Robert Boschgmbh

Uwe Knappenberger

Thomas Berger

Camilo Carrillo

Armin Ploeger

Karsten Kirchhoff

Alfred Goerlach

Richard Spitz

Klaus Reymann

Stephan Geise

Heinz Lauterbach

Horst Braun

Peter Urbach

Gerhard Pflueger

Christoph Ruf

Andreas Doeffinger

Patrick Heuser

Thomas Bilsing

Felix Bensing

Alexander Wallrauch

Armin Elser

Fabian Lange

Hans-Peter Miller

Daniel Kuehbacher

Birgit Reichert

Matthias Roepke

Ludwig Bolz

Ralph Peter

Alexander Kudlek

Sebastian Stein

Axel Blahak

Sebastian Bruns

Peter Kaelberer

Jannik Stammler

Benjamin Gruler

Michael Schwiderski

Thomas Ballmann

Minas Garas

A rotor () of an electrical machine is already known, comprising a rotor body () which can be rotated about a rotor axis () and comprising several cooling ducts () which have a cooling duct opening () at each of its ends, wherein one cooling duct opening () of one of the cooling ducts () is arranged radially further outside than the other cooling duct opening () of the same cooling duct (). The driving force for generating an airflow through the cooling ducts () is generated by a radial offset between a channel of a hollow shaft of the rotor and one of the cooling duct openings of the rotor. In the rotor () according to the invention, the driving force for generating the airflow is generated solely in the cooling duct () in question of the rotor (). According to the invention: the first cover element () covers the radially innermost partial cross-section of the cooling duct opening () in question with an edge section which is radially outward with respect to the rotor axis () and in each case leaves a radially outermost partial cross-section of the same cooling duct opening () uncovered as a cooling duct outlet (); the other cooling duct opening () of the same cooling duct () is in each case a cooling duct inlet; an inflow which is axial with respect to the rotor axis () is provided in each case upstream of the cooling duct inlets (); and the geometric centre of gravity of the cooling duct outlet () is in each case offset in the radial direction relative to the rotor axis () with respect to the geometric centre of gravity of the cooling duct inlet () of the same cooling duct ().

Rotor of an electric machine

The invention relates to a housing () for an electrical machine () and to an electrical machine () having such a housing (). The housing () comprises an inner wall () and an outer wall (), with a hollow space () therebetween for cooling the electrical machine () with a fluid. The housing () further has a sealing device () on a front face () of the housing (). The housing is particularly characterised in that the sealing device () comprises an annular sealing element () mounted between the inner wall () and the outer wall () so as to seal the front face, and in that the sealing device () comprises a deflection ridge () which projects from the sealing element () in the axial direction of the housing () and is at least partially arranged between the walls (), the deflection ridge () being designed to lead a cooling fluid in the hollow space (). A compact, economical and fluid-tight housing (10) can thus be advantageously provided.

Fluid-cooled housing for an electrical machine

The invention relates to a heat sink () for an electric machine, which heat sink has at least one cooling channel (), which adjoins an interior () surrounded by the heat sink (). The heat sink () is characterized in that the heat sink () is designed as a single-piece plate () bent into a closed ring, in the case of which plate two opposite abutting surfaces () are connected to each other in a fluid-tight manner in the region of a joint (), wherein a plurality of closed channels () extend in the plate (), which channels extend at an angle to the circumferential direction of the ring in such a way that adjacent channels () lead into each other in the region of the joint () and thus form a continuous, spiral channel, which extends in a plurality of spiral turns from an axially front end () to an axially rear end () of the annular heat sink (). In particular, the plate () of the heat sink () can be economically extruded and then brought into a shape suitable for the heat sink () by means of bending and axial offsetting. The heat sink () can be produced in a simple and economical manner and enables efficient cooling of an electric machine while requiring a minimal installation space.

Heat sink for an electric machine and method for producing said heat sink

A double-walled cooling housing () for an electrical machine (). The cooling housing () comprises an inner housing (), an outer housing () and a force transmission element (). The outer housing () surrounds the inner housing (). The force transmission element () is arranged between the inner housing () and the outer housing () and the force transmission element transmits forces that act on the inner housing () to the outer housing (). Moreover, the force transmission element () guides cooling fluid between the inner housing () and the outer housing ().

Thin-walled housing having force transmission elements that guide cooling fluid

The invention relates to a method for producing at least one winding of an electrical machine that has a plurality of poles, in particular of a motor generator, preferably for a hybrid drive of a motor vehicle, the winding being formed by winding parts connected in parallel and each pole being associated with at least one groove set that is associated with the winding parts and comprises a plurality of grooves which have different circumferential angle positions relative to the associated pole, grooves with the same circumferential angle position forming equivalent grooves and each winding part of the winding being wound with the same number of windings in equivalent grooves. The invention also relates to a corresponding winding.

Method for producing a winding of an electrical machine

A regulator unit, in particular for varying an exciter current, preferably for generators of motor vehicles, is proposed, having a housing (), in which the housing () has a wiper contact mounting region () with a guide () and wiper contacts () seated therein, having a regulator housing portion (), in which an electronic controller unit and a regulator heat sink () are received, having a plug element () for electrically connecting the regulator unit () to external contact elements, and in which the regulator unit () has a first through opening () and a second through opening (), by means of which openings the regulator unit () can be fastened to a housing () by means of two bolt elements (). It is provided that the regulator heat sink () is located between the wiper contact mounting region () and the plug element ().

Regulator unit and generator

An electric machine, in particular an alternator for motor vehicles, includes a stator (), which supports a stator winding () that has winding ends (), a voltage regulator assembly (), and a rectifier. The electrical connection between the winding ends () and the rectifier is situated underneath the voltage regulator assembly (). A stator for an electric machine, in particular for an alternator for motor vehicles, includes a stator (), which supports a stator winding () that has winding ends (). The winding ends () are connected to an additional conductor element (), which joins a plurality of individual wires of the winding ends () together by means of a clamp-like junction region () and is embodied in the form of a sheet metal part.

Electric machine and stator provided for same

The invention relates to a fan apparatus for an electrical machine, with a fan (), which can be rotated around an axis, wherein air flows into the fan () in the axial direction and out of the fan () in the radial direction, a bearing plate (), and a magnet wheel (), wherein a flow conduit () is at least partially bounded by the bearing plate () and the magnet wheel () and the flow cross section of the flow conduit () is essentially constant in the radial direction.

Fan arrangement for an electrical machine

A power converter having at least two semiconductor substrates is provided. Each of the substrates has at least two contact surfaces, and the converter also has two thermally conductive mounting plates carrying the semiconductor substrates, which each have an electrical terminal, an attachment arrangement implemented on one of the mounting plates, and having at least one third electrical terminal, which is distinguished in that the mounting plates and the semiconductor substrates form stacks, the mounting plates receiving the semiconductor substrates between themselves, and an electrically and thermally conductive insert, which has at least the third terminal, is arranged between the semiconductor substrates.

Power converter and method for producing the same

The invention relates to a rotating electrical machine with a contacting device whose circumference has at least one slide contact disposed on it, which remains in sliding contact with a brush apparatus (slide system), in which the at least one slide contact is comprises of a wear resistant material. The invention provides that the electrical machine has an internal cooling system in which a fluid/gas mixture used as a cooling medium circulates around the components to be cooled, including the slide system, and the at least one slide contact is comprises of an alloy with at least one alloy component that has an affinity for oxygen.

Rotating electrical machine

An electrical machine formed as a fluid-cooled three-phase alternating current generator has a cup-shaped housing, a stator arranged in the housing, a drive system, a shaft driven by the drive system, a claw pole rotor system mounted on the shaft, the claw pole rotor system including a first pole ring which is mounted on the shaft, formed as a pole wheel half and runs in claws, and a second pole ring which is formed as a pole wheel half and runs also in claws, so that tips of the claws of one of the pole rings extend in gaps between the claws of the other pole ring, pole rings producing a cooling air stream in the housing for withdrawing heat which is generated in the machine by convection through an outer casing of the housing to fluid medium which surrounds the housing, a plurality of substantially radially extending blower vanes formed on substantially flat end side of a respective one of the pole rings which is located at a side opposite to the drive system, and a ring chamber closing the blower vanes in an axial direction and formed as a part of a housing bottom.

Electrical machine with a stator, and a claw pole rotor system composed of two pole wheel halves

An electrical machine is proposed, preferably a rotary current generator (,), with a rectifier component (,) at the rear end area of its end shield (,), in which dissipation of waste heat is to be improved. Positive and negative heat sinks (,) with the positive and negative diodes (,), respectively, are screwed to the end shield (,) so as to be sandwiched together with a printed circuit board (,) for the connection between diodes and winding connections (,) with the inclusion of an insulating plate (,). The upper heat sink (,) has a plurality of cooling air openings (,) arranged next to one another at the inner circumferential area for a cooling air flow generated by the fan of the machine. In order to improve the dissipation of heat, axial cooling fins (,) are formed on at least at some of the cooling air openings (,) of the upper heat sink (,).

Electrical machine, preferably a rotary current generator with a rectifier component and with upper heat sink provided with axial cooling fins

An electrical machine formed as claw pole generator has a ring-shaped stator provided with windings, a claw pole rotor rotatably arranged inside an opening of the stator, the claw pole rotor having a rotor shaft and an exciter coil arranged coaxially to the rotor shaft, the claw pole rotor also having a peripheral surface provided with a plurality of claw poles which overlap the exciter coil and engage in a finger-like manner with groove-shaped intermediate spaces, at least one axially acting fan units arranged at an end side of the claw pole rotor in a region of an outer periphery, and a plurality of honeycombed structures located in the intermediate spaces and extending in a longitudinal direction of the intermediate spaces so that a cooling medium flows through the structures.

Growing community of inventors

Muehlacker, Germany

Uwe Knappenberger