Patents by Inventor Tobias Hein

Tobias Hein 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: 20230283132
    Abstract: The present invention relates to a stator of an electric machine with a stator body having a stator axis, which stator body comprises stator grooves in which there runs an electric plug-in winding which is formed from multiple conductor elements (4), conductor elements (4) being provided which each run with conductor branches through one or two of the stator grooves and protrude from the stator grooves on at least one end face of the stator by means of conductor ends (4b) and form a winding head, the conductor ends (4b) of the conductor elements (4) being arranged in the corresponding winding head in a plurality of groups (7) distributed in the circumferential direction in relation to the stator axis, each group (7) comprising a plurality of conductor ends (4b) arranged in a radial direction in relation to the stator axis, in particular aligned in the radial direction, characterized in that at least one, in particular a plurality, of the conductor ends (4b) of each group (7), as viewed in the radial direction
    Type: Application
    Filed: July 6, 2021
    Publication date: September 7, 2023
    Inventors: Andreas Heider, Meiko Boley, Nikola Goranovic, Tobias Hein
  • Publication number: 20230246506
    Abstract: Described is a stator of an electric machine (1) comprising a stator body (5), more particularly stator laminated core, having a stator axis (4), and comprising an electrical plug-in winding (6) which extends through grooves (10) of the stator (2), comprises a plurality of phases and is formed from a plurality of conductor elements (7), wherein conductor elements (7) of the plurality of conductor elements (7) are provided, the conductor ends (8) of which project out of the grooves (10) at least at an end face (11) of the stator (2) and form a winding overhang (9), and comprising, provided on the winding overhang (9), an electrical terminal device (3) which has several busbars (15) for electrical connection to the plug-in winding (6) and by means of which the phases of the plug-in winding (6) can be connected to an external electrical power supply (16), characterised in that the busbars (15) each have at least one through opening (17) for introducing the respective conductor end (8) of at least one of the cond
    Type: Application
    Filed: June 14, 2021
    Publication date: August 3, 2023
    Inventors: Alexander Siegert, Hendrik Bachmann, Johannes Riedl, Tobias Hein
  • Patent number: 11349364
    Abstract: A stator of an electrical machine which has stator slots and conductor elements arranged in the stator slots, which conductor elements each have two conductor ends, is already known. A plurality of conductor ends, which are situated next to one another, of different conductor elements are in each case connected to one another by means of a weld connection, which is provided at the end sides of the conductor ends in question, without additional material. The conductor ends which are connected to one another in each case form a common rectangular conductor cross section which has a height H and a width B, wherein the height H corresponds to the height h of an individual cross section of the conductor ends, and the width B of the common conductor cross section is made up of the sum of the widths b of the individual cross sections of the conductor ends. The weld connection is in each case provided, as seen in the direction of the width B, between two non-melted edge sections of the outermost conductor ends.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: May 31, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Hein, Fabian Lange, Patrick Priebe, Stefan Ossenkopp
  • Patent number: 11296565
    Abstract: The invention relates to a stator having a multi-phase wave winding made of hairpin conductor elements (5). Each phase consists of two parallel or serially connected branches (6, 6.1, 6.2). Each branch has a first (3.1) and a second (3.2) winding portion, which are connected to each other in series. The slot position of the two limbs (5.1) of each hairpin conductor element alternates by +?1. The first winding portion (3.1) extends clockwise along the stator circumference; the second winding portion (3.2) extends counterclockwise and is connected to the first winding portion via a reverse-connector conductor element (12, 12.1, 12.2). Both limbs of the reverse-connector conductor element (12.1) of the first winding branch (6.1) are located in the uppermost slot position; the limbs of the reverse-connector conductor element (12.2) of the second winding branch (6.2) are located in the lowermost slot position.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 5, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Herzberger, Armin Elser, Martin Ermer, Patrick Heuser, Tobias Hein, Johannes Riedl
  • Publication number: 20210376678
    Abstract: The invention relates to a stator having a multi-phase wave winding made of hairpin conductor elements (5). Each phase consists of two parallel or serially connected branches (6, 6.1, 6.2). Each branch has a first (3.1) and a second (3.2) winding portion, which are connected to each other in series. The slot position of the two limbs (5.1) of each hairpin conductor element alternates by +?1. The first winding portion (3.1) extends clockwise along the stator circumference; the second winding portion (3.2) extends counterclockwise and is connected to the first winding portion via a reverse-connector conductor element (12, 12.1, 12.2). Both limbs of the reverse-connector conductor element (12.1) of the first winding branch (6.1) are located in the uppermost slot position; the limbs of the reverse-connector conductor element (12.2) of the second winding branch (6.2) are located in the lowermost slot position.
    Type: Application
    Filed: September 4, 2018
    Publication date: December 2, 2021
    Inventors: Andreas Herzberger, Armin Elser, Martin Ermer, Patrick Heuser, Tobias Hein, Johannes Riedl
  • Patent number: 11183906
    Abstract: The invention relates to a stator (10) for an electric machine comprising a stator package (12); a stator winding, which comprises a plurality of rod-shaped conductors (16a, 16b), which are inserted through the stator package (12) in an axial direction (A); wherein at least one first conductor (16b) and an adjacent second conductor (16b) of the plurality of conductors are electrically connected to each other on an end face (20) of the stator package (12) by means of a bridge (34) formed by laser welding; wherein the bridge (34) formed by laser welding extends at an angle to the axial direction (A) between the conductor ends (18a, 18b) of the first conductor (16a) and the second conductor (16b).
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: November 23, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Jeihad Zeadan, Steffen Jacob, Tobias Hein
  • Publication number: 20210288538
    Abstract: A stator of an electrical machine which has stator slots and conductor elements arranged in the stator slots, which conductor elements each have two conductor ends, is already known. A plurality of conductor ends, which are situated next to one another, of different conductor elements are in each case connected to one another by means of a weld connection, which is provided at the end sides of the conductor ends in question, without additional material. The conductor ends which are connected to one another in each case form a common rectangular conductor cross section which has a height H and a width B, wherein the height H corresponds to the height h of an individual cross section of the conductor ends, and the width B of the common conductor cross section is made up of the sum of the widths b of the individual cross sections of the conductor ends. The weld connection is in each case provided, as seen in the direction of the width B, between two non-melted edge sections of the outermost conductor ends.
    Type: Application
    Filed: May 11, 2017
    Publication date: September 16, 2021
    Inventors: Tobias Hein, Fabian Lange, Patrick Priebe, Stefan Ossenkopp
  • Patent number: 11101720
    Abstract: The invention relates to a method for connecting free flat wire ends (4, 5) with a substantially rectangular cross section with four sides (41, 42, 43, 44) of a stator of an electrical machine, comprising the steps at: stripping a first flat wire end (4), sheathed with an insulation material, such that partial stripping is carried out at least on three sides (41, 42, 43) and such that the insulation material remains complete on a fourth side (44) of the first flat wire end (4), and electrically connecting the stripped first flat wire end (4) on the completely stripped side (43) to a second flat wire end (5).
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 24, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Hein, Fabian Lange, Martin Ermer
  • Publication number: 20200067388
    Abstract: The invention relates to a stator (10) for an electric machine comprising a stator package (12); a stator winding, which comprises a plurality of rod-shaped conductors (16a, 16b), which are inserted through the stator package (12) in an axial direction (A); wherein at least one first conductor (16b) and an adjacent second conductor (16b) of the plurality of conductors are electrically connected to each other on an end face (20) of the stator package (12) by means of a bridge (34) formed by laser welding; wherein the bridge (34) formed by laser welding extends at an angle to the axial direction (A) between the conductor ends (18a, 18b) of the first conductor (16a) and the second conductor (16b).
    Type: Application
    Filed: September 12, 2017
    Publication date: February 27, 2020
    Inventors: Jeihad Zeadan, Steffen Jacob, Tobias Hein
  • Publication number: 20190326801
    Abstract: The invention relates to a method for connecting free flat wire ends (4, 5) with a substantially rectangular cross section with four sides (41, 42, 43, 44) of a stator of an electrical machine, comprising the steps at: stripping a first flat wire end (4), sheathed with an insulation material, such that partial stripping is carried out at least on three sides (41, 42, 43) and such that the insulation material remains complete on a fourth side (44) of the first flat wire end (4), and electrically connecting the stripped first flat wire end (4) on the completely stripped side (43) to a second flat wire end (5).
    Type: Application
    Filed: August 28, 2017
    Publication date: October 24, 2019
    Inventors: Tobias Hein, Fabian Lange, Martin Ermer