Electric machine and motor vehicle
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsFlorian Beck, Philip Moerth, Philipp Petz
Life of this patent
Estimating the term…
Abstract
An electric machine has a stator, a rotor, and a slip ring module which is connected to a motor shaft of the electric machine. The slip ring module is equipped with at least one wire guiding channel, through which a respective contact wire is guided in order to electrically connect a rotor winding to a slip ring. A first section of the wire guiding channel runs from the slip ring in the axial direction parallel to the motor shaft. A second section of the wire guiding channel runs adjacently thereto radially outwards. An elastic seal element which surrounds the respective contact wire is arranged in or on the second section in order to seal the wire guiding channel to prevent a lubricant from entering the channel.
Claims9
An electric machine comprising:
- a stator;
- a rotor which is mounted to be rotatably movable about a center longitudinal axis of a motor shaft of the electric machine;
- and
- a slip ring module which is connected to the motor shaft, is fixed in terms of rotation with respect to the rotor, is rotatable relative to a slip ring of the electric machine, and has a wire guiding channel through which a contact wire for electrically connecting a rotor winding to the slip ring is guided from the latter as far as a wire outlet of the slip ring module,
- wherein:
- a first section of the wire guiding channel runs from the slip ring in an axial direction parallel to a center longitudinal axis and an adjoining second section of the wire guiding channel runs radially outward as far as the wire outlet,
- an elastic sealing element surrounding the contact wire for sealing the wire guiding channel from penetration of a lubricant at the wire outlet is arranged in or on the second section,
- the sealing element is configured as a sealing plug which is arranged in the second section of the wire guiding channel, and
- the sealing plug is fixed in the second section by a molding compound which encases and fixes the contact wire at least in the first section.
Dependencies are inferred from the claim text.