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

Patrick Knecht

Tobias Engelhardt

Peter Wurster

Rolf Graef

Markus Omlor

A rotor () of an electric motor () has a rotor body () with a rotor shaft receptacle opening () for receiving a rotor shaft (), and a rotor sheath () is on the rotor body () outward of the rotor shaft receptacle opening (). Magnetic field-inducing components () are arranged in the rotor body (). The rotor body () further has first and second end faces () facing away from one another. The rotor () also includes a cooling device () with a supply channel (), a drainage channel () and cooling channels () formed in the rotor body () between the rotor shaft receptacle opening () and the rotor sheath (). The cooling channels () are arranged adjacent to the magnetic field-inducing components (). A method for manufacturing a rotor having a cooling device also is provided.

Rotor of an electric motor having a cooling device and a method for manufacturing a rotor of an electric motor having a cooling device

A rotor device () for an electric machine () has a rotatably supported shaft () and a rotor hub () connected to the shaft () in a rotationally fixed manner. The shaft () has multiple radially outwardly facing shaft protrusions (), and the rotor hub () has multiple radially inwardly facing hub protrusions (). A shaft protrusion () and a respective hub protrusion () abut one another in a touching manner in the radial direction at least in sections. Cavities () are formed between the rotor hub () and the shaft (). The cavities () extend between adjacent shaft protrusions () and the hub protrusions () lying thereon. The cavities () are grouted with a material (). The material () forms form-fit elements () that block relative movement of the rotor hub () and the shaft () in a form-fit manner.

Rotor device for an electric machine, and in particular for a traction drive of a motor vehicle, as well as a method for manufacturing a rotor device

A method is provided for producing a stator arrangement that has a stator core and a winding arrangement. The stator core has stator slots. The winding arrangement has winding elements with a conductor and an insulation layer. Each winding element has two interconnected winding element legs with two winding element end portions on each winding element leg. The method includes positioning the winding elements on the stator core so that the winding element legs extend through one of the stator slots with winding element end portions protruding on a first side of the stator core. The method then includes using a first laser arrangement to remove the insulation layer from regions of the winding element end portions. The method then includes pressing the first and second winding element end portions against one another and using a second laser arrangement to carry out welding.

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Stuttgart, Germany

Patrick Knecht