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.:

US 8916281 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 23, 2014

Filed:

Mar. 28, 2012
Applicants:

On Kok Chang, San Jose, CA (US);

Ai Quoc Pham, Milpitas, CA (US);

Inventors:

On Kok Chang, San Jose, CA (US);

Ai Quoc Pham, Milpitas, CA (US);

Assignee:

Enervault Corporation, Sunnyvale, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/48 (2010.01); H01M 6/20 (2006.01); H01M 10/42 (2006.01); H01M 8/18 (2006.01);
U.S. Cl.
CPC ...
H01M 10/4242 (2013.01); H01M 8/188 (2013.01); Y02E 60/528 (2013.01);
Abstract

Embodiments of redox flow battery rebalancing systems include a system for reacting an unbalanced flow battery electrolyte with a rebalance electrolyte in a first reaction cell. In some embodiments, the rebalance electrolyte may contain ferrous iron (Fe) which may be oxidized to ferric iron (Fe) in the first reaction cell. The reducing ability of the rebalance reactant may be restored in a second rebalance cell that is configured to reduce the ferric iron in the rebalance electrolyte back into ferrous iron through a reaction with metallic iron.


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