Patents by Inventor Ayman Ayad

Ayman Ayad 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).

  • Publication number: 20240120799
    Abstract: An electric vehicle drive circuit has a first inverter with a first DC port and a second inverter with a second DC port. The first DC port and the second DC port are connected in a series connection. The series connection of the first and the second DC port is connected to a battery interface. The first and the second inverters each have a multiphase AC port. The multiphase AC ports of the first and the second inverters form a multiphase machine interface.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 11, 2024
    Inventor: Ayman Ayad
  • Publication number: 20230208151
    Abstract: Various embodiments of the teachings herein include a battery unit comprising a string of battery modules in series. Each battery module includes a plurality of battery cells in series. Each battery module comprises a respective balancing circuit and a respective power electronics unit with a first DC/DC converter. The respective battery modules are connected in series via the respective power electronics unit. In each battery module, the first DC/DC converter comprises: an input port with two input terminals connected to the battery cells; an output port with two output terminals providing an output voltage; and a power supply port receiving power for the first DC/DC converter from the balancing circuit. The first DC/DC converter sets the output voltage of the battery module to a predetermined value. The balancing circuit extracts energy from a selected battery cells and provides it to the first DC/DC converter or the power electronics unit.
    Type: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Applicant: Vitesco Technologies GmbH
    Inventor: Ayman Ayad
  • Publication number: 20230140732
    Abstract: Method for controlling a battery system that includes a battery with at least one string of battery modules connected in series. Each battery module including a number of battery cells connected in parallel and/or in series. At least a number of battery modules including a power electronics unit connected in series via their respective power electronics unit. The power electronics unit having a DCDC converter operable at least in buck mode, boost mode, and bypass mode. The method includes specifying a DC link voltage for the battery; specifying a first distribution of the set DC link voltage for all modules; determining a state of charge and/or a temperature for all modules; determining a deviation of the state of charge and/or of the temperature of each module from an average value; specifying a second distribution of the set DC link voltage. The set voltage for each module is corrected depending on deviation of state of charge and/or of temperature of each module from the average value.
    Type: Application
    Filed: November 1, 2022
    Publication date: May 4, 2023
    Inventor: Ayman Ayad
  • Publication number: 20230133126
    Abstract: A battery system including a number of first battery modules each including a number of battery cells, and a number of second battery modules each including a number of battery cells. Each second battery module includes a power electronics unit having a DC/DC converter. The first and second battery modules are connected in series. The first battery modules are connected directly in series and the second battery modules are connected via their power electronics units.
    Type: Application
    Filed: November 1, 2022
    Publication date: May 4, 2023
    Inventor: Ayman Ayad