Status detector for power supply, power supply, and initial characteristic extracting device for use with power supply

A power supply comprising:

• electricity accumulating means capable of being charged and discharged;
• measuring means capable of obtaining measured values of at least current, voltage and temperature of said electricity accumulating means;
• and status detecting means for detecting status of said electricity accumulating means, said status detecting means comprising:
• memory means for storing characteristic information of said electricity accumulating means;
• processing means for executing status detection of said electricity accumulating means by using the measured values and the characteristic information of said electricity accumulating means which is stored in said memory means to calculate a value of status detection;
• discrepancy detecting means for detecting from a theoretical value when the calculated value of the status detection obtained by said processing means is changed over a predetermined threshold or reversed with respect to the measured values obtained by said measuring means;
• and
• modifying means for modifying the characteristic information used subsequently for status detection value calculation by said processing means and stored in said memory means depending on the discrepancy detected by said discrepancy detecting means wherein said modifying means make modification to increase internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is changed over the predetermined threshold, and modification to decrease the internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is reversed with respect to the measured values obtained by said measuring means.

An initial characteristic extracting device for use with a power supply, comprising:

• electricity accumulating means capable of being charged and discharged;
• measuring means for obtaining information of said electricity accumulating means during charge and discharge;
• and
• status detecting means for detecting status of said electricity accumulating means,
• said status detecting means comprising measuring means capable of obtaining measured values of at least current, voltage and temperature of said electricity accumulating means;
• measuring means capable of obtaining measured values of at least current, voltage and temperature of said electricity accumulating means;
• memory means for storing characteristic information of said electricity accumulating means;
• processing means for executing status detection of said electricity accumulating means by using the measured values and the characteristic information of said electricity accumulating means which is stored in said memory means to calculate a value of status detection;
• discrepancy detecting means for detecting from a theoretical value;
• and
• modifying means for modifying the characteristic information used subsequently for status detection value calculation by said processing means and stored in said memory means depending on the discrepancy detected by said discrepancy detecting means,
• said initial characteristic extracting device further comprising a charging/discharging device for charging and discharging said electricity accumulating means in accordance with a predetermined pulse pattern,
• said charging/discharging device performing charge and discharge of said electricity accumulating means,
• said measuring means measuring the information of said electricity accumulating means during the charge and the discharge,
• said processing means detecting the status of said electricity accumulating means by using the measured values and the characteristic information of said electricity accumulating means which is stored in said memory means,
• said discrepancy detecting means detecting the presence of a discrepancy of the detected status away from the theoretical value, and
• said modifying means modifying the characteristic information such that the characteristic information is converged within a certain range and the converged characteristic information is extracted as an initial characteristic of said electricity accumulating means wherein said modifying means make modification to increase internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is changed over the predetermined threshold, and modification to decrease the internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is reversed with respect to the measured values obtained by said measuring means.

An initial characteristic extracting device for use with a power supply, comprising:

• plurality of electricity accumulating means capable of being charged and discharged;
• measuring means for obtaining information of said electricity accumulating means during charge and discharge;
• and status detecting means for detecting status of said electricity accumulating means, said status detecting means comprising:
• memory means for storing characteristic information of said electricity accumulating means;
• processing means for executing status detection of said electricity accumulating means by using the measured values and the characteristic information of said electricity accumulating means which is stored in said memory means to calculate a value of status detection;
• discrepancy detecting the presence of a discrepancy away means for detecting from a theoretical value;
• and
• modifying means for modifying the characteristic information used subsequently for status detection value calculation by said processing means and stored in said memory means depending on the discrepancy detected by said discrepancy detecting means, said modifying means make modification to increase internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is changed over the predetermined threshold, and modification to decrease the internal DC resistance of said electricity accumulating means as one item of the characteristic information when the result of the status detection is reversed with respect to the measured values obtained by said measuring means;
• said initial characteristic extracting device further comprising a charge/discharge control unit for charging and discharging a plurality of electricity accumulating means therebetween in accordance with a predetermined pulse pattern,
• said charging/discharging device performing charge and discharge between said plurality of electricity accumulating means, and
• said measuring means obtaining measured values during the charge and the discharge between said plurality of electricity accumulating means such that an initial characteristic of said electricity accumulating means is extracted using the measured values.