Patents by Inventor Stefan Riess

Stefan Riess 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: 20250149954
    Abstract: An axial flux machine includes a rotor mounted rotatably relative to a stator. The stator has at least one first disc-shaped stator body, and the rotor and also the first stator body are arranged such that a first magnetically active gap running in a radial plane is formed axially between the first stator body and the rotor. The stator is surrounded at least in portions by a motor housing; a ring-segment-shaped groove which is open towards the first stator body and extends in a radial plane is formed; and a plurality of cooling openings are provided in the motor housing in the region of the ring-segment-shaped groove, by means of which cooling openings a cooling fluid that can be introduced into the ring-segment-shaped groove can be applied to the first stator body.
    Type: Application
    Filed: February 2, 2023
    Publication date: May 8, 2025
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Benjamin Stober, Stefan Rieß
  • Publication number: 20250149945
    Abstract: An electrical axial flux machine, in particular for a drive train of a hybrid or fully electrically operated motor vehicle is provided. The axial flux machine includes a stator having a plurality of stator coils distributed over the circumference of the stator; power electronics for supplying current to the stator coils; and a high-voltage terminal for establishing an electrical connection between the stator coils and the power electronics. Busbars are located above the stator coils, in the radial direction. The busbars enclosing, in an annular manner, the stator and/or a rotor that can be rotated relative to the stator, and electrically conductively connecting the stator coils to the high-voltage terminal.
    Type: Application
    Filed: February 2, 2023
    Publication date: May 8, 2025
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Dirk Reimnitz, Stefan Rieß
  • Publication number: 20240380273
    Abstract: An axial flux machine including a rotor rotatably mounted relative to a stator, the stator having at least one first disc-shaped stator body, and the rotor as well as the first stator body being arranged such that a first magnetically effective gap through which a cooling fluid can flow is formed axially between the first stator body and the rotor. The axial flux machine has at least one first cooling circuit in which the cooling fluid, during operation of the axial flux machine, enters the first gap at a radially inner periphery, flows through the first gap outwardly in the radial direction, and exits the first gap at a radially outer periphery, wherein at least one first cooling channel which can be traversed by the cooling fluid is arranged at the outer periphery of the first gap and guides the cooling fluid back to the radially inner periphery of the first gap.
    Type: Application
    Filed: September 6, 2022
    Publication date: November 14, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Ivo AGNER, Stefan Riess
  • Patent number: 12046967
    Abstract: A stator for an electric machine, comprising a stator core and a stator winding, wherein the stator core has a plurality of slots, which are spaced apart in a circumferential direction and have a depth running in the radial direction, and allows the arrangement of slot sections of the stator winding in a plurality of radially spaced-apart radial positions, wherein the stator has a strip-like winding unit comprising a first and a second winding conductor, wherein the two winding conductors run in a first and a second layer of the winding unit and each comprises: a plurality of straight slot sections which run in a transverse direction of the winding unit and are arranged in parallel, a plurality of first bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a first longitudinal side of the winding unit, a plurality of second bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a second l
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: July 23, 2024
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Richard Bernauer, Stefan Rieß, Johann Oswald, Michael Menhart
  • Publication number: 20240204621
    Abstract: An electric machine for an electric drive train in a motor vehicle including a rotor that is rotatably mounted relative to a stator, the rotor having a rotor shaft with at least one first rotor member which is non-slidably arranged on the rotor shaft for conjoint rotation therewith, the stator having a first stator member and a second stator member which are spaced apart from one another; the first stator member has a first stator winding, and the second stator member has a second stator winding, the first stator winding being arranged within a first hydraulic chamber, and the second stator winding being arranged within a second hydraulic chamber, at least part of the stator windings being able to come into contact with a hydraulic fluid in the hydraulic chambers.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 20, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Riess, Michael Menhart, Johann Oswald, Carsten Sonntag
  • Publication number: 20240204590
    Abstract: A stator of an electric prime mover and to an electric prime mover having the stator. The stator includes a stator core and windings of at least one electrical conductor that are arranged annularly on the stator core, and at least one wet chamber through which a coolant flows, so that heat from at least one winding can be absorbed by the coolant. The stator and the electric prime mover constitute units which implement long-lasting and efficient cooling of the stator while using a small axial installation space.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 20, 2024
    Applicant: Schaeffler Technologies AG & Co.. KG
    Inventors: Michael Menhart, Stefan Riess, Johann Oswald, Carsten Sonntag, Daniel Mahler
  • Publication number: 20240204609
    Abstract: An electric machine, for an electric drive train in a motor vehicle, includes a rotor rotatably mounted relative to a stator, the stator having a first stator member with a first stator winding arranged within a first chamber, at least part of which is enclosed by a delimiting first casing component. The first casing component contains an electric connection element with a contacting member and a reception sleeve which extend therethrough such that a first portion of the reception sleeve protrudes into the first chamber and a second portion of the contacting member is contactable from the side of the first casing component facing away from the first chamber. The contacting member is secured in the reception sleeve, which is accommodated in the first casing component. The contacting body is fixed in the receiving sleeve, which is received in the first housing component.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 20, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Riess, Michael MENHART, Carsten SONNTAG, Johann OSWALD
  • Publication number: 20240195268
    Abstract: An electrical machine having a rotor mounted rotatably relative to a stator, the rotor has a rotor shaft with a rotor body mounted thereon for rotation and displacement therewith. The stator has a stator body with a first stator winding arranged within a first hydraulic space, within which the first stator winding can be contacted at least in sections by a hydraulic fluid. An electrical conductor of the first stator winding emerges in the axial direction from the first stator body and reaches through a partition, and a leadthrough element is arranged in the partition, with the electrical conductor (reaching through the leadthrough element to form a hydraulic barrier between the hydraulic fluid on the side of the partition facing the stator body and the hydraulic fluid on the side of the partition facing away from the stator body.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 13, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Riess, Stefan RIESS, Michael MENHART
  • Publication number: 20240195253
    Abstract: stator of an electric axial flux machine as well as to an electric axial flux machine. The stator of the axial flux machine includes a plurality of axially protruding stator teeth, a first winding being wound about at least one stator tooth, the first winding being surrounded on at least part of its radially outer face by at least one additional winding. The stator of an axial flux machine and the axial flux machine equipped with this stator afford durable units which combine an axially compact size with high performance.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 13, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Michael MENHART, Stefan RIESS, Johann OSWALD, Carsten SONNTAG, Andrä CAROTTA
  • Publication number: 20240195267
    Abstract: An electric machine, in particular an axial flux machine, including a rotor mounted in a dry chamber rotatable relative to a stator, the rotor having a rotor shaft with at least one first disk-shaped rotor member which is non-slidably arranged on the rotor shaft for conjoint rotation therewith, the stator having a first annular disk-shaped stator member and a second annular disk-shaped stator member which are arranged coaxially to one another and coaxially to the rotor shaft and are axially spaced apart from one another, the rotor being arranged in the space therebetween.
    Type: Application
    Filed: March 8, 2022
    Publication date: June 13, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan Riess, Michael Menhart, Johann Oswald, Carsten Sonntag
  • Publication number: 20240195255
    Abstract: An electric machine comprises a stator, a rotor and an air gap between the stator and the rotor. The stator includes a stator member, a stator winding, an insulating coating between the stator winding and the stator member to provide electric insulation between the stator winding and the stator member, and a local depression in the stator member. The insulating coating is disposed in the local depression. The local depression is located on a side of the stator member facing the air gap.
    Type: Application
    Filed: April 8, 2022
    Publication date: June 13, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Michael Menhart, Stefan Riess, Johann Oswald, Carsten Sonntag, Andrä Carotta
  • Publication number: 20240146134
    Abstract: A stator of an electric axial flux machine as well as to an electric axial flux machine are provided. The stator of the axial flux machine includes multiple axially protruding stator teeth, a first winding being wound about at least one stator tooth, the first winding being spaced from the stator tooth by at least one radial spacing element such that a gap is formed between a radially inner face of the first winding and the stator tooth in order for a cooling fluid to be able to flow therethrough. The stator of an axial flux machine and the axial flux machine equipped with this stator afford durable units which ensure efficient cooling and thus high performance.
    Type: Application
    Filed: April 8, 2021
    Publication date: May 2, 2024
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Michael MENHART, Stefan RIESS, Carsten SONNTAG, Andrä CAROTTA, Johann OSWALD
  • Publication number: 20230412024
    Abstract: A rotor of an electric rotating machine, more particularly an axial flux machine, and an electric rotating machine equipped therewith. The rotor of the electric rotating machine, more particularly an axial flux machine, includes a plurality of magnets and a magnet carrier for fixing the magnets, with which carrier the magnets are positioned on a periphery with respect to a hub of the rotor. The magnet carrier extends radially outwards further than the magnets and has a first axial width at the periphery of the positioning of the magnets and forms a widened portion radially outside the magnets which has a second axial width which is greater than the first axial width. Using the rotor proposed here and the electric rotating machine equipped therewith, devices can be provided which, in a simple and cost-effective manner, guarantee efficient and low-wear operation.
    Type: Application
    Filed: July 15, 2021
    Publication date: December 21, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan RIESS, Michael MENHART, Johann OSWALD, Daniel MAHLER
  • Publication number: 20230378847
    Abstract: An electrical machine for a motor vehicle drive, including a housing, a stator, which is accommodated in the housing, and a rotor, which is connected to a connection shaft for conjoint rotation. The connection shaft is radially and axially supported toward a first axial side of the rotor by a double-row rolling bearing assembly and is supported on the housing side, with respect to a second axial side of the rotor opposite the first axial side, by an additional rolling bearing designed at least to transmit axial forces.
    Type: Application
    Filed: October 7, 2021
    Publication date: November 23, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Dirk Reimnitz, Ivo Agner, Stefan Riess
  • Publication number: 20230369925
    Abstract: A stator for an axial flux motor having a laminated stator core which is fastened to a flange, wherein the laminated stator core has a rear side which is interlockingly and frictionally fastened to a front side of the flange, and/or a cooling channel between the laminated stator core and the flange is formed in the region of the fastening. An axial flux motor is also provided having a rotor which is arranged between two stators, of which one or both are as described above.
    Type: Application
    Filed: September 30, 2021
    Publication date: November 16, 2023
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Holger WITT, Michael MENHART, Stefan RIESS, Johann OSWALD, Carsten SONNTAG, Andrä CAROTTA, Daniel MAHLER
  • Publication number: 20220271632
    Abstract: A method for producing a stator for an electrical machine, the stator having a substantially hollow-cylindrical stator core, which has a plurality of grooves spaced apart in a circumferential direction, the method including: providing at least one strip-shaped winding unit having a first winding conductor with a plurality of groove portions running straight in a transverse direction that are mutually parallel; fastening a first end of the winding unit to a lateral surface of a mandrel; winding the winding unit onto the mandrel such that it is bent around the lateral surface of the mandrel spirally; inserting the mandrel, together with the winding unit, into a cavity in the stator core; and unwinding the winding unit from the mandrel with the groove portions of the winding unit being inserted into the grooves of the stator core.
    Type: Application
    Filed: June 4, 2020
    Publication date: August 25, 2022
    Applicant: Schaeffler Technologies AG & Co. KG
    Inventors: Stefan RIESS, Michael MENHART, Johann OSWALD, Oliver STEFFEN, Johannes GOESSWEIN
  • Publication number: 20220216758
    Abstract: A stator for an electric machine, comprising a stator core and a stator winding, wherein the stator core has a plurality of slots, which are spaced apart in a circumferential direction and have a depth running in the radial direction, and allows the arrangement of slot sections of the stator winding in a plurality of radially spaced-apart radial positions, wherein the stator has a strip-like winding unit comprising a first and a second winding conductor, wherein the two winding conductors run in a first and a second layer of the winding unit and each comprises: a plurality of straight slot sections which run in a transverse direction of the winding unit and are arranged in parallel, a plurality of first bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a first longitudinal side of the winding unit, a plurality of second bent end sections which each interconnect two slot sections of the associated winding conductor and are arranged on a second l
    Type: Application
    Filed: April 22, 2020
    Publication date: July 7, 2022
    Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Richard Bernauer, Stefan Rieß, Johann Oswald, Michael Menhart
  • Publication number: 20200287431
    Abstract: The invention relates to an electric machine comprising either a circular-ring-cylindrical stator and a circular-cylindrical rotor which is arranged rotatably inside the stator, or a circular-cylindrical stator and a circular-ring-cylindrical rotor, which is arranged rotatably outside the stator, there being an air gap formed between the stator and the rotor. The rotor comprises a magnetically conductive rotor body and at least one pair of magnets arranged adjacently within the rotor body, wherein magnet axes leaving identical poles of the magnets of the magnet pair intersect one another on the side of the magnets of the magnet pair facing the stator. The rotor body has at least one recess in a region extending in the circumferential direction and radial direction of the rotor and defined by the magnet pair.
    Type: Application
    Filed: October 22, 2018
    Publication date: September 10, 2020
    Inventors: Richard Bernauer, Stefan Riess