-
公开(公告)号：US20140366830A1
公开(公告)日：2014-12-18
申请号：US14374189
申请日：2013-01-23
CPC分类号： F02B63/02 , F02D11/02 , F02D41/062 , F02D2400/06 , F02M1/10 , F02N3/02 , F02N11/00 , F02N11/087 , F02N2011/0874 , F02N2200/022 , F02N2200/023 , F02N2200/063 , F02N2250/02 , F02N2300/102 , F02N2300/108 , H02P7/29
摘要： An engine-powered tool 1 includes a starter motor 106 to be driven by electric power supplied from a battery 80 to start an engine, start control means 102 to be driven by electric power from the battery 80 to control rotation of the starter motor 106, and a switching element (FET) 121 provided in series to a power supply circuit from the battery 80 to the starter motor 106, opening and closing of the switching element being controlled by the start control means. When starting the starter motor 106, PWM control is performed on the switching element and soft start in which a duty ratio is gradually increased is performed. The start control means 102 monitors temperature and battery voltage, and changes a ratio and time for increasing the duty ratio in the PWM control in accordance with the temperature and the voltage.
摘要翻译： 发动机动力工具1包括起动电动机106，由起动发动机的电池80供给的电力驱动，起动控制装置102由来自电池80的电力驱动，控制起动电动机106的转动， 以及与从电池80到起动电动机106的电源电路串联设置的开关元件（FET）121，开关元件的开闭由起动控制单元控制。 当启动起动电动机106时，对开关元件执行PWM控制，并执行占空比逐渐增加的软启动。 启动控制装置102监视温度和电池电压，并且根据温度和电压改变用于增加PWM控制中的占空比的比率和时间。
-
公开(公告)号：US20190001479A1
公开(公告)日：2019-01-03
申请号：US15749003
申请日：2016-06-27
摘要： In order to provide a tool in which a motor is assuredly prevented from being restarted when power is turned on again after a power supply interruption due to a contingency, a disk grinder 1 includes a motor 2 and a switch 12 switchable between an ON position at which the motor is driven by an operator and an OFF position at which the motor is stopped. Furthermore, first and second restart prevention means 60, 90 are provided to disable driving of the motor until the switch is turned again to the ON position when power supplied to the motor 2 falls below or under a predetermined value.
-
公开(公告)号：US10886764B2
公开(公告)日：2021-01-05
申请号：US15536946
申请日：2015-11-27
摘要： A power tool includes: a battery connecting part to which one of a first battery pack and a second battery pack having capacity smaller than that of the first battery pack is detachably attachable; a motor driven by electric power supplied from the battery pack; current detection means configured to detect a discharge current flowing from the battery pack to the motor; cut-off controlling means configured to cut off the discharge current when the discharge current becomes equal to or larger than a current threshold; and battery type discrimination means configured to discriminate the battery pack connected to the battery connecting part. The current threshold when the second battery pack is connected to the battery connecting part is lower than that when the first battery pack is connected to the battery connecting part.
-
公开(公告)号：US10744633B2
公开(公告)日：2020-08-18
申请号：US15749003
申请日：2016-06-27
摘要： In order to provide a tool in which a motor is assuredly prevented from being restarted when power is turned on again after a power supply interruption due to a contingency, a disk grinder 1 includes a motor 2 and a switch 12 switchable between an ON position at which the motor is driven by an operator and an OFF position at which the motor is stopped. Furthermore, first and second restart prevention means 60, 90 are provided to disable driving of the motor until the switch is turned again to the ON position when power supplied to the motor 2 falls below or under a predetermined value.
-
公开(公告)号：US10205198B2
公开(公告)日：2019-02-12
申请号：US15315174
申请日：2015-05-22
发明人： Yoshikazu Kawano , Nobuhiro Takano , Toshiaki Koizumi , Kazuhiko Funabashi , Kenichirou Yoshida , Takao Aradachi
IPC分类号： H02J7/00 , H01M10/42 , B25F5/00 , H01M10/44 , H01M10/48 , B60L3/00 , H01M2/10 , H02H3/05 , H02H7/08 , H02J1/00
摘要： A power tool includes a motor and control means for controlling the motor. The motor is capable of being driven by power supplied from a battery pack including a battery cell. The control means is configured to continue to rotate the motor even when a motor-halt signal is inputted from the battery pack. With this structure, the power tool can be used continuously without need to halt rotation of the motor, even when receiving a halt signal, such as an overdischarge detection signal or an overcurrent detection signal.
-
公开(公告)号：US20170012572A1
公开(公告)日：2017-01-12
申请号：US15122010
申请日：2015-01-23
发明人： Nobuhiro Takano , Yoshikazu Kawano , Toshiaki Koizumi , Hideyuki Tanimoto , Kazutaka Iwata , Shigeharu Ushiwata
摘要： To provide a work tool capable of suppress temperature rise in a motor or a switching element. The work tool includes: a motor; a switching element switchable between an ON-state and an OFF-state, the switching element allowing a current to flow through the motor during the ON-state, the switching element prohibiting a current from flowing through the motor during the OFF-state; target rotation number setting means for setting a target rotation number of the motor; rotation number controlling means for controlling the motor such that the rotation number thereof is brought in coincidence with the target rotation number by changing an ON-duration, during which the switching element is in the ON-state, in one switching period of the switching element; and temperature detecting means for detecting at least one of a temperature of the motor and a temperature of the switching element. The rotation number controlling means is capable of setting an upper limit with respect to the ON-duration on the basis of the temperature detected by the temperature detecting means and changes the ON-duration within a range not more than the upper limit.
摘要翻译： 提供能够抑制电动机或开关元件的温度上升的作业工具。 工作工具包括：电机; 开关元件，其可以在导通状态和断开状态之间切换，所述开关元件允许电流在所述接通状态期间流过所述电动机，所述开关元件禁止电流在所述关闭状态期间流过所述电动机; 目标转速设定装置，用于设定电动机的目标转速; 旋转数控制装置，用于通过在开关元件的一个开关周期期间改变开关元件处于导通状态的导通时间，使其转数与目标转数一致， ; 以及用于检测电动机的温度和开关元件的温度中的至少一个的温度检测装置。 旋转数控制装置能够基于由温度检测装置检测到的温度来设定相对于ON持续时间的上限，并且将ON持续时间改变在不大于上限的范围内。
-
公开(公告)号：US10549396B2
公开(公告)日：2020-02-04
申请号：US14292813
申请日：2014-05-30
IPC分类号： B23Q15/007 , B25F5/00 , B23Q5/027
摘要： An object of the present invention is to provide an electric power tool capable of automatically changing the rotating speed of an electric motor in accordance with operation conditions. The electric power tool 11 which carries out an operation of polishing, peel-off, cutting, or the like by swinging a tip tool 13 attached to a tool retaining 31 part within the range of predetermined angles by the drive power of the electric motor 12, wherein the electric power tool has a control device configured to indirectly detect the load of the tip tool from a current value, and to control the rotating speed of the electric motor 12 to a maximum rotating speed and a minimum rotating speed on the basis of the load of the tip tool 13.
-
公开(公告)号：US20180048173A1
公开(公告)日：2018-02-15
申请号：US15536946
申请日：2015-11-27
CPC分类号： H02J7/0063 , B25F5/00 , B25F5/02 , H01M10/486 , H01M2220/30 , H02J7/0029 , H02J2007/0067
摘要： A power tool capable of appropriately performing discharge control with respect to respective battery packs whose battery types are different from each other. The power tool includes: a battery connecting part to which one of a first battery pack and a second battery pack having capacity smaller than that of the first battery pack is detachably attachable; a motor driven by electric power supplied from the battery pack; current detection means configured to detect a discharge current flowing from the battery pack to the motor; cut-off controlling means configured to cut off the discharge current when the discharge current becomes equal to or larger than a current threshold; and battery type discrimination means configured to discriminate the battery pack connected to the battery connecting part. The current threshold when the second battery pack is connected to the battery connecting part is lower than that when the first battery pack is connected to the battery connecting part.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.017 秒)
