公开(公告)号：US10601084B2

公开(公告)日：2020-03-24

申请号：US16591243

申请日：2019-10-02

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Shoichi Toya ,  Kazuya Ohshima

IPC: H01M10/44 ,  H01M10/615 ,  H01M10/48 ,  H02J7/00 ,  H01M10/42 ,  H01M10/0525 ,  H01M10/6571 ,  H01M10/052 ,  H01M10/34

Abstract: A battery pack includes a secondary battery, a circuit having a consumer consuming power of the battery, terminals charging or discharging the pack, a switch that, when the voltage of the battery reaches the discharge cutoff voltage, is opened to stop discharge of the battery through the terminals, and a controller performing a first discharge operation activating the circuit and causing the consumer to consume a remaining power of the battery until a voltage of the battery reaches a first threshold value, higher than the discharge cutoff voltage, and stopping, when the voltage of the battery reaches the first threshold value, the first discharge operation. The controller also performs a second discharge operation activating the circuit and causing the consumer to consume the remaining power of the battery until the voltage of the battery reaches a third threshold value, lower than the discharge cutoff voltage.

公开(公告)号：US10476113B2

公开(公告)日：2019-11-12

申请号：US15277363

申请日：2016-09-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shoichi Toya ,  Kazuya Ohshima

IPC: H01M10/44 ,  H01M10/48 ,  H01M10/615 ,  H01M10/6571 ,  H01M10/0525 ,  H01M10/42 ,  H02J7/00 ,  H01M10/34 ,  H01M10/052

Abstract: A storage battery pack includes: a secondary battery; and a circuit that includes a power consumer which consumes power of the secondary battery, and that causes the power consumer to consume a remaining power of the secondary battery until a voltage of the secondary battery reaches a voltage lower than a discharge cutoff voltage.

公开(公告)号：US12235306B2

公开(公告)日：2025-02-25

申请号：US18015056

申请日：2021-07-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazunori Kidera ,  Tatsuo Koga ,  Takahiro Ohori ,  Keita Kanamori ,  Kazuya Ohshima

IPC: G01R31/00

Abstract: An arc detection device includes an obtainer and a determiner. The obtainer obtains a measurement result for a voltage applied to one target power supply line among a plurality of power supply lines to which power is supplied from a DC power source. The determiner determines, based on a component of a specific frequency band in the measurement result for the voltage obtained by the obtainer, whether there is a possibility of an arc fault occurring in the plurality of power supply lines.

公开(公告)号：US09887540B2

公开(公告)日：2018-02-06

申请号：US14924713

申请日：2015-10-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki Waki ,  Kazuya Ohshima ,  Hideshi Aoki ,  Haruka Nakasone

IPC: H02J3/00 ,  G06Q50/06 ,  H02J3/38 ,  H02J13/00

CPC classification number: H02J3/00 ,  G06Q10/06 ,  G06Q50/06 ,  H02J3/008 ,  H02J3/383 ,  H02J13/0006 ,  Y02E10/563 ,  Y02E40/72 ,  Y04S10/123 ,  Y04S50/10

Abstract: A power management method receives, from a meter that measures the amount of surplus power, which is power supplied from a power generation apparatus to a power system, a surplus power value indicating the amount of surplus power, receives, from a first communication terminal used by a user corresponding to first user identification information, an inquiry about power supply in which the surplus power is used in a first time period that lasts a certain unit time, the inquiry being associated with the first user identification information, issues, in accordance with the inquiry, first power identification information for validating power supply performed by a power supply apparatus using the surplus power corresponding to the first time period for an accumulated value of the amount of surplus power corresponding to the first time period, transmits the first power identification information and the accumulated value of the amount of surplus power corresponding to the first time period to the first communication terminal, and causes the power supply apparatus that has received a first power supply request, which is associated with the first power identification information, indicating that power is to be supplied to the first load apparatus to supply an amount of first power equal to or smaller than the amount of surplus power to the first load apparatus as power that does not cause a charging process.

公开(公告)号：US12088080B2

公开(公告)日：2024-09-10

申请号：US17802632

申请日：2021-03-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuya Ohshima ,  Tatsuo Koga ,  Keita Kanamori ,  Kazunori Kidera

IPC: H02H7/00 ,  H02H1/00 ,  H02H7/20

CPC classification number: H02H1/0015 ,  H02H7/20

Abstract: An arc detection device includes: a current detector that includes a magnetic core penetrated by first and second paths each connecting a DC power source and a device, and detects a current flowing through each of the first and second paths in accordance with a magnetic field generated at the magnetic core; a low impedance circuit having a lower impedance than the DC power source and the device, the low impedance circuit being connected to the first path and the second path to cause a high frequency component to bypass one of the first path or the second path; and an arc determiner that determines an occurrence of an arc based on a current detected by the current detector. In the magnetic core, a direct current flows through the first path in a direction opposite to a direction in which a direct current flows through the second path.