Patents by Inventor Michael Kohr

Michael Kohr 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).

  • Patent number: 11988281
    Abstract: A method for operating a motor vehicle with a prime mover (1), a drive output (2), and a parking lock (4) is provided. The parking lock (4), in an engaged condition, blocks a shaft (3) coupled to the drive output (2) and, in a disengaged condition, releases the shaft (3). In order to disengage the parking lock (4), at least one coupling mass (6) is coupled to the shaft (3), which is coupled to the drive output (2), while increasing the moment of inertia effective at the shaft (3).
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: May 21, 2024
    Assignee: ZF Friedrichshafen AG
    Inventors: Tobias Kohr, Michael Sohler, Franz Brugger, Bernd Haegele, Patrick Ledig
  • Publication number: 20240029959
    Abstract: A link capacitor for a motor vehicle has a housing, a first busbar and a second busbar for electrical contact to the link capacitor, and at least one coupling element. The housing accommodates a winding for the link capacitor. The first busbar and second busbar are connected to the winding. The coupling element is on the housing and designed to couple the link capacitor to an adjacent link capacitor and/or to a support element.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Fabian Döllinger, Michael Kohr, Ivonne Trenz, Pengshuai Wang, Jonas Zeller
  • Publication number: 20240030692
    Abstract: A capacitor unit for a power converter, wherein the capacitor unit has a first busbar and a second busbar, and at least one capacitor element placed in between the first busbar and the second busbar, wherein the capacitor element is electrically connected to the first busbar at a first side, and wherein the capacitor element is electrically connected to the second busbar at a second side, lying opposite the first side, and a cooling device, wherein the cooling device is thermally coupled to the first busbar with a surface area contact, wherein the cooling device is designed to remove heat from the first busbar.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 25, 2024
    Applicant: ZF Friedrichshafen AG
    Inventors: Jonas Zeller, Michael Kohr, Pengshuai Wang
  • Publication number: 20230249531
    Abstract: Gearbox apparatus for a drive train of a motor vehicle, having at least two electric machines which are assigned to a common gearbox device, the at least two electric machines being arranged in parallel and being arranged together with an electronics device, designed in particular for the electrical supply of the two electric machines, so as to overlap in the axial direction at least in portions in a common spatial volume.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 10, 2023
    Inventors: Fabian RÜGER, Oliver BAYER, Steffen TREUTLEIN, Gerhard MÜLLER, Michael KOHR, Thomas SCHUPP, Niklas SCHWARZMANN
  • Publication number: 20230254976
    Abstract: A temperature sensor for an inverter for operating an electric drive in an electric vehicle or hybrid vehicle includes at least one rod-shaped signal connector, a mount, and a sensor printed circuit board, wherein at least one groove is formed in the mount for the at least one rod-shaped signal connector, wherein the at least one rod-shaped signal connector has an insertion part that is inserted in a printed circuit board in the inverter, wherein the insertion part extends beyond an upper edge of the mount facing the printed circuit board, wherein the at least one rod-shaped signal connector extends at the bottom beyond a lower edge of the mount facing away from the printed circuit board, wherein a sensor element for temperature detection is placed on an end of the sensor printed circuit board facing away from the printed circuit board.
    Type: Application
    Filed: February 3, 2023
    Publication date: August 10, 2023
    Applicant: ZF Friedrichshafen AG
    Inventors: Pengshuai WANG, Michael Kohr, Philipp Rau, Hans-Joerg Hahn
  • Publication number: 20230246544
    Abstract: A power module for supplying electricity to an electric axle drive in an electric vehicle and/or hybrid vehicle may include numerous semiconductor switches for receiving an input current and generating an output current on the basis of the received input current by switching the semiconductor switches, where the semiconductor switches each have a positive current electrode, negative current electrode, and a control electrode, where numerous signal pins are each conductively connected to one of the electrodes, where at least one of the signal pins extends vertically, at least in part, between the electrode connected thereto and a driver.
    Type: Application
    Filed: February 1, 2023
    Publication date: August 3, 2023
    Applicant: ZF Friedrichshafen AG
    Inventors: Pengshuai Wang, Michael Kohr
  • Patent number: 11626813
    Abstract: The invention relates to a half bridge module in a traction inverter for a power electronics unit in an electric or hybrid vehicle, comprising a substrate, semiconductor switching elements on a first side of the substrate, power connections, to which power lines that conduct electrical traction energy are connected, signal connections, to which signal lines are connected for switching the semiconductor switching elements, and a casting compound, which encompasses the substrate and the semiconductor switching elements on the first side of the substrate, wherein the power connections and the signal connections are accessed from the first side of the substrate, such that the power connections and the signal connections extend through the casting compound, seen from the first side of the substrate, and are located within a base area spanning the substrate, seen from the direction they pass through the casting compound.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 11, 2023
    Assignee: ZF Friedrichshafen AG
    Inventors: Manuel Raimann, Michael Kohr, Marcus Berner
  • Publication number: 20230098335
    Abstract: An inverter includes a DC input, a link capacitor including a plurality of input contacts fitted to a capacitor housing, a plurality of half-bridges, each including semiconductor switching elements for converting the DC current into an AC current having a plurality of phase currents, wherein the half-bridges are arranged in a row along a transverse direction to the inverter, a positive DC conductor rail and a negative DC conductor rail for the infeed of DC current to the half-bridges, wherein the positive and/or negative DC conductor rail extends in a transverse direction to the inverter over the row of half-bridges, such that the width of the positive and/or negative DC conductor rail extends to the width of the row of half-bridges, an AC conductor rail assembly for the output of AC current to the electric drive, and a cooler for cooling the half-bridges.
    Type: Application
    Filed: September 30, 2022
    Publication date: March 30, 2023
    Applicant: ZF Friedrichshafen AG
    Inventors: Ivonne TRENZ, Michael KOHR, Florian PAHN, Pengshuai WANG, Manuel RAIMANN, Philipp RAU, Jonas ZELLER, Gerhard MÜLLER
  • Publication number: 20220328988
    Abstract: A power converter, for a vehicle that is at least partially electrically powered, has a first printed circuit board with DC link capacitors, a circuit breaker group for each alternating current phase, and terminals for alternating current busbars and direct current busbars. A second printed circuit board has a control apparatus for actuating the circuit breaker groups. Also, it has a respective signal pin carrier for the respective circuit breaker group. The signal pin carrier connects the first and the second printed circuit board. Thus, signals between the first and the second printed circuit board can be transmitted via the respective signal pin carrier. The signal pin carrier has six signal pins that are arranged on a plastic carrier.
    Type: Application
    Filed: September 10, 2020
    Publication date: October 13, 2022
    Inventors: Pengshuai WANG, Thomas BOSCH, Michael KOHR, Matthias BERGFELD
  • Publication number: 20220140724
    Abstract: A power module for an electric axle drive may include a plurality of semiconductor switching elements, where the semiconductor switching elements are attached to a substrate. The power module may also include a control unit electrically connected to the plurality of semiconductor switching elements, where the plurality of semiconductor switching elements includes a first set of semiconductor switching elements dedicated to the electric axle drive. The plurality of semiconductor switching elements may also include a second set of second set of semiconductor switching elements dedicated to a transmission connected to the electric axle drive.
    Type: Application
    Filed: October 28, 2021
    Publication date: May 5, 2022
    Applicant: ZF Friedrichshafen AG
    Inventors: Michael Kohr, Maxim Pereverzev, Wolfgang Scherm, Marco Igel, Pengshuai Wang, Roman Huff
  • Patent number: 11212907
    Abstract: A circuit board assembly has a circuit board and an electrical component embedded in a cured plastic layer, as well as a heat sink for cooling the component. The component is placed with a first side on a surface of the circuit board facing the heat sink and in electrical contact with the circuit board, and is located in a window in the cured plastic layer. Moreover, the component is materially bonded to a surface of the heat sink facing the circuit board at a second side lying opposite the first side, in particular through soldering or sintering. The plastic layer is injected and cured between the surface of the circuit board and the surface of the heat sink. In the production process, the material is melted by the heat at the same time as the injection, such that the component is materially bonded to the heat sink.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: December 28, 2021
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Manuel Schwab, Michael Kohr, Michael Bergier, Thomas Hofmann
  • Publication number: 20210194385
    Abstract: The invention relates to a half bridge module in a traction inverter for a power electronics unit in an electric or hybrid vehicle, comprising a substrate, semiconductor switching elements on a first side of the substrate, power connections, to which power lines that conduct electrical traction energy can be connected, signal connections, to which signal lines can be connected for switching the semiconductor switching elements, and a casting compound, which encompasses the substrate and the semiconductor switching elements on the first side of the substrate, wherein the power connections and the signal connections can all be accessed from the first side of the substrate, such that the power connections and the signal connections extend through the casting compound, seen from the first side of the substrate, and are located within a base area spanning the substrate, seen from the direction they pass through the casting compound.
    Type: Application
    Filed: December 16, 2020
    Publication date: June 24, 2021
    Applicant: ZF Friedrichshafen AG
    Inventors: Manuel RAIMANN, Michael KOHR, Marcus BERNER
  • Patent number: 10748720
    Abstract: A connecting device may electrically connect an electric motor to an electronic switchgear unit. The connecting device may include a bus bar that has a first interface, a second interface, and a linear section therebetween, where the first interface is bowed in a direction at least partially transverse to a longitudinal direction of the linear section of the bus bar. The first interface may be configured to electrically connect to at least one line that conducts a drive current of the electric motor through a crimp connection, and the second interface may be configured to electrically connect to the electronic switchgear unit.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 18, 2020
    Assignee: ZF Friedrichshafen AG
    Inventors: Heinz Reichert, Michael Kohr, Nicolas Schreibmüller, Christian Brückner
  • Publication number: 20190335576
    Abstract: The invention relates to a circuit board assembly and a production method therefor, as well as an inverter with such a circuit board assembly. The circuit board assembly has a circuit board (1) and an electrical component (3) embedded in a cured plastic layer (2), as well as a heat sink (4) for cooling the component (3). The component (3) is placed with a first side (3A) on a surface of the circuit board (1) facing the heat sink (4) and in electrical contact with the circuit board (1), and is located in a window (2A) in the cured plastic layer (2). Moreover, the component (3) is materially bonded to a surface of the heat sink (4) facing the circuit board (1) at a second side (3B) lying opposite the first side (3A), in particular through soldering or sintering. The plastic layer (2) is injected and cured between the surface of the circuit board (1) and the surface of the heat sink (4).
    Type: Application
    Filed: November 6, 2017
    Publication date: October 31, 2019
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Manuel Schwab, Michael Kohr, Michael Bergier, Thomas Hofmann
  • Publication number: 20190074147
    Abstract: A connecting device may electrically connect an electric motor to an electronic switchgear unit. The connecting device may include a bus bar that has a first interface, a second interface, and a linear section therebetween, where the first interface is bowed in a direction at least partially transverse to a longitudinal direction of the linear section of the bus bar. The first interface may be configured to electrically connect to at least one line that conducts a drive current of the electric motor through a crimp connection, and the second interface may be configured to electrically connect to the electronic switchgear unit.
    Type: Application
    Filed: August 30, 2018
    Publication date: March 7, 2019
    Applicant: ZF Friedrichshafen AG
    Inventors: Heinz Reichert, Michael Kohr, Nicolas Schreibmüller, Christian Brückner