公开(公告)号：US09502699B2

公开(公告)日：2016-11-22

申请号：US14096795

申请日：2013-12-04

Applicant: MAKITA CORPORATION

Inventor： Tsuyoshi Murayama ,  Hideyuki Taga ,  Kazutoshi Ogino ,  Hidekazu Hayashi ,  Hitoshi Suzuki

IPC: H01M10/46 ,  H01M2/10 ,  H01M2/34 ,  H01M10/42 ,  H01M6/42

CPC classification number: H01M2/1022 ,  H01M2/347 ,  H01M6/42 ,  H01M10/425

Abstract: One aspect according to the present invention includes a battery pack and a shock absorbing device interposed between a battery cell holder and a case body and capable of keeping the battery cell holder and the battery cells not to directly contact with an inner surface of the case body.

Abstract translation: 根据本发明的一个方面包括电池组和设置在电池单元保持器和壳体之间并且能够保持电池单元保持器和电池单元不与壳体的内表面直接接触的减震装置 。

公开(公告)号：US09341681B2

公开(公告)日：2016-05-17

申请号：US14228850

申请日：2014-03-28

Applicant: MAKITA CORPORATION

Inventor： Tadahiko Kobayakawa ,  Hitoshi Suzuki ,  Masaaki Fukumoto

IPC: G01R31/36 ,  H01M10/48 ,  H01M10/42 ,  H01M10/44 ,  H02J7/00 ,  G01R19/12

CPC classification number: G01R31/3624 ,  G01R19/12 ,  H01M10/4257 ,  H01M10/441 ,  H01M10/48 ,  H01M10/482 ,  H01M10/486 ,  H01M2010/4278 ,  H02J7/0047

Abstract: An electrical device system having a battery pack, an electrical device, and a charging device, includes: a current detecting unit that detects a battery current flowing through the battery during a charge to or a discharge from the battery; a battery state detecting unit that detects at least one of a battery voltage and a temperature of a heat generating unit; and a determining unit that estimates an amount of change in at least one of the battery voltage and the temperature of the heat generating unit, based on the battery current, and calculates an amount of actual change in at least one of the battery voltage and the temperature of the heat generating unit, wherein the determining unit determines that the current detecting unit is abnormal, when the difference between the calculated amount of actual change and the estimated amount of change is a default value or more.

Abstract translation: 一种具有电池组，电气装置和充电装置的电气装置系统，包括：电流检测单元，其在从电池充电到电池或从电池放电期间检测流过电池的电池电流; 电池状态检测单元，其检测发电单元的电池电压和温度中的至少一个; 以及确定单元，其基于所述电池电流来估计所述电池电压和所述发热单元的温度中的至少一个的变化量，并且计算所述电池电压和所述电池电压中的至少一个的实际变化量 当所述计算出的实际变化量与所述估计变化量之间的差为默认值以上时，所述确定单元判定所述电流检测单元异常。

公开(公告)号：US20140361740A1

公开(公告)日：2014-12-11

申请号：US14369710

申请日：2012-12-25

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Kosuke Ito ,  Akira Naito

IPC: H02J7/00 ,  H02J7/02

CPC classification number: H02J7/0044 ,  H02J5/00 ,  H02J5/005 ,  H02J7/0021 ,  H02J7/0027 ,  H02J7/0045 ,  H02J7/02 ,  H02J7/025 ,  H02J50/10 ,  H02J50/40 ,  H02J50/80 ,  H02J2007/0001 ,  H02J2007/0096

Abstract: A battery system for a power tool includes two or more battery packs (12), at least one battery holder (14) adapted to detachably engage two or more of the battery packs and a charger (16, 216, 316, 416) adapted to detachably engage the battery holder and to simultaneously electrically communicate with two or more of the battery packs while the at least one battery holder engages both the charger and the battery packs.

Abstract translation: 一种用于电动工具的电池系统包括两个或更多个电池组（12），适于可拆卸地接合两个或更多个电池组的至少一个电池座（14），以及一个充电器（16,216,316,416） 可拆卸地接合电池座并且同时与两个或更多个电池组电连通，同时至少一个电池座与充电器和电池组接合。

公开(公告)号：US20130164589A1

公开(公告)日：2013-06-27

申请号：US13770332

申请日：2013-02-19

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Ota ,  Kiyoshi Nishibe ,  Hitoshi Suzuki

IPC: H01M2/10

CPC classification number: H01M2/1055 ,  B23B2260/024 ,  B25F5/00 ,  H01M2/10 ,  H01M2/1022 ,  H01M2/1027 ,  H01M2/1033 ,  H01M2/1061 ,  H01M2/34 ,  H01M6/42 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/48 ,  H01M10/488 ,  H01M2200/103 ,  H01M2220/30 ,  H02J7/0021 ,  H02J7/0045 ,  H02J7/0063 ,  H02J2007/004

Abstract: An electric power tool comprises a main body supporting a tool and an electric motor housed in the main body for driving the tool. A plurality of first battery interfaces is configured to removably receive or attach a plurality of first battery packs and to electrically connect the plurality of attached first battery packs in series with the electric motor. A plurality of indicators is configured to communicate information concerning the respective conditions of the plurality of attached first battery packs. The plurality of indicators is arranged such that all of the indicators are simultaneously viewable by a user of the electric power tool.

公开(公告)号：US12011813B2

公开(公告)日：2024-06-18

申请号：US17014012

申请日：2020-09-08

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Seitaro Hayashi ,  Motohiro Omura ,  Itsuku Kato

IPC: H02H7/097 ,  B25F5/00 ,  H02P6/12 ,  H02P6/16 ,  H02P6/22 ,  H02P6/24 ,  H02P29/028

CPC classification number: B25F5/001 ,  H02H7/097 ,  H02P29/028 ,  H02P6/12 ,  H02P6/16 ,  H02P6/22 ,  H02P6/24

Abstract: An electric work machine (1; 110; 120; 130), such as a power tool, includes a motor (11) having a rotor, a drive part (13) that supplies electric currents to drive the motor, a rotational-direction selection part (17), and a motor-control part (14; 31, 32, 40, 50, 60; 14, 40, 60, 73, 80; 14, 60, 91). The rotational-direction selection part is configured for manually setting (selecting) the rotational direction of the rotor and outputs first and second setting signals that each indicate the set (selected) rotational direction. The motor-control part controls the drive part such that the rotor rotates in the rotational direction indicated by the first setting signal and/or the second setting signal. In response to a determination that the rotational directions indicated by the first and second setting signals are inconsistent, the motor-control part stops or prevents the drive of the motor.

公开(公告)号：US20240146079A1

公开(公告)日：2024-05-02

申请号：US18409182

申请日：2024-01-10

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Ota ,  Kiyoshi Nishibe ,  Hitoshi Suzuki

IPC: H02J7/00 ,  B25F5/00 ,  H01M10/48 ,  H01M50/213 ,  H01M50/244 ,  H01M50/247 ,  H01M50/267 ,  H01M50/296 ,  H01M50/574

CPC classification number: H02J7/00309 ,  B25F5/00 ,  H01M10/48 ,  H01M10/488 ,  H01M50/213 ,  H01M50/244 ,  H01M50/247 ,  H01M50/267 ,  H01M50/296 ,  H01M50/574 ,  H02J7/0045 ,  H02J7/0063 ,  H02J7/007182 ,  B23B2260/024 ,  H01M6/42 ,  H01M2220/30

Abstract: An electric power tool includes a main body supporting a tool. An electric motor is housed in the main body and configured to drive the tool. A plurality of battery interfaces is integrally formed on the main body, each battery interface having a positive battery terminal and a negative battery terminal. Each battery interface is configured to removably receive a positive battery terminal and a negative battery terminal of a corresponding one of a plurality of battery packs and to electrically connect the plurality of attached battery packs in series with the electric motor. Each of the plurality of battery packs comprises a movable latch configured to engage a corresponding engagement structure defined on or near the corresponding battery interface.

公开(公告)号：US11824473B2

公开(公告)日：2023-11-21

申请号：US17462820

申请日：2021-08-31

Applicant: MAKITA CORPORATION

Inventor： Hitoshi Suzuki ,  Akihiro Nakamoto

IPC: H02P27/06 ,  B25F5/02 ,  B25B21/02

CPC classification number: H02P27/06 ,  B25F5/02 ,  B25B21/02

Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.

公开(公告)号：US11811249B2

公开(公告)日：2023-11-07

申请号：US16890518

申请日：2020-06-02

Applicant: MAKITA CORPORATION

Inventor： Minoru Gyoda ,  Hitoshi Suzuki ,  Motohiro Omura

IPC: H02J7/00 ,  B25F5/00 ,  H01M50/574

CPC classification number: H02J7/00306 ,  B25F5/00 ,  H01M50/574 ,  H02J7/0063

Abstract: A battery-powered system includes a battery pack (10; 71; 81) connected to an electrical equipment (30; 50; 76; 86). The battery pack includes a first positive electrode terminal (11), a first negative electrode terminal (12), a first communication terminal (13), a first data input circuit (23), and a first limiting circuit (D11; D72; D82) that limits a flow of electric current in a direction from the first negative electrode terminal to the first communication terminal via the first data input circuit. The connected equipment includes a second positive electrode terminal (31; 51), a second negative electrode terminal (32; 52), a second communication terminal (33; 53), a second data input circuit (43; 63; 77; 87), and a second limiting circuit (D31; D51; D77; D87) that limits a flow of electric current in a direction from the second negative electrode terminal to the second communication terminal via the second data input circuit.

公开(公告)号：US11721990B2

公开(公告)日：2023-08-08

申请号：US17393780

申请日：2021-08-04

Applicant: MAKITA CORPORATION

Inventor： Nobuyasu Furui ,  Hitoshi Suzuki ,  Masaaki Fukumoto ,  Takuya Umemura ,  Kosuke Ito ,  Hitoshi Sengiku ,  Shuji Yoshikawa ,  Tatsuya Nagahama

IPC: H02J7/00 ,  B25F5/02 ,  B25F3/00 ,  B25F5/00 ,  G05B13/02 ,  G08C17/02

CPC classification number: H02J7/0042 ,  B25F3/00 ,  B25F5/00 ,  B25F5/02 ,  G05B13/024 ,  G08C17/02 ,  H02J7/00

Abstract: A power tool includes a power tool housing accommodating a motor; a battery pack interface electrically connected to the motor and being configured to be physically and electrically connected to and disconnected from a power tool interface of a battery pack; and a wireless communicator configured to be attached to or detached from the power tool housing. The wireless communicator wirelessly transmits data between the power tool and an external device using radio waves. In addition, the power tool housing includes a receptacle opening configured to accommodate the wireless communicator within the power tool housing such that no part of the wireless communicator projects or protrudes beyond an outer surface or contour of the power tool housing.

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.