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:
Nov. 12, 2013
Filed:
Nov. 21, 2011
Chad Hartzog, Kokomo, IN (US);
Chad Hartzog, Kokomo, IN (US);
Ener1, Inc., Greenfield, IN (US);
Abstract
A method of balancing a state of charge (SOC) of a plurality of cells connected in series, including identifying an undercharged cell from the plurality of cells to charge, electrically connecting a positive side of the undercharged cell to a positive bus, electrically connecting a negative side of the undercharged cell to a negative bus, electrically connecting an inductor to a voltage source during a first time period; electrically disconnecting the inductor from the voltage source in response to an elapse of the first time period, and maintaining the disconnection of the inductor from the plurality of cells for a second time period corresponding generally to the time for the inductor to discharge energy to the undercharged cell.