Patents by Inventor Dennis K. Kang

Dennis K. Kang 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).

  • Accurate battery current measurement system for a battery care unit
    Patent number: 6417670
    Abstract: A current measurement system for a battery is provided. The current measurement system has a shunt resistor in electrical communication with the battery. The shunt resistor is operative to generate a shunt voltage in response to the current flowing through the battery. The system further includes a voltage to frequency converter in electrical communication with the shunt resistor. The voltage to frequency converter is operative to generate a frequency signal in response to the shunt voltage. A processor of the system determines a frequency value from the frequency signal and determines the current of the battery from predetermined current values. In this respect, the processor can linearly interpolate the current through the battery from the value of the frequency signal and stored predetermined current values such that an accurate current measurement can be made.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: July 9, 2002
    Assignee: Enova Systems
    Inventor: Dennis K. Kang