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    TECHNIQUE FOR CONTROLLING MOTOR IN HANDHELD ELECTRIC WORK MACHINE
    21.
    发明公开
    TECHNIQUE FOR CONTROLLING MOTOR IN HANDHELD ELECTRIC WORK MACHINE 审中-公开

    公开(公告)号：US20230166379A1

    公开(公告)日：2023-06-01

    申请号：US17990884

    申请日：2022-11-21

    Applicant: MAKITA CORPORATION

    Inventor： Hitoshi SUZUKI

    IPC: B24B23/02 ,  H02K7/14 ,  H02K11/33

    CPC classification number: B24B23/02 ,  H02K7/145 ,  H02K11/33

    Abstract: One aspect of the present disclosure provides an electric work machine including a motor, a motor driver, an output shaft, a housing, two or more measurement devices, and a control circuit. The housing includes a handle fixed thereto or is configured such that the handle is detachably attached thereto. The two or more measurement devices (i) receive two or more loads from the handle fixed or attached to the housing, and also (ii) measure the two or more loads received. The control circuit adjusts a magnitude of the electric power, based on the two or more loads measured.

    CART
    22.
    发明申请
    CART 有权

    公开(公告)号：US20230023514A1

    公开(公告)日：2023-01-26

    申请号：US17856340

    申请日：2022-07-01

    Applicant: MAKITA CORPORATION

    Inventor： Kunihisa SHIMA ,  Hitoshi SUZUKI ,  Ryo UMEMOTO

    IPC: B60L15/20 ,  B62B5/00 ,  H02P3/22 ,  H02P5/74

    Abstract: A cart may include: a driving wheel; a motor configured to rotate the driving wheel; a motor drive circuit configured to drive the motor; a motor brake circuit configured to electrically brake the motor; a rotation speed sensor configured to detect a rotation speed of the motor; and a control device configured to control the motor via the motor drive circuit and the motor brake circuit based on a target rotation speed of the motor and the rotation speed detected by the rotation speed sensor. The motor brake circuit may include an electronically variable resistance element configured to operate in a linear mode and a switching mode in response to a control input signal. The motor brake circuit may be configured to operate. the electronically variable resistance element in the linear mode when braking the motor.

    TECHNIQUE FOR MEASURING ELECTRIC CURRENT FLOWING IN ELECTRIC POWERED WORK MACHINE
    23.
    发明申请
    TECHNIQUE FOR MEASURING ELECTRIC CURRENT FLOWING IN ELECTRIC POWERED WORK MACHINE 有权

    公开(公告)号：US20220131442A1

    公开(公告)日：2022-04-28

    申请号：US17510846

    申请日：2021-10-26

    Applicant: MAKITA CORPORATION

    Inventor： Hitoshi SUZUKI

    IPC: H02K7/14 ,  H02K11/33 ,  H03F3/45 ,  B23D45/16 ,  B23D47/12

    Abstract: An electric powered work machine according to one aspect of the present disclosure includes: a tool; a motor; a manual switch; an electric current path; a shunt resistor; a reference voltage generation circuit; and an electric current measurement circuit. The reference voltage generation circuit (i) generates a reference voltage having a first magnitude in response to a first condition being established, and (ii) generates the reference voltage having a second magnitude in response to the first condition not being established. The electric current measurement circuit (i) receives the reference voltage and a measured voltage, and (ii) outputs an output voltage based on the reference voltage and the measured voltage.

    ELECTRIC WORKING MACHINE, AND METHOD FOR SUPPLYING ELECTRIC POWER TO CONTROLLER OF ELECTRIC WORKING MACHINE
    24.
    发明申请
    ELECTRIC WORKING MACHINE, AND METHOD FOR SUPPLYING ELECTRIC POWER TO CONTROLLER OF ELECTRIC WORKING MACHINE 有权

    公开(公告)号：US20210399668A1

    公开(公告)日：2021-12-23

    申请号：US17462820

    申请日：2021-08-31

    Applicant: MAKITA CORPORATION

    Inventor： Hitoshi SUZUKI ,  Akihiro NAKAMOTO

    IPC: H02P27/06 ,  B25F5/02

    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.

    CHARGE CONTROL DEVICE, BATTERY PACK, AND CHARGER
    26.
    发明申请
    CHARGE CONTROL DEVICE, BATTERY PACK, AND CHARGER 有权
    充电控制装置，电池组和充电器

    公开(公告)号：US20150372512A1

    公开(公告)日：2015-12-24

    申请号：US14741788

    申请日：2015-06-17

    Applicant: MAKITA CORPORATION

    Inventor： Takuya UMEMURA ,  Tadahiko KOBAYAKAWA ,  Hitoshi SUZUKI

    IPC: H02J7/00 ,  G01R31/36 ,  G01K13/00

    CPC classification number: G01R31/3606 ,  G01K13/00 ,  H02J7/0004 ,  H02J7/0008 ,  H02J7/0011 ,  H02J7/0021 ,  H02J7/0044 ,  H02J7/0073 ,  H02J7/0075 ,  H02J7/041 ,  H02J7/047 ,  H02J2007/0067

    Abstract: A charge control device of one example of the present invention comprises a temperature detection unit, a storage unit, and an upper limit setting unit. The storage unit stores a reference current characteristic and at least one of a first current characteristic and a second current characteristic as a charging current characteristic, and stores a reference voltage characteristic and at least one of a first voltage characteristic and a second voltage characteristic as a charging voltage characteristic. The upper limit setting unit selects a characteristic used to set upper limits of a charging current and a charging voltage to the battery from among a plurality of the charging current characteristics and a plurality of the charging voltage characteristics stored in the storage unit.

    Abstract translation: 本发明的一个示例的充电控制装置包括温度检测单元，存储单元和上限设定单元。 存储单元存储参考电流特性和第一电流特性和第二电流特性中的至少一个作为充电电流特性，并将参考电压特性和第一电压特性和第二电压特性中的至少一个存储为 充电电压特性。 上限设定单元从存储在存储单元中的多个充电电流特性和多个充电电压特性中选择用于设定充电电流的上限和充电电压的特性。

    MOTOR-DRIVEN APPLIANCE AND MAIN BODY THEREOF
    27.
    发明申请
    MOTOR-DRIVEN APPLIANCE AND MAIN BODY THEREOF 审中-公开
    电机驱动装置及其主体

    公开(公告)号：US20150357853A1

    公开(公告)日：2015-12-10

    申请号：US14763574

    申请日：2013-12-25

    Applicant: MAKITA CORPORATION

    Inventor： Hitoshi SUZUKI ,  Masafumi NODA ,  Tomoo MURAMATSU ,  Toru YAMADA ,  Takuya KUSAKAWA

    IPC: H02J7/00 ,  H02P29/00

    CPC classification number: H02J7/0063 ,  B25F5/00 ,  H02J7/0029 ,  H02J2007/005 ,  H02J2007/0067 ,  H02P7/00 ,  H02P29/00

    Abstract: A main body of a motor-driven appliance is configured such that a plurality of battery packs are attachable thereto. Each of the battery packs contains a battery. The main body of the motor-driven appliance acquires, from each of the plurality of battery packs, discharge capacity information indicating a discharge capacity of the contained battery. The main body of the motor-driven appliance sets at least one control parameter to control discharge from a power source to a motor, in accordance with at least the discharge capacity information of a battery with a lowest discharge capacity, among the acquired respective discharge capacity information.

    Abstract translation: 马达驱动器具的主体被构造为使得多个电池组能够附接到其上。 每个电池组都包含一个电池。 所述电动机具的主体从所述多个电池组中的每一个获取表示所述容纳电池的放电容量的放电容量信息。 根据至少一个具有最低放电容量的电池的放电容量信息，所获取的各个放电容量中的至少一个控制参数用于控制从电源到电动机的放电的至少一个控制参数 信息。

    MEASUREMENT SYSTEM
    28.
    发明申请
    MEASUREMENT SYSTEM 有权
    测量系统

    公开(公告)号：US20140019074A1

    公开(公告)日：2014-01-16

    申请号：US13939485

    申请日：2013-07-11

    Applicant: MAKITA CORPORATION

    Inventor： Masafumi NODA ,  Hitoshi SUZUKI ,  Masaaki FUKUMOTO ,  Takuya UMEMURA

    IPC: G01R31/36

    CPC classification number: G01R31/3648 ,  G01R31/3606 ,  H02J7/0004 ,  H02J7/0021 ,  H02J2007/0096 ,  H02J2007/0098

    Abstract: A measurement system according to one aspect of the present invention includes a battery pack and at least one type of connected device to which the pack is connected. The pack includes a first detection device detecting a predetermined physical quantity in the pack and having a predetermined measurement range. The connected device includes a second detection device detecting a physical quantity the same as the predetermined physical quantity and having a measurement range different from the range of the first detection device. One of the pack and the connected device includes a receiving device and a measurement processing device that performs a predetermined measurement process by using one of: a detection-value-related information received by the receiving device; and a detection result by one device of the first detection device and the second detection device, the one device being provided in one of the pack and the connected device.

    Abstract translation: 根据本发明的一个方面的测量系统包括电池组和连接有该组件的至少一种连接装置。 该包装包括检测包装中预定物理量并具有预定测量范围的第一检测装置。 所连接的装置包括检测与预定物理量相同的物理量并具有与第一检测装置的范围不同的测量范围的第二检测装置。 包装和连接装置中的一个包括接收装置和测量处理装置，其通过使用由接收装置接收的检测值相关信息之一执行预定的测量处理; 以及由第一检测装置和第二检测装置的一个装置的检测结果，一个装置设置在包和连接装置之一中。

    BATTERY-POWERED DEVICE
    29.
    发明申请
    BATTERY-POWERED DEVICE 有权

    公开(公告)号：US20250015543A1

    公开(公告)日：2025-01-09

    申请号：US18754820

    申请日：2024-06-26

    Applicant: MAKITA CORPORATION

    Inventor： Akira NIWA ,  Hitoshi SUZUKI

    IPC: H01R13/66 ,  H01R13/26 ,  H01R13/447 ,  H01R31/06

    Abstract: A battery-powered device in one aspect of the present disclosure includes a battery port, an electric load, a controller, and a terminal block. To the battery port, a battery pack including a first battery is attached. The electric load operates with first electric power of the first battery. The terminal block includes two or more machine-side terminals, a battery holder, and a wireless communicator. The two or more machine-side terminals are coupled to two or more battery-side terminals of the battery pack, respectively. In the battery holder, a second battery is removably held. The wireless communicator (i) receives second electric power from the second battery (ii) and performs a wireless communication.

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