction in order to make contact with the connecting pins (7) guided past the switching rings (1) enable. The connecting conductors (2) preferably end at the same height both in the axial and in the radial direction, as a result of which the connection to the connecting pins (7) is simplified. In Fig. 1, each connecting conductor (2) has a width that covers several — here three — connection pins (7).
Zusätzlich weist jeder Verbindungsleiter (2) an seinem vorderen Ende Teilbereiche (3) auf, welche eine geringere Breite aufweisen und derart voneinander in tangentia ler Richtung beabstandet sind, dass die Teilbereiche (3) zwischen benachbarten, mit dem Verbindungsleiter (2) zu verbindenden Anschlusspins (7) angeordnet werden kann. Durch diese Teilbereiche kann der Anschlusspin (7) auf mindestens zwei Sei ten vom Verbindungsleiter (2) kontaktiert werden, wodurch die mechanische Stabilität sowie die übertragbare elektrische Leistung verbessert werden kann. In addition, each connecting conductor (2) has at its front end partial areas (3) which have a smaller width and are spaced apart from one another in the tangential direction such that the partial areas (3) between adjacent connecting pins to be connected to the connecting conductor (2) (7) can be arranged. Through these sub-areas, the connection pin (7) can be contacted on at least two sides of the connecting conductor (2), whereby the mechanical stability and the transferable electrical power can be improved.
Bei dem gezeigten Ausführungsbeispiel sind die Verbindungsleiter am axial oberen Ende und nach radial außen vorgesehen. Abhängig vom vorhandenen Bauraum so wie der Ausgestaltung der elektrischen Maschine sowie deren Hairpin-Wicklung und die Anordnung der Verschaltung zu dieser, sind auch andere Ausführungsformen möglich. Die Verbindungsleiter (2) können auch, gegebenenfalls teilweise, nach in- nen geformt sein. Ebenso können die Verbindungsleiter (2) an der unteren, der Hair- pin-Wicklung zugewandten Schmalseite, welche eine Stirnseite darstellt, des jeweili gen Schaltrings (1 ) vorgesehen sein. In the exemplary embodiment shown, the connecting conductors are provided at the axially upper end and radially outward. Depending on the available installation space, such as the design of the electrical machine and its hairpin winding and the arrangement of the circuitry with it, other embodiments are also possible. The connecting conductors (2) can also, if necessary partially, according to be shaped. Likewise, the connecting conductors (2) can be provided on the lower narrow side, facing the hairpin winding, which represents an end face, of the respective switching ring (1).
Entsprechendes gilt für Ausführungsformen mit Schaltringen (1 ), bei denen die Schaltringe (1 ) jeweils als in axialer Richtung benachbarter Ringscheiben bezie hungsweise Ringscheibensegmente ausgebildet sind, wobei sich die Verbindungslei ter (2) vorzugsweise von den inneren oder äußeren Umfangsflächen, welche wiede rum die Schmalseiten der Schaltringe (1 ) darstellen, ausgehen. The same applies to embodiments with switching rings (1), in which the switching rings (1) are each formed in the axial direction as adjacent ring disks or ring disk segments, the connecting line ter (2) preferably being formed from the inner or outer peripheral surfaces, which in turn surrounds the Represent the narrow sides of the shift rings (1), go out.
Die Verbindungsleiter (2) können wie beim in Fig. 1 dargestellten Beispiel mit koaxia len Schaltringen (1 ) ebenfalls in radialer Richtung ausgerichtet sein, wobei auch Aus führungsformen, bei denen die Verbindungsleiter (1 ) in axialer Richtung ausgerichtet sind. The connecting conductor (2) can also be aligned in the radial direction, as in the example shown in FIG. 1, with coaxial switching rings (1), with embodiments from which the connecting conductor (1) is aligned in the axial direction.
Zur Verbindung mit einer nicht dargestellten Leistungselektronik, weißt zumindest ein Teil der Schaltringe (1 ) jeweils einen Leistungsanschluss (4) auf. Die schematisch dargestellten Leistungsanschlüsse (4) sind in axialer Richtung vorgesehen. Im dar gestellten Beispiel sind drei Schaltringe (1 ) jeweils mit einem Leistungsanschluss (4) verbunden. Die drei Leistungsanschlüsse sind zueinander und in einer Reihe ausge richtet. Abhängig von der Anordnung der Leistungselektronik beziehungsweise der Stromführung können die Leistungsanschlüsse (4) auch anders angeordnet werden. Prinzipiell wird jedoch eine Anordnung in räumlicher Nähe und mit einer einheitlichen Höhe bevorzugt, da hierdurch die Durchführung durch Gehäusebauteile oder auch eine Verwendung von Steckverbindungen vereinfacht wird. For connection to power electronics (not shown), at least some of the switching rings (1) each have a power connection (4). The power connections (4) shown schematically are provided in the axial direction. In the example shown, three switching rings (1) are each connected to a power connection (4). The three power connections are aligned with each other and in a row. Depending on the arrangement of the power electronics or the current supply, the power connections (4) can also be arranged differently. In principle, however, an arrangement in close proximity and with a uniform height is preferred, since this simplifies the implementation by housing components or the use of plug connections.
Im weiteren Verlauf der Leistungsanschlüsse (4) in Richtung der Schaltringe (1 ) wei sen die Leistungsanschlüsse (4) vorzugsweise Aussparungen (6) auf, um den Schalt ring (1 ) aufnehmen zu können, wodurch eine große Kontaktfläche zwischen Leis tungsanschluss (4) und Schaltring (1 ) erreicht werden kann. Die Aussparung (6) kann hierbei insbesondere mit zwei oder bei mittigen Aussparungen (6) drei Seiten der Aussparung (6) in Kontakt treten. In the further course of the power connections (4) in the direction of the switching rings (1), the power connections (4) preferably have cutouts (6) in order to be able to accommodate the switching ring (1), as a result of which a large contact area between the power connection (4) and switching ring (1) can be reached. The recess (6) can in particular come into contact with two or, in the case of central recesses (6), three sides of the recess (6).
Insbesondere um eine Kontaktierung von Schaltringen (1 ), welche zwischen zwei weiteren Schaltringen (1 ) angeordnet sind, zu ermöglichen kann zumindest ein Teil der Schaltringe (1 ) im Bereich der Leistungsanschlüsse (4) von einer kreisringförmi- gen Form abweichen, um einen für eine Isolierung ausreichenden Abstand zwischen den Schaltringen (1 ) zu gewährleisten. In particular, in order to enable contacting of switching rings (1) which are arranged between two further switching rings (1), at least some of the switching rings (1) in the area of the power connections (4) can be deviate from the shape in order to ensure a sufficient distance between the switching rings (1) for insulation.
Im Ausführungsbeispiel der Fig. 1 sind vier Schaltringe (1 ) gezeigt, wobei der äußere Schaltring (1 ) keinen Leistungsanschluss (4) aufweist und in zwei separate Kreisring segmente geteilt ist, wobei die Leistungsanschlüsse (4) der anderen Schaltringe (1 ) in einem Bereich zwischen den Kreisringsegmenten angeordnet sind. In the embodiment of Fig. 1 four switching rings (1) are shown, the outer switching ring (1) has no power connection (4) and is divided into two separate circular ring segments, the power connections (4) of the other switching rings (1) in one Area between the circular ring segments are arranged.
Die Leistungsanschlüsse (4) der beiden mittleren Schaltringe (1 ) sind jeweils über einer seitlich am Leistungsanschluss (4) vorgesehene Aussparung (6) mit dem jewei ligen Schaltring (1 ) verbunden. Die Aussparungen (6) sind hierbei gegenüberliegend vorgesehen, das heißt für dem radial äußeren der mittleren Schaltringe (1 ) auf der radial inneren Seite und auf der radial äußeren Seite des radial inneren der mittleren Schaltringe (1 ). Somit können die mittleren Schaltringe (1 ) kreisringförmig mit einem konstanten Durchmesser ausgebildet werden und gleichzeitig eine ausreichend gro ße Kontaktfläche für die Verbindung mit den Leistungsanschlüssen (4) bereitgestellt werden. The power connections (4) of the two middle switching rings (1) are each connected to the respective switching ring (1) via a recess (6) provided on the side of the power connection (4). The recesses (6) are provided opposite one another, that is to say for the radially outer side of the middle shift rings (1) on the radially inner side and on the radially outer side of the radially inner side of the middle shift rings (1). Thus, the middle switching rings (1) can be designed in a circular shape with a constant diameter and at the same time a sufficiently large contact area can be provided for the connection to the power connections (4).
Der radial innere Schaltring (1 ) weist in Fig. 1 zumindest im Bereich des Leistungs anschlusses (4) des benachbarten Schaltrings (1) eine nach innen abweichende Form auf, um ausreichend Abstand zum Leistungsanschluss (4) des benachbarten Schaltrings (1 ) zu gewährleisten. The radially inner switching ring (1) in Fig. 1 at least in the area of the power connection (4) of the adjacent switching ring (1) has an inwardly deviating shape in order to ensure sufficient distance to the power connection (4) of the adjacent switching ring (1) .
Der radial innere Schaltring (1) ist in dargestellten Ausführungsbeispiel mit einer Stromschiene (5) mit dem Leistungsanschluss (4) verbunden. Die Stromschiene (5) stellt hierbei einen selbsttragenden Flachleiter dar, welcher an einem Ende mit dem Schaltring (1 ) und am anderen Ende mit einem Leistungsanschluss (4) elektrisch lei tend verbunden ist. Die Stromschiene (5) ist dabei derart geformt, dass der Leis tungsanschluss (4) entsprechend zu den anderen Leistungsanschlüssen (4) positio niert ist. Hierzu weist die Stromschiene (5) in Fig. 1 eine abgewinkelte Form auf, wel che mit einem Schenkel mit der radial inneren Umfangsfläche des Schaltrings (1 ) verbunden ist, und der andere Schenkel sich axial beabstandet über die weiteren Schaltringe (1 ) erstreckt, um die Leistungsanschlüsse (4) in einer Reihe zu positio nieren. In the exemplary embodiment shown, the radially inner switching ring (1) is connected to the power connection (4) by a busbar (5). The busbar (5) here represents a self-supporting flat conductor which is electrically connected at one end to the switching ring (1) and at the other end to a power connection (4). The busbar (5) is shaped such that the power connection (4) is positioned corresponding to the other power connections (4). For this purpose, the busbar (5) in FIG. 1 has an angled shape, which is connected with one leg to the radially inner circumferential surface of the switching ring (1), and the other leg extends axially spaced over the further switching rings (1), to position the power connections (4) in a row.
Durch die Verwendung von Stromschienen (5) kann die Position der Leistungsan schlüsse (4) beliebig an den vorhandenen Bauraum angepasst werden. Fig. 2 zeigt einen Ausschnitt eines Ausführungsbeispiels mit Verbindungsleitern (2) gemäß Fig. 1 zusammen mit einem entsprechenden Ausschnitt mit Anschlusspins (7) der Flairpin-Wicklung. Wie bei Fig. 1 sind die Verbindungsleiter (2) axial nach oben und radial nach außen angeordnet. Die Anschlusspins (7) der Flairpin-Wicklung sind in diesem Beispiel radial außen an den Schaltringen (1 ) vorbeigeführt. Im dargestell ten Beispiel sind jeweils drei benachbarte Anschlusspins (7) einer gleichen Phase zugeordnet. By using busbars (5), the position of the power connections (4) can be adapted to the existing installation space. FIG. 2 shows a section of an exemplary embodiment with connecting conductors (2) according to FIG. 1 together with a corresponding section with connection pins (7) of the Flairpin winding. As in FIG. 1, the connecting conductors (2) are arranged axially upwards and radially outwards. In this example, the connection pins (7) of the Flairpin winding are passed radially outside the switching rings (1). In the illustrated example, three adjacent connection pins (7) are assigned to the same phase.
Die jeweils drei benachbarten Anschlusspins (7) sind mit einem einzigen Verbin dungsleiter (2) verbunden, wobei zwischen jeweils zwei der drei Anschlusspins (7) ein Teilbereich (3) angeordnet ist. Durch die Teilbereiche (3) werden die Anschluss pins (7) auf mindestens zwei Seiten des rechteckigen Querschnitts durch den Ver bindungsleiter (2) kontaktiert und mit diesem verbunden. Flierdurch wird die Positio nierung der Bauteile zueinander vor dem Verbinden, beispielsweise Verschweißen, vereinfacht sowie die Kontaktfläche und somit die übertragbare Leistung vergrößert. The three adjacent connection pins (7) are connected to a single connec tion conductor (2), a portion (3) being arranged between two of the three connection pins (7). Through the partial areas (3), the connection pins (7) on at least two sides of the rectangular cross section are contacted by the connecting conductor (2) and connected to the latter. The positioning of the components relative to one another before connection, for example welding, is simplified and the contact area and thus the transferable power is increased.
Das in Fig. 3 gezeigte weitere Ausführungsbeispiel einer Verschaltung ist analog zu dem in Fig. 1 aufgebaut, weshalb auf die obige Beschreibung verwiesen wird. The further exemplary embodiment of an interconnection shown in FIG. 3 is constructed analogously to that in FIG. 1, which is why reference is made to the above description.
Im Unterschied zu Fig. 1 sind jedoch die Verbindungsleiter (2) anders ausgeführt. Ein Verbindungsleiter (2) ist jeweils mit zwei Anschlusspins (7) verbunden. Flierzu weist der Verbindungsleiter (2) einen vorderen Teilbereich (3) auf, der zwischen zwei An schlusspins (7) angeordnet wird. Im dargestellten Beispiel behält der Verbindungslei ter (2) im weiteren Verlauf den Querschnitt des Teilbereichs (3) bei. Alternativ kann der Querschnitt des Verbindungsleiters (2), insbesondere in Annäherung an den Schaltring (1 ), vergrößert sein. In contrast to Fig. 1, however, the connecting conductors (2) are designed differently. A connecting conductor (2) is connected to two connection pins (7). Flierzu the connecting conductor (2) has a front portion (3), which is arranged between two connection pins (7). In the example shown, the Verbindungslei ter (2) maintains the cross section of the portion (3) in the further course. Alternatively, the cross section of the connecting conductor (2) can be enlarged, in particular in proximity to the switching ring (1).
Der Teilbereich (3) ist entgegen Fig. 1 in Fig. 3 in axialer Richtung angeordnet und verläuft weitestgehend parallel zu den Anschlusspins (7). Durch den parallelen Ver lauf kann die Kontaktfläche mit dem Anschlusspin (7) vergrößert werden. Da der An schlusspin (7) nur auf einer Seite durch den Teilbereich (3) kontaktiert wird, ist die Positionierung etwas erschwert, jedoch kann etwas Bauraum eingespart werden. Contrary to FIG. 1, the partial area (3) is arranged in the axial direction in FIG. 3 and runs largely parallel to the connection pins (7). Due to the parallel course, the contact area with the connection pin (7) can be enlarged. Since the connection pin (7) is only contacted on one side by the partial area (3), the positioning is somewhat difficult, but some space can be saved.
Bei mehr als zwei benachbarten Anschlusspins (7) mit gleicher Phase, wie bei spielsweise drei wie in Fig. 3, sind entsprechend zwei Verbindungsleiter (2) vorgese hen, welche zumindest zwischen den Teilbereichen (3) eine lichte Weite aufweisen, die zur Aufnahme eines Anschlusspins (7) geeignet ist. Fig. 4 stellt analog zu Fig. 2 einen vergrößerten Ausschnitt einer Verschaltung mit einer Flairpin-Wicklung gemäß Fig. 3 dar. If there are more than two adjacent connection pins (7) with the same phase, such as three as in Fig. 3, two connecting conductors (2) are provided accordingly, which at least between the partial areas (3) have a clear width that is suitable for receiving a Connection pins (7) is suitable. FIG. 4 represents an enlarged section of an interconnection with a flairpin winding according to FIG. 3 analogously to FIG. 2.
Die Teilbereiche (3) sind jeweils zwischen zwei Anschlusspins (7) angeordnet und mit diesen verbunden. Die jeweils drei Anschlusspins (7) einer Phase sind mit zwei Verbindungsleiter (2) mit dem Schaltring (1 ) verbunden. Somit wird der mittlere An schlusspin (7) auf zwei Seiten von einem Verbindungsleiter (2) kontaktiert, wobei die beiden äußeren jeweils nur durch einen Verbindungsleiter (2) kontaktiert sind. The sections (3) are each arranged between two connection pins (7) and connected to them. The three connection pins (7) of each phase are connected to the switching ring (1) by two connecting conductors (2). Thus, the middle connection pin (7) is contacted on two sides by a connecting conductor (2), the two outer ones being contacted only by one connecting conductor (2).
Die Erfindung ist nicht auf die beschriebenen Ausführungen eingeschränkt. Es kön nen wie oben ausgeführt, auch nur einzelne vorteilhafte Merkmale vorgesehen wer den beziehungsweise verschiedene Merkmale unterschiedlicher Beispiele miteinan der kombiniert werden. The invention is not restricted to the embodiments described. As stated above, only individual advantageous features can be provided, or the different features of different examples can be combined with one another.
Bezuaszeichen SchaString Reference number SchaString
Verbindungsleiter Interconnector
Teilbereich (des Verbindungsleiters) Leistungsanschluss Sub-area (of the connecting conductor) power connection
Stromschiene Track
Aussparung Recess
Anschlusspin Connector pin
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018219536.6A DE102018219536A1 (en) | 2018-11-15 | 2018-11-15 | Circuit arrangement for an electrical machine |
| DE102018219536.6 | 2018-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020099609A1 true WO2020099609A1 (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2019/081417 Ceased WO2020099609A1 (en) | 2018-11-15 | 2019-11-15 | Interconnection arrangement for an electrical machine |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102018219536A1 (en) |
| WO (1) | WO2020099609A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020114128B4 (en) | 2020-05-27 | 2023-01-19 | Schaeffler Technologies AG & Co. KG | Interconnection arrangement of a wave winding of a stator of an electrical machine |
| DE102021203954A1 (en) * | 2020-06-24 | 2021-12-30 | Robert Bosch Gesellschaft mit beschränkter Haftung | Stator of an electrical machine |
| DE102020207906A1 (en) * | 2020-06-25 | 2021-12-30 | Zf Friedrichshafen Ag | Distributed winding |
| DE102020133274A1 (en) * | 2020-12-14 | 2022-06-15 | Bayerische Motoren Werke Aktiengesellschaft | Arrangement of a contact element on free coil conductor ends of an electrical machine, electrical machine for a motor vehicle, method for providing a contact element for an electrical machine and motor vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000209802A (en) * | 1999-01-18 | 2000-07-28 | Denso Corp | INSULATING STRUCTURE OF JOINT, INSULATING STRUCTURE OF ROTARY ELECTRIC MACHINE |
| US20120274156A1 (en) * | 2011-04-29 | 2012-11-01 | Chamberlin Bradley D | Electric machine module insulation system and method |
| US20160303686A1 (en) * | 2015-04-16 | 2016-10-20 | MAGNETI MARELLI S.p.A. | Laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine |
| WO2017118516A1 (en) * | 2016-01-08 | 2017-07-13 | Zf Friedrichshafen Ag | Stator for an electrical machine having an interconnection device for stator coils, and electrical machine having a stator of this kind |
| US20180097416A1 (en) * | 2016-09-30 | 2018-04-05 | Faraday&Future Inc. | Nested three phase bus bar unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012004994A1 (en) * | 2012-03-13 | 2013-07-11 | Daimler Ag | Stator for electrical machine for electric powertrain of motor vehicle, has respective coil wire that is electrically connected to interconnection element through cutting edge of fixing element |
| DE102013105571A1 (en) * | 2013-05-29 | 2014-12-04 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Contact element for contacting at least one winding wire |
| JP2015080382A (en) * | 2013-10-18 | 2015-04-23 | アスモ株式会社 | Bus-bar unit and electric motor |
| CN104953769B (en) * | 2014-03-31 | 2019-03-22 | 德昌电机(深圳)有限公司 | Electric motor end cap and the motor for using it |
-
2018
- 2018-11-15 DE DE102018219536.6A patent/DE102018219536A1/en active Pending
-
2019
- 2019-11-15 WO PCT/EP2019/081417 patent/WO2020099609A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000209802A (en) * | 1999-01-18 | 2000-07-28 | Denso Corp | INSULATING STRUCTURE OF JOINT, INSULATING STRUCTURE OF ROTARY ELECTRIC MACHINE |
| US20120274156A1 (en) * | 2011-04-29 | 2012-11-01 | Chamberlin Bradley D | Electric machine module insulation system and method |
| US20160303686A1 (en) * | 2015-04-16 | 2016-10-20 | MAGNETI MARELLI S.p.A. | Laser welding method to weld two adjacent metal elements of a stator winding with rigid bars for an electric machine |
| WO2017118516A1 (en) * | 2016-01-08 | 2017-07-13 | Zf Friedrichshafen Ag | Stator for an electrical machine having an interconnection device for stator coils, and electrical machine having a stator of this kind |
| US20180097416A1 (en) * | 2016-09-30 | 2018-04-05 | Faraday&Future Inc. | Nested three phase bus bar unit |
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| DE102018219536A1 (en) | 2020-05-20 |
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