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:
Aug. 27, 2013
Filed:
Mar. 23, 2010
Jim Castelaz, Mountain View, CA (US);
Jessica Riley, Mountain View, CA (US);
Vishal Parikh, Palo Alto, CA (US);
Steven Diamond, San Mateo, CA (US);
Samuel Chang, San Jose, CA (US);
Jim Castelaz, Mountain View, CA (US);
Jessica Riley, Mountain View, CA (US);
Vishal Parikh, Palo Alto, CA (US);
Steven Diamond, San Mateo, CA (US);
Samuel Chang, San Jose, CA (US);
Motiv Power Systems, Inc., Foster City, CA (US);
Abstract
A system for balancing charge within a battery pack with a plurality of cells connected in series, including a capacitor; a processor configured to select a combination of donor cells and receiver cells from the plurality of cells in one of the following two modes: (1) a first mode where the number of donor cells is equal to the number of receiver cells, and (2) a second mode where the number of donor cells is greater than the number of receiver cells; and a plurality of switches that electrically connect the capacitor to the donor cells to charge the capacitor, and that electrically connected the capacitor to the receiver cells to discharge the capacitor. The transfer of charge between cells in the plurality of cells through the capacitor balances the charge within the battery pack.