Patents by Inventor Dorothea KALIN

Dorothea KALIN 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 for determining the capacity of Li-ion cells with the aid of distinct points
    Patent number: 11714135
    Abstract: A method for determining the capacity of at least one lithium-ion cell, in particular of at least one high-voltage battery, during open circuit voltage aging, uses at least one distinct point in a voltage curve and/or in at least one open circuit voltage of the Li-ion cell.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: August 1, 2023
    Assignee: AUDI AG
    Inventors: Dorothea Kalin, Christian Röttinger
  • Method and control device for impedance-based determination of a state of charge of at least one battery cell and motor vehicle
    Patent number: 11604227
    Abstract: A method for determining a state of charge of at least one battery cell, having the following steps to enable an improved determination of the state of charge of a lithium iron phosphate cell: generating an alternating current pulse in a circuit connected to the at least one battery cell, determining an impedance of the at least one battery cell on the basis of the alternating current pulse and determining the state of charge by comparing the impedance to predefined map data, wherein a relationship between the impedance and the state of charge of the at least one battery cell is determined from the predefined map data.
    Type: Grant
    Filed: October 7, 2021
    Date of Patent: March 14, 2023
    Assignee: AUDI AG
    Inventors: Dorothea Kalin, Rolf Naumann, Christian Roettinger
  • METHOD AND CONTROL DEVICE FOR IMPEDANCE-BASED DETERMINATION OF A STATE OF CHARGE OF AT LEAST ONE BATTERY CELL AND MOTOR VEHICLE
    Publication number: 20220120816
    Abstract: A method for determining a state of charge of at least one battery cell, having the following steps to enable an improved determination of the state of charge of a lithium iron phosphate cell: generating an alternating current pulse in a circuit connected to the at least one battery cell, determining an impedance of the at least one battery cell on the basis of the alternating current pulse and determining the state of charge by comparing the impedance to predefined map data, wherein a relationship between the impedance and the state of charge of the at least one battery cell is determined from the predefined map data.
    Type: Application
    Filed: October 7, 2021
    Publication date: April 21, 2022
    Applicant: AUDI AG
    Inventors: Dorothea KALIN, Rolf NAUMANN, Christian ROETTINGER
  • METHOD FOR DETERMINING THE CAPACITY OF LI-ION CELLS WITH THE AID OF DISTINCT POINTS
    Publication number: 20220065938
    Abstract: A method for determining the capacity of at least one lithium-ion cell, in particular of at least one high-voltage battery, during open circuit voltage aging, uses at least one distinct point in a voltage curve and/or in at least one open circuit voltage of the Li-ion cell.
    Type: Application
    Filed: August 23, 2021
    Publication date: March 3, 2022
    Inventors: Dorothea KALIN, Christian RÖTTINGER