公开(公告)号：US20180366973A1

公开(公告)日：2018-12-20

申请号：US16114581

申请日：2018-08-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAHIRO KUDO ,  YOSHIMITSU ODAJIMA ,  YOHSUKE MITANI

IPC: H02J7/34 ,  H02J50/05 ,  H02J7/02 ,  G05F3/26 ,  H02M3/338 ,  H01L29/866

CPC classification number: H02J7/345 ,  G05F3/26 ,  H01L29/866 ,  H02J7/00 ,  H02J7/025 ,  H02J50/05 ,  H02M3/3385

Abstract: A discharge circuit includes: a first transistor connected to power storage; an operational amplifier for controlling an output current of the first transistor; and the current mirror circuit connected to the operational amplifier. The current mirror circuit includes a second transistor connected to a non-inverting input terminal of the operational amplifier, and a third transistor connected to the power storage.

公开(公告)号：US20200335991A1

公开(公告)日：2020-10-22

申请号：US16920379

申请日：2020-07-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： HIROAKI TSUKAMOTO ,  YOHSUKE MITANI ,  TAKAHIRO KUDO ,  YOSHIMITSU ODAJIMA

IPC: H02J7/00 ,  B60R16/033 ,  H01M10/44

Abstract: A power storage device includes an input terminal, an output terminal, a first circuit, and a second circuit. The input terminal is to be electrically connected to a power supply. The output terminal is to be electrically connected to a load. The first circuit and the second circuit are electrically connected in parallel. Each of the first circuit and the second circuit are disposed between the input terminal and the output terminal. The first circuit includes a power storage unit and a discharge path that allows a discharge current from the power storage unit to flow toward the output terminal. The second circuit includes a blocking path that prevents the discharge current from flowing toward the input terminal.

公开(公告)号：US20190173311A1

公开(公告)日：2019-06-06

申请号：US16324051

申请日：2017-08-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TAKAHIRO KUDO ,  YOHSUKE MITANI ,  YOSHIMITSU ODAJIMA

IPC: H02J7/14 ,  B60R16/033 ,  H02J9/06 ,  H02J7/00

Abstract: The present disclosure relates to a vehicle electricity storage device capable of maintaining proper backup of a main power supply. The vehicle electricity storage device includes an electricity storage circuit, a main charge circuit, and a precharge circuit. The electricity storage circuit configured to supply stored electricity to a load. The main charge circuit operates to supply electricity of a main power supply to the electricity storage circuit when an ignition switch is in an ON state of allowing an engine to start. The precharge circuit operates to supply electricity of the main power supply to the electricity storage circuit when the main charge circuit is in a state of stopping operation by the ignition switch being turned off.