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公开(公告)号：US20200313598A1
公开(公告)日：2020-10-01
申请号：US16825384
申请日：2020-03-20
Applicant: MAKITA CORPORATION
Inventor： Junichi KATAYAMA , Hitoshi SUZUKI
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.
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公开(公告)号：US20200212838A1
公开(公告)日：2020-07-02
申请号：US16715813
申请日：2019-12-16
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Hitoshi SUZUKI
Abstract: An electric working machine in one aspect of the present disclosure includes a motor, an information output circuit, a control circuit, and a drive stop circuit. The information output circuit outputs state information that indicates a state of the electric working machine. The control circuit executes a motor control process in accordance with a computer program. The drive stop circuit executes a motor stop operation. The motor stop operation includes disabling a permission to drive the motor by the control circuit to stop the motor in response to the state information indicating that the motor should be stopped. The motor stop operation is implemented by hardware.
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公开(公告)号：US20200067337A1
公开(公告)日：2020-02-27
申请号：US16531519
申请日：2019-08-05
Applicant: MAKITA CORPORATION
Inventor： Akihiro NAKAMOTO , Hitoshi SUZUKI
Abstract: A voltage supplier in one aspect of the present disclosure includes a first voltage generator, a second voltage generator, a first switcher, a second switcher, a first booster, and a second booster. The first booster boosts a voltage lower than a first switching drive voltage to thereby generate the first switching drive voltage, and supplies the first switching drive voltage to the first switcher on a first supply path. The second booster boosts a voltage lower than a second switching drive voltage to thereby generate the second switching drive voltage, and supplies the second switching drive voltage to the second switcher on a second supply path.
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公开(公告)号：US20150035488A1
公开(公告)日：2015-02-05
申请号：US14519684
申请日：2014-10-21
Applicant: MAKITA CORPORATION
Inventor： Tatsuki MORI , Toru YAMADA , Shinichi HIRA , Hitoshi SUZUKI
IPC: H02J7/00
CPC classification number: H02J7/007 , G05B19/0428 , G05B19/058 , G05B2219/14086 , G05B2219/24125 , G05B2219/25158 , G06F11/0757 , G06F11/076 , H02J7/0021 , H02J7/0029 , H02J7/0047 , H02J7/0093 , H02J7/027
Abstract: A charging control device includes a control unit and a monitoring unit. The control unit performs at least one of controlling charging to a rechargeable battery and monitoring a state of a rechargeable battery, while outputting a state signal which indicates an operation state of the control unit. The monitoring unit determines whether or not the operation state of the control unit is a predesignated specified operation state based on the state signal outputted from the control unit.
Abstract translation: 充电控制装置包括控制单元和监视单元。 所述控制单元在输出表示所述控制单元的运行状态的状态信号的同时，进行对可再充电电池的充电控制和监视可再充电电池的状态中的至少一个。 监视单元基于从控制单元输出的状态信号来确定控制单元的操作状态是否是预先指定的指定操作状态。
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公开(公告)号：US20140300366A1
公开(公告)日：2014-10-09
申请号：US14228850
申请日：2014-03-28
Applicant: MAKITA CORPORATION
Inventor： Tadahiko KOBAYAKAWA , Hitoshi SUZUKI , Masaaki FUKUMOTO
IPC: G01R31/36
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。
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Patent Agency Ranking
公开(公告)号：US20140217934A1
公开(公告)日：2014-08-07
申请号：US14168395
申请日：2014-01-30
Applicant: Makita Corporation
Inventor： Hitoshi SUZUKI
IPC: H02P7/285
Abstract: A motor-driven appliance includes a battery; a motor including permanent magnets as field magnets; a momentary maximum current upper limit storage unit in which a predetermined momentary maximum current upper limit is stored; a current detection unit that detects a current flowing in the motor; a current threshold setting unit that generates a current threshold based on the momentary maximum current upper limit, and outputs the generated current threshold; a current exceedance determination unit that determines whether the current detected by the current detection unit has become equal to or greater than the current threshold, and outputs an interruption signal used to interrupt a current path from the battery to the motor when the detected current has become equal to or greater than the current threshold; and a current flow interruption unit that interrupts the current path when the interruption signal is outputted from the current exceedance determination unit.
Abstract translation: 电动机具包括电池; 包括作为场磁体的永磁体的电动机; 其中存储预定的瞬时最大电流上限的瞬时最大电流上限存储单元; 电流检测单元，其检测在所述电动机中流动的电流; 电流阈值设定单元，其基于所述瞬时最大电流上限生成电流阈值，并输出所生成的电流阈值; 电流超过确定单元，其确定由电流检测单元检测到的电流是否已经变得等于或大于当前阈值，并且当检测到的电流已经变成时，输出用于中断从电池到电动机的电流路径的中断信号 等于或大于当前阈值; 以及当从当前超过判定单元输出中断信号时中断电流路径的电流流动中断单元。
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公开(公告)号：US20240014671A1
公开(公告)日：2024-01-11
申请号：US18372205
申请日：2023-09-25
Applicant: MAKITA CORPORATION
Inventor： Minoru GYODA , Hitoshi SUZUKI , Motohiro OMURA
IPC: H02J7/00 , B25F5/00 , H01M50/574
CPC classification number: H02J7/00306 , B25F5/00 , H02J7/0063 , H01M50/574
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.
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公开(公告)号：US20220142434A1
公开(公告)日：2022-05-12
申请号：US17582647
申请日：2022-01-24
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI
Abstract: A dust collector in one aspect of the present invention comprises a dust collection portion, a communication portion, and an interlock operation control portion. When the communication portion receives an interlock command transmitted from an electric working machine, the interlock operation control portion makes the dust collection portion operate interlocking with the electric working machine. The interlock operation control portion includes a storage portion, in which identification information specific to the electric working machine with which the dust collection portion is to be made to perform the interlock operation is stored.
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公开(公告)号：US20210109134A1
公开(公告)日：2021-04-15
申请号：US17064697
申请日：2020-10-07
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI
IPC: G01R19/165 , G01R31/327 , G01R31/52
Abstract: An electric working machine in one aspect of the present disclosure includes a motor, a drive current path, a resistor, a first current detector, a second current detector, and a fault determiner. The drive current path supplies the drive current to the motor. The resistor is disposed on the drive current path so as to receive the drive current. The first current detector detects a first detection value based on a first electromagnetic phenomenon with respect to the resistor. The second current detector detects a second detection value based on a second electromagnetic phenomenon with respect to the resistor. The fault determiner performs a faulty state determination based on the first detection value and the second detection value.
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公开(公告)号：US20210106194A1
公开(公告)日：2021-04-15
申请号：US17130964
申请日：2020-12-22
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI , Yuki KAWAI , Itsuku KATO , Yasutaka HOTTA
Abstract: An interlocking adapter in one aspect of the present disclosure includes a current path, an electric load, a switch, and a controller. The controller turns on and off the switch in synchronization with a change of an alternating-current voltage received from an electric outlet of an electric apparatus in response to reception of an interlocking command signal from a working machine so as to supply a load current from the electric outlet to the electric load. The controller turns on and off the switch at a specified ratio of a time every 1/2 cycle of the alternating-current voltage.
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