Sekundärbatterie-Zustandserfassungsvorrichtung und Sekundärbatterie-Zustandserfassungsverfahren

Details

Veröffentlichungs-Nr.

EP2642309

Aktenzeichen

EP13160340

Anmeldetag

21. März 2013

Veröffentlichung

20. Februar 2019

Erteilung

20. Februar 2019

Rechtsraum

EP

IPC

G01R31/36// G01R19/04

Abstract

A current detecting unit (current sensor 12) detecting a current value of a current flowing in a secondary battery 14; an extreme value detecting unit (CPU 10a) detecting a first extreme value of a current after an inrush current flows from the secondary battery to a starter motor after electricity to the starter motor is turned on based on the current value; an inflection point detecting unit (CPU 10a) detecting a first inflection point of the current after the inrush current flows based on a variation of the current value per a predetermined time; and a calculation unit (CPU 10a) selecting the inflection point when timings when the extreme value and the inflection point are detected are separated for a predetermined time or more, and selecting either one of the extreme value or the inflection point in the other cases to set as a starting current, and calculating a starting voltage from the starting current, an internal resistance of the secondary battery, and a voltage before starting being a voltage of the secondary battery before the electricity to the starter motor is turned on, are included.

Anmelder

Firmen

Furukawa Electric Co., Ltd.
Furukawa Automotive Systems Inc.
Honda Motor Co., Ltd.

Land

🇯🇵 Japan

Fachgebiete