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公开(公告)号：US09557352B2
公开(公告)日：2017-01-31
申请号：US14600814
申请日：2015-01-20
申请人： Hitachi Metals, Ltd.
发明人： Katsuya Akimoto , Hisashi Tate , Naofumi Chiwata , Ken Okuyama , Naoki Futakuchi , Yukio Ikeda , Kazuhisa Takahashi , Shinya Hayashi , Takahiro Futatsumori
CPC分类号： G01R19/15 , G01R15/207 , G01R33/0094 , G01R33/02
摘要： A current detection structure includes a plurality of busbars arranged in parallel, and a plurality of magnetic detection elements each provided for corresponding one of the plurality of busbars so as to measure a strength of a magnetic field generated by a current flowing through the corresponding busbar. The plurality of magnetic detection elements are mounted on a single circuit board.
摘要翻译： 电流检测结构包括平行布置的多个母线，以及多个磁检测元件，每个磁检测元件分别设置用于多个母线中的相应一个母线，以便测量由流经相应母线的电流产生的磁场的强度。 多个磁检测元件安装在单个电路板上。
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公开(公告)号：US10712370B2
公开(公告)日：2020-07-14
申请号：US16210549
申请日：2018-12-05
申请人： Hitachi Metals, Ltd.
发明人： Naoki Futakuchi , Ken Okuyama , Katsuya Akimoto , Haruyasu Komano , Jun Umetsu , Yujiro Tomita
摘要： A current sensor includes plural bus bars which are each formed rectangular in a cross section, a pair of shield plates that include a magnetic material and are arranged so as to collectively sandwich the plural bus bars therebetween, and plural magnetic detection elements that are each arranged between the bus bars and one of the shield plates. A distance d between a detection position of a magnetic field intensity at an arbitrary one of the magnetic detection elements and a center position in the width direction between one of the bus bars corresponding to the arbitrary magnetic detection element and an other of the bus bars adjacent thereto in the width direction satisfies the following expression: d/w+0.023(w/h)≥0.36 where a width of the shield plates is w and an interval along a height direction of the shield plates is h.
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公开(公告)号：US10209277B2
公开(公告)日：2019-02-19
申请号：US15634394
申请日：2017-06-27
申请人： Hitachi Metals, Ltd.
发明人： Ken Okuyama , Katsuya Akimoto , Naoki Futakuchi , Jun Umetsu , Yujiro Tomita
摘要： A current sensor includes, a bus bar through which a current flows, a magnetic detection element detecting a magnetic field intensity generated by the current, first and second shielding plates arranged so as to sandwich the bus bar between the first and second shielding plates, a first conductive plate made of a conductive nonmagnetic material, arranged between the bus bar and the first shielding plate, and a second conductive plate made of the conductive nonmagnetic material, arranged between the bus bar and the second shielding plate, wherein the magnetic detection element is arranged at a first conductive plate-side. A distance between the first conductive plate and the bus bar is longer than a distance between the second conductive plate and the bus bar. The first conductive plate includes a slit formed in the first conductive plate at an overlapping position, and the slit pierces the first conductive plate.
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公开(公告)号：US09625496B2
公开(公告)日：2017-04-18
申请号：US14682635
申请日：2015-04-09
申请人： Hitachi Metals, Ltd.
发明人： Naoki Futakuchi , Yukio Ikeda , Kazuhisa Takahashi
CPC分类号： G01R15/205 , G01R33/0029 , G01R33/093 , G01R33/096 , G01R35/00
摘要： A magnetic sensor includes a magnetic detection element, and a correcting section to correct an output voltage of the magnetic detection element and output the corrected output voltage. The correcting section is configured to compute a magnetic flux density from the output voltage of the magnetic detection element, compute and output the corrected output voltage having a linear relationship to the computed magnetic flux density.
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公开(公告)号：US09513317B2
公开(公告)日：2016-12-06
申请号：US14600716
申请日：2015-01-20
申请人： Hitachi Metals, Ltd.
发明人： Ken Okuyama , Naofumi Chiwata , Katsuya Akimoto , Naoki Futakuchi , Yukio Ikeda , Kazuhisa Takahashi
CPC分类号： G01R19/0092 , G01R15/205 , G01R15/207 , G01R33/093
摘要： A current detection structure includes a busbar to flow a current therethrough, a magnetic detection element to detect a strength of a magnetic field generated by the current flowing through the busbar, and a current detecting portion to determine the current flowing through the busbar based on the magnetic field detected by the magnetic detection element. A through-hole is formed penetrating the busbar such that a current path is formed on both sides of the through-hole. The magnetic detection element is disposed in the through-hole. The current detecting portion determines the current flowing through the busbar based on a strength of a synthetic magnetic field detected by the magnetic detection element. The synthetic magnetic field is produced by combining a magnetic field that is generated by a current flowing through the current path on the both sides of the through-hole.
摘要翻译： 电流检测结构包括用于流过电流的母线，用于检测由流过母线的电流产生的磁场的强度的磁检测元件，以及电流检测部分，用于基于电流检测部分确定流过母线的电流 由磁检测元件检测的磁场。 穿过母线的通孔形成在通孔的两侧形成电流通路。 磁检测元件设置在通孔中。 电流检测部基于由磁检测元件检测出的合成磁场的强度来确定流经母线的电流。 合成磁场通过将通过流过通孔的电流的电流产生的磁场组合在通孔的两侧而产生。
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公开(公告)号：US10794935B2
公开(公告)日：2020-10-06
申请号：US15912138
申请日：2018-03-05
申请人： Hitachi Metals, Ltd.
发明人： Ken Okuyama , Katsuya Akimoto , Naoki Futakuchi , Haruyasu Komano , Jun Umetsu , Yujiro Tomita
摘要： A current sensor includes a bus bar through which a measured current is carried, a pair of shielding plates that include a magnetic material, and are arranged to sandwich the bus bar in a thickness direction of the bus bar, and a magnetic detection element that is arranged between the bus bar and one of the shielding plates, and detects an intensity of magnetic field caused by the current carried through the bus bar. The shielding plate has a length of not less than 20 mm in a length direction of the bus bar, and a width of not less than 24 mm and not more than 38 mm in a width direction orthogonal to the length direction.
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公开(公告)号：US20200256895A1
公开(公告)日：2020-08-13
申请号：US16783887
申请日：2020-02-06
申请人： Hitachi Metals, Ltd.
发明人： Ken OKUYAMA , Akitoshi Fujimori , Naoki Futakuchi , Yujiro Tomita , Jun Umetsu
摘要： An electric current sensor includes bus bars each having a plate shape through which an electric current to be detected flows in a length direction, a housing including a bus bar-holding portion for holding the bus bars with being aligned in a width direction perpendicular to the length direction and a thickness direction of the bus bars, magnetic detection elements, each of which detects a strength of magnetic field generated by the electric current flowing through a corresponding bus bar, and a first shield plate and a second shield plate arranged to sandwich the respective bus bars and the magnetic detection elements in the thickness direction. Each of the first shield plate and the second shield plate is made of a magnetic material. Both the first shield plate and the second shield plate are held directly and commonly by the housing.
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公开(公告)号：US10677819B2
公开(公告)日：2020-06-09
申请号：US16156033
申请日：2018-10-10
申请人： Hitachi Metals, Ltd.
发明人： Ken Okuyama , Naoki Futakuchi , Haruyasu Komano , Jun Umetsu , Yujiro Tomita
IPC分类号： G01R15/20
摘要： A current sensor includes two bus bars, each of which is formed in a plate shape, the two bus bars being aligned and arranged so as to be spaced apart from each other in a plate width direction thereof, and magnetic detection element arranged opposite the two bus bars, respectively, in a plate thickness direction of the bus bars to detect a magnetic field strength generated by a current flowing through the corresponding bus bars. The magnetic detection element are gradient detection type magnetic detection elements that output a difference between magnetic field strengths detected at two magnetic sensing positions, respectively, and are arranged in such a manner that a detection axis direction thereof is perpendicular to a length direction of the bus bars and is tilted with respect to the plate thickness direction.
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公开(公告)号：US09431776B2
公开(公告)日：2016-08-30
申请号：US14681453
申请日：2015-04-08
申请人： Hitachi Metals, Ltd.
发明人： Naoki Futakuchi , Katsuya Akimoto , Sachio Suzuki , Jun Umetsu , Shinya Hayashi , Takahiro Futatsumori
CPC分类号： H01R13/6683 , G06F1/16 , H01R13/6658 , H01R13/70 , H02M7/003
摘要： A connector for being attached to a power-supply unit including a switching element includes a connecting terminal including an end portion connected to an output terminal in a casing of the power-supply unit, a housing fixed to the casing and enclosing at least a portion of the connecting terminal, a current sensor to detect a magnetic field generated by an electric current flowing through the connecting terminal, and a signal line for transmitting an output signal of the current sensor. The signal line includes an extension region with a predetermined length from one end on a side of the current sensor. The extension region extends in a direction orthogonal to a direction of electric current flowing through the connecting terminal.
摘要翻译： 用于连接到包括开关元件的电源单元的连接器包括：连接端子，包括连接到电源单元的壳体中的输出端子的端部，固定到壳体并且包围至少一部分的壳体 连接端子的电流传感器，用于检测由流过连接端子的电流产生的磁场的电流传感器，以及用于传输电流传感器的输出信号的信号线。 信号线包括从电流传感器一侧的一端具有预定长度的延伸区域。 延伸区域在与流过连接端子的电流方向正交的方向上延伸。
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公开(公告)号：US11035888B2
公开(公告)日：2021-06-15
申请号：US16208890
申请日：2018-12-04
申请人： Hitachi Metals, Ltd.
发明人： Jun Umetsu , Naoki Futakuchi , Haruyasu Komano , Ken Okuyama , Yujiro Tomita
IPC分类号： G01R33/00 , G01R19/00 , H01R25/16 , G01R15/20 , G01R1/04 , G01R15/14 , G01R33/02 , G01R31/315 , G01N27/83 , G01N27/82 , G01N27/90 , G01N17/02
摘要： A current sensor includes a bus bar in which a current to be detected flows, a circuit board mounted with a magnetic detection element thereon to detect a strength of a magnetic field generated by a current flowing in the bus bar, and a housing including first and second housings provided in such a manner as to sandwich the bus bar and the circuit board therebetween in a plate thickness direction of the bus bar. The first and second housings include slide guide portions respectively which are relatively slidable in a sloping direction with respect to the plate thickness direction of the bus bar while abutting each other in the plate thickness direction of the bus bar.
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