Patents by Inventor Nathan Biesterfeld

Nathan Biesterfeld 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).

  • Charging EV battery using parallel buck and boost converters
    Patent number: 12139039
    Abstract: Controlling a charging current while transferring energy from a source battery to a target battery in an electric vehicle (EV) includes operating, by control circuitry, a buck converter at a fixed switching frequency to transfer power from the source battery to the target battery, in a first operational mode; in response to detecting a first trigger event, transitioning from the first operational mode to a second operational mode to operate the buck converter at a variable switching frequency; and in response to detecting a second trigger event, transitioning to a third operational mode to activate a boost converter coupled to the source battery and the target battery.
    Type: Grant
    Filed: May 9, 2023
    Date of Patent: November 12, 2024
    Assignee: SPEED CHARGE, LLC
    Inventors: Aaron Rogers, Nathan Biesterfeld, Nikola Milivojevic
  • Charging EV Battery Using Parallel Buck and Boost Converters
    Publication number: 20240025296
    Abstract: Controlling a charging current while transferring energy from a source battery to a target battery in an electric vehicle (EV) includes operating, by control circuitry, a buck converter at a fixed switching frequency to transfer power from the source battery to the target battery, in a first operational mode; in response to detecting a first trigger event, transitioning from the first operational mode to a second operational mode to operate the buck converter at a variable switching frequency; and in response to detecting a second trigger event, transitioning to a third operational mode to activate a boost converter coupled to the source battery and the target battery.
    Type: Application
    Filed: May 9, 2023
    Publication date: January 25, 2024
    Inventors: Aaron Rogers, Nathan Biesterfeld, Nikola Milivojevic
  • Charging EV battery using parallel buck and boost converters
    Patent number: 11642981
    Abstract: Controlling a charging current while transferring energy from a source battery to a target battery in an electric vehicle (EV) includes operating, by control circuitry, a buck converter at a fixed switching frequency to transfer power from the source battery to the target battery, in a first operational mode; in response to detecting a first trigger event, transitioning from the first operational mode to a second operational mode to operate the buck converter at a variable switching frequency; and in response to detecting a second trigger event, transitioning to a third operational mode to activate a boost converter coupled to the source battery and the target battery.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: May 9, 2023
    Assignee: FREEWIRE TECHNOLOGIES, INC.
    Inventors: Aaron Rogers, Nathan Biesterfeld, Nikola Milivojevic