Patents by Inventor Franz Pfeilschifter

Franz Pfeilschifter 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: 20220212553
    Abstract: A vehicle on-board electrical system having an AC voltage charging connection, a rechargeable traction battery, which is designed as a high-voltage rechargeable battery, and a power factor correction filter. The power factor correction filter connects the AC voltage charging connection directly to the rechargeable traction battery. The operating voltage range of the rechargeable traction battery is within the output voltage range of the power factor correction filter.
    Type: Application
    Filed: March 23, 2022
    Publication date: July 7, 2022
    Applicant: Vitesco Technologies GMBH
    Inventors: Gabriel Marzahn, Martin Götzenberger, Manuel Brunner, Franz Pfeilschifter
  • Patent number: 11351869
    Abstract: An alternating current (AC) charging device for a motor vehicle may include: a neutral conductor; a phase conductor; a rectifier; a smoothing capacitor electrically connected to the rectifier; a mains connection; a precharge circuit arranged between the mains connection and the smoothing capacitor, the precharge circuit precharging the smoothing capacitor; and a second phase conductor electrically connected to the phase conductor by a cross-connection line. The neutral conductor and the phase conductor are connected to the rectifier. The precharge circuit is disposed in the neutral conductor.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 7, 2022
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Franz Pfeilschifter, Martin Götzenberger, Klaus Mühlbauer
  • Patent number: 11332028
    Abstract: An alternating voltage charging device for a vehicle is equipped with a rectifier, a battery terminal, and at least one first DC link capacitor, which is provided between the rectifier and the battery terminal. The charging device includes a switch device, which connects at least one second DC link capacitor to the at least one first DC link capacitor. The switch device interconnects the DC link capacitors in parallel in a first switching state and in series in a second switching state. There is also described a method to be carried out by the charging device.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: May 17, 2022
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Goetzenberger
  • Patent number: 11285825
    Abstract: An AC charging device for a motor vehicle has a neutral conductor, at least one phase conductor, and at least one rectifier. The neutral conductor and the at least one phase conductor are connected to the rectifier, to which at least one smoothing capacitor is also connected. The AC charging device has a precharge circuit arranged between a mains connection and the at least one smoothing capacitor. The precharge circuit is designed to precharge the at least one smoothing capacitor. The precharge circuit has at least one transistor.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: March 29, 2022
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Goetzenberger, Klaus Muehlbauer
  • Patent number: 11277020
    Abstract: An AC charging device for a motor vehicle has a neutral conductor, at least one phase conductor, and at least one rectifier. The neutral conductor and the phase conductor are connected to the rectifier and the rectifier is furthermore electrically connected to at least one smoothing capacitor. The AC charging device includes a precharge circuit arranged between a mains connection of the AC charging device and the smoothing capacitor. The precharge circuit is designed to precharge the smoothing capacitor. The phase conductor, in a connection section, is connected to at least one further phase conductor of the AC charging device by way of a cross-connection line, which has a cross-connection switch for disconnecting the phase conductor and the further phase conductor. The precharge circuit is arranged between a mains connection of a first phase conductor of the phase conductors and the connection section.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: March 15, 2022
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Goetzenberger, Klaus Muehlbauer
  • Publication number: 20220041074
    Abstract: Various embodiments include a charging circuit for a vehicle-side electrical energy store comprising: an alternating current terminal; at least two smoothing capacitors; a configuration device; and a rectifier via which the alternating current terminal is connected to the configuration device. The configuration device connects the rectifier to the at least two smoothing capacitors and is configured to connect the smoothing capacitors to one another in a first parallel arrangement and a second series arrangement. The alternating current terminal comprises a neutral conductor terminal connected via a diode circuit to the configuration device.
    Type: Application
    Filed: September 17, 2019
    Publication date: February 10, 2022
    Applicant: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Götzenberger, Manuel Brunner
  • Publication number: 20220041075
    Abstract: Various embodiments of the teachings herein include a vehicle-side charging apparatus comprising: an AC voltage connection; a rectifier connected to the AC voltage connection; a first DC/DC converter and a second DC/DC converter; and a DC voltage connection. Each DC/DC converter includes a intermediate circuit capacitor and a switch unit. The rectifier is connected to the DC voltage connection via the DC/DC converters. There is a switch connecting the DC/DC converters in a switchable manner. In a first switching state the respective intermediate circuit capacitors and the respective switch units of the DC/DC converters are connected in parallel with one another and in a second switching state in series with one another. There is a third DC/DC converter connecting the rectifier to the DC voltage connection.
    Type: Application
    Filed: December 11, 2019
    Publication date: February 10, 2022
    Applicant: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Götzenberger, Harald Schmauss
  • Patent number: 11207993
    Abstract: A storage-battery charging device for a motor vehicle is configured to be arranged in the motor vehicle. The storage-battery charging device includes a first stage with a power factor correction filter, and a second stage with an inverter. The first stage is electrically connected to the second stage through an intermediate node, the intermediate node being directly electrically connected to a feed-in connection point for direct voltage. The feed-in connection point is designed for direct electrical coupling to a high-voltage vehicle electrical system of the motor vehicle.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: December 28, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Goetzenberger
  • Publication number: 20210380002
    Abstract: An on-board vehicle electrical system is provided with a rechargeable battery, an AC voltage connection and a DC voltage connection. The DC voltage connection is connected directly to the rechargeable battery via a connection point. The AC voltage connection is connected to the rechargeable battery via a rectifier and a first switch via the connection point. The rectifier is connected to the rechargeable battery via a DC-isolating DC/DC converter and a second switch. The second switch is connected to the rechargeable battery via the connection point. There is at least one consumer on-board electrical system branch, which includes a Cy capacitance and which is connected to the rechargeable battery via the second switch.
    Type: Application
    Filed: August 18, 2021
    Publication date: December 9, 2021
    Applicant: Vitesco Technologies GMBH
    Inventors: Franz Pfeilschifter, Martin Götzenberger
  • Publication number: 20210347271
    Abstract: Various embodiments of the teachings herein include a charging circuit for a vehicle-side electrical energy store comprising: an alternating current terminal; at least two smoothing capacitors; a configuration device; and a rectifier connecting the alternating current terminal to the configuration device. The configuration device connects the rectifier to the smoothing capacitors, and the configuration device is programmed to connect the smoothing capacitors to one another in a first parallel connection and a second series connection. The alternating current terminal comprises a neutral conductor terminal connected to the configuration device via a diode circuit. The configuration device comprises a first switch connecting the smoothing capacitors to one another in parallel when closed. The configuration device comprises a diode connecting the smoothing capacitors to one another in series when closed.
    Type: Application
    Filed: September 17, 2019
    Publication date: November 11, 2021
    Applicant: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Götzenberger, Manuel Brunner
  • Patent number: 11161424
    Abstract: A method and a vehicle electrical system having an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has first and second sides and is configured to transmit power between these sides. Two output terminals of the inverter are connected or connectable to the energy store on the first side of the inverter. At least two phase current terminals of the inverter are connected or connectable to the electrical machine on the second side of the inverter. At least one of the charging inputs of the vehicle electrical system is connectable to a respective inner motor phase of the electrical machine by a switching device controlled by a controller. The vehicle electrical system initially charges the electrical energy store with a first voltage, and then charges the electrical energy store with a second voltage, which second voltage is higher than the first voltage.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: November 2, 2021
    Inventors: Franz Pfeilschifter, Philip Brockerhoff, Martin Brüll, Matthias Töns, Edmund Schirmer, Paul-Markus Schweizer-Berberich
  • Publication number: 20210265855
    Abstract: A vehicle-side charging circuit includes an AC-voltage interface, a rectifier connected thereto and at least one first and one second DC-to-DC converter. The DC-to-DC converters are electrically isolating, and each have at least one intermediate circuit capacitor and at least one switch unit. The charging circuit also includes an on-board electrical system connection. The rectifier is connected to the on-board electrical system connection by way of the DC-to-DC converters. The charging circuit has a switch device which connects the DC-to-DC converters so as to be switchable between one another. In a first switching state, the switching device connects the two intermediate circuit capacitors and the switching units of the DC-to-DC converters in parallel and, in a second switching state, connects the intermediate circuit capacitors and the switch units in series.
    Type: Application
    Filed: May 23, 2019
    Publication date: August 26, 2021
    Inventors: Franz Pfeilschifter, Martin Goetzenberger, Manuel Brunner
  • Patent number: 11097626
    Abstract: A vehicle electrical system having an electrical energy store, a direct voltage converter and a direct current transmission connection is described. The direct current transmission connection is connected to the energy store via the direct voltage converter. The vehicle electrical system also has a bypass switch which connects the electrical energy store in a switchable fashion to the direct voltage transmission connection. In addition, a method, a charging system, a charging station and a further vehicle electrical system are described.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: August 24, 2021
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Franz Pfeilschifter, Philip Brockerhoff, Martin Brüll, Paul-Markus Schweizer-Berberich, Matthias Töns, Edmund Schirmer
  • Publication number: 20210245611
    Abstract: An alternating voltage charging device for a vehicle is equipped with a rectifier, a battery terminal, and at least one first DC link capacitor, which is provided between the rectifier and the battery terminal. The charging device includes a switch device, which connects at least one second DC link capacitor to the at least one first DC link capacitor. The switch device interconnects the DC link capacitors in parallel in a first switching state and in series in a second switching state. There is also described a method to be carried out by the charging device.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 12, 2021
    Inventors: Franz Pfeilschifter, Martin Goetzenberger
  • Patent number: 11072253
    Abstract: The disclosure relates to a power circuit for power supply in an electrically driven vehicle. The power circuit includes a direct voltage connection, an electrical traction drive, and a DC/AC converter. The converter includes an alternating voltage side connected to the traction drive. A DC/DC converter of the power circuit includes two converter sides. The first converter side is connected to a direct voltage side of the DC/AC converter via a coupling point. The direct voltage connection is likewise connected to the coupling point. The disclosure further relates to a stationary energy supply system designed to be complementary and to connect to the power circuit.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: July 27, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Brüll, Hans-Peter Feustel, Klaus Mühlbauer, Thomas Röhrl, Edmund Schirmer, Martin Spornraft, Matthias Töns
  • Patent number: 10994618
    Abstract: A vehicle electrical system is equipped with an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has a first and a second side and is configured to transmit power between these sides. The first side of the inverter is connected to the energy store via input current terminals of the inverter. The second side of the inverter is connected to the electrical machine via phase current terminals of the inverter. The inverter has at least two H-bridges. Each of the H-bridges bypasses the two sides of the inverter. The AC transmission terminal is connected to the second side of the inverter.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 4, 2021
    Inventors: Matthias Töns, Martin Brüll, Martin Ehrmann, Hans-Peter Feustel, Franz Pfeilschifter
  • Patent number: 10953751
    Abstract: A vehicle-side circuit for supplying power in an electrically driven vehicle is provided. The power circuit includes an external AC voltage terminal; at least one DC/AC converter having an AC voltage side; and an electrical machine having a plurality of windings, each of which has a first tapping. The electrical machine is connected to the AC voltage side of the DC/AC converter. A switching device is connected to the plurality of windings and to a signal shaping filter having a plurality of first capacitors. The signal shaping filter is connected between the DC/AC converter and an external AC terminal. The switching device may interconnect the windings within the electrical machine or may connect the first tappings of the plurality of windings within the signal shaping filter to the plurality of first capacitors to form an at least third-order low-pass filter.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 23, 2021
    Assignee: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Brüll, Wilhelm Hackmann, Klaus Mühlbauer, Martin Spornraft, Matthias Töns
  • Publication number: 20210008984
    Abstract: AC charging device for a motor vehicle may include: a neutral conductor; a phase conductor; a rectifier; a smoothing capacitor electrically connected to the rectifier; a mains connection; a precharge circuit arranged between the mains connection and the smoothing capacitor, the precharge circuit precharging the smoothing capacitor; and a second phase conductor electrically connected to the phase conductor by a cross-connection line. The neutral conductor and the phase conductor are connected to the rectifier. The precharge circuit is disposed in the neutral conductor.
    Type: Application
    Filed: February 26, 2019
    Publication date: January 14, 2021
    Applicant: Vitesco Technologies GmbH
    Inventors: Franz Pfeilschifter, Martin Götzenberger, Klaus Mühlbauer
  • Patent number: 10787088
    Abstract: The vehicle electrical system described includes an inverter, an electrical energy store, an electrical machine and a DC transmission terminal. The inverter is connected to the energy store via input current terminals. At least two phase current terminals of the inverter are connected to the electrical machine. The inverter has at least two H-bridges. The DC transmission terminal has a positive rail connected to at least one of the phase current terminals.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: September 29, 2020
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Martin Brüll, Martin Ehrmann, Hans-Peter Feustel, Franz Pfeilschifter, Matthias Töns
  • Patent number: 10763690
    Abstract: A vehicle-side charging circuit for a vehicle with electric drive. The charging circuit comprises an AC connector, a controlled rectifier which is connected to the AC connector, an electric machine with at least one winding, a current converter which is connected to the electric machine, and an energy-storage-device connector. The at least one winding of the electric machine is coupled in series between the rectifier and the current converter. In an inverter mode the current converter is fed from the energy-storage device, and in a charging mode the current converter is from an external energy source via at least one series-connected winding of the electric machine and charges the electrical energy-storage device.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: September 1, 2020
    Assignee: Continental Automotive GmbH
    Inventors: Franz Pfeilschifter, Klaus Muehlbauer, Martin Spornraft, Matthias Toens