Patents by Inventor Viktor NYMAN

Viktor NYMAN 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).

  • Method, controller and circuit for operating a converter within an operating range
    Patent number: 12771225
    Abstract: The present application relates to a method of operating a converter within an operating range, the converter being comprised in an electrical circuit for a vehicle, which electrical circuit comprises at least one load and at least one battery pack, comprising the steps of determining the operating range by determining the relation between output current from the converter with rapid current drop in the electrical circuit, which rapid current drop is based on parameters from the at least one load and the at least one battery pack, and regulating the voltage from the converter for controlling the output current within the determined operating range.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: October 20, 2026
    Assignee: Traton AB
    Inventors: Gunnar Ledfelt, Lukas Rydén, Viktor Nyman
  • METHOD, CONTROLLER AND CIRCUIT FOR OPERATING A CONVERTER WITHIN AN OPERATING RANGE
    Publication number: 20250364884
    Abstract: The present application relates to a method of operating a converter within an operating range, the converter being comprised in an electrical circuit for a vehicle, which electrical circuit comprises at least one load and at least one battery pack, comprising the steps of determining the operating range by determining the relation between output current from the converter with rapid current drop in the electrical circuit, which rapid current drop is based on parameters from the at least one load and the at least one battery pack, and regulating the voltage from the converter for controlling the output current within the determined operating range.
    Type: Application
    Filed: June 21, 2023
    Publication date: November 27, 2025
    Applicant: Traton AB
    Inventors: Gunnar LEDFELT, Lukas RYDÉN, Viktor NYMAN
  • METHOD FOR CHARGING A MAINTENANCE BATTERY BY A PROPULSION BATTERY.
    Publication number: 20250187493
    Abstract: The application relates to charging a maintenance battery pack of a vehicle, which also comprises a propulsion battery pack, comprising, when the vehicle is inactive: providing a predetermined threshold SOC/SOH1Threshold value when charging is activated and a predetermined threshold SOH2Threshold value when charging is terminated; continually measuring maintenance battery pack voltage, current, and temperature; calculating State Of Charge SOC, as number of ampere hours possible to discharge before the maintenance battery pack is discharged; calculating State of Health SOH, as number of ampere hours possible to discharge if the maintenance battery pack was fully charged; calculating a battery charge quota SOC/SOH; comparing SOC/SOH with the SOC/SOH1Threshold value; if SOC/SOH<SOC/SOH1Threshold, checking the condition of the propulsion battery pack, and if condition is satisfactory, activating the propulsion battery pack to charge the maintenance battery, comparing SOC/SOH with the SOC/SOH2Threshold value; a
    Type: Application
    Filed: March 22, 2023
    Publication date: June 12, 2025
    Applicant: Scania CV AB
    Inventors: Per NORDVALL, Gunnar LEDFELT, Viktor NYMAN, Börje NILSSON