公开(公告)号：US20240248121A1

公开(公告)日：2024-07-25

申请号：US18535092

申请日：2023-12-11

Applicant: Alps Alpine Co., Ltd.

Inventor： Yuu KUMAGAI ,  Manabu TAMURA ,  Hideaki TAKANO

IPC: G01R15/20

CPC classification number: G01R15/207

Abstract: A current sensor has a bus bar through which a current under measurement flows, a magnetism sensing portion placed so as to face the bus bar in an X direction, and a chassis that incorporates the magnetism sensing portion and part of the bus bar. In a Y direction orthogonal to the X direction, the bus bar has a first connection end protruding from a Y1 side of the chassis and a second connection end protruding from a Y2 side of the chassis. The first connection end and second connection end are at different positions in the X direction when viewed from a Z direction orthogonal to the X direction and Y direction. An opposing portion, facing the magnetism sensing portion, of the bus bar crosses the Y direction when viewed from the Z direction.

公开(公告)号：US20250147075A1

公开(公告)日：2025-05-08

申请号：US19014378

申请日：2025-01-09

Applicant: Alps Alpine Co., Ltd.

Inventor： Manabu TAMURA ,  Keisuke NAKAYAMA ,  Hideaki TAKANO ,  Takashi KAWAHATA

IPC: G01R15/20 ,  G01R19/00

Abstract: A current sensor which suppresses deterioration of detection accuracy caused by high temperature of electronic components due to heat of a bus bar and is suitable for measurement of large current includes a bus bar through which a current to be measured flows, a magnetic detector detecting a magnetic field generated by the bus bar, and a case integrally formed with the bus bar and having a storage space storing the magnetic detector. The magnetic detector is spaced away from and faces the bus bar. The bus bar is on a first surface of the storage space defining the storage space and facing the magnetic detector. A low thermal conductivity material having a lower thermal conductivity than a resin-based material forming the case is provided between the bus bar and the magnetic detector to contact an opposing surface, on the bus bar, facing the magnetic detector.

公开(公告)号：US20250147076A1

公开(公告)日：2025-05-08

申请号：US19013020

申请日：2025-01-08

Applicant: Alps Alpine Co., Ltd.

Inventor： Keisuke NAKAYAMA ,  Hirofumi OKUMURA ,  Manabu TAMURA ,  Hideaki TAKANO

IPC: G01R15/20

Abstract: A current sensor includes busbars through which a current to be measured flows, magnetic detectors capable of detecting a magnetic field generated when the current to be measured flows through the busbars, a storage space storing the magnetic detectors, and a housing with which part of the busbars is integrated. Ends of the busbars are connected to an external first unit including a cooling device, and other ends of the busbars are connected to an external second unit whose temperature becomes higher than that of the first unit when the current to be measured flows. In the current sensor, which is capable of measuring a current value of the current to be measured from a result of the detection performed by the magnetic detectors, the housing has first vents penetrating from the inside of the storage space to the outside on a side facing the first unit.