The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2016
Filed:
Nov. 06, 2013
Google Technology Holdings Llc, Mountain View, CA (US);
Kenneth L. Kessler, Lake Zurich, IL (US);
Richard Jakubowski, Buffalo Grove, IL (US);
Robert M. Johnson, Lake Zurich, IL (US);
Google Technology Holdings LLC, Mountain View, CA (US);
Abstract
An apparatus () includes at least one electrochemical cell () and at least one pass element () serially coupled with the electrochemical cell. A control circuit () is operable to open the at least one pass element when a charger () or power supply () is connected to the electrochemical cell for at least a predetermined time and to measure an open circuit voltage of the at electrochemical cell to determine a state of charge. The control circuit can then close the pass element to charge the electrochemical cell, determine an amount of the charge, and store an estimated energy capacity of the electrochemical cell based upon the open circuit voltage and the amount.