| 摘要 |
PROBLEM TO BE SOLVED: To provide a state measurement apparatus for simply and inexpensively measuring the state quantity, such as, an output voltage and a temperature, when a power supply element is charged and discharged. SOLUTION: In a cell measurement circuit 11, a measurement computer 12 and a capacitor C1 are connected across both terminals of a battery cell B in parallel. An output 14b of an activation photocoupler 14 is connected to the measurement computer 12, a reference voltage generating IC 15 and a temperature sensor 16. THe output terminals of the reference voltage generating IC 15 and the temperature sensor 16 are connected to input terminals of the measurement computer 12. The measurement computer 12 is connected to an input 18a of an output photocoupler 18. The measurement computer 12 receives an activation signal from the activation photocoupler 14; detects the output voltage from each battery cell Bn; reads the temperature from the temperature sensor 16; and calculates the magnitude of the output voltage and the temperature, based on a reference voltage read from the reference voltage generating IC. COPYRIGHT: (C)2010,JPO&INPIT
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