Electrochemical cell simulating circuit arrangement
First Claim
1. An electronic circuit for simulating the electrical characteristics of an electrochemical cell comprising:
- a plurality of impedance elements connected in series to partially simulate an electrochemical cell;
simulator circuit means for producing potential and current which define the faradaic resistance of said electrochemical cell;
means for connecting said simulator circuit means across one of said impedance elements;
said simulator circuit means includingelectronic impedance simulating circuitry for generating said current; and
electronic current time-processing circuitry connected in series across said one of said impedance elements.
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Accused Products
Abstract
An electronic circuit arrangement effecting current flow simulating the faradaic current, oxidation reduction potential and the like of an electrochemical cell encompasses two key concepts. The first recognizes that since the semi-integral of the cell current effectively deconvolves the diffusion aspect of the phenomenon with the resultant describing the surface concentration of reacted species, then the semiderivative of a function describing a surface concentration of reacted species results in an output representing the cell current, including diffusion. The second is embodied in a circuit arrangement properly simulating this concentration behavior cell double layer potential and in yielding an output proportional to the surface concentration of reactant species corresponding to that potential in response to applied cell barrier potential.
14 Citations
14 Claims
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1. An electronic circuit for simulating the electrical characteristics of an electrochemical cell comprising:
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a plurality of impedance elements connected in series to partially simulate an electrochemical cell; simulator circuit means for producing potential and current which define the faradaic resistance of said electrochemical cell; means for connecting said simulator circuit means across one of said impedance elements; said simulator circuit means including electronic impedance simulating circuitry for generating said current; and electronic current time-processing circuitry connected in series across said one of said impedance elements. - View Dependent Claims (2, 3, 4)
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5. An electronic circuit for simulating the electrical characteristics of an electrochemical cell comprising:
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a first and a second interconnection terminal; a first differential amplifier circuit having one input terminal coupled to said first interconnection terminal, having another input terminal and having an output terminal; a second differential amplifer circuit having a first input terminal, having a second input terminal connected to a point of reference potential and having an output terminal; a resistance simulator circuit having one terminal connected to said output terminal of said first amplifier circuit and having another terminal coupled to said first input terminal of said second amplifier circuit; a third amplifier circuit having an input terminal coupled to the output terminal of said second amplifier circuit and having an output terminal; a first resistor connected between the output terminal of said third amplifier circuit and said first interconnection terminal; and a second resistor connected between the output terminal of said second amplifier circuit and the second interconnection terminal whereby the circuit coupled between said first and said second interconnection terminals is operable to substantially simulate the faradaic resistance of said electrochemical cell. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification