Patents by Inventor Gerhard WOELFL

Gerhard WOELFL 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: 11852543
    Abstract: A method determines a temperature of at least one electronic switching element by way of a temperature measuring circuit. A first electronic switching element in an electronic module is first of all turned off and a second electronic switching element in the electronic module is turned on. A voltage measuring unit is then coupled to the electronic module and a voltage drop across the second electronic switching element is measured. A current intensity of a current flowing through the second electronic switching element is also determined and the temperature of the second electronic switching element is determined with the inclusion of the measured voltage drop and the determined current intensity. An electronic assembly for determining a temperature of at least one electronic switching element is also described.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: December 26, 2023
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Gerhard Woelfl
  • Patent number: 11656288
    Abstract: A method for monitoring battery cells of a primary on-board electrical system battery of a motor vehicle by galvanostatic impedance spectroscopy is provided. An AC signal having alternating currents of different frequencies is impressed onto the battery cells as an excitation signal, cell voltage signals of the battery cells are detected as frequency-dependent response signals to the excitation signal, impedance spectra of the battery cells are determined depending on the excitation signal and the response signals, and the primary on-board electrical system battery is divided into at least two subsections each having at least one battery cell in order to provide the excitation signal. The primary on-board electrical system battery is electrically connected to a secondary on-board electrical system battery of the motor vehicle.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: May 23, 2023
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Jose Lopez De Arroyabe, Gerhard Woelfl
  • Publication number: 20230037158
    Abstract: A semiconductor module includes a base member; a circuit board provided on the base member and including a positive electrode pad, a negative electrode pad, and semiconductor devices; a housing formed in a frame shape and attached to the base member; a first electrode plate electrically coupled to the positive electrode pad and having a first flat plate portion; a second electrode plate electrically coupled to the negative electrode pad and having a second flat plate portion; and a first insulating member. The first flat plate portion and the second flat plate portion are disposed in parallel from the inside to outside of the housing. The first flat plate portion has a first external connection terminal situated outside the housing, and the second flat plate portion has a second external connection terminal situated outside the housing. The first insulating member is sandwiched between the first and the second external connection terminals.
    Type: Application
    Filed: January 16, 2020
    Publication date: February 2, 2023
    Inventors: Christina LEGEN, Gerhard WOELFL, Hirotaka OOMORI, Masaki TANIYAMA, Satoshi HATSUKAWA, Takashi TSUNO
  • Publication number: 20220268846
    Abstract: A method for monitoring battery cells of a primary on-board electrical system battery of a motor vehicle by galvanostatic impedance spectroscopy is provided. An AC signal having alternating currents of different frequencies is impressed onto the battery cells as an excitation signal, cell voltage signals of the battery cells are detected as frequency-dependent response signals to the excitation signal, impedance spectra of the battery cells are determined depending on the excitation signal and the response signals, and the primary on-board electrical system battery is divided into at least two subsections each having at least one battery cell in order to provide the excitation signal. The primary on-board electrical system battery is electrically connected to a secondary on-board electrical system battery of the motor vehicle.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 25, 2022
    Inventors: Jose LOPEZ DE ARROYABE, Gerhard WOELFL
  • Publication number: 20190323900
    Abstract: A method determines a temperature of at least one electronic switching element by way of a temperature measuring circuit. A first electronic switching element in an electronic module is first of all turned off and a second electronic switching element in the electronic module is turned on. A voltage measuring unit is then coupled to the electronic module and a voltage drop across the second electronic switching element is measured. A current intensity of a current flowing through the second electronic switching element is also determined and the temperature of the second electronic switching element is determined with the inclusion of the measured voltage drop and the determined current intensity. An electronic assembly for determining a temperature of at least one electronic switching element is also described.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Inventor: Gerhard WOELFL
  • Patent number: 9399977
    Abstract: A system and method are provided for starting an internal-combustion engine arranged in a vehicle equipped with an electric machine that at least temporarily drives the internal-combustion engine and a first electrical energy storage unit. An adjusting unit is provided by which the electric machine is connectable with the first storage unit. The adjusting unit is configured to detect at least one defined internal-combustion engine operating state and/or at least one defined vehicle operating state and, at least as a function of the detected internal-combustion engine operating state and/or the detected vehicle operating state, for adjusting an electric quantity which determines an electric power drawn from the first storage unit by the electric machine when driving the internal-combustion engine, or for itself adjusting the drawn electric power.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: July 26, 2016
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gerhard Woelfl, Daniel Findeisen, Michael Daurer, Hartmut Proebstle, Sherif Mahmoud, Rupert Neudecker
  • Publication number: 20140048031
    Abstract: A system and method are provided for starting an internal-combustion engine arranged in a vehicle equipped with an electric machine that at least temporarily drives the internal-combustion engine and a first electrical energy storage unit. An adjusting unit is provided by which the electric machine is connectable with the first storage unit. The adjusting unit is configured to detect at least one defined internal-combustion engine operating state and/or at least one defined vehicle operating state and, at least as a function of the detected internal-combustion engine operating state and/or the detected vehicle operating state, for adjusting an electric quantity which determines an electric power drawn from the first storage unit by the electric machine when driving the internal-combustion engine, or for itself adjusting the drawn electric power.
    Type: Application
    Filed: October 21, 2013
    Publication date: February 20, 2014
    Applicant: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Gerhard WOELFL, Daniel FINDEISEN, Michael DAURER, Hartmut PROEBSTLE, Sherif MAHMOUD, Rupert NEUDECKER