公开(公告)号：US10096347B2

公开(公告)日：2018-10-09

申请号：US15792321

申请日：2017-10-24

Applicant: MAKITA CORPORATION

Inventor： Junichi Katayama ,  Tomoo Muramatsu

IPC: G11C7/00 ,  G11C7/10 ,  G11C5/14 ,  H01M10/42 ,  H02J7/00

Abstract: A battery pack in one aspect of the present disclosure includes a rechargeable battery, a rewritable nonvolatile memory, a write request receiver, and a write controller. The rewritable nonvolatile memory includes storage areas including a write-inhibit area. The write request receiver receives a write request and data from a charger. The write request includes a first address assigned to a first storage area of the storage areas. The data includes a first data element. The write controller executes a write process for the received data. The write process includes avoiding writing the first data element to the first storage area in response to determining that the first storage area is the write-inhibit area.

公开(公告)号：US11552366B2

公开(公告)日：2023-01-10

申请号：US16731164

申请日：2019-12-31

Applicant: MAKITA CORPORATION

Inventor： Junichi Katayama

IPC: H01M50/20 ,  H01M50/209 ,  B25F5/02

Abstract: One aspect of the present disclosure provides a power source controller including a first battery pack connector, a working machine connector, and a power supply control device. The first battery pack connector is configured to be coupled to a first battery pack including a rechargeable battery. The working machine connector is configured to be detachably coupled to an electric working machine driven by an electric power of the first battery pack. The power supply control device is configured to supply the electric power of the first battery pack to the electric working machine in response to fulfillment of a first condition. The power supply control device is configured to transmit a dummy command signal to the first battery pack in response to fulfillment of a second condition.

公开(公告)号：US11575339B2

公开(公告)日：2023-02-07

申请号：US17836021

申请日：2022-06-09

Applicant: MAKITA CORPORATION

Inventor： Junichi Katayama ,  Hitoshi Suzuki

IPC: H02P31/00 ,  H02P29/40 ,  H02P29/68 ,  H01R31/06 ,  H02J7/00 ,  H02P27/06

Abstract: One aspect of the present disclosure is a power-supply apparatus to supply an electric power to an electric working machine including a trigger switch, a motor, and a tool. The power-supply apparatus includes a connection detector, a trigger detector, and a signal outputter. In response to (i) the connection detector detecting connection of the electric working machine to the power-supply apparatus, and also to (ii) the trigger detector detecting an ON state of the trigger switch, the signal outputter outputs, to the electric working machine, a discharge prohibition signal prohibiting supply of the electric power to the motor, until an OFF state of the trigger switch is detected once by the trigger detector.

公开(公告)号：US10855089B2

公开(公告)日：2020-12-01

申请号：US16161507

申请日：2018-10-16

Applicant: MAKITA CORPORATION

Inventor： Tadahiko Kobayakawa ,  Junichi Katayama

IPC: H02J7/00 ,  H01M10/44

Abstract: A charging control device includes a detector detecting a temperature of a battery; a controller causing the charger to stop charging the battery in response to the temperature of the battery falling outside a first range during the charging of the battery; an obtainer obtaining, from the charger, information that is capable of identifying a charging characteristic of the charger; a range setter setting the first range to be a temperature range that corresponds to the charging characteristic of the charger based on the information obtained in the obtainer.

公开(公告)号：US10418826B2

公开(公告)日：2019-09-17

申请号：US15361210

申请日：2016-11-25

Applicant: MAKITA CORPORATION

Inventor： Junichi Katayama ,  Masafumi Noda ,  Tadahiko Kobayakawa

IPC: H02J7/00 ,  H01M10/44 ,  H02J7/04 ,  H01M10/42

Abstract: A battery device having a chargeable and dischargeable battery; a detection unit that detects a state of the battery; and a control unit. The control unit calculates a value of a maximum charging current that can be supplied to the battery during charging of the battery on the basis of the state of the battery detected by the detection unit, and notifies a result of such calculation to a charging device.