公开(公告)号：US11925307B2

公开(公告)日：2024-03-12

申请号：US15733960

申请日：2019-05-23

Applicant: MAKITA CORPORATION

Inventor： Ryuji Mitsui ,  Tadahiko Kobayakawa ,  Takuya Umemura ,  Toru Yamada ,  Mamoru Sakai

IPC: H01M10/46 ,  A47L5/24 ,  A47L9/28 ,  G01R31/382 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00

CPC classification number: A47L9/2884 ,  A47L5/24 ,  G01R31/382 ,  H01M10/443 ,  H01M10/46 ,  H01M10/48 ,  H01M10/486 ,  H02J7/0063 ,  H02J7/00712

Abstract: A rechargeable cleaner includes a body, a rechargeable battery, a charger, and a body controller. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery. The body controller is disposed in the body. The body controller controls at least one of a charging current and a charging voltage based on cell voltage information indicating a cell voltage, cell temperature information indicating a cell temperature, and battery identification information for identifying the battery that are acquired from the battery, and based on charger identification information for identifying the charger acquired from the charger.

公开(公告)号：US10466305B2

公开(公告)日：2019-11-05

申请号：US15464789

申请日：2017-03-21

Applicant: MAKITA CORPORATION

Inventor： Toru Yamada ,  Koji Takahashi

IPC: G01R31/36 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H02J7/00 ,  G01R31/385 ,  G01R31/371

Abstract: One aspect of the present disclosure is an inspection apparatus of a battery pack for an on-site electric apparatus, which comprises a coupler, a discharger, a changer, a discharge performing device, a voltage value detector, and a calculator. The changer detects one of a nominal voltage value of the battery pack coupled to the coupler and a voltage value of a battery in the battery pack, and reduces a discharge time of the battery and/or a discharge current value of the battery as the detected value is larger.

公开(公告)号：US12021399B2

公开(公告)日：2024-06-25

申请号：US16868055

申请日：2020-05-06

Applicant: MAKITA CORPORATION

Inventor： Hayato Kano ,  Toru Yamada ,  Minoru Gyoda

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

CPC classification number: H02J7/00036 ,  H01M10/425 ,  H01M10/44 ,  H01M10/46 ,  H02J7/0013 ,  H02J7/0071 ,  H01M2010/4271 ,  H01M2010/4278

Abstract: A battery pack includes one or more battery cells, a control circuit, a communication circuit, and a switching control circuit. The switching control circuit is configured to switch the control circuit from a controlled-operation state to a low-power operation state in response to a communication-stop time exceeding a state-switching threshold, the communication-stop time being a duration of a state in which the control circuit or the communication circuit detects no communication with the charger, and the state-switching threshold being determined in advance, so that power consumption of the control circuit can be reduced upon completion of a charging operation.

公开(公告)号：US11980335B2

公开(公告)日：2024-05-14

申请号：US17253470

申请日：2019-05-23

Applicant: MAKITA CORPORATION

Inventor： Ryuji Mitsui ,  Tadahiko Kobayakawa ,  Takuya Umemura ,  Toru Yamada ,  Mamoru Sakai

IPC: H02J7/00 ,  A47L5/22 ,  A47L5/24 ,  A47L9/28 ,  H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  H02J7/04

CPC classification number: A47L9/2873 ,  A47L5/225 ,  A47L5/24 ,  A47L9/2805 ,  A47L9/2836 ,  A47L9/2884 ,  H01M10/44 ,  H01M10/46 ,  H01M10/48 ,  H02J7/0047 ,  H02J7/04 ,  H01M2220/30 ,  H02J7/0042

Abstract: A rechargeable cleaner includes a body, a rechargeable battery, and a charger. The body is configured to generate suction power capable of sucking dust together with air using a motor. The rechargeable battery is configured to supply electric power to the motor. The charger is configured to charge the battery at a charging rate of 3 C or higher and lower than 10 C.

公开(公告)号：US10756555B2

公开(公告)日：2020-08-25

申请号：US15880441

申请日：2018-01-25

Applicant: MAKITA CORPORATION

Inventor： Toru Yamada ,  Takayoshi Endo ,  Hiroki Oka

IPC: H02J7/00 ,  B25F5/00 ,  G01K3/00 ,  G01R31/34 ,  H02J7/02 ,  G01K1/14 ,  G01R31/36 ,  G05D23/19 ,  H01M2/34 ,  H01R31/06

Abstract: A power supply adapter according to one aspect of the present disclosure includes a power cord, a power-source attachment portion, a working-machine attachment portion, a temperature detector, and an overheat determiner. The temperature detector is configured to detect temperature of the power cord and to output a detection signal indicating the temperature detected. The overheat determiner is configured to determine that the power cord is in an overheated state based on the detection signal from the temperature detector and to output an overheat determination result indicating that the power cord is in the overheated state.

公开(公告)号：US11251503B2

公开(公告)日：2022-02-15

申请号：US16675321

申请日：2019-11-06

Applicant: MAKITA CORPORATION

Inventor： Toru Yamada ,  Hideyuki Taga

IPC: H01M50/502 ,  H01M50/213

Abstract: A plurality of battery cells of a battery pack may include at least one first battery cell arranged in a first row, at least one second battery cell arranged in a second row adjacent to the first row, at least one third battery cell arranged in a third row adjacent to the second row, and at least one fourth battery cell arranged in a fourth row adjacent to the third row. The at least one first battery cell and the at least one second battery cell are connected in series. Each of the at least one first battery cell is connected in parallel with a corresponding one of the at least one third battery cell. Each of the at least one second battery cell is connected in parallel with a corresponding one of the at least one fourth battery cell.

公开(公告)号：US10797494B2

公开(公告)日：2020-10-06

申请号：US15880441

申请日：2018-01-25

Applicant: MAKITA CORPORATION

Inventor： Toru Yamada ,  Takayoshi Endo ,  Hiroki Oka

IPC: H02J7/00 ,  B25F5/00 ,  G01K3/00 ,  G01R31/34 ,  H02J7/02 ,  G01K1/14 ,  G01R31/36 ,  G05D23/19 ,  H01M2/34 ,  H01R31/06

Abstract: A power supply adapter according to one aspect of the present disclosure includes a power cord, a power-source attachment portion, a working-machine attachment portion, a temperature detector, and an overheat determiner. The temperature detector is configured to detect temperature of the power cord and to output a detection signal indicating the temperature detected. The overheat determiner is configured to determine that the power cord is in an overheated state based on the detection signal from the temperature detector and to output an overheat determination result indicating that the power cord is in the overheated state.

公开(公告)号：US12057719B2

公开(公告)日：2024-08-06

申请号：US17275504

申请日：2019-09-12

Applicant: MAKITA CORPORATION

Inventor： Yoshitaka Ichikawa ,  Akihiro Nakamoto ,  Minoru Gyoda ,  Hayato Kano ,  Toru Yamada ,  Hitoshi Suzuki

IPC: H02P1/00 ,  H01M10/48 ,  H02J7/00 ,  H02P3/00 ,  H02P3/06 ,  H02P5/00

CPC classification number: H02J7/0029 ,  H01M10/48 ,  H02J7/00032 ,  H02J7/0063 ,  H02P3/06

Abstract: A battery pack is configured to supply electric power to an electric work machine, such as a power tool or outdoor power equipment. The battery pack includes a first battery-signal terminal and a second battery-signal terminal. The first battery-signal terminal outputs, to the electric work machine, a first signal indicating that discharging is to be prohibited or permitted. The second battery-signal terminal outputs, to the electric work machine, a second signal indicating that discharging is to be prohibited or permitted. Thus, two communication paths are provided for transmitting signals to permit or prohibit discharging of the battery pack.

公开(公告)号：US09647479B2

公开(公告)日：2017-05-09

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 ,  G06F11/07 ,  G05B19/05 ,  G05B19/042 ,  H02J7/02

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.