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).

公开(公告)号：US20180219387A1

公开(公告)日：2018-08-02

申请号：US15797680

申请日：2017-10-30

Applicant: FUJITSU TEN LIMITED

Inventor： Yukio ISHIKAWA

IPC: H02J7/00 ,  G01R31/36

CPC classification number: H02J7/0014 ,  G01R31/3648 ,  G01R31/396 ,  H02J7/0026

Abstract: An electric storage apparatus according to one aspect of an embodiment includes a battery unit, a determination unit, a virtual processing unit, and a connection controlling unit. The battery unit includes storage batteries to be connected in parallel. The determination unit determines, when the battery unit is started up, a startup type indicating a discharge start or a charge start. The virtual processing unit generates connection orders. Each of the connection orders is obtained by virtually and sequentially connecting in parallel storage batteries, of the storage batteries, having potential differences within a predetermined range so as to equalize electric potentials of the storage batteries. The connection controlling unit selects, among from the connection orders, a connection order in which the equalized electric potential is an electric potential according to the startup type determined by the determination unit, so as to connect in parallel the storage batteries.

公开(公告)号：US20180212443A1

公开(公告)日：2018-07-26

申请号：US15797951

申请日：2017-10-30

Applicant: FUJITSU TEN LIMITED

Inventor： Yukio ISHIKAWA

IPC: H02J7/00 ,  H01M10/42

CPC classification number: H02J7/0019 ,  H01M10/42 ,  H01M10/4207 ,  H01M2010/4271 ,  H02J7/0021

Abstract: An electric storage apparatus according to one aspect of an embodiment includes a plurality of storage batteries, a virtual processing unit, and a connection controlling unit. The virtual processing unit virtually and sequentially connects in parallel two or more storage batteries, of the plurality of storage batteries, having a potential difference or potential differences within a predetermined range so as to equalize electric potentials of the two or more storage batteries. The connection controlling unit connects in parallel the two or more storage batteries in a connection order for maximizing the number of the two or more storage batteries to be connected in parallel when the virtual processing unit sequentially connects in parallel the two or more storage batteries in an order from highest electric potential to lowest one and in an order from lowest electric potential to highest one.

公开(公告)号：US20180219391A1

公开(公告)日：2018-08-02

申请号：US15797567

申请日：2017-10-30

Applicant: FUJITSU TEN LIMITED

Inventor： Yukio ISHIKAWA

IPC: H02J7/00 ,  H01M10/44 ,  H01M2/10

CPC classification number: H02J7/0026 ,  H01M2/1072 ,  H01M10/44 ,  H01M2220/20 ,  H02J7/0014 ,  H02J7/0016 ,  H02J7/0019 ,  Y02T10/7005

Abstract: An electric storage apparatus according to one exemplary aspect of an embodiment of the disclosure includes a battery unit, a determination unit, and a connection controlling unit. In the battery unit, a plurality of storage batteries is connected in parallel. Each of the storage batteries includes serially connected electric storage elements.

公开(公告)号：US20170219659A1

公开(公告)日：2017-08-03

申请号：US15391325

申请日：2016-12-27

Applicant: FUJITSU TEN LIMITED

Inventor： Yukio ISHIKAWA

IPC: G01R31/36

CPC classification number: G01R31/3675 ,  G01R19/0084 ,  G01R19/0092 ,  G01R31/362 ,  G01R31/3658

Abstract: There is provided a voltage detecting device. A plurality of detecting units are configured to detect voltages of a plurality of battery stacks of a battery pack having the plurality of battery stacks each having a plurality of battery cells connected, at intervals of a predetermined period, respectively. A mode switching unit is configured to perform switching between an active mode in which the detecting units detect the voltages and a standby mode in which the value of an electric current flowing in the detecting units is smaller than a predetermined value. A timing changing unit is configured to change start timings or/and finish timings of the active mode.