Method for determining a state variable of an electrochemical cell using complex impedance at radioelectric frequencies
First Claim
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1. A processor-implemented method for determining a state variable of an electrochemical cell comprising an electrode plate group, said method comprising:
- analyzing, by a processor, at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of said state variable;
determining, by the processor, an indicator of the value of said state variable;
monitoring, by the processor, the state variable of the electrochemical cell based on the determined indicator; and
determining, by the processor, that the electrochemical cell is defective if the response spectrum is outside a predetermined threshold.
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Abstract
A method is provided for determining a state variable such as aging of an electrochemical cell comprising an electrode plate group, that includes analyzing at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of the state variable.
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Citations
20 Claims
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1. A processor-implemented method for determining a state variable of an electrochemical cell comprising an electrode plate group, said method comprising:
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analyzing, by a processor, at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of said state variable; determining, by the processor, an indicator of the value of said state variable; monitoring, by the processor, the state variable of the electrochemical cell based on the determined indicator; and determining, by the processor, that the electrochemical cell is defective if the response spectrum is outside a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A processor-implemented method of monitoring the manufacture of electrochemical cells for determining a state variable of an electrochemical cell comprising an electrode plate group, the method comprising:
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analyzing, by a processor, at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of said state variable, wherein; the value of the state variable is measured on each cell manufactured; a cell is rejected if the difference between the value of the state variable measured and a reference value exceeds a predetermined threshold. - View Dependent Claims (19)
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20. A non-transitory computer readable medium storing instruction, which when executed by a computer causes the computer to implement a method of determining a state variable of an electrochemical cell comprising an electrode plate group, the method comprising:
analyzing, by a processor, at least a portion of a response spectrum of the electrochemical cell to application of an electromagnetic wave in a frequency ranging from 10 kHz to 10 GHz, so as to determine an indicator of the value of said state variable.
Specification