Valeo Eautomotive Germany Gmbh

Valeo Siemens Eautomotive Germany Gmbh

Christoph Wieczorek

Carsten Siepker

Florian Volkmuth

Sebastian Beetz

Nico Wolf

Nikolas Seubert

Christoph Englert

David Förster

Regina Bach

Alexander Schlereth

A rotor for an electric machine is disclosed. The rotor has a rotor shaft, a laminated core arranged on the rotor shaft and a plurality of stacked electrical laminations. The rotor also includes a first end plate arranged on an axial side of the laminated core and having radial protrusions arranged along its circumference, a second end plate arranged on the opposite axial side of the laminated core and having radial protrusions arranged along its circumference, a plurality of rotor windings which are each wound around a protrusion of the first end plate and around an axially opposite protrusion of the second end plate. A central cooling duct runs in the rotor shaft for supplying a coolant, and a radial cooling duct runs outwards from the central cooling duct in the laminated core. In addition, an electric machine and a vehicle having an electric machine of this type are described.

Rotor for an electric machine having a radial cooling duct in the laminated core

A rotor for a rotary electric machine includes a rotor shaft configured to rotate around an axis of rotation, a rotor body formed of a stack of laminations having a plurality of teeth projecting radially and being configured to be mounted coaxially on the rotor shaft. A field coil is wound around each tooth of the plurality of teeth. At least one tooth of the plurality of teeth includes at least one weld seam on a lateral face of the corresponding tooth, the lateral face extending radially and axially along the axis of rotation.

Welding of a stack of laminations for a rotor

An electromagnetic pole () for a rotary electric machine is disclosed. The pole has a tooth () comprising a tooth body (), the tooth () being radially oriented and the tooth () comprising a recess (), a coil () comprising a plurality of wire turns () wound around the tooth () between a first radial end () and a second radial end (), the wire turns () which are the most distant from the tooth body () between the first radial end () and the second radial end (), forming an outer wire layer (), the coil () comprising a bracing wire (), the bracing wire () being wound on the outer wire layer () from the first radial end () to the second radial end () in less than one turn around the tooth () so as to hold in position the outer wire layer ().

Electromagnetic pole for a rotary electric machine and rotor and rotary electric machine comprising such an electromagnetic pole

A rotor () comprising a rotor shaft (), a rotor core () having a core length, windings (), and two impregnation rings (), the windings () forming protruding windings ends (), each one of the two impregnation rings () comprising an annular portion () and a deflector portion (), the annular portion () comprising radial openings (); and a method for impregnating the rotor () comprising starting a rotation of the rotor shaft () and impregnating the windings () with an impregnating agent through two nozzles respectively located upward each one of the two impregnation rings () and oriented towards the radial openings (), the impregnation agent being guided by the deflector portion () towards the protruding windings ends () on both sides of the rotor () at a same time, in order to impregnate the windings () through the core length.

Rotor and method of impregnation of the windings

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Erlangen, Germany

Christoph Wieczorek