Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Christian Koenen

Stefan Oechslen

Jan Naegelkraemer

A rotor of an electric machine of an electric vehicle includes a plurality of permanent magnets a rotor core, which includes a plurality of magnetic receptacle cavities, in each of which one permanent magnet is arranged. The permanent magnets are respectively connected to the rotor core via a spring-groove connection in a form-fit manner such that a displacement of the permanent magnets in a direction of an outer peripheral surface of the rotor core is blocked. The permanent magnets are each integrally manufactured by metal injection molding.

Rotor and electric machine of an electric vehicle

A displacement body for a rotor, wherein the displacement body is configured to be inserted into a slot between two respective rotor teeth, includes a main part, a head part adjoining the main part, and at least one cooling channel, which extends through the displacement body in a depth direction. The head part includes a region flaring towards an outside of the displacement body. The displacement body is configured as a layer stack, which, in the depth direction, includes at least two adjoining layers.

Displacement body for a rotor and correspondingly configured rotor

An electric machine, including a rotor having a rotor shaft and a rotor laminated core, a stator having a stator laminated core with recesses and stator windings disposed in the recesses of the stator laminated core, wherein coolant can flow through the recesses such that the stator windings can be directly cooled by the coolant, wherein channels are configured in the stator laminated core at a distance to the recesses such that the stator windings can be indirectly cooled by the coolant flowing through the channels, and a device via which a flow of coolant through the recesses and through the channels can be set depending on an operating point of the electric machine such that, at first operating points, the coolant can be conducted only through the recesses and, at second operating points, the coolant can be conducted at least through the channels.

Electric machine and method for operating said machine

An electrical machine, as a prime mover of an electrically driven motor vehicle, including a rotor and a stator, wherein the stator surrounds a substantially cylindrical space area, in which the rotor is rotatably arranged, the rotor includes a rotor shaft, on which a rotor core is arranged, the rotor core including groove-like recesses which extend toward the rotor shaft, electrically conductive conductors of a rotor winding and a displacement body for arranging the conductors in the groove-like recess are provided in the groove-like recesses, and at least one cooling channel, which extends in a longitudinal direction of the rotor shaft, is arranged in at least one groove-like recess.

Electric machine

An electric motor vehicle traction motor, including: a liquid-cooled motor stator, a dry-running motor rotor, and a fluid-tight split cage which separates the motor stator and the motor rotor from one another fluidically, the split cage being formed by a fiber composite body, wherein the split cage is axially prestressed in a long-lasting manner by a split cage axial stressing apparatus.

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Stuttgart, Germany

Christian Koenen