Patents by Inventor Tobias Schrenk

Tobias Schrenk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230361641
    Abstract: The invention relates to a stator (IO) in an electric machine (I) with a laminated core (II) formed in an annular fashion about a central axis (A), on which core stator coils (16) with coil ends (16a, b) are arranged by means of formers (12a, 12b). The stator (IO) comprises wiring device (20), on which a plurality of mutually isolated connecting conductors (22-26) with coil connection areas (22a-26a) are present for connecting the stator coils (16). The wiring device (20) is joined on the stator in an axial joining direction to the stator coils (16) and is secured by axial connection means (30a, b) to the formers (12a), thus forming a plurality of axial connections (32a, b). According to the invention, to increase the stiffness of the stator (IO), radial supporting means (40, 41) are additionally formed on the wiring device (20) to interact with the formers (12a), said means being designed to be functionally independent of the axial connection means (30a, b).
    Type: Application
    Filed: November 25, 2020
    Publication date: November 9, 2023
    Inventors: Tobias SCHRENK, Christoph WIEDER, Katja WILLACKER, Roland LINDWURM, Jochen WITTMANN
  • Publication number: 20230253845
    Abstract: A distributed winding for an electric machine may include a coil body with numerous grooves distributed over its circumference, where there are at least two poles for the winding, where there are at least two parallel winding strands for each pole, where each winding strand is composed of at least one wire, which has at least one groove region that runs axially in a groove and a connection region at both ends, where the connection regions protrude axially above the coil body, where each winding strand has contact pins that form connection regions on both ends, and where at least some of the contact pins in the same phase are located in adjacent grooves. That at least one of the adjacent contact pins in the same phase may be bent along the circumference in order to minimize the spacing between the contact pins.
    Type: Application
    Filed: June 17, 2021
    Publication date: August 10, 2023
    Applicant: ZF Friedrichshafen AG
    Inventors: Alexander Rössert, Bernhard Schmitt, Kaijun Xu, Kai Mehlstäubl, Tobias Schrenk
  • Publication number: 20220149690
    Abstract: The present disclosure relates to an interconnection assembly for a stator of an electrical machine. The interconnection assembly comprises a shaped bus bar, which has a first region, which comprises a connection point of the interconnection assembly for an external connection, a second region, in which a connecting point for forming a connection of the bus bar to a stator winding is formed, and a central region, which connects the first region and the second region. The first region and the second region are arranged in parallel planes. The central region is oriented in such a way that an angle of a transition between the first region and the central region and an angle of a transition between the second region and the central region deviate from a right angle. The disclosure also relates to a stator having an interconnection assembly.
    Type: Application
    Filed: March 3, 2020
    Publication date: May 12, 2022
    Applicant: ZF Friedrichshafen AG
    Inventors: Ralf Wittstadt, Katja Willacker, Jochen Wittmann, Sebastian Baumgart, Norbert Lohaus, Tobias Schrenk, Roland Lindwurm, Christoph Wieder