Patents by Inventor C. M. HOFF

C. M. HOFF 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 Detecting Cell State-Of-Charge and State-Of-Discharge Divergence Of A Series String of Batteries Or Capacitors
    Publication number: 20090243548
    Abstract: A system for charging a battery includes a battery pack having at least two lithium ion cells. A controller detects a rate of change of voltage with respect to a state of charge (dV/dSOC) of the battery pack based on a calculated dV/dSOC that represents the battery pack as a whole, without calculating dV/dSOC individually on a cell-by-cell basis. Charging is terminated when dV/dSOC reaches a predetermined value.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Applicant: A123 Systems, Inc.
    Inventor: C. M. HOFF