Patents by Inventor Chad A. Hartzog

Chad A. Hartzog 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: 20080164880
    Abstract: A method and system for measuring voltage of individual cells connected in series includes a pair of busses connectable to the cells and a flying capacitor connectable to the busses. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate representation of the voltage of the cell being measured. In order to prevent electrical interference with the capacitor and the ADC, the charge on the busses is reduced prior to measurement by the ADC.
    Type: Application
    Filed: January 7, 2008
    Publication date: July 10, 2008
    Applicant: EnerDel, Inc.
    Inventors: Ronald H. Jaeger, Chad Hartzog
  • Publication number: 20080084217
    Abstract: A system and method for measuring voltage of individual cells connected in series includes a single flying capacitor. The capacitor stores the charge of one of the cells such that an analog-to-digital converter (ADC) connected to the capacitor may process an accurate representation of the voltage of the cell being measured. A plurality of switches electrically connects and disconnects the cells from the capacitor. A controller is in communication with the ADC and the switches for sequencing the switches and recording the voltage measurements of each cell. At least one precision voltage reference device is included to provide the ADC a reference voltage to provide self-calibration.
    Type: Application
    Filed: October 8, 2007
    Publication date: April 10, 2008
    Applicant: ENERDEL, INC.
    Inventors: Chad Hartzog, Ronald H. Jaeger