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1.发明授权公开(公告)号：US08933653B2
公开(公告)日：2015-01-13
申请号：US13633325
申请日：2012-10-02
IPC分类号： H02P27/08
CPC分类号： H02P6/00
摘要： A motor current detection apparatus in the present invention includes: a current detection unit, a first filter, and a second filter. The detection unit detects a conduction current flowing from a battery to a brushless motor and outputs a conduction current signal corresponding to the detected conduction current. The first filter extracts a first current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a frequency band equal to or lower than a predetermined first cutoff frequency. The second filter extracts a second current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a predetermined frequency band within a frequency band equal to or lower than a predetermined second cutoff frequency higher than the first cutoff frequency and having the second cutoff frequency as a maximum value.
摘要翻译： 本发明的电动机电流检测装置包括：电流检测单元，第一滤波器和第二滤波器。 检测单元检测从电池流向无刷电动机的导通电流，并输出与检测到的导通电流对应的导通电流信号。 第一滤波器提取包含在从检测单元输出的导通电流信号中的第一电流信号，并且是等于或低于预定第一截止频率的频带中的信号分量。 第二滤波器提取包括在从检测单元输出的导通电流信号中的第二电流信号，并且是在等于或低于高于第一截止值的预定第二截止频率的频带内的预定频带中的信号分量 并具有第二截止频率作为最大值。
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公开(公告)号：US20130314007A1
公开(公告)日：2013-11-28
申请号：US13983716
申请日：2012-02-07
IPC分类号： H02P6/00
摘要： An electric power tool is provided with a three-phase brushless motor that drives a tool and a motor driver that drives the three-phase brushless motor with square voltage waves. The motor driver is able to set a conduction angle to a value that is equal to or more than 130 degrees but not more than 180 degrees, and especially to change the conduction angle among at least two values that are equal to or more than 130 degrees but not more than 180 degrees. In this configuration, it may be preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller. On the other hand, it may be also preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller.
摘要翻译： 电动工具具有驱动工具的三相无刷电动机和以方波电压驱动三相无刷电动机的电动机驱动器。 电机驱动器能够将导通角设定为等于或大于130度但不超过180度的值，特别是改变至少两个等于或大于130度的值之间的导通角 但不超过180度。 在这种构造中，当施加到工具的负载变得更小时，优选地将导通角设定为更大的值。 另一方面，当施加到工具的负载变得更小时，也可以将导通角设定为较大的值。
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公开(公告)号：US09381584B2
公开(公告)日：2016-07-05
申请号：US13308787
申请日：2011-12-01
摘要： A cordless electric power tool comprises a motor that drives a tool, a battery that supply electric power to the motor and a motor drive circuit that is disposed between the motor and the battery. The motor is a three-phase brushless motor, and the battery has a nominal voltage of 18 volts. An overall electric efficiency of the cordless electric power tool becomes at least 70 percent when a value of current passing through the motor becomes at least 35 amperes but no more than 45 amperes and the cordless electric power tool outputs power of at least 450 watts but no more than 550 watts.
摘要翻译： 无绳电动工具包括驱动工具的电动机，向电动机供电的电池和设置在电动机和电池之间的电动机驱动电路。 电机是三相无刷电机，电池的额定电压为18伏。 当通过电动机的电流值至少为35安培但不超过45安培时，无绳电动工具的整体电效率至少为70％，无绳电动工具输出功率至少为450瓦，但没有 超过550瓦。
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公开(公告)号：US09154062B2
公开(公告)日：2015-10-06
申请号：US13983716
申请日：2012-02-07
摘要： An electric power tool is provided with a three-phase brushless motor that drives a tool and a motor driver that drives the three-phase brushless motor with square voltage waves. The motor driver is able to set a conduction angle to a value that is equal to or more than 130 degrees but not more than 180 degrees, and especially to change the conduction angle among at least two values that are equal to or more than 130 degrees but not more than 180 degrees. In this configuration, it may be preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller. On the other hand, it may be also preferable that the conduction angle is set to a larger value as a load applied to the tool becomes smaller.
摘要翻译： 电动工具具有驱动工具的三相无刷电动机和以方波电压驱动三相无刷电动机的电动机驱动器。 电机驱动器能够将导通角设定为等于或大于130度但不超过180度的值，特别是改变至少两个等于或大于130度的值之间的导通角 但不超过180度。 在这种构造中，当施加到工具的负载变得更小时，优选地将导通角设定为更大的值。 另一方面，当施加到工具的负载变得更小时，也可以将导通角设定为较大的值。
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公开(公告)号：US20140008092A1
公开(公告)日：2014-01-09
申请号：US14007049
申请日：2012-02-09
申请人： Kenya Yanagihara
发明人： Kenya Yanagihara
IPC分类号： B25F5/00
CPC分类号： B25F5/00 , H02K7/145 , H02K7/1807
摘要： A human-carried work machine is provided with an engine and an electric motor as a prime mover for driving a tool. The engine includes an output shaft that is connected to the tool, and the electric motor is configured to apply torque to the output shaft of the engine. The electric motor is an outer rotor-type brushless motor and includes a rotor that is fixed to the output shaft of the engine and a stator core that is fixed to a crankcase of the engine. The rotor includes a peripheral wall that surrounds the stator core and a magnet is disposed on an inner surface of the peripheral wall.
摘要翻译： 人造工作机器具有作为用于驱动工具的原动机的发动机和电动机。 发动机包括连接到工具的输出轴，并且电动机构造成向发动机的输出轴施加扭矩。 电动机是外转子型无刷电动机，其包括固定在发动机的输出轴上的转子和固定在发动机的曲轴箱上的定子铁芯。 转子包括围绕定子芯的周壁，并且磁体设置在周壁的内表面上。
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公开(公告)号：US20080246430A1
公开(公告)日：2008-10-09
申请号：US12080602
申请日：2008-04-04
申请人： Kenya Yanagihara
发明人： Kenya Yanagihara
IPC分类号： H02P27/08
CPC分类号： H02P25/28 , B60K7/0007 , B60K2007/0038 , B60K2007/0092 , B60L7/003 , B60L7/14 , B60L11/00 , B60L11/1803 , B60L15/007 , B60L15/2009 , B60L2220/16 , B60L2220/44 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/429 , H02K21/024 , H02P13/10 , H02P25/24 , Y02T10/641 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/72 , Y02T10/7275
摘要： In an electric vehicle drive apparatus having an electric motor and a motor drive device, the electric motor having a stator, a rotor and a moving mechanism capable of changing a relative distance between the stator and the rotor to vary an effective magnetic flux of the motor, the motor drive device compares a regenerative current with a target current during a regenerative control of the motor, and when it is found that the regenerative current is larger than the target current, the distance between the stator and the rotor is increased to reduce the effective magnetic flux.
摘要翻译： 在具有电动机和电动机驱动装置的电动车辆驱动装置中，电动机具有定子，转子和能够改变定子与转子之间的相对距离的移动机构，以改变电动机的有效磁通量 电机驱动装置在电动机的再生控制期间将再生电流与目标电流进行比较，并且当发现再生电流大于目标电流时，定子和转子之间的距离增加，以减少 有效磁通量。
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公开(公告)号：US07825623B2
公开(公告)日：2010-11-02
申请号：US12080602
申请日：2008-04-04
申请人： Kenya Yanagihara
发明人： Kenya Yanagihara
IPC分类号： H02P3/18
CPC分类号： H02P25/28 , B60K7/0007 , B60K2007/0038 , B60K2007/0092 , B60L7/003 , B60L7/14 , B60L11/00 , B60L11/1803 , B60L15/007 , B60L15/2009 , B60L2220/16 , B60L2220/44 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/429 , H02K21/024 , H02P13/10 , H02P25/24 , Y02T10/641 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/72 , Y02T10/7275
摘要： In an electric vehicle drive apparatus having an electric motor and a motor drive device, the electric motor having a stator, a rotor and a moving mechanism capable of changing a relative distance between the stator and the rotor to vary an effective magnetic flux of the motor, the motor drive device compares a regenerative current with a target current during a regenerative control of the motor, and when it is found that the regenerative current is larger than the target current, the distance between the stator and the rotor is increased to reduce the effective magnetic flux.
摘要翻译： 在具有电动机和电动机驱动装置的电动车辆驱动装置中，电动机具有定子，转子和能够改变定子与转子之间的相对距离的移动机构，以改变电动机的有效磁通量 电机驱动装置在电动机的再生控制期间将再生电流与目标电流进行比较，并且当发现再生电流大于目标电流时，定子和转子之间的距离增加，以减少 有效磁通量。
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