公开(公告)号：US20150204916A1

公开(公告)日：2015-07-23

申请号：US14600784

申请日：2015-01-20

Applicant: Hitachi Metals, Ltd.

Inventor： Katsuya AKIMOTO ,  Hisashi TATE ,  Naoki FUTAKUCHI ,  Naofumi CHIWATA ,  Ken OKUYAMA ,  Yukio IKEDA ,  Kazuhisa TAKAHASHI

IPC: G01R19/00 ,  G01R33/09 ,  G01R19/25

CPC classification number: G01R19/0092 ,  G01R15/205 ,  G01R15/207 ,  G01R19/25 ,  G01R33/093

Abstract: An electric current sensor includes a plurality of bus bars arranged in parallel, a plurality of magnetic detection elements that are adapted to detect a strength of a magnetic field generated by an electric current flowing through the bus bars and to output a voltage according to the strength of the magnetic field detected, and an arithmetic operation part to arithmetically operate an electric current flowing through the bus bars based on the voltage output from the plurality of magnetic detection elements. The arithmetic operation part includes a magnetic flux density arithmetic operation part to arithmetically operate a magnetic flux density based on the voltage, and an electric current arithmetic operation part to arithmetically operate an electric current I1 to Im flowing through each of the bus bars based on formula (1) below, ( B 1 = a 11 · I 1 + a 12 · I 2 + … + a 1   n · I n B 2 = a 21 · I 1 + a 22 · I 2 + … + a 2  n · I n B 3 = a 31 · I 1 + a 32 · I 2 + … + a 3  n · I n ⋮   ⋮ B m = a m   1 · I 1 + a m   2 · I 2 + … + a mn · I n   where   a 11   to   a mn   are   coefficients , ( 1 ) B1 to Bm are a magnetic flux density and I1 to Im are an electric current.

Abstract translation: 电流传感器包括并排布置的多个母线，多个磁检测元件，其适于检测由流过母线的电流产生的磁场的强度，并根据强度输出电压 以及算术运算部件，其基于从多个磁检测元件输出的电压算术运算流经母线的电流。 算术运算部包括基于电压算术运算磁通密度的磁通密度算术运算部，以及电流运算部，根据公式计算流过各母线的电流I1〜Im （1）（B 1 = a 11·I 1 + a 12·I 2 + ... + a 1）n·I n B 2 = a 21·I 1 + a 22·I 2 + ... + a 2 n n I n B 3 = a 31·I 1 + a 32·I 2 + ... + a 3 n n I n⋮⋮⋮⋮⋮⋮⋮⋮⋮⋮⋮1 1 1 1 1 1 1 1 I I I I I I （1）B1到Bm是磁通密度，I1到Im是电流。

公开(公告)号：US20180358712A1

公开(公告)日：2018-12-13

申请号：US15616513

申请日：2017-06-07

Applicant: Hitachi Metals, Ltd.

Inventor： Kazufumi SUENAGA ,  Setsuo ANDO ,  Hisashi TATE ,  Yuju ENDO

IPC: H01R4/18 ,  H01R4/58 ,  H01R4/20 ,  H01R9/03 ,  H01R43/05

CPC classification number: H01R4/18 ,  B82Y30/00 ,  H01R4/20 ,  H01R4/58 ,  H01R9/03 ,  H01R43/05

Abstract: A crimping terminal includes a crimping part that is compressed to a conductive part of an electric wire, and a buffer layer formed on a surface where the crimping part contacts the conductive part. The buffer layer includes a resin, a plating or a grease and a conductive microscopic particle that is mixed and dispersed therein. The microscopic particle includes a fractal structure including a fine protrusion on a surface of the microscopic particle.

公开(公告)号：US20150204919A1

公开(公告)日：2015-07-23

申请号：US14600814

申请日：2015-01-20

Applicant: Hitachi Metals, Ltd.

Inventor： Katsuya AKIMOTO ,  Hisashi TATE ,  Naofumi CHIWATA ,  Ken OKUYAMA ,  Naoki FUTAKUCHI ,  Yukio IKEDA ,  Kazuhisa TAKAHASHI ,  Shinya HAYASHI ,  Takahiro FUTATSUMORI

IPC: G01R19/15 ,  G01R33/02 ,  G01R33/00

CPC classification number: G01R19/15 ,  G01R15/207 ,  G01R33/0094 ,  G01R33/02

Abstract: 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.

Abstract translation: 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。