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).
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Patent number: 11988281Abstract: 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: GrantFiled: February 21, 2022Date of Patent: May 21, 2024Assignee: ZF Friedrichshafen AGInventors: Tobias Kohr, Michael Sohler, Franz Brugger, Bernd Haegele, Patrick Ledig
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Publication number: 20240029959Abstract: 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: ApplicationFiled: July 19, 2023Publication date: January 25, 2024Applicant: ZF Friedrichshafen AGInventors: Fabian Döllinger, Michael Kohr, Ivonne Trenz, Pengshuai Wang, Jonas Zeller
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Publication number: 20240030692Abstract: 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: ApplicationFiled: July 19, 2023Publication date: January 25, 2024Applicant: ZF Friedrichshafen AGInventors: Jonas Zeller, Michael Kohr, Pengshuai Wang
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Publication number: 20230249531Abstract: 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: ApplicationFiled: February 8, 2023Publication date: August 10, 2023Inventors: Fabian RÜGER, Oliver BAYER, Steffen TREUTLEIN, Gerhard MÜLLER, Michael KOHR, Thomas SCHUPP, Niklas SCHWARZMANN
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Publication number: 20230254976Abstract: 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: ApplicationFiled: February 3, 2023Publication date: August 10, 2023Applicant: ZF Friedrichshafen AGInventors: Pengshuai WANG, Michael Kohr, Philipp Rau, Hans-Joerg Hahn
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Publication number: 20230246544Abstract: 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: ApplicationFiled: February 1, 2023Publication date: August 3, 2023Applicant: ZF Friedrichshafen AGInventors: Pengshuai Wang, Michael Kohr
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Patent number: 11626813Abstract: 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: GrantFiled: December 16, 2020Date of Patent: April 11, 2023Assignee: ZF Friedrichshafen AGInventors: Manuel Raimann, Michael Kohr, Marcus Berner
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Publication number: 20230098335Abstract: 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: ApplicationFiled: September 30, 2022Publication date: March 30, 2023Applicant: ZF Friedrichshafen AGInventors: Ivonne TRENZ, Michael KOHR, Florian PAHN, Pengshuai WANG, Manuel RAIMANN, Philipp RAU, Jonas ZELLER, Gerhard MÜLLER
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Publication number: 20220328988Abstract: 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: ApplicationFiled: September 10, 2020Publication date: October 13, 2022Inventors: Pengshuai WANG, Thomas BOSCH, Michael KOHR, Matthias BERGFELD
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Publication number: 20220140724Abstract: 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: ApplicationFiled: October 28, 2021Publication date: May 5, 2022Applicant: ZF Friedrichshafen AGInventors: Michael Kohr, Maxim Pereverzev, Wolfgang Scherm, Marco Igel, Pengshuai Wang, Roman Huff
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Patent number: 11212907Abstract: 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: GrantFiled: November 6, 2017Date of Patent: December 28, 2021Assignee: ZF FRIEDRICHSHAFEN AGInventors: Manuel Schwab, Michael Kohr, Michael Bergier, Thomas Hofmann
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Publication number: 20210194385Abstract: 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: ApplicationFiled: December 16, 2020Publication date: June 24, 2021Applicant: ZF Friedrichshafen AGInventors: Manuel RAIMANN, Michael KOHR, Marcus BERNER
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Patent number: 10748720Abstract: 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: GrantFiled: August 30, 2018Date of Patent: August 18, 2020Assignee: ZF Friedrichshafen AGInventors: Heinz Reichert, Michael Kohr, Nicolas Schreibmüller, Christian Brückner
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Publication number: 20190335576Abstract: 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: ApplicationFiled: November 6, 2017Publication date: October 31, 2019Applicant: ZF FRIEDRICHSHAFEN AGInventors: Manuel Schwab, Michael Kohr, Michael Bergier, Thomas Hofmann
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Publication number: 20190074147Abstract: 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: ApplicationFiled: August 30, 2018Publication date: March 7, 2019Applicant: ZF Friedrichshafen AGInventors: Heinz Reichert, Michael Kohr, Nicolas Schreibmüller, Christian Brückner