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.

Date of Patent:
Apr. 01, 2025

Filed:

May. 25, 2023
Applicant:

Ess Tech, Inc., Wilsonville, OR (US);

Inventors:

Yang Song, West Linn, OR (US);

Craig E. Evans, West Linn, OR (US);

Timothy J. McDonald, Portland, OR (US);

Kenneth Fisher, Portland, OR (US);

Sean Kissick, Portland, OR (US);

Assignee:

ESS TECH, INC., Wilsonville, OR (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 8/04 (2016.01); H01M 8/04186 (2016.01); H01M 8/04276 (2016.01); H01M 8/18 (2006.01);
U.S. Cl.
CPC ...
H01M 8/04276 (2013.01); H01M 8/04186 (2013.01); H01M 8/188 (2013.01);
Abstract

A method for a redox flow battery system may include flowing an electrolyte from an electrolyte storage tank to a multi-stage rebalancing reactor, the multi-stage rebalancing reactor comprising reactor vessels grouped to form stages. Hydrogen gas may be injected into the electrolyte upstream of the multi-stage rebalancing reactor via a gas line and a metal ion of the electrolyte may be chemically reduced by oxidizing the hydrogen gas at a catalyst bed of each of the reactor vessels to maintain a charge balance of the electrolyte and a pH of the electrolyte within a predetermined range.


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