Robert Boschgmbh

Robert Bosch Gmbh

Peter Theisinger

Kurt Reutlinger

Marcus Alexander

Mohammad Nassar Albunni

Daniel Klis

Adrian Heinrich Sichau

Juergen Fridrich

A rotor includes a rotor body. A plurality of the rotor poles have a two-layer magnet assembly. Each magnet assembly includes an inner layer of at least three magnets and an outer layer of two magnets. The inner layer forms a radially outwardly open arc. The magnets of the inner and outer layers each have an angle of inclination with respect to a pole center axis. The angle of inclination is formed between the pole central axis and an inclination axis of the respective magnet. The magnets of the radially outer layer are arranged such that a point of intersection of the axis of inclination of the radially outer layer with the pole center axis lies radially inside the radially inner layer, and the angle of inclination of the magnets of the outer layer is smaller than the angle of inclination of the outer magnets of the inner layer.

Rotor of an electric machine

The present invention relates to a rotor () of an electric machine (), comprising a rotor body () which can be rotated about a rotor axis (), has an outer circumference () and a plurality of rotor poles () and is formed by a stack of laminations, each rotor pole () having a central pole axis () and an arrangement of permanent magnets () arranged in pockets () of the rotor body (), in particular the stack of laminations, the arrangement of permanent magnets () comprising two radially spaced layers () having permanent magnets (), the radially inner layer () having two inner pockets () arranged symmetrically with respect to the central pole axis () and an inner connecting portion () between the two inner pockets (), and the radially outer layer () having an outer pocket () arranged symmetrically with respect to the central pole axis (), characterized in that the inner connecting portion () is a single connecting portion arranged symmetrically with respect to the central pole axis (), in that two additional pockets () which act as a flow barrier and are arranged symmetrically with respect to the central pole axis () are provided between the outer circumference () of the rotor body () and the outer pocket (), and in that each additional pocket () forms a first outer connecting portion () between the additional pocket () and the outer pocket ().

Rotor of an electric machine having a multi-layered permanent magnet arrangement

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Markgroeningen, Germany

Peter Theisinger