Patents by Inventor James E. Kettlewell

James E. Kettlewell 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 and apparatus for evaluating a weld junction between a terminal and an electrode element of a battery cell
    Patent number: 10274448
    Abstract: A method and a test fixture for evaluating a weld seam joining an electrode foil element and a terminal of a battery cell include segmenting the weld seam joining the electrode foil element and the terminal into a plurality of zones. For each of the zones, an electrical current is applied between the terminal and the electrode foil element in the zone, and a resistance is determined across the terminal and the electrode foil element in the zone. Integrity of the weld seam is evaluated for each of the zones based upon the resistance between the terminal and the electrode foil element in the zone.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: April 30, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Jason A. Lupienski, Robert W. Chalfant, James E. Kettlewell
  • METHOD AND APPARATUS FOR EVALUATING A WELD JUNCTION BETWEEN A TERMINAL AND AN ELECTRODE ELEMENT OF A BATTERY CELL
    Publication number: 20170322168
    Abstract: A method and a test fixture for evaluating a weld seam joining an electrode foil element and a terminal of a battery cell include segmenting the weld seam joining the electrode foil element and the terminal into a plurality of zones. For each of the zones, an electrical current is applied between the terminal and the electrode foil element in the zone, and a resistance is determined across the terminal and the electrode foil element in the zone. Integrity of the weld seam is evaluated for each of the zones based upon the resistance between the terminal and the electrode foil element in the zone.
    Type: Application
    Filed: October 14, 2016
    Publication date: November 9, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jason A. Lupienski, Robert W. Chalfant, James E. Kettlewell