System and method for switching a dual mode electrochemical cell stack between modes of operation
First Claim
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1. A method useable with a dual mode electrochemical cell stack, comprising:
- providing a polarity switching subsystem having a plurality of polarity switches coupled between the dual mode electrochemical cell stack and a power conditioning subsystem;
configuring the plurality of polarity switches in a first configuration to operate the stack in a first mode of operation in which a voltage across the stack has a first polarity; and
configuring the plurality of polarity switches in a second configuration to operate the stack in a second mode of operation in which the voltage across the stack has a second polarity opposite the first polarity,wherein the plurality of polarity switches are controlled such that a short circuit is not imposed across stack terminals.
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Abstract
A system and technique for switching the polarity of an electrochemical cell stack to switch operation of the stack between a power producing mode of operation and an electrochemical pumping mode of operation is provided. The system and technique include a plurality of polarity switches that are switched between configurations in response to a mode select signal.
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7 Claims
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1. A method useable with a dual mode electrochemical cell stack, comprising:
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providing a polarity switching subsystem having a plurality of polarity switches coupled between the dual mode electrochemical cell stack and a power conditioning subsystem; configuring the plurality of polarity switches in a first configuration to operate the stack in a first mode of operation in which a voltage across the stack has a first polarity; and configuring the plurality of polarity switches in a second configuration to operate the stack in a second mode of operation in which the voltage across the stack has a second polarity opposite the first polarity, wherein the plurality of polarity switches are controlled such that a short circuit is not imposed across stack terminals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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