Electrochemical cell characterisation
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsJohn P. LESSO, Yanto SURYONO, Toru IDO
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Abstract
Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising: drive circuitry configured to apply a stimulus to the electrochemical cell; sense circuitry configured to measure a response of the electrochemical cell to the stimulus; and processing circuitry configured to: determine an estimated transfer function of the electrochemical cell based on the stimulus and the response; determine a score for the estimated transfer function; and adjust the stimulus or circuitry used to measure the response based on the score.
Claims33
Circuitry for determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising:
- drive circuitry configured to apply a stimulus to the electrochemical cell;
- sense circuitry configured to measure a response of the electrochemical cell to the stimulus;
- and
- processing circuitry configured to:
- determine an estimated transfer function of the electrochemical cell based on the stimulus and the response;
- determine a score for the estimated transfer function;
- and
- adjust the stimulus or circuitry used to measure the response based on the score.
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A system comprising:
- the electrochemical cell;
- and
- circuitry for determining an impedance of the electrochemical cell comprising at least one first electrode and a second electrode, the circuitry comprising:
- drive circuitry configured to apply a stimulus to the electrochemical cell;
- sense circuitry configured to measure a response of the electrochemical cell to the stimulus;
- and
- processing circuitry configured to:
- determine an estimated transfer function of the electrochemical cell based on the stimulus and the response;
- determine a score for the estimated transfer function;
- and
- adjust the stimulus or circuitry used to measure the response based on the score.
-34. (canceled)
A method of determining an impedance of an electrochemical cell comprising at least one first electrode and a second electrode, the method comprising:
- applying a stimulus to the electrochemical cell, the stimulus having a stimulation frequency and a stimulation amplitude;
- measuring a response of the electrochemical cell to the stimulus;
- and
- determining an estimated transfer function of the electrochemical cell based on the stimulus and the response;
- determining a score for the estimated transfer function;
- and
- adjusting the stimulus or circuitry used to measure the response based on the score.
Dependencies are inferred from the claim text.