METHOD OF MEASURING CHARACTERISTICS REGARDING SAFETY OF BATTERY
First Claim
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1. A measuring method of a battery, comprising:
- measuring frequency characteristics of an internal impedance of the battery by an AC impedance method;
determining frequency characteristics of an impedance using an impedance model of the battery;
determining parameters of elements constituting the impedance model so that calculation results of frequency characteristics of the impedance match measured results of frequency characteristics of the internal impedance; and
determining from the parameters a parameter of an element representing an ease of mobility of charges on a surface of a positive electrode of the battery and that of an element representing the ease of mobility of charges on the surface of a negative electrode.
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Abstract
A measuring method of a battery includes the step of measuring frequency characteristics of an internal impedance of the battery by an AC impedance method, and determining a parameter of an element representing ease of mobility of charges on a surface of a positive electrode of the battery and that of an element representing the ease of mobility of charges on the surface of a negative electrode.
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Citations
14 Claims
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1. A measuring method of a battery, comprising:
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measuring frequency characteristics of an internal impedance of the battery by an AC impedance method; determining frequency characteristics of an impedance using an impedance model of the battery; determining parameters of elements constituting the impedance model so that calculation results of frequency characteristics of the impedance match measured results of frequency characteristics of the internal impedance; and determining from the parameters a parameter of an element representing an ease of mobility of charges on a surface of a positive electrode of the battery and that of an element representing the ease of mobility of charges on the surface of a negative electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of manufacturing a battery, comprising the steps of:
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measuring frequency characteristics of an internal impedance of the battery by an AC impedance method; determining frequency characteristics of an impedance using an impedance model of the battery; determining parameters of elements constituting the impedance model so that calculation results of frequency characteristics of the impedance match measured results of frequency characteristics of the internal impedance; and measuring characteristics of the battery by determining from the parameters a parameter of an element representing the ease of mobility of charges on a surface of a positive electrode of the battery and that of an element representing the ease of mobility of charges on the surface of a negative electrode. - View Dependent Claims (14)
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Specification