CURRENT MEASUREMENT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a current measurement device which suppress reduction in the current measurement accuracy of a current measurement device attributable to an induced electromotive voltage.

SOLUTION: The current measurement device comprises: a pair of electrodes 111 and 151 which are disposed on both sides of a measurement part collection plate; a measurement part having a resistive body electrically connecting the pair of electrodes 111 and 151; a pair of induced electromotive voltage measurement parts 103 which are disposed so as to sandwich the resistive body while being insulated from the pair of electrodes 111 and 151 and the resistive body; a potential difference detection voltage sensor 104 which detects a potential difference between the pair of electrodes 111 and 151; an inducted electromotive voltage detection voltage sensor 105 which detects a potential difference between the pair of induced electromotive voltage measurement parts 103; and a signal processing circuit. The signal processing circuit detects a current value flowing in the local portion of a cell by using a correction value derived from a potential difference detected by the potential difference detection voltage sensor 104 by correcting it with a detection value detected by the inducted electromotive voltage detection voltage sensor 105 and an electrical resistance value of the resistive body.

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