公开(公告)号：US20180017625A1

公开(公告)日：2018-01-18

申请号：US15605103

申请日：2017-05-25

Applicant: FUJITSU TEN LIMITED

Inventor： Yukio ISHIKAWA ,  Kensuke MATSUDA ,  Masahiko KUSAKI

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3835 ,  G01R31/392 ,  G01R31/396 ,  H02J7/0021 ,  H02J7/0032 ,  H02J7/0068 ,  Y02T10/7055

Abstract: A voltage detecting device according to an aspect of embodiments includes a detecting unit and a mode switching unit. The detecting unit detects voltages of battery cells of a battery stack in which the battery cells are connected to each other. The mode switching unit switches between an active mode in which the detecting unit detects the voltages and a standby mode in which a current flowing into the detecting unit is less than a predetermined value. Moreover, the detecting unit includes a voltage detecting unit that detects the voltages of the battery cells and/or a voltage of a power supply of the detecting unit in a predetermined interval. The mode switching unit switches between the active mode and the standby mode in accordance with a timing at which the voltage detecting unit detects the voltage (s).