Patents by Inventor Fabian FOGELBERG

Fabian FOGELBERG 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: 11535108
    Abstract: A method for reactivation of an electrical system of a vehicle comprising a first electrical system operating at a first lower voltage and a second electrical system operating at a second higher voltage, comprising: detecting a fault or a crash situation in the second electrical system; disconnecting a power source of the second electrical system; determining the fault of the second electrical system is no longer present or that the crash situation is resolved; reconnecting the power source to the second electrical system and increasing the voltage of the second electrical system from zero to an intermediate voltage lower than the second voltage; and if a detected current in the second electrical system is higher than a current threshold value; or if a detected voltage of the first electrical system is higher than a voltage threshold value; reducing the voltage of the second electrical system to zero.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: December 27, 2022
    Assignee: Volvo Car Corporation
    Inventors: Fabian Fogelberg, Axel Vänerhav
  • Publication number: 20220216705
    Abstract: A method for operating a battery system with a plurality of cells, a battery system, a vehicle including such a battery system and a computer program element for operating such a battery system. The method for operating a battery system includes monitoring a state of health of each of the plurality of cells, detecting at least one malfunctioning cell, analysing the state of health of the malfunctioning cell, limiting a discharge power over a time period if the malfunctioning cell has a worst state of health in the battery system or limiting a charge power over a time period if the malfunctioning cell has a best state of health in the battery system, and reducing a minimum state of charge of the battery system over the time period.
    Type: Application
    Filed: December 23, 2021
    Publication date: July 7, 2022
    Inventors: Fabian Fogelberg, Nicklas Leuchovius, Annika Ahlberg Tidblad, Alma Ciric, Sören Hansen
  • Patent number: 10889203
    Abstract: A power supply system for a vehicle, the system including: a battery pack including at least two parallel strings of battery cells, each string forming a battery having a first output voltage; a switch mechanism configured to connect one of the at least two batteries to a first battery pack output terminal, wherein the first battery pack output terminal is connected to a first power consumer; and a multichannel DC/DC converter having an input terminal connected to the first battery pack output terminal, the multichannel DC/DC converter including a plurality of outputs, wherein at least one of the plurality of outputs is configured to provide a second voltage, the second voltage being lower than the first voltage, and wherein the at least one output of the multichannel DC/DC converter is connected to a second power consumer.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: January 12, 2021
    Assignee: Volvo Car Corporation
    Inventors: Axel Vanerhav, Fabian Fogelberg
  • Publication number: 20200172086
    Abstract: A method for reactivation of an electrical system of a vehicle comprising a first electrical system operating at a first lower voltage and a second electrical system operating at a second higher voltage, comprising: detecting a fault or a crash situation in the second electrical system; disconnecting a power source of the second electrical system; determining the fault of the second electrical system is no longer present or that the crash situation is resolved; reconnecting the power source to the second electrical system and increasing the voltage of the second electrical system from zero to an intermediate voltage lower than the second voltage; and if a detected current in the second electrical system is higher than a current threshold value; or if a detected voltage of the first electrical system is higher than a voltage threshold value; reducing the voltage of the second electrical system to zero.
    Type: Application
    Filed: November 6, 2019
    Publication date: June 4, 2020
    Inventors: Fabian FOGELBERG, Axel VÄNERHAV
  • Publication number: 20190291601
    Abstract: A power supply system for a vehicle, the system including: a battery pack including at least two parallel strings of battery cells, each string forming a battery having a first output voltage; a switch mechanism configured to connect one of the at least two batteries to a first battery pack output terminal, wherein the first battery pack output terminal is connected to a first power consumer; and a multichannel DC/DC converter having an input terminal connected to the first battery pack output terminal, the multichannel DC/DC converter including a plurality of outputs, wherein at least one of the plurality of outputs is configured to provide a second voltage, the second voltage being lower than the first voltage, and wherein the at least one output of the multichannel DC/DC converter is connected to a second power consumer.
    Type: Application
    Filed: March 13, 2019
    Publication date: September 26, 2019
    Inventors: Axel VANERHAV, Fabian FOGELBERG
  • Patent number: 10023066
    Abstract: A method for determining a status of a vehicle battery includes determining an initial temperature and an initial state of charge of the battery, determining a current threshold value based on the initial temperature and the initial state of charge of the battery, starting the vehicle engine, charging the battery for a predetermined charging period t1, measuring two charging currents, I1 and I2, to the battery at two predetermined points in time during the charging period t1, determining an expected current value at a time t3=t1+t2 based on the measured charging currents, comparing the expected current value with the current threshold value, and determining the battery is faulty if the expected current value is lower than the current threshold value.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: July 17, 2018
    Assignee: Volvo Car Corporation
    Inventors: Torbjorn Larsson, Alexander Engstrom, Linus Franzen, Mats Thorngren, Fabian Fogelberg, Pelle Thorson, Petter Almhagen, Emil Wall, Daniel Midholm
  • Publication number: 20170080819
    Abstract: A method for determining a status of a vehicle battery includes determining an initial temperature and an initial state of charge of the battery, determining a current threshold value based on the initial temperature and the initial state of charge of the battery, starting the vehicle engine, charging the battery for a predetermined charging period t1, measuring two charging currents, I1 and I2, to the battery at two predetermined points in time during the charging period t1, determining an expected current value at a time t3=t1+t2 based on the measured charging currents, comparing the expected current value with the current threshold value, and determining the battery is faulty if the expected current value is lower than the current threshold value.
    Type: Application
    Filed: September 12, 2016
    Publication date: March 23, 2017
    Applicant: VOLVO CAR CORPORATION
    Inventors: Torbjorn LARSSON, Alexander ENGSTROM, Linus FRANZEN, Mats THORNGREN, Fabian FOGELBERG, Pelle THORSON, Petter ALMHAGEN, Emil WALL, Daniel MIDHOLM