BATTERY MONITORING DEVICE, INTEGRATED CIRCUIT, AND BATTERY MONITORING SYSTEM

Title:

BATTERY MONITORING DEVICE, INTEGRATED CIRCUIT, AND BATTERY MONITORING SYSTEM

Document Type and Number:

WIPO Patent Application WO/2020/003841

Kind Code:

A1

Abstract:

This battery monitoring device (100) comprises: a first reference resistor (103) disposed on a path (P2) different from a path (P1) for a current flowing from a battery to a load (102); a transistor (104) for causing the current to flow from the battery to the first reference resistor (103); and an integrated circuit (105). The integrated circuit (105) has: a current measurement unit (112) that measures a first current flowing through the first reference resistor (103); a voltage measurement unit (115) that measures a voltage of a battery (B); and a first calculation unit (118) that calculates an AC impedance of the battery on the basis of the measured first current and the measured first voltage.

Inventors:

MATSUKAWA KAZUO
OKADA YU
MAKABE YOSHIKAZU
KOBAYASHI HITOSHI
MISAKU TAKESHI
FUJII KEIICHI

Application Number:

PCT/JP2019/020801

Publication Date:

January 02, 2020

Filing Date:

May 27, 2019

Export Citation:

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Assignee:

PANASONIC IP MAN CO LTD (JP)

International Classes:

G01R31/389; H01M10/48; H02J7/00

Foreign References:

JP2017078658A	2017-04-27
JP2013064697A	2013-04-11
JP2013054003A	2013-03-21
JP2003090869A	2003-03-28
JP2015094726A	2015-05-18
JPS543437B2	1979-02-22

Other References: