Cascade redox flow battery systems

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United States of America Patent

PATENT NO 8785023
APP PUB NO 20110223450A1
SERIAL NO

12986892

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A reduction/oxidation (“redox”) flow battery system includes a series of electrochemical cells arranged in a cascade, whereby liquid electrolyte reacts in a first electrochemical cell (or group of cells) before being directed into a second cell (or group of cells) where it reacts before being directed to subsequent cells. The cascade includes 2 to n stages, each stage having one or more electrochemical cells. During a charge reaction, electrolyte entering a first stage will have a lower state-of-charge than electrolyte entering the nth stage. In some embodiments, cell components and/or characteristics may be configured based on a state-of-charge of electrolytes expected at each cascade stage. Such engineered cascades provide redox flow battery systems with higher energy efficiency over a broader range of current density than prior art arrangements.

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Patent Owner(s)

  • ENERVAULT CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bose, Deepak Fremont, US 9 236
Hickey, Darren B Santa Clara, US 6 303
Horne, Craig R Sunnyvale, US 36 1222
Kinoshita, Kim Cupertino, US 5 305
Sha, Jay E Mountain View, US 7 142

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