IMPEDANCE MEASURING DEVICE

Title:

IMPEDANCE MEASURING DEVICE

Document Type and Number:

Japanese Patent JP2016014634

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide an impedance measuring device capable of reducing the size of the device and suppressing manufacturing cost.SOLUTION: An impedance measuring device comprises: power supply means outputting an AC current to a positive electrode and a negative electrode of a stacked battery in which a plurality of battery cells is stacked; and detection means detecting at least one of an AC potential difference between the positive electrode and a midway point of the stacked battery and an AC potential difference between the negative electrode and the midway point. The impedance measuring device comprises: arithmetic means computing an impedance of the stacked battery on the basis of the AC potential difference detected by the detection means and the AC current output from the power supply means; and DC cutoff means cutting off a DC signal output from the stacked battery. Furthermore, the impedance measuring device comprises synthesis means synthesizing a different signal with a signal output to the stacked battery via the DC cutoff means.

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Inventors:

SAKAI MASANOBU

Application Number:

JP2014137959A

Publication Date:

January 28, 2016

Filing Date:

July 03, 2014

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