公开(公告)号：US12119698B2

公开(公告)日：2024-10-15

申请号：US17305401

申请日：2021-07-07

Applicant: FDK CORPORATION

Inventor： Shunichiro Sugimori ,  Yusuke Kusagaya ,  Takashi Kabasawa

IPC: H02J7/00

CPC classification number: H02J7/007182 ,  H02J7/0048 ,  H02J7/0071

Abstract: A battery indicator estimates a remaining battery capacity when a controller instructs a driving power source to start the power supply based on a battery voltage detected at a timing when the controller instructs the driving power source to start the power supply. The controller instructs the driving power source to stop the power supply after the discharge of a secondary battery by a charge-discharge circuit is ended and at a timing when a battery voltage being measured by a voltage measurer is stabilized.

公开(公告)号：US20220352564A1

公开(公告)日：2022-11-03

申请号：US17651408

申请日：2022-02-16

Applicant: FDK CORPORATION

Inventor： Takashi Kabasawa ,  Naoaki Konda ,  Yusuke Kusagaya

IPC: H01M10/42 ,  H01M10/48 ,  H01M10/46

Abstract: A transmission/reception path is configured to transmit a detection result sent from a sensor to a control device and external equipment connected to a connection terminal, and transmit a program for update transmitted from the external equipment to the control device via the connection terminal. The control device can perform update for updating a control program stored in a storage unit to the program for update transmitted from the external equipment via the connection terminal and the transmission/reception path.

公开(公告)号：US20220021231A1

公开(公告)日：2022-01-20

申请号：US17305401

申请日：2021-07-07

Applicant: FDK CORPORATION

Inventor： Shunichiro Sugimori ,  Yusuke Kusagaya ,  Takashi Kabasawa

IPC: H02J7/00

Abstract: A battery indicator estimates a remaining battery capacity when a controller instructs a driving power source to start the power supply based on a battery voltage detected at a timing when the controller instructs the driving power source to start the power supply. The controller instructs the driving power source to stop the power supply after the discharge of a secondary battery by a charge-discharge circuit is ended and at a timing when a battery voltage being measured by a voltage measurer is stabilized.

公开(公告)号：US20230118823A1

公开(公告)日：2023-04-20

申请号：US17905144

申请日：2021-02-04

Applicant: FDK CORPORATION

Inventor： Yusuke Kusagaya

IPC: H01M10/42 ,  H01M10/48 ,  H01M50/296 ,  G01R31/387

Abstract: Provided is a battery pack that is charged by being connected to a charger and discharged by being connected to a load, the battery pack including: a charge-discharge terminal 1a including a positive electrode terminal, a negative electrode terminal, and a temperature terminal; a secondary battery that is charged and discharged through the positive electrode terminal and the negative electrode terminal; a current measurement unit that measures a charge-discharge current of the secondary battery; a thermistor which is connected to the temperature terminal and which measures a battery temperature of the secondary battery; a voltage switching unit that intermittently outputs to the temperature terminal an applied voltage that causes the thermistor to operate; and a control unit that recognizes a connected state of the charge-discharge terminal on the basis of the voltage at the temperature terminal in an on-period and an off-period of the applied voltage, and the charge-discharge current.

公开(公告)号：US20230118126A1

公开(公告)日：2023-04-20

申请号：US17906066

申请日：2021-02-04

Applicant: FDK CORPORATION

Inventor： Yasunari Mizoguchi ,  Yusuke Kusagaya

IPC: H01M10/42 ,  H01M10/48 ,  H01M10/46 ,  H02J7/00 ,  H01M10/44

Abstract: A battery pack is provided in which the battery pack itself can recognize a determination of a full charge, which is made by a charger, without using a communication line. A battery pack is provided with a secondary battery, current measurement means for measuring a charging current for charging the secondary battery, and a control circuit which receives an output signal from the current measurement means. The control circuit determines that the secondary battery is fully charged when a reduction rate of the charging current in a unit time exceeds a predetermined value.

公开(公告)号：US20230035670A1

公开(公告)日：2023-02-02

申请号：US17758995

申请日：2021-02-16

Applicant: FDK CORPORATION

Inventor： Jinichi Sakamoto ,  Yusuke Kusagaya

IPC: G06F11/20 ,  G06F11/00 ,  G06F8/65

Abstract: A control unit is configured to determine success or failure of a rewrite process after end of the rewrite process, and write success or failure display data into a success or failure determination result storage area in accordance with the success or failure, and read the success or failure display data present in the success or failure determination result storage area after startup of an electronic device, and execute a control program, in lieu of carrying out the rewrite process, when it is determined that the success or failure display data indicate a success of the rewrite process.