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公开(公告)号：US20180003773A1
公开(公告)日：2018-01-04
申请号：US15702099
申请日：2017-09-12
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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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
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。
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公开(公告)号：US20240304916A1
公开(公告)日：2024-09-12
申请号：US18279501
申请日：2022-01-20
Applicant: MAKITA CORPORATION
Inventor： Kazuya TANAKA , Tadahiko KOBAYAKAWA
IPC: H01M50/211 , H01M50/291 , H01M50/296 , H01M50/507 , H01M50/51 , H01M50/519
CPC classification number: H01M50/211 , H01M50/291 , H01M50/296 , H01M50/507 , H01M50/51 , H01M50/519 , H01M2220/30
Abstract: A battery pack comprises a plurality of pouch battery cells stacked along a first direction; a main board located in the first direction relative to the plurality of pouch battery cells and including a power port for electrical connection to an external device; a sub board located in a second direction perpendicular to the first direction relative to the plurality of pouch battery cells and connected to positive electrode tabs and negative electrode tabs of the plurality of pouch battery cells; and a connection member electrically connecting the sub board to the main board.
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公开(公告)号：US20220115892A1
公开(公告)日：2022-04-14
申请号：US17274396
申请日：2019-09-11
Applicant: MAKITA CORPORATION
Inventor： Yoshitaka ICHIKAWA , Tadahiko KOBAYAKAWA
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：US20190123569A1
公开(公告)日：2019-04-25
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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Patent Agency Ranking
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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公开(公告)号：US20240106012A1
公开(公告)日：2024-03-28
申请号：US18529529
申请日：2023-12-05
Applicant: MAKITA CORPORATION
Inventor： Tadahiko KOBAYAKAWA , Hiroki UESUGI , Hayato KANO
IPC: H01M10/42 , G01R31/3828 , H01M10/44 , H01M10/48
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：US20210274990A1
公开(公告)日：2021-09-09
申请号：US17253470
申请日：2019-05-23
Applicant: MAKITA CORPORATION
Inventor： Ryuji MITSUI , Tadahiko KOBAYAKAWA , Takuya UMEMURA , Toru YAMADA , Mamoru SAKAI
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：US20210098832A1
公开(公告)日：2021-04-01
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 , G01R31/3828 , H01M10/48
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：US20170155254A1
公开(公告)日：2017-06-01
申请号：US15361210
申请日：2016-11-25
Applicant: MAKITA CORPORATION
Inventor： Junichi KATAYAMA , Masafumi NODA , Tadahiko KOBAYAKAWA
IPC: H02J7/00
Abstract: A battery device of one aspect of the present disclosure comprises 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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