公开(公告)号：US20220357368A1

公开(公告)日：2022-11-10

申请号：US17864778

申请日：2022-07-14

Applicant: DENSO CORPORATION

Inventor： Hiroaki MIWA ,  Akito SASAKI ,  Ryosuke SAKAI ,  Takuma ESAKA ,  Tatsuaki SUGITO

IPC: G01R15/20 ,  G01R19/00

Abstract: A current sensor includes a plurality of individual sensors and a wiring case. Each of the individual sensors includes an electrical-conduction member through which a measurement current to be measured flows, a magnetoelectric converter and an insulating sensor housing. The magnetoelectric converter converts a measurement magnetic field caused by a flow of the measurement current into an electric signal. The sensor housing accommodates the electrical-conduction member and the magnetoelectric converter therein. The wiring case is larger than the sensor housing. The wiring case includes an insulating integrated housing in which the plurality of individual sensors is fixed, and an input/output wiring disposed in the integrated housing and electrically connected to the megnetoelectric converter of each of the plurality of individual sensors.

公开(公告)号：US20210003617A1

公开(公告)日：2021-01-07

申请号：US17023508

申请日：2020-09-17

Applicant: DENSO CORPORATION

Inventor： Takuma ESAKA ,  Ryosuke SAKAI ,  Hiroaki MIWA

IPC: G01R15/20

Abstract: A current sensor includes an electrical-conduction member, a magnetoelectric converter and a shield. The shield includes a first shield and a second shield arranged such that surfaces are opposed to and spaced away from each other. A part of the electrical-conduction member and the magnetoelectric converter are located between the first shield and the second shield. The part of the electrical-conduction member located between the first and second shields extends in an extension direction that is along the surface of the first shield. In at least one of the first shield and the second shield, a center part has a length greater than lengths of opposite end parts in a lateral direction that is along the surface of the first shield and perpendicular to the extension direction. The magnetoelectric converter is located between the opposite end parts of the first and second shields in the extension direction.

公开(公告)号：US20190293733A1

公开(公告)日：2019-09-26

申请号：US16088470

申请日：2017-06-05

Applicant: DENSO CORPORATION

Inventor： Takuma ESAKA ,  Kohsuke NOMURA ,  Ryosuke SAKAI ,  Tatsuaki SUGITO

IPC: G01R33/09 ,  G01R19/25

Abstract: A current sensor includes a magnetic detection element that senses a magnetic flux generated from a current path to perform electromagnetic conversion, and at least two magnetic shields that are arranged around the magnetic detection element and shield an external magnetic flux affecting the magnetic detection element. The at least two magnetic shields include a first magnetic shield and a second magnetic shield facing each other across the magnetic detection element and the current path. At least one of the first magnetic shield and the second magnetic shield includes at least two base portions and a coupling portion coupling the at least two base portions. The at least one of the first magnetic shield and the second magnetic field has a recess recessed from a periphery in a surface facing the other of the first magnetic shield and the second magnetic shield.

公开(公告)号：US20190170795A1

公开(公告)日：2019-06-06

申请号：US16272196

申请日：2019-02-11

Applicant: DENSO CORPORATION

Inventor： Tatsuaki SUGITO ,  Kohsuke NOMURA ,  Ryosuke SAKAI ,  Takuma ESAKA

IPC: G01R15/20 ,  G01R33/00 ,  G01R33/09 ,  H02B1/20

Abstract: A current sensor device includes: at least one bus bar; at least one sensor package that includes a magneto-electric conversion element which detects a current flowing through the bus bar and an external connection terminal which is electrically connected to the magneto-electric conversion element; a printed circuit board that is disposed on the sensor package opposite to the bus bar, and electrically connected to the terminal; a magnetic shield body that shields the magneto-electric conversion element from an external magnetic field; and a resin element that integrally holds at least a part of the magnetic shield body and the bus bar fixed to the sensor package.