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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
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.
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公开(公告)号：US10222424B2
公开(公告)日：2019-03-05
申请号：US15702099
申请日：2017-09-12
Applicant: MAKITA CORPORATION
Inventor： Takuya Umemura , Tadahiko Kobayakawa , Hitoshi Suzuki
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.
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公开(公告)号：US11876190B2
公开(公告)日：2024-01-16
申请号：US17022193
申请日：2020-09-16
Applicant: MAKITA CORPORATION
Inventor： Tadahiko Kobayakawa , Hiroki Uesugi , Hayato Kano
IPC: H01M10/42 , H01M10/44 , H01M10/48 , G01R31/3828
CPC classification number: H01M10/425 , G01R31/3828 , H01M10/44 , H01M10/486 , H01M2010/4278
Abstract: A battery pack in one aspect of the present disclosure includes a battery and a controller provided with a counter value. During discharge of the battery pack, the controller calculates an addition value in accordance with a total number of use of the battery pack under a specified condition. The controller updates the counter value by adding the addition value. The controller prohibits the discharge of the battery pack in response to the counter value reaching a protection threshold.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US09356464B2
公开(公告)日：2016-05-31
申请号：US14191744
申请日：2014-02-27
Applicant: MAKITA CORPORATION
Inventor： Miki Tomiyasu , Tadahiko Kobayakawa , Hiroshi Hanai
CPC classification number: H02J7/0091 , H02J2007/0049
Abstract: A battery pack includes: a connecting portion connected to a battery charger; a battery chargeable by the battery charger connected to the connecting portion; an environment temperature detecting element detecting an environment temperature around the battery; and a control circuit. The control circuit periodically detects the environment temperature via the environment temperature detecting element and controls the battery charger to suspend starting of charging the battery or to temporarily discontinue charging the battery when a variation of the environment temperature detected exceeds a predetermined range, when the battery charger is connected to the connecting portion.
Abstract translation: 电池组包括：连接到电池充电器的连接部分; 由连接到连接部分的电池充电器充电的电池; 检测电池周围环境温度的环境温度检测元件; 和控制电路。 控制电路通过环境温度检测元件周期性地检测环境温度，并且当检测到的环境温度的变化超过预定范围时，控制电池充电器暂停对电池充电的开始或暂时中断对电池的充电，当电池充电器 连接到连接部分。
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公开(公告)号：US12191684B2
公开(公告)日：2025-01-07
申请号：US18126584
申请日：2023-03-27
Applicant: MAKITA CORPORATION
Inventor： Tadahiko Kobayakawa , Hayato Kano , Yoshitaka Ichikawa
Abstract: A system in one aspect of the present disclosure includes a battery pack and an electric work machine. The battery pack includes a battery, a first interface, a first memory and a first controller. The first controller is configured to transmit battery data identifying a type of the battery pack. The electric work machine includes a motor, a second interface, a switching element, a manual switch, a second memory and a second controller. The second controller is configured to transmit electric apparatus data identifying a type of the electric work machine.
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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
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.
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公开(公告)号：US11979049B2
公开(公告)日：2024-05-07
申请号：US17274396
申请日：2019-09-11
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka Ichikawa , Tadahiko Kobayakawa
CPC classification number: H02J7/00714 , A01D34/68 , A01D34/78 , H01M10/48 , H02J7/0044 , H02K7/145 , H02K11/33
Abstract: An electric work machine (1), such as a power tool, comprises a motor (50), a manipulatable part (12) such as a trigger switch, and a control part (36). The motor is energized with electric current supplied by a battery pack (22). By manipulating the manipulatable part, the control part energizes the motor. The control part also acquires information concerning the state of the battery from the battery pack, and, if appropriate based on the information obtained from the battery pack, takes measures (such as limiting a discharge current) to restrain, delay and possibly avert the performance of a protection (discharge-prohibited) operation by the battery pack.
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公开(公告)号：US09784795B2
公开(公告)日：2017-10-10
申请号：US14741788
申请日：2015-06-17
Applicant: MAKITA CORPORATION
Inventor： Takuya Umemura , Tadahiko Kobayakawa , Hitoshi Suzuki
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.
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