Patents by Inventor Akshay Misra

Akshay Misra 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).

  • Multi-cell AC impedance measurement system
    Patent number: 11543461
    Abstract: A method for measuring a complex impedance of a plurality of battery cells in a battery pack comprises controlling an excitation current through the plurality of battery cells in the battery pack; receiving, in a single common measurement circuit, a plurality of voltage signals corresponding to the plurality of battery cells; measuring the excitation current; and calculating a complex impedance of each of the battery cells in the plurality of battery cells based on the plurality of voltage signals and the measured excitation current in a single measurement cycle using either one analog-to-digital converter (ADC) per battery cell or two matched ADCs per battery cell.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: January 3, 2023
    Assignee: Infineon Technologies AG
    Inventors: Andreas Berger, Klaus Hoermaier, Guenter Hofer, Stefano Marsili, Akshay Misra, Matthias Rose, Christian Winkler
  • Device and method for battery impedance measurement
    Patent number: 11372054
    Abstract: A device for battery impedance measurement includes a switched capacitor network, a controller configured to operate the switched capacitor network to cause an alternating current to flow between a battery and an energy storage; and measurement circuitry configured to measure the alternating current flowing to or from the battery and a voltage across the battery.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: June 28, 2022
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Stefano Marsili, Klaus Hoermaier, Akshay Misra, Filippo Rosetti
  • MULTI-CELL AC IMPEDANCE MEASUREMENT SYSTEM
    Publication number: 20210223327
    Abstract: A method for measuring a complex impedance of a plurality of battery cells in a battery pack comprises controlling an excitation current through the plurality of battery cells in the battery pack; receiving, in a single common measurement circuit, a plurality of voltage signals corresponding to the plurality of battery cells; measuring the excitation current; and calculating a complex impedance of each of the battery cells in the plurality of battery cells based on the plurality of voltage signals and the measured excitation current in a single measurement cycle using either one analog-to-digital converter (ADC) per battery cell or two matched ADCs per battery cell.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 22, 2021
    Inventors: Andreas Berger, Klaus Hoermaier, Guenter Hofer, Stefano Marsili, Akshay Misra, Matthias Rose, Christian Winkler
  • Device and Method for Battery Impedance Measurement
    Publication number: 20200132781
    Abstract: Devices and methods for impedance measurements are provided. A switched capacitor network is operated to cause an alternating current to flow between a battery and an energy storage, and the alternating current and a voltage across the battery are measured.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 30, 2020
    Inventors: Stefano Marsili, Klaus Hoermaier, Akshay Misra, Filippo Rosetti